diff options
| -rw-r--r-- | Documentation/scsi/00-INDEX | 2 | ||||
| -rw-r--r-- | Documentation/scsi/ibmmca.txt | 1402 | ||||
| -rw-r--r-- | Documentation/scsi/scsi-parameters.txt | 6 | ||||
| -rw-r--r-- | Documentation/scsi/scsi_mid_low_api.txt | 2 | ||||
| -rw-r--r-- | drivers/scsi/Kconfig | 83 | ||||
| -rw-r--r-- | drivers/scsi/Makefile | 2 | ||||
| -rw-r--r-- | drivers/scsi/aha1542.c | 66 | ||||
| -rw-r--r-- | drivers/scsi/fd_mcs.c | 1354 | ||||
| -rw-r--r-- | drivers/scsi/ibmmca.c | 2379 | ||||
| -rw-r--r-- | drivers/scsi/sim710.c | 124 |
10 files changed, 6 insertions, 5414 deletions
diff --git a/Documentation/scsi/00-INDEX b/Documentation/scsi/00-INDEX index b7dd6502bec5..9b0787f965e9 100644 --- a/Documentation/scsi/00-INDEX +++ b/Documentation/scsi/00-INDEX | |||
| @@ -56,8 +56,6 @@ g_NCR5380.txt | |||
| 56 | - info on driver for NCR5380 and NCR53c400 based adapters | 56 | - info on driver for NCR5380 and NCR53c400 based adapters |
| 57 | hptiop.txt | 57 | hptiop.txt |
| 58 | - HIGHPOINT ROCKETRAID 3xxx RAID DRIVER | 58 | - HIGHPOINT ROCKETRAID 3xxx RAID DRIVER |
| 59 | ibmmca.txt | ||
| 60 | - info on driver for IBM adapters with MCA bus | ||
| 61 | in2000.txt | 59 | in2000.txt |
| 62 | - info on in2000 driver | 60 | - info on in2000 driver |
| 63 | libsas.txt | 61 | libsas.txt |
diff --git a/Documentation/scsi/ibmmca.txt b/Documentation/scsi/ibmmca.txt deleted file mode 100644 index ac41a9fcac77..000000000000 --- a/Documentation/scsi/ibmmca.txt +++ /dev/null | |||
| @@ -1,1402 +0,0 @@ | |||
| 1 | |||
| 2 | -=< The IBM Microchannel SCSI-Subsystem >=- | ||
| 3 | |||
| 4 | for the IBM PS/2 series | ||
| 5 | |||
| 6 | Low Level Software-Driver for Linux | ||
| 7 | |||
| 8 | Copyright (c) 1995 Strom Systems, Inc. under the terms of the GNU | ||
| 9 | General Public License. Originally written by Martin Kolinek, December 1995. | ||
| 10 | Officially modified and maintained by Michael Lang since January 1999. | ||
| 11 | |||
| 12 | Version 4.0a | ||
| 13 | |||
| 14 | Last update: January 3, 2001 | ||
| 15 | |||
| 16 | Before you Start | ||
| 17 | ---------------- | ||
| 18 | This is the common README.ibmmca file for all driver releases of the | ||
| 19 | IBM MCA SCSI driver for Linux. Please note, that driver releases 4.0 | ||
| 20 | or newer do not work with kernel versions older than 2.4.0, while driver | ||
| 21 | versions older than 4.0 do not work with kernels 2.4.0 or later! If you | ||
| 22 | try to compile your kernel with the wrong driver source, the | ||
| 23 | compilation is aborted and you get a corresponding error message. This is | ||
| 24 | no bug in the driver; it prevents you from using the wrong source code | ||
| 25 | with the wrong kernel version. | ||
| 26 | |||
| 27 | Authors of this Driver | ||
| 28 | ---------------------- | ||
| 29 | - Chris Beauregard (improvement of the SCSI-device mapping by the driver) | ||
| 30 | - Martin Kolinek (origin, first release of this driver) | ||
| 31 | - Klaus Kudielka (multiple SCSI-host management/detection, adaption to | ||
| 32 | Linux Kernel 2.1.x, module support) | ||
| 33 | - Michael Lang (assigning original pun/lun mapping, dynamical ldn | ||
| 34 | assignment, rewritten adapter detection, this file, | ||
| 35 | patches, official driver maintenance and subsequent | ||
| 36 | debugging, related with the driver) | ||
| 37 | |||
| 38 | Table of Contents | ||
| 39 | ----------------- | ||
| 40 | 1 Abstract | ||
| 41 | 2 Driver Description | ||
| 42 | 2.1 IBM SCSI-Subsystem Detection | ||
| 43 | 2.2 Physical Units, Logical Units, and Logical Devices | ||
| 44 | 2.3 SCSI-Device Recognition and dynamical ldn Assignment | ||
| 45 | 2.4 SCSI-Device Order | ||
| 46 | 2.5 Regular SCSI-Command-Processing | ||
| 47 | 2.6 Abort & Reset Commands | ||
| 48 | 2.7 Disk Geometry | ||
| 49 | 2.8 Kernel Boot Option | ||
| 50 | 2.9 Driver Module Support | ||
| 51 | 2.10 Multiple Hostadapter Support | ||
| 52 | 2.11 /proc/scsi-Filesystem Information | ||
| 53 | 2.12 /proc/mca-Filesystem Information | ||
| 54 | 2.13 Supported IBM SCSI-Subsystems | ||
| 55 | 2.14 Linux Kernel Versions | ||
| 56 | 3 Code History | ||
| 57 | 4 To do | ||
| 58 | 5 Users' Manual | ||
| 59 | 5.1 Commandline Parameters | ||
| 60 | 5.2 Troubleshooting | ||
| 61 | 5.3 Bug reports | ||
| 62 | 5.4 Support WWW-page | ||
| 63 | 6 References | ||
| 64 | 7 Credits to | ||
| 65 | 7.1 People | ||
| 66 | 7.2 Sponsors & Supporters | ||
| 67 | 8 Trademarks | ||
| 68 | 9 Disclaimer | ||
| 69 | |||
| 70 | * * * | ||
| 71 | |||
| 72 | 1 Abstract | ||
| 73 | ---------- | ||
| 74 | This README-file describes the IBM SCSI-subsystem low level driver for | ||
| 75 | Linux. The descriptions which were formerly kept in the source code have | ||
| 76 | been taken out of this file to simplify the codes readability. The driver | ||
| 77 | description has been updated, as most of the former description was already | ||
| 78 | quite outdated. The history of the driver development is also kept inside | ||
| 79 | here. Multiple historical developments have been summarized to shorten the | ||
| 80 | text size a bit. At the end of this file you can find a small manual for | ||
| 81 | this driver and hints to get it running on your machine. | ||
| 82 | |||
| 83 | 2 Driver Description | ||
| 84 | -------------------- | ||
| 85 | 2.1 IBM SCSI-Subsystem Detection | ||
| 86 | -------------------------------- | ||
| 87 | This is done in the ibmmca_detect() function. It first checks, if the | ||
| 88 | Microchannel-bus support is enabled, as the IBM SCSI-subsystem needs the | ||
| 89 | Microchannel. In a next step, a free interrupt is chosen and the main | ||
| 90 | interrupt handler is connected to it to handle answers of the SCSI- | ||
| 91 | subsystem(s). If the F/W SCSI-adapter is forced by the BIOS to use IRQ11 | ||
| 92 | instead of IRQ14, IRQ11 is used for the IBM SCSI-2 F/W adapter. In a | ||
| 93 | further step it is checked, if the adapter gets detected by force from | ||
| 94 | the kernel commandline, where the I/O port and the SCSI-subsystem id can | ||
| 95 | be specified. The next step checks if there is an integrated SCSI-subsystem | ||
| 96 | installed. This register area is fixed through all IBM PS/2 MCA-machines | ||
| 97 | and appears as something like a virtual slot 10 of the MCA-bus. On most | ||
| 98 | PS/2 machines, the POS registers of slot 10 are set to 0xff or 0x00 if not | ||
| 99 | integrated SCSI-controller is available. But on certain PS/2s, like model | ||
| 100 | 9595, this slot 10 is used to store other information which at earlier | ||
| 101 | stage confused the driver and resulted in the detection of some ghost-SCSI. | ||
| 102 | If POS-register 2 and 3 are not 0x00 and not 0xff, but all other POS | ||
| 103 | registers are either 0xff or 0x00, there must be an integrated SCSI- | ||
| 104 | subsystem present and it will be registered as IBM Integrated SCSI- | ||
| 105 | Subsystem. The next step checks, if there is a slot-adapter installed on | ||
| 106 | the MCA-bus. To get this, the first two POS-registers, that represent the | ||
| 107 | adapter ID are checked. If they fit to one of the ids, stored in the | ||
| 108 | adapter list, a SCSI-subsystem is assumed to be found in a slot and will be | ||
| 109 | registered. This check is done through all possible MCA-bus slots to allow | ||
| 110 | more than one SCSI-adapter to be present in the PS/2-system and this is | ||
| 111 | already the first point of problems. Looking into the technical reference | ||
| 112 | manual for the IBM PS/2 common interfaces, the POS2 register must have | ||
| 113 | different interpretation of its single bits to avoid overlapping I/O | ||
| 114 | regions. While one can assume, that the integrated subsystem has a fix | ||
| 115 | I/O-address at 0x3540 - 0x3547, further installed IBM SCSI-adapters must | ||
| 116 | use a different I/O-address. This is expressed by bit 1 to 3 of POS2 | ||
| 117 | (multiplied by 8 + 0x3540). Bits 2 and 3 are reserved for the integrated | ||
| 118 | subsystem, but not for the adapters! The following list shows, how the | ||
| 119 | bits of POS2 and POS3 should be interpreted. | ||
| 120 | |||
| 121 | The POS2-register of all PS/2 models' integrated SCSI-subsystems has the | ||
| 122 | following interpretation of bits: | ||
| 123 | Bit 7 - 4 : Chip Revision ID (Release) | ||
| 124 | Bit 3 - 2 : Reserved | ||
| 125 | Bit 1 : 8k NVRAM Disabled | ||
| 126 | Bit 0 : Chip Enable (EN-Signal) | ||
| 127 | The POS3-register is interpreted as follows (for most IBM SCSI-subsys.): | ||
| 128 | Bit 7 - 5 : SCSI ID | ||
| 129 | Bit 4 - 0 : Reserved = 0 | ||
| 130 | The slot-adapters have different interpretation of these bits. The IBM SCSI | ||
| 131 | adapter (w/Cache) and the IBM SCSI-2 F/W adapter use the following | ||
| 132 | interpretation of the POS2 register: | ||
| 133 | Bit 7 - 4 : ROM Segment Address Select | ||
| 134 | Bit 3 - 1 : Adapter I/O Address Select (*8+0x3540) | ||
| 135 | Bit 0 : Adapter Enable (EN-Signal) | ||
| 136 | and for the POS3 register: | ||
| 137 | Bit 7 - 5 : SCSI ID | ||
| 138 | Bit 4 : Fairness Enable (SCSI ID3 f. F/W) | ||
| 139 | Bit 3 - 0 : Arbitration Level | ||
| 140 | The most modern product of the series is the IBM SCSI-2 F/W adapter, it | ||
| 141 | allows dual-bus SCSI and SCSI-wide addressing, which means, PUNs may be | ||
| 142 | between 0 and 15. Here, Bit 4 is the high-order bit of the 4-bit wide | ||
| 143 | adapter PUN expression. In short words, this means, that IBM PS/2 machines | ||
| 144 | can only support 1 single integrated subsystem by default. Additional | ||
| 145 | slot-adapters get ports assigned by the automatic configuration tool. | ||
| 146 | |||
| 147 | One day I found a patch in ibmmca_detect(), forcing the I/O-address to be | ||
| 148 | 0x3540 for integrated SCSI-subsystems, there was a remark placed, that on | ||
| 149 | integrated IBM SCSI-subsystems of model 56, the POS2 register was showing 5. | ||
| 150 | This means, that really for these models, POS2 has to be interpreted | ||
| 151 | sticking to the technical reference guide. In this case, the bit 2 (4) is | ||
| 152 | a reserved bit and may not be interpreted. These differences between the | ||
| 153 | adapters and the integrated controllers are taken into account by the | ||
| 154 | detection routine of the driver on from version >3.0g. | ||
| 155 | |||
| 156 | Every time, a SCSI-subsystem is discovered, the ibmmca_register() function | ||
| 157 | is called. This function checks first, if the requested area for the I/O- | ||
| 158 | address of this SCSI-subsystem is still available and assigns this I/O- | ||
| 159 | area to the SCSI-subsystem. There are always 8 sequential I/O-addresses | ||
| 160 | taken for each individual SCSI-subsystem found, which are: | ||
| 161 | |||
| 162 | Offset Type Permissions | ||
| 163 | 0 Command Interface Register 1 Read/Write | ||
| 164 | 1 Command Interface Register 2 Read/Write | ||
| 165 | 2 Command Interface Register 3 Read/Write | ||
| 166 | 3 Command Interface Register 4 Read/Write | ||
| 167 | 4 Attention Register Read/Write | ||
| 168 | 5 Basic Control Register Read/Write | ||
| 169 | 6 Interrupt Status Register Read | ||
| 170 | 7 Basic Status Register Read | ||
| 171 | |||
| 172 | After the I/O-address range is assigned, the host-adapter is assigned | ||
| 173 | to a local structure which keeps all adapter information needed for the | ||
| 174 | driver itself and the mid- and higher-level SCSI-drivers. The SCSI pun/lun | ||
| 175 | and the adapters' ldn tables are initialized and get probed afterwards by | ||
| 176 | the check_devices() function. If no further adapters are found, | ||
| 177 | ibmmca_detect() quits. | ||
| 178 | |||
| 179 | 2.2 Physical Units, Logical Units, and Logical Devices | ||
| 180 | ------------------------------------------------------ | ||
| 181 | There can be up to 56 devices on the SCSI bus (besides the adapter): | ||
| 182 | there are up to 7 "physical units" (each identified by physical unit | ||
| 183 | number or pun, also called the scsi id, this is the number you select | ||
| 184 | with hardware jumpers), and each physical unit can have up to 8 | ||
| 185 | "logical units" (each identified by logical unit number, or lun, | ||
| 186 | between 0 and 7). The IBM SCSI-2 F/W adapter offers this on up to two | ||
| 187 | busses and provides support for 30 logical devices at the same time, where | ||
| 188 | in wide-addressing mode you can have 16 puns with 32 luns on each device. | ||
| 189 | This section describes the handling of devices on non-F/W adapters. | ||
| 190 | Just imagine, that you can have 16 * 32 = 512 devices on a F/W adapter | ||
| 191 | which means a lot of possible devices for such a small machine. | ||
| 192 | |||
| 193 | Typically the adapter has pun=7, so puns of other physical units | ||
| 194 | are between 0 and 6(15). On a wide-adapter a pun higher than 7 is | ||
| 195 | possible, but is normally not used. Almost all physical units have only | ||
| 196 | one logical unit, with lun=0. A CD-ROM jukebox would be an example of a | ||
| 197 | physical unit with more than one logical unit. | ||
| 198 | |||
| 199 | The embedded microprocessor of the IBM SCSI-subsystem hides the complex | ||
| 200 | two-dimensional (pun,lun) organization from the operating system. | ||
| 201 | When the machine is powered-up (or rebooted), the embedded microprocessor | ||
| 202 | checks, on its own, all 56 possible (pun,lun) combinations, and the first | ||
| 203 | 15 devices found are assigned into a one-dimensional array of so-called | ||
| 204 | "logical devices", identified by "logical device numbers" or ldn. The last | ||
| 205 | ldn=15 is reserved for the subsystem itself. Wide adapters may have | ||
| 206 | to check up to 15 * 8 = 120 pun/lun combinations. | ||
| 207 | |||
| 208 | 2.3 SCSI-Device Recognition and Dynamical ldn Assignment | ||
| 209 | -------------------------------------------------------- | ||
| 210 | One consequence of information hiding is that the real (pun,lun) | ||
| 211 | numbers are also hidden. The two possibilities to get around this problem | ||
| 212 | are to offer fake pun/lun combinations to the operating system or to | ||
| 213 | delete the whole mapping of the adapter and to reassign the ldns, using | ||
| 214 | the immediate assign command of the SCSI-subsystem for probing through | ||
| 215 | all possible pun/lun combinations. An ldn is a "logical device number" | ||
| 216 | which is used by IBM SCSI-subsystems to access some valid SCSI-device. | ||
| 217 | At the beginning of the development of this driver, the following approach | ||
| 218 | was used: | ||
| 219 | |||
| 220 | First, the driver checked the ldn's (0 to 6) to find out which ldn's | ||
| 221 | have devices assigned. This was done by the functions check_devices() and | ||
| 222 | device_exists(). The interrupt handler has a special paragraph of code | ||
| 223 | (see local_checking_phase_flag) to assist in the checking. Assume, for | ||
| 224 | example, that three logical devices were found assigned at ldn 0, 1, 2. | ||
| 225 | These are presented to the upper layer of Linux SCSI driver | ||
| 226 | as devices with bogus (pun, lun) equal to (0,0), (1,0), (2,0). | ||
| 227 | On the other hand, if the upper layer issues a command to device | ||
| 228 | say (4,0), this driver returns DID_NO_CONNECT error. | ||
| 229 | |||
| 230 | In a second step of the driver development, the following improvement has | ||
| 231 | been applied: The first approach limited the number of devices to 7, far | ||
| 232 | fewer than the 15 that it could use, then it just mapped ldn -> | ||
| 233 | (ldn/8,ldn%8) for pun,lun. We ended up with a real mishmash of puns | ||
| 234 | and luns, but it all seemed to work. | ||
| 235 | |||
| 236 | The latest development, which is implemented from the driver version 3.0 | ||
| 237 | and later, realizes the device recognition in the following way: | ||
| 238 | The physical SCSI-devices on the SCSI-bus are probed via immediate_assign- | ||
| 239 | and device_inquiry-commands, that is all implemented in a completely new | ||
| 240 | made check_devices() subroutine. This delivers an exact map of the physical | ||
| 241 | SCSI-world that is now stored in the get_scsi[][]-array. This means, | ||
| 242 | that the once hidden pun,lun assignment is now known to this driver. | ||
| 243 | It no longer believes in default-settings of the subsystem and maps all | ||
| 244 | ldns to existing pun,lun "by foot". This assures full control of the ldn | ||
| 245 | mapping and allows dynamical remapping of ldns to different pun,lun, if | ||
| 246 | there are more SCSI-devices installed than ldns available (n>15). The | ||
| 247 | ldns from 0 to 6 get 'hardwired' by this driver to puns 0 to 7 at lun=0, | ||
| 248 | excluding the pun of the subsystem. This assures, that at least simple | ||
| 249 | SCSI-installations have optimum access-speed and are not touched by | ||
| 250 | dynamical remapping. The ldns 7 to 14 are put to existing devices with | ||
| 251 | lun>0 or to non-existing devices, in order to satisfy the subsystem, if | ||
| 252 | there are less than 15 SCSI-devices connected. In the case of more than 15 | ||
| 253 | devices, the dynamical mapping goes active. If the get_scsi[][] reports a | ||
| 254 | device to be existent, but it has no ldn assigned, it gets an ldn out of 7 | ||
| 255 | to 14. The numbers are assigned in cyclic order, therefore it takes 8 | ||
| 256 | dynamical reassignments on the SCSI-devices until a certain device | ||
| 257 | loses its ldn again. This assures that dynamical remapping is avoided | ||
| 258 | during intense I/O between up to 15 SCSI-devices (means pun,lun | ||
| 259 | combinations). A further advantage of this method is that people who | ||
| 260 | build their kernel without probing on all luns will get what they expect, | ||
| 261 | because the driver just won't assign everything with lun>0 when | ||
| 262 | multiple lun probing is inactive. | ||
| 263 | |||
| 264 | 2.4 SCSI-Device Order | ||
| 265 | --------------------- | ||
| 266 | Because of the now correct recognition of physical pun,lun, and | ||
| 267 | their report to mid-level- and higher-level-drivers, the new reported puns | ||
| 268 | can be different from the old, faked puns. Therefore, Linux will eventually | ||
| 269 | change /dev/sdXXX assignments and prompt you for corrupted superblock | ||
| 270 | repair on boottime. In this case DO NOT PANIC, YOUR DISKS ARE STILL OK!!! | ||
| 271 | You have to reboot (CTRL-D) with an old kernel and set the /etc/fstab-file | ||
| 272 | entries right. After that, the system should come up as errorfree as before. | ||
| 273 | If your boot-partition is not coming up, also edit the /etc/lilo.conf-file | ||
| 274 | in a Linux session booted on old kernel and run lilo before reboot. Check | ||
| 275 | lilo.conf anyway to get boot on other partitions with foreign OSes right | ||
| 276 | again. But there exists a feature of this driver that allows you to change | ||
| 277 | the assignment order of the SCSI-devices by flipping the PUN-assignment. | ||
| 278 | See the next paragraph for a description. | ||
| 279 | |||
| 280 | The problem for this is, that Linux does not assign the SCSI-devices in the | ||
| 281 | way as described in the ANSI-SCSI-standard. Linux assigns /dev/sda to | ||
| 282 | the device with at minimum id 0. But the first drive should be at id 6, | ||
| 283 | because for historical reasons, drive at id 6 has, by hardware, the highest | ||
| 284 | priority and a drive at id 0 the lowest. IBM was one of the rare producers, | ||
| 285 | where the BIOS assigns drives belonging to the ANSI-SCSI-standard. Most | ||
| 286 | other producers' BIOS does not (I think even Adaptec-BIOS). The | ||
| 287 | IBMMCA_SCSI_ORDER_STANDARD flag, which you set while configuring the | ||
| 288 | kernel enables to choose the preferred way of SCSI-device-assignment. | ||
| 289 | Defining this flag would result in Linux determining the devices in the | ||
| 290 | same order as DOS and OS/2 does on your MCA-machine. This is also standard | ||
| 291 | on most industrial computers and OSes, like e.g. OS-9. Leaving this flag | ||
| 292 | undefined will get your devices ordered in the default way of Linux. See | ||
| 293 | also the remarks of Chris Beauregard from Dec 15, 1997 and the followups | ||
| 294 | in section 3. | ||
| 295 | |||
| 296 | 2.5 Regular SCSI-Command-Processing | ||
| 297 | ----------------------------------- | ||
| 298 | Only three functions get involved: ibmmca_queuecommand(), issue_cmd(), | ||
| 299 | and interrupt_handler(). | ||
| 300 | |||
| 301 | The upper layer issues a scsi command by calling function | ||
| 302 | ibmmca_queuecommand(). This function fills a "subsystem control block" | ||
| 303 | (scb) and calls a local function issue_cmd(), which writes a scb | ||
| 304 | command into subsystem I/O ports. Once the scb command is carried out, | ||
| 305 | the interrupt_handler() is invoked. If a device is determined to be | ||
| 306 | existent and it has not assigned any ldn, it gets one dynamically. | ||
| 307 | For this, the whole stuff is done in ibmmca_queuecommand(). | ||
| 308 | |||
| 309 | 2.6 Abort & Reset Commands | ||
| 310 | -------------------------- | ||
| 311 | These are implemented with busy waiting for interrupt to arrive. | ||
| 312 | ibmmca_reset() and ibmmca_abort() do not work sufficiently well | ||
| 313 | up to now and need still a lot of development work. This seems | ||
| 314 | to be a problem with other low-level SCSI drivers too, however | ||
| 315 | this should be no excuse. | ||
| 316 | |||
| 317 | 2.7 Disk Geometry | ||
| 318 | ----------------- | ||
| 319 | The ibmmca_biosparams() function should return the same disk geometry | ||
| 320 | as the bios. This is needed for fdisk, etc. The returned geometry is | ||
| 321 | certainly correct for disks smaller than 1 gigabyte. In the meantime, | ||
| 322 | it has been proved, that this works fine even with disks larger than | ||
| 323 | 1 gigabyte. | ||
| 324 | |||
| 325 | 2.8 Kernel Boot Option | ||
| 326 | ---------------------- | ||
| 327 | The function ibmmca_scsi_setup() is called if option ibmmcascsi=n | ||
| 328 | is passed to the kernel. See file linux/init/main.c for details. | ||
| 329 | |||
| 330 | 2.9 Driver Module Support | ||
| 331 | ------------------------- | ||
| 332 | Is implemented and tested by K. Kudielka. This could probably not work | ||
| 333 | on kernels <2.1.0. | ||
| 334 | |||
| 335 | 2.10 Multiple Hostadapter Support | ||
| 336 | --------------------------------- | ||
| 337 | This driver supports up to eight interfaces of type IBM-SCSI-Subsystem. | ||
| 338 | Integrated-, and MCA-adapters are automatically recognized. Unrecognizable | ||
| 339 | IBM-SCSI-Subsystem interfaces can be specified as kernel-parameters. | ||
| 340 | |||
| 341 | 2.11 /proc/scsi-Filesystem Information | ||
| 342 | -------------------------------------- | ||
| 343 | Information about the driver condition is given in | ||
| 344 | /proc/scsi/ibmmca/<host_no>. ibmmca_proc_info() provides this information. | ||
| 345 | |||
| 346 | This table is quite informative for interested users. It shows the load | ||
| 347 | of commands on the subsystem and whether you are running the bypassed | ||
| 348 | (software) or integrated (hardware) SCSI-command set (see below). The | ||
| 349 | amount of accesses is shown. Read, write, modeselect is shown separately | ||
| 350 | in order to help debugging problems with CD-ROMs or tapedrives. | ||
| 351 | |||
| 352 | The following table shows the list of 15 logical device numbers, that are | ||
| 353 | used by the SCSI-subsystem. The load on each ldn is shown in the table, | ||
| 354 | again, read and write commands are split. The last column shows the amount | ||
| 355 | of reassignments, that have been applied to the ldns, if you have more than | ||
| 356 | 15 pun/lun combinations available on the SCSI-bus. | ||
| 357 | |||
| 358 | The last two tables show the pun/lun map and the positions of the ldns | ||
| 359 | on this pun/lun map. This may change during operation, when a ldn is | ||
| 360 | reassigned to another pun/lun combination. If the necessity for dynamical | ||
| 361 | assignments is set to 'no', the ldn structure keeps static. | ||
| 362 | |||
| 363 | 2.12 /proc/mca-Filesystem Information | ||
| 364 | ------------------------------------- | ||
| 365 | The slot-file contains all default entries and in addition chip and I/O- | ||
| 366 | address information of the SCSI-subsystem. This information is provided | ||
| 367 | by ibmmca_getinfo(). | ||
| 368 | |||
| 369 | 2.13 Supported IBM SCSI-Subsystems | ||
| 370 | ---------------------------------- | ||
| 371 | The following IBM SCSI-subsystems are supported by this driver: | ||
| 372 | |||
| 373 | - IBM Fast/Wide SCSI-2 Adapter | ||
| 374 | - IBM 7568 Industrial Computer SCSI Adapter w/Cache | ||
| 375 | - IBM Expansion Unit SCSI Controller | ||
| 376 | - IBM SCSI Adapter w/Cache | ||
| 377 | - IBM SCSI Adapter | ||
| 378 | - IBM Integrated SCSI Controller | ||
| 379 | - All clones, 100% compatible with the chipset and subsystem command | ||
| 380 | system of IBM SCSI-adapters (forced detection) | ||
| 381 | |||
| 382 | 2.14 Linux Kernel Versions | ||
| 383 | -------------------------- | ||
| 384 | The IBM SCSI-subsystem low level driver is prepared to be used with | ||
| 385 | all versions of Linux between 2.0.x and 2.4.x. The compatibility checks | ||
| 386 | are fully implemented up from version 3.1e of the driver. This means, that | ||
| 387 | you just need the latest ibmmca.h and ibmmca.c file and copy it in the | ||
| 388 | linux/drivers/scsi directory. The code is automatically adapted during | ||
| 389 | kernel compilation. This is different from kernel 2.4.0! Here version | ||
| 390 | 4.0 or later of the driver must be used for kernel 2.4.0 or later. Version | ||
| 391 | 4.0 or later does not work together with older kernels! Driver versions | ||
| 392 | older than 4.0 do not work together with kernel 2.4.0 or later. They work | ||
| 393 | on all older kernels. | ||
| 394 | |||
| 395 | 3 Code History | ||
| 396 | -------------- | ||
| 397 | Jan 15 1996: First public release. | ||
| 398 | - Martin Kolinek | ||
| 399 | |||
| 400 | Jan 23 1996: Scrapped code which reassigned scsi devices to logical | ||
| 401 | device numbers. Instead, the existing assignment (created | ||
| 402 | when the machine is powered-up or rebooted) is used. | ||
| 403 | A side effect is that the upper layer of Linux SCSI | ||
| 404 | device driver gets bogus scsi ids (this is benign), | ||
| 405 | and also the hard disks are ordered under Linux the | ||
| 406 | same way as they are under dos (i.e., C: disk is sda, | ||
| 407 | D: disk is sdb, etc.). | ||
| 408 | - Martin Kolinek | ||
| 409 | |||
| 410 | I think that the CD-ROM is now detected only if a CD is | ||
| 411 | inside CD_ROM while Linux boots. This can be fixed later, | ||
| 412 | once the driver works on all types of PS/2's. | ||
| 413 | - Martin Kolinek | ||
| 414 | |||
| 415 | Feb 7 1996: Modified biosparam function. Fixed the CD-ROM detection. | ||
| 416 | For now, devices other than harddisk and CD_ROM are | ||
| 417 | ignored. Temporarily modified abort() function | ||
| 418 | to behave like reset(). | ||
| 419 | - Martin Kolinek | ||
| 420 | |||
| 421 | Mar 31 1996: The integrated scsi subsystem is correctly found | ||
| 422 | in PS/2 models 56,57, but not in model 76. Therefore | ||
| 423 | the ibmmca_scsi_setup() function has been added today. | ||
| 424 | This function allows the user to force detection of | ||
| 425 | scsi subsystem. The kernel option has format | ||
| 426 | ibmmcascsi=n | ||
| 427 | where n is the scsi_id (pun) of the subsystem. Most likely, n is 7. | ||
| 428 | - Martin Kolinek | ||
| 429 | |||
| 430 | Aug 21 1996: Modified the code which maps ldns to (pun,0). It was | ||
| 431 | insufficient for those of us with CD-ROM changers. | ||
| 432 | - Chris Beauregard | ||
| 433 | |||
| 434 | Dec 14 1996: More improvements to the ldn mapping. See check_devices | ||
| 435 | for details. Did more fiddling with the integrated SCSI detection, | ||
| 436 | but I think it's ultimately hopeless without actually testing the | ||
| 437 | model of the machine. The 56, 57, 76 and 95 (ultimedia) all have | ||
| 438 | different integrated SCSI register configurations. However, the 56 | ||
| 439 | and 57 are the only ones that have problems with forced detection. | ||
| 440 | - Chris Beauregard | ||
| 441 | |||
| 442 | Mar 8-16 1997: Modified driver to run as a module and to support | ||
| 443 | multiple adapters. A structure, called ibmmca_hostdata, is now | ||
| 444 | present, containing all the variables, that were once only | ||
| 445 | available for one single adapter. The find_subsystem-routine has vanished. | ||
| 446 | The hardware recognition is now done in ibmmca_detect directly. | ||
| 447 | This routine checks for presence of MCA-bus, checks the interrupt | ||
| 448 | level and continues with checking the installed hardware. | ||
| 449 | Certain PS/2-models do not recognize a SCSI-subsystem automatically. | ||
| 450 | Hence, the setup defined by command-line-parameters is checked first. | ||
| 451 | Thereafter, the routine probes for an integrated SCSI-subsystem. | ||
| 452 | Finally, adapters are checked. This method has the advantage to cover all | ||
| 453 | possible combinations of multiple SCSI-subsystems on one MCA-board. Up to | ||
| 454 | eight SCSI-subsystems can be recognized and announced to the upper-level | ||
| 455 | drivers with this improvement. A set of defines made changes to other | ||
| 456 | routines as small as possible. | ||
| 457 | - Klaus Kudielka | ||
| 458 | |||
| 459 | May 30 1997: (v1.5b) | ||
| 460 | 1) SCSI-command capability enlarged by the recognition of MODE_SELECT. | ||
| 461 | This needs the RD-Bit to be disabled on IM_OTHER_SCSI_CMD_CMD which | ||
| 462 | allows data to be written from the system to the device. It is a | ||
| 463 | necessary step to be allowed to set blocksize of SCSI-tape-drives and | ||
| 464 | the tape-speed, without confusing the SCSI-Subsystem. | ||
| 465 | 2) The recognition of a tape is included in the check_devices routine. | ||
| 466 | This is done by checking for TYPE_TAPE, that is already defined in | ||
| 467 | the kernel-scsi-environment. The markup of a tape is done in the | ||
| 468 | global ldn_is_tape[] array. If the entry on index ldn | ||
| 469 | is 1, there is a tapedrive connected. | ||
| 470 | 3) The ldn_is_tape[] array is necessary to distinguish between tape- and | ||
| 471 | other devices. Fixed blocklength devices should not cause a problem | ||
| 472 | with the SCB-command for read and write in the ibmmca_queuecommand | ||
| 473 | subroutine. Therefore, I only derivate the READ_XX, WRITE_XX for | ||
| 474 | the tape-devices, as recommended by IBM in this Technical Reference, | ||
| 475 | mentioned below. (IBM recommends to avoid using the read/write of the | ||
| 476 | subsystem, but the fact was, that read/write causes a command error from | ||
| 477 | the subsystem and this causes kernel-panic.) | ||
| 478 | 4) In addition, I propose to use the ldn instead of a fix char for the | ||
| 479 | display of PS2_DISK_LED_ON(). On 95, one can distinguish between the | ||
| 480 | devices that are accessed. It shows activity and easyfies debugging. | ||
| 481 | The tape-support has been tested with a SONY SDT-5200 and a HP DDS-2 | ||
| 482 | (I do not know yet the type). Optimization and CD-ROM audio-support, | ||
| 483 | I am working on ... | ||
| 484 | - Michael Lang | ||
| 485 | |||
| 486 | June 19 1997: (v1.6b) | ||
| 487 | 1) Submitting the extra-array ldn_is_tape[] -> to the local ld[] | ||
| 488 | device-array. | ||
| 489 | 2) CD-ROM Audio-Play seems to work now. | ||
| 490 | 3) When using DDS-2 (120M) DAT-Tapes, mtst shows still density-code | ||
| 491 | 0x13 for ordinary DDS (61000 BPM) instead 0x24 for DDS-2. This appears | ||
| 492 | also on Adaptec 2940 adaptor in a PCI-System. Therefore, I assume that | ||
| 493 | the problem is independent of the low-level-driver/bus-architecture. | ||
| 494 | 4) Hexadecimal ldn on PS/2-95 LED-display. | ||
| 495 | 5) Fixing of the PS/2-LED on/off that it works right with tapedrives and | ||
| 496 | does not confuse the disk_rw_in_progress counter. | ||
| 497 | - Michael Lang | ||
| 498 | |||
| 499 | June 21 1997: (v1.7b) | ||
| 500 | 1) Adding of a proc_info routine to inform in /proc/scsi/ibmmca/<host> the | ||
| 501 | outer-world about operational load statistics on the different ldns, | ||
| 502 | seen by the driver. Everybody that has more than one IBM-SCSI should | ||
| 503 | test this, because I only have one and cannot see what happens with more | ||
| 504 | than one IBM-SCSI hosts. | ||
| 505 | 2) Definition of a driver version-number to have a better recognition of | ||
| 506 | the source when there are existing too much releases that may confuse | ||
| 507 | the user, when reading about release-specific problems. Up to know, | ||
| 508 | I calculated the version-number to be 1.7. Because we are in BETA-test | ||
| 509 | yet, it is today 1.7b. | ||
| 510 | 3) Sorry for the heavy bug I programmed on June 19 1997! After that, the | ||
| 511 | CD-ROM did not work any more! The C7-command was a fake impression | ||
| 512 | I got while programming. Now, the READ and WRITE commands for CD-ROM are | ||
| 513 | no longer running over the subsystem, but just over | ||
| 514 | IM_OTHER_SCSI_CMD_CMD. On my observations (PS/2-95), now CD-ROM mounts | ||
| 515 | much faster(!) and hopefully all fancy multimedia-functions, like direct | ||
| 516 | digital recording from audio-CDs also work. (I tried it with cdda2wav | ||
| 517 | from the cdwtools-package and it filled up the harddisk immediately :-).) | ||
| 518 | To easify boolean logics, a further local device-type in ld[], called | ||
| 519 | is_cdrom has been included. | ||
| 520 | 4) If one uses a SCSI-device of unsupported type/commands, one | ||
| 521 | immediately runs into a kernel-panic caused by Command Error. To better | ||
| 522 | understand which SCSI-command caused the problem, I extended this | ||
| 523 | specific panic-message slightly. | ||
| 524 | - Michael Lang | ||
| 525 | |||
| 526 | June 25 1997: (v1.8b) | ||
| 527 | 1) Some cosmetic changes for the handling of SCSI-device-types. | ||
| 528 | Now, also CD-Burners / WORMs and SCSI-scanners should work. For | ||
| 529 | MO-drives I have no experience, therefore not yet supported. | ||
| 530 | In logical_devices I changed from different type-variables to one | ||
| 531 | called 'device_type' where the values, corresponding to scsi.h, | ||
| 532 | of a SCSI-device are stored. | ||
| 533 | 2) There existed a small bug, that maps a device, coming after a SCSI-tape | ||
| 534 | wrong. Therefore, e.g. a CD-ROM changer would have been mapped wrong | ||
| 535 | -> problem removed. | ||
| 536 | 3) Extension of the logical_device structure. Now it contains also device, | ||
| 537 | vendor and revision-level of a SCSI-device for internal usage. | ||
| 538 | - Michael Lang | ||
| 539 | |||
| 540 | June 26-29 1997: (v2.0b) | ||
| 541 | 1) The release number 2.0b is necessary because of the completely new done | ||
| 542 | recognition and handling of SCSI-devices with the adapter. As I got | ||
| 543 | from Chris the hint, that the subsystem can reassign ldns dynamically, | ||
| 544 | I remembered this immediate_assign-command, I found once in the handbook. | ||
| 545 | Now, the driver first kills all ldn assignments that are set by default | ||
| 546 | on the SCSI-subsystem. After that, it probes on all puns and luns for | ||
| 547 | devices by going through all combinations with immediate_assign and | ||
| 548 | probing for devices, using device_inquiry. The found physical(!) pun,lun | ||
| 549 | structure is stored in get_scsi[][] as device types. This is followed | ||
| 550 | by the assignment of all ldns to existing SCSI-devices. If more ldns | ||
| 551 | than devices are available, they are assigned to non existing pun,lun | ||
| 552 | combinations to satisfy the adapter. With this, the dynamical mapping | ||
| 553 | was possible to implement. (For further info see the text in the | ||
| 554 | source code and in the description below. Read the description | ||
| 555 | below BEFORE installing this driver on your system!) | ||
| 556 | 2) Changed the name IBMMCA_DRIVER_VERSION to IBMMCA_SCSI_DRIVER_VERSION. | ||
| 557 | 3) The LED-display shows on PS/2-95 no longer the ldn, but the SCSI-ID | ||
| 558 | (pun) of the accessed SCSI-device. This is now senseful, because the | ||
| 559 | pun known within the driver is exactly the pun of the physical device | ||
| 560 | and no longer a fake one. | ||
| 561 | 4) The /proc/scsi/ibmmca/<host_no> consists now of the first part, where | ||
| 562 | hit-statistics of ldns is shown and a second part, where the maps of | ||
| 563 | physical and logical SCSI-devices are displayed. This could be very | ||
| 564 | interesting, when one is using more than 15 SCSI-devices in order to | ||
| 565 | follow the dynamical remapping of ldns. | ||
| 566 | - Michael Lang | ||
| 567 | |||
| 568 | June 26-29 1997: (v2.0b-1) | ||
| 569 | 1) I forgot to switch the local_checking_phase_flag to 1 and back to 0 | ||
| 570 | in the dynamical remapping part in ibmmca_queuecommand for the | ||
| 571 | device_exist routine. Sorry. | ||
| 572 | - Michael Lang | ||
| 573 | |||
| 574 | July 1-13 1997: (v3.0b,c) | ||
| 575 | 1) Merging of the driver-developments of Klaus Kudielka and Michael Lang | ||
| 576 | in order to get a optimum and unified driver-release for the | ||
| 577 | IBM-SCSI-Subsystem-Adapter(s). | ||
| 578 | For people, using the Kernel-release >=2.1.0, module-support should | ||
| 579 | be no problem. For users, running under <2.1.0, module-support may not | ||
| 580 | work, because the methods have changed between 2.0.x and 2.1.x. | ||
| 581 | 2) Added some more effective statistics for /proc-output. | ||
| 582 | 3) Change typecasting at necessary points from (unsigned long) to | ||
| 583 | virt_to_bus(). | ||
| 584 | 4) Included #if... at special points to have specific adaption of the | ||
| 585 | driver to kernel 2.0.x and 2.1.x. It should therefore also run with | ||
| 586 | later releases. | ||
| 587 | 5) Magneto-Optical drives and medium-changers are also recognized, now. | ||
| 588 | Therefore, we have a completely gapfree recognition of all SCSI- | ||
| 589 | device-types, that are known by Linux up to kernel 2.1.31. | ||
| 590 | 6) The flag SCSI_IBMMCA_DEV_RESET has been inserted. If it is set within | ||
| 591 | the configuration, each connected SCSI-device will get a reset command | ||
| 592 | during boottime. This can be necessary for some special SCSI-devices. | ||
| 593 | This flag should be included in Config.in. | ||
| 594 | (See also the new Config.in file.) | ||
| 595 | Probable next improvement: bad disk handler. | ||
| 596 | - Michael Lang | ||
| 597 | |||
| 598 | Sept 14 1997: (v3.0c) | ||
| 599 | 1) Some debugging and speed optimization applied. | ||
| 600 | - Michael Lang | ||
| 601 | |||
| 602 | Dec 15, 1997 | ||
| 603 | - chrisb@truespectra.com | ||
| 604 | - made the front panel display thingy optional, specified from the | ||
| 605 | command-line via ibmmcascsi=display. Along the lines of the /LED | ||
| 606 | option for the OS/2 driver. | ||
| 607 | - fixed small bug in the LED display that would hang some machines. | ||
| 608 | - reversed ordering of the drives (using the | ||
| 609 | IBMMCA_SCSI_ORDER_STANDARD define). This is necessary for two main | ||
| 610 | reasons: | ||
| 611 | - users who've already installed Linux won't be screwed. Keep | ||
| 612 | in mind that not everyone is a kernel hacker. | ||
| 613 | - be consistent with the BIOS ordering of the drives. In the | ||
| 614 | BIOS, id 6 is C:, id 0 might be D:. With this scheme, they'd be | ||
| 615 | backwards. This confuses the crap out of those heathens who've | ||
| 616 | got a impure Linux installation (which, <wince>, I'm one of). | ||
| 617 | This whole problem arises because IBM is actually non-standard with | ||
| 618 | the id to BIOS mappings. You'll find, in fdomain.c, a similar | ||
| 619 | comment about a few FD BIOS revisions. The Linux (and apparently | ||
| 620 | industry) standard is that C: maps to scsi id (0,0). Let's stick | ||
| 621 | with that standard. | ||
| 622 | - Since this is technically a branch of my own, I changed the | ||
| 623 | version number to 3.0e-cpb. | ||
| 624 | |||
| 625 | Jan 17, 1998: (v3.0f) | ||
| 626 | 1) Addition of some statistical info for /proc in proc_info. | ||
| 627 | 2) Taking care of the SCSI-assignment problem, dealed by Chris at Dec 15 | ||
| 628 | 1997. In fact, IBM is right, concerning the assignment of SCSI-devices | ||
| 629 | to driveletters. It is conform to the ANSI-definition of the SCSI- | ||
| 630 | standard to assign drive C: to SCSI-id 6, because it is the highest | ||
| 631 | hardware priority after the hostadapter (that has still today by | ||
| 632 | default everywhere id 7). Also realtime-operating systems that I use, | ||
| 633 | like LynxOS and OS9, which are quite industrial systems use top-down | ||
| 634 | numbering of the harddisks, that is also starting at id 6. Now, one | ||
| 635 | sits a bit between two chairs. On one hand side, using the define | ||
| 636 | IBMMCA_SCSI_ORDER_STANDARD makes Linux assigning disks conform to | ||
| 637 | the IBM- and ANSI-SCSI-standard and keeps this driver downward | ||
| 638 | compatible to older releases, on the other hand side, people is quite | ||
| 639 | habituated in believing that C: is assigned to (0,0) and much other | ||
| 640 | SCSI-BIOS do so. Therefore, I moved the IBMMCA_SCSI_ORDER_STANDARD | ||
| 641 | define out of the driver and put it into Config.in as subitem of | ||
| 642 | 'IBM SCSI support'. A help, added to Documentation/Configure.help | ||
| 643 | explains the differences between saying 'y' or 'n' to the user, when | ||
| 644 | IBMMCA_SCSI_ORDER_STANDARD prompts, so the ordinary user is enabled to | ||
| 645 | choose the way of assignment, depending on his own situation and gusto. | ||
| 646 | 3) Adapted SCSI_IBMMCA_DEV_RESET to the local naming convention, so it is | ||
| 647 | now called IBMMCA_SCSI_DEV_RESET. | ||
| 648 | 4) Optimization of proc_info and its subroutines. | ||
| 649 | 5) Added more in-source-comments and extended the driver description by | ||
| 650 | some explanation about the SCSI-device-assignment problem. | ||
| 651 | - Michael Lang | ||
| 652 | |||
| 653 | Jan 18, 1998: (v3.0g) | ||
| 654 | 1) Correcting names to be absolutely conform to the later 2.1.x releases. | ||
| 655 | This is necessary for | ||
| 656 | IBMMCA_SCSI_DEV_RESET -> CONFIG_IBMMCA_SCSI_DEV_RESET | ||
| 657 | IBMMCA_SCSI_ORDER_STANDARD -> CONFIG_IBMMCA_SCSI_ORDER_STANDARD | ||
| 658 | - Michael Lang | ||
| 659 | |||
| 660 | Jan 18, 1999: (v3.1 MCA-team internal) | ||
| 661 | 1) The multiple hosts structure is accessed from every subroutine, so there | ||
| 662 | is no longer the address of the device structure passed from function | ||
| 663 | to function, but only the hostindex. A call by value, nothing more. This | ||
| 664 | should really be understood by the compiler and the subsystem should get | ||
| 665 | the right values and addresses. | ||
| 666 | 2) The SCSI-subsystem detection was not complete and quite hugely buggy up | ||
| 667 | to now, compared to the technical manual. The interpretation of the pos2 | ||
| 668 | register is not as assumed by people before, therefore, I dropped a note | ||
| 669 | in the ibmmca_detect function to show the registers' interpretation. | ||
| 670 | The pos-registers of integrated SCSI-subsystems do not contain any | ||
| 671 | information concerning the IO-port offset, really. Instead, they contain | ||
| 672 | some info about the adapter, the chip, the NVRAM .... The I/O-port is | ||
| 673 | fixed to 0x3540 - 0x3547. There can be more than one adapters in the | ||
| 674 | slots and they get an offset for the I/O area in order to get their own | ||
| 675 | I/O-address area. See chapter 2 for detailed description. At least, the | ||
| 676 | detection should now work right, even on models other than 95. The 95ers | ||
| 677 | came happily around the bug, as their pos2 register contains always 0 | ||
| 678 | in the critical area. Reserved bits are not allowed to be interpreted, | ||
| 679 | therefore, IBM is allowed to set those bits as they like and they may | ||
| 680 | really vary between different PS/2 models. So, now, no interpretation | ||
| 681 | of reserved bits - hopefully no trouble here anymore. | ||
| 682 | 3) The command error, which you may get on models 55, 56, 57, 70, 77 and | ||
| 683 | P70 may have been caused by the fact, that adapters of older design do | ||
| 684 | not like sending commands to non-existing SCSI-devices and will react | ||
| 685 | with a command error as a sign of protest. While this error is not | ||
| 686 | present on IBM SCSI Adapter w/cache, it appears on IBM Integrated SCSI | ||
| 687 | Adapters. Therefore, I implemented a workaround to forgive those | ||
| 688 | adapters their protests, but it is marked up in the statistics, so | ||
| 689 | after a successful boot, you can see in /proc/scsi/ibmmca/<host_number> | ||
| 690 | how often the command errors have been forgiven to the SCSI-subsystem. | ||
| 691 | If the number is bigger than 0, you have a SCSI subsystem of older | ||
| 692 | design, what should no longer matter. | ||
| 693 | 4) ibmmca_getinfo() has been adapted very carefully, so it shows in the | ||
| 694 | slotn file really, what is senseful to be presented. | ||
| 695 | 5) ibmmca_register() has been extended in its parameter list in order to | ||
| 696 | pass the right name of the SCSI-adapter to Linux. | ||
| 697 | - Michael Lang | ||
| 698 | |||
| 699 | Feb 6, 1999: (v3.1) | ||
| 700 | 1) Finally, after some 3.1Beta-releases, the 3.1 release. Sorry, for | ||
| 701 | the delayed release, but it was not finished with the release of | ||
| 702 | Kernel 2.2.0. | ||
| 703 | - Michael Lang | ||
| 704 | |||
| 705 | Feb 10, 1999 (v3.1) | ||
| 706 | 1) Added a new commandline parameter called 'bypass' in order to bypass | ||
| 707 | every integrated subsystem SCSI-command consequently in case of | ||
| 708 | troubles. | ||
| 709 | 2) Concatenated read_capacity requests to the harddisks. It gave a lot | ||
| 710 | of troubles with some controllers and after I wanted to apply some | ||
| 711 | extensions, it jumped out in the same situation, on my w/cache, as like | ||
| 712 | on D. Weinehalls' Model 56, having integrated SCSI. This gave me the | ||
| 713 | decisive hint to move the code-part out and declare it global. Now | ||
| 714 | it seems to work far better and more stable. Let us see what | ||
| 715 | the world thinks of it... | ||
| 716 | 3) By the way, only Sony DAT-drives seem to show density code 0x13. A | ||
| 717 | test with a HP drive gave right results, so the problem is vendor- | ||
| 718 | specific and not a problem of the OS or the driver. | ||
| 719 | - Michael Lang | ||
| 720 | |||
| 721 | Feb 18, 1999 (v3.1d) | ||
| 722 | 1) The abort command and the reset function have been checked for | ||
| 723 | inconsistencies. From the logical point of thinking, they work | ||
| 724 | at their optimum, now, but as the subsystem does not answer with an | ||
| 725 | interrupt, abort never finishes, sigh... | ||
| 726 | 2) Everything, that is accessed by a busmaster request from the adapter | ||
| 727 | is now declared as global variable, even the return-buffer in the | ||
| 728 | local checking phase. This assures, that no accesses to undefined memory | ||
| 729 | areas are performed. | ||
| 730 | 3) In ibmmca.h, the line unchecked_isa_dma is added with 1 in order to | ||
| 731 | avoid memory-pointers for the areas higher than 16MByte in order to | ||
| 732 | be sure, it also works on 16-Bit Microchannel bus systems. | ||
| 733 | 4) A lot of small things have been found, but nothing that endangered the | ||
| 734 | driver operations. Just it should be more stable, now. | ||
| 735 | - Michael Lang | ||
| 736 | |||
| 737 | Feb 20, 1999 (v3.1e) | ||
| 738 | 1) I took the warning from the Linux Kernel Hackers Guide serious and | ||
| 739 | checked the cmd->result return value to the done-function very carefully. | ||
| 740 | It is obvious, that the IBM SCSI only delivers the tsb.dev_status, if | ||
| 741 | some error appeared, else it is undefined. Now, this is fixed. Before | ||
| 742 | any SCB command gets queued, the tsb.dev_status is set to 0, so the | ||
| 743 | cmd->result won't screw up Linux higher level drivers. | ||
| 744 | 2) The reset-function has slightly improved. This is still planned for | ||
| 745 | abort. During the abort and the reset function, no interrupts are | ||
| 746 | allowed. This is however quite hard to cope with, so the INT-status | ||
| 747 | register is read. When the interrupt gets queued, one can find its | ||
| 748 | status immediately on that register and is enabled to continue in the | ||
| 749 | reset function. I had no chance to test this really, only in a bogus | ||
| 750 | situation, I got this function running, but the situation was too much | ||
| 751 | worse for Linux :-(, so tests will continue. | ||
| 752 | 3) Buffers got now consistent. No open address mapping, as before and | ||
| 753 | therefore no further troubles with the unassigned memory segmentation | ||
| 754 | faults that scrambled probes on 95XX series and even on 85XX series, | ||
| 755 | when the kernel is done in a not so perfectly fitting way. | ||
| 756 | 4) Spontaneous interrupts from the subsystem, appearing without any | ||
| 757 | command previously queued are answered with a DID_BAD_INTR result. | ||
| 758 | 5) Taken into account ZP Gus' proposals to reverse the SCSI-device | ||
| 759 | scan order. As it does not work on Kernel 2.1.x or 2.2.x, as proposed | ||
| 760 | by him, I implemented it in a slightly derived way, which offers in | ||
| 761 | addition more flexibility. | ||
| 762 | - Michael Lang | ||
| 763 | |||
| 764 | Apr 23, 2000 (v3.2pre1) | ||
| 765 | 1) During a very long time, I collected a huge amount of bug reports from | ||
| 766 | various people, trying really quite different things on their SCSI- | ||
| 767 | PS/2s. Today, all these bug reports are taken into account and should be | ||
| 768 | mostly solved. The major topics were: | ||
| 769 | - Driver crashes during boottime by no obvious reason. | ||
| 770 | - Driver panics while the midlevel-SCSI-driver is trying to inquire | ||
| 771 | the SCSI-device properties, even though hardware is in perfect state. | ||
| 772 | - Displayed info for the various slot-cards is interpreted wrong. | ||
| 773 | The main reasons for the crashes were two: | ||
| 774 | 1) The commands to check for device information like INQUIRY, | ||
| 775 | TEST_UNIT_READY, REQUEST_SENSE and MODE_SENSE cause the devices | ||
| 776 | to deliver information of up to 255 bytes. Midlevel drivers offer | ||
| 777 | 1024 bytes of space for the answer, but the IBM-SCSI-adapters do | ||
| 778 | not accept this, as they stick quite near to ANSI-SCSI and report | ||
| 779 | a COMMAND_ERROR message which causes the driver to panic. The main | ||
| 780 | problem was located around the INQUIRY command. Now, for all the | ||
| 781 | mentioned commands, the buffersize sent to the adapter is at | ||
| 782 | maximum 255 which seems to be a quite reasonable solution. | ||
| 783 | TEST_UNIT_READY gets a buffersize of 0 to make sure that no | ||
| 784 | data is transferred in order to avoid any possible command failure. | ||
| 785 | 2) On unsuccessful TEST_UNIT_READY, the mid-level driver has to send | ||
| 786 | a REQUEST_SENSE in order to see where the problem is located. This | ||
| 787 | REQUEST_SENSE may have various length in its answer-buffer. IBM | ||
| 788 | SCSI-subsystems report a command failure if the returned buffersize | ||
| 789 | is different from the sent buffersize, but this can be suppressed by | ||
| 790 | a special bit, which is now done and problems seem to be solved. | ||
| 791 | 2) Code adaption to all kernel-releases. Now, the 3.2 code compiles on | ||
| 792 | 2.0.x, 2.1.x, 2.2.x and 2.3.x kernel releases without any code-changes. | ||
| 793 | 3) Commandline-parameters are recognized again, even under Kernel 2.3.x or | ||
| 794 | higher. | ||
| 795 | - Michael Lang | ||
| 796 | |||
| 797 | April 27, 2000 (v3.2pre2) | ||
| 798 | 1) Bypassed commands get read by the adapter by one cycle instead of two. | ||
| 799 | This increases SCSI-performance. | ||
| 800 | 2) Synchronous datatransfer is provided for sure to be 5 MHz on older | ||
| 801 | SCSI and 10 MHz on internal F/W SCSI-adapter. | ||
| 802 | 3) New commandline parameters allow to force the adapter to slow down while | ||
| 803 | in synchronous transfer. Could be helpful for very old devices. | ||
| 804 | - Michael Lang | ||
| 805 | |||
| 806 | June 2, 2000 (v3.2pre5) | ||
| 807 | 1) Added Jim Shorney's contribution to make the activity indicator | ||
| 808 | flashing in addition to the LED-alphanumeric display-panel on | ||
| 809 | models 95A. To be enabled to choose this feature freely, a new | ||
| 810 | commandline parameter is added, called 'activity'. | ||
| 811 | 2) Added the READ_CONTROL bit for test_unit_ready SCSI-command. | ||
| 812 | 3) Added some suppress_exception bits to read_device_capacity and | ||
| 813 | all device_inquiry occurrences in the driver code. | ||
| 814 | 4) Complaints about the various KERNEL_VERSION implementations are | ||
| 815 | taken into account. Every local_LinuxKernelVersion occurrence is | ||
| 816 | now replaced by KERNEL_VERSION, defined in linux/version.h. | ||
| 817 | Corresponding changes were applied to ibmmca.h, too. This was a | ||
| 818 | contribution to all kernel-parts by Philipp Hahn. | ||
| 819 | - Michael Lang | ||
| 820 | |||
| 821 | July 17, 2000 (v3.2pre8) | ||
| 822 | A long period of collecting bug reports from all corners of the world | ||
| 823 | now lead to the following corrections to the code: | ||
| 824 | 1) SCSI-2 F/W support crashed with a COMMAND ERROR. The reason for this | ||
| 825 | was that it is possible to disable Fast-SCSI for the external bus. | ||
| 826 | The feature-control command, where this crash appeared regularly, tried | ||
| 827 | to set the maximum speed of 10MHz synchronous transfer speed and that | ||
| 828 | reports a COMMAND ERROR if external bus Fast-SCSI is disabled. Now, | ||
| 829 | the feature-command probes down from maximum speed until the adapter | ||
| 830 | stops to complain, which is at the same time the maximum possible | ||
| 831 | speed selected in the reference program. So, F/W external can run at | ||
| 832 | 5 MHz (slow-) or 10 MHz (fast-SCSI). During feature probing, the | ||
| 833 | COMMAND ERROR message is used to detect if the adapter does not complain. | ||
| 834 | 2) Up to now, only combined busmode is supported, if you use external | ||
| 835 | SCSI-devices, attached to the F/W-controller. If dual bus is selected, | ||
| 836 | only the internal SCSI-devices get accessed by Linux. For most | ||
| 837 | applications, this should do fine. | ||
| 838 | 3) Wide-SCSI-addressing (16-Bit) is now possible for the internal F/W | ||
| 839 | bus on the F/W adapter. If F/W adapter is detected, the driver | ||
| 840 | automatically uses the extended PUN/LUN <-> LDN mapping tables, which | ||
| 841 | are now new from 3.2pre8. This allows PUNs between 0 and 15 and should | ||
| 842 | provide more fun with the F/W adapter. | ||
| 843 | 4) Several machines use the SCSI: POS registers for internal/undocumented | ||
| 844 | storage of system relevant info. This confused the driver, mainly on | ||
| 845 | models 9595, as it expected no onboard SCSI only, if all POS in | ||
| 846 | the integrated SCSI-area are set to 0x00 or 0xff. Now, the mechanism | ||
| 847 | to check for integrated SCSI is much more restrictive and these problems | ||
| 848 | should be history. | ||
| 849 | - Michael Lang | ||
| 850 | |||
| 851 | July 18, 2000 (v3.2pre9) | ||
| 852 | This develop rather quickly at the moment. Two major things were still | ||
| 853 | missing in 3.2pre8: | ||
| 854 | 1) The adapter PUN for F/W adapters has 4-bits, while all other adapters | ||
| 855 | have 3-bits. This is now taken into account for F/W. | ||
| 856 | 2) When you select CONFIG_IBMMCA_SCSI_ORDER_STANDARD, you should | ||
| 857 | normally get the inverse probing order of your devices on the SCSI-bus. | ||
| 858 | The ANSI device order gets scrambled in version 3.2pre8!! Now, a new | ||
| 859 | and tested algorithm inverts the device-order on the SCSI-bus and | ||
| 860 | automatically avoids accidental access to whatever SCSI PUN the adapter | ||
| 861 | is set and works with SCSI- and Wide-SCSI-addressing. | ||
| 862 | - Michael Lang | ||
| 863 | |||
| 864 | July 23, 2000 (v3.2pre10 unpublished) | ||
| 865 | 1) LED panel display supports wide-addressing in ibmmca=display mode. | ||
| 866 | 2) Adapter-information and autoadaption to address-space is done. | ||
| 867 | 3) Auto-probing for maximum synchronous SCSI transfer rate is working. | ||
| 868 | 4) Optimization to some embedded function calls is applied. | ||
| 869 | 5) Added some comment for the user to wait for SCSI-devices being probed. | ||
| 870 | 6) Finished version 3.2 for Kernel 2.4.0. It least, I thought it is but... | ||
| 871 | - Michael Lang | ||
| 872 | |||
| 873 | July 26, 2000 (v3.2pre11) | ||
| 874 | 1) I passed a horrible weekend getting mad with NMIs on kernel 2.2.14 and | ||
| 875 | a model 9595. Asking around in the community, nobody except of me has | ||
| 876 | seen such errors. Weird, but I am trying to recompile everything on | ||
| 877 | the model 9595. Maybe, as I use a specially modified gcc, that could | ||
| 878 | cause problems. But, it was not the reason. The true background was, | ||
| 879 | that the kernel was compiled for i386 and the 9595 has a 486DX-2. | ||
| 880 | Normally, no troubles should appear, but for this special machine, | ||
| 881 | only the right processor support is working fine! | ||
| 882 | 2) Previous problems with synchronous speed, slowing down from one adapter | ||
| 883 | to the next during probing are corrected. Now, local variables store | ||
| 884 | the synchronous bitmask for every single adapter found on the MCA bus. | ||
| 885 | 3) LED alphanumeric panel support for XX95 systems is now showing some | ||
| 886 | alive rotator during boottime. This makes sense, when no monitor is | ||
| 887 | connected to the system. You can get rid of all display activity, if | ||
| 888 | you do not use any parameter or just ibmmcascsi=activity, for the | ||
| 889 | harddrive activity LED, existent on all PS/2, except models 8595-XXX. | ||
| 890 | If no monitor is available, please use ibmmcascsi=display, which works | ||
| 891 | fine together with the linuxinfo utility for the LED-panel. | ||
| 892 | - Michael Lang | ||
| 893 | |||
| 894 | July 29, 2000 (v3.2) | ||
| 895 | 1) Submission of this driver for kernel 2.4test-XX and 2.2.17. | ||
| 896 | - Michael Lang | ||
| 897 | |||
| 898 | December 28, 2000 (v3.2d / v4.0) | ||
| 899 | 1) The interrupt handler had some wrong statement to wait for. This | ||
| 900 | was done due to experimental reasons during 3.2 development but it | ||
| 901 | has shown that this is not stable enough. Going back to wait for the | ||
| 902 | adapter to be not busy is best. | ||
| 903 | 2) Inquiry requests can be shorter than 255 bytes of return buffer. Due | ||
| 904 | to a bug in the ibmmca_queuecommand routine, this buffer was forced | ||
| 905 | to 255 at minimum. If the memory address, this return buffer is pointing | ||
| 906 | to does not offer more space, invalid memory accesses destabilized the | ||
| 907 | kernel. | ||
| 908 | 3) version 4.0 is only valid for kernel 2.4.0 or later. This is necessary | ||
| 909 | to remove old kernel version dependent waste from the driver. 3.2d is | ||
| 910 | only distributed with older kernels but keeps compatibility with older | ||
| 911 | kernel versions. 4.0 and higher versions cannot be used with older | ||
| 912 | kernels anymore!! You must have at least kernel 2.4.0!! | ||
| 913 | 4) The commandline argument 'bypass' and all its functionality got removed | ||
| 914 | in version 4.0. This was never really necessary, as all troubles were | ||
| 915 | based on non-command related reasons up to now, so bypassing commands | ||
| 916 | did not help to avoid any bugs. It is kept in 3.2X for debugging reasons. | ||
| 917 | 5) Dynamic reassignment of ldns was again verified and analyzed to be | ||
| 918 | completely inoperational. This is corrected and should work now. | ||
| 919 | 6) All commands that get sent to the SCSI adapter were verified and | ||
| 920 | completed in such a way, that they are now completely conform to the | ||
| 921 | demands in the technical description of IBM. Main candidates were the | ||
| 922 | DEVICE_INQUIRY, REQUEST_SENSE and DEVICE_CAPACITY commands. They must | ||
| 923 | be transferred by bypassing the internal command buffer of the adapter | ||
| 924 | or else the response can be a random result. GET_POS_INFO would be more | ||
| 925 | safe in usage, if one could use the SUPRESS_EXCEPTION_SHORT, but this | ||
| 926 | is not allowed by the technical references of IBM. (Sorry, folks, the | ||
| 927 | model 80 problem is still a task to be solved in a different way.) | ||
| 928 | 7) v3.2d is still hold back for some days for testing, while 4.0 is | ||
| 929 | released. | ||
| 930 | - Michael Lang | ||
| 931 | |||
| 932 | January 3, 2001 (v4.0a) | ||
| 933 | 1) A lot of complains after the 2.4.0-prerelease kernel came in about | ||
| 934 | the impossibility to compile the driver as a module. This problem is | ||
| 935 | solved. In combination with that problem, some unprecise declaration | ||
| 936 | of the function option_setup() gave some warnings during compilation. | ||
| 937 | This is solved, too by a forward declaration in ibmmca.c. | ||
| 938 | 2) #ifdef argument concerning CONFIG_SCSI_IBMMCA is no longer needed and | ||
| 939 | was entirely removed. | ||
| 940 | 3) Some switch statements got optimized in code, as some minor variables | ||
| 941 | in internal SCSI-command handlers. | ||
| 942 | - Michael Lang | ||
| 943 | |||
| 944 | 4 To do | ||
| 945 | ------- | ||
| 946 | - IBM SCSI-2 F/W external SCSI bus support in separate mode! | ||
| 947 | - It seems that the handling of bad disks is really bad - | ||
| 948 | non-existent, in fact. However, a low-level driver cannot help | ||
| 949 | much, if such things happen. | ||
| 950 | |||
| 951 | 5 Users' Manual | ||
| 952 | --------------- | ||
| 953 | 5.1 Commandline Parameters | ||
| 954 | -------------------------- | ||
| 955 | There exist several features for the IBM SCSI-subsystem driver. | ||
| 956 | The commandline parameter format is: | ||
| 957 | |||
| 958 | ibmmcascsi=<command1>,<command2>,<command3>,... | ||
| 959 | |||
| 960 | where commandN can be one of the following: | ||
| 961 | |||
| 962 | display Owners of a model 95 or other PS/2 systems with an | ||
| 963 | alphanumeric LED display may set this to have their | ||
| 964 | display showing the following output of the 8 digits: | ||
| 965 | |||
| 966 | ------DA | ||
| 967 | |||
| 968 | where '-' stays dark, 'D' shows the SCSI-device id | ||
| 969 | and 'A' shows the SCSI hostindex, being currently | ||
| 970 | accessed. During boottime, this will give the message | ||
| 971 | |||
| 972 | SCSIini* | ||
| 973 | |||
| 974 | on the LED-panel, where the * represents a rotator, | ||
| 975 | showing the activity during the probing phase of the | ||
| 976 | driver which can take up to two minutes per SCSI-adapter. | ||
| 977 | adisplay This works like display, but gives more optical overview | ||
| 978 | of the activities on the SCSI-bus. The display will have | ||
| 979 | the following output: | ||
| 980 | |||
| 981 | 6543210A | ||
| 982 | |||
| 983 | where the numbers 0 to 6 light up at the shown position, | ||
| 984 | when the SCSI-device is accessed. 'A' shows again the SCSI | ||
| 985 | hostindex. If display nor adisplay is set, the internal | ||
| 986 | PS/2 harddisk LED is used for media-activities. So, if | ||
| 987 | you really do not have a system with a LED-display, you | ||
| 988 | should not set display or adisplay. Keep in mind, that | ||
| 989 | display and adisplay can only be used alternatively. It | ||
| 990 | is not recommended to use this option, if you have some | ||
| 991 | wide-addressed devices e.g. at the SCSI-2 F/W adapter in | ||
| 992 | your system. In addition, the usage of the display for | ||
| 993 | other tasks in parallel, like the linuxinfo-utility makes | ||
| 994 | no sense with this option. | ||
| 995 | activity This enables the PS/2 harddisk LED activity indicator. | ||
| 996 | Most PS/2 have no alphanumeric LED display, but some | ||
| 997 | indicator. So you should use this parameter to activate it. | ||
| 998 | If you own model 9595 (Server95), you can have both, the | ||
| 999 | LED panel and the activity indicator in parallel. However, | ||
| 1000 | some PS/2s, like the 8595 do not have any harddisk LED | ||
| 1001 | activity indicator, which means, that you must use the | ||
| 1002 | alphanumeric LED display if you want to monitor SCSI- | ||
| 1003 | activity. | ||
| 1004 | bypass This is obsolete from driver version 4.0, as the adapters | ||
| 1005 | got that far understood, that the selection between | ||
| 1006 | integrated and bypassed commands should now work completely | ||
| 1007 | correct! For historical reasons, the old description is | ||
| 1008 | kept here: | ||
| 1009 | This commandline parameter forces the driver never to use | ||
| 1010 | SCSI-subsystems' integrated SCSI-command set. Except of | ||
| 1011 | the immediate assign, which is of vital importance for | ||
| 1012 | every IBM SCSI-subsystem to set its ldns right. Instead, | ||
| 1013 | the ordinary ANSI-SCSI-commands are used and passed by the | ||
| 1014 | controller to the SCSI-devices, therefore 'bypass'. The | ||
| 1015 | effort, done by the subsystem is quite bogus and at a | ||
| 1016 | minimum and therefore it should work everywhere. This | ||
| 1017 | could maybe solve troubles with old or integrated SCSI- | ||
| 1018 | controllers and nasty harddisks. Keep in mind, that using | ||
| 1019 | this flag will slow-down SCSI-accesses slightly, as the | ||
| 1020 | software generated commands are always slower than the | ||
| 1021 | hardware. Non-harddisk devices always get read/write- | ||
| 1022 | commands in bypass mode. On the most recent releases of | ||
| 1023 | the Linux IBM-SCSI-driver, the bypass command should be | ||
| 1024 | no longer a necessary thing, if you are sure about your | ||
| 1025 | SCSI-hardware! | ||
| 1026 | normal This is the parameter, introduced on the 2.0.x development | ||
| 1027 | rail by ZP Gu. This parameter defines the SCSI-device | ||
| 1028 | scan order in the new industry standard. This means, that | ||
| 1029 | the first SCSI-device is the one with the lowest pun. | ||
| 1030 | E.g. harddisk at pun=0 is scanned before harddisk at | ||
| 1031 | pun=6, which means, that harddisk at pun=0 gets sda | ||
| 1032 | and the one at pun=6 gets sdb. | ||
| 1033 | ansi The ANSI-standard for the right scan order, as done by | ||
| 1034 | IBM, Microware and Microsoft, scans SCSI-devices starting | ||
| 1035 | at the highest pun, which means, that e.g. harddisk at | ||
| 1036 | pun=6 gets sda and a harddisk at pun=0 gets sdb. If you | ||
| 1037 | like to have the same SCSI-device order, as in DOS, OS-9 | ||
| 1038 | or OS/2, just use this parameter. | ||
| 1039 | fast SCSI-I/O in synchronous mode is done at 5 MHz for IBM- | ||
| 1040 | SCSI-devices. SCSI-2 Fast/Wide Adapter/A external bus | ||
| 1041 | should then run at 10 MHz if Fast-SCSI is enabled, | ||
| 1042 | and at 5 MHz if Fast-SCSI is disabled on the external | ||
| 1043 | bus. This is the default setting when nothing is | ||
| 1044 | specified here. | ||
| 1045 | medium Synchronous rate is at 50% approximately, which means | ||
| 1046 | 2.5 MHz for IBM SCSI-adapters and 5.0 MHz for F/W ext. | ||
| 1047 | SCSI-bus (when Fast-SCSI speed enabled on external bus). | ||
| 1048 | slow The slowest possible synchronous transfer rate is set. | ||
| 1049 | This means 1.82 MHz for IBM SCSI-adapters and 2.0 MHz | ||
| 1050 | for F/W external bus at Fast-SCSI speed on the external | ||
| 1051 | bus. | ||
| 1052 | |||
| 1053 | A further option is that you can force the SCSI-driver to accept a SCSI- | ||
| 1054 | subsystem at a certain I/O-address with a predefined adapter PUN. This | ||
| 1055 | is done by entering | ||
| 1056 | |||
| 1057 | commandN = I/O-base | ||
| 1058 | commandN+1 = adapter PUN | ||
| 1059 | |||
| 1060 | e.g. ibmmcascsi=0x3540,7 will force the driver to detect a SCSI-subsystem | ||
| 1061 | at I/O-address 0x3540 with adapter PUN 7. Please only use this method, if | ||
| 1062 | the driver does really not recognize your SCSI-adapter! With driver version | ||
| 1063 | 3.2, this recognition of various adapters was hugely improved and you | ||
| 1064 | should try first to remove your commandline arguments of such type with a | ||
| 1065 | newer driver. I bet, it will be recognized correctly. Even multiple and | ||
| 1066 | different types of IBM SCSI-adapters should be recognized correctly, too. | ||
| 1067 | Use the forced detection method only as last solution! | ||
| 1068 | |||
| 1069 | Examples: | ||
| 1070 | |||
| 1071 | ibmmcascsi=adisplay | ||
| 1072 | |||
| 1073 | This will use the advanced display mode for the model 95 LED alphanumeric | ||
| 1074 | display. | ||
| 1075 | |||
| 1076 | ibmmcascsi=display,0x3558,7 | ||
| 1077 | |||
| 1078 | This will activate the default display mode for the model 95 LED display | ||
| 1079 | and will force the driver to accept a SCSI-subsystem at I/O-base 0x3558 | ||
| 1080 | with adapter PUN 7. | ||
| 1081 | |||
| 1082 | 5.2 Troubleshooting | ||
| 1083 | ------------------- | ||
| 1084 | The following FAQs should help you to solve some major problems with this | ||
| 1085 | driver. | ||
| 1086 | |||
| 1087 | Q: "Reset SCSI-devices at boottime" halts the system at boottime, why? | ||
| 1088 | A: This is only tested with the IBM SCSI Adapter w/cache. It is not | ||
| 1089 | yet proven to run on other adapters, however you may be lucky. | ||
| 1090 | In version 3.1d this has been hugely improved and should work better, | ||
| 1091 | now. Normally you really won't need to activate this flag in the | ||
| 1092 | kernel configuration, as all post 1989 SCSI-devices should accept | ||
| 1093 | the reset-signal, when the computer is switched on. The SCSI- | ||
| 1094 | subsystem generates this reset while being initialized. This flag | ||
| 1095 | is really reserved for users with very old, very strange or self-made | ||
| 1096 | SCSI-devices. | ||
| 1097 | Q: Why is the SCSI-order of my drives mirrored to the device-order | ||
| 1098 | seen from OS/2 or DOS ? | ||
| 1099 | A: It depends on the operating system, if it looks at the devices in | ||
| 1100 | ANSI-SCSI-standard (starting from pun 6 and going down to pun 0) or | ||
| 1101 | if it just starts at pun 0 and counts up. If you want to be conform | ||
| 1102 | with OS/2 and DOS, you have to activate this flag in the kernel | ||
| 1103 | configuration or you should set 'ansi' as parameter for the kernel. | ||
| 1104 | The parameter 'normal' sets the new industry standard, starting | ||
| 1105 | from pun 0, scanning up to pun 6. This allows you to change your | ||
| 1106 | opinion still after having already compiled the kernel. | ||
| 1107 | Q: Why can't I find IBM MCA SCSI support in the config menu? | ||
| 1108 | A: You have to activate MCA bus support, first. | ||
| 1109 | Q: Where can I find the latest info about this driver? | ||
| 1110 | A: See the file MAINTAINERS for the current WWW-address, which offers | ||
| 1111 | updates, info and Q/A lists. At this file's origin, the webaddress | ||
| 1112 | was: http://www.staff.uni-mainz.de/mlang/linux.html | ||
| 1113 | Q: My SCSI-adapter is not recognized by the driver, what can I do? | ||
| 1114 | A: Just force it to be recognized by kernel parameters. See section 5.1. | ||
| 1115 | If this really happens, do also send e-mail to the maintainer, as | ||
| 1116 | forced detection should be never necessary. Forced detection is in | ||
| 1117 | principal some flaw of the driver adapter detection and goes into | ||
| 1118 | bug reports. | ||
| 1119 | Q: The driver screws up, if it starts to probe SCSI-devices, is there | ||
| 1120 | some way out of it? | ||
| 1121 | A: Yes, that was some recognition problem of the correct SCSI-adapter | ||
| 1122 | and its I/O base addresses. Upgrade your driver to the latest release | ||
| 1123 | and it should be fine again. | ||
| 1124 | Q: I get a message: panic IBM MCA SCSI: command error .... , what can | ||
| 1125 | I do against this? | ||
| 1126 | A: Previously, I followed the way by ignoring command errors by using | ||
| 1127 | ibmmcascsi=forgiveall, but this command no longer exists and is | ||
| 1128 | obsolete. If such a problem appears, it is caused by some segmentation | ||
| 1129 | fault of the driver, which maps to some unallowed area. The latest | ||
| 1130 | version of the driver should be ok, as most bugs have been solved. | ||
| 1131 | Q: There are still kernel panics, even after having set | ||
| 1132 | ibmmcascsi=forgiveall. Are there other possibilities to prevent | ||
| 1133 | such panics? | ||
| 1134 | A: No, get just the latest release of the driver and it should work | ||
| 1135 | better and better with increasing version number. Forget about this | ||
| 1136 | ibmmcascsi=forgiveall, as also ignorecmd are obsolete.! | ||
| 1137 | Q: Linux panics or stops without any comment, but it is probable, that my | ||
| 1138 | harddisk(s) have bad blocks. | ||
| 1139 | A: Sorry, the bad-block handling is still a feeble point of this driver, | ||
| 1140 | but is on the schedule for development in the near future. | ||
| 1141 | Q: Linux panics while dynamically assigning SCSI-ids or ldns. | ||
| 1142 | A: If you disconnect a SCSI-device from the machine, while Linux is up | ||
| 1143 | and the driver uses dynamical reassignment of logical device numbers | ||
| 1144 | (ldn), it really gets "angry" if it won't find devices, that were still | ||
| 1145 | present at boottime and stops Linux. | ||
| 1146 | Q: The system does not recover after an abort-command has been generated. | ||
| 1147 | A: This is regrettably true, as it is not yet understood, why the | ||
| 1148 | SCSI-adapter does really NOT generate any interrupt at the end of | ||
| 1149 | the abort-command. As no interrupt is generated, the abort command | ||
| 1150 | cannot get finished and the system hangs, sorry, but checks are | ||
| 1151 | running to hunt down this problem. If there is a real pending command, | ||
| 1152 | the interrupt MUST get generated after abort. In this case, it | ||
| 1153 | should finish well. | ||
| 1154 | Q: The system gets in bad shape after a SCSI-reset, is this known? | ||
| 1155 | A: Yes, as there are a lot of prescriptions (see the Linux Hackers' | ||
| 1156 | Guide) what has to be done for reset, we still share the bad shape of | ||
| 1157 | the reset functions with all other low level SCSI-drivers. | ||
| 1158 | Astonishingly, reset works in most cases quite ok, but the harddisks | ||
| 1159 | won't run in synchronous mode anymore after a reset, until you reboot. | ||
| 1160 | Q: Why does my XXX w/Cache adapter not use read-prefetch? | ||
| 1161 | A: Ok, that is not completely possible. If a cache is present, the | ||
| 1162 | adapter tries to use it internally. Explicitly, one can use the cache | ||
| 1163 | with a read prefetch command, maybe in future, but this requires | ||
| 1164 | some major overhead of SCSI-commands that risks the performance to | ||
| 1165 | go down more than it gets improved. Tests with that are running. | ||
| 1166 | Q: I have a IBM SCSI-2 Fast/Wide adapter, it boots in some way and hangs. | ||
| 1167 | A: Yes, that is understood, as for sure, your SCSI-2 Fast/Wide adapter | ||
| 1168 | was in such a case recognized as integrated SCSI-adapter or something | ||
| 1169 | else, but not as the correct adapter. As the I/O-ports get assigned | ||
| 1170 | wrongly by that reason, the system should crash in most cases. You | ||
| 1171 | should upgrade to the latest release of the SCSI-driver. The | ||
| 1172 | recommended version is 3.2 or later. Here, the F/W support is in | ||
| 1173 | a stable and reliable condition. Wide-addressing is in addition | ||
| 1174 | supported. | ||
| 1175 | Q: I get an Oops message and something like "killing interrupt". | ||
| 1176 | A: The reason for this is that the IBM SCSI-subsystem only sends a | ||
| 1177 | termination status back, if some error appeared. In former releases | ||
| 1178 | of the driver, it was not checked, if the termination status block | ||
| 1179 | is NULL. From version 3.2, it is taken care of this. | ||
| 1180 | Q: I have a F/W adapter and the driver sees my internal SCSI-devices, | ||
| 1181 | but ignores the external ones. | ||
| 1182 | A: Select combined busmode in the IBM config-program and check for that | ||
| 1183 | no SCSI-id on the external devices appears on internal devices. | ||
| 1184 | Reboot afterwards. Dual busmode is supported, but works only for the | ||
| 1185 | internal bus, yet. External bus is still ignored. Take care for your | ||
| 1186 | SCSI-ids. If combined bus-mode is activated, on some adapters, | ||
| 1187 | the wide-addressing is not possible, so devices with ids between 8 | ||
| 1188 | and 15 get ignored by the driver & adapter! | ||
| 1189 | Q: I have a 9595 and I get a NMI during heavy SCSI I/O e.g. during fsck. | ||
| 1190 | A COMMAND ERROR is reported and characters on the screen are missing. | ||
| 1191 | Warm reboot is not possible. Things look like quite weird. | ||
| 1192 | A: Check the processor type of your 9595. If you have an 80486 or 486DX-2 | ||
| 1193 | processor complex on your mainboard and you compiled a kernel that | ||
| 1194 | supports 80386 processors, it is possible, that the kernel cannot | ||
| 1195 | keep track of the PS/2 interrupt handling and stops on an NMI. Just | ||
| 1196 | compile a kernel for the correct processor type of your PS/2 and | ||
| 1197 | everything should be fine. This is necessary even if one assumes, | ||
| 1198 | that some 80486 system should be downward compatible to 80386 | ||
| 1199 | software. | ||
| 1200 | Q: Some commands hang and interrupts block the machine. After some | ||
| 1201 | timeout, the syslog reports that it tries to call abort, but the | ||
| 1202 | machine is frozen. | ||
| 1203 | A: This can be a busy wait bug in the interrupt handler of driver | ||
| 1204 | version 3.2. You should at least upgrade to 3.2c if you use | ||
| 1205 | kernel < 2.4.0 and driver version 4.0 if you use kernel 2.4.0 or | ||
| 1206 | later (including all test releases). | ||
| 1207 | Q: I have a PS/2 model 80 and more than 16 MBytes of RAM. The driver | ||
| 1208 | completely refuses to work, reports NMIs, COMMAND ERRORs or other | ||
| 1209 | ambiguous stuff. When reducing the RAM size down below 16 MB, | ||
| 1210 | everything is running smoothly. | ||
| 1211 | A: No real answer, yet. In any case, one should force the kernel to | ||
| 1212 | present SCBs only below the 16 MBytes barrier. Maybe this solves the | ||
| 1213 | problem. Not yet tried, but guessing that it could work. To get this, | ||
| 1214 | set unchecked_isa_dma argument of ibmmca.h from 0 to 1. | ||
| 1215 | |||
| 1216 | 5.3 Bug reports | ||
| 1217 | -------------- | ||
| 1218 | If you really find bugs in the source code or the driver will successfully | ||
| 1219 | refuse to work on your machine, you should send a bug report to me. The | ||
| 1220 | best for this is to follow the instructions on the WWW-page for this | ||
| 1221 | driver. Fill out the bug-report form, placed on the WWW-page and ship it, | ||
| 1222 | so the bugs can be taken into account with maximum efforts. But, please | ||
| 1223 | do not send bug reports about this driver to Linus Torvalds or Leonard | ||
| 1224 | Zubkoff, as Linus is buried in E-Mail and Leonard is supervising all | ||
| 1225 | SCSI-drivers and won't have the time left to look inside every single | ||
| 1226 | driver to fix a bug and especially DO NOT send modified code to Linus | ||
| 1227 | Torvalds or Alan J. Cox which has not been checked here!!! They are both | ||
| 1228 | quite buried in E-mail (as me, sometimes, too) and one should first check | ||
| 1229 | for problems on my local teststand. Recently, I got a lot of | ||
| 1230 | bug reports for errors in the ibmmca.c code, which I could not imagine, but | ||
| 1231 | a look inside some Linux-distribution showed me quite often some modified | ||
| 1232 | code, which did no longer work on most other machines than the one of the | ||
| 1233 | modifier. Ok, so now that there is maintenance service available for this | ||
| 1234 | driver, please use this address first in order to keep the level of | ||
| 1235 | confusion low. Thank you! | ||
| 1236 | |||
| 1237 | When you get a SCSI-error message that panics your system, a list of | ||
| 1238 | register-entries of the SCSI-subsystem is shown (from Version 3.1d). With | ||
| 1239 | this list, it is very easy for the maintainer to localize the problem in | ||
| 1240 | the driver or in the configuration of the user. Please write down all the | ||
| 1241 | values from this report and send them to the maintainer. This would really | ||
| 1242 | help a lot and makes life easier concerning misunderstandings. | ||
| 1243 | |||
| 1244 | Use the bug-report form (see 5.4 for its address) to send all the bug- | ||
| 1245 | stuff to the maintainer or write e-mail with the values from the table. | ||
| 1246 | |||
| 1247 | 5.4 Support WWW-page | ||
| 1248 | -------------------- | ||
| 1249 | The address of the IBM SCSI-subsystem supporting WWW-page is: | ||
| 1250 | |||
| 1251 | http://www.staff.uni-mainz.de/mlang/linux.html | ||
| 1252 | |||
| 1253 | Here you can find info about the background of this driver, patches, | ||
| 1254 | troubleshooting support, news and a bugreport form. Please check that | ||
| 1255 | WWW-page regularly for latest hints. If ever this URL changes, please | ||
| 1256 | refer to the MAINTAINERS file in order to get the latest address. | ||
| 1257 | |||
| 1258 | For the bugreport, please fill out the formular on the corresponding | ||
| 1259 | WWW-page. Read the dedicated instructions and write as much as you | ||
| 1260 | know about your problem. If you do not like such formulars, please send | ||
| 1261 | some e-mail directly, but at least with the same information as required by | ||
| 1262 | the formular. | ||
| 1263 | |||
| 1264 | If you have extensive bug reports, including Oops messages and | ||
| 1265 | screen-shots, please feel free to send it directly to the address | ||
| 1266 | of the maintainer, too. The current address of the maintainer is: | ||
| 1267 | |||
| 1268 | Michael Lang <langa2@kph.uni-mainz.de> | ||
| 1269 | |||
| 1270 | 6 References | ||
| 1271 | ------------ | ||
| 1272 | IBM Corp., "Update for the PS/2 Hardware Interface Technical Reference, | ||
| 1273 | Common Interfaces", Armonk, September 1991, PN 04G3281, | ||
| 1274 | (available in the U.S. for $21.75 at 1-800-IBM-PCTB or in Germany for | ||
| 1275 | around 40,-DM at "Hallo IBM"). | ||
| 1276 | |||
| 1277 | IBM Corp., "Personal System/2 Micro Channel SCSI | ||
| 1278 | Adapter with Cache Technical Reference", Armonk, March 1990, PN 68X2365. | ||
| 1279 | |||
| 1280 | IBM Corp., "Personal System/2 Micro Channel SCSI | ||
| 1281 | Adapter Technical Reference", Armonk, March 1990, PN 68X2397. | ||
| 1282 | |||
| 1283 | IBM Corp., "SCSI-2 Fast/Wide Adapter/A Technical Reference - Dual Bus", | ||
| 1284 | Armonk, March 1994, PN 83G7545. | ||
| 1285 | |||
| 1286 | Friedhelm Schmidt, "SCSI-Bus und IDE-Schnittstelle - Moderne Peripherie- | ||
| 1287 | Schnittstellen: Hardware, Protokollbeschreibung und Anwendung", 2. Aufl. | ||
| 1288 | Addison Wesley, 1996. | ||
| 1289 | |||
| 1290 | Michael K. Johnson, "The Linux Kernel Hackers' Guide", Version 0.6, Chapel | ||
| 1291 | Hill - North Carolina, 1995 | ||
| 1292 | |||
| 1293 | Andreas Kaiser, "SCSI TAPE BACKUP for OS/2 2.0", Version 2.12, Stuttgart | ||
| 1294 | 1993 | ||
| 1295 | |||
| 1296 | Helmut Rompel, "IBM Computerwelt GUIDE", What is what bei IBM., Systeme * | ||
| 1297 | Programme * Begriffe, IWT-Verlag GmbH - Muenchen, 1988 | ||
| 1298 | |||
| 1299 | 7 Credits to | ||
| 1300 | ------------ | ||
| 1301 | 7.1 People | ||
| 1302 | ---------- | ||
| 1303 | Klaus Grimm | ||
| 1304 | who already a long time ago gave me the old code from the | ||
| 1305 | SCSI-driver in order to get it running for some old machine | ||
| 1306 | in our institute. | ||
| 1307 | Martin Kolinek | ||
| 1308 | who wrote the first release of the IBM SCSI-subsystem driver. | ||
| 1309 | Chris Beauregard | ||
| 1310 | who for a long time maintained MCA-Linux and the SCSI-driver | ||
| 1311 | in the beginning. Chris, wherever you are: Cheers to you! | ||
| 1312 | Klaus Kudielka | ||
| 1313 | with whom in the 2.1.x times, I had a quite fruitful | ||
| 1314 | cooperation to get the driver running as a module and to get | ||
| 1315 | it running with multiple SCSI-adapters. | ||
| 1316 | David Weinehall | ||
| 1317 | for his excellent maintenance of the MCA-stuff and the quite | ||
| 1318 | detailed bug reports and ideas for this driver (and his | ||
| 1319 | patience ;-)). | ||
| 1320 | Alan J. Cox | ||
| 1321 | for his bug reports and his bold activities in cross-checking | ||
| 1322 | the driver-code with his teststand. | ||
| 1323 | |||
| 1324 | 7.2 Sponsors & Supporters | ||
| 1325 | ------------------------- | ||
| 1326 | "Hallo IBM", | ||
| 1327 | IBM-Deutschland GmbH | ||
| 1328 | the service of IBM-Deutschland for customers. Their E-Mail | ||
| 1329 | service is unbeatable. Whatever old stuff I asked for, I | ||
| 1330 | always got some helpful answers. | ||
| 1331 | Karl-Otto Reimers, | ||
| 1332 | IBM Klub - Sparte IBM Geschichte, Sindelfingen | ||
| 1333 | for sending me a copy of the w/Cache manual from the | ||
| 1334 | IBM-Deutschland archives. | ||
| 1335 | Harald Staiger | ||
| 1336 | for his extensive hardware donations which allows me today | ||
| 1337 | still to test the driver in various constellations. | ||
| 1338 | Erich Fritscher | ||
| 1339 | for his very kind sponsoring. | ||
| 1340 | Louis Ohland, | ||
| 1341 | Charles Lasitter | ||
| 1342 | for support by shipping me an IBM SCSI-2 Fast/Wide manual. | ||
| 1343 | In addition, the contribution of various hardware is quite | ||
| 1344 | decessive and will make it possible to add FWSR (RAID) | ||
| 1345 | adapter support to the driver in the near future! So, | ||
| 1346 | complaints about no RAID support won't remain forever. | ||
| 1347 | Yes, folks, that is no joke, RAID support is going to rise! | ||
| 1348 | Erik Weber | ||
| 1349 | for the great deal we made about a model 9595 and the nice | ||
| 1350 | surrounding equipment and the cool trip to Mannheim | ||
| 1351 | second-hand computer market. In addition, I would like | ||
| 1352 | to thank him for his exhaustive SCSI-driver testing on his | ||
| 1353 | 95er PS/2 park. | ||
| 1354 | Anthony Hogbin | ||
| 1355 | for his direct shipment of a SCSI F/W adapter, which allowed | ||
| 1356 | me immediately on the first stage to try it on model 8557 | ||
| 1357 | together with onboard SCSI adapter and some SCSI w/Cache. | ||
| 1358 | Andreas Hotz | ||
| 1359 | for his support by memory and an IBM SCSI-adapter. Collecting | ||
| 1360 | all this together now allows me to try really things with | ||
| 1361 | the driver at maximum load and variety on various models in | ||
| 1362 | a very quick and efficient way. | ||
| 1363 | Peter Jennewein | ||
| 1364 | for his model 30, which serves me as part of my teststand | ||
| 1365 | and his cool remark about how you make an ordinary diskette | ||
| 1366 | drive working and how to connect it to an IBM-diskette port. | ||
| 1367 | Johannes Gutenberg-Universitaet, Mainz & | ||
| 1368 | Institut fuer Kernphysik, Mainz Microtron (MAMI) | ||
| 1369 | for the offered space, the link, placed on the central | ||
| 1370 | homepage and the space to store and offer the driver and | ||
| 1371 | related material and the free working times, which allow | ||
| 1372 | me to answer all your e-mail. | ||
| 1373 | |||
| 1374 | 8 Trademarks | ||
| 1375 | ------------ | ||
| 1376 | IBM, PS/2, OS/2, Microchannel are registered trademarks of International | ||
| 1377 | Business Machines Corporation | ||
| 1378 | |||
| 1379 | MS-DOS is a registered trademark of Microsoft Corporation | ||
| 1380 | |||
| 1381 | Microware, OS-9 are registered trademarks of Microware Systems | ||
| 1382 | |||
| 1383 | 9 Disclaimer | ||
| 1384 | ------------ | ||
| 1385 | Beside the GNU General Public License and the dependent disclaimers and disclaimers | ||
| 1386 | concerning the Linux-kernel in special, this SCSI-driver comes without any | ||
| 1387 | warranty. Its functionality is tested as good as possible on certain | ||
| 1388 | machines and combinations of computer hardware, which does not exclude, | ||
| 1389 | that data loss or severe damage of hardware is possible while using this | ||
| 1390 | part of software on some arbitrary computer hardware or in combination | ||
| 1391 | with other software packages. It is highly recommended to make backup | ||
| 1392 | copies of your data before using this software. Furthermore, personal | ||
| 1393 | injuries by hardware defects, that could be caused by this SCSI-driver are | ||
| 1394 | not excluded and it is highly recommended to handle this driver with a | ||
| 1395 | maximum of carefulness. | ||
| 1396 | |||
| 1397 | This driver supports hardware, produced by International Business Machines | ||
| 1398 | Corporation (IBM). | ||
| 1399 | |||
| 1400 | ------ | ||
| 1401 | Michael Lang | ||
| 1402 | (langa2@kph.uni-mainz.de) | ||
diff --git a/Documentation/scsi/scsi-parameters.txt b/Documentation/scsi/scsi-parameters.txt index 21e5798526ee..2bfd6f6d2d3d 100644 --- a/Documentation/scsi/scsi-parameters.txt +++ b/Documentation/scsi/scsi-parameters.txt | |||
| @@ -37,9 +37,6 @@ parameters may be changed at runtime by the command | |||
| 37 | 37 | ||
| 38 | eata= [HW,SCSI] | 38 | eata= [HW,SCSI] |
| 39 | 39 | ||
| 40 | fd_mcs= [HW,SCSI] | ||
| 41 | See header of drivers/scsi/fd_mcs.c. | ||
| 42 | |||
| 43 | fdomain= [HW,SCSI] | 40 | fdomain= [HW,SCSI] |
| 44 | See header of drivers/scsi/fdomain.c. | 41 | See header of drivers/scsi/fdomain.c. |
| 45 | 42 | ||
| @@ -48,9 +45,6 @@ parameters may be changed at runtime by the command | |||
| 48 | 45 | ||
| 49 | gvp11= [HW,SCSI] | 46 | gvp11= [HW,SCSI] |
| 50 | 47 | ||
| 51 | ibmmcascsi= [HW,MCA,SCSI] IBM MicroChannel SCSI adapter | ||
| 52 | See Documentation/mca.txt. | ||
| 53 | |||
| 54 | in2000= [HW,SCSI] | 48 | in2000= [HW,SCSI] |
| 55 | See header of drivers/scsi/in2000.c. | 49 | See header of drivers/scsi/in2000.c. |
| 56 | 50 | ||
diff --git a/Documentation/scsi/scsi_mid_low_api.txt b/Documentation/scsi/scsi_mid_low_api.txt index a340b18cd4eb..2b06aba4fa0f 100644 --- a/Documentation/scsi/scsi_mid_low_api.txt +++ b/Documentation/scsi/scsi_mid_low_api.txt | |||
| @@ -30,7 +30,7 @@ the motherboard (or both). Some aic7xxx based HBAs are dual controllers | |||
| 30 | and thus represent two hosts. Like most modern HBAs, each aic7xxx host | 30 | and thus represent two hosts. Like most modern HBAs, each aic7xxx host |
| 31 | has its own PCI device address. [The one-to-one correspondence between | 31 | has its own PCI device address. [The one-to-one correspondence between |
| 32 | a SCSI host and a PCI device is common but not required (e.g. with | 32 | a SCSI host and a PCI device is common but not required (e.g. with |
| 33 | ISA or MCA adapters).] | 33 | ISA adapters).] |
| 34 | 34 | ||
| 35 | The SCSI mid level isolates an LLD from other layers such as the SCSI | 35 | The SCSI mid level isolates an LLD from other layers such as the SCSI |
| 36 | upper layer drivers and the block layer. | 36 | upper layer drivers and the block layer. |
diff --git a/drivers/scsi/Kconfig b/drivers/scsi/Kconfig index 29684c8142b0..7a66d0e97dd3 100644 --- a/drivers/scsi/Kconfig +++ b/drivers/scsi/Kconfig | |||
| @@ -807,19 +807,6 @@ config SCSI_FUTURE_DOMAIN | |||
| 807 | To compile this driver as a module, choose M here: the | 807 | To compile this driver as a module, choose M here: the |
| 808 | module will be called fdomain. | 808 | module will be called fdomain. |
| 809 | 809 | ||
| 810 | config SCSI_FD_MCS | ||
| 811 | tristate "Future Domain MCS-600/700 SCSI support" | ||
| 812 | depends on MCA_LEGACY && SCSI | ||
| 813 | ---help--- | ||
| 814 | This is support for Future Domain MCS 600/700 MCA SCSI adapters. | ||
| 815 | Some PS/2 computers are equipped with IBM Fast SCSI Adapter/A which | ||
| 816 | is identical to the MCS 700 and hence also supported by this driver. | ||
| 817 | This driver also supports the Reply SB16/SCSI card (the SCSI part). | ||
| 818 | It supports multiple adapters in the same system. | ||
| 819 | |||
| 820 | To compile this driver as a module, choose M here: the | ||
| 821 | module will be called fd_mcs. | ||
| 822 | |||
| 823 | config SCSI_GDTH | 810 | config SCSI_GDTH |
| 824 | tristate "Intel/ICP (former GDT SCSI Disk Array) RAID Controller support" | 811 | tristate "Intel/ICP (former GDT SCSI Disk Array) RAID Controller support" |
| 825 | depends on (ISA || EISA || PCI) && SCSI && ISA_DMA_API | 812 | depends on (ISA || EISA || PCI) && SCSI && ISA_DMA_API |
| @@ -889,76 +876,6 @@ config SCSI_GENERIC_NCR53C400 | |||
| 889 | not detect your card. See the file | 876 | not detect your card. See the file |
| 890 | <file:Documentation/scsi/g_NCR5380.txt> for details. | 877 | <file:Documentation/scsi/g_NCR5380.txt> for details. |
| 891 | 878 | ||
| 892 | config SCSI_IBMMCA | ||
| 893 | tristate "IBMMCA SCSI support" | ||
| 894 | depends on MCA && SCSI | ||
| 895 | ---help--- | ||
| 896 | This is support for the IBM SCSI adapter found in many of the PS/2 | ||
| 897 | series computers. These machines have an MCA bus, so you need to | ||
| 898 | answer Y to "MCA support" as well and read | ||
| 899 | <file:Documentation/mca.txt>. | ||
| 900 | |||
| 901 | If the adapter isn't found during boot (a common problem for models | ||
| 902 | 56, 57, 76, and 77) you'll need to use the 'ibmmcascsi=<pun>' kernel | ||
| 903 | option, where <pun> is the id of the SCSI subsystem (usually 7, but | ||
| 904 | if that doesn't work check your reference diskette). Owners of | ||
| 905 | model 95 with a LED-matrix-display can in addition activate some | ||
| 906 | activity info like under OS/2, but more informative, by setting | ||
| 907 | 'ibmmcascsi=display' as an additional kernel parameter. Try "man | ||
| 908 | bootparam" or see the documentation of your boot loader about how to | ||
| 909 | pass options to the kernel. | ||
| 910 | |||
| 911 | To compile this driver as a module, choose M here: the | ||
| 912 | module will be called ibmmca. | ||
| 913 | |||
| 914 | config IBMMCA_SCSI_ORDER_STANDARD | ||
| 915 | bool "Standard SCSI-order" | ||
| 916 | depends on SCSI_IBMMCA | ||
| 917 | ---help--- | ||
| 918 | In the PC-world and in most modern SCSI-BIOS-setups, SCSI-hard disks | ||
| 919 | are assigned to the drive letters, starting with the lowest SCSI-id | ||
| 920 | (physical number -- pun) to be drive C:, as seen from DOS and | ||
| 921 | similar operating systems. When looking into papers describing the | ||
| 922 | ANSI-SCSI-standard, this assignment of drives appears to be wrong. | ||
| 923 | The SCSI-standard follows a hardware-hierarchy which says that id 7 | ||
| 924 | has the highest priority and id 0 the lowest. Therefore, the host | ||
| 925 | adapters are still today everywhere placed as SCSI-id 7 by default. | ||
| 926 | In the SCSI-standard, the drive letters express the priority of the | ||
| 927 | disk. C: should be the hard disk, or a partition on it, with the | ||
| 928 | highest priority. This must therefore be the disk with the highest | ||
| 929 | SCSI-id (e.g. 6) and not the one with the lowest! IBM-BIOS kept the | ||
| 930 | original definition of the SCSI-standard as also industrial- and | ||
| 931 | process-control-machines, like VME-CPUs running under realtime-OSes | ||
| 932 | (e.g. LynxOS, OS9) do. | ||
| 933 | |||
| 934 | If you like to run Linux on your MCA-machine with the same | ||
| 935 | assignment of hard disks as seen from e.g. DOS or OS/2 on your | ||
| 936 | machine, which is in addition conformant to the SCSI-standard, you | ||
| 937 | must say Y here. This is also necessary for MCA-Linux users who want | ||
| 938 | to keep downward compatibility to older releases of the | ||
| 939 | IBM-MCA-SCSI-driver (older than driver-release 2.00 and older than | ||
| 940 | June 1997). | ||
| 941 | |||
| 942 | If you like to have the lowest SCSI-id assigned as drive C:, as | ||
| 943 | modern SCSI-BIOSes do, which does not conform to the standard, but | ||
| 944 | is widespread and common in the PC-world of today, you must say N | ||
| 945 | here. If unsure, say Y. | ||
| 946 | |||
| 947 | config IBMMCA_SCSI_DEV_RESET | ||
| 948 | bool "Reset SCSI-devices at boottime" | ||
| 949 | depends on SCSI_IBMMCA | ||
| 950 | ---help--- | ||
| 951 | By default, SCSI-devices are reset when the machine is powered on. | ||
| 952 | However, some devices exist, like special-control-devices, | ||
| 953 | SCSI-CNC-machines, SCSI-printer or scanners of older type, that do | ||
| 954 | not reset when switched on. If you say Y here, each device connected | ||
| 955 | to your SCSI-bus will be issued a reset-command after it has been | ||
| 956 | probed, while the kernel is booting. This may cause problems with | ||
| 957 | more modern devices, like hard disks, which do not appreciate these | ||
| 958 | reset commands, and can cause your system to hang. So say Y only if | ||
| 959 | you know that one of your older devices needs it; N is the safe | ||
| 960 | answer. | ||
| 961 | |||
| 962 | config SCSI_IPS | 879 | config SCSI_IPS |
| 963 | tristate "IBM ServeRAID support" | 880 | tristate "IBM ServeRAID support" |
| 964 | depends on PCI && SCSI | 881 | depends on PCI && SCSI |
diff --git a/drivers/scsi/Makefile b/drivers/scsi/Makefile index 8deedeaf5608..1a3368b08615 100644 --- a/drivers/scsi/Makefile +++ b/drivers/scsi/Makefile | |||
| @@ -75,7 +75,6 @@ obj-$(CONFIG_SCSI_AIC94XX) += aic94xx/ | |||
| 75 | obj-$(CONFIG_SCSI_PM8001) += pm8001/ | 75 | obj-$(CONFIG_SCSI_PM8001) += pm8001/ |
| 76 | obj-$(CONFIG_SCSI_ISCI) += isci/ | 76 | obj-$(CONFIG_SCSI_ISCI) += isci/ |
| 77 | obj-$(CONFIG_SCSI_IPS) += ips.o | 77 | obj-$(CONFIG_SCSI_IPS) += ips.o |
| 78 | obj-$(CONFIG_SCSI_FD_MCS) += fd_mcs.o | ||
| 79 | obj-$(CONFIG_SCSI_FUTURE_DOMAIN)+= fdomain.o | 78 | obj-$(CONFIG_SCSI_FUTURE_DOMAIN)+= fdomain.o |
| 80 | obj-$(CONFIG_SCSI_IN2000) += in2000.o | 79 | obj-$(CONFIG_SCSI_IN2000) += in2000.o |
| 81 | obj-$(CONFIG_SCSI_GENERIC_NCR5380) += g_NCR5380.o | 80 | obj-$(CONFIG_SCSI_GENERIC_NCR5380) += g_NCR5380.o |
| @@ -100,7 +99,6 @@ obj-$(CONFIG_SCSI_SYM53C8XX_2) += sym53c8xx_2/ | |||
| 100 | obj-$(CONFIG_SCSI_ZALON) += zalon7xx.o | 99 | obj-$(CONFIG_SCSI_ZALON) += zalon7xx.o |
| 101 | obj-$(CONFIG_SCSI_EATA_PIO) += eata_pio.o | 100 | obj-$(CONFIG_SCSI_EATA_PIO) += eata_pio.o |
| 102 | obj-$(CONFIG_SCSI_7000FASST) += wd7000.o | 101 | obj-$(CONFIG_SCSI_7000FASST) += wd7000.o |
| 103 | obj-$(CONFIG_SCSI_IBMMCA) += ibmmca.o | ||
| 104 | obj-$(CONFIG_SCSI_EATA) += eata.o | 102 | obj-$(CONFIG_SCSI_EATA) += eata.o |
| 105 | obj-$(CONFIG_SCSI_DC395x) += dc395x.o | 103 | obj-$(CONFIG_SCSI_DC395x) += dc395x.o |
| 106 | obj-$(CONFIG_SCSI_DC390T) += tmscsim.o | 104 | obj-$(CONFIG_SCSI_DC390T) += tmscsim.o |
diff --git a/drivers/scsi/aha1542.c b/drivers/scsi/aha1542.c index ede91f378000..f79c8f9e33a4 100644 --- a/drivers/scsi/aha1542.c +++ b/drivers/scsi/aha1542.c | |||
| @@ -22,7 +22,7 @@ | |||
| 22 | * Added module command-line options | 22 | * Added module command-line options |
| 23 | * 19-Jul-99 | 23 | * 19-Jul-99 |
| 24 | * Modified by Adam Fritzler | 24 | * Modified by Adam Fritzler |
| 25 | * Added proper detection of the AHA-1640 (MCA version of AHA-1540) | 25 | * Added proper detection of the AHA-1640 (MCA, now deleted) |
| 26 | */ | 26 | */ |
| 27 | 27 | ||
| 28 | #include <linux/module.h> | 28 | #include <linux/module.h> |
| @@ -37,8 +37,6 @@ | |||
| 37 | #include <linux/spinlock.h> | 37 | #include <linux/spinlock.h> |
| 38 | #include <linux/isapnp.h> | 38 | #include <linux/isapnp.h> |
| 39 | #include <linux/blkdev.h> | 39 | #include <linux/blkdev.h> |
| 40 | #include <linux/mca.h> | ||
| 41 | #include <linux/mca-legacy.h> | ||
| 42 | #include <linux/slab.h> | 40 | #include <linux/slab.h> |
| 43 | 41 | ||
| 44 | #include <asm/dma.h> | 42 | #include <asm/dma.h> |
| @@ -71,7 +69,7 @@ | |||
| 71 | #define MAXBOARDS 4 /* Increase this and the sizes of the | 69 | #define MAXBOARDS 4 /* Increase this and the sizes of the |
| 72 | arrays below, if you need more.. */ | 70 | arrays below, if you need more.. */ |
| 73 | 71 | ||
| 74 | /* Boards 3,4 slots are reserved for ISAPnP/MCA scans */ | 72 | /* Boards 3,4 slots are reserved for ISAPnP scans */ |
| 75 | 73 | ||
| 76 | static unsigned int bases[MAXBOARDS] __initdata = {0x330, 0x334, 0, 0}; | 74 | static unsigned int bases[MAXBOARDS] __initdata = {0x330, 0x334, 0, 0}; |
| 77 | 75 | ||
| @@ -1009,66 +1007,6 @@ static int __init aha1542_detect(struct scsi_host_template * tpnt) | |||
| 1009 | #endif | 1007 | #endif |
| 1010 | 1008 | ||
| 1011 | /* | 1009 | /* |
| 1012 | * Find MicroChannel cards (AHA1640) | ||
| 1013 | */ | ||
| 1014 | #ifdef CONFIG_MCA_LEGACY | ||
| 1015 | if(MCA_bus) { | ||
| 1016 | int slot = 0; | ||
| 1017 | int pos = 0; | ||
| 1018 | |||
| 1019 | for (indx = 0; (slot != MCA_NOTFOUND) && (indx < ARRAY_SIZE(bases)); indx++) { | ||
| 1020 | |||
| 1021 | if (bases[indx]) | ||
| 1022 | continue; | ||
| 1023 | |||
| 1024 | /* Detect only AHA-1640 cards -- MCA ID 0F1F */ | ||
| 1025 | slot = mca_find_unused_adapter(0x0f1f, slot); | ||
| 1026 | if (slot == MCA_NOTFOUND) | ||
| 1027 | break; | ||
| 1028 | |||
| 1029 | /* Found one */ | ||
| 1030 | pos = mca_read_stored_pos(slot, 3); | ||
| 1031 | |||
| 1032 | /* Decode address */ | ||
| 1033 | if (pos & 0x80) { | ||
| 1034 | if (pos & 0x02) { | ||
| 1035 | if (pos & 0x01) | ||
| 1036 | bases[indx] = 0x334; | ||
| 1037 | else | ||
| 1038 | bases[indx] = 0x234; | ||
| 1039 | } else { | ||
| 1040 | if (pos & 0x01) | ||
| 1041 | bases[indx] = 0x134; | ||
| 1042 | } | ||
| 1043 | } else { | ||
| 1044 | if (pos & 0x02) { | ||
| 1045 | if (pos & 0x01) | ||
| 1046 | bases[indx] = 0x330; | ||
| 1047 | else | ||
| 1048 | bases[indx] = 0x230; | ||
| 1049 | } else { | ||
| 1050 | if (pos & 0x01) | ||
| 1051 | bases[indx] = 0x130; | ||
| 1052 | } | ||
| 1053 | } | ||
| 1054 | |||
| 1055 | /* No need to decode IRQ and Arb level -- those are | ||
| 1056 | * read off the card later. | ||
| 1057 | */ | ||
| 1058 | printk(KERN_INFO "Found an AHA-1640 in MCA slot %d, I/O 0x%04x\n", slot, bases[indx]); | ||
| 1059 | |||
| 1060 | mca_set_adapter_name(slot, "Adapter AHA-1640"); | ||
| 1061 | mca_set_adapter_procfn(slot, NULL, NULL); | ||
| 1062 | mca_mark_as_used(slot); | ||
| 1063 | |||
| 1064 | /* Go on */ | ||
| 1065 | slot++; | ||
| 1066 | } | ||
| 1067 | |||
| 1068 | } | ||
| 1069 | #endif | ||
| 1070 | |||
| 1071 | /* | ||
| 1072 | * Hunt for ISA Plug'n'Pray Adaptecs (AHA1535) | 1010 | * Hunt for ISA Plug'n'Pray Adaptecs (AHA1535) |
| 1073 | */ | 1011 | */ |
| 1074 | 1012 | ||
diff --git a/drivers/scsi/fd_mcs.c b/drivers/scsi/fd_mcs.c deleted file mode 100644 index 53bfcaa86f09..000000000000 --- a/drivers/scsi/fd_mcs.c +++ /dev/null | |||
| @@ -1,1354 +0,0 @@ | |||
| 1 | /* fd_mcs.c -- Future Domain MCS 600/700 (or IBM OEM) driver | ||
| 2 | * | ||
| 3 | * FutureDomain MCS-600/700 v0.2 03/11/1998 by ZP Gu (zpg@castle.net) | ||
| 4 | * | ||
| 5 | * This driver is cloned from fdomain.* to specifically support | ||
| 6 | * the Future Domain MCS 600/700 MCA SCSI adapters. Some PS/2s | ||
| 7 | * also equipped with IBM Fast SCSI Adapter/A which is an OEM | ||
| 8 | * of MCS 700. | ||
| 9 | * | ||
| 10 | * This driver also supports Reply SB16/SCSI card (the SCSI part). | ||
| 11 | * | ||
| 12 | * What makes this driver different is that this driver is MCA only | ||
| 13 | * and it supports multiple adapters in the same system, IRQ | ||
| 14 | * sharing, some driver statistics, and maps highest SCSI id to sda. | ||
| 15 | * All cards are auto-detected. | ||
| 16 | * | ||
| 17 | * Assumptions: TMC-1800/18C50/18C30, BIOS >= 3.4 | ||
| 18 | * | ||
| 19 | * LILO command-line options: | ||
| 20 | * fd_mcs=<FIFO_COUNT>[,<FIFO_SIZE>] | ||
| 21 | * | ||
| 22 | * ******************************************************** | ||
| 23 | * Please see Copyrights/Comments in fdomain.* for credits. | ||
| 24 | * Following is from fdomain.c for acknowledgement: | ||
| 25 | * | ||
| 26 | * Created: Sun May 3 18:53:19 1992 by faith@cs.unc.edu | ||
| 27 | * Revised: Wed Oct 2 11:10:55 1996 by r.faith@ieee.org | ||
| 28 | * Author: Rickard E. Faith, faith@cs.unc.edu | ||
| 29 | * Copyright 1992, 1993, 1994, 1995, 1996 Rickard E. Faith | ||
| 30 | * | ||
| 31 | * $Id: fdomain.c,v 5.45 1996/10/02 15:13:06 root Exp $ | ||
| 32 | |||
| 33 | * This program is free software; you can redistribute it and/or modify it | ||
| 34 | * under the terms of the GNU General Public License as published by the | ||
| 35 | * Free Software Foundation; either version 2, or (at your option) any | ||
| 36 | * later version. | ||
| 37 | |||
| 38 | * This program is distributed in the hope that it will be useful, but | ||
| 39 | * WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 40 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
| 41 | * General Public License for more details. | ||
| 42 | |||
| 43 | * You should have received a copy of the GNU General Public License along | ||
| 44 | * with this program; if not, write to the Free Software Foundation, Inc., | ||
| 45 | * 675 Mass Ave, Cambridge, MA 02139, USA. | ||
| 46 | |||
| 47 | ************************************************************************** | ||
| 48 | |||
| 49 | NOTES ON USER DEFINABLE OPTIONS: | ||
| 50 | |||
| 51 | DEBUG: This turns on the printing of various debug information. | ||
| 52 | |||
| 53 | ENABLE_PARITY: This turns on SCSI parity checking. With the current | ||
| 54 | driver, all attached devices must support SCSI parity. If none of your | ||
| 55 | devices support parity, then you can probably get the driver to work by | ||
| 56 | turning this option off. I have no way of testing this, however, and it | ||
| 57 | would appear that no one ever uses this option. | ||
| 58 | |||
| 59 | FIFO_COUNT: The host adapter has an 8K cache (host adapters based on the | ||
| 60 | 18C30 chip have a 2k cache). When this many 512 byte blocks are filled by | ||
| 61 | the SCSI device, an interrupt will be raised. Therefore, this could be as | ||
| 62 | low as 0, or as high as 16. Note, however, that values which are too high | ||
| 63 | or too low seem to prevent any interrupts from occurring, and thereby lock | ||
| 64 | up the machine. I have found that 2 is a good number, but throughput may | ||
| 65 | be increased by changing this value to values which are close to 2. | ||
| 66 | Please let me know if you try any different values. | ||
| 67 | [*****Now a runtime option*****] | ||
| 68 | |||
| 69 | RESELECTION: This is no longer an option, since I gave up trying to | ||
| 70 | implement it in version 4.x of this driver. It did not improve | ||
| 71 | performance at all and made the driver unstable (because I never found one | ||
| 72 | of the two race conditions which were introduced by the multiple | ||
| 73 | outstanding command code). The instability seems a very high price to pay | ||
| 74 | just so that you don't have to wait for the tape to rewind. If you want | ||
| 75 | this feature implemented, send me patches. I'll be happy to send a copy | ||
| 76 | of my (broken) driver to anyone who would like to see a copy. | ||
| 77 | |||
| 78 | **************************************************************************/ | ||
| 79 | |||
| 80 | #include <linux/module.h> | ||
| 81 | #include <linux/init.h> | ||
| 82 | #include <linux/interrupt.h> | ||
| 83 | #include <linux/blkdev.h> | ||
| 84 | #include <linux/errno.h> | ||
| 85 | #include <linux/string.h> | ||
| 86 | #include <linux/ioport.h> | ||
| 87 | #include <linux/proc_fs.h> | ||
| 88 | #include <linux/delay.h> | ||
| 89 | #include <linux/mca.h> | ||
| 90 | #include <linux/spinlock.h> | ||
| 91 | #include <linux/slab.h> | ||
| 92 | #include <scsi/scsicam.h> | ||
| 93 | #include <linux/mca-legacy.h> | ||
| 94 | |||
| 95 | #include <asm/io.h> | ||
| 96 | |||
| 97 | #include "scsi.h" | ||
| 98 | #include <scsi/scsi_host.h> | ||
| 99 | |||
| 100 | #define DRIVER_VERSION "v0.2 by ZP Gu<zpg@castle.net>" | ||
| 101 | |||
| 102 | /* START OF USER DEFINABLE OPTIONS */ | ||
| 103 | |||
| 104 | #define DEBUG 0 /* Enable debugging output */ | ||
| 105 | #define ENABLE_PARITY 1 /* Enable SCSI Parity */ | ||
| 106 | |||
| 107 | /* END OF USER DEFINABLE OPTIONS */ | ||
| 108 | |||
| 109 | #if DEBUG | ||
| 110 | #define EVERY_ACCESS 0 /* Write a line on every scsi access */ | ||
| 111 | #define ERRORS_ONLY 1 /* Only write a line if there is an error */ | ||
| 112 | #define DEBUG_MESSAGES 1 /* Debug MESSAGE IN phase */ | ||
| 113 | #define DEBUG_ABORT 1 /* Debug abort() routine */ | ||
| 114 | #define DEBUG_RESET 1 /* Debug reset() routine */ | ||
| 115 | #define DEBUG_RACE 1 /* Debug interrupt-driven race condition */ | ||
| 116 | #else | ||
| 117 | #define EVERY_ACCESS 0 /* LEAVE THESE ALONE--CHANGE THE ONES ABOVE */ | ||
| 118 | #define ERRORS_ONLY 0 | ||
| 119 | #define DEBUG_MESSAGES 0 | ||
| 120 | #define DEBUG_ABORT 0 | ||
| 121 | #define DEBUG_RESET 0 | ||
| 122 | #define DEBUG_RACE 0 | ||
| 123 | #endif | ||
| 124 | |||
| 125 | /* Errors are reported on the line, so we don't need to report them again */ | ||
| 126 | #if EVERY_ACCESS | ||
| 127 | #undef ERRORS_ONLY | ||
| 128 | #define ERRORS_ONLY 0 | ||
| 129 | #endif | ||
| 130 | |||
| 131 | #if ENABLE_PARITY | ||
| 132 | #define PARITY_MASK 0x08 | ||
| 133 | #else | ||
| 134 | #define PARITY_MASK 0x00 | ||
| 135 | #endif | ||
| 136 | |||
| 137 | enum chip_type { | ||
| 138 | unknown = 0x00, | ||
| 139 | tmc1800 = 0x01, | ||
| 140 | tmc18c50 = 0x02, | ||
| 141 | tmc18c30 = 0x03, | ||
| 142 | }; | ||
| 143 | |||
| 144 | enum { | ||
| 145 | in_arbitration = 0x02, | ||
| 146 | in_selection = 0x04, | ||
| 147 | in_other = 0x08, | ||
| 148 | disconnect = 0x10, | ||
| 149 | aborted = 0x20, | ||
| 150 | sent_ident = 0x40, | ||
| 151 | }; | ||
| 152 | |||
| 153 | enum in_port_type { | ||
| 154 | Read_SCSI_Data = 0, | ||
| 155 | SCSI_Status = 1, | ||
| 156 | TMC_Status = 2, | ||
| 157 | FIFO_Status = 3, /* tmc18c50/tmc18c30 only */ | ||
| 158 | Interrupt_Cond = 4, /* tmc18c50/tmc18c30 only */ | ||
| 159 | LSB_ID_Code = 5, | ||
| 160 | MSB_ID_Code = 6, | ||
| 161 | Read_Loopback = 7, | ||
| 162 | SCSI_Data_NoACK = 8, | ||
| 163 | Interrupt_Status = 9, | ||
| 164 | Configuration1 = 10, | ||
| 165 | Configuration2 = 11, /* tmc18c50/tmc18c30 only */ | ||
| 166 | Read_FIFO = 12, | ||
| 167 | FIFO_Data_Count = 14 | ||
| 168 | }; | ||
| 169 | |||
| 170 | enum out_port_type { | ||
| 171 | Write_SCSI_Data = 0, | ||
| 172 | SCSI_Cntl = 1, | ||
| 173 | Interrupt_Cntl = 2, | ||
| 174 | SCSI_Mode_Cntl = 3, | ||
| 175 | TMC_Cntl = 4, | ||
| 176 | Memory_Cntl = 5, /* tmc18c50/tmc18c30 only */ | ||
| 177 | Write_Loopback = 7, | ||
| 178 | IO_Control = 11, /* tmc18c30 only */ | ||
| 179 | Write_FIFO = 12 | ||
| 180 | }; | ||
| 181 | |||
| 182 | struct fd_hostdata { | ||
| 183 | unsigned long _bios_base; | ||
| 184 | int _bios_major; | ||
| 185 | int _bios_minor; | ||
| 186 | volatile int _in_command; | ||
| 187 | Scsi_Cmnd *_current_SC; | ||
| 188 | enum chip_type _chip; | ||
| 189 | int _adapter_mask; | ||
| 190 | int _fifo_count; /* Number of 512 byte blocks before INTR */ | ||
| 191 | |||
| 192 | char _adapter_name[64]; | ||
| 193 | #if DEBUG_RACE | ||
| 194 | volatile int _in_interrupt_flag; | ||
| 195 | #endif | ||
| 196 | |||
| 197 | int _SCSI_Mode_Cntl_port; | ||
| 198 | int _FIFO_Data_Count_port; | ||
| 199 | int _Interrupt_Cntl_port; | ||
| 200 | int _Interrupt_Status_port; | ||
| 201 | int _Interrupt_Cond_port; | ||
| 202 | int _Read_FIFO_port; | ||
| 203 | int _Read_SCSI_Data_port; | ||
| 204 | int _SCSI_Cntl_port; | ||
| 205 | int _SCSI_Data_NoACK_port; | ||
| 206 | int _SCSI_Status_port; | ||
| 207 | int _TMC_Cntl_port; | ||
| 208 | int _TMC_Status_port; | ||
| 209 | int _Write_FIFO_port; | ||
| 210 | int _Write_SCSI_Data_port; | ||
| 211 | |||
| 212 | int _FIFO_Size; /* = 0x2000; 8k FIFO for | ||
| 213 | pre-tmc18c30 chips */ | ||
| 214 | /* simple stats */ | ||
| 215 | int _Bytes_Read; | ||
| 216 | int _Bytes_Written; | ||
| 217 | int _INTR_Processed; | ||
| 218 | }; | ||
| 219 | |||
| 220 | #define FD_MAX_HOSTS 3 /* enough? */ | ||
| 221 | |||
| 222 | #define HOSTDATA(shpnt) ((struct fd_hostdata *) shpnt->hostdata) | ||
| 223 | #define bios_base (HOSTDATA(shpnt)->_bios_base) | ||
| 224 | #define bios_major (HOSTDATA(shpnt)->_bios_major) | ||
| 225 | #define bios_minor (HOSTDATA(shpnt)->_bios_minor) | ||
| 226 | #define in_command (HOSTDATA(shpnt)->_in_command) | ||
| 227 | #define current_SC (HOSTDATA(shpnt)->_current_SC) | ||
| 228 | #define chip (HOSTDATA(shpnt)->_chip) | ||
| 229 | #define adapter_mask (HOSTDATA(shpnt)->_adapter_mask) | ||
| 230 | #define FIFO_COUNT (HOSTDATA(shpnt)->_fifo_count) | ||
| 231 | #define adapter_name (HOSTDATA(shpnt)->_adapter_name) | ||
| 232 | #if DEBUG_RACE | ||
| 233 | #define in_interrupt_flag (HOSTDATA(shpnt)->_in_interrupt_flag) | ||
| 234 | #endif | ||
| 235 | #define SCSI_Mode_Cntl_port (HOSTDATA(shpnt)->_SCSI_Mode_Cntl_port) | ||
| 236 | #define FIFO_Data_Count_port (HOSTDATA(shpnt)->_FIFO_Data_Count_port) | ||
| 237 | #define Interrupt_Cntl_port (HOSTDATA(shpnt)->_Interrupt_Cntl_port) | ||
| 238 | #define Interrupt_Status_port (HOSTDATA(shpnt)->_Interrupt_Status_port) | ||
| 239 | #define Interrupt_Cond_port (HOSTDATA(shpnt)->_Interrupt_Cond_port) | ||
| 240 | #define Read_FIFO_port (HOSTDATA(shpnt)->_Read_FIFO_port) | ||
| 241 | #define Read_SCSI_Data_port (HOSTDATA(shpnt)->_Read_SCSI_Data_port) | ||
| 242 | #define SCSI_Cntl_port (HOSTDATA(shpnt)->_SCSI_Cntl_port) | ||
| 243 | #define SCSI_Data_NoACK_port (HOSTDATA(shpnt)->_SCSI_Data_NoACK_port) | ||
| 244 | #define SCSI_Status_port (HOSTDATA(shpnt)->_SCSI_Status_port) | ||
| 245 | #define TMC_Cntl_port (HOSTDATA(shpnt)->_TMC_Cntl_port) | ||
| 246 | #define TMC_Status_port (HOSTDATA(shpnt)->_TMC_Status_port) | ||
| 247 | #define Write_FIFO_port (HOSTDATA(shpnt)->_Write_FIFO_port) | ||
| 248 | #define Write_SCSI_Data_port (HOSTDATA(shpnt)->_Write_SCSI_Data_port) | ||
| 249 | #define FIFO_Size (HOSTDATA(shpnt)->_FIFO_Size) | ||
| 250 | #define Bytes_Read (HOSTDATA(shpnt)->_Bytes_Read) | ||
| 251 | #define Bytes_Written (HOSTDATA(shpnt)->_Bytes_Written) | ||
| 252 | #define INTR_Processed (HOSTDATA(shpnt)->_INTR_Processed) | ||
| 253 | |||
| 254 | struct fd_mcs_adapters_struct { | ||
| 255 | char *name; | ||
| 256 | int id; | ||
| 257 | enum chip_type fd_chip; | ||
| 258 | int fifo_size; | ||
| 259 | int fifo_count; | ||
| 260 | }; | ||
| 261 | |||
| 262 | #define REPLY_ID 0x5137 | ||
| 263 | |||
| 264 | static struct fd_mcs_adapters_struct fd_mcs_adapters[] = { | ||
| 265 | {"Future Domain SCSI Adapter MCS-700(18C50)", | ||
| 266 | 0x60e9, | ||
| 267 | tmc18c50, | ||
| 268 | 0x2000, | ||
| 269 | 4}, | ||
| 270 | {"Future Domain SCSI Adapter MCS-600/700(TMC-1800)", | ||
| 271 | 0x6127, | ||
| 272 | tmc1800, | ||
| 273 | 0x2000, | ||
| 274 | 4}, | ||
| 275 | {"Reply Sound Blaster/SCSI Adapter", | ||
| 276 | REPLY_ID, | ||
| 277 | tmc18c30, | ||
| 278 | 0x800, | ||
| 279 | 2}, | ||
| 280 | }; | ||
| 281 | |||
| 282 | #define FD_BRDS ARRAY_SIZE(fd_mcs_adapters) | ||
| 283 | |||
| 284 | static irqreturn_t fd_mcs_intr(int irq, void *dev_id); | ||
| 285 | |||
| 286 | static unsigned long addresses[] = { 0xc8000, 0xca000, 0xce000, 0xde000 }; | ||
| 287 | static unsigned short ports[] = { 0x140, 0x150, 0x160, 0x170 }; | ||
| 288 | static unsigned short interrupts[] = { 3, 5, 10, 11, 12, 14, 15, 0 }; | ||
| 289 | |||
| 290 | /* host information */ | ||
| 291 | static int found = 0; | ||
| 292 | static struct Scsi_Host *hosts[FD_MAX_HOSTS + 1] = { NULL }; | ||
| 293 | |||
| 294 | static int user_fifo_count = 0; | ||
| 295 | static int user_fifo_size = 0; | ||
| 296 | |||
| 297 | #ifndef MODULE | ||
| 298 | static int __init fd_mcs_setup(char *str) | ||
| 299 | { | ||
| 300 | static int done_setup = 0; | ||
| 301 | int ints[3]; | ||
| 302 | |||
| 303 | get_options(str, 3, ints); | ||
| 304 | if (done_setup++ || ints[0] < 1 || ints[0] > 2 || ints[1] < 1 || ints[1] > 16) { | ||
| 305 | printk("fd_mcs: usage: fd_mcs=FIFO_COUNT, FIFO_SIZE\n"); | ||
| 306 | return 0; | ||
| 307 | } | ||
| 308 | |||
| 309 | user_fifo_count = ints[0] >= 1 ? ints[1] : 0; | ||
| 310 | user_fifo_size = ints[0] >= 2 ? ints[2] : 0; | ||
| 311 | return 1; | ||
| 312 | } | ||
| 313 | |||
| 314 | __setup("fd_mcs=", fd_mcs_setup); | ||
| 315 | #endif /* !MODULE */ | ||
| 316 | |||
| 317 | static void print_banner(struct Scsi_Host *shpnt) | ||
| 318 | { | ||
| 319 | printk("scsi%d <fd_mcs>: ", shpnt->host_no); | ||
| 320 | |||
| 321 | if (bios_base) { | ||
| 322 | printk("BIOS at 0x%lX", bios_base); | ||
| 323 | } else { | ||
| 324 | printk("No BIOS"); | ||
| 325 | } | ||
| 326 | |||
| 327 | printk(", HostID %d, %s Chip, IRQ %d, IO 0x%lX\n", shpnt->this_id, chip == tmc18c50 ? "TMC-18C50" : (chip == tmc18c30 ? "TMC-18C30" : (chip == tmc1800 ? "TMC-1800" : "Unknown")), shpnt->irq, shpnt->io_port); | ||
| 328 | } | ||
| 329 | |||
| 330 | |||
| 331 | static void do_pause(unsigned amount) | ||
| 332 | { /* Pause for amount*10 milliseconds */ | ||
| 333 | do { | ||
| 334 | mdelay(10); | ||
| 335 | } while (--amount); | ||
| 336 | } | ||
| 337 | |||
| 338 | static void fd_mcs_make_bus_idle(struct Scsi_Host *shpnt) | ||
| 339 | { | ||
| 340 | outb(0, SCSI_Cntl_port); | ||
| 341 | outb(0, SCSI_Mode_Cntl_port); | ||
| 342 | if (chip == tmc18c50 || chip == tmc18c30) | ||
| 343 | outb(0x21 | PARITY_MASK, TMC_Cntl_port); /* Clear forced intr. */ | ||
| 344 | else | ||
| 345 | outb(0x01 | PARITY_MASK, TMC_Cntl_port); | ||
| 346 | } | ||
| 347 | |||
| 348 | static int fd_mcs_detect(struct scsi_host_template * tpnt) | ||
| 349 | { | ||
| 350 | int loop; | ||
| 351 | struct Scsi_Host *shpnt; | ||
| 352 | |||
| 353 | /* get id, port, bios, irq */ | ||
| 354 | int slot; | ||
| 355 | u_char pos2, pos3, pos4; | ||
| 356 | int id, port, irq; | ||
| 357 | unsigned long bios; | ||
| 358 | |||
| 359 | /* if not MCA machine, return */ | ||
| 360 | if (!MCA_bus) | ||
| 361 | return 0; | ||
| 362 | |||
| 363 | /* changeable? */ | ||
| 364 | id = 7; | ||
| 365 | |||
| 366 | for (loop = 0; loop < FD_BRDS; loop++) { | ||
| 367 | slot = 0; | ||
| 368 | while (MCA_NOTFOUND != (slot = mca_find_adapter(fd_mcs_adapters[loop].id, slot))) { | ||
| 369 | |||
| 370 | /* if we get this far, an adapter has been detected and is | ||
| 371 | enabled */ | ||
| 372 | |||
| 373 | printk(KERN_INFO "scsi <fd_mcs>: %s at slot %d\n", fd_mcs_adapters[loop].name, slot + 1); | ||
| 374 | |||
| 375 | pos2 = mca_read_stored_pos(slot, 2); | ||
| 376 | pos3 = mca_read_stored_pos(slot, 3); | ||
| 377 | pos4 = mca_read_stored_pos(slot, 4); | ||
| 378 | |||
| 379 | /* ready for next probe */ | ||
| 380 | slot++; | ||
| 381 | |||
| 382 | if (fd_mcs_adapters[loop].id == REPLY_ID) { /* reply card */ | ||
| 383 | static int reply_irq[] = { 10, 11, 14, 15 }; | ||
| 384 | |||
| 385 | bios = 0; /* no bios */ | ||
| 386 | |||
| 387 | if (pos2 & 0x2) | ||
| 388 | port = ports[pos4 & 0x3]; | ||
| 389 | else | ||
| 390 | continue; | ||
| 391 | |||
| 392 | /* can't really disable it, same as irq=10 */ | ||
| 393 | irq = reply_irq[((pos4 >> 2) & 0x1) + 2 * ((pos4 >> 4) & 0x1)]; | ||
| 394 | } else { | ||
| 395 | bios = addresses[pos2 >> 6]; | ||
| 396 | port = ports[(pos2 >> 4) & 0x03]; | ||
| 397 | irq = interrupts[(pos2 >> 1) & 0x07]; | ||
| 398 | } | ||
| 399 | |||
| 400 | if (irq) { | ||
| 401 | /* claim the slot */ | ||
| 402 | mca_set_adapter_name(slot - 1, fd_mcs_adapters[loop].name); | ||
| 403 | |||
| 404 | /* check irq/region */ | ||
| 405 | if (request_irq(irq, fd_mcs_intr, IRQF_SHARED, "fd_mcs", hosts)) { | ||
| 406 | printk(KERN_ERR "fd_mcs: interrupt is not available, skipping...\n"); | ||
| 407 | continue; | ||
| 408 | } | ||
| 409 | |||
| 410 | /* request I/O region */ | ||
| 411 | if (request_region(port, 0x10, "fd_mcs")) { | ||
| 412 | printk(KERN_ERR "fd_mcs: I/O region is already in use, skipping...\n"); | ||
| 413 | continue; | ||
| 414 | } | ||
| 415 | /* register */ | ||
| 416 | if (!(shpnt = scsi_register(tpnt, sizeof(struct fd_hostdata)))) { | ||
| 417 | printk(KERN_ERR "fd_mcs: scsi_register() failed\n"); | ||
| 418 | release_region(port, 0x10); | ||
| 419 | free_irq(irq, hosts); | ||
| 420 | continue; | ||
| 421 | } | ||
| 422 | |||
| 423 | |||
| 424 | /* save name */ | ||
| 425 | strcpy(adapter_name, fd_mcs_adapters[loop].name); | ||
| 426 | |||
| 427 | /* chip/fifo */ | ||
| 428 | chip = fd_mcs_adapters[loop].fd_chip; | ||
| 429 | /* use boot time value if available */ | ||
| 430 | FIFO_COUNT = user_fifo_count ? user_fifo_count : fd_mcs_adapters[loop].fifo_count; | ||
| 431 | FIFO_Size = user_fifo_size ? user_fifo_size : fd_mcs_adapters[loop].fifo_size; | ||
| 432 | |||
| 433 | /* FIXME: Do we need to keep this bit of code inside NOT_USED around at all? */ | ||
| 434 | #ifdef NOT_USED | ||
| 435 | /* *************************************************** */ | ||
| 436 | /* Try to toggle 32-bit mode. This only | ||
| 437 | works on an 18c30 chip. (User reports | ||
| 438 | say this works, so we should switch to | ||
| 439 | it in the near future.) */ | ||
| 440 | outb(0x80, port + IO_Control); | ||
| 441 | if ((inb(port + Configuration2) & 0x80) == 0x80) { | ||
| 442 | outb(0x00, port + IO_Control); | ||
| 443 | if ((inb(port + Configuration2) & 0x80) == 0x00) { | ||
| 444 | chip = tmc18c30; | ||
| 445 | FIFO_Size = 0x800; /* 2k FIFO */ | ||
| 446 | |||
| 447 | printk("FIRST: chip=%s, fifo_size=0x%x\n", (chip == tmc18c30) ? "tmc18c30" : "tmc18c50", FIFO_Size); | ||
| 448 | } | ||
| 449 | } | ||
| 450 | |||
| 451 | /* That should have worked, but appears to | ||
| 452 | have problems. Let's assume it is an | ||
| 453 | 18c30 if the RAM is disabled. */ | ||
| 454 | |||
| 455 | if (inb(port + Configuration2) & 0x02) { | ||
| 456 | chip = tmc18c30; | ||
| 457 | FIFO_Size = 0x800; /* 2k FIFO */ | ||
| 458 | |||
| 459 | printk("SECOND: chip=%s, fifo_size=0x%x\n", (chip == tmc18c30) ? "tmc18c30" : "tmc18c50", FIFO_Size); | ||
| 460 | } | ||
| 461 | /* *************************************************** */ | ||
| 462 | #endif | ||
| 463 | |||
| 464 | /* IBM/ANSI scsi scan ordering */ | ||
| 465 | /* Stick this back in when the scsi.c changes are there */ | ||
| 466 | shpnt->reverse_ordering = 1; | ||
| 467 | |||
| 468 | |||
| 469 | /* saving info */ | ||
| 470 | hosts[found++] = shpnt; | ||
| 471 | |||
| 472 | shpnt->this_id = id; | ||
| 473 | shpnt->irq = irq; | ||
| 474 | shpnt->io_port = port; | ||
| 475 | shpnt->n_io_port = 0x10; | ||
| 476 | |||
| 477 | /* save */ | ||
| 478 | bios_base = bios; | ||
| 479 | adapter_mask = (1 << id); | ||
| 480 | |||
| 481 | /* save more */ | ||
| 482 | SCSI_Mode_Cntl_port = port + SCSI_Mode_Cntl; | ||
| 483 | FIFO_Data_Count_port = port + FIFO_Data_Count; | ||
| 484 | Interrupt_Cntl_port = port + Interrupt_Cntl; | ||
| 485 | Interrupt_Status_port = port + Interrupt_Status; | ||
| 486 | Interrupt_Cond_port = port + Interrupt_Cond; | ||
| 487 | Read_FIFO_port = port + Read_FIFO; | ||
| 488 | Read_SCSI_Data_port = port + Read_SCSI_Data; | ||
| 489 | SCSI_Cntl_port = port + SCSI_Cntl; | ||
| 490 | SCSI_Data_NoACK_port = port + SCSI_Data_NoACK; | ||
| 491 | SCSI_Status_port = port + SCSI_Status; | ||
| 492 | TMC_Cntl_port = port + TMC_Cntl; | ||
| 493 | TMC_Status_port = port + TMC_Status; | ||
| 494 | Write_FIFO_port = port + Write_FIFO; | ||
| 495 | Write_SCSI_Data_port = port + Write_SCSI_Data; | ||
| 496 | |||
| 497 | Bytes_Read = 0; | ||
| 498 | Bytes_Written = 0; | ||
| 499 | INTR_Processed = 0; | ||
| 500 | |||
| 501 | /* say something */ | ||
| 502 | print_banner(shpnt); | ||
| 503 | |||
| 504 | /* reset */ | ||
| 505 | outb(1, SCSI_Cntl_port); | ||
| 506 | do_pause(2); | ||
| 507 | outb(0, SCSI_Cntl_port); | ||
| 508 | do_pause(115); | ||
| 509 | outb(0, SCSI_Mode_Cntl_port); | ||
| 510 | outb(PARITY_MASK, TMC_Cntl_port); | ||
| 511 | /* done reset */ | ||
| 512 | } | ||
| 513 | } | ||
| 514 | |||
| 515 | if (found == FD_MAX_HOSTS) { | ||
| 516 | printk("fd_mcs: detecting reached max=%d host adapters.\n", FD_MAX_HOSTS); | ||
| 517 | break; | ||
| 518 | } | ||
| 519 | } | ||
| 520 | |||
| 521 | return found; | ||
| 522 | } | ||
| 523 | |||
| 524 | static const char *fd_mcs_info(struct Scsi_Host *shpnt) | ||
| 525 | { | ||
| 526 | return adapter_name; | ||
| 527 | } | ||
| 528 | |||
| 529 | static int TOTAL_INTR = 0; | ||
| 530 | |||
| 531 | /* | ||
| 532 | * inout : decides on the direction of the dataflow and the meaning of the | ||
| 533 | * variables | ||
| 534 | * buffer: If inout==FALSE data is being written to it else read from it | ||
| 535 | * *start: If inout==FALSE start of the valid data in the buffer | ||
| 536 | * offset: If inout==FALSE offset from the beginning of the imaginary file | ||
| 537 | * from which we start writing into the buffer | ||
| 538 | * length: If inout==FALSE max number of bytes to be written into the buffer | ||
| 539 | * else number of bytes in the buffer | ||
| 540 | */ | ||
| 541 | static int fd_mcs_proc_info(struct Scsi_Host *shpnt, char *buffer, char **start, off_t offset, int length, int inout) | ||
| 542 | { | ||
| 543 | int len = 0; | ||
| 544 | |||
| 545 | if (inout) | ||
| 546 | return (-ENOSYS); | ||
| 547 | |||
| 548 | *start = buffer + offset; | ||
| 549 | |||
| 550 | len += sprintf(buffer + len, "Future Domain MCS-600/700 Driver %s\n", DRIVER_VERSION); | ||
| 551 | len += sprintf(buffer + len, "HOST #%d: %s\n", shpnt->host_no, adapter_name); | ||
| 552 | len += sprintf(buffer + len, "FIFO Size=0x%x, FIFO Count=%d\n", FIFO_Size, FIFO_COUNT); | ||
| 553 | len += sprintf(buffer + len, "DriverCalls=%d, Interrupts=%d, BytesRead=%d, BytesWrite=%d\n\n", TOTAL_INTR, INTR_Processed, Bytes_Read, Bytes_Written); | ||
| 554 | |||
| 555 | if ((len -= offset) <= 0) | ||
| 556 | return 0; | ||
| 557 | if (len > length) | ||
| 558 | len = length; | ||
| 559 | return len; | ||
| 560 | } | ||
| 561 | |||
| 562 | static int fd_mcs_select(struct Scsi_Host *shpnt, int target) | ||
| 563 | { | ||
| 564 | int status; | ||
| 565 | unsigned long timeout; | ||
| 566 | |||
| 567 | outb(0x82, SCSI_Cntl_port); /* Bus Enable + Select */ | ||
| 568 | outb(adapter_mask | (1 << target), SCSI_Data_NoACK_port); | ||
| 569 | |||
| 570 | /* Stop arbitration and enable parity */ | ||
| 571 | outb(PARITY_MASK, TMC_Cntl_port); | ||
| 572 | |||
| 573 | timeout = 350; /* 350mS -- because of timeouts | ||
| 574 | (was 250mS) */ | ||
| 575 | |||
| 576 | do { | ||
| 577 | status = inb(SCSI_Status_port); /* Read adapter status */ | ||
| 578 | if (status & 1) { /* Busy asserted */ | ||
| 579 | /* Enable SCSI Bus (on error, should make bus idle with 0) */ | ||
| 580 | outb(0x80, SCSI_Cntl_port); | ||
| 581 | return 0; | ||
| 582 | } | ||
| 583 | udelay(1000); /* wait one msec */ | ||
| 584 | } while (--timeout); | ||
| 585 | |||
| 586 | /* Make bus idle */ | ||
| 587 | fd_mcs_make_bus_idle(shpnt); | ||
| 588 | #if EVERY_ACCESS | ||
| 589 | if (!target) | ||
| 590 | printk("Selection failed\n"); | ||
| 591 | #endif | ||
| 592 | #if ERRORS_ONLY | ||
| 593 | if (!target) { | ||
| 594 | static int flag = 0; | ||
| 595 | |||
| 596 | if (!flag) /* Skip first failure for all chips. */ | ||
| 597 | ++flag; | ||
| 598 | else | ||
| 599 | printk("fd_mcs: Selection failed\n"); | ||
| 600 | } | ||
| 601 | #endif | ||
| 602 | return 1; | ||
| 603 | } | ||
| 604 | |||
| 605 | static void my_done(struct Scsi_Host *shpnt, int error) | ||
| 606 | { | ||
| 607 | if (in_command) { | ||
| 608 | in_command = 0; | ||
| 609 | outb(0x00, Interrupt_Cntl_port); | ||
| 610 | fd_mcs_make_bus_idle(shpnt); | ||
| 611 | current_SC->result = error; | ||
| 612 | current_SC->scsi_done(current_SC); | ||
| 613 | } else { | ||
| 614 | panic("fd_mcs: my_done() called outside of command\n"); | ||
| 615 | } | ||
| 616 | #if DEBUG_RACE | ||
| 617 | in_interrupt_flag = 0; | ||
| 618 | #endif | ||
| 619 | } | ||
| 620 | |||
| 621 | /* only my_done needs to be protected */ | ||
| 622 | static irqreturn_t fd_mcs_intr(int irq, void *dev_id) | ||
| 623 | { | ||
| 624 | unsigned long flags; | ||
| 625 | int status; | ||
| 626 | int done = 0; | ||
| 627 | unsigned data_count, tmp_count; | ||
| 628 | |||
| 629 | int i = 0; | ||
| 630 | struct Scsi_Host *shpnt; | ||
| 631 | |||
| 632 | TOTAL_INTR++; | ||
| 633 | |||
| 634 | /* search for one adapter-response on shared interrupt */ | ||
| 635 | while ((shpnt = hosts[i++])) { | ||
| 636 | if ((inb(TMC_Status_port)) & 1) | ||
| 637 | break; | ||
| 638 | } | ||
| 639 | |||
| 640 | /* return if some other device on this IRQ caused the interrupt */ | ||
| 641 | if (!shpnt) { | ||
| 642 | return IRQ_NONE; | ||
| 643 | } | ||
| 644 | |||
| 645 | INTR_Processed++; | ||
| 646 | |||
| 647 | outb(0x00, Interrupt_Cntl_port); | ||
| 648 | |||
| 649 | /* Abort calls my_done, so we do nothing here. */ | ||
| 650 | if (current_SC->SCp.phase & aborted) { | ||
| 651 | #if DEBUG_ABORT | ||
| 652 | printk("Interrupt after abort, ignoring\n"); | ||
| 653 | #endif | ||
| 654 | /* return IRQ_HANDLED; */ | ||
| 655 | } | ||
| 656 | #if DEBUG_RACE | ||
| 657 | ++in_interrupt_flag; | ||
| 658 | #endif | ||
| 659 | |||
| 660 | if (current_SC->SCp.phase & in_arbitration) { | ||
| 661 | status = inb(TMC_Status_port); /* Read adapter status */ | ||
| 662 | if (!(status & 0x02)) { | ||
| 663 | #if EVERY_ACCESS | ||
| 664 | printk(" AFAIL "); | ||
| 665 | #endif | ||
| 666 | spin_lock_irqsave(shpnt->host_lock, flags); | ||
| 667 | my_done(shpnt, DID_BUS_BUSY << 16); | ||
| 668 | spin_unlock_irqrestore(shpnt->host_lock, flags); | ||
| 669 | return IRQ_HANDLED; | ||
| 670 | } | ||
| 671 | current_SC->SCp.phase = in_selection; | ||
| 672 | |||
| 673 | outb(0x40 | FIFO_COUNT, Interrupt_Cntl_port); | ||
| 674 | |||
| 675 | outb(0x82, SCSI_Cntl_port); /* Bus Enable + Select */ | ||
| 676 | outb(adapter_mask | (1 << scmd_id(current_SC)), SCSI_Data_NoACK_port); | ||
| 677 | |||
| 678 | /* Stop arbitration and enable parity */ | ||
| 679 | outb(0x10 | PARITY_MASK, TMC_Cntl_port); | ||
| 680 | #if DEBUG_RACE | ||
| 681 | in_interrupt_flag = 0; | ||
| 682 | #endif | ||
| 683 | return IRQ_HANDLED; | ||
| 684 | } else if (current_SC->SCp.phase & in_selection) { | ||
| 685 | status = inb(SCSI_Status_port); | ||
| 686 | if (!(status & 0x01)) { | ||
| 687 | /* Try again, for slow devices */ | ||
| 688 | if (fd_mcs_select(shpnt, scmd_id(current_SC))) { | ||
| 689 | #if EVERY_ACCESS | ||
| 690 | printk(" SFAIL "); | ||
| 691 | #endif | ||
| 692 | spin_lock_irqsave(shpnt->host_lock, flags); | ||
| 693 | my_done(shpnt, DID_NO_CONNECT << 16); | ||
| 694 | spin_unlock_irqrestore(shpnt->host_lock, flags); | ||
| 695 | return IRQ_HANDLED; | ||
| 696 | } else { | ||
| 697 | #if EVERY_ACCESS | ||
| 698 | printk(" AltSel "); | ||
| 699 | #endif | ||
| 700 | /* Stop arbitration and enable parity */ | ||
| 701 | outb(0x10 | PARITY_MASK, TMC_Cntl_port); | ||
| 702 | } | ||
| 703 | } | ||
| 704 | current_SC->SCp.phase = in_other; | ||
| 705 | outb(0x90 | FIFO_COUNT, Interrupt_Cntl_port); | ||
| 706 | outb(0x80, SCSI_Cntl_port); | ||
| 707 | #if DEBUG_RACE | ||
| 708 | in_interrupt_flag = 0; | ||
| 709 | #endif | ||
| 710 | return IRQ_HANDLED; | ||
| 711 | } | ||
| 712 | |||
| 713 | /* current_SC->SCp.phase == in_other: this is the body of the routine */ | ||
| 714 | |||
| 715 | status = inb(SCSI_Status_port); | ||
| 716 | |||
| 717 | if (status & 0x10) { /* REQ */ | ||
| 718 | |||
| 719 | switch (status & 0x0e) { | ||
| 720 | |||
| 721 | case 0x08: /* COMMAND OUT */ | ||
| 722 | outb(current_SC->cmnd[current_SC->SCp.sent_command++], Write_SCSI_Data_port); | ||
| 723 | #if EVERY_ACCESS | ||
| 724 | printk("CMD = %x,", current_SC->cmnd[current_SC->SCp.sent_command - 1]); | ||
| 725 | #endif | ||
| 726 | break; | ||
| 727 | case 0x00: /* DATA OUT -- tmc18c50/tmc18c30 only */ | ||
| 728 | if (chip != tmc1800 && !current_SC->SCp.have_data_in) { | ||
| 729 | current_SC->SCp.have_data_in = -1; | ||
| 730 | outb(0xd0 | PARITY_MASK, TMC_Cntl_port); | ||
| 731 | } | ||
| 732 | break; | ||
| 733 | case 0x04: /* DATA IN -- tmc18c50/tmc18c30 only */ | ||
| 734 | if (chip != tmc1800 && !current_SC->SCp.have_data_in) { | ||
| 735 | current_SC->SCp.have_data_in = 1; | ||
| 736 | outb(0x90 | PARITY_MASK, TMC_Cntl_port); | ||
| 737 | } | ||
| 738 | break; | ||
| 739 | case 0x0c: /* STATUS IN */ | ||
| 740 | current_SC->SCp.Status = inb(Read_SCSI_Data_port); | ||
| 741 | #if EVERY_ACCESS | ||
| 742 | printk("Status = %x, ", current_SC->SCp.Status); | ||
| 743 | #endif | ||
| 744 | #if ERRORS_ONLY | ||
| 745 | if (current_SC->SCp.Status && current_SC->SCp.Status != 2 && current_SC->SCp.Status != 8) { | ||
| 746 | printk("ERROR fd_mcs: target = %d, command = %x, status = %x\n", current_SC->device->id, current_SC->cmnd[0], current_SC->SCp.Status); | ||
| 747 | } | ||
| 748 | #endif | ||
| 749 | break; | ||
| 750 | case 0x0a: /* MESSAGE OUT */ | ||
| 751 | outb(MESSAGE_REJECT, Write_SCSI_Data_port); /* Reject */ | ||
| 752 | break; | ||
| 753 | case 0x0e: /* MESSAGE IN */ | ||
| 754 | current_SC->SCp.Message = inb(Read_SCSI_Data_port); | ||
| 755 | #if EVERY_ACCESS | ||
| 756 | printk("Message = %x, ", current_SC->SCp.Message); | ||
| 757 | #endif | ||
| 758 | if (!current_SC->SCp.Message) | ||
| 759 | ++done; | ||
| 760 | #if DEBUG_MESSAGES || EVERY_ACCESS | ||
| 761 | if (current_SC->SCp.Message) { | ||
| 762 | printk("fd_mcs: message = %x\n", current_SC->SCp.Message); | ||
| 763 | } | ||
| 764 | #endif | ||
| 765 | break; | ||
| 766 | } | ||
| 767 | } | ||
| 768 | |||
| 769 | if (chip == tmc1800 && !current_SC->SCp.have_data_in && (current_SC->SCp.sent_command >= current_SC->cmd_len)) { | ||
| 770 | /* We have to get the FIFO direction | ||
| 771 | correct, so I've made a table based | ||
| 772 | on the SCSI Standard of which commands | ||
| 773 | appear to require a DATA OUT phase. | ||
| 774 | */ | ||
| 775 | /* | ||
| 776 | p. 94: Command for all device types | ||
| 777 | CHANGE DEFINITION 40 DATA OUT | ||
| 778 | COMPARE 39 DATA OUT | ||
| 779 | COPY 18 DATA OUT | ||
| 780 | COPY AND VERIFY 3a DATA OUT | ||
| 781 | INQUIRY 12 | ||
| 782 | LOG SELECT 4c DATA OUT | ||
| 783 | LOG SENSE 4d | ||
| 784 | MODE SELECT (6) 15 DATA OUT | ||
| 785 | MODE SELECT (10) 55 DATA OUT | ||
| 786 | MODE SENSE (6) 1a | ||
| 787 | MODE SENSE (10) 5a | ||
| 788 | READ BUFFER 3c | ||
| 789 | RECEIVE DIAGNOSTIC RESULTS 1c | ||
| 790 | REQUEST SENSE 03 | ||
| 791 | SEND DIAGNOSTIC 1d DATA OUT | ||
| 792 | TEST UNIT READY 00 | ||
| 793 | WRITE BUFFER 3b DATA OUT | ||
| 794 | |||
| 795 | p.178: Commands for direct-access devices (not listed on p. 94) | ||
| 796 | FORMAT UNIT 04 DATA OUT | ||
| 797 | LOCK-UNLOCK CACHE 36 | ||
| 798 | PRE-FETCH 34 | ||
| 799 | PREVENT-ALLOW MEDIUM REMOVAL 1e | ||
| 800 | READ (6)/RECEIVE 08 | ||
| 801 | READ (10) 3c | ||
| 802 | READ CAPACITY 25 | ||
| 803 | READ DEFECT DATA (10) 37 | ||
| 804 | READ LONG 3e | ||
| 805 | REASSIGN BLOCKS 07 DATA OUT | ||
| 806 | RELEASE 17 | ||
| 807 | RESERVE 16 DATA OUT | ||
| 808 | REZERO UNIT/REWIND 01 | ||
| 809 | SEARCH DATA EQUAL (10) 31 DATA OUT | ||
| 810 | SEARCH DATA HIGH (10) 30 DATA OUT | ||
| 811 | SEARCH DATA LOW (10) 32 DATA OUT | ||
| 812 | SEEK (6) 0b | ||
| 813 | SEEK (10) 2b | ||
| 814 | SET LIMITS (10) 33 | ||
| 815 | START STOP UNIT 1b | ||
| 816 | SYNCHRONIZE CACHE 35 | ||
| 817 | VERIFY (10) 2f | ||
| 818 | WRITE (6)/PRINT/SEND 0a DATA OUT | ||
| 819 | WRITE (10)/SEND 2a DATA OUT | ||
| 820 | WRITE AND VERIFY (10) 2e DATA OUT | ||
| 821 | WRITE LONG 3f DATA OUT | ||
| 822 | WRITE SAME 41 DATA OUT ? | ||
| 823 | |||
| 824 | p. 261: Commands for sequential-access devices (not previously listed) | ||
| 825 | ERASE 19 | ||
| 826 | LOAD UNLOAD 1b | ||
| 827 | LOCATE 2b | ||
| 828 | READ BLOCK LIMITS 05 | ||
| 829 | READ POSITION 34 | ||
| 830 | READ REVERSE 0f | ||
| 831 | RECOVER BUFFERED DATA 14 | ||
| 832 | SPACE 11 | ||
| 833 | WRITE FILEMARKS 10 ? | ||
| 834 | |||
| 835 | p. 298: Commands for printer devices (not previously listed) | ||
| 836 | ****** NOT SUPPORTED BY THIS DRIVER, since 0b is SEEK (6) ***** | ||
| 837 | SLEW AND PRINT 0b DATA OUT -- same as seek | ||
| 838 | STOP PRINT 1b | ||
| 839 | SYNCHRONIZE BUFFER 10 | ||
| 840 | |||
| 841 | p. 315: Commands for processor devices (not previously listed) | ||
| 842 | |||
| 843 | p. 321: Commands for write-once devices (not previously listed) | ||
| 844 | MEDIUM SCAN 38 | ||
| 845 | READ (12) a8 | ||
| 846 | SEARCH DATA EQUAL (12) b1 DATA OUT | ||
| 847 | SEARCH DATA HIGH (12) b0 DATA OUT | ||
| 848 | SEARCH DATA LOW (12) b2 DATA OUT | ||
| 849 | SET LIMITS (12) b3 | ||
| 850 | VERIFY (12) af | ||
| 851 | WRITE (12) aa DATA OUT | ||
| 852 | WRITE AND VERIFY (12) ae DATA OUT | ||
| 853 | |||
| 854 | p. 332: Commands for CD-ROM devices (not previously listed) | ||
| 855 | PAUSE/RESUME 4b | ||
| 856 | PLAY AUDIO (10) 45 | ||
| 857 | PLAY AUDIO (12) a5 | ||
| 858 | PLAY AUDIO MSF 47 | ||
| 859 | PLAY TRACK RELATIVE (10) 49 | ||
| 860 | PLAY TRACK RELATIVE (12) a9 | ||
| 861 | READ HEADER 44 | ||
| 862 | READ SUB-CHANNEL 42 | ||
| 863 | READ TOC 43 | ||
| 864 | |||
| 865 | p. 370: Commands for scanner devices (not previously listed) | ||
| 866 | GET DATA BUFFER STATUS 34 | ||
| 867 | GET WINDOW 25 | ||
| 868 | OBJECT POSITION 31 | ||
| 869 | SCAN 1b | ||
| 870 | SET WINDOW 24 DATA OUT | ||
| 871 | |||
| 872 | p. 391: Commands for optical memory devices (not listed) | ||
| 873 | ERASE (10) 2c | ||
| 874 | ERASE (12) ac | ||
| 875 | MEDIUM SCAN 38 DATA OUT | ||
| 876 | READ DEFECT DATA (12) b7 | ||
| 877 | READ GENERATION 29 | ||
| 878 | READ UPDATED BLOCK 2d | ||
| 879 | UPDATE BLOCK 3d DATA OUT | ||
| 880 | |||
| 881 | p. 419: Commands for medium changer devices (not listed) | ||
| 882 | EXCHANGE MEDIUM 46 | ||
| 883 | INITIALIZE ELEMENT STATUS 07 | ||
| 884 | MOVE MEDIUM a5 | ||
| 885 | POSITION TO ELEMENT 2b | ||
| 886 | READ ELEMENT STATUS b8 | ||
| 887 | REQUEST VOL. ELEMENT ADDRESS b5 | ||
| 888 | SEND VOLUME TAG b6 DATA OUT | ||
| 889 | |||
| 890 | p. 454: Commands for communications devices (not listed previously) | ||
| 891 | GET MESSAGE (6) 08 | ||
| 892 | GET MESSAGE (10) 28 | ||
| 893 | GET MESSAGE (12) a8 | ||
| 894 | */ | ||
| 895 | |||
| 896 | switch (current_SC->cmnd[0]) { | ||
| 897 | case CHANGE_DEFINITION: | ||
| 898 | case COMPARE: | ||
| 899 | case COPY: | ||
| 900 | case COPY_VERIFY: | ||
| 901 | case LOG_SELECT: | ||
| 902 | case MODE_SELECT: | ||
| 903 | case MODE_SELECT_10: | ||
| 904 | case SEND_DIAGNOSTIC: | ||
| 905 | case WRITE_BUFFER: | ||
| 906 | |||
| 907 | case FORMAT_UNIT: | ||
| 908 | case REASSIGN_BLOCKS: | ||
| 909 | case RESERVE: | ||
| 910 | case SEARCH_EQUAL: | ||
| 911 | case SEARCH_HIGH: | ||
| 912 | case SEARCH_LOW: | ||
| 913 | case WRITE_6: | ||
| 914 | case WRITE_10: | ||
| 915 | case WRITE_VERIFY: | ||
| 916 | case 0x3f: | ||
| 917 | case 0x41: | ||
| 918 | |||
| 919 | case 0xb1: | ||
| 920 | case 0xb0: | ||
| 921 | case 0xb2: | ||
| 922 | case 0xaa: | ||
| 923 | case 0xae: | ||
| 924 | |||
| 925 | case 0x24: | ||
| 926 | |||
| 927 | case 0x38: | ||
| 928 | case 0x3d: | ||
| 929 | |||
| 930 | case 0xb6: | ||
| 931 | |||
| 932 | case 0xea: /* alternate number for WRITE LONG */ | ||
| 933 | |||
| 934 | current_SC->SCp.have_data_in = -1; | ||
| 935 | outb(0xd0 | PARITY_MASK, TMC_Cntl_port); | ||
| 936 | break; | ||
| 937 | |||
| 938 | case 0x00: | ||
| 939 | default: | ||
| 940 | |||
| 941 | current_SC->SCp.have_data_in = 1; | ||
| 942 | outb(0x90 | PARITY_MASK, TMC_Cntl_port); | ||
| 943 | break; | ||
| 944 | } | ||
| 945 | } | ||
| 946 | |||
| 947 | if (current_SC->SCp.have_data_in == -1) { /* DATA OUT */ | ||
| 948 | while ((data_count = FIFO_Size - inw(FIFO_Data_Count_port)) > 512) { | ||
| 949 | #if EVERY_ACCESS | ||
| 950 | printk("DC=%d, ", data_count); | ||
| 951 | #endif | ||
| 952 | if (data_count > current_SC->SCp.this_residual) | ||
| 953 | data_count = current_SC->SCp.this_residual; | ||
| 954 | if (data_count > 0) { | ||
| 955 | #if EVERY_ACCESS | ||
| 956 | printk("%d OUT, ", data_count); | ||
| 957 | #endif | ||
| 958 | if (data_count == 1) { | ||
| 959 | Bytes_Written++; | ||
| 960 | |||
| 961 | outb(*current_SC->SCp.ptr++, Write_FIFO_port); | ||
| 962 | --current_SC->SCp.this_residual; | ||
| 963 | } else { | ||
| 964 | data_count >>= 1; | ||
| 965 | tmp_count = data_count << 1; | ||
| 966 | outsw(Write_FIFO_port, current_SC->SCp.ptr, data_count); | ||
| 967 | current_SC->SCp.ptr += tmp_count; | ||
| 968 | Bytes_Written += tmp_count; | ||
| 969 | current_SC->SCp.this_residual -= tmp_count; | ||
| 970 | } | ||
| 971 | } | ||
| 972 | if (!current_SC->SCp.this_residual) { | ||
| 973 | if (current_SC->SCp.buffers_residual) { | ||
| 974 | --current_SC->SCp.buffers_residual; | ||
| 975 | ++current_SC->SCp.buffer; | ||
| 976 | current_SC->SCp.ptr = sg_virt(current_SC->SCp.buffer); | ||
| 977 | current_SC->SCp.this_residual = current_SC->SCp.buffer->length; | ||
| 978 | } else | ||
| 979 | break; | ||
| 980 | } | ||
| 981 | } | ||
| 982 | } else if (current_SC->SCp.have_data_in == 1) { /* DATA IN */ | ||
| 983 | while ((data_count = inw(FIFO_Data_Count_port)) > 0) { | ||
| 984 | #if EVERY_ACCESS | ||
| 985 | printk("DC=%d, ", data_count); | ||
| 986 | #endif | ||
| 987 | if (data_count > current_SC->SCp.this_residual) | ||
| 988 | data_count = current_SC->SCp.this_residual; | ||
| 989 | if (data_count) { | ||
| 990 | #if EVERY_ACCESS | ||
| 991 | printk("%d IN, ", data_count); | ||
| 992 | #endif | ||
| 993 | if (data_count == 1) { | ||
| 994 | Bytes_Read++; | ||
| 995 | *current_SC->SCp.ptr++ = inb(Read_FIFO_port); | ||
| 996 | --current_SC->SCp.this_residual; | ||
| 997 | } else { | ||
| 998 | data_count >>= 1; /* Number of words */ | ||
| 999 | tmp_count = data_count << 1; | ||
| 1000 | insw(Read_FIFO_port, current_SC->SCp.ptr, data_count); | ||
| 1001 | current_SC->SCp.ptr += tmp_count; | ||
| 1002 | Bytes_Read += tmp_count; | ||
| 1003 | current_SC->SCp.this_residual -= tmp_count; | ||
| 1004 | } | ||
| 1005 | } | ||
| 1006 | if (!current_SC->SCp.this_residual && current_SC->SCp.buffers_residual) { | ||
| 1007 | --current_SC->SCp.buffers_residual; | ||
| 1008 | ++current_SC->SCp.buffer; | ||
| 1009 | current_SC->SCp.ptr = sg_virt(current_SC->SCp.buffer); | ||
| 1010 | current_SC->SCp.this_residual = current_SC->SCp.buffer->length; | ||
| 1011 | } | ||
| 1012 | } | ||
| 1013 | } | ||
| 1014 | |||
| 1015 | if (done) { | ||
| 1016 | #if EVERY_ACCESS | ||
| 1017 | printk(" ** IN DONE %d ** ", current_SC->SCp.have_data_in); | ||
| 1018 | #endif | ||
| 1019 | |||
| 1020 | #if EVERY_ACCESS | ||
| 1021 | printk("BEFORE MY_DONE. . ."); | ||
| 1022 | #endif | ||
| 1023 | spin_lock_irqsave(shpnt->host_lock, flags); | ||
| 1024 | my_done(shpnt, (current_SC->SCp.Status & 0xff) | ||
| 1025 | | ((current_SC->SCp.Message & 0xff) << 8) | (DID_OK << 16)); | ||
| 1026 | spin_unlock_irqrestore(shpnt->host_lock, flags); | ||
| 1027 | #if EVERY_ACCESS | ||
| 1028 | printk("RETURNING.\n"); | ||
| 1029 | #endif | ||
| 1030 | |||
| 1031 | } else { | ||
| 1032 | if (current_SC->SCp.phase & disconnect) { | ||
| 1033 | outb(0xd0 | FIFO_COUNT, Interrupt_Cntl_port); | ||
| 1034 | outb(0x00, SCSI_Cntl_port); | ||
| 1035 | } else { | ||
| 1036 | outb(0x90 | FIFO_COUNT, Interrupt_Cntl_port); | ||
| 1037 | } | ||
| 1038 | } | ||
| 1039 | #if DEBUG_RACE | ||
| 1040 | in_interrupt_flag = 0; | ||
| 1041 | #endif | ||
| 1042 | return IRQ_HANDLED; | ||
| 1043 | } | ||
| 1044 | |||
| 1045 | static int fd_mcs_release(struct Scsi_Host *shpnt) | ||
| 1046 | { | ||
| 1047 | int i, this_host, irq_usage; | ||
| 1048 | |||
| 1049 | release_region(shpnt->io_port, shpnt->n_io_port); | ||
| 1050 | |||
| 1051 | this_host = -1; | ||
| 1052 | irq_usage = 0; | ||
| 1053 | for (i = 0; i < found; i++) { | ||
| 1054 | if (shpnt == hosts[i]) | ||
| 1055 | this_host = i; | ||
| 1056 | if (shpnt->irq == hosts[i]->irq) | ||
| 1057 | irq_usage++; | ||
| 1058 | } | ||
| 1059 | |||
| 1060 | /* only for the last one */ | ||
| 1061 | if (1 == irq_usage) | ||
| 1062 | free_irq(shpnt->irq, hosts); | ||
| 1063 | |||
| 1064 | found--; | ||
| 1065 | |||
| 1066 | for (i = this_host; i < found; i++) | ||
| 1067 | hosts[i] = hosts[i + 1]; | ||
| 1068 | |||
| 1069 | hosts[found] = NULL; | ||
| 1070 | |||
| 1071 | return 0; | ||
| 1072 | } | ||
| 1073 | |||
| 1074 | static int fd_mcs_queue_lck(Scsi_Cmnd * SCpnt, void (*done) (Scsi_Cmnd *)) | ||
| 1075 | { | ||
| 1076 | struct Scsi_Host *shpnt = SCpnt->device->host; | ||
| 1077 | |||
| 1078 | if (in_command) { | ||
| 1079 | panic("fd_mcs: fd_mcs_queue() NOT REENTRANT!\n"); | ||
| 1080 | } | ||
| 1081 | #if EVERY_ACCESS | ||
| 1082 | printk("queue: target = %d cmnd = 0x%02x pieces = %d size = %u\n", | ||
| 1083 | SCpnt->target, *(unsigned char *) SCpnt->cmnd, | ||
| 1084 | scsi_sg_count(SCpnt), scsi_bufflen(SCpnt)); | ||
| 1085 | #endif | ||
| 1086 | |||
| 1087 | fd_mcs_make_bus_idle(shpnt); | ||
| 1088 | |||
| 1089 | SCpnt->scsi_done = done; /* Save this for the done function */ | ||
| 1090 | current_SC = SCpnt; | ||
| 1091 | |||
| 1092 | /* Initialize static data */ | ||
| 1093 | |||
| 1094 | if (scsi_bufflen(current_SC)) { | ||
| 1095 | current_SC->SCp.buffer = scsi_sglist(current_SC); | ||
| 1096 | current_SC->SCp.ptr = sg_virt(current_SC->SCp.buffer); | ||
| 1097 | current_SC->SCp.this_residual = current_SC->SCp.buffer->length; | ||
| 1098 | current_SC->SCp.buffers_residual = scsi_sg_count(current_SC) - 1; | ||
| 1099 | } else { | ||
| 1100 | current_SC->SCp.ptr = NULL; | ||
| 1101 | current_SC->SCp.this_residual = 0; | ||
| 1102 | current_SC->SCp.buffer = NULL; | ||
| 1103 | current_SC->SCp.buffers_residual = 0; | ||
| 1104 | } | ||
| 1105 | |||
| 1106 | |||
| 1107 | current_SC->SCp.Status = 0; | ||
| 1108 | current_SC->SCp.Message = 0; | ||
| 1109 | current_SC->SCp.have_data_in = 0; | ||
| 1110 | current_SC->SCp.sent_command = 0; | ||
| 1111 | current_SC->SCp.phase = in_arbitration; | ||
| 1112 | |||
| 1113 | /* Start arbitration */ | ||
| 1114 | outb(0x00, Interrupt_Cntl_port); | ||
| 1115 | outb(0x00, SCSI_Cntl_port); /* Disable data drivers */ | ||
| 1116 | outb(adapter_mask, SCSI_Data_NoACK_port); /* Set our id bit */ | ||
| 1117 | in_command = 1; | ||
| 1118 | outb(0x20, Interrupt_Cntl_port); | ||
| 1119 | outb(0x14 | PARITY_MASK, TMC_Cntl_port); /* Start arbitration */ | ||
| 1120 | |||
| 1121 | return 0; | ||
| 1122 | } | ||
| 1123 | |||
| 1124 | static DEF_SCSI_QCMD(fd_mcs_queue) | ||
| 1125 | |||
| 1126 | #if DEBUG_ABORT || DEBUG_RESET | ||
| 1127 | static void fd_mcs_print_info(Scsi_Cmnd * SCpnt) | ||
| 1128 | { | ||
| 1129 | unsigned int imr; | ||
| 1130 | unsigned int irr; | ||
| 1131 | unsigned int isr; | ||
| 1132 | struct Scsi_Host *shpnt = SCpnt->host; | ||
| 1133 | |||
| 1134 | if (!SCpnt || !SCpnt->host) { | ||
| 1135 | printk("fd_mcs: cannot provide detailed information\n"); | ||
| 1136 | } | ||
| 1137 | |||
| 1138 | printk("%s\n", fd_mcs_info(SCpnt->host)); | ||
| 1139 | print_banner(SCpnt->host); | ||
| 1140 | switch (SCpnt->SCp.phase) { | ||
| 1141 | case in_arbitration: | ||
| 1142 | printk("arbitration "); | ||
| 1143 | break; | ||
| 1144 | case in_selection: | ||
| 1145 | printk("selection "); | ||
| 1146 | break; | ||
| 1147 | case in_other: | ||
| 1148 | printk("other "); | ||
| 1149 | break; | ||
| 1150 | default: | ||
| 1151 | printk("unknown "); | ||
| 1152 | break; | ||
| 1153 | } | ||
| 1154 | |||
| 1155 | printk("(%d), target = %d cmnd = 0x%02x pieces = %d size = %u\n", | ||
| 1156 | SCpnt->SCp.phase, SCpnt->device->id, *(unsigned char *) SCpnt->cmnd, | ||
| 1157 | scsi_sg_count(SCpnt), scsi_bufflen(SCpnt)); | ||
| 1158 | printk("sent_command = %d, have_data_in = %d, timeout = %d\n", SCpnt->SCp.sent_command, SCpnt->SCp.have_data_in, SCpnt->timeout); | ||
| 1159 | #if DEBUG_RACE | ||
| 1160 | printk("in_interrupt_flag = %d\n", in_interrupt_flag); | ||
| 1161 | #endif | ||
| 1162 | |||
| 1163 | imr = (inb(0x0a1) << 8) + inb(0x21); | ||
| 1164 | outb(0x0a, 0xa0); | ||
| 1165 | irr = inb(0xa0) << 8; | ||
| 1166 | outb(0x0a, 0x20); | ||
| 1167 | irr += inb(0x20); | ||
| 1168 | outb(0x0b, 0xa0); | ||
| 1169 | isr = inb(0xa0) << 8; | ||
| 1170 | outb(0x0b, 0x20); | ||
| 1171 | isr += inb(0x20); | ||
| 1172 | |||
| 1173 | /* Print out interesting information */ | ||
| 1174 | printk("IMR = 0x%04x", imr); | ||
| 1175 | if (imr & (1 << shpnt->irq)) | ||
| 1176 | printk(" (masked)"); | ||
| 1177 | printk(", IRR = 0x%04x, ISR = 0x%04x\n", irr, isr); | ||
| 1178 | |||
| 1179 | printk("SCSI Status = 0x%02x\n", inb(SCSI_Status_port)); | ||
| 1180 | printk("TMC Status = 0x%02x", inb(TMC_Status_port)); | ||
| 1181 | if (inb(TMC_Status_port) & 1) | ||
| 1182 | printk(" (interrupt)"); | ||
| 1183 | printk("\n"); | ||
| 1184 | printk("Interrupt Status = 0x%02x", inb(Interrupt_Status_port)); | ||
| 1185 | if (inb(Interrupt_Status_port) & 0x08) | ||
| 1186 | printk(" (enabled)"); | ||
| 1187 | printk("\n"); | ||
| 1188 | if (chip == tmc18c50 || chip == tmc18c30) { | ||
| 1189 | printk("FIFO Status = 0x%02x\n", inb(shpnt->io_port + FIFO_Status)); | ||
| 1190 | printk("Int. Condition = 0x%02x\n", inb(shpnt->io_port + Interrupt_Cond)); | ||
| 1191 | } | ||
| 1192 | printk("Configuration 1 = 0x%02x\n", inb(shpnt->io_port + Configuration1)); | ||
| 1193 | if (chip == tmc18c50 || chip == tmc18c30) | ||
| 1194 | printk("Configuration 2 = 0x%02x\n", inb(shpnt->io_port + Configuration2)); | ||
| 1195 | } | ||
| 1196 | #endif | ||
| 1197 | |||
| 1198 | static int fd_mcs_abort(Scsi_Cmnd * SCpnt) | ||
| 1199 | { | ||
| 1200 | struct Scsi_Host *shpnt = SCpnt->device->host; | ||
| 1201 | |||
| 1202 | unsigned long flags; | ||
| 1203 | #if EVERY_ACCESS || ERRORS_ONLY || DEBUG_ABORT | ||
| 1204 | printk("fd_mcs: abort "); | ||
| 1205 | #endif | ||
| 1206 | |||
| 1207 | spin_lock_irqsave(shpnt->host_lock, flags); | ||
| 1208 | if (!in_command) { | ||
| 1209 | #if EVERY_ACCESS || ERRORS_ONLY | ||
| 1210 | printk(" (not in command)\n"); | ||
| 1211 | #endif | ||
| 1212 | spin_unlock_irqrestore(shpnt->host_lock, flags); | ||
| 1213 | return FAILED; | ||
| 1214 | } else | ||
| 1215 | printk("\n"); | ||
| 1216 | |||
| 1217 | #if DEBUG_ABORT | ||
| 1218 | fd_mcs_print_info(SCpnt); | ||
| 1219 | #endif | ||
| 1220 | |||
| 1221 | fd_mcs_make_bus_idle(shpnt); | ||
| 1222 | |||
| 1223 | current_SC->SCp.phase |= aborted; | ||
| 1224 | |||
| 1225 | current_SC->result = DID_ABORT << 16; | ||
| 1226 | |||
| 1227 | /* Aborts are not done well. . . */ | ||
| 1228 | my_done(shpnt, DID_ABORT << 16); | ||
| 1229 | |||
| 1230 | spin_unlock_irqrestore(shpnt->host_lock, flags); | ||
| 1231 | return SUCCESS; | ||
| 1232 | } | ||
| 1233 | |||
| 1234 | static int fd_mcs_bus_reset(Scsi_Cmnd * SCpnt) { | ||
| 1235 | struct Scsi_Host *shpnt = SCpnt->device->host; | ||
| 1236 | unsigned long flags; | ||
| 1237 | |||
| 1238 | #if DEBUG_RESET | ||
| 1239 | static int called_once = 0; | ||
| 1240 | #endif | ||
| 1241 | |||
| 1242 | #if ERRORS_ONLY | ||
| 1243 | if (SCpnt) | ||
| 1244 | printk("fd_mcs: SCSI Bus Reset\n"); | ||
| 1245 | #endif | ||
| 1246 | |||
| 1247 | #if DEBUG_RESET | ||
| 1248 | if (called_once) | ||
| 1249 | fd_mcs_print_info(current_SC); | ||
| 1250 | called_once = 1; | ||
| 1251 | #endif | ||
| 1252 | |||
| 1253 | spin_lock_irqsave(shpnt->host_lock, flags); | ||
| 1254 | |||
| 1255 | outb(1, SCSI_Cntl_port); | ||
| 1256 | do_pause(2); | ||
| 1257 | outb(0, SCSI_Cntl_port); | ||
| 1258 | do_pause(115); | ||
| 1259 | outb(0, SCSI_Mode_Cntl_port); | ||
| 1260 | outb(PARITY_MASK, TMC_Cntl_port); | ||
| 1261 | |||
| 1262 | spin_unlock_irqrestore(shpnt->host_lock, flags); | ||
| 1263 | |||
| 1264 | /* Unless this is the very first call (i.e., SCPnt == NULL), everything | ||
| 1265 | is probably hosed at this point. We will, however, try to keep | ||
| 1266 | things going by informing the high-level code that we need help. */ | ||
| 1267 | return SUCCESS; | ||
| 1268 | } | ||
| 1269 | |||
| 1270 | #include <scsi/scsi_ioctl.h> | ||
| 1271 | |||
| 1272 | static int fd_mcs_biosparam(struct scsi_device * disk, struct block_device *bdev, | ||
| 1273 | sector_t capacity, int *info_array) | ||
| 1274 | { | ||
| 1275 | unsigned char *p = scsi_bios_ptable(bdev); | ||
| 1276 | int size = capacity; | ||
| 1277 | |||
| 1278 | /* BIOS >= 3.4 for MCA cards */ | ||
| 1279 | /* This algorithm was provided by Future Domain (much thanks!). */ | ||
| 1280 | |||
| 1281 | if (p && p[65] == 0xaa && p[64] == 0x55 /* Partition table valid */ | ||
| 1282 | && p[4]) { /* Partition type */ | ||
| 1283 | /* The partition table layout is as follows: | ||
| 1284 | |||
| 1285 | Start: 0x1b3h | ||
| 1286 | Offset: 0 = partition status | ||
| 1287 | 1 = starting head | ||
| 1288 | 2 = starting sector and cylinder (word, encoded) | ||
| 1289 | 4 = partition type | ||
| 1290 | 5 = ending head | ||
| 1291 | 6 = ending sector and cylinder (word, encoded) | ||
| 1292 | 8 = starting absolute sector (double word) | ||
| 1293 | c = number of sectors (double word) | ||
| 1294 | Signature: 0x1fe = 0x55aa | ||
| 1295 | |||
| 1296 | So, this algorithm assumes: | ||
| 1297 | 1) the first partition table is in use, | ||
| 1298 | 2) the data in the first entry is correct, and | ||
| 1299 | 3) partitions never divide cylinders | ||
| 1300 | |||
| 1301 | Note that (1) may be FALSE for NetBSD (and other BSD flavors), | ||
| 1302 | as well as for Linux. Note also, that Linux doesn't pay any | ||
| 1303 | attention to the fields that are used by this algorithm -- it | ||
| 1304 | only uses the absolute sector data. Recent versions of Linux's | ||
| 1305 | fdisk(1) will fill this data in correctly, and forthcoming | ||
| 1306 | versions will check for consistency. | ||
| 1307 | |||
| 1308 | Checking for a non-zero partition type is not part of the | ||
| 1309 | Future Domain algorithm, but it seemed to be a reasonable thing | ||
| 1310 | to do, especially in the Linux and BSD worlds. */ | ||
| 1311 | |||
| 1312 | info_array[0] = p[5] + 1; /* heads */ | ||
| 1313 | info_array[1] = p[6] & 0x3f; /* sectors */ | ||
| 1314 | } else { | ||
| 1315 | /* Note that this new method guarantees that there will always be | ||
| 1316 | less than 1024 cylinders on a platter. This is good for drives | ||
| 1317 | up to approximately 7.85GB (where 1GB = 1024 * 1024 kB). */ | ||
| 1318 | if ((unsigned int) size >= 0x7e0000U) | ||
| 1319 | { | ||
| 1320 | info_array[0] = 0xff; /* heads = 255 */ | ||
| 1321 | info_array[1] = 0x3f; /* sectors = 63 */ | ||
| 1322 | } else if ((unsigned int) size >= 0x200000U) { | ||
| 1323 | info_array[0] = 0x80; /* heads = 128 */ | ||
| 1324 | info_array[1] = 0x3f; /* sectors = 63 */ | ||
| 1325 | } else { | ||
| 1326 | info_array[0] = 0x40; /* heads = 64 */ | ||
| 1327 | info_array[1] = 0x20; /* sectors = 32 */ | ||
| 1328 | } | ||
| 1329 | } | ||
| 1330 | /* For both methods, compute the cylinders */ | ||
| 1331 | info_array[2] = (unsigned int) size / (info_array[0] * info_array[1]); | ||
| 1332 | kfree(p); | ||
| 1333 | return 0; | ||
| 1334 | } | ||
| 1335 | |||
| 1336 | static struct scsi_host_template driver_template = { | ||
| 1337 | .proc_name = "fd_mcs", | ||
| 1338 | .proc_info = fd_mcs_proc_info, | ||
| 1339 | .detect = fd_mcs_detect, | ||
| 1340 | .release = fd_mcs_release, | ||
| 1341 | .info = fd_mcs_info, | ||
| 1342 | .queuecommand = fd_mcs_queue, | ||
| 1343 | .eh_abort_handler = fd_mcs_abort, | ||
| 1344 | .eh_bus_reset_handler = fd_mcs_bus_reset, | ||
| 1345 | .bios_param = fd_mcs_biosparam, | ||
| 1346 | .can_queue = 1, | ||
| 1347 | .this_id = 7, | ||
| 1348 | .sg_tablesize = 64, | ||
| 1349 | .cmd_per_lun = 1, | ||
| 1350 | .use_clustering = DISABLE_CLUSTERING, | ||
| 1351 | }; | ||
| 1352 | #include "scsi_module.c" | ||
| 1353 | |||
| 1354 | MODULE_LICENSE("GPL"); | ||
diff --git a/drivers/scsi/ibmmca.c b/drivers/scsi/ibmmca.c deleted file mode 100644 index cd09132d5d7d..000000000000 --- a/drivers/scsi/ibmmca.c +++ /dev/null | |||
| @@ -1,2379 +0,0 @@ | |||
| 1 | /* | ||
| 2 | Low Level Linux Driver for the IBM Microchannel SCSI Subsystem for | ||
| 3 | Linux Kernel >= 2.4.0. | ||
| 4 | Copyright (c) 1995 Strom Systems, Inc. under the terms of the GNU | ||
| 5 | General Public License. Written by Martin Kolinek, December 1995. | ||
| 6 | Further development by: Chris Beauregard, Klaus Kudielka, Michael Lang | ||
| 7 | See the file Documentation/scsi/ibmmca.txt for a detailed description | ||
| 8 | of this driver, the commandline arguments and the history of its | ||
| 9 | development. | ||
| 10 | See the WWW-page: http://www.uni-mainz.de/~langm000/linux.html for latest | ||
| 11 | updates, info and ADF-files for adapters supported by this driver. | ||
| 12 | |||
| 13 | Alan Cox <alan@lxorguk.ukuu.org.uk> | ||
| 14 | Updated for Linux 2.5.45 to use the new error handler, cleaned up the | ||
| 15 | lock macros and did a few unavoidable locking tweaks, plus one locking | ||
| 16 | fix in the irq and completion path. | ||
| 17 | |||
| 18 | */ | ||
| 19 | |||
| 20 | #include <linux/module.h> | ||
| 21 | #include <linux/kernel.h> | ||
| 22 | #include <linux/types.h> | ||
| 23 | #include <linux/ctype.h> | ||
| 24 | #include <linux/string.h> | ||
| 25 | #include <linux/interrupt.h> | ||
| 26 | #include <linux/ioport.h> | ||
| 27 | #include <linux/delay.h> | ||
| 28 | #include <linux/blkdev.h> | ||
| 29 | #include <linux/proc_fs.h> | ||
| 30 | #include <linux/stat.h> | ||
| 31 | #include <linux/mca.h> | ||
| 32 | #include <linux/spinlock.h> | ||
| 33 | #include <linux/init.h> | ||
| 34 | |||
| 35 | #include <asm/io.h> | ||
| 36 | |||
| 37 | #include "scsi.h" | ||
| 38 | #include <scsi/scsi_host.h> | ||
| 39 | |||
| 40 | /* Common forward declarations for all Linux-versions: */ | ||
| 41 | static int ibmmca_queuecommand (struct Scsi_Host *, struct scsi_cmnd *); | ||
| 42 | static int ibmmca_abort (Scsi_Cmnd *); | ||
| 43 | static int ibmmca_host_reset (Scsi_Cmnd *); | ||
| 44 | static int ibmmca_biosparam (struct scsi_device *, struct block_device *, sector_t, int *); | ||
| 45 | static int ibmmca_proc_info(struct Scsi_Host *shpnt, char *buffer, char **start, off_t offset, int length, int inout); | ||
| 46 | |||
| 47 | |||
| 48 | |||
| 49 | /* current version of this driver-source: */ | ||
| 50 | #define IBMMCA_SCSI_DRIVER_VERSION "4.0b-ac" | ||
| 51 | |||
| 52 | /* driver configuration */ | ||
| 53 | #define IM_MAX_HOSTS 8 /* maximum number of host adapters */ | ||
| 54 | #define IM_RESET_DELAY 60 /* seconds allowed for a reset */ | ||
| 55 | |||
| 56 | /* driver debugging - #undef all for normal operation */ | ||
| 57 | /* if defined: count interrupts and ignore this special one: */ | ||
| 58 | #undef IM_DEBUG_TIMEOUT //50 | ||
| 59 | #define TIMEOUT_PUN 0 | ||
| 60 | #define TIMEOUT_LUN 0 | ||
| 61 | /* verbose interrupt: */ | ||
| 62 | #undef IM_DEBUG_INT | ||
| 63 | /* verbose queuecommand: */ | ||
| 64 | #undef IM_DEBUG_CMD | ||
| 65 | /* verbose queucommand for specific SCSI-device type: */ | ||
| 66 | #undef IM_DEBUG_CMD_SPEC_DEV | ||
| 67 | /* verbose device probing */ | ||
| 68 | #undef IM_DEBUG_PROBE | ||
| 69 | |||
| 70 | /* device type that shall be displayed on syslog (only during debugging): */ | ||
| 71 | #define IM_DEBUG_CMD_DEVICE TYPE_TAPE | ||
| 72 | |||
| 73 | /* relative addresses of hardware registers on a subsystem */ | ||
| 74 | #define IM_CMD_REG(h) ((h)->io_port) /*Command Interface, (4 bytes long) */ | ||
| 75 | #define IM_ATTN_REG(h) ((h)->io_port+4) /*Attention (1 byte) */ | ||
| 76 | #define IM_CTR_REG(h) ((h)->io_port+5) /*Basic Control (1 byte) */ | ||
| 77 | #define IM_INTR_REG(h) ((h)->io_port+6) /*Interrupt Status (1 byte, r/o) */ | ||
| 78 | #define IM_STAT_REG(h) ((h)->io_port+7) /*Basic Status (1 byte, read only) */ | ||
| 79 | |||
| 80 | /* basic I/O-port of first adapter */ | ||
| 81 | #define IM_IO_PORT 0x3540 | ||
| 82 | /* maximum number of hosts that can be found */ | ||
| 83 | #define IM_N_IO_PORT 8 | ||
| 84 | |||
| 85 | /*requests going into the upper nibble of the Attention register */ | ||
| 86 | /*note: the lower nibble specifies the device(0-14), or subsystem(15) */ | ||
| 87 | #define IM_IMM_CMD 0x10 /*immediate command */ | ||
| 88 | #define IM_SCB 0x30 /*Subsystem Control Block command */ | ||
| 89 | #define IM_LONG_SCB 0x40 /*long Subsystem Control Block command */ | ||
| 90 | #define IM_EOI 0xe0 /*end-of-interrupt request */ | ||
| 91 | |||
| 92 | /*values for bits 7,1,0 of Basic Control reg. (bits 6-2 reserved) */ | ||
| 93 | #define IM_HW_RESET 0x80 /*hardware reset */ | ||
| 94 | #define IM_ENABLE_DMA 0x02 /*enable subsystem's busmaster DMA */ | ||
| 95 | #define IM_ENABLE_INTR 0x01 /*enable interrupts to the system */ | ||
| 96 | |||
| 97 | /*to interpret the upper nibble of Interrupt Status register */ | ||
| 98 | /*note: the lower nibble specifies the device(0-14), or subsystem(15) */ | ||
| 99 | #define IM_SCB_CMD_COMPLETED 0x10 | ||
| 100 | #define IM_SCB_CMD_COMPLETED_WITH_RETRIES 0x50 | ||
| 101 | #define IM_LOOP_SCATTER_BUFFER_FULL 0x60 | ||
| 102 | #define IM_ADAPTER_HW_FAILURE 0x70 | ||
| 103 | #define IM_IMMEDIATE_CMD_COMPLETED 0xa0 | ||
| 104 | #define IM_CMD_COMPLETED_WITH_FAILURE 0xc0 | ||
| 105 | #define IM_CMD_ERROR 0xe0 | ||
| 106 | #define IM_SOFTWARE_SEQUENCING_ERROR 0xf0 | ||
| 107 | |||
| 108 | /*to interpret bits 3-0 of Basic Status register (bits 7-4 reserved) */ | ||
| 109 | #define IM_CMD_REG_FULL 0x08 | ||
| 110 | #define IM_CMD_REG_EMPTY 0x04 | ||
| 111 | #define IM_INTR_REQUEST 0x02 | ||
| 112 | #define IM_BUSY 0x01 | ||
| 113 | |||
| 114 | /*immediate commands (word written into low 2 bytes of command reg) */ | ||
| 115 | #define IM_RESET_IMM_CMD 0x0400 | ||
| 116 | #define IM_FEATURE_CTR_IMM_CMD 0x040c | ||
| 117 | #define IM_DMA_PACING_IMM_CMD 0x040d | ||
| 118 | #define IM_ASSIGN_IMM_CMD 0x040e | ||
| 119 | #define IM_ABORT_IMM_CMD 0x040f | ||
| 120 | #define IM_FORMAT_PREP_IMM_CMD 0x0417 | ||
| 121 | |||
| 122 | /*SCB (Subsystem Control Block) structure */ | ||
| 123 | struct im_scb { | ||
| 124 | unsigned short command; /*command word (read, etc.) */ | ||
| 125 | unsigned short enable; /*enable word, modifies cmd */ | ||
| 126 | union { | ||
| 127 | unsigned long log_blk_adr; /*block address on SCSI device */ | ||
| 128 | unsigned char scsi_cmd_length; /*6,10,12, for other scsi cmd */ | ||
| 129 | } u1; | ||
| 130 | unsigned long sys_buf_adr; /*physical system memory adr */ | ||
| 131 | unsigned long sys_buf_length; /*size of sys mem buffer */ | ||
| 132 | unsigned long tsb_adr; /*Termination Status Block adr */ | ||
| 133 | unsigned long scb_chain_adr; /*optional SCB chain address */ | ||
| 134 | union { | ||
| 135 | struct { | ||
| 136 | unsigned short count; /*block count, on SCSI device */ | ||
| 137 | unsigned short length; /*block length, on SCSI device */ | ||
| 138 | } blk; | ||
| 139 | unsigned char scsi_command[12]; /*other scsi command */ | ||
| 140 | } u2; | ||
| 141 | }; | ||
| 142 | |||
| 143 | /*structure scatter-gather element (for list of system memory areas) */ | ||
| 144 | struct im_sge { | ||
| 145 | void *address; | ||
| 146 | unsigned long byte_length; | ||
| 147 | }; | ||
| 148 | |||
| 149 | /*structure returned by a get_pos_info command: */ | ||
| 150 | struct im_pos_info { | ||
| 151 | unsigned short pos_id; /* adapter id */ | ||
| 152 | unsigned char pos_3a; /* pos 3 (if pos 6 = 0) */ | ||
| 153 | unsigned char pos_2; /* pos 2 */ | ||
| 154 | unsigned char int_level; /* interrupt level IRQ 11 or 14 */ | ||
| 155 | unsigned char pos_4a; /* pos 4 (if pos 6 = 0) */ | ||
| 156 | unsigned short connector_size; /* MCA connector size: 16 or 32 Bit */ | ||
| 157 | unsigned char num_luns; /* number of supported luns per device */ | ||
| 158 | unsigned char num_puns; /* number of supported puns */ | ||
| 159 | unsigned char pacing_factor; /* pacing factor */ | ||
| 160 | unsigned char num_ldns; /* number of ldns available */ | ||
| 161 | unsigned char eoi_off; /* time EOI and interrupt inactive */ | ||
| 162 | unsigned char max_busy; /* time between reset and busy on */ | ||
| 163 | unsigned short cache_stat; /* ldn cachestat. Bit=1 = not cached */ | ||
| 164 | unsigned short retry_stat; /* retry status of ldns. Bit=1=disabled */ | ||
| 165 | unsigned char pos_4b; /* pos 4 (if pos 6 = 1) */ | ||
| 166 | unsigned char pos_3b; /* pos 3 (if pos 6 = 1) */ | ||
| 167 | unsigned char pos_6; /* pos 6 */ | ||
| 168 | unsigned char pos_5; /* pos 5 */ | ||
| 169 | unsigned short max_overlap; /* maximum overlapping requests */ | ||
| 170 | unsigned short num_bus; /* number of SCSI-busses */ | ||
| 171 | }; | ||
| 172 | |||
| 173 | /*values for SCB command word */ | ||
| 174 | #define IM_NO_SYNCHRONOUS 0x0040 /*flag for any command */ | ||
| 175 | #define IM_NO_DISCONNECT 0x0080 /*flag for any command */ | ||
| 176 | #define IM_READ_DATA_CMD 0x1c01 | ||
| 177 | #define IM_WRITE_DATA_CMD 0x1c02 | ||
| 178 | #define IM_READ_VERIFY_CMD 0x1c03 | ||
| 179 | #define IM_WRITE_VERIFY_CMD 0x1c04 | ||
| 180 | #define IM_REQUEST_SENSE_CMD 0x1c08 | ||
| 181 | #define IM_READ_CAPACITY_CMD 0x1c09 | ||
| 182 | #define IM_DEVICE_INQUIRY_CMD 0x1c0b | ||
| 183 | #define IM_READ_LOGICAL_CMD 0x1c2a | ||
| 184 | #define IM_OTHER_SCSI_CMD_CMD 0x241f | ||
| 185 | |||
| 186 | /* unused, but supported, SCB commands */ | ||
| 187 | #define IM_GET_COMMAND_COMPLETE_STATUS_CMD 0x1c07 /* command status */ | ||
| 188 | #define IM_GET_POS_INFO_CMD 0x1c0a /* returns neat stuff */ | ||
| 189 | #define IM_READ_PREFETCH_CMD 0x1c31 /* caching controller only */ | ||
| 190 | #define IM_FOMAT_UNIT_CMD 0x1c16 /* format unit */ | ||
| 191 | #define IM_REASSIGN_BLOCK_CMD 0x1c18 /* in case of error */ | ||
| 192 | |||
| 193 | /*values to set bits in the enable word of SCB */ | ||
| 194 | #define IM_READ_CONTROL 0x8000 | ||
| 195 | #define IM_REPORT_TSB_ONLY_ON_ERROR 0x4000 | ||
| 196 | #define IM_RETRY_ENABLE 0x2000 | ||
| 197 | #define IM_POINTER_TO_LIST 0x1000 | ||
| 198 | #define IM_SUPRESS_EXCEPTION_SHORT 0x0400 | ||
| 199 | #define IM_BYPASS_BUFFER 0x0200 | ||
| 200 | #define IM_CHAIN_ON_NO_ERROR 0x0001 | ||
| 201 | |||
| 202 | /*TSB (Termination Status Block) structure */ | ||
| 203 | struct im_tsb { | ||
| 204 | unsigned short end_status; | ||
| 205 | unsigned short reserved1; | ||
| 206 | unsigned long residual_byte_count; | ||
| 207 | unsigned long sg_list_element_adr; | ||
| 208 | unsigned short status_length; | ||
| 209 | unsigned char dev_status; | ||
| 210 | unsigned char cmd_status; | ||
| 211 | unsigned char dev_error; | ||
| 212 | unsigned char cmd_error; | ||
| 213 | unsigned short reserved2; | ||
| 214 | unsigned short reserved3; | ||
| 215 | unsigned short low_of_last_scb_adr; | ||
| 216 | unsigned short high_of_last_scb_adr; | ||
| 217 | }; | ||
| 218 | |||
| 219 | /*subsystem uses interrupt request level 14 */ | ||
| 220 | #define IM_IRQ 14 | ||
| 221 | /*SCSI-2 F/W may evade to interrupt 11 */ | ||
| 222 | #define IM_IRQ_FW 11 | ||
| 223 | |||
| 224 | /* Model 95 has an additional alphanumeric display, which can be used | ||
| 225 | to display SCSI-activities. 8595 models do not have any disk led, which | ||
| 226 | makes this feature quite useful. | ||
| 227 | The regular PS/2 disk led is turned on/off by bits 6,7 of system | ||
| 228 | control port. */ | ||
| 229 | |||
| 230 | /* LED display-port (actually, last LED on display) */ | ||
| 231 | #define MOD95_LED_PORT 0x108 | ||
| 232 | /* system-control-register of PS/2s with diskindicator */ | ||
| 233 | #define PS2_SYS_CTR 0x92 | ||
| 234 | /* activity displaying methods */ | ||
| 235 | #define LED_DISP 1 | ||
| 236 | #define LED_ADISP 2 | ||
| 237 | #define LED_ACTIVITY 4 | ||
| 238 | /* failed intr */ | ||
| 239 | #define CMD_FAIL 255 | ||
| 240 | |||
| 241 | /* The SCSI-ID(!) of the accessed SCSI-device is shown on PS/2-95 machines' LED | ||
| 242 | displays. ldn is no longer displayed here, because the ldn mapping is now | ||
| 243 | done dynamically and the ldn <-> pun,lun maps can be looked-up at boottime | ||
| 244 | or during uptime in /proc/scsi/ibmmca/<host_no> in case of trouble, | ||
| 245 | interest, debugging or just for having fun. The left number gives the | ||
| 246 | host-adapter number and the right shows the accessed SCSI-ID. */ | ||
| 247 | |||
| 248 | /* display_mode is set by the ibmmcascsi= command line arg */ | ||
| 249 | static int display_mode = 0; | ||
| 250 | /* set default adapter timeout */ | ||
| 251 | static unsigned int adapter_timeout = 45; | ||
| 252 | /* for probing on feature-command: */ | ||
| 253 | static unsigned int global_command_error_excuse = 0; | ||
| 254 | /* global setting by command line for adapter_speed */ | ||
| 255 | static int global_adapter_speed = 0; /* full speed by default */ | ||
| 256 | |||
| 257 | /* Panel / LED on, do it right for F/W addressin, too. adisplay will | ||
| 258 | * just ignore ids>7, as the panel has only 7 digits available */ | ||
| 259 | #define PS2_DISK_LED_ON(ad,id) { if (display_mode & LED_DISP) { if (id>9) \ | ||
| 260 | outw((ad+48)|((id+55)<<8), MOD95_LED_PORT ); else \ | ||
| 261 | outw((ad+48)|((id+48)<<8), MOD95_LED_PORT ); } else \ | ||
| 262 | if (display_mode & LED_ADISP) { if (id<7) outb((char)(id+48),MOD95_LED_PORT+1+id); \ | ||
| 263 | outb((char)(ad+48), MOD95_LED_PORT); } \ | ||
| 264 | if ((display_mode & LED_ACTIVITY)||(!display_mode)) \ | ||
| 265 | outb(inb(PS2_SYS_CTR) | 0xc0, PS2_SYS_CTR); } | ||
| 266 | |||
| 267 | /* Panel / LED off */ | ||
| 268 | /* bug fixed, Dec 15, 1997, where | was replaced by & here */ | ||
| 269 | #define PS2_DISK_LED_OFF() { if (display_mode & LED_DISP) \ | ||
| 270 | outw(0x2020, MOD95_LED_PORT ); else if (display_mode & LED_ADISP) { \ | ||
| 271 | outl(0x20202020,MOD95_LED_PORT); outl(0x20202020,MOD95_LED_PORT+4); } \ | ||
| 272 | if ((display_mode & LED_ACTIVITY)||(!display_mode)) \ | ||
| 273 | outb(inb(PS2_SYS_CTR) & 0x3f, PS2_SYS_CTR); } | ||
| 274 | |||
| 275 | /* types of different supported hardware that goes to hostdata special */ | ||
| 276 | #define IBM_SCSI2_FW 0 | ||
| 277 | #define IBM_7568_WCACHE 1 | ||
| 278 | #define IBM_EXP_UNIT 2 | ||
| 279 | #define IBM_SCSI_WCACHE 3 | ||
| 280 | #define IBM_SCSI 4 | ||
| 281 | #define IBM_INTEGSCSI 5 | ||
| 282 | |||
| 283 | /* other special flags for hostdata structure */ | ||
| 284 | #define FORCED_DETECTION 100 | ||
| 285 | #define INTEGRATED_SCSI 101 | ||
| 286 | |||
| 287 | /* List of possible IBM-SCSI-adapters */ | ||
| 288 | static short ibmmca_id_table[] = { | ||
| 289 | 0x8efc, | ||
| 290 | 0x8efd, | ||
| 291 | 0x8ef8, | ||
| 292 | 0x8eff, | ||
| 293 | 0x8efe, | ||
| 294 | /* No entry for integrated SCSI, that's part of the register */ | ||
| 295 | 0 | ||
| 296 | }; | ||
| 297 | |||
| 298 | static const char *ibmmca_description[] = { | ||
| 299 | "IBM SCSI-2 F/W Adapter", /* special = 0 */ | ||
| 300 | "IBM 7568 Industrial Computer SCSI Adapter w/Cache", /* special = 1 */ | ||
| 301 | "IBM Expansion Unit SCSI Controller", /* special = 2 */ | ||
| 302 | "IBM SCSI Adapter w/Cache", /* special = 3 */ | ||
| 303 | "IBM SCSI Adapter", /* special = 4 */ | ||
| 304 | "IBM Integrated SCSI Controller", /* special = 5 */ | ||
| 305 | }; | ||
| 306 | |||
| 307 | /* Max number of logical devices (can be up from 0 to 14). 15 is the address | ||
| 308 | of the adapter itself. */ | ||
| 309 | #define MAX_LOG_DEV 15 | ||
| 310 | |||
| 311 | /*local data for a logical device */ | ||
| 312 | struct logical_device { | ||
| 313 | struct im_scb scb; /* SCSI-subsystem-control-block structure */ | ||
| 314 | struct im_tsb tsb; /* SCSI command complete status block structure */ | ||
| 315 | struct im_sge sge[16]; /* scatter gather list structure */ | ||
| 316 | unsigned char buf[256]; /* SCSI command return data buffer */ | ||
| 317 | Scsi_Cmnd *cmd; /* SCSI-command that is currently in progress */ | ||
| 318 | int device_type; /* type of the SCSI-device. See include/scsi/scsi.h | ||
| 319 | for interpretation of the possible values */ | ||
| 320 | int block_length; /* blocksize of a particular logical SCSI-device */ | ||
| 321 | int cache_flag; /* 1 if this is uncached, 0 if cache is present for ldn */ | ||
| 322 | int retry_flag; /* 1 if adapter retry is disabled, 0 if enabled */ | ||
| 323 | }; | ||
| 324 | |||
| 325 | /* statistics of the driver during operations (for proc_info) */ | ||
| 326 | struct Driver_Statistics { | ||
| 327 | /* SCSI statistics on the adapter */ | ||
| 328 | int ldn_access[MAX_LOG_DEV + 1]; /* total accesses on a ldn */ | ||
| 329 | int ldn_read_access[MAX_LOG_DEV + 1]; /* total read-access on a ldn */ | ||
| 330 | int ldn_write_access[MAX_LOG_DEV + 1]; /* total write-access on a ldn */ | ||
| 331 | int ldn_inquiry_access[MAX_LOG_DEV + 1]; /* total inquiries on a ldn */ | ||
| 332 | int ldn_modeselect_access[MAX_LOG_DEV + 1]; /* total mode selects on ldn */ | ||
| 333 | int scbs; /* short SCBs queued */ | ||
| 334 | int long_scbs; /* long SCBs queued */ | ||
| 335 | int total_accesses; /* total accesses on all ldns */ | ||
| 336 | int total_interrupts; /* total interrupts (should be | ||
| 337 | same as total_accesses) */ | ||
| 338 | int total_errors; /* command completed with error */ | ||
| 339 | /* dynamical assignment statistics */ | ||
| 340 | int total_scsi_devices; /* number of physical pun,lun */ | ||
| 341 | int dyn_flag; /* flag showing dynamical mode */ | ||
| 342 | int dynamical_assignments; /* number of remappings of ldns */ | ||
| 343 | int ldn_assignments[MAX_LOG_DEV + 1]; /* number of remappings of each | ||
| 344 | ldn */ | ||
| 345 | }; | ||
| 346 | |||
| 347 | /* data structure for each host adapter */ | ||
| 348 | struct ibmmca_hostdata { | ||
| 349 | /* array of logical devices: */ | ||
| 350 | struct logical_device _ld[MAX_LOG_DEV + 1]; | ||
| 351 | /* array to convert (pun, lun) into logical device number: */ | ||
| 352 | unsigned char _get_ldn[16][8]; | ||
| 353 | /*array that contains the information about the physical SCSI-devices | ||
| 354 | attached to this host adapter: */ | ||
| 355 | unsigned char _get_scsi[16][8]; | ||
| 356 | /* used only when checking logical devices: */ | ||
| 357 | int _local_checking_phase_flag; | ||
| 358 | /* report received interrupt: */ | ||
| 359 | int _got_interrupt; | ||
| 360 | /* report termination-status of SCSI-command: */ | ||
| 361 | int _stat_result; | ||
| 362 | /* reset status (used only when doing reset): */ | ||
| 363 | int _reset_status; | ||
| 364 | /* code of the last SCSI command (needed for panic info): */ | ||
| 365 | int _last_scsi_command[MAX_LOG_DEV + 1]; | ||
| 366 | /* identifier of the last SCSI-command type */ | ||
| 367 | int _last_scsi_type[MAX_LOG_DEV + 1]; | ||
| 368 | /* last blockcount */ | ||
| 369 | int _last_scsi_blockcount[MAX_LOG_DEV + 1]; | ||
| 370 | /* last locgical block address */ | ||
| 371 | unsigned long _last_scsi_logical_block[MAX_LOG_DEV + 1]; | ||
| 372 | /* Counter that points on the next reassignable ldn for dynamical | ||
| 373 | remapping. The default value is 7, that is the first reassignable | ||
| 374 | number in the list at boottime: */ | ||
| 375 | int _next_ldn; | ||
| 376 | /* Statistics-structure for this IBM-SCSI-host: */ | ||
| 377 | struct Driver_Statistics _IBM_DS; | ||
| 378 | /* This hostadapters pos-registers pos2 until pos6 */ | ||
| 379 | unsigned int _pos[8]; | ||
| 380 | /* assign a special variable, that contains dedicated info about the | ||
| 381 | adaptertype */ | ||
| 382 | int _special; | ||
| 383 | /* connector size on the MCA bus */ | ||
| 384 | int _connector_size; | ||
| 385 | /* synchronous SCSI transfer rate bitpattern */ | ||
| 386 | int _adapter_speed; | ||
| 387 | }; | ||
| 388 | |||
| 389 | /* macros to access host data structure */ | ||
| 390 | #define subsystem_pun(h) ((h)->this_id) | ||
| 391 | #define subsystem_maxid(h) ((h)->max_id) | ||
| 392 | #define ld(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_ld) | ||
| 393 | #define get_ldn(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_get_ldn) | ||
| 394 | #define get_scsi(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_get_scsi) | ||
| 395 | #define local_checking_phase_flag(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_local_checking_phase_flag) | ||
| 396 | #define got_interrupt(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_got_interrupt) | ||
| 397 | #define stat_result(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_stat_result) | ||
| 398 | #define reset_status(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_reset_status) | ||
| 399 | #define last_scsi_command(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_last_scsi_command) | ||
| 400 | #define last_scsi_type(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_last_scsi_type) | ||
| 401 | #define last_scsi_blockcount(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_last_scsi_blockcount) | ||
| 402 | #define last_scsi_logical_block(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_last_scsi_logical_block) | ||
| 403 | #define last_scsi_type(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_last_scsi_type) | ||
| 404 | #define next_ldn(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_next_ldn) | ||
| 405 | #define IBM_DS(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_IBM_DS) | ||
| 406 | #define special(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_special) | ||
| 407 | #define subsystem_connector_size(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_connector_size) | ||
| 408 | #define adapter_speed(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_adapter_speed) | ||
| 409 | #define pos2(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_pos[2]) | ||
| 410 | #define pos3(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_pos[3]) | ||
| 411 | #define pos4(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_pos[4]) | ||
| 412 | #define pos5(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_pos[5]) | ||
| 413 | #define pos6(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_pos[6]) | ||
| 414 | |||
| 415 | /* Define a arbitrary number as subsystem-marker-type. This number is, as | ||
| 416 | described in the ANSI-SCSI-standard, not occupied by other device-types. */ | ||
| 417 | #define TYPE_IBM_SCSI_ADAPTER 0x2F | ||
| 418 | |||
| 419 | /* Define 0xFF for no device type, because this type is not defined within | ||
| 420 | the ANSI-SCSI-standard, therefore, it can be used and should not cause any | ||
| 421 | harm. */ | ||
| 422 | #define TYPE_NO_DEVICE 0xFF | ||
| 423 | |||
| 424 | /* define medium-changer. If this is not defined previously, e.g. Linux | ||
| 425 | 2.0.x, define this type here. */ | ||
| 426 | #ifndef TYPE_MEDIUM_CHANGER | ||
| 427 | #define TYPE_MEDIUM_CHANGER 0x08 | ||
| 428 | #endif | ||
| 429 | |||
| 430 | /* define possible operations for the immediate_assign command */ | ||
| 431 | #define SET_LDN 0 | ||
| 432 | #define REMOVE_LDN 1 | ||
| 433 | |||
| 434 | /* ldn which is used to probe the SCSI devices */ | ||
| 435 | #define PROBE_LDN 0 | ||
| 436 | |||
| 437 | /* reset status flag contents */ | ||
| 438 | #define IM_RESET_NOT_IN_PROGRESS 0 | ||
| 439 | #define IM_RESET_IN_PROGRESS 1 | ||
| 440 | #define IM_RESET_FINISHED_OK 2 | ||
| 441 | #define IM_RESET_FINISHED_FAIL 3 | ||
| 442 | #define IM_RESET_NOT_IN_PROGRESS_NO_INT 4 | ||
| 443 | #define IM_RESET_FINISHED_OK_NO_INT 5 | ||
| 444 | |||
| 445 | /* define undefined SCSI-command */ | ||
| 446 | #define NO_SCSI 0xffff | ||
| 447 | |||
| 448 | /*-----------------------------------------------------------------------*/ | ||
| 449 | |||
| 450 | /* if this is nonzero, ibmmcascsi option has been passed to the kernel */ | ||
| 451 | static int io_port[IM_MAX_HOSTS] = { 0, 0, 0, 0, 0, 0, 0, 0 }; | ||
| 452 | static int scsi_id[IM_MAX_HOSTS] = { 7, 7, 7, 7, 7, 7, 7, 7 }; | ||
| 453 | |||
| 454 | /* fill module-parameters only, when this define is present. | ||
| 455 | (that is kernel version 2.1.x) */ | ||
| 456 | #if defined(MODULE) | ||
| 457 | static char *boot_options = NULL; | ||
| 458 | module_param(boot_options, charp, 0); | ||
| 459 | module_param_array(io_port, int, NULL, 0); | ||
| 460 | module_param_array(scsi_id, int, NULL, 0); | ||
| 461 | |||
| 462 | MODULE_LICENSE("GPL"); | ||
| 463 | #endif | ||
| 464 | /*counter of concurrent disk read/writes, to turn on/off disk led */ | ||
| 465 | static int disk_rw_in_progress = 0; | ||
| 466 | |||
| 467 | static unsigned int pos[8]; /* whole pos register-line for diagnosis */ | ||
| 468 | /* Taking into account the additions, made by ZP Gu. | ||
| 469 | * This selects now the preset value from the configfile and | ||
| 470 | * offers the 'normal' commandline option to be accepted */ | ||
| 471 | #ifdef CONFIG_IBMMCA_SCSI_ORDER_STANDARD | ||
| 472 | static char ibm_ansi_order = 1; | ||
| 473 | #else | ||
| 474 | static char ibm_ansi_order = 0; | ||
| 475 | #endif | ||
| 476 | |||
| 477 | static void issue_cmd(struct Scsi_Host *, unsigned long, unsigned char); | ||
| 478 | static void internal_done(Scsi_Cmnd * cmd); | ||
| 479 | static void check_devices(struct Scsi_Host *, int); | ||
| 480 | static int immediate_assign(struct Scsi_Host *, unsigned int, unsigned int, unsigned int, unsigned int); | ||
| 481 | static int immediate_feature(struct Scsi_Host *, unsigned int, unsigned int); | ||
| 482 | #ifdef CONFIG_IBMMCA_SCSI_DEV_RESET | ||
| 483 | static int immediate_reset(struct Scsi_Host *, unsigned int); | ||
| 484 | #endif | ||
| 485 | static int device_inquiry(struct Scsi_Host *, int); | ||
| 486 | static int read_capacity(struct Scsi_Host *, int); | ||
| 487 | static int get_pos_info(struct Scsi_Host *); | ||
| 488 | static char *ti_p(int); | ||
| 489 | static char *ti_l(int); | ||
| 490 | static char *ibmrate(unsigned int, int); | ||
| 491 | static int probe_display(int); | ||
| 492 | static int probe_bus_mode(struct Scsi_Host *); | ||
| 493 | static int device_exists(struct Scsi_Host *, int, int *, int *); | ||
| 494 | static int option_setup(char *); | ||
| 495 | /* local functions needed for proc_info */ | ||
| 496 | static int ldn_access_load(struct Scsi_Host *, int); | ||
| 497 | static int ldn_access_total_read_write(struct Scsi_Host *); | ||
| 498 | |||
| 499 | static irqreturn_t interrupt_handler(int irq, void *dev_id) | ||
| 500 | { | ||
| 501 | unsigned int intr_reg; | ||
| 502 | unsigned int cmd_result; | ||
| 503 | unsigned int ldn; | ||
| 504 | unsigned long flags; | ||
| 505 | Scsi_Cmnd *cmd; | ||
| 506 | int lastSCSI; | ||
| 507 | struct device *dev = dev_id; | ||
| 508 | struct Scsi_Host *shpnt = dev_get_drvdata(dev); | ||
| 509 | |||
| 510 | spin_lock_irqsave(shpnt->host_lock, flags); | ||
| 511 | |||
| 512 | if(!(inb(IM_STAT_REG(shpnt)) & IM_INTR_REQUEST)) { | ||
| 513 | spin_unlock_irqrestore(shpnt->host_lock, flags); | ||
| 514 | return IRQ_NONE; | ||
| 515 | } | ||
| 516 | |||
| 517 | /* the reset-function already did all the job, even ints got | ||
| 518 | renabled on the subsystem, so just return */ | ||
| 519 | if ((reset_status(shpnt) == IM_RESET_NOT_IN_PROGRESS_NO_INT) || (reset_status(shpnt) == IM_RESET_FINISHED_OK_NO_INT)) { | ||
| 520 | reset_status(shpnt) = IM_RESET_NOT_IN_PROGRESS; | ||
| 521 | spin_unlock_irqrestore(shpnt->host_lock, flags); | ||
| 522 | return IRQ_HANDLED; | ||
| 523 | } | ||
| 524 | |||
| 525 | /*must wait for attention reg not busy, then send EOI to subsystem */ | ||
| 526 | while (1) { | ||
| 527 | if (!(inb(IM_STAT_REG(shpnt)) & IM_BUSY)) | ||
| 528 | break; | ||
| 529 | cpu_relax(); | ||
| 530 | } | ||
| 531 | |||
| 532 | /*get command result and logical device */ | ||
| 533 | intr_reg = (unsigned char) (inb(IM_INTR_REG(shpnt))); | ||
| 534 | cmd_result = intr_reg & 0xf0; | ||
| 535 | ldn = intr_reg & 0x0f; | ||
| 536 | /* get the last_scsi_command here */ | ||
| 537 | lastSCSI = last_scsi_command(shpnt)[ldn]; | ||
| 538 | outb(IM_EOI | ldn, IM_ATTN_REG(shpnt)); | ||
| 539 | |||
| 540 | /*these should never happen (hw fails, or a local programming bug) */ | ||
| 541 | if (!global_command_error_excuse) { | ||
| 542 | switch (cmd_result) { | ||
| 543 | /* Prevent from Ooopsing on error to show the real reason */ | ||
| 544 | case IM_ADAPTER_HW_FAILURE: | ||
| 545 | case IM_SOFTWARE_SEQUENCING_ERROR: | ||
| 546 | case IM_CMD_ERROR: | ||
| 547 | printk(KERN_ERR "IBM MCA SCSI: Fatal Subsystem ERROR!\n"); | ||
| 548 | printk(KERN_ERR " Last cmd=0x%x, ena=%x, len=", lastSCSI, ld(shpnt)[ldn].scb.enable); | ||
| 549 | if (ld(shpnt)[ldn].cmd) | ||
| 550 | printk("%ld/%ld,", (long) (scsi_bufflen(ld(shpnt)[ldn].cmd)), (long) (ld(shpnt)[ldn].scb.sys_buf_length)); | ||
| 551 | else | ||
| 552 | printk("none,"); | ||
| 553 | if (ld(shpnt)[ldn].cmd) | ||
| 554 | printk("Blocksize=%d", ld(shpnt)[ldn].scb.u2.blk.length); | ||
| 555 | else | ||
| 556 | printk("Blocksize=none"); | ||
| 557 | printk(", host=%p, ldn=0x%x\n", shpnt, ldn); | ||
| 558 | if (ld(shpnt)[ldn].cmd) { | ||
| 559 | printk(KERN_ERR "Blockcount=%d/%d\n", last_scsi_blockcount(shpnt)[ldn], ld(shpnt)[ldn].scb.u2.blk.count); | ||
| 560 | printk(KERN_ERR "Logical block=%lx/%lx\n", last_scsi_logical_block(shpnt)[ldn], ld(shpnt)[ldn].scb.u1.log_blk_adr); | ||
| 561 | } | ||
| 562 | printk(KERN_ERR "Reason given: %s\n", (cmd_result == IM_ADAPTER_HW_FAILURE) ? "HARDWARE FAILURE" : (cmd_result == IM_SOFTWARE_SEQUENCING_ERROR) ? "SOFTWARE SEQUENCING ERROR" : (cmd_result == IM_CMD_ERROR) ? "COMMAND ERROR" : "UNKNOWN"); | ||
| 563 | /* if errors appear, enter this section to give detailed info */ | ||
| 564 | printk(KERN_ERR "IBM MCA SCSI: Subsystem Error-Status follows:\n"); | ||
| 565 | printk(KERN_ERR " Command Type................: %x\n", last_scsi_type(shpnt)[ldn]); | ||
| 566 | printk(KERN_ERR " Attention Register..........: %x\n", inb(IM_ATTN_REG(shpnt))); | ||
| 567 | printk(KERN_ERR " Basic Control Register......: %x\n", inb(IM_CTR_REG(shpnt))); | ||
| 568 | printk(KERN_ERR " Interrupt Status Register...: %x\n", intr_reg); | ||
| 569 | printk(KERN_ERR " Basic Status Register.......: %x\n", inb(IM_STAT_REG(shpnt))); | ||
| 570 | if ((last_scsi_type(shpnt)[ldn] == IM_SCB) || (last_scsi_type(shpnt)[ldn] == IM_LONG_SCB)) { | ||
| 571 | printk(KERN_ERR " SCB-Command.................: %x\n", ld(shpnt)[ldn].scb.command); | ||
| 572 | printk(KERN_ERR " SCB-Enable..................: %x\n", ld(shpnt)[ldn].scb.enable); | ||
| 573 | printk(KERN_ERR " SCB-logical block address...: %lx\n", ld(shpnt)[ldn].scb.u1.log_blk_adr); | ||
| 574 | printk(KERN_ERR " SCB-system buffer address...: %lx\n", ld(shpnt)[ldn].scb.sys_buf_adr); | ||
| 575 | printk(KERN_ERR " SCB-system buffer length....: %lx\n", ld(shpnt)[ldn].scb.sys_buf_length); | ||
| 576 | printk(KERN_ERR " SCB-tsb address.............: %lx\n", ld(shpnt)[ldn].scb.tsb_adr); | ||
| 577 | printk(KERN_ERR " SCB-Chain address...........: %lx\n", ld(shpnt)[ldn].scb.scb_chain_adr); | ||
| 578 | printk(KERN_ERR " SCB-block count.............: %x\n", ld(shpnt)[ldn].scb.u2.blk.count); | ||
| 579 | printk(KERN_ERR " SCB-block length............: %x\n", ld(shpnt)[ldn].scb.u2.blk.length); | ||
| 580 | } | ||
| 581 | printk(KERN_ERR " Send this report to the maintainer.\n"); | ||
| 582 | panic("IBM MCA SCSI: Fatal error message from the subsystem (0x%X,0x%X)!\n", lastSCSI, cmd_result); | ||
| 583 | break; | ||
| 584 | } | ||
| 585 | } else { | ||
| 586 | /* The command error handling is made silent, but we tell the | ||
| 587 | * calling function, that there is a reported error from the | ||
| 588 | * adapter. */ | ||
| 589 | switch (cmd_result) { | ||
| 590 | case IM_ADAPTER_HW_FAILURE: | ||
| 591 | case IM_SOFTWARE_SEQUENCING_ERROR: | ||
| 592 | case IM_CMD_ERROR: | ||
| 593 | global_command_error_excuse = CMD_FAIL; | ||
| 594 | break; | ||
| 595 | default: | ||
| 596 | global_command_error_excuse = 0; | ||
| 597 | break; | ||
| 598 | } | ||
| 599 | } | ||
| 600 | /* if no panic appeared, increase the interrupt-counter */ | ||
| 601 | IBM_DS(shpnt).total_interrupts++; | ||
| 602 | /*only for local checking phase */ | ||
| 603 | if (local_checking_phase_flag(shpnt)) { | ||
| 604 | stat_result(shpnt) = cmd_result; | ||
| 605 | got_interrupt(shpnt) = 1; | ||
| 606 | reset_status(shpnt) = IM_RESET_FINISHED_OK; | ||
| 607 | last_scsi_command(shpnt)[ldn] = NO_SCSI; | ||
| 608 | spin_unlock_irqrestore(shpnt->host_lock, flags); | ||
| 609 | return IRQ_HANDLED; | ||
| 610 | } | ||
| 611 | /* handling of commands coming from upper level of scsi driver */ | ||
| 612 | if (last_scsi_type(shpnt)[ldn] == IM_IMM_CMD) { | ||
| 613 | /* verify ldn, and may handle rare reset immediate command */ | ||
| 614 | if ((reset_status(shpnt) == IM_RESET_IN_PROGRESS) && (last_scsi_command(shpnt)[ldn] == IM_RESET_IMM_CMD)) { | ||
| 615 | if (cmd_result == IM_CMD_COMPLETED_WITH_FAILURE) { | ||
| 616 | disk_rw_in_progress = 0; | ||
| 617 | PS2_DISK_LED_OFF(); | ||
| 618 | reset_status(shpnt) = IM_RESET_FINISHED_FAIL; | ||
| 619 | } else { | ||
| 620 | /*reset disk led counter, turn off disk led */ | ||
| 621 | disk_rw_in_progress = 0; | ||
| 622 | PS2_DISK_LED_OFF(); | ||
| 623 | reset_status(shpnt) = IM_RESET_FINISHED_OK; | ||
| 624 | } | ||
| 625 | stat_result(shpnt) = cmd_result; | ||
| 626 | last_scsi_command(shpnt)[ldn] = NO_SCSI; | ||
| 627 | last_scsi_type(shpnt)[ldn] = 0; | ||
| 628 | spin_unlock_irqrestore(shpnt->host_lock, flags); | ||
| 629 | return IRQ_HANDLED; | ||
| 630 | } else if (last_scsi_command(shpnt)[ldn] == IM_ABORT_IMM_CMD) { | ||
| 631 | /* react on SCSI abort command */ | ||
| 632 | #ifdef IM_DEBUG_PROBE | ||
| 633 | printk("IBM MCA SCSI: Interrupt from SCSI-abort.\n"); | ||
| 634 | #endif | ||
| 635 | disk_rw_in_progress = 0; | ||
| 636 | PS2_DISK_LED_OFF(); | ||
| 637 | cmd = ld(shpnt)[ldn].cmd; | ||
| 638 | ld(shpnt)[ldn].cmd = NULL; | ||
| 639 | if (cmd_result == IM_CMD_COMPLETED_WITH_FAILURE) | ||
| 640 | cmd->result = DID_NO_CONNECT << 16; | ||
| 641 | else | ||
| 642 | cmd->result = DID_ABORT << 16; | ||
| 643 | stat_result(shpnt) = cmd_result; | ||
| 644 | last_scsi_command(shpnt)[ldn] = NO_SCSI; | ||
| 645 | last_scsi_type(shpnt)[ldn] = 0; | ||
| 646 | if (cmd->scsi_done) | ||
| 647 | (cmd->scsi_done) (cmd); /* should be the internal_done */ | ||
| 648 | spin_unlock_irqrestore(shpnt->host_lock, flags); | ||
| 649 | return IRQ_HANDLED; | ||
| 650 | } else { | ||
| 651 | disk_rw_in_progress = 0; | ||
| 652 | PS2_DISK_LED_OFF(); | ||
| 653 | reset_status(shpnt) = IM_RESET_FINISHED_OK; | ||
| 654 | stat_result(shpnt) = cmd_result; | ||
| 655 | last_scsi_command(shpnt)[ldn] = NO_SCSI; | ||
| 656 | spin_unlock_irqrestore(shpnt->host_lock, flags); | ||
| 657 | return IRQ_HANDLED; | ||
| 658 | } | ||
| 659 | } | ||
| 660 | last_scsi_command(shpnt)[ldn] = NO_SCSI; | ||
| 661 | last_scsi_type(shpnt)[ldn] = 0; | ||
| 662 | cmd = ld(shpnt)[ldn].cmd; | ||
| 663 | ld(shpnt)[ldn].cmd = NULL; | ||
| 664 | #ifdef IM_DEBUG_TIMEOUT | ||
| 665 | if (cmd) { | ||
| 666 | if ((cmd->target == TIMEOUT_PUN) && (cmd->device->lun == TIMEOUT_LUN)) { | ||
| 667 | spin_unlock_irqsave(shpnt->host_lock, flags); | ||
| 668 | printk("IBM MCA SCSI: Ignoring interrupt from pun=%x, lun=%x.\n", cmd->target, cmd->device->lun); | ||
| 669 | return IRQ_HANDLED; | ||
| 670 | } | ||
| 671 | } | ||
| 672 | #endif | ||
| 673 | /*if no command structure, just return, else clear cmd */ | ||
| 674 | if (!cmd) | ||
| 675 | { | ||
| 676 | spin_unlock_irqrestore(shpnt->host_lock, flags); | ||
| 677 | return IRQ_HANDLED; | ||
| 678 | } | ||
| 679 | |||
| 680 | #ifdef IM_DEBUG_INT | ||
| 681 | printk("cmd=%02x ireg=%02x ds=%02x cs=%02x de=%02x ce=%02x\n", cmd->cmnd[0], intr_reg, ld(shpnt)[ldn].tsb.dev_status, ld(shpnt)[ldn].tsb.cmd_status, ld(shpnt)[ldn].tsb.dev_error, ld(shpnt)[ldn].tsb.cmd_error); | ||
| 682 | #endif | ||
| 683 | /*if this is end of media read/write, may turn off PS/2 disk led */ | ||
| 684 | if ((ld(shpnt)[ldn].device_type != TYPE_NO_LUN) && (ld(shpnt)[ldn].device_type != TYPE_NO_DEVICE)) { | ||
| 685 | /* only access this, if there was a valid device addressed */ | ||
| 686 | if (--disk_rw_in_progress == 0) | ||
| 687 | PS2_DISK_LED_OFF(); | ||
| 688 | } | ||
| 689 | |||
| 690 | /* IBM describes the status-mask to be 0x1e, but this is not conform | ||
| 691 | * with SCSI-definition, I suppose, the reason for it is that IBM | ||
| 692 | * adapters do not support CMD_TERMINATED, TASK_SET_FULL and | ||
| 693 | * ACA_ACTIVE as returning statusbyte information. (ML) */ | ||
| 694 | if (cmd_result == IM_CMD_COMPLETED_WITH_FAILURE) { | ||
| 695 | cmd->result = (unsigned char) (ld(shpnt)[ldn].tsb.dev_status & 0x1e); | ||
| 696 | IBM_DS(shpnt).total_errors++; | ||
| 697 | } else | ||
| 698 | cmd->result = 0; | ||
| 699 | /* write device status into cmd->result, and call done function */ | ||
| 700 | if (lastSCSI == NO_SCSI) { /* unexpected interrupt :-( */ | ||
| 701 | cmd->result |= DID_BAD_INTR << 16; | ||
| 702 | printk("IBM MCA SCSI: WARNING - Interrupt from non-pending SCSI-command!\n"); | ||
| 703 | } else /* things went right :-) */ | ||
| 704 | cmd->result |= DID_OK << 16; | ||
| 705 | if (cmd->scsi_done) | ||
| 706 | (cmd->scsi_done) (cmd); | ||
| 707 | spin_unlock_irqrestore(shpnt->host_lock, flags); | ||
| 708 | return IRQ_HANDLED; | ||
| 709 | } | ||
| 710 | |||
| 711 | static void issue_cmd(struct Scsi_Host *shpnt, unsigned long cmd_reg, | ||
| 712 | unsigned char attn_reg) | ||
| 713 | { | ||
| 714 | unsigned long flags; | ||
| 715 | /* must wait for attention reg not busy */ | ||
| 716 | while (1) { | ||
| 717 | spin_lock_irqsave(shpnt->host_lock, flags); | ||
| 718 | if (!(inb(IM_STAT_REG(shpnt)) & IM_BUSY)) | ||
| 719 | break; | ||
| 720 | spin_unlock_irqrestore(shpnt->host_lock, flags); | ||
| 721 | } | ||
| 722 | /* write registers and enable system interrupts */ | ||
| 723 | outl(cmd_reg, IM_CMD_REG(shpnt)); | ||
| 724 | outb(attn_reg, IM_ATTN_REG(shpnt)); | ||
| 725 | spin_unlock_irqrestore(shpnt->host_lock, flags); | ||
| 726 | } | ||
| 727 | |||
| 728 | static void internal_done(Scsi_Cmnd * cmd) | ||
| 729 | { | ||
| 730 | cmd->SCp.Status++; | ||
| 731 | return; | ||
| 732 | } | ||
| 733 | |||
| 734 | /* SCSI-SCB-command for device_inquiry */ | ||
| 735 | static int device_inquiry(struct Scsi_Host *shpnt, int ldn) | ||
| 736 | { | ||
| 737 | int retr; | ||
| 738 | struct im_scb *scb; | ||
| 739 | struct im_tsb *tsb; | ||
| 740 | unsigned char *buf; | ||
| 741 | |||
| 742 | scb = &(ld(shpnt)[ldn].scb); | ||
| 743 | tsb = &(ld(shpnt)[ldn].tsb); | ||
| 744 | buf = (unsigned char *) (&(ld(shpnt)[ldn].buf)); | ||
| 745 | ld(shpnt)[ldn].tsb.dev_status = 0; /* prepare statusblock */ | ||
| 746 | for (retr = 0; retr < 3; retr++) { | ||
| 747 | /* fill scb with inquiry command */ | ||
| 748 | scb->command = IM_DEVICE_INQUIRY_CMD | IM_NO_DISCONNECT; | ||
| 749 | scb->enable = IM_REPORT_TSB_ONLY_ON_ERROR | IM_READ_CONTROL | IM_SUPRESS_EXCEPTION_SHORT | IM_RETRY_ENABLE | IM_BYPASS_BUFFER; | ||
| 750 | last_scsi_command(shpnt)[ldn] = IM_DEVICE_INQUIRY_CMD; | ||
| 751 | last_scsi_type(shpnt)[ldn] = IM_SCB; | ||
| 752 | scb->sys_buf_adr = isa_virt_to_bus(buf); | ||
| 753 | scb->sys_buf_length = 255; /* maximum bufferlength gives max info */ | ||
| 754 | scb->tsb_adr = isa_virt_to_bus(tsb); | ||
| 755 | /* issue scb to passed ldn, and busy wait for interrupt */ | ||
| 756 | got_interrupt(shpnt) = 0; | ||
| 757 | issue_cmd(shpnt, isa_virt_to_bus(scb), IM_SCB | ldn); | ||
| 758 | while (!got_interrupt(shpnt)) | ||
| 759 | barrier(); | ||
| 760 | |||
| 761 | /*if command successful, break */ | ||
| 762 | if ((stat_result(shpnt) == IM_SCB_CMD_COMPLETED) || (stat_result(shpnt) == IM_SCB_CMD_COMPLETED_WITH_RETRIES)) | ||
| 763 | return 1; | ||
| 764 | } | ||
| 765 | /*if all three retries failed, return "no device at this ldn" */ | ||
| 766 | if (retr >= 3) | ||
| 767 | return 0; | ||
| 768 | else | ||
| 769 | return 1; | ||
| 770 | } | ||
| 771 | |||
| 772 | static int read_capacity(struct Scsi_Host *shpnt, int ldn) | ||
| 773 | { | ||
| 774 | int retr; | ||
| 775 | struct im_scb *scb; | ||
| 776 | struct im_tsb *tsb; | ||
| 777 | unsigned char *buf; | ||
| 778 | |||
| 779 | scb = &(ld(shpnt)[ldn].scb); | ||
| 780 | tsb = &(ld(shpnt)[ldn].tsb); | ||
| 781 | buf = (unsigned char *) (&(ld(shpnt)[ldn].buf)); | ||
| 782 | ld(shpnt)[ldn].tsb.dev_status = 0; | ||
| 783 | for (retr = 0; retr < 3; retr++) { | ||
| 784 | /*fill scb with read capacity command */ | ||
| 785 | scb->command = IM_READ_CAPACITY_CMD; | ||
| 786 | scb->enable = IM_REPORT_TSB_ONLY_ON_ERROR | IM_READ_CONTROL | IM_RETRY_ENABLE | IM_BYPASS_BUFFER; | ||
| 787 | last_scsi_command(shpnt)[ldn] = IM_READ_CAPACITY_CMD; | ||
| 788 | last_scsi_type(shpnt)[ldn] = IM_SCB; | ||
| 789 | scb->sys_buf_adr = isa_virt_to_bus(buf); | ||
| 790 | scb->sys_buf_length = 8; | ||
| 791 | scb->tsb_adr = isa_virt_to_bus(tsb); | ||
| 792 | /*issue scb to passed ldn, and busy wait for interrupt */ | ||
| 793 | got_interrupt(shpnt) = 0; | ||
| 794 | issue_cmd(shpnt, isa_virt_to_bus(scb), IM_SCB | ldn); | ||
| 795 | while (!got_interrupt(shpnt)) | ||
| 796 | barrier(); | ||
| 797 | |||
| 798 | /*if got capacity, get block length and return one device found */ | ||
| 799 | if ((stat_result(shpnt) == IM_SCB_CMD_COMPLETED) || (stat_result(shpnt) == IM_SCB_CMD_COMPLETED_WITH_RETRIES)) | ||
| 800 | return 1; | ||
| 801 | } | ||
| 802 | /*if all three retries failed, return "no device at this ldn" */ | ||
| 803 | if (retr >= 3) | ||
| 804 | return 0; | ||
| 805 | else | ||
| 806 | return 1; | ||
| 807 | } | ||
| 808 | |||
| 809 | static int get_pos_info(struct Scsi_Host *shpnt) | ||
| 810 | { | ||
| 811 | int retr; | ||
| 812 | struct im_scb *scb; | ||
| 813 | struct im_tsb *tsb; | ||
| 814 | unsigned char *buf; | ||
| 815 | |||
| 816 | scb = &(ld(shpnt)[MAX_LOG_DEV].scb); | ||
| 817 | tsb = &(ld(shpnt)[MAX_LOG_DEV].tsb); | ||
| 818 | buf = (unsigned char *) (&(ld(shpnt)[MAX_LOG_DEV].buf)); | ||
| 819 | ld(shpnt)[MAX_LOG_DEV].tsb.dev_status = 0; | ||
| 820 | for (retr = 0; retr < 3; retr++) { | ||
| 821 | /*fill scb with get_pos_info command */ | ||
| 822 | scb->command = IM_GET_POS_INFO_CMD; | ||
| 823 | scb->enable = IM_READ_CONTROL | IM_REPORT_TSB_ONLY_ON_ERROR | IM_RETRY_ENABLE | IM_BYPASS_BUFFER; | ||
| 824 | last_scsi_command(shpnt)[MAX_LOG_DEV] = IM_GET_POS_INFO_CMD; | ||
| 825 | last_scsi_type(shpnt)[MAX_LOG_DEV] = IM_SCB; | ||
| 826 | scb->sys_buf_adr = isa_virt_to_bus(buf); | ||
| 827 | if (special(shpnt) == IBM_SCSI2_FW) | ||
| 828 | scb->sys_buf_length = 256; /* get all info from F/W adapter */ | ||
| 829 | else | ||
| 830 | scb->sys_buf_length = 18; /* get exactly 18 bytes for other SCSI */ | ||
| 831 | scb->tsb_adr = isa_virt_to_bus(tsb); | ||
| 832 | /*issue scb to ldn=15, and busy wait for interrupt */ | ||
| 833 | got_interrupt(shpnt) = 0; | ||
| 834 | issue_cmd(shpnt, isa_virt_to_bus(scb), IM_SCB | MAX_LOG_DEV); | ||
| 835 | |||
| 836 | /* FIXME: timeout */ | ||
| 837 | while (!got_interrupt(shpnt)) | ||
| 838 | barrier(); | ||
| 839 | |||
| 840 | /*if got POS-stuff, get block length and return one device found */ | ||
| 841 | if ((stat_result(shpnt) == IM_SCB_CMD_COMPLETED) || (stat_result(shpnt) == IM_SCB_CMD_COMPLETED_WITH_RETRIES)) | ||
| 842 | return 1; | ||
| 843 | } | ||
| 844 | /* if all three retries failed, return "no device at this ldn" */ | ||
| 845 | if (retr >= 3) | ||
| 846 | return 0; | ||
| 847 | else | ||
| 848 | return 1; | ||
| 849 | } | ||
| 850 | |||
| 851 | /* SCSI-immediate-command for assign. This functions maps/unmaps specific | ||
| 852 | ldn-numbers on SCSI (PUN,LUN). It is needed for presetting of the | ||
| 853 | subsystem and for dynamical remapping od ldns. */ | ||
| 854 | static int immediate_assign(struct Scsi_Host *shpnt, unsigned int pun, | ||
| 855 | unsigned int lun, unsigned int ldn, | ||
| 856 | unsigned int operation) | ||
| 857 | { | ||
| 858 | int retr; | ||
| 859 | unsigned long imm_cmd; | ||
| 860 | |||
| 861 | for (retr = 0; retr < 3; retr++) { | ||
| 862 | /* select mutation level of the SCSI-adapter */ | ||
| 863 | switch (special(shpnt)) { | ||
| 864 | case IBM_SCSI2_FW: | ||
| 865 | imm_cmd = (unsigned long) (IM_ASSIGN_IMM_CMD); | ||
| 866 | imm_cmd |= (unsigned long) ((lun & 7) << 24); | ||
| 867 | imm_cmd |= (unsigned long) ((operation & 1) << 23); | ||
| 868 | imm_cmd |= (unsigned long) ((pun & 7) << 20) | ((pun & 8) << 24); | ||
| 869 | imm_cmd |= (unsigned long) ((ldn & 15) << 16); | ||
| 870 | break; | ||
| 871 | default: | ||
| 872 | imm_cmd = inl(IM_CMD_REG(shpnt)); | ||
| 873 | imm_cmd &= (unsigned long) (0xF8000000); /* keep reserved bits */ | ||
| 874 | imm_cmd |= (unsigned long) (IM_ASSIGN_IMM_CMD); | ||
| 875 | imm_cmd |= (unsigned long) ((lun & 7) << 24); | ||
| 876 | imm_cmd |= (unsigned long) ((operation & 1) << 23); | ||
| 877 | imm_cmd |= (unsigned long) ((pun & 7) << 20); | ||
| 878 | imm_cmd |= (unsigned long) ((ldn & 15) << 16); | ||
| 879 | break; | ||
| 880 | } | ||
| 881 | last_scsi_command(shpnt)[MAX_LOG_DEV] = IM_ASSIGN_IMM_CMD; | ||
| 882 | last_scsi_type(shpnt)[MAX_LOG_DEV] = IM_IMM_CMD; | ||
| 883 | got_interrupt(shpnt) = 0; | ||
| 884 | issue_cmd(shpnt, (unsigned long) (imm_cmd), IM_IMM_CMD | MAX_LOG_DEV); | ||
| 885 | while (!got_interrupt(shpnt)) | ||
| 886 | barrier(); | ||
| 887 | |||
| 888 | /*if command successful, break */ | ||
| 889 | if (stat_result(shpnt) == IM_IMMEDIATE_CMD_COMPLETED) | ||
| 890 | return 1; | ||
| 891 | } | ||
| 892 | if (retr >= 3) | ||
| 893 | return 0; | ||
| 894 | else | ||
| 895 | return 1; | ||
| 896 | } | ||
| 897 | |||
| 898 | static int immediate_feature(struct Scsi_Host *shpnt, unsigned int speed, unsigned int timeout) | ||
| 899 | { | ||
| 900 | int retr; | ||
| 901 | unsigned long imm_cmd; | ||
| 902 | |||
| 903 | for (retr = 0; retr < 3; retr++) { | ||
| 904 | /* select mutation level of the SCSI-adapter */ | ||
| 905 | imm_cmd = IM_FEATURE_CTR_IMM_CMD; | ||
| 906 | imm_cmd |= (unsigned long) ((speed & 0x7) << 29); | ||
| 907 | imm_cmd |= (unsigned long) ((timeout & 0x1fff) << 16); | ||
| 908 | last_scsi_command(shpnt)[MAX_LOG_DEV] = IM_FEATURE_CTR_IMM_CMD; | ||
| 909 | last_scsi_type(shpnt)[MAX_LOG_DEV] = IM_IMM_CMD; | ||
| 910 | got_interrupt(shpnt) = 0; | ||
| 911 | /* we need to run into command errors in order to probe for the | ||
| 912 | * right speed! */ | ||
| 913 | global_command_error_excuse = 1; | ||
| 914 | issue_cmd(shpnt, (unsigned long) (imm_cmd), IM_IMM_CMD | MAX_LOG_DEV); | ||
| 915 | |||
| 916 | /* FIXME: timeout */ | ||
| 917 | while (!got_interrupt(shpnt)) | ||
| 918 | barrier(); | ||
| 919 | if (global_command_error_excuse == CMD_FAIL) { | ||
| 920 | global_command_error_excuse = 0; | ||
| 921 | return 2; | ||
| 922 | } else | ||
| 923 | global_command_error_excuse = 0; | ||
| 924 | /*if command successful, break */ | ||
| 925 | if (stat_result(shpnt) == IM_IMMEDIATE_CMD_COMPLETED) | ||
| 926 | return 1; | ||
| 927 | } | ||
| 928 | if (retr >= 3) | ||
| 929 | return 0; | ||
| 930 | else | ||
| 931 | return 1; | ||
| 932 | } | ||
| 933 | |||
| 934 | #ifdef CONFIG_IBMMCA_SCSI_DEV_RESET | ||
| 935 | static int immediate_reset(struct Scsi_Host *shpnt, unsigned int ldn) | ||
| 936 | { | ||
| 937 | int retries; | ||
| 938 | int ticks; | ||
| 939 | unsigned long imm_command; | ||
| 940 | |||
| 941 | for (retries = 0; retries < 3; retries++) { | ||
| 942 | imm_command = inl(IM_CMD_REG(shpnt)); | ||
| 943 | imm_command &= (unsigned long) (0xFFFF0000); /* keep reserved bits */ | ||
| 944 | imm_command |= (unsigned long) (IM_RESET_IMM_CMD); | ||
| 945 | last_scsi_command(shpnt)[ldn] = IM_RESET_IMM_CMD; | ||
| 946 | last_scsi_type(shpnt)[ldn] = IM_IMM_CMD; | ||
| 947 | got_interrupt(shpnt) = 0; | ||
| 948 | reset_status(shpnt) = IM_RESET_IN_PROGRESS; | ||
| 949 | issue_cmd(shpnt, (unsigned long) (imm_command), IM_IMM_CMD | ldn); | ||
| 950 | ticks = IM_RESET_DELAY * HZ; | ||
| 951 | while (reset_status(shpnt) == IM_RESET_IN_PROGRESS && --ticks) { | ||
| 952 | udelay((1 + 999 / HZ) * 1000); | ||
| 953 | barrier(); | ||
| 954 | } | ||
| 955 | /* if reset did not complete, just complain */ | ||
| 956 | if (!ticks) { | ||
| 957 | printk(KERN_ERR "IBM MCA SCSI: reset did not complete within %d seconds.\n", IM_RESET_DELAY); | ||
| 958 | reset_status(shpnt) = IM_RESET_FINISHED_OK; | ||
| 959 | /* did not work, finish */ | ||
| 960 | return 1; | ||
| 961 | } | ||
| 962 | /*if command successful, break */ | ||
| 963 | if (stat_result(shpnt) == IM_IMMEDIATE_CMD_COMPLETED) | ||
| 964 | return 1; | ||
| 965 | } | ||
| 966 | if (retries >= 3) | ||
| 967 | return 0; | ||
| 968 | else | ||
| 969 | return 1; | ||
| 970 | } | ||
| 971 | #endif | ||
| 972 | |||
| 973 | /* type-interpreter for physical device numbers */ | ||
| 974 | static char *ti_p(int dev) | ||
| 975 | { | ||
| 976 | switch (dev) { | ||
| 977 | case TYPE_IBM_SCSI_ADAPTER: | ||
| 978 | return ("A"); | ||
| 979 | case TYPE_DISK: | ||
| 980 | return ("D"); | ||
| 981 | case TYPE_TAPE: | ||
| 982 | return ("T"); | ||
| 983 | case TYPE_PROCESSOR: | ||
| 984 | return ("P"); | ||
| 985 | case TYPE_WORM: | ||
| 986 | return ("W"); | ||
| 987 | case TYPE_ROM: | ||
| 988 | return ("R"); | ||
| 989 | case TYPE_SCANNER: | ||
| 990 | return ("S"); | ||
| 991 | case TYPE_MOD: | ||
| 992 | return ("M"); | ||
| 993 | case TYPE_MEDIUM_CHANGER: | ||
| 994 | return ("C"); | ||
| 995 | case TYPE_NO_LUN: | ||
| 996 | return ("+"); /* show NO_LUN */ | ||
| 997 | } | ||
| 998 | return ("-"); /* TYPE_NO_DEVICE and others */ | ||
| 999 | } | ||
| 1000 | |||
| 1001 | /* interpreter for logical device numbers (ldn) */ | ||
| 1002 | static char *ti_l(int val) | ||
| 1003 | { | ||
| 1004 | const char hex[16] = "0123456789abcdef"; | ||
| 1005 | static char answer[2]; | ||
| 1006 | |||
| 1007 | answer[1] = (char) (0x0); | ||
| 1008 | if (val <= MAX_LOG_DEV) | ||
| 1009 | answer[0] = hex[val]; | ||
| 1010 | else | ||
| 1011 | answer[0] = '-'; | ||
| 1012 | return (char *) &answer; | ||
| 1013 | } | ||
| 1014 | |||
| 1015 | /* transfers bitpattern of the feature command to values in MHz */ | ||
| 1016 | static char *ibmrate(unsigned int speed, int i) | ||
| 1017 | { | ||
| 1018 | switch (speed) { | ||
| 1019 | case 0: | ||
| 1020 | return i ? "5.00" : "10.00"; | ||
| 1021 | case 1: | ||
| 1022 | return i ? "4.00" : "8.00"; | ||
| 1023 | case 2: | ||
| 1024 | return i ? "3.33" : "6.66"; | ||
| 1025 | case 3: | ||
| 1026 | return i ? "2.86" : "5.00"; | ||
| 1027 | case 4: | ||
| 1028 | return i ? "2.50" : "4.00"; | ||
| 1029 | case 5: | ||
| 1030 | return i ? "2.22" : "3.10"; | ||
| 1031 | case 6: | ||
| 1032 | return i ? "2.00" : "2.50"; | ||
| 1033 | case 7: | ||
| 1034 | return i ? "1.82" : "2.00"; | ||
| 1035 | } | ||
| 1036 | return "---"; | ||
| 1037 | } | ||
| 1038 | |||
| 1039 | static int probe_display(int what) | ||
| 1040 | { | ||
| 1041 | static int rotator = 0; | ||
| 1042 | const char rotor[] = "|/-\\"; | ||
| 1043 | |||
| 1044 | if (!(display_mode & LED_DISP)) | ||
| 1045 | return 0; | ||
| 1046 | if (!what) { | ||
| 1047 | outl(0x20202020, MOD95_LED_PORT); | ||
| 1048 | outl(0x20202020, MOD95_LED_PORT + 4); | ||
| 1049 | } else { | ||
| 1050 | outb('S', MOD95_LED_PORT + 7); | ||
| 1051 | outb('C', MOD95_LED_PORT + 6); | ||
| 1052 | outb('S', MOD95_LED_PORT + 5); | ||
| 1053 | outb('I', MOD95_LED_PORT + 4); | ||
| 1054 | outb('i', MOD95_LED_PORT + 3); | ||
| 1055 | outb('n', MOD95_LED_PORT + 2); | ||
| 1056 | outb('i', MOD95_LED_PORT + 1); | ||
| 1057 | outb((char) (rotor[rotator]), MOD95_LED_PORT); | ||
| 1058 | rotator++; | ||
| 1059 | if (rotator > 3) | ||
| 1060 | rotator = 0; | ||
| 1061 | } | ||
| 1062 | return 0; | ||
| 1063 | } | ||
| 1064 | |||
| 1065 | static int probe_bus_mode(struct Scsi_Host *shpnt) | ||
| 1066 | { | ||
| 1067 | struct im_pos_info *info; | ||
| 1068 | int num_bus = 0; | ||
| 1069 | int ldn; | ||
| 1070 | |||
| 1071 | info = (struct im_pos_info *) (&(ld(shpnt)[MAX_LOG_DEV].buf)); | ||
| 1072 | if (get_pos_info(shpnt)) { | ||
| 1073 | if (info->connector_size & 0xf000) | ||
| 1074 | subsystem_connector_size(shpnt) = 16; | ||
| 1075 | else | ||
| 1076 | subsystem_connector_size(shpnt) = 32; | ||
| 1077 | num_bus |= (info->pos_4b & 8) >> 3; | ||
| 1078 | for (ldn = 0; ldn <= MAX_LOG_DEV; ldn++) { | ||
| 1079 | if ((special(shpnt) == IBM_SCSI_WCACHE) || (special(shpnt) == IBM_7568_WCACHE)) { | ||
| 1080 | if (!((info->cache_stat >> ldn) & 1)) | ||
| 1081 | ld(shpnt)[ldn].cache_flag = 0; | ||
| 1082 | } | ||
| 1083 | if (!((info->retry_stat >> ldn) & 1)) | ||
| 1084 | ld(shpnt)[ldn].retry_flag = 0; | ||
| 1085 | } | ||
| 1086 | #ifdef IM_DEBUG_PROBE | ||
| 1087 | printk("IBM MCA SCSI: SCSI-Cache bits: "); | ||
| 1088 | for (ldn = 0; ldn <= MAX_LOG_DEV; ldn++) { | ||
| 1089 | printk("%d", ld(shpnt)[ldn].cache_flag); | ||
| 1090 | } | ||
| 1091 | printk("\nIBM MCA SCSI: SCSI-Retry bits: "); | ||
| 1092 | for (ldn = 0; ldn <= MAX_LOG_DEV; ldn++) { | ||
| 1093 | printk("%d", ld(shpnt)[ldn].retry_flag); | ||
| 1094 | } | ||
| 1095 | printk("\n"); | ||
| 1096 | #endif | ||
| 1097 | } | ||
| 1098 | return num_bus; | ||
| 1099 | } | ||
| 1100 | |||
| 1101 | /* probing scsi devices */ | ||
| 1102 | static void check_devices(struct Scsi_Host *shpnt, int adaptertype) | ||
| 1103 | { | ||
| 1104 | int id, lun, ldn, ticks; | ||
| 1105 | int count_devices; /* local counter for connected device */ | ||
| 1106 | int max_pun; | ||
| 1107 | int num_bus; | ||
| 1108 | int speedrun; /* local adapter_speed check variable */ | ||
| 1109 | |||
| 1110 | /* assign default values to certain variables */ | ||
| 1111 | ticks = 0; | ||
| 1112 | count_devices = 0; | ||
| 1113 | IBM_DS(shpnt).dyn_flag = 0; /* normally no need for dynamical ldn management */ | ||
| 1114 | IBM_DS(shpnt).total_errors = 0; /* set errorcounter to 0 */ | ||
| 1115 | next_ldn(shpnt) = 7; /* next ldn to be assigned is 7, because 0-6 is 'hardwired' */ | ||
| 1116 | |||
| 1117 | /* initialize the very important driver-informational arrays/structs */ | ||
| 1118 | memset(ld(shpnt), 0, sizeof(ld(shpnt))); | ||
| 1119 | for (ldn = 0; ldn <= MAX_LOG_DEV; ldn++) { | ||
| 1120 | last_scsi_command(shpnt)[ldn] = NO_SCSI; /* emptify last SCSI-command storage */ | ||
| 1121 | last_scsi_type(shpnt)[ldn] = 0; | ||
| 1122 | ld(shpnt)[ldn].cache_flag = 1; | ||
| 1123 | ld(shpnt)[ldn].retry_flag = 1; | ||
| 1124 | } | ||
| 1125 | memset(get_ldn(shpnt), TYPE_NO_DEVICE, sizeof(get_ldn(shpnt))); /* this is essential ! */ | ||
| 1126 | memset(get_scsi(shpnt), TYPE_NO_DEVICE, sizeof(get_scsi(shpnt))); /* this is essential ! */ | ||
| 1127 | for (lun = 0; lun < 8; lun++) { | ||
| 1128 | /* mark the adapter at its pun on all luns */ | ||
| 1129 | get_scsi(shpnt)[subsystem_pun(shpnt)][lun] = TYPE_IBM_SCSI_ADAPTER; | ||
| 1130 | get_ldn(shpnt)[subsystem_pun(shpnt)][lun] = MAX_LOG_DEV; /* make sure, the subsystem | ||
| 1131 | ldn is active for all | ||
| 1132 | luns. */ | ||
| 1133 | } | ||
| 1134 | probe_display(0); /* Supercool display usage during SCSI-probing. */ | ||
| 1135 | /* This makes sense, when booting without any */ | ||
| 1136 | /* monitor connected on model XX95. */ | ||
| 1137 | |||
| 1138 | /* STEP 1: */ | ||
| 1139 | adapter_speed(shpnt) = global_adapter_speed; | ||
| 1140 | speedrun = adapter_speed(shpnt); | ||
| 1141 | while (immediate_feature(shpnt, speedrun, adapter_timeout) == 2) { | ||
| 1142 | probe_display(1); | ||
| 1143 | if (speedrun == 7) | ||
| 1144 | panic("IBM MCA SCSI: Cannot set Synchronous-Transfer-Rate!\n"); | ||
| 1145 | speedrun++; | ||
| 1146 | if (speedrun > 7) | ||
| 1147 | speedrun = 7; | ||
| 1148 | } | ||
| 1149 | adapter_speed(shpnt) = speedrun; | ||
| 1150 | /* Get detailed information about the current adapter, necessary for | ||
| 1151 | * device operations: */ | ||
| 1152 | num_bus = probe_bus_mode(shpnt); | ||
| 1153 | |||
| 1154 | /* num_bus contains only valid data for the F/W adapter! */ | ||
| 1155 | if (adaptertype == IBM_SCSI2_FW) { /* F/W SCSI adapter: */ | ||
| 1156 | /* F/W adapter PUN-space extension evaluation: */ | ||
| 1157 | if (num_bus) { | ||
| 1158 | printk(KERN_INFO "IBM MCA SCSI: Separate bus mode (wide-addressing enabled)\n"); | ||
| 1159 | subsystem_maxid(shpnt) = 16; | ||
| 1160 | } else { | ||
| 1161 | printk(KERN_INFO "IBM MCA SCSI: Combined bus mode (wide-addressing disabled)\n"); | ||
| 1162 | subsystem_maxid(shpnt) = 8; | ||
| 1163 | } | ||
| 1164 | printk(KERN_INFO "IBM MCA SCSI: Sync.-Rate (F/W: 20, Int.: 10, Ext.: %s) MBytes/s\n", ibmrate(speedrun, adaptertype)); | ||
| 1165 | } else /* all other IBM SCSI adapters: */ | ||
| 1166 | printk(KERN_INFO "IBM MCA SCSI: Synchronous-SCSI-Transfer-Rate: %s MBytes/s\n", ibmrate(speedrun, adaptertype)); | ||
| 1167 | |||
| 1168 | /* assign correct PUN device space */ | ||
| 1169 | max_pun = subsystem_maxid(shpnt); | ||
| 1170 | |||
| 1171 | #ifdef IM_DEBUG_PROBE | ||
| 1172 | printk("IBM MCA SCSI: Current SCSI-host index: %d\n", shpnt); | ||
| 1173 | printk("IBM MCA SCSI: Removing default logical SCSI-device mapping."); | ||
| 1174 | #else | ||
| 1175 | printk(KERN_INFO "IBM MCA SCSI: Dev. Order: %s, Mapping (takes <2min): ", (ibm_ansi_order) ? "ANSI" : "New"); | ||
| 1176 | #endif | ||
| 1177 | for (ldn = 0; ldn < MAX_LOG_DEV; ldn++) { | ||
| 1178 | probe_display(1); | ||
| 1179 | #ifdef IM_DEBUG_PROBE | ||
| 1180 | printk("."); | ||
| 1181 | #endif | ||
| 1182 | immediate_assign(shpnt, 0, 0, ldn, REMOVE_LDN); /* remove ldn (wherever) */ | ||
| 1183 | } | ||
| 1184 | lun = 0; /* default lun is 0 */ | ||
| 1185 | #ifndef IM_DEBUG_PROBE | ||
| 1186 | printk("cleared,"); | ||
| 1187 | #endif | ||
| 1188 | /* STEP 2: */ | ||
| 1189 | #ifdef IM_DEBUG_PROBE | ||
| 1190 | printk("\nIBM MCA SCSI: Scanning SCSI-devices."); | ||
| 1191 | #endif | ||
| 1192 | for (id = 0; id < max_pun; id++) | ||
| 1193 | #ifdef CONFIG_SCSI_MULTI_LUN | ||
| 1194 | for (lun = 0; lun < 8; lun++) | ||
| 1195 | #endif | ||
| 1196 | { | ||
| 1197 | probe_display(1); | ||
| 1198 | #ifdef IM_DEBUG_PROBE | ||
| 1199 | printk("."); | ||
| 1200 | #endif | ||
| 1201 | if (id != subsystem_pun(shpnt)) { | ||
| 1202 | /* if pun is not the adapter: */ | ||
| 1203 | /* set ldn=0 to pun,lun */ | ||
| 1204 | immediate_assign(shpnt, id, lun, PROBE_LDN, SET_LDN); | ||
| 1205 | if (device_inquiry(shpnt, PROBE_LDN)) { /* probe device */ | ||
| 1206 | get_scsi(shpnt)[id][lun] = (unsigned char) (ld(shpnt)[PROBE_LDN].buf[0]); | ||
| 1207 | /* entry, even for NO_LUN */ | ||
| 1208 | if (ld(shpnt)[PROBE_LDN].buf[0] != TYPE_NO_LUN) | ||
| 1209 | count_devices++; /* a existing device is found */ | ||
| 1210 | } | ||
| 1211 | /* remove ldn */ | ||
| 1212 | immediate_assign(shpnt, id, lun, PROBE_LDN, REMOVE_LDN); | ||
| 1213 | } | ||
| 1214 | } | ||
| 1215 | #ifndef IM_DEBUG_PROBE | ||
| 1216 | printk("scanned,"); | ||
| 1217 | #endif | ||
| 1218 | /* STEP 3: */ | ||
| 1219 | #ifdef IM_DEBUG_PROBE | ||
| 1220 | printk("\nIBM MCA SCSI: Mapping SCSI-devices."); | ||
| 1221 | #endif | ||
| 1222 | ldn = 0; | ||
| 1223 | lun = 0; | ||
| 1224 | #ifdef CONFIG_SCSI_MULTI_LUN | ||
| 1225 | for (lun = 0; lun < 8 && ldn < MAX_LOG_DEV; lun++) | ||
| 1226 | #endif | ||
| 1227 | for (id = 0; id < max_pun && ldn < MAX_LOG_DEV; id++) { | ||
| 1228 | probe_display(1); | ||
| 1229 | #ifdef IM_DEBUG_PROBE | ||
| 1230 | printk("."); | ||
| 1231 | #endif | ||
| 1232 | if (id != subsystem_pun(shpnt)) { | ||
| 1233 | if (get_scsi(shpnt)[id][lun] != TYPE_NO_LUN && get_scsi(shpnt)[id][lun] != TYPE_NO_DEVICE) { | ||
| 1234 | /* Only map if accepted type. Always enter for | ||
| 1235 | lun == 0 to get no gaps into ldn-mapping for ldn<7. */ | ||
| 1236 | immediate_assign(shpnt, id, lun, ldn, SET_LDN); | ||
| 1237 | get_ldn(shpnt)[id][lun] = ldn; /* map ldn */ | ||
| 1238 | if (device_exists(shpnt, ldn, &ld(shpnt)[ldn].block_length, &ld(shpnt)[ldn].device_type)) { | ||
| 1239 | #ifdef CONFIG_IBMMCA_SCSI_DEV_RESET | ||
| 1240 | printk("resetting device at ldn=%x ... ", ldn); | ||
| 1241 | immediate_reset(shpnt, ldn); | ||
| 1242 | #endif | ||
| 1243 | ldn++; | ||
| 1244 | } else { | ||
| 1245 | /* device vanished, probably because we don't know how to | ||
| 1246 | * handle it or because it has problems */ | ||
| 1247 | if (lun > 0) { | ||
| 1248 | /* remove mapping */ | ||
| 1249 | get_ldn(shpnt)[id][lun] = TYPE_NO_DEVICE; | ||
| 1250 | immediate_assign(shpnt, 0, 0, ldn, REMOVE_LDN); | ||
| 1251 | } else | ||
| 1252 | ldn++; | ||
| 1253 | } | ||
| 1254 | } else if (lun == 0) { | ||
| 1255 | /* map lun == 0, even if no device exists */ | ||
| 1256 | immediate_assign(shpnt, id, lun, ldn, SET_LDN); | ||
| 1257 | get_ldn(shpnt)[id][lun] = ldn; /* map ldn */ | ||
| 1258 | ldn++; | ||
| 1259 | } | ||
| 1260 | } | ||
| 1261 | } | ||
| 1262 | /* STEP 4: */ | ||
| 1263 | |||
| 1264 | /* map remaining ldns to non-existing devices */ | ||
| 1265 | for (lun = 1; lun < 8 && ldn < MAX_LOG_DEV; lun++) | ||
| 1266 | for (id = 0; id < max_pun && ldn < MAX_LOG_DEV; id++) { | ||
| 1267 | if (get_scsi(shpnt)[id][lun] == TYPE_NO_LUN || get_scsi(shpnt)[id][lun] == TYPE_NO_DEVICE) { | ||
| 1268 | probe_display(1); | ||
| 1269 | /* Map remaining ldns only to NON-existing pun,lun | ||
| 1270 | combinations to make sure an inquiry will fail. | ||
| 1271 | For MULTI_LUN, it is needed to avoid adapter autonome | ||
| 1272 | SCSI-remapping. */ | ||
| 1273 | immediate_assign(shpnt, id, lun, ldn, SET_LDN); | ||
| 1274 | get_ldn(shpnt)[id][lun] = ldn; | ||
| 1275 | ldn++; | ||
| 1276 | } | ||
| 1277 | } | ||
| 1278 | #ifndef IM_DEBUG_PROBE | ||
| 1279 | printk("mapped."); | ||
| 1280 | #endif | ||
| 1281 | printk("\n"); | ||
| 1282 | #ifdef IM_DEBUG_PROBE | ||
| 1283 | if (ibm_ansi_order) | ||
| 1284 | printk("IBM MCA SCSI: Device order: IBM/ANSI (pun=7 is first).\n"); | ||
| 1285 | else | ||
| 1286 | printk("IBM MCA SCSI: Device order: New Industry Standard (pun=0 is first).\n"); | ||
| 1287 | #endif | ||
| 1288 | |||
| 1289 | #ifdef IM_DEBUG_PROBE | ||
| 1290 | /* Show the physical and logical mapping during boot. */ | ||
| 1291 | printk("IBM MCA SCSI: Determined SCSI-device-mapping:\n"); | ||
| 1292 | printk(" Physical SCSI-Device Map Logical SCSI-Device Map\n"); | ||
| 1293 | printk("ID\\LUN 0 1 2 3 4 5 6 7 ID\\LUN 0 1 2 3 4 5 6 7\n"); | ||
| 1294 | for (id = 0; id < max_pun; id++) { | ||
| 1295 | printk("%2d ", id); | ||
| 1296 | for (lun = 0; lun < 8; lun++) | ||
| 1297 | printk("%2s ", ti_p(get_scsi(shpnt)[id][lun])); | ||
| 1298 | printk(" %2d ", id); | ||
| 1299 | for (lun = 0; lun < 8; lun++) | ||
| 1300 | printk("%2s ", ti_l(get_ldn(shpnt)[id][lun])); | ||
| 1301 | printk("\n"); | ||
| 1302 | } | ||
| 1303 | #endif | ||
| 1304 | |||
| 1305 | /* assign total number of found SCSI-devices to the statistics struct */ | ||
| 1306 | IBM_DS(shpnt).total_scsi_devices = count_devices; | ||
| 1307 | |||
| 1308 | /* decide for output in /proc-filesystem, if the configuration of | ||
| 1309 | SCSI-devices makes dynamical reassignment of devices necessary */ | ||
| 1310 | if (count_devices >= MAX_LOG_DEV) | ||
| 1311 | IBM_DS(shpnt).dyn_flag = 1; /* dynamical assignment is necessary */ | ||
| 1312 | else | ||
| 1313 | IBM_DS(shpnt).dyn_flag = 0; /* dynamical assignment is not necessary */ | ||
| 1314 | |||
| 1315 | /* If no SCSI-devices are assigned, return 1 in order to cause message. */ | ||
| 1316 | if (ldn == 0) | ||
| 1317 | printk("IBM MCA SCSI: Warning: No SCSI-devices found/assigned!\n"); | ||
| 1318 | |||
| 1319 | /* reset the counters for statistics on the current adapter */ | ||
| 1320 | IBM_DS(shpnt).scbs = 0; | ||
| 1321 | IBM_DS(shpnt).long_scbs = 0; | ||
| 1322 | IBM_DS(shpnt).total_accesses = 0; | ||
| 1323 | IBM_DS(shpnt).total_interrupts = 0; | ||
| 1324 | IBM_DS(shpnt).dynamical_assignments = 0; | ||
| 1325 | memset(IBM_DS(shpnt).ldn_access, 0x0, sizeof(IBM_DS(shpnt).ldn_access)); | ||
| 1326 | memset(IBM_DS(shpnt).ldn_read_access, 0x0, sizeof(IBM_DS(shpnt).ldn_read_access)); | ||
| 1327 | memset(IBM_DS(shpnt).ldn_write_access, 0x0, sizeof(IBM_DS(shpnt).ldn_write_access)); | ||
| 1328 | memset(IBM_DS(shpnt).ldn_inquiry_access, 0x0, sizeof(IBM_DS(shpnt).ldn_inquiry_access)); | ||
| 1329 | memset(IBM_DS(shpnt).ldn_modeselect_access, 0x0, sizeof(IBM_DS(shpnt).ldn_modeselect_access)); | ||
| 1330 | memset(IBM_DS(shpnt).ldn_assignments, 0x0, sizeof(IBM_DS(shpnt).ldn_assignments)); | ||
| 1331 | probe_display(0); | ||
| 1332 | return; | ||
| 1333 | } | ||
| 1334 | |||
| 1335 | static int device_exists(struct Scsi_Host *shpnt, int ldn, int *block_length, int *device_type) | ||
| 1336 | { | ||
| 1337 | unsigned char *buf; | ||
| 1338 | /* if no valid device found, return immediately with 0 */ | ||
| 1339 | if (!(device_inquiry(shpnt, ldn))) | ||
| 1340 | return 0; | ||
| 1341 | buf = (unsigned char *) (&(ld(shpnt)[ldn].buf)); | ||
| 1342 | if (*buf == TYPE_ROM) { | ||
| 1343 | *device_type = TYPE_ROM; | ||
| 1344 | *block_length = 2048; /* (standard blocksize for yellow-/red-book) */ | ||
| 1345 | return 1; | ||
| 1346 | } | ||
| 1347 | if (*buf == TYPE_WORM) { | ||
| 1348 | *device_type = TYPE_WORM; | ||
| 1349 | *block_length = 2048; | ||
| 1350 | return 1; | ||
| 1351 | } | ||
| 1352 | if (*buf == TYPE_DISK) { | ||
| 1353 | *device_type = TYPE_DISK; | ||
| 1354 | if (read_capacity(shpnt, ldn)) { | ||
| 1355 | *block_length = *(buf + 7) + (*(buf + 6) << 8) + (*(buf + 5) << 16) + (*(buf + 4) << 24); | ||
| 1356 | return 1; | ||
| 1357 | } else | ||
| 1358 | return 0; | ||
| 1359 | } | ||
| 1360 | if (*buf == TYPE_MOD) { | ||
| 1361 | *device_type = TYPE_MOD; | ||
| 1362 | if (read_capacity(shpnt, ldn)) { | ||
| 1363 | *block_length = *(buf + 7) + (*(buf + 6) << 8) + (*(buf + 5) << 16) + (*(buf + 4) << 24); | ||
| 1364 | return 1; | ||
| 1365 | } else | ||
| 1366 | return 0; | ||
| 1367 | } | ||
| 1368 | if (*buf == TYPE_TAPE) { | ||
| 1369 | *device_type = TYPE_TAPE; | ||
| 1370 | *block_length = 0; /* not in use (setting by mt and mtst in op.) */ | ||
| 1371 | return 1; | ||
| 1372 | } | ||
| 1373 | if (*buf == TYPE_PROCESSOR) { | ||
| 1374 | *device_type = TYPE_PROCESSOR; | ||
| 1375 | *block_length = 0; /* they set their stuff on drivers */ | ||
| 1376 | return 1; | ||
| 1377 | } | ||
| 1378 | if (*buf == TYPE_SCANNER) { | ||
| 1379 | *device_type = TYPE_SCANNER; | ||
| 1380 | *block_length = 0; /* they set their stuff on drivers */ | ||
| 1381 | return 1; | ||
| 1382 | } | ||
| 1383 | if (*buf == TYPE_MEDIUM_CHANGER) { | ||
| 1384 | *device_type = TYPE_MEDIUM_CHANGER; | ||
| 1385 | *block_length = 0; /* One never knows, what to expect on a medium | ||
| 1386 | changer device. */ | ||
| 1387 | return 1; | ||
| 1388 | } | ||
| 1389 | return 0; | ||
| 1390 | } | ||
| 1391 | |||
| 1392 | static void internal_ibmmca_scsi_setup(char *str, int *ints) | ||
| 1393 | { | ||
| 1394 | int i, j, io_base, id_base; | ||
| 1395 | char *token; | ||
| 1396 | |||
| 1397 | io_base = 0; | ||
| 1398 | id_base = 0; | ||
| 1399 | if (str) { | ||
| 1400 | j = 0; | ||
| 1401 | while ((token = strsep(&str, ",")) != NULL) { | ||
| 1402 | if (!strcmp(token, "activity")) | ||
| 1403 | display_mode |= LED_ACTIVITY; | ||
| 1404 | if (!strcmp(token, "display")) | ||
| 1405 | display_mode |= LED_DISP; | ||
| 1406 | if (!strcmp(token, "adisplay")) | ||
| 1407 | display_mode |= LED_ADISP; | ||
| 1408 | if (!strcmp(token, "normal")) | ||
| 1409 | ibm_ansi_order = 0; | ||
| 1410 | if (!strcmp(token, "ansi")) | ||
| 1411 | ibm_ansi_order = 1; | ||
| 1412 | if (!strcmp(token, "fast")) | ||
| 1413 | global_adapter_speed = 0; | ||
| 1414 | if (!strcmp(token, "medium")) | ||
| 1415 | global_adapter_speed = 4; | ||
| 1416 | if (!strcmp(token, "slow")) | ||
| 1417 | global_adapter_speed = 7; | ||
| 1418 | if ((*token == '-') || (isdigit(*token))) { | ||
| 1419 | if (!(j % 2) && (io_base < IM_MAX_HOSTS)) | ||
| 1420 | io_port[io_base++] = simple_strtoul(token, NULL, 0); | ||
| 1421 | if ((j % 2) && (id_base < IM_MAX_HOSTS)) | ||
| 1422 | scsi_id[id_base++] = simple_strtoul(token, NULL, 0); | ||
| 1423 | j++; | ||
| 1424 | } | ||
| 1425 | } | ||
| 1426 | } else if (ints) { | ||
| 1427 | for (i = 0; i < IM_MAX_HOSTS && 2 * i + 2 < ints[0]; i++) { | ||
| 1428 | io_port[i] = ints[2 * i + 2]; | ||
| 1429 | scsi_id[i] = ints[2 * i + 2]; | ||
| 1430 | } | ||
| 1431 | } | ||
| 1432 | return; | ||
| 1433 | } | ||
| 1434 | |||
| 1435 | #if 0 | ||
| 1436 | FIXME NEED TO MOVE TO SYSFS | ||
| 1437 | |||
| 1438 | static int ibmmca_getinfo(char *buf, int slot, void *dev_id) | ||
| 1439 | { | ||
| 1440 | struct Scsi_Host *shpnt; | ||
| 1441 | int len, speciale, connectore, k; | ||
| 1442 | unsigned int pos[8]; | ||
| 1443 | unsigned long flags; | ||
| 1444 | struct Scsi_Host *dev = dev_id; | ||
| 1445 | |||
| 1446 | spin_lock_irqsave(dev->host_lock, flags); | ||
| 1447 | |||
| 1448 | shpnt = dev; /* assign host-structure to local pointer */ | ||
| 1449 | len = 0; /* set filled text-buffer index to 0 */ | ||
| 1450 | /* get the _special contents of the hostdata structure */ | ||
| 1451 | speciale = ((struct ibmmca_hostdata *) shpnt->hostdata)->_special; | ||
| 1452 | connectore = ((struct ibmmca_hostdata *) shpnt->hostdata)->_connector_size; | ||
| 1453 | for (k = 2; k < 4; k++) | ||
| 1454 | pos[k] = ((struct ibmmca_hostdata *) shpnt->hostdata)->_pos[k]; | ||
| 1455 | if (speciale == FORCED_DETECTION) { /* forced detection */ | ||
| 1456 | len += sprintf(buf + len, | ||
| 1457 | "Adapter category: forced detected\n" "***************************************\n" "*** Forced detected SCSI Adapter ***\n" "*** No chip-information available ***\n" "***************************************\n"); | ||
| 1458 | } else if (speciale == INTEGRATED_SCSI) { | ||
| 1459 | /* if the integrated subsystem has been found automatically: */ | ||
| 1460 | len += sprintf(buf + len, | ||
| 1461 | "Adapter category: integrated\n" "Chip revision level: %d\n" "Chip status: %s\n" "8 kByte NVRAM status: %s\n", ((pos[2] & 0xf0) >> 4), (pos[2] & 1) ? "enabled" : "disabled", (pos[2] & 2) ? "locked" : "accessible"); | ||
| 1462 | } else if ((speciale >= 0) && (speciale < ARRAY_SIZE(subsys_list))) { | ||
| 1463 | /* if the subsystem is a slot adapter */ | ||
| 1464 | len += sprintf(buf + len, "Adapter category: slot-card\n" "ROM Segment Address: "); | ||
| 1465 | if ((pos[2] & 0xf0) == 0xf0) | ||
| 1466 | len += sprintf(buf + len, "off\n"); | ||
| 1467 | else | ||
| 1468 | len += sprintf(buf + len, "0x%x\n", ((pos[2] & 0xf0) << 13) + 0xc0000); | ||
| 1469 | len += sprintf(buf + len, "Chip status: %s\n", (pos[2] & 1) ? "enabled" : "disabled"); | ||
| 1470 | len += sprintf(buf + len, "Adapter I/O Offset: 0x%x\n", ((pos[2] & 0x0e) << 2)); | ||
| 1471 | } else { | ||
| 1472 | len += sprintf(buf + len, "Adapter category: unknown\n"); | ||
| 1473 | } | ||
| 1474 | /* common subsystem information to write to the slotn file */ | ||
| 1475 | len += sprintf(buf + len, "Subsystem PUN: %d\n", shpnt->this_id); | ||
| 1476 | len += sprintf(buf + len, "I/O base address range: 0x%x-0x%x\n", (unsigned int) (shpnt->io_port), (unsigned int) (shpnt->io_port + 7)); | ||
| 1477 | len += sprintf(buf + len, "MCA-slot size: %d bits", connectore); | ||
| 1478 | /* Now make sure, the bufferlength is devidable by 4 to avoid | ||
| 1479 | * paging problems of the buffer. */ | ||
| 1480 | while (len % sizeof(int) != (sizeof(int) - 1)) | ||
| 1481 | len += sprintf(buf + len, " "); | ||
| 1482 | len += sprintf(buf + len, "\n"); | ||
| 1483 | |||
| 1484 | spin_unlock_irqrestore(shpnt->host_lock, flags); | ||
| 1485 | |||
| 1486 | return len; | ||
| 1487 | } | ||
| 1488 | #endif | ||
| 1489 | |||
| 1490 | static struct scsi_host_template ibmmca_driver_template = { | ||
| 1491 | .proc_name = "ibmmca", | ||
| 1492 | .proc_info = ibmmca_proc_info, | ||
| 1493 | .name = "IBM SCSI-Subsystem", | ||
| 1494 | .queuecommand = ibmmca_queuecommand, | ||
| 1495 | .eh_abort_handler = ibmmca_abort, | ||
| 1496 | .eh_host_reset_handler = ibmmca_host_reset, | ||
| 1497 | .bios_param = ibmmca_biosparam, | ||
| 1498 | .can_queue = 16, | ||
| 1499 | .this_id = 7, | ||
| 1500 | .sg_tablesize = 16, | ||
| 1501 | .cmd_per_lun = 1, | ||
| 1502 | .use_clustering = ENABLE_CLUSTERING, | ||
| 1503 | }; | ||
| 1504 | |||
| 1505 | static int ibmmca_probe(struct device *dev) | ||
| 1506 | { | ||
| 1507 | struct Scsi_Host *shpnt; | ||
| 1508 | int port, id, i, j, k, irq, enabled, ret = -EINVAL; | ||
| 1509 | struct mca_device *mca_dev = to_mca_device(dev); | ||
| 1510 | const char *description = ibmmca_description[mca_dev->index]; | ||
| 1511 | |||
| 1512 | /* First of all, print the version number of the driver. This is | ||
| 1513 | * important to allow better user bugreports in case of already | ||
| 1514 | * having problems with the MCA_bus probing. */ | ||
| 1515 | printk(KERN_INFO "IBM MCA SCSI: Version %s\n", IBMMCA_SCSI_DRIVER_VERSION); | ||
| 1516 | /* The POS2-register of all PS/2 model SCSI-subsystems has the following | ||
| 1517 | * interpretation of bits: | ||
| 1518 | * Bit 7 - 4 : Chip Revision ID (Release) | ||
| 1519 | * Bit 3 - 2 : Reserved | ||
| 1520 | * Bit 1 : 8k NVRAM Disabled | ||
| 1521 | * Bit 0 : Chip Enable (EN-Signal) | ||
| 1522 | * The POS3-register is interpreted as follows: | ||
| 1523 | * Bit 7 - 5 : SCSI ID | ||
| 1524 | * Bit 4 : Reserved = 0 | ||
| 1525 | * Bit 3 - 0 : Reserved = 0 | ||
| 1526 | * (taken from "IBM, PS/2 Hardware Interface Technical Reference, Common | ||
| 1527 | * Interfaces (1991)"). | ||
| 1528 | * In short words, this means, that IBM PS/2 machines only support | ||
| 1529 | * 1 single subsystem by default. The slot-adapters must have another | ||
| 1530 | * configuration on pos2. Here, one has to assume the following | ||
| 1531 | * things for POS2-register: | ||
| 1532 | * Bit 7 - 4 : Chip Revision ID (Release) | ||
| 1533 | * Bit 3 - 1 : port offset factor | ||
| 1534 | * Bit 0 : Chip Enable (EN-Signal) | ||
| 1535 | * As I found a patch here, setting the IO-registers to 0x3540 forced, | ||
| 1536 | * as there was a 0x05 in POS2 on a model 56, I assume, that the | ||
| 1537 | * port 0x3540 must be fix for integrated SCSI-controllers. | ||
| 1538 | * Ok, this discovery leads to the following implementation: (M.Lang) */ | ||
| 1539 | |||
| 1540 | /* first look for the IBM SCSI integrated subsystem on the motherboard */ | ||
| 1541 | for (j = 0; j < 8; j++) /* read the pos-information */ | ||
| 1542 | pos[j] = mca_device_read_pos(mca_dev, j); | ||
| 1543 | id = (pos[3] & 0xe0) >> 5; /* this is correct and represents the PUN */ | ||
| 1544 | enabled = (pos[2] &0x01); | ||
| 1545 | if (!enabled) { | ||
| 1546 | printk(KERN_WARNING "IBM MCA SCSI: WARNING - Your SCSI-subsystem is disabled!\n"); | ||
| 1547 | printk(KERN_WARNING " SCSI-operations may not work.\n"); | ||
| 1548 | } | ||
| 1549 | |||
| 1550 | /* pos2 = pos3 = 0xff if there is no integrated SCSI-subsystem present, but | ||
| 1551 | * if we ignore the settings of all surrounding pos registers, it is not | ||
| 1552 | * completely sufficient to only check pos2 and pos3. */ | ||
| 1553 | /* Therefore, now the following if statement is used to | ||
| 1554 | * make sure, we see a real integrated onboard SCSI-interface and no | ||
| 1555 | * internal system information, which gets mapped to some pos registers | ||
| 1556 | * on models 95xx. */ | ||
| 1557 | if (mca_dev->slot == MCA_INTEGSCSI && | ||
| 1558 | ((!pos[0] && !pos[1] && pos[2] > 0 && | ||
| 1559 | pos[3] > 0 && !pos[4] && !pos[5] && | ||
| 1560 | !pos[6] && !pos[7]) || | ||
| 1561 | (pos[0] == 0xff && pos[1] == 0xff && | ||
| 1562 | pos[2] < 0xff && pos[3] < 0xff && | ||
| 1563 | pos[4] == 0xff && pos[5] == 0xff && | ||
| 1564 | pos[6] == 0xff && pos[7] == 0xff))) { | ||
| 1565 | irq = IM_IRQ; | ||
| 1566 | port = IM_IO_PORT; | ||
| 1567 | } else { | ||
| 1568 | irq = IM_IRQ; | ||
| 1569 | port = IM_IO_PORT + ((pos[2] &0x0e) << 2); | ||
| 1570 | if ((mca_dev->index == IBM_SCSI2_FW) && (pos[6] != 0)) { | ||
| 1571 | printk(KERN_ERR "IBM MCA SCSI: ERROR - Wrong POS(6)-register setting!\n"); | ||
| 1572 | printk(KERN_ERR " Impossible to determine adapter PUN!\n"); | ||
| 1573 | printk(KERN_ERR " Guessing adapter PUN = 7.\n"); | ||
| 1574 | id = 7; | ||
| 1575 | } else { | ||
| 1576 | id = (pos[3] & 0xe0) >> 5; /* get subsystem PUN */ | ||
| 1577 | if (mca_dev->index == IBM_SCSI2_FW) { | ||
| 1578 | id |= (pos[3] & 0x10) >> 1; /* get subsystem PUN high-bit | ||
| 1579 | * for F/W adapters */ | ||
| 1580 | } | ||
| 1581 | } | ||
| 1582 | if ((mca_dev->index == IBM_SCSI2_FW) && | ||
| 1583 | (pos[4] & 0x01) && (pos[6] == 0)) { | ||
| 1584 | /* IRQ11 is used by SCSI-2 F/W Adapter/A */ | ||
| 1585 | printk(KERN_DEBUG "IBM MCA SCSI: SCSI-2 F/W adapter needs IRQ 11.\n"); | ||
| 1586 | irq = IM_IRQ_FW; | ||
| 1587 | } | ||
| 1588 | } | ||
| 1589 | |||
| 1590 | |||
| 1591 | |||
| 1592 | /* give detailed information on the subsystem. This helps me | ||
| 1593 | * additionally during debugging and analyzing bug-reports. */ | ||
| 1594 | printk(KERN_INFO "IBM MCA SCSI: %s found, io=0x%x, scsi id=%d,\n", | ||
| 1595 | description, port, id); | ||
| 1596 | if (mca_dev->slot == MCA_INTEGSCSI) | ||
| 1597 | printk(KERN_INFO " chip rev.=%d, 8K NVRAM=%s, subsystem=%s\n", ((pos[2] & 0xf0) >> 4), (pos[2] & 2) ? "locked" : "accessible", (pos[2] & 1) ? "enabled." : "disabled."); | ||
| 1598 | else { | ||
| 1599 | if ((pos[2] & 0xf0) == 0xf0) | ||
| 1600 | printk(KERN_DEBUG " ROM Addr.=off,"); | ||
| 1601 | else | ||
| 1602 | printk(KERN_DEBUG " ROM Addr.=0x%x,", ((pos[2] & 0xf0) << 13) + 0xc0000); | ||
| 1603 | |||
| 1604 | printk(KERN_DEBUG " port-offset=0x%x, subsystem=%s\n", ((pos[2] & 0x0e) << 2), (pos[2] & 1) ? "enabled." : "disabled."); | ||
| 1605 | } | ||
| 1606 | |||
| 1607 | /* check I/O region */ | ||
| 1608 | if (!request_region(port, IM_N_IO_PORT, description)) { | ||
| 1609 | printk(KERN_ERR "IBM MCA SCSI: Unable to get I/O region 0x%x-0x%x (%d ports).\n", port, port + IM_N_IO_PORT - 1, IM_N_IO_PORT); | ||
| 1610 | goto out_fail; | ||
| 1611 | } | ||
| 1612 | |||
| 1613 | /* register host */ | ||
| 1614 | shpnt = scsi_host_alloc(&ibmmca_driver_template, | ||
| 1615 | sizeof(struct ibmmca_hostdata)); | ||
| 1616 | if (!shpnt) { | ||
| 1617 | printk(KERN_ERR "IBM MCA SCSI: Unable to register host.\n"); | ||
| 1618 | goto out_release; | ||
| 1619 | } | ||
| 1620 | |||
| 1621 | dev_set_drvdata(dev, shpnt); | ||
| 1622 | if(request_irq(irq, interrupt_handler, IRQF_SHARED, description, dev)) { | ||
| 1623 | printk(KERN_ERR "IBM MCA SCSI: failed to request interrupt %d\n", irq); | ||
| 1624 | goto out_free_host; | ||
| 1625 | } | ||
| 1626 | |||
| 1627 | /* request I/O region */ | ||
| 1628 | special(shpnt) = mca_dev->index; /* important assignment or else crash! */ | ||
| 1629 | subsystem_connector_size(shpnt) = 0; /* preset slot-size */ | ||
| 1630 | shpnt->irq = irq; /* assign necessary stuff for the adapter */ | ||
| 1631 | shpnt->io_port = port; | ||
| 1632 | shpnt->n_io_port = IM_N_IO_PORT; | ||
| 1633 | shpnt->this_id = id; | ||
| 1634 | shpnt->max_id = 8; /* 8 PUNs are default */ | ||
| 1635 | /* now, the SCSI-subsystem is connected to Linux */ | ||
| 1636 | |||
| 1637 | #ifdef IM_DEBUG_PROBE | ||
| 1638 | ctrl = (unsigned int) (inb(IM_CTR_REG(found))); /* get control-register status */ | ||
| 1639 | printk("IBM MCA SCSI: Control Register contents: %x, status: %x\n", ctrl, inb(IM_STAT_REG(found))); | ||
| 1640 | printk("IBM MCA SCSI: This adapters' POS-registers: "); | ||
| 1641 | for (i = 0; i < 8; i++) | ||
| 1642 | printk("%x ", pos[i]); | ||
| 1643 | printk("\n"); | ||
| 1644 | #endif | ||
| 1645 | reset_status(shpnt) = IM_RESET_NOT_IN_PROGRESS; | ||
| 1646 | |||
| 1647 | for (i = 0; i < 16; i++) /* reset the tables */ | ||
| 1648 | for (j = 0; j < 8; j++) | ||
| 1649 | get_ldn(shpnt)[i][j] = MAX_LOG_DEV; | ||
| 1650 | |||
| 1651 | /* check which logical devices exist */ | ||
| 1652 | /* after this line, local interrupting is possible: */ | ||
| 1653 | local_checking_phase_flag(shpnt) = 1; | ||
| 1654 | check_devices(shpnt, mca_dev->index); /* call by value, using the global variable hosts */ | ||
| 1655 | local_checking_phase_flag(shpnt) = 0; | ||
| 1656 | |||
| 1657 | /* an ibm mca subsystem has been detected */ | ||
| 1658 | |||
| 1659 | for (k = 2; k < 7; k++) | ||
| 1660 | ((struct ibmmca_hostdata *) shpnt->hostdata)->_pos[k] = pos[k]; | ||
| 1661 | ((struct ibmmca_hostdata *) shpnt->hostdata)->_special = INTEGRATED_SCSI; | ||
| 1662 | mca_device_set_name(mca_dev, description); | ||
| 1663 | /* FIXME: NEED TO REPLUMB TO SYSFS | ||
| 1664 | mca_set_adapter_procfn(MCA_INTEGSCSI, (MCA_ProcFn) ibmmca_getinfo, shpnt); | ||
| 1665 | */ | ||
| 1666 | mca_device_set_claim(mca_dev, 1); | ||
| 1667 | if (scsi_add_host(shpnt, dev)) { | ||
| 1668 | dev_printk(KERN_ERR, dev, "IBM MCA SCSI: scsi_add_host failed\n"); | ||
| 1669 | goto out_free_host; | ||
| 1670 | } | ||
| 1671 | scsi_scan_host(shpnt); | ||
| 1672 | |||
| 1673 | return 0; | ||
| 1674 | out_free_host: | ||
| 1675 | scsi_host_put(shpnt); | ||
| 1676 | out_release: | ||
| 1677 | release_region(port, IM_N_IO_PORT); | ||
| 1678 | out_fail: | ||
| 1679 | return ret; | ||
| 1680 | } | ||
| 1681 | |||
| 1682 | static int __devexit ibmmca_remove(struct device *dev) | ||
| 1683 | { | ||
| 1684 | struct Scsi_Host *shpnt = dev_get_drvdata(dev); | ||
| 1685 | scsi_remove_host(shpnt); | ||
| 1686 | release_region(shpnt->io_port, shpnt->n_io_port); | ||
| 1687 | free_irq(shpnt->irq, dev); | ||
| 1688 | scsi_host_put(shpnt); | ||
| 1689 | return 0; | ||
| 1690 | } | ||
| 1691 | |||
| 1692 | /* The following routine is the SCSI command queue for the midlevel driver */ | ||
| 1693 | static int ibmmca_queuecommand_lck(Scsi_Cmnd * cmd, void (*done) (Scsi_Cmnd *)) | ||
| 1694 | { | ||
| 1695 | unsigned int ldn; | ||
| 1696 | unsigned int scsi_cmd; | ||
| 1697 | struct im_scb *scb; | ||
| 1698 | struct Scsi_Host *shpnt; | ||
| 1699 | int current_ldn; | ||
| 1700 | int id, lun; | ||
| 1701 | int target; | ||
| 1702 | int max_pun; | ||
| 1703 | int i; | ||
| 1704 | struct scatterlist *sg; | ||
| 1705 | |||
| 1706 | shpnt = cmd->device->host; | ||
| 1707 | |||
| 1708 | max_pun = subsystem_maxid(shpnt); | ||
| 1709 | if (ibm_ansi_order) { | ||
| 1710 | target = max_pun - 1 - cmd->device->id; | ||
| 1711 | if ((target <= subsystem_pun(shpnt)) && (cmd->device->id <= subsystem_pun(shpnt))) | ||
| 1712 | target--; | ||
| 1713 | else if ((target >= subsystem_pun(shpnt)) && (cmd->device->id >= subsystem_pun(shpnt))) | ||
| 1714 | target++; | ||
| 1715 | } else | ||
| 1716 | target = cmd->device->id; | ||
| 1717 | |||
| 1718 | /* if (target,lun) is NO LUN or not existing at all, return error */ | ||
| 1719 | if ((get_scsi(shpnt)[target][cmd->device->lun] == TYPE_NO_LUN) || (get_scsi(shpnt)[target][cmd->device->lun] == TYPE_NO_DEVICE)) { | ||
| 1720 | cmd->result = DID_NO_CONNECT << 16; | ||
| 1721 | if (done) | ||
| 1722 | done(cmd); | ||
| 1723 | return 0; | ||
| 1724 | } | ||
| 1725 | |||
| 1726 | /*if (target,lun) unassigned, do further checks... */ | ||
| 1727 | ldn = get_ldn(shpnt)[target][cmd->device->lun]; | ||
| 1728 | if (ldn >= MAX_LOG_DEV) { /* on invalid ldn do special stuff */ | ||
| 1729 | if (ldn > MAX_LOG_DEV) { /* dynamical remapping if ldn unassigned */ | ||
| 1730 | current_ldn = next_ldn(shpnt); /* stop-value for one circle */ | ||
| 1731 | while (ld(shpnt)[next_ldn(shpnt)].cmd) { /* search for a occupied, but not in */ | ||
| 1732 | /* command-processing ldn. */ | ||
| 1733 | next_ldn(shpnt)++; | ||
| 1734 | if (next_ldn(shpnt) >= MAX_LOG_DEV) | ||
| 1735 | next_ldn(shpnt) = 7; | ||
| 1736 | if (current_ldn == next_ldn(shpnt)) { /* One circle done ? */ | ||
| 1737 | /* no non-processing ldn found */ | ||
| 1738 | scmd_printk(KERN_WARNING, cmd, | ||
| 1739 | "IBM MCA SCSI: Cannot assign SCSI-device dynamically!\n" | ||
| 1740 | " On ldn 7-14 SCSI-commands everywhere in progress.\n" | ||
| 1741 | " Reporting DID_NO_CONNECT for device.\n"); | ||
| 1742 | cmd->result = DID_NO_CONNECT << 16; /* return no connect */ | ||
| 1743 | if (done) | ||
| 1744 | done(cmd); | ||
| 1745 | return 0; | ||
| 1746 | } | ||
| 1747 | } | ||
| 1748 | |||
| 1749 | /* unmap non-processing ldn */ | ||
| 1750 | for (id = 0; id < max_pun; id++) | ||
| 1751 | for (lun = 0; lun < 8; lun++) { | ||
| 1752 | if (get_ldn(shpnt)[id][lun] == next_ldn(shpnt)) { | ||
| 1753 | get_ldn(shpnt)[id][lun] = TYPE_NO_DEVICE; | ||
| 1754 | get_scsi(shpnt)[id][lun] = TYPE_NO_DEVICE; | ||
| 1755 | /* unmap entry */ | ||
| 1756 | } | ||
| 1757 | } | ||
| 1758 | /* set reduced interrupt_handler-mode for checking */ | ||
| 1759 | local_checking_phase_flag(shpnt) = 1; | ||
| 1760 | /* map found ldn to pun,lun */ | ||
| 1761 | get_ldn(shpnt)[target][cmd->device->lun] = next_ldn(shpnt); | ||
| 1762 | /* change ldn to the right value, that is now next_ldn */ | ||
| 1763 | ldn = next_ldn(shpnt); | ||
| 1764 | /* unassign all ldns (pun,lun,ldn does not matter for remove) */ | ||
| 1765 | immediate_assign(shpnt, 0, 0, 0, REMOVE_LDN); | ||
| 1766 | /* set only LDN for remapped device */ | ||
| 1767 | immediate_assign(shpnt, target, cmd->device->lun, ldn, SET_LDN); | ||
| 1768 | /* get device information for ld[ldn] */ | ||
| 1769 | if (device_exists(shpnt, ldn, &ld(shpnt)[ldn].block_length, &ld(shpnt)[ldn].device_type)) { | ||
| 1770 | ld(shpnt)[ldn].cmd = NULL; /* To prevent panic set 0, because | ||
| 1771 | devices that were not assigned, | ||
| 1772 | should have nothing in progress. */ | ||
| 1773 | get_scsi(shpnt)[target][cmd->device->lun] = ld(shpnt)[ldn].device_type; | ||
| 1774 | /* increase assignment counters for statistics in /proc */ | ||
| 1775 | IBM_DS(shpnt).dynamical_assignments++; | ||
| 1776 | IBM_DS(shpnt).ldn_assignments[ldn]++; | ||
| 1777 | } else | ||
| 1778 | /* panic here, because a device, found at boottime has | ||
| 1779 | vanished */ | ||
| 1780 | panic("IBM MCA SCSI: ldn=0x%x, SCSI-device on (%d,%d) vanished!\n", ldn, target, cmd->device->lun); | ||
| 1781 | /* unassign again all ldns (pun,lun,ldn does not matter for remove) */ | ||
| 1782 | immediate_assign(shpnt, 0, 0, 0, REMOVE_LDN); | ||
| 1783 | /* remap all ldns, as written in the pun/lun table */ | ||
| 1784 | lun = 0; | ||
| 1785 | #ifdef CONFIG_SCSI_MULTI_LUN | ||
| 1786 | for (lun = 0; lun < 8; lun++) | ||
| 1787 | #endif | ||
| 1788 | for (id = 0; id < max_pun; id++) { | ||
| 1789 | if (get_ldn(shpnt)[id][lun] <= MAX_LOG_DEV) | ||
| 1790 | immediate_assign(shpnt, id, lun, get_ldn(shpnt)[id][lun], SET_LDN); | ||
| 1791 | } | ||
| 1792 | /* set back to normal interrupt_handling */ | ||
| 1793 | local_checking_phase_flag(shpnt) = 0; | ||
| 1794 | #ifdef IM_DEBUG_PROBE | ||
| 1795 | /* Information on syslog terminal */ | ||
| 1796 | printk("IBM MCA SCSI: ldn=0x%x dynamically reassigned to (%d,%d).\n", ldn, target, cmd->device->lun); | ||
| 1797 | #endif | ||
| 1798 | /* increase next_ldn for next dynamical assignment */ | ||
| 1799 | next_ldn(shpnt)++; | ||
| 1800 | if (next_ldn(shpnt) >= MAX_LOG_DEV) | ||
| 1801 | next_ldn(shpnt) = 7; | ||
| 1802 | } else { /* wall against Linux accesses to the subsystem adapter */ | ||
| 1803 | cmd->result = DID_BAD_TARGET << 16; | ||
| 1804 | if (done) | ||
| 1805 | done(cmd); | ||
| 1806 | return 0; | ||
| 1807 | } | ||
| 1808 | } | ||
| 1809 | |||
| 1810 | /*verify there is no command already in progress for this log dev */ | ||
| 1811 | if (ld(shpnt)[ldn].cmd) | ||
| 1812 | panic("IBM MCA SCSI: cmd already in progress for this ldn.\n"); | ||
| 1813 | |||
| 1814 | /*save done in cmd, and save cmd for the interrupt handler */ | ||
| 1815 | cmd->scsi_done = done; | ||
| 1816 | ld(shpnt)[ldn].cmd = cmd; | ||
| 1817 | |||
| 1818 | /*fill scb information independent of the scsi command */ | ||
| 1819 | scb = &(ld(shpnt)[ldn].scb); | ||
| 1820 | ld(shpnt)[ldn].tsb.dev_status = 0; | ||
| 1821 | scb->enable = IM_REPORT_TSB_ONLY_ON_ERROR | IM_RETRY_ENABLE; | ||
| 1822 | scb->tsb_adr = isa_virt_to_bus(&(ld(shpnt)[ldn].tsb)); | ||
| 1823 | scsi_cmd = cmd->cmnd[0]; | ||
| 1824 | |||
| 1825 | if (scsi_sg_count(cmd)) { | ||
| 1826 | BUG_ON(scsi_sg_count(cmd) > 16); | ||
| 1827 | |||
| 1828 | scsi_for_each_sg(cmd, sg, scsi_sg_count(cmd), i) { | ||
| 1829 | ld(shpnt)[ldn].sge[i].address = (void *) (isa_page_to_bus(sg_page(sg)) + sg->offset); | ||
| 1830 | ld(shpnt)[ldn].sge[i].byte_length = sg->length; | ||
| 1831 | } | ||
| 1832 | scb->enable |= IM_POINTER_TO_LIST; | ||
| 1833 | scb->sys_buf_adr = isa_virt_to_bus(&(ld(shpnt)[ldn].sge[0])); | ||
| 1834 | scb->sys_buf_length = scsi_sg_count(cmd) * sizeof(struct im_sge); | ||
| 1835 | } else { | ||
| 1836 | scb->sys_buf_adr = isa_virt_to_bus(scsi_sglist(cmd)); | ||
| 1837 | /* recent Linux midlevel SCSI places 1024 byte for inquiry | ||
| 1838 | * command. Far too much for old PS/2 hardware. */ | ||
| 1839 | switch (scsi_cmd) { | ||
| 1840 | /* avoid command errors by setting bufferlengths to | ||
| 1841 | * ANSI-standard. Beware of forcing it to 255, | ||
| 1842 | * this could SEGV the kernel!!! */ | ||
| 1843 | case INQUIRY: | ||
| 1844 | case REQUEST_SENSE: | ||
| 1845 | case MODE_SENSE: | ||
| 1846 | case MODE_SELECT: | ||
| 1847 | if (scsi_bufflen(cmd) > 255) | ||
| 1848 | scb->sys_buf_length = 255; | ||
| 1849 | else | ||
| 1850 | scb->sys_buf_length = scsi_bufflen(cmd); | ||
| 1851 | break; | ||
| 1852 | case TEST_UNIT_READY: | ||
| 1853 | scb->sys_buf_length = 0; | ||
| 1854 | break; | ||
| 1855 | default: | ||
| 1856 | scb->sys_buf_length = scsi_bufflen(cmd); | ||
| 1857 | break; | ||
| 1858 | } | ||
| 1859 | } | ||
| 1860 | /*fill scb information dependent on scsi command */ | ||
| 1861 | |||
| 1862 | #ifdef IM_DEBUG_CMD | ||
| 1863 | printk("issue scsi cmd=%02x to ldn=%d\n", scsi_cmd, ldn); | ||
| 1864 | #endif | ||
| 1865 | |||
| 1866 | /* for specific device-type debugging: */ | ||
| 1867 | #ifdef IM_DEBUG_CMD_SPEC_DEV | ||
| 1868 | if (ld(shpnt)[ldn].device_type == IM_DEBUG_CMD_DEVICE) | ||
| 1869 | printk("(SCSI-device-type=0x%x) issue scsi cmd=%02x to ldn=%d\n", ld(shpnt)[ldn].device_type, scsi_cmd, ldn); | ||
| 1870 | #endif | ||
| 1871 | |||
| 1872 | /* for possible panics store current command */ | ||
| 1873 | last_scsi_command(shpnt)[ldn] = scsi_cmd; | ||
| 1874 | last_scsi_type(shpnt)[ldn] = IM_SCB; | ||
| 1875 | /* update statistical info */ | ||
| 1876 | IBM_DS(shpnt).total_accesses++; | ||
| 1877 | IBM_DS(shpnt).ldn_access[ldn]++; | ||
| 1878 | |||
| 1879 | switch (scsi_cmd) { | ||
| 1880 | case READ_6: | ||
| 1881 | case WRITE_6: | ||
| 1882 | case READ_10: | ||
| 1883 | case WRITE_10: | ||
| 1884 | case READ_12: | ||
| 1885 | case WRITE_12: | ||
| 1886 | /* Distinguish between disk and other devices. Only disks (that are the | ||
| 1887 | most frequently accessed devices) should be supported by the | ||
| 1888 | IBM-SCSI-Subsystem commands. */ | ||
| 1889 | switch (ld(shpnt)[ldn].device_type) { | ||
| 1890 | case TYPE_DISK: /* for harddisks enter here ... */ | ||
| 1891 | case TYPE_MOD: /* ... try it also for MO-drives (send flames as */ | ||
| 1892 | /* you like, if this won't work.) */ | ||
| 1893 | if (scsi_cmd == READ_6 || scsi_cmd == READ_10 || scsi_cmd == READ_12) { | ||
| 1894 | /* read command preparations */ | ||
| 1895 | scb->enable |= IM_READ_CONTROL; | ||
| 1896 | IBM_DS(shpnt).ldn_read_access[ldn]++; /* increase READ-access on ldn stat. */ | ||
| 1897 | scb->command = IM_READ_DATA_CMD | IM_NO_DISCONNECT; | ||
| 1898 | } else { /* write command preparations */ | ||
| 1899 | IBM_DS(shpnt).ldn_write_access[ldn]++; /* increase write-count on ldn stat. */ | ||
| 1900 | scb->command = IM_WRITE_DATA_CMD | IM_NO_DISCONNECT; | ||
| 1901 | } | ||
| 1902 | if (scsi_cmd == READ_6 || scsi_cmd == WRITE_6) { | ||
| 1903 | scb->u1.log_blk_adr = (((unsigned) cmd->cmnd[3]) << 0) | (((unsigned) cmd->cmnd[2]) << 8) | ((((unsigned) cmd->cmnd[1]) & 0x1f) << 16); | ||
| 1904 | scb->u2.blk.count = (unsigned) cmd->cmnd[4]; | ||
| 1905 | } else { | ||
| 1906 | scb->u1.log_blk_adr = (((unsigned) cmd->cmnd[5]) << 0) | (((unsigned) cmd->cmnd[4]) << 8) | (((unsigned) cmd->cmnd[3]) << 16) | (((unsigned) cmd->cmnd[2]) << 24); | ||
| 1907 | scb->u2.blk.count = (((unsigned) cmd->cmnd[8]) << 0) | (((unsigned) cmd->cmnd[7]) << 8); | ||
| 1908 | } | ||
| 1909 | last_scsi_logical_block(shpnt)[ldn] = scb->u1.log_blk_adr; | ||
| 1910 | last_scsi_blockcount(shpnt)[ldn] = scb->u2.blk.count; | ||
| 1911 | scb->u2.blk.length = ld(shpnt)[ldn].block_length; | ||
| 1912 | break; | ||
| 1913 | /* for other devices, enter here. Other types are not known by | ||
| 1914 | Linux! TYPE_NO_LUN is forbidden as valid device. */ | ||
| 1915 | case TYPE_ROM: | ||
| 1916 | case TYPE_TAPE: | ||
| 1917 | case TYPE_PROCESSOR: | ||
| 1918 | case TYPE_WORM: | ||
| 1919 | case TYPE_SCANNER: | ||
| 1920 | case TYPE_MEDIUM_CHANGER: | ||
| 1921 | /* If there is a sequential-device, IBM recommends to use | ||
| 1922 | IM_OTHER_SCSI_CMD_CMD instead of subsystem READ/WRITE. | ||
| 1923 | This includes CD-ROM devices, too, due to the partial sequential | ||
| 1924 | read capabilities. */ | ||
| 1925 | scb->command = IM_OTHER_SCSI_CMD_CMD; | ||
| 1926 | if (scsi_cmd == READ_6 || scsi_cmd == READ_10 || scsi_cmd == READ_12) | ||
| 1927 | /* enable READ */ | ||
| 1928 | scb->enable |= IM_READ_CONTROL; | ||
| 1929 | scb->enable |= IM_BYPASS_BUFFER; | ||
| 1930 | scb->u1.scsi_cmd_length = cmd->cmd_len; | ||
| 1931 | memcpy(scb->u2.scsi_command, cmd->cmnd, cmd->cmd_len); | ||
| 1932 | last_scsi_type(shpnt)[ldn] = IM_LONG_SCB; | ||
| 1933 | /* Read/write on this non-disk devices is also displayworthy, | ||
| 1934 | so flash-up the LED/display. */ | ||
| 1935 | break; | ||
| 1936 | } | ||
| 1937 | break; | ||
| 1938 | case INQUIRY: | ||
| 1939 | IBM_DS(shpnt).ldn_inquiry_access[ldn]++; | ||
| 1940 | scb->command = IM_DEVICE_INQUIRY_CMD; | ||
| 1941 | scb->enable |= IM_READ_CONTROL | IM_SUPRESS_EXCEPTION_SHORT | IM_BYPASS_BUFFER; | ||
| 1942 | scb->u1.log_blk_adr = 0; | ||
| 1943 | break; | ||
| 1944 | case TEST_UNIT_READY: | ||
| 1945 | scb->command = IM_OTHER_SCSI_CMD_CMD; | ||
| 1946 | scb->enable |= IM_READ_CONTROL | IM_SUPRESS_EXCEPTION_SHORT | IM_BYPASS_BUFFER; | ||
| 1947 | scb->u1.log_blk_adr = 0; | ||
| 1948 | scb->u1.scsi_cmd_length = 6; | ||
| 1949 | memcpy(scb->u2.scsi_command, cmd->cmnd, 6); | ||
| 1950 | last_scsi_type(shpnt)[ldn] = IM_LONG_SCB; | ||
| 1951 | break; | ||
| 1952 | case READ_CAPACITY: | ||
| 1953 | /* the length of system memory buffer must be exactly 8 bytes */ | ||
| 1954 | scb->command = IM_READ_CAPACITY_CMD; | ||
| 1955 | scb->enable |= IM_READ_CONTROL | IM_BYPASS_BUFFER; | ||
| 1956 | if (scb->sys_buf_length > 8) | ||
| 1957 | scb->sys_buf_length = 8; | ||
| 1958 | break; | ||
| 1959 | /* Commands that need read-only-mode (system <- device): */ | ||
| 1960 | case REQUEST_SENSE: | ||
| 1961 | scb->command = IM_REQUEST_SENSE_CMD; | ||
| 1962 | scb->enable |= IM_READ_CONTROL | IM_SUPRESS_EXCEPTION_SHORT | IM_BYPASS_BUFFER; | ||
| 1963 | break; | ||
| 1964 | /* Commands that need write-only-mode (system -> device): */ | ||
| 1965 | case MODE_SELECT: | ||
| 1966 | case MODE_SELECT_10: | ||
| 1967 | IBM_DS(shpnt).ldn_modeselect_access[ldn]++; | ||
| 1968 | scb->command = IM_OTHER_SCSI_CMD_CMD; | ||
| 1969 | scb->enable |= IM_SUPRESS_EXCEPTION_SHORT | IM_BYPASS_BUFFER; /*Select needs WRITE-enabled */ | ||
| 1970 | scb->u1.scsi_cmd_length = cmd->cmd_len; | ||
| 1971 | memcpy(scb->u2.scsi_command, cmd->cmnd, cmd->cmd_len); | ||
| 1972 | last_scsi_type(shpnt)[ldn] = IM_LONG_SCB; | ||
| 1973 | break; | ||
| 1974 | /* For other commands, read-only is useful. Most other commands are | ||
| 1975 | running without an input-data-block. */ | ||
| 1976 | default: | ||
| 1977 | scb->command = IM_OTHER_SCSI_CMD_CMD; | ||
| 1978 | scb->enable |= IM_READ_CONTROL | IM_SUPRESS_EXCEPTION_SHORT | IM_BYPASS_BUFFER; | ||
| 1979 | scb->u1.scsi_cmd_length = cmd->cmd_len; | ||
| 1980 | memcpy(scb->u2.scsi_command, cmd->cmnd, cmd->cmd_len); | ||
| 1981 | last_scsi_type(shpnt)[ldn] = IM_LONG_SCB; | ||
| 1982 | break; | ||
| 1983 | } | ||
| 1984 | /*issue scb command, and return */ | ||
| 1985 | if (++disk_rw_in_progress == 1) | ||
| 1986 | PS2_DISK_LED_ON(shpnt->host_no, target); | ||
| 1987 | |||
| 1988 | if (last_scsi_type(shpnt)[ldn] == IM_LONG_SCB) { | ||
| 1989 | issue_cmd(shpnt, isa_virt_to_bus(scb), IM_LONG_SCB | ldn); | ||
| 1990 | IBM_DS(shpnt).long_scbs++; | ||
| 1991 | } else { | ||
| 1992 | issue_cmd(shpnt, isa_virt_to_bus(scb), IM_SCB | ldn); | ||
| 1993 | IBM_DS(shpnt).scbs++; | ||
| 1994 | } | ||
| 1995 | return 0; | ||
| 1996 | } | ||
| 1997 | |||
| 1998 | static DEF_SCSI_QCMD(ibmmca_queuecommand) | ||
| 1999 | |||
| 2000 | static int __ibmmca_abort(Scsi_Cmnd * cmd) | ||
| 2001 | { | ||
| 2002 | /* Abort does not work, as the adapter never generates an interrupt on | ||
| 2003 | * whatever situation is simulated, even when really pending commands | ||
| 2004 | * are running on the adapters' hardware ! */ | ||
| 2005 | |||
| 2006 | struct Scsi_Host *shpnt; | ||
| 2007 | unsigned int ldn; | ||
| 2008 | void (*saved_done) (Scsi_Cmnd *); | ||
| 2009 | int target; | ||
| 2010 | int max_pun; | ||
| 2011 | unsigned long imm_command; | ||
| 2012 | |||
| 2013 | #ifdef IM_DEBUG_PROBE | ||
| 2014 | printk("IBM MCA SCSI: Abort subroutine called...\n"); | ||
| 2015 | #endif | ||
| 2016 | |||
| 2017 | shpnt = cmd->device->host; | ||
| 2018 | |||
| 2019 | max_pun = subsystem_maxid(shpnt); | ||
| 2020 | if (ibm_ansi_order) { | ||
| 2021 | target = max_pun - 1 - cmd->device->id; | ||
| 2022 | if ((target <= subsystem_pun(shpnt)) && (cmd->device->id <= subsystem_pun(shpnt))) | ||
| 2023 | target--; | ||
| 2024 | else if ((target >= subsystem_pun(shpnt)) && (cmd->device->id >= subsystem_pun(shpnt))) | ||
| 2025 | target++; | ||
| 2026 | } else | ||
| 2027 | target = cmd->device->id; | ||
| 2028 | |||
| 2029 | /* get logical device number, and disable system interrupts */ | ||
| 2030 | printk(KERN_WARNING "IBM MCA SCSI: Sending abort to device pun=%d, lun=%d.\n", target, cmd->device->lun); | ||
| 2031 | ldn = get_ldn(shpnt)[target][cmd->device->lun]; | ||
| 2032 | |||
| 2033 | /*if cmd for this ldn has already finished, no need to abort */ | ||
| 2034 | if (!ld(shpnt)[ldn].cmd) { | ||
| 2035 | return SUCCESS; | ||
| 2036 | } | ||
| 2037 | |||
| 2038 | /* Clear ld.cmd, save done function, install internal done, | ||
| 2039 | * send abort immediate command (this enables sys. interrupts), | ||
| 2040 | * and wait until the interrupt arrives. | ||
| 2041 | */ | ||
| 2042 | saved_done = cmd->scsi_done; | ||
| 2043 | cmd->scsi_done = internal_done; | ||
| 2044 | cmd->SCp.Status = 0; | ||
| 2045 | last_scsi_command(shpnt)[ldn] = IM_ABORT_IMM_CMD; | ||
| 2046 | last_scsi_type(shpnt)[ldn] = IM_IMM_CMD; | ||
| 2047 | imm_command = inl(IM_CMD_REG(shpnt)); | ||
| 2048 | imm_command &= (unsigned long) (0xffff0000); /* mask reserved stuff */ | ||
| 2049 | imm_command |= (unsigned long) (IM_ABORT_IMM_CMD); | ||
| 2050 | /* must wait for attention reg not busy */ | ||
| 2051 | /* FIXME - timeout, politeness */ | ||
| 2052 | while (1) { | ||
| 2053 | if (!(inb(IM_STAT_REG(shpnt)) & IM_BUSY)) | ||
| 2054 | break; | ||
| 2055 | } | ||
| 2056 | /* write registers and enable system interrupts */ | ||
| 2057 | outl(imm_command, IM_CMD_REG(shpnt)); | ||
| 2058 | outb(IM_IMM_CMD | ldn, IM_ATTN_REG(shpnt)); | ||
| 2059 | #ifdef IM_DEBUG_PROBE | ||
| 2060 | printk("IBM MCA SCSI: Abort queued to adapter...\n"); | ||
| 2061 | #endif | ||
| 2062 | spin_unlock_irq(shpnt->host_lock); | ||
| 2063 | while (!cmd->SCp.Status) | ||
| 2064 | yield(); | ||
| 2065 | spin_lock_irq(shpnt->host_lock); | ||
| 2066 | cmd->scsi_done = saved_done; | ||
| 2067 | #ifdef IM_DEBUG_PROBE | ||
| 2068 | printk("IBM MCA SCSI: Abort returned with adapter response...\n"); | ||
| 2069 | #endif | ||
| 2070 | |||
| 2071 | /*if abort went well, call saved done, then return success or error */ | ||
| 2072 | if (cmd->result == (DID_ABORT << 16)) | ||
| 2073 | { | ||
| 2074 | cmd->result |= DID_ABORT << 16; | ||
| 2075 | if (cmd->scsi_done) | ||
| 2076 | (cmd->scsi_done) (cmd); | ||
| 2077 | ld(shpnt)[ldn].cmd = NULL; | ||
| 2078 | #ifdef IM_DEBUG_PROBE | ||
| 2079 | printk("IBM MCA SCSI: Abort finished with success.\n"); | ||
| 2080 | #endif | ||
| 2081 | return SUCCESS; | ||
| 2082 | } else { | ||
| 2083 | cmd->result |= DID_NO_CONNECT << 16; | ||
| 2084 | if (cmd->scsi_done) | ||
| 2085 | (cmd->scsi_done) (cmd); | ||
| 2086 | ld(shpnt)[ldn].cmd = NULL; | ||
| 2087 | #ifdef IM_DEBUG_PROBE | ||
| 2088 | printk("IBM MCA SCSI: Abort failed.\n"); | ||
| 2089 | #endif | ||
| 2090 | return FAILED; | ||
| 2091 | } | ||
| 2092 | } | ||
| 2093 | |||
| 2094 | static int ibmmca_abort(Scsi_Cmnd * cmd) | ||
| 2095 | { | ||
| 2096 | struct Scsi_Host *shpnt = cmd->device->host; | ||
| 2097 | int rc; | ||
| 2098 | |||
| 2099 | spin_lock_irq(shpnt->host_lock); | ||
| 2100 | rc = __ibmmca_abort(cmd); | ||
| 2101 | spin_unlock_irq(shpnt->host_lock); | ||
| 2102 | |||
| 2103 | return rc; | ||
| 2104 | } | ||
| 2105 | |||
| 2106 | static int __ibmmca_host_reset(Scsi_Cmnd * cmd) | ||
| 2107 | { | ||
| 2108 | struct Scsi_Host *shpnt; | ||
| 2109 | Scsi_Cmnd *cmd_aid; | ||
| 2110 | int ticks, i; | ||
| 2111 | unsigned long imm_command; | ||
| 2112 | |||
| 2113 | BUG_ON(cmd == NULL); | ||
| 2114 | |||
| 2115 | ticks = IM_RESET_DELAY * HZ; | ||
| 2116 | shpnt = cmd->device->host; | ||
| 2117 | |||
| 2118 | if (local_checking_phase_flag(shpnt)) { | ||
| 2119 | printk(KERN_WARNING "IBM MCA SCSI: unable to reset while checking devices.\n"); | ||
| 2120 | return FAILED; | ||
| 2121 | } | ||
| 2122 | |||
| 2123 | /* issue reset immediate command to subsystem, and wait for interrupt */ | ||
| 2124 | printk("IBM MCA SCSI: resetting all devices.\n"); | ||
| 2125 | reset_status(shpnt) = IM_RESET_IN_PROGRESS; | ||
| 2126 | last_scsi_command(shpnt)[0xf] = IM_RESET_IMM_CMD; | ||
| 2127 | last_scsi_type(shpnt)[0xf] = IM_IMM_CMD; | ||
| 2128 | imm_command = inl(IM_CMD_REG(shpnt)); | ||
| 2129 | imm_command &= (unsigned long) (0xffff0000); /* mask reserved stuff */ | ||
| 2130 | imm_command |= (unsigned long) (IM_RESET_IMM_CMD); | ||
| 2131 | /* must wait for attention reg not busy */ | ||
| 2132 | while (1) { | ||
| 2133 | if (!(inb(IM_STAT_REG(shpnt)) & IM_BUSY)) | ||
| 2134 | break; | ||
| 2135 | spin_unlock_irq(shpnt->host_lock); | ||
| 2136 | yield(); | ||
| 2137 | spin_lock_irq(shpnt->host_lock); | ||
| 2138 | } | ||
| 2139 | /*write registers and enable system interrupts */ | ||
| 2140 | outl(imm_command, IM_CMD_REG(shpnt)); | ||
| 2141 | outb(IM_IMM_CMD | 0xf, IM_ATTN_REG(shpnt)); | ||
| 2142 | /* wait for interrupt finished or intr_stat register to be set, as the | ||
| 2143 | * interrupt will not be executed, while we are in here! */ | ||
| 2144 | |||
| 2145 | /* FIXME: This is really really icky we so want a sleeping version of this ! */ | ||
| 2146 | while (reset_status(shpnt) == IM_RESET_IN_PROGRESS && --ticks && ((inb(IM_INTR_REG(shpnt)) & 0x8f) != 0x8f)) { | ||
| 2147 | udelay((1 + 999 / HZ) * 1000); | ||
| 2148 | barrier(); | ||
| 2149 | } | ||
| 2150 | /* if reset did not complete, just return an error */ | ||
| 2151 | if (!ticks) { | ||
| 2152 | printk(KERN_ERR "IBM MCA SCSI: reset did not complete within %d seconds.\n", IM_RESET_DELAY); | ||
| 2153 | reset_status(shpnt) = IM_RESET_FINISHED_FAIL; | ||
| 2154 | return FAILED; | ||
| 2155 | } | ||
| 2156 | |||
| 2157 | if ((inb(IM_INTR_REG(shpnt)) & 0x8f) == 0x8f) { | ||
| 2158 | /* analysis done by this routine and not by the intr-routine */ | ||
| 2159 | if (inb(IM_INTR_REG(shpnt)) == 0xaf) | ||
| 2160 | reset_status(shpnt) = IM_RESET_FINISHED_OK_NO_INT; | ||
| 2161 | else if (inb(IM_INTR_REG(shpnt)) == 0xcf) | ||
| 2162 | reset_status(shpnt) = IM_RESET_FINISHED_FAIL; | ||
| 2163 | else /* failed, 4get it */ | ||
| 2164 | reset_status(shpnt) = IM_RESET_NOT_IN_PROGRESS_NO_INT; | ||
| 2165 | outb(IM_EOI | 0xf, IM_ATTN_REG(shpnt)); | ||
| 2166 | } | ||
| 2167 | |||
| 2168 | /* if reset failed, just return an error */ | ||
| 2169 | if (reset_status(shpnt) == IM_RESET_FINISHED_FAIL) { | ||
| 2170 | printk(KERN_ERR "IBM MCA SCSI: reset failed.\n"); | ||
| 2171 | return FAILED; | ||
| 2172 | } | ||
| 2173 | |||
| 2174 | /* so reset finished ok - call outstanding done's, and return success */ | ||
| 2175 | printk(KERN_INFO "IBM MCA SCSI: Reset successfully completed.\n"); | ||
| 2176 | for (i = 0; i < MAX_LOG_DEV; i++) { | ||
| 2177 | cmd_aid = ld(shpnt)[i].cmd; | ||
| 2178 | if (cmd_aid && cmd_aid->scsi_done) { | ||
| 2179 | ld(shpnt)[i].cmd = NULL; | ||
| 2180 | cmd_aid->result = DID_RESET << 16; | ||
| 2181 | } | ||
| 2182 | } | ||
| 2183 | return SUCCESS; | ||
| 2184 | } | ||
| 2185 | |||
| 2186 | static int ibmmca_host_reset(Scsi_Cmnd * cmd) | ||
| 2187 | { | ||
| 2188 | struct Scsi_Host *shpnt = cmd->device->host; | ||
| 2189 | int rc; | ||
| 2190 | |||
| 2191 | spin_lock_irq(shpnt->host_lock); | ||
| 2192 | rc = __ibmmca_host_reset(cmd); | ||
| 2193 | spin_unlock_irq(shpnt->host_lock); | ||
| 2194 | |||
| 2195 | return rc; | ||
| 2196 | } | ||
| 2197 | |||
| 2198 | static int ibmmca_biosparam(struct scsi_device *sdev, struct block_device *bdev, sector_t capacity, int *info) | ||
| 2199 | { | ||
| 2200 | int size = capacity; | ||
| 2201 | info[0] = 64; | ||
| 2202 | info[1] = 32; | ||
| 2203 | info[2] = size / (info[0] * info[1]); | ||
| 2204 | if (info[2] >= 1024) { | ||
| 2205 | info[0] = 128; | ||
| 2206 | info[1] = 63; | ||
| 2207 | info[2] = size / (info[0] * info[1]); | ||
| 2208 | if (info[2] >= 1024) { | ||
| 2209 | info[0] = 255; | ||
| 2210 | info[1] = 63; | ||
| 2211 | info[2] = size / (info[0] * info[1]); | ||
| 2212 | if (info[2] >= 1024) | ||
| 2213 | info[2] = 1023; | ||
| 2214 | } | ||
| 2215 | } | ||
| 2216 | return 0; | ||
| 2217 | } | ||
| 2218 | |||
| 2219 | /* calculate percentage of total accesses on a ldn */ | ||
| 2220 | static int ldn_access_load(struct Scsi_Host *shpnt, int ldn) | ||
| 2221 | { | ||
| 2222 | if (IBM_DS(shpnt).total_accesses == 0) | ||
| 2223 | return (0); | ||
| 2224 | if (IBM_DS(shpnt).ldn_access[ldn] == 0) | ||
| 2225 | return (0); | ||
| 2226 | return (IBM_DS(shpnt).ldn_access[ldn] * 100) / IBM_DS(shpnt).total_accesses; | ||
| 2227 | } | ||
| 2228 | |||
| 2229 | /* calculate total amount of r/w-accesses */ | ||
| 2230 | static int ldn_access_total_read_write(struct Scsi_Host *shpnt) | ||
| 2231 | { | ||
| 2232 | int a; | ||
| 2233 | int i; | ||
| 2234 | |||
| 2235 | a = 0; | ||
| 2236 | for (i = 0; i <= MAX_LOG_DEV; i++) | ||
| 2237 | a += IBM_DS(shpnt).ldn_read_access[i] + IBM_DS(shpnt).ldn_write_access[i]; | ||
| 2238 | return (a); | ||
| 2239 | } | ||
| 2240 | |||
| 2241 | static int ldn_access_total_inquiry(struct Scsi_Host *shpnt) | ||
| 2242 | { | ||
| 2243 | int a; | ||
| 2244 | int i; | ||
| 2245 | |||
| 2246 | a = 0; | ||
| 2247 | for (i = 0; i <= MAX_LOG_DEV; i++) | ||
| 2248 | a += IBM_DS(shpnt).ldn_inquiry_access[i]; | ||
| 2249 | return (a); | ||
| 2250 | } | ||
| 2251 | |||
| 2252 | static int ldn_access_total_modeselect(struct Scsi_Host *shpnt) | ||
| 2253 | { | ||
| 2254 | int a; | ||
| 2255 | int i; | ||
| 2256 | |||
| 2257 | a = 0; | ||
| 2258 | for (i = 0; i <= MAX_LOG_DEV; i++) | ||
| 2259 | a += IBM_DS(shpnt).ldn_modeselect_access[i]; | ||
| 2260 | return (a); | ||
| 2261 | } | ||
| 2262 | |||
| 2263 | /* routine to display info in the proc-fs-structure (a deluxe feature) */ | ||
| 2264 | static int ibmmca_proc_info(struct Scsi_Host *shpnt, char *buffer, char **start, off_t offset, int length, int inout) | ||
| 2265 | { | ||
| 2266 | int len = 0; | ||
| 2267 | int i, id, lun; | ||
| 2268 | unsigned long flags; | ||
| 2269 | int max_pun; | ||
| 2270 | |||
| 2271 | |||
| 2272 | spin_lock_irqsave(shpnt->host_lock, flags); /* Check it */ | ||
| 2273 | |||
| 2274 | max_pun = subsystem_maxid(shpnt); | ||
| 2275 | |||
| 2276 | len += sprintf(buffer + len, "\n IBM-SCSI-Subsystem-Linux-Driver, Version %s\n\n\n", IBMMCA_SCSI_DRIVER_VERSION); | ||
| 2277 | len += sprintf(buffer + len, " SCSI Access-Statistics:\n"); | ||
| 2278 | len += sprintf(buffer + len, " Device Scanning Order....: %s\n", (ibm_ansi_order) ? "IBM/ANSI" : "New Industry Standard"); | ||
| 2279 | #ifdef CONFIG_SCSI_MULTI_LUN | ||
| 2280 | len += sprintf(buffer + len, " Multiple LUN probing.....: Yes\n"); | ||
| 2281 | #else | ||
| 2282 | len += sprintf(buffer + len, " Multiple LUN probing.....: No\n"); | ||
| 2283 | #endif | ||
| 2284 | len += sprintf(buffer + len, " This Hostnumber..........: %d\n", shpnt->host_no); | ||
| 2285 | len += sprintf(buffer + len, " Base I/O-Port............: 0x%x\n", (unsigned int) (IM_CMD_REG(shpnt))); | ||
| 2286 | len += sprintf(buffer + len, " (Shared) IRQ.............: %d\n", IM_IRQ); | ||
| 2287 | len += sprintf(buffer + len, " Total Interrupts.........: %d\n", IBM_DS(shpnt).total_interrupts); | ||
| 2288 | len += sprintf(buffer + len, " Total SCSI Accesses......: %d\n", IBM_DS(shpnt).total_accesses); | ||
| 2289 | len += sprintf(buffer + len, " Total short SCBs.........: %d\n", IBM_DS(shpnt).scbs); | ||
| 2290 | len += sprintf(buffer + len, " Total long SCBs..........: %d\n", IBM_DS(shpnt).long_scbs); | ||
| 2291 | len += sprintf(buffer + len, " Total SCSI READ/WRITE..: %d\n", ldn_access_total_read_write(shpnt)); | ||
| 2292 | len += sprintf(buffer + len, " Total SCSI Inquiries...: %d\n", ldn_access_total_inquiry(shpnt)); | ||
| 2293 | len += sprintf(buffer + len, " Total SCSI Modeselects.: %d\n", ldn_access_total_modeselect(shpnt)); | ||
| 2294 | len += sprintf(buffer + len, " Total SCSI other cmds..: %d\n", IBM_DS(shpnt).total_accesses - ldn_access_total_read_write(shpnt) | ||
| 2295 | - ldn_access_total_modeselect(shpnt) | ||
| 2296 | - ldn_access_total_inquiry(shpnt)); | ||
| 2297 | len += sprintf(buffer + len, " Total SCSI command fails.: %d\n\n", IBM_DS(shpnt).total_errors); | ||
| 2298 | len += sprintf(buffer + len, " Logical-Device-Number (LDN) Access-Statistics:\n"); | ||
| 2299 | len += sprintf(buffer + len, " LDN | Accesses [%%] | READ | WRITE | ASSIGNMENTS\n"); | ||
| 2300 | len += sprintf(buffer + len, " -----|--------------|-----------|-----------|--------------\n"); | ||
| 2301 | for (i = 0; i <= MAX_LOG_DEV; i++) | ||
| 2302 | len += sprintf(buffer + len, " %2X | %3d | %8d | %8d | %8d\n", i, ldn_access_load(shpnt, i), IBM_DS(shpnt).ldn_read_access[i], IBM_DS(shpnt).ldn_write_access[i], IBM_DS(shpnt).ldn_assignments[i]); | ||
| 2303 | len += sprintf(buffer + len, " -----------------------------------------------------------\n\n"); | ||
| 2304 | len += sprintf(buffer + len, " Dynamical-LDN-Assignment-Statistics:\n"); | ||
| 2305 | len += sprintf(buffer + len, " Number of physical SCSI-devices..: %d (+ Adapter)\n", IBM_DS(shpnt).total_scsi_devices); | ||
| 2306 | len += sprintf(buffer + len, " Dynamical Assignment necessary...: %s\n", IBM_DS(shpnt).dyn_flag ? "Yes" : "No "); | ||
| 2307 | len += sprintf(buffer + len, " Next LDN to be assigned..........: 0x%x\n", next_ldn(shpnt)); | ||
| 2308 | len += sprintf(buffer + len, " Dynamical assignments done yet...: %d\n", IBM_DS(shpnt).dynamical_assignments); | ||
| 2309 | len += sprintf(buffer + len, "\n Current SCSI-Device-Mapping:\n"); | ||
| 2310 | len += sprintf(buffer + len, " Physical SCSI-Device Map Logical SCSI-Device Map\n"); | ||
| 2311 | len += sprintf(buffer + len, " ID\\LUN 0 1 2 3 4 5 6 7 ID\\LUN 0 1 2 3 4 5 6 7\n"); | ||
| 2312 | for (id = 0; id < max_pun; id++) { | ||
| 2313 | len += sprintf(buffer + len, " %2d ", id); | ||
| 2314 | for (lun = 0; lun < 8; lun++) | ||
| 2315 | len += sprintf(buffer + len, "%2s ", ti_p(get_scsi(shpnt)[id][lun])); | ||
| 2316 | len += sprintf(buffer + len, " %2d ", id); | ||
| 2317 | for (lun = 0; lun < 8; lun++) | ||
| 2318 | len += sprintf(buffer + len, "%2s ", ti_l(get_ldn(shpnt)[id][lun])); | ||
| 2319 | len += sprintf(buffer + len, "\n"); | ||
| 2320 | } | ||
| 2321 | |||
| 2322 | len += sprintf(buffer + len, "(A = IBM-Subsystem, D = Harddisk, T = Tapedrive, P = Processor, W = WORM,\n"); | ||
| 2323 | len += sprintf(buffer + len, " R = CD-ROM, S = Scanner, M = MO-Drive, C = Medium-Changer, + = unprovided LUN,\n"); | ||
| 2324 | len += sprintf(buffer + len, " - = nothing found, nothing assigned or unprobed LUN)\n\n"); | ||
| 2325 | |||
| 2326 | *start = buffer + offset; | ||
| 2327 | len -= offset; | ||
| 2328 | if (len > length) | ||
| 2329 | len = length; | ||
| 2330 | spin_unlock_irqrestore(shpnt->host_lock, flags); | ||
| 2331 | return len; | ||
| 2332 | } | ||
| 2333 | |||
| 2334 | static int option_setup(char *str) | ||
| 2335 | { | ||
| 2336 | int ints[IM_MAX_HOSTS]; | ||
| 2337 | char *cur = str; | ||
| 2338 | int i = 1; | ||
| 2339 | |||
| 2340 | while (cur && isdigit(*cur) && i < IM_MAX_HOSTS) { | ||
| 2341 | ints[i++] = simple_strtoul(cur, NULL, 0); | ||
| 2342 | if ((cur = strchr(cur, ',')) != NULL) | ||
| 2343 | cur++; | ||
| 2344 | } | ||
| 2345 | ints[0] = i - 1; | ||
| 2346 | internal_ibmmca_scsi_setup(cur, ints); | ||
| 2347 | return 1; | ||
| 2348 | } | ||
| 2349 | |||
| 2350 | __setup("ibmmcascsi=", option_setup); | ||
| 2351 | |||
| 2352 | static struct mca_driver ibmmca_driver = { | ||
| 2353 | .id_table = ibmmca_id_table, | ||
| 2354 | .driver = { | ||
| 2355 | .name = "ibmmca", | ||
| 2356 | .bus = &mca_bus_type, | ||
| 2357 | .probe = ibmmca_probe, | ||
| 2358 | .remove = __devexit_p(ibmmca_remove), | ||
| 2359 | }, | ||
| 2360 | }; | ||
| 2361 | |||
| 2362 | static int __init ibmmca_init(void) | ||
| 2363 | { | ||
| 2364 | #ifdef MODULE | ||
| 2365 | /* If the driver is run as module, read from conf.modules or cmd-line */ | ||
| 2366 | if (boot_options) | ||
| 2367 | option_setup(boot_options); | ||
| 2368 | #endif | ||
| 2369 | |||
| 2370 | return mca_register_driver_integrated(&ibmmca_driver, MCA_INTEGSCSI); | ||
| 2371 | } | ||
| 2372 | |||
| 2373 | static void __exit ibmmca_exit(void) | ||
| 2374 | { | ||
| 2375 | mca_unregister_driver(&ibmmca_driver); | ||
| 2376 | } | ||
| 2377 | |||
| 2378 | module_init(ibmmca_init); | ||
| 2379 | module_exit(ibmmca_exit); | ||
diff --git a/drivers/scsi/sim710.c b/drivers/scsi/sim710.c index 8ac6ce792b69..a318264a4ba1 100644 --- a/drivers/scsi/sim710.c +++ b/drivers/scsi/sim710.c | |||
| @@ -17,7 +17,7 @@ | |||
| 17 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | 17 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 18 | *---------------------------------------------------------------------------- | 18 | *---------------------------------------------------------------------------- |
| 19 | * | 19 | * |
| 20 | * MCA card detection code by Trent McNair. | 20 | * MCA card detection code by Trent McNair. (now deleted) |
| 21 | * Fixes to not explicitly nul bss data from Xavier Bestel. | 21 | * Fixes to not explicitly nul bss data from Xavier Bestel. |
| 22 | * Some multiboard fixes from Rolf Eike Beer. | 22 | * Some multiboard fixes from Rolf Eike Beer. |
| 23 | * Auto probing of EISA config space from Trevor Hemsley. | 23 | * Auto probing of EISA config space from Trevor Hemsley. |
| @@ -32,7 +32,6 @@ | |||
| 32 | #include <linux/blkdev.h> | 32 | #include <linux/blkdev.h> |
| 33 | #include <linux/device.h> | 33 | #include <linux/device.h> |
| 34 | #include <linux/init.h> | 34 | #include <linux/init.h> |
| 35 | #include <linux/mca.h> | ||
| 36 | #include <linux/eisa.h> | 35 | #include <linux/eisa.h> |
| 37 | #include <linux/interrupt.h> | 36 | #include <linux/interrupt.h> |
| 38 | #include <scsi/scsi_host.h> | 37 | #include <scsi/scsi_host.h> |
| @@ -43,7 +42,7 @@ | |||
| 43 | #include "53c700.h" | 42 | #include "53c700.h" |
| 44 | 43 | ||
| 45 | 44 | ||
| 46 | /* Must be enough for both EISA and MCA */ | 45 | /* Must be enough for EISA */ |
| 47 | #define MAX_SLOTS 8 | 46 | #define MAX_SLOTS 8 |
| 48 | static __u8 __initdata id_array[MAX_SLOTS] = { [0 ... MAX_SLOTS-1] = 7 }; | 47 | static __u8 __initdata id_array[MAX_SLOTS] = { [0 ... MAX_SLOTS-1] = 7 }; |
| 49 | 48 | ||
| @@ -89,7 +88,7 @@ param_setup(char *str) | |||
| 89 | __setup("sim710=", param_setup); | 88 | __setup("sim710=", param_setup); |
| 90 | 89 | ||
| 91 | static struct scsi_host_template sim710_driver_template = { | 90 | static struct scsi_host_template sim710_driver_template = { |
| 92 | .name = "LSI (Symbios) 710 MCA/EISA", | 91 | .name = "LSI (Symbios) 710 EISA", |
| 93 | .proc_name = "sim710", | 92 | .proc_name = "sim710", |
| 94 | .this_id = 7, | 93 | .this_id = 7, |
| 95 | .module = THIS_MODULE, | 94 | .module = THIS_MODULE, |
| @@ -169,114 +168,6 @@ sim710_device_remove(struct device *dev) | |||
| 169 | return 0; | 168 | return 0; |
| 170 | } | 169 | } |
| 171 | 170 | ||
| 172 | #ifdef CONFIG_MCA | ||
| 173 | |||
| 174 | /* CARD ID 01BB and 01BA use the same pos values */ | ||
| 175 | #define MCA_01BB_IO_PORTS { 0x0000, 0x0000, 0x0800, 0x0C00, 0x1000, 0x1400, \ | ||
| 176 | 0x1800, 0x1C00, 0x2000, 0x2400, 0x2800, \ | ||
| 177 | 0x2C00, 0x3000, 0x3400, 0x3800, 0x3C00, \ | ||
| 178 | 0x4000, 0x4400, 0x4800, 0x4C00, 0x5000 } | ||
| 179 | |||
| 180 | #define MCA_01BB_IRQS { 3, 5, 11, 14 } | ||
| 181 | |||
| 182 | /* CARD ID 004f */ | ||
| 183 | #define MCA_004F_IO_PORTS { 0x0000, 0x0200, 0x0300, 0x0400, 0x0500, 0x0600 } | ||
| 184 | #define MCA_004F_IRQS { 5, 9, 14 } | ||
| 185 | |||
| 186 | static short sim710_mca_id_table[] = { 0x01bb, 0x01ba, 0x004f, 0}; | ||
| 187 | |||
| 188 | static __init int | ||
| 189 | sim710_mca_probe(struct device *dev) | ||
| 190 | { | ||
| 191 | struct mca_device *mca_dev = to_mca_device(dev); | ||
| 192 | int slot = mca_dev->slot; | ||
| 193 | int pos[3]; | ||
| 194 | unsigned int base; | ||
| 195 | int irq_vector; | ||
| 196 | short id = sim710_mca_id_table[mca_dev->index]; | ||
| 197 | static int io_004f_by_pos[] = MCA_004F_IO_PORTS; | ||
| 198 | static int irq_004f_by_pos[] = MCA_004F_IRQS; | ||
| 199 | static int io_01bb_by_pos[] = MCA_01BB_IO_PORTS; | ||
| 200 | static int irq_01bb_by_pos[] = MCA_01BB_IRQS; | ||
| 201 | char *name; | ||
| 202 | int clock; | ||
| 203 | |||
| 204 | pos[0] = mca_device_read_stored_pos(mca_dev, 2); | ||
| 205 | pos[1] = mca_device_read_stored_pos(mca_dev, 3); | ||
| 206 | pos[2] = mca_device_read_stored_pos(mca_dev, 4); | ||
| 207 | |||
| 208 | /* | ||
| 209 | * 01BB & 01BA port base by bits 7,6,5,4,3,2 in pos[2] | ||
| 210 | * | ||
| 211 | * 000000 <disabled> 001010 0x2800 | ||
| 212 | * 000001 <invalid> 001011 0x2C00 | ||
| 213 | * 000010 0x0800 001100 0x3000 | ||
| 214 | * 000011 0x0C00 001101 0x3400 | ||
| 215 | * 000100 0x1000 001110 0x3800 | ||
| 216 | * 000101 0x1400 001111 0x3C00 | ||
| 217 | * 000110 0x1800 010000 0x4000 | ||
| 218 | * 000111 0x1C00 010001 0x4400 | ||
| 219 | * 001000 0x2000 010010 0x4800 | ||
| 220 | * 001001 0x2400 010011 0x4C00 | ||
| 221 | * 010100 0x5000 | ||
| 222 | * | ||
| 223 | * 00F4 port base by bits 3,2,1 in pos[0] | ||
| 224 | * | ||
| 225 | * 000 <disabled> 001 0x200 | ||
| 226 | * 010 0x300 011 0x400 | ||
| 227 | * 100 0x500 101 0x600 | ||
| 228 | * | ||
| 229 | * 01BB & 01BA IRQ is specified in pos[0] bits 7 and 6: | ||
| 230 | * | ||
| 231 | * 00 3 10 11 | ||
| 232 | * 01 5 11 14 | ||
| 233 | * | ||
| 234 | * 00F4 IRQ specified by bits 6,5,4 in pos[0] | ||
| 235 | * | ||
| 236 | * 100 5 101 9 | ||
| 237 | * 110 14 | ||
| 238 | */ | ||
| 239 | |||
| 240 | if (id == 0x01bb || id == 0x01ba) { | ||
| 241 | base = io_01bb_by_pos[(pos[2] & 0xFC) >> 2]; | ||
| 242 | irq_vector = | ||
| 243 | irq_01bb_by_pos[((pos[0] & 0xC0) >> 6)]; | ||
| 244 | |||
| 245 | clock = 50; | ||
| 246 | if (id == 0x01bb) | ||
| 247 | name = "NCR 3360/3430 SCSI SubSystem"; | ||
| 248 | else | ||
| 249 | name = "NCR Dual SIOP SCSI Host Adapter Board"; | ||
| 250 | } else if ( id == 0x004f ) { | ||
| 251 | base = io_004f_by_pos[((pos[0] & 0x0E) >> 1)]; | ||
| 252 | irq_vector = | ||
| 253 | irq_004f_by_pos[((pos[0] & 0x70) >> 4) - 4]; | ||
| 254 | clock = 50; | ||
| 255 | name = "NCR 53c710 SCSI Host Adapter Board"; | ||
| 256 | } else { | ||
| 257 | return -ENODEV; | ||
| 258 | } | ||
| 259 | mca_device_set_name(mca_dev, name); | ||
| 260 | mca_device_set_claim(mca_dev, 1); | ||
| 261 | base = mca_device_transform_ioport(mca_dev, base); | ||
| 262 | irq_vector = mca_device_transform_irq(mca_dev, irq_vector); | ||
| 263 | |||
| 264 | return sim710_probe_common(dev, base, irq_vector, clock, | ||
| 265 | 0, id_array[slot]); | ||
| 266 | } | ||
| 267 | |||
| 268 | static struct mca_driver sim710_mca_driver = { | ||
| 269 | .id_table = sim710_mca_id_table, | ||
| 270 | .driver = { | ||
| 271 | .name = "sim710", | ||
| 272 | .bus = &mca_bus_type, | ||
| 273 | .probe = sim710_mca_probe, | ||
| 274 | .remove = __devexit_p(sim710_device_remove), | ||
| 275 | }, | ||
| 276 | }; | ||
| 277 | |||
| 278 | #endif /* CONFIG_MCA */ | ||
| 279 | |||
| 280 | #ifdef CONFIG_EISA | 171 | #ifdef CONFIG_EISA |
| 281 | static struct eisa_device_id sim710_eisa_ids[] = { | 172 | static struct eisa_device_id sim710_eisa_ids[] = { |
| 282 | { "CPQ4410" }, | 173 | { "CPQ4410" }, |
| @@ -344,10 +235,6 @@ static int __init sim710_init(void) | |||
| 344 | param_setup(sim710); | 235 | param_setup(sim710); |
| 345 | #endif | 236 | #endif |
| 346 | 237 | ||
| 347 | #ifdef CONFIG_MCA | ||
| 348 | err = mca_register_driver(&sim710_mca_driver); | ||
| 349 | #endif | ||
| 350 | |||
| 351 | #ifdef CONFIG_EISA | 238 | #ifdef CONFIG_EISA |
| 352 | err = eisa_driver_register(&sim710_eisa_driver); | 239 | err = eisa_driver_register(&sim710_eisa_driver); |
| 353 | #endif | 240 | #endif |
| @@ -361,11 +248,6 @@ static int __init sim710_init(void) | |||
| 361 | 248 | ||
| 362 | static void __exit sim710_exit(void) | 249 | static void __exit sim710_exit(void) |
| 363 | { | 250 | { |
| 364 | #ifdef CONFIG_MCA | ||
| 365 | if (MCA_bus) | ||
| 366 | mca_unregister_driver(&sim710_mca_driver); | ||
| 367 | #endif | ||
| 368 | |||
| 369 | #ifdef CONFIG_EISA | 251 | #ifdef CONFIG_EISA |
| 370 | eisa_driver_unregister(&sim710_eisa_driver); | 252 | eisa_driver_unregister(&sim710_eisa_driver); |
| 371 | #endif | 253 | #endif |