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path: root/drivers/net/wireless/iwlwifi/iwl-eeprom.c
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* iwlagn: all function iwl-io.c receive iwl_busEmmanuel Grumbach2011-08-29
| | | | | | | | Which means that iwl-io.c doesn't need to include iwl-dev.h any more. Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* iwlagn: Rename iwlcore prefixWey-Yi Guy2011-08-29
| | | | | | | | | | There are number of functions with "iwlcore_" prefix which not feels right, rename those to "iwl_". No functional changes by making the renames. Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* iwlagn: remove dual-indirect call to simply the codeWey-Yi Guy2011-07-16
| | | | | | After driver split, no need to make the code so complex Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
* iwlagn: remove indirection for eeprom_query_addrFry, Donald H2011-07-11
| | | | | | | | Not needed since the driver split. Eliminate redundant routine. Signed-off-by: Don Fry <donald.h.fry@intel.com> Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* iwlagn: remove the indirection for iwl_apm_initFry, Donald H2011-07-11
| | | | | | | | Not needed since the driver split. Signed-off-by: Don Fry <donald.h.fry@intel.com> Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* iwlagn: merge duplicate code into single functionWey-Yi Guy2011-06-18
| | | | | | Same operation needed by multiple devices, move to single function. Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
* iwlagn: remove set but unused varsJohannes Berg2011-05-13
| | | | | | | | | gcc is warning that a few variables in rate scaling are set but never otherwise used. This pointed out a few simplifications. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
* iwlagn: semaphore and calib cleanupDon Fry2011-04-30
| | | | | | | | | All agn devices use the same eeprom semaphore and calib version routines. Delete the indirection and move the semaphore routines to where they are used and make static. Signed-off-by: Don Fry <donald.h.fry@intel.com> Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
* iwlagn: fix tx power initializationStanislaw Gruszka2011-04-29
| | | | | | | | | | | | | | | | | | | | | | | Since commit f844a709a7d8f8be61a571afc31dfaca9e779621 Author: Stanislaw Gruszka <sgruszka@redhat.com> Date: Fri Jan 28 16:47:44 2011 +0100 iwlwifi: do not set tx power when channel is changing we set device tx power during initialization to priv->tx_power_next, which itself is initialized to minimum power. That changed default behaviour of driver. Previously we initialized device to transmit at maximum available power by default. Patch change again to previous behaviour and cleanup tx power initialization. Fortunately this is not critical fix, as mac80211 layer setup tx power lately to 14dB, hence device does not operate at minimal transmit power all the time. Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* iwlagn: remove most BUG_ON instancesJohannes Berg2011-04-18
| | | | | | | | | | | | | | | There are a number of things in the driver that may result in a BUG(), which is suboptimal since it's hard to get debugging information out of the driver in that case and the user experience is also not good :-) Almost all BUG_ON instances can be converted to WARN_ON with a few lines of appropriate error handling, so do that instead. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
* iwlagn: move IO functions out of lineJohannes Berg2011-04-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | This generates a massive reduction in module size: with debug: text data bss dec hex filename 670300 13136 420 683856 a6f50 iwlagn.ko (before) 388347 13136 408 401891 621e3 iwlagn.ko (after) without debug: text data bss dec hex filename 528575 13072 420 542067 84573 iwlagn.ko (before) 294192 13072 408 307672 4b1d8 iwlagn.ko (after) This also removes all the IO debug functionality since it can easily be replaced by tracing, and makes the code unnecessarily complex. I haven't done any CPU utilisation measurements, but given that the hotpaths don't use much IO it is not likely to have a negative impact; in fact, the size reduction will reduce cache pressure which possibly improves performance. Finally, an unused function or two were removed. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* iwlagn: remove hw_revJohannes Berg2011-04-07
| | | | | | | | | The hw_rev variable is used only during init, so there's no need to keep it around. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* iwlagn: change Copyright to 2011Wey-Yi Guy2011-04-07
| | | | | Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* iwlagn: remove reference to 3945 and 4965Wey-Yi Guy2011-03-25
| | | | | | After driver split, remove the unused reference to 3945 and 4965 Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
* iwlwifi: split the drivers for agn and legacy devices 3945/4965Wey-Yi Guy2011-02-21
| | | | | | | | | | | | | | | | | | Intel WiFi devices 3945 and 4965 now have their own driver in the folder drivers/net/wireless/iwlegacy Add support to build these drivers independently of the driver for AGN devices. Selecting the 3945 builds iwl3945.ko and iwl_legacy.ko, and selecting the 4965 builds iwl4965.ko and iwl_legacy.ko. iwl-legacy.ko contains code shared between both devices. The 3945 is an ABG/BG device, with no support for 802.11n. The 4965 is a 2x3 ABGN device. Signed-off-by: Meenakshi Venkataraman <meenakshi.venkataraman@intel.com> Acked-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
* Revert "iwlwifi: split the drivers for agn and legacy devices 3945/4965"Wey-Yi Guy2011-02-21
| | | | This reverts commit aa833c4b1a928b8d3c4fcc2faaa0d6b81ea02b56.
* iwlwifi: split the drivers for agn and legacy devices 3945/4965Wey-Yi Guy2011-02-21
| | | | | | | | | | | | | | | | | | Intel WiFi devices 3945 and 4965 now have their own driver in the folder drivers/net/wireless/iwlegacy Add support to build these drivers independently of the driver for AGN devices. Selecting the 3945 builds iwl3945.ko and iwl_legacy.ko, and selecting the 4965 builds iwl4965.ko and iwl_legacy.ko. iwl-legacy.ko contains code shared between both devices. The 3945 is an ABG/BG device, with no support for 802.11n. The 4965 is a 2x3 ABGN device. Signed-off-by: Meenakshi Venkataraman <meenakshi.venkataraman@intel.com> Acked-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
* iwlwifi: use IWL_DEBUG_EEPROM for EEPROM related infoWey-Yi Guy2010-12-13
| | | | | | | For logging EEPROM related info, instead of using IWL_DEBUG_INFO, use the dedicated logging (IWL_DEBUG_EEPROM) for easier debugging Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
* iwlwifi: move agn only eeprom functions to separate fileWey-Yi Guy2010-10-14
| | | | | | | | Some of the functions in iwl-eeprom.c file are for agn devices only, Those functions do not have to be part of iwlcore.ko, so move those to iwl-agn-eeprom.c file. Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
* iwlwifi: remove apm_ops.stopJohannes Berg2010-10-07
| | | | | | | | Since all devices share the same operation here, there's no need to call it indirectly. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
* iwlwifi: remove verify_signature eeprom operationJohannes Berg2010-10-07
| | | | | | | | | All drivers share the same implementation, so there's no need to call this via a function pointer nor to export it. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
* iwlagn: reduce redundant parameter definitionsWey-Yi Guy2010-10-06
| | | | | | | | | | | | | move paramater definitions to a device paramater structure only leaving the device name, which antennas are used and what firmware file to use in the iwl_cfg structure. this will not completely remove the redundancies but greatly reduce them for devices that only vary by name or antennas. the parameters that are more likely to change within a given device family are left in iwl_cfg. also separate bt param structure added to help reduce more. Signed-off-by: Jay Sternberg <jay.e.sternberg@intel.com> Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
* iwlwifi: enable DC calibration based on config parameterWey-Yi Guy2010-06-25
| | | | | | | | | Different devices have different calibration requirement, some need DC calibration and some don't; make it a cfg parameter for easy management. Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
* Merge branch 'master' of ↵John W. Linville2010-05-17
|\ | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6 into for-davem
| * iwlwifi: move eeprom version printout to eeprom initJohannes Berg2010-05-10
| | | | | | | | | | | | | | | | | | It doesn't belong into firmware loading, it should instead be printed after loading the EEPROM. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
* | include cleanup: Update gfp.h and slab.h includes to prepare for breaking ↵Tejun Heo2010-03-30
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | implicit slab.h inclusion from percpu.h percpu.h is included by sched.h and module.h and thus ends up being included when building most .c files. percpu.h includes slab.h which in turn includes gfp.h making everything defined by the two files universally available and complicating inclusion dependencies. percpu.h -> slab.h dependency is about to be removed. Prepare for this change by updating users of gfp and slab facilities include those headers directly instead of assuming availability. As this conversion needs to touch large number of source files, the following script is used as the basis of conversion. http://userweb.kernel.org/~tj/misc/slabh-sweep.py The script does the followings. * Scan files for gfp and slab usages and update includes such that only the necessary includes are there. ie. if only gfp is used, gfp.h, if slab is used, slab.h. * When the script inserts a new include, it looks at the include blocks and try to put the new include such that its order conforms to its surrounding. It's put in the include block which contains core kernel includes, in the same order that the rest are ordered - alphabetical, Christmas tree, rev-Xmas-tree or at the end if there doesn't seem to be any matching order. * If the script can't find a place to put a new include (mostly because the file doesn't have fitting include block), it prints out an error message indicating which .h file needs to be added to the file. The conversion was done in the following steps. 1. The initial automatic conversion of all .c files updated slightly over 4000 files, deleting around 700 includes and adding ~480 gfp.h and ~3000 slab.h inclusions. The script emitted errors for ~400 files. 2. Each error was manually checked. Some didn't need the inclusion, some needed manual addition while adding it to implementation .h or embedding .c file was more appropriate for others. This step added inclusions to around 150 files. 3. The script was run again and the output was compared to the edits from #2 to make sure no file was left behind. 4. Several build tests were done and a couple of problems were fixed. e.g. lib/decompress_*.c used malloc/free() wrappers around slab APIs requiring slab.h to be added manually. 5. The script was run on all .h files but without automatically editing them as sprinkling gfp.h and slab.h inclusions around .h files could easily lead to inclusion dependency hell. Most gfp.h inclusion directives were ignored as stuff from gfp.h was usually wildly available and often used in preprocessor macros. Each slab.h inclusion directive was examined and added manually as necessary. 6. percpu.h was updated not to include slab.h. 7. Build test were done on the following configurations and failures were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my distributed build env didn't work with gcov compiles) and a few more options had to be turned off depending on archs to make things build (like ipr on powerpc/64 which failed due to missing writeq). * x86 and x86_64 UP and SMP allmodconfig and a custom test config. * powerpc and powerpc64 SMP allmodconfig * sparc and sparc64 SMP allmodconfig * ia64 SMP allmodconfig * s390 SMP allmodconfig * alpha SMP allmodconfig * um on x86_64 SMP allmodconfig 8. percpu.h modifications were reverted so that it could be applied as a separate patch and serve as bisection point. Given the fact that I had only a couple of failures from tests on step 6, I'm fairly confident about the coverage of this conversion patch. If there is a breakage, it's likely to be something in one of the arch headers which should be easily discoverable easily on most builds of the specific arch. Signed-off-by: Tejun Heo <tj@kernel.org> Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
* iwlwifi: update copyright year to 2010Reinette Chatre2010-01-19
| | | | | Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* iwlwifi: fix 40MHz operation setting on cards that do not allow itReinette Chatre2009-12-21
| | | | | | | | | | | Some devices have 40MHz operation disabled entirely. Ensure that driver do not enable 40MHz operation if a channel does not allow this. This fixes http://bugzilla.intellinuxwireless.org/show_bug.cgi?id=2135 Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> CC: stable@kernel.org Signed-off-by: John W. Linville <linville@tuxdriver.com>
* iwlwifi: fix EEPROM/OTP reading endian annotations and a bugJohannes Berg2009-12-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The construct "le16_to_cpu((__force __le16)(r >> 16))" has always bothered me when looking through the iwlwifi code, it shouldn't be necessary to __force anything, and before this code, "r" was obtained with an ioread32, which swaps each of the two u16 values in it properly when swapping the entire u32 value. I've had arguments about this code with people before, but always conceded they were right because removing it only made things not work at all on big endian platforms. However, analysing a failure of the OTP reading code, I now finally figured out what is going on, and why my intuition about that code being wrong was right all along. It turns out that the 'priv->eeprom' u8 array really wants to have the data in it in little endian. So the force code above and all really converts *to* little endian, not from it. Cf., for instance, the function iwl_eeprom_query16() -- it reads two u8 values and combines them into a u16, in a little-endian way. And considering it more, it makes sense to have the eeprom array as on the device, after all not all values really are 16-bit values, the MAC address for instance is not. Now, what this really means is that all the annotations are completely wrong. The eeprom reading code should fill the priv->eeprom array as a __le16 array, with __le16 values. This also means that iwl_read_otp_word() should really have a __le16 pointer as the data argument, since it should be filling that in a format suitable for priv->eeprom. Propagating these changes throughout, iwl_find_otp_image() is found to be, now obviously visible, defective -- it uses the data returned by iwl_read_otp_word() directly as if it was CPU endianness. Fixing that, which is this hunk of the patch: - next_link_addr = link_value * sizeof(u16); + next_link_addr = le16_to_cpu(link_value) * sizeof(u16); is the only real change of this patch. Everything else is just fixing the sparse annotations. Also, the bug only shows up on big endian platforms with a 1000 series card. 5000 and previous series do not use OTP, and 6000 series has shadow RAM support which means we don't ever use the defective code on any cards but 1000. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Cc: stable@kernel.org Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* iwlwifi: power up all devices for EEPROM readReinette Chatre2009-12-21
| | | | | | | | | | | | | | | | | | | | | | Recent commits "iwlwifi: remove power-wasting calls to apm_ops.init()" and "iwlagn: power up device before initializing EEPROM" had the goal of reducing device power consumption from the time the module is loaded until the interface is brought up and the device's power saving mechanisms kick in. The idea is that once the module is loaded there is no need for the device to consume power until the interface is brought up. With the current solution the device is only powered up during EEPROM read, and then so also only if the EEPROM type is OTP. We have found that on certain platforms even non-OTP devices require power to be up during EEPROM read. On these platforms the driver never loads and the system log contains the following: iwlagn 0000:03:00.0: MAC is in deep sleep!. CSR_GP_CNTRL = 0x080403D8 We thus now power up all devices during EEPROM read. Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* iwlagn: power up device before initializing EEPROMReinette Chatre2009-11-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A recent change optimized the power usage by the device by only powering it up during EEPROM load if it is required (for OTP devices). This change causes an error on the 1000 series devices during module load. The error looks as follows: [ 1624.024524] iwlagn: Intel(R) Wireless WiFi Link AGN driver for Linux, 1.3.27kds [ 1624.024527] iwlagn: Copyright(c) 2003-2009 Intel Corporation [ 1624.024711] iwlagn 0000:01:00.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16 [ 1624.024749] iwlagn 0000:01:00.0: setting latency timer to 64 [ 1624.024909] iwlagn 0000:01:00.0: Detected Intel Wireless WiFi Link 1000 Series BGN REV=0x6C [ 1624.081263] iwlagn 0000:01:00.0: MAC is in deep sleep!. CSR_GP_CNTRL = 0x080003D8 [ 1624.092967] iwlagn 0000:01:00.0: OTP is empty [ 1624.092988] iwlagn 0000:01:00.0: Unable to init EEPROM [ 1624.093033] iwlagn 0000:01:00.0: PCI INT A disabled [ 1624.093065] iwlagn: probe of 0000:01:00.0 failed with error -2 Adding a dump_stack() to where that error is printed shows the following: [ 1624.024524] iwlagn: Intel(R) Wireless WiFi Link AGN driver for Linux, 1.3.27kds [ 1624.024527] iwlagn: Copyright(c) 2003-2009 Intel Corporation [ 1624.024711] iwlagn 0000:01:00.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16 [ 1624.024749] iwlagn 0000:01:00.0: setting latency timer to 64 [ 1624.024909] iwlagn 0000:01:00.0: Detected Intel Wireless WiFi Link 1000 Series BGN REV=0x6C [ 1624.081263] iwlagn 0000:01:00.0: MAC is in deep sleep!. CSR_GP_CNTRL = 0x080003D8 [ 1624.081263] Pid: 3073, comm: work_for_cpu Tainted: G W 2.6.31.5 #4 [ 1624.081263] Call Trace: [ 1624.081263] [<ffffffffa02395db>] T.726+0x22b/0x420 [iwlcore] [ 1624.081263] [<ffffffffa023985a>] iwlcore_eeprom_acquire_semaphore+0x8a/0x190 [iwlcore] [ 1624.081263] [<ffffffff81110c94>] ? __kmalloc+0x194/0x1c0 [ 1624.081263] [<ffffffffa02391f5>] ? iwlcore_eeprom_verify_signature+0x25/0xf0 [iwlcore] [ 1624.081263] [<ffffffffa0239c67>] iwl_eeprom_init+0x107/0xf40 [iwlcore] [ 1624.081263] [<ffffffffa026ab9c>] ? iwl_prepare_card_hw+0x11c/0x470 [iwlagn] [ 1624.081263] [<ffffffff8127e2a4>] ? pci_bus_write_config_byte+0x64/0x80 [ 1624.081263] [<ffffffffa026b1f8>] iwl_pci_probe+0x308/0xac0 [iwlagn] [ 1624.081263] [<ffffffff810710a0>] ? do_work_for_cpu+0x0/0x30 [ 1624.081263] [<ffffffff81284912>] local_pci_probe+0x12/0x20 [ 1624.081263] [<ffffffff810710b3>] do_work_for_cpu+0x13/0x30 [ 1624.081263] [<ffffffff81075826>] kthread+0xa6/0xb0 [ 1624.081263] [<ffffffff81012fea>] child_rip+0xa/0x20 [ 1624.081263] [<ffffffff81075780>] ? kthread+0x0/0xb0 [ 1624.081263] [<ffffffff81012fe0>] ? child_rip+0x0/0x20 [ 1624.092967] iwlagn 0000:01:00.0: OTP is empty [ 1624.092988] iwlagn 0000:01:00.0: Unable to init EEPROM [ 1624.093033] iwlagn 0000:01:00.0: PCI INT A disabled [ 1624.093065] iwlagn: probe of 0000:01:00.0 failed with error -2 We know that the routines in this trace, iwlcore_eeprom_acquire_semaphore and iwlcore_eeprom_verify_signature, only access CSR registers and thus do not need the device to be awake if it is EEPROM. But for OTP it is required for the device to be awake to read these registers. Ensure device is awake before accessing these registers. Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Acked-by: Ben Cahill <ben.m.cahill@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* iwlwifi: eliminate the possible 1/2 dBm tx power loss in 6x00 & 6x50 seriesWey-Yi Guy2009-11-18
| | | | | | | | | | | | | | | | In both 6x00 and 6x50 series, the enhanced/extended tx power table in EEPROM is used to set the max. tx power limit. This new tx power table is in 1/2 dBm format, which creates an issue of possibility of 1/2 dBm loss when driver set the tx power limit; because of driver keep track and report the tx power in dBm format. In order to prevent the 1/2 dBm loss, keep track of the true max tx power in 1/2 dBm format in driver; do the comparison and adjust the tx power if needed when send tx power command to uCode. Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* iwlwifi: remove unused parameter from iwl_channel_infoWey-Yi Guy2009-11-18
| | | | | | | | | Number of HT40 power parameters are not used; remove those from iwl_channel_info data structure Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* iwlwifi: validate enhanced tx power entryWey-Yi Guy2009-11-18
| | | | | | | | | | | Validate enhanced tx power entry read from EEPROM before applying the tx power value. Different versions of EEPROM might contain different size of table; always a good idea to make sure the entry is valid before applying to the targeted channel. Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* iwlwifi: remove power-wasting calls to apm_ops.init()Ben Cahill2009-11-02
| | | | | | | | | | | | | | | | | | To save power, don't run apm_ops.init() until needed at "up" time. EEPROM (5000 and earlier devices) may be read without running apm_ops.init(), but OTP reads (6000 and newer devices) require a powered-up chip. Therefore, remove apm_ops.init() from the general path in XXXX_pci_probe(), and call it only if device uses OTP. Once done with OTP read, call apm_ops.stop() to reset chip and save power until "up" time comes around. NOTE: This patch depends on removal of priv->lock from iwl_apm_stop(); lock does not get initialized until later in flow. See patch "remove unneeded locks from apm_stop()". Signed-off-by: Ben Cahill <ben.m.cahill@intel.com> Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* iwlwifi: set auto clock gate disable bit for 6x00/6x50 seriesWey-Yi Guy2009-10-27
| | | | | | | | | For 6x00 and 6x50 series NIC with OTP shadow RAM, set auto clock gate disable bit when initializing OTP access. Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* Merge branch 'master' of ↵David S. Miller2009-10-12
|\ | | | | | | master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
| * iwlwifi: incorrect method used for finding valid OTP blocksJay Sternberg2009-10-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The address stored in the next link address is a word address but when reading the OTP blocks, a byte address is used. Also if the blocks are full and the last link pointer is not zero, then none of the blocks are valid so return an error. The algorithm is simply valid blocks have a next address and that address's contents is zero. Using the wrong address for the next link address gets arbitrary data, obviously. In cases seen, the first block is considered valid when it is not. If the block has in fact been invalidated there may be old data or there may be no data, bad data, or partial data, there is no way of telling. Without this patch it is possible that a device with valid OTP data is unable to work. Signed-off-by: Jay Sternberg <jay.e.sternberg@intel.com> Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> CC: stable@kernel.org Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | iwlwifi: validate the signature for EEPROM and OTPWey-Yi Guy2009-10-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Both 1000 & 6000 series NICs contain on-chip OTP memory that replaces the off-chip EEPROM memory. The nature of OTP means there is a limited number of times a particular board can go through the factory flow and be (re)calibrated. As a consequence there will be some boards that contain EEPROM memory because OTP blocks were full. In the signature validation routine, iwlwifi needs to make sure "select bit" and "EEPROM/OTP signature" agree on the type of NVM to be used to configure the system. Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | iwlwifi: replace iwl_poll_direct_bit with iwl_poll_bit for CSR accessAbhijeet Kolekar2009-10-07
|/ | | | | | | | | | Replace iwl_poll_direct_bit with iwl_poll_bit when accessing CSR registers. There is no need to power up the mac to access CSR registers. Signed-off-by: Abhijeet Kolekar <abhijeet.kolekar@intel.com> Acked-by: Ben M Cahill <ben.m.cahill@intel.com> Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* iwlwifi: read enhanced tx power info from EEPROM imageWey-Yi Guy2009-08-28
| | | | | | | | | | | | | | | | | | | For 6000 series and up, additional enhanced regulatory tx power limitation information is added to EEPROM image. In order to setup the tx power limitation per channel correctly. Read the enhanced tx power information from EEPROM image and update accordingly. The information is provided per SISO (a,b,c) chain based, it also has information for both MIMO2 and MIMO3. For tx power regulatory limitation, take the highest number from all the chains and update. Also update tx_power_user_lmt to the highest power supported by any channels and chains Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* iwlwifi: traverse linklist to find the valid OTP blockWey-Yi Guy2009-08-20
| | | | | | | | | | | | | | | | | | For devices using OTP memory, EEPROM image can start from any one of the OTP blocks. If shadow RAM is disabled, we need to traverse link list to find the last valid block, then start the EEPROM image reading. If OTP is not full, the valid block is the block _before_ the last block on the link list; the last block on the link list is the empty block ready for next OTP refresh/update. If OTP is full, then the last block is the valid block to be used for configure the device. Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* iwlwifi: cleanup HT40 extension channels setupZhu Yi2009-08-20
| | | | | | | | | The patch cleans up the HT40 extension channels setup for EEPROM band 6 and 7 to make it more readable. Signed-off-by: Zhu Yi <yi.zhu@intel.com> Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* iwlwifi: name changed from "fat" to "ht40"Wey-Yi Guy2009-08-14
| | | | | | | | | Rename "fat" to "ht40" The term "fat channel" is deprecated in favor of "HT40" Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* iwlwifi: checking unknown HW typeWey-Yi Guy2009-07-24
| | | | | | | | | | When deciding NVM type, if the HW type is unknown, report error and exit with -ENOENT. This check should prevent incorrect behavior by assuming the wrong NVM type. Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* iwlwifi: fix otp access initReinette Chatre2009-06-03
| | | | | | | | | Polling function returns positive time if polling was needed to read value. This is still success. Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> CC: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* iwlcore: register locksMohamed Abbas2009-05-22
| | | | | | | | | | | | | | | Add new lock to be used when accessing some registers. Also move the register lock and iwl_grab_nic_access inside the function for register access. This will prevent from forgetting to hold locks and nic access in the right way and make code easier to maintain. We over use the priv->lock spin lock and I guess we need to add new one for Tx queue after that we might need to change most of these lock to BH and just keep priv->lock as irq type. Signed-off-by: Mohamed Abbas <mohamed.abbas@intel.com> Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* iwlwifi: support NVM access (EEPROM/OTP)Wey-Yi Guy2009-05-22
| | | | | | | | | Two type of NVM available for devices 1000, 6000 and after, adding support to read OTP lower blocks if OTP is used instead of EEPROM. Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* wireless: rename IEEE80211_CHAN_NO_FAT_* to HT40-/+Luis R. Rodriguez2009-05-20
| | | | | | | | This is more consistent with our nl80211 naming convention for HT40-/+. Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* iwlwifi: more descriptive unsupported hardware messageReinette Chatre2009-05-11
| | | | | | | | | Somehow these pre-production cards are showing up in the community. With this message we hope that it will be clear that the hardware is not supported. Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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