diff options
author | Alan Cox <alan@lxorguk.ukuu.org.uk> | 2006-10-03 04:14:12 -0400 |
---|---|---|
committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-10-03 11:04:07 -0400 |
commit | bbb3bbdb0f78cb02451daf5687a99627f7ad1140 (patch) | |
tree | 6359d29b2df96f3ac7b89e4f6d75c536126b0794 /drivers/ide/pci | |
parent | ce164428c4cabfd284ca81913415cacd889aac33 (diff) |
[PATCH] non-libata driver for Jmicron devices
Less functional than libata this just uses the merged interface provided for
dumb legacy OS's. This is basically a bridge for people not yet ready to use
libata for some reason or another.
Port visibility is entirely dependant on the BIOS setup.
Signed-off-by: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/ide/pci')
-rw-r--r-- | drivers/ide/pci/Makefile | 1 | ||||
-rw-r--r-- | drivers/ide/pci/jmicron.c | 269 |
2 files changed, 270 insertions, 0 deletions
diff --git a/drivers/ide/pci/Makefile b/drivers/ide/pci/Makefile index f35d684edc25..640a54b09b5a 100644 --- a/drivers/ide/pci/Makefile +++ b/drivers/ide/pci/Makefile | |||
@@ -14,6 +14,7 @@ obj-$(CONFIG_BLK_DEV_HPT366) += hpt366.o | |||
14 | #obj-$(CONFIG_BLK_DEV_HPT37X) += hpt37x.o | 14 | #obj-$(CONFIG_BLK_DEV_HPT37X) += hpt37x.o |
15 | obj-$(CONFIG_BLK_DEV_IT8172) += it8172.o | 15 | obj-$(CONFIG_BLK_DEV_IT8172) += it8172.o |
16 | obj-$(CONFIG_BLK_DEV_IT821X) += it821x.o | 16 | obj-$(CONFIG_BLK_DEV_IT821X) += it821x.o |
17 | obj-$(CONFIG_BLK_DEV_JMICRON) += jmicron.o | ||
17 | obj-$(CONFIG_BLK_DEV_NS87415) += ns87415.o | 18 | obj-$(CONFIG_BLK_DEV_NS87415) += ns87415.o |
18 | obj-$(CONFIG_BLK_DEV_OPTI621) += opti621.o | 19 | obj-$(CONFIG_BLK_DEV_OPTI621) += opti621.o |
19 | obj-$(CONFIG_BLK_DEV_PDC202XX_OLD) += pdc202xx_old.o | 20 | obj-$(CONFIG_BLK_DEV_PDC202XX_OLD) += pdc202xx_old.o |
diff --git a/drivers/ide/pci/jmicron.c b/drivers/ide/pci/jmicron.c new file mode 100644 index 000000000000..68c74bbf8b06 --- /dev/null +++ b/drivers/ide/pci/jmicron.c | |||
@@ -0,0 +1,269 @@ | |||
1 | |||
2 | /* | ||
3 | * Copyright (C) 2006 Red Hat <alan@redhat.com> | ||
4 | * | ||
5 | * May be copied or modified under the terms of the GNU General Public License | ||
6 | */ | ||
7 | |||
8 | #include <linux/config.h> | ||
9 | #include <linux/types.h> | ||
10 | #include <linux/module.h> | ||
11 | #include <linux/pci.h> | ||
12 | #include <linux/delay.h> | ||
13 | #include <linux/hdreg.h> | ||
14 | #include <linux/ide.h> | ||
15 | #include <linux/init.h> | ||
16 | |||
17 | #include <asm/io.h> | ||
18 | |||
19 | typedef enum { | ||
20 | PORT_PATA0 = 0, | ||
21 | PORT_PATA1 = 1, | ||
22 | PORT_SATA = 2, | ||
23 | } port_type; | ||
24 | |||
25 | /** | ||
26 | * jmicron_ratemask - Compute available modes | ||
27 | * @drive: IDE drive | ||
28 | * | ||
29 | * Compute the available speeds for the devices on the interface. This | ||
30 | * is all modes to ATA133 clipped by drive cable setup. | ||
31 | */ | ||
32 | |||
33 | static u8 jmicron_ratemask(ide_drive_t *drive) | ||
34 | { | ||
35 | u8 mode = 4; | ||
36 | if (!eighty_ninty_three(drive)) | ||
37 | mode = min(mode, (u8)1); | ||
38 | return mode; | ||
39 | } | ||
40 | |||
41 | /** | ||
42 | * ata66_jmicron - Cable check | ||
43 | * @hwif: IDE port | ||
44 | * | ||
45 | * Return 1 if the cable is 80pin | ||
46 | */ | ||
47 | |||
48 | static int __devinit ata66_jmicron(ide_hwif_t *hwif) | ||
49 | { | ||
50 | struct pci_dev *pdev = hwif->pci_dev; | ||
51 | |||
52 | u32 control; | ||
53 | u32 control5; | ||
54 | |||
55 | int port = hwif->channel; | ||
56 | port_type port_map[2]; | ||
57 | |||
58 | pci_read_config_dword(pdev, 0x40, &control); | ||
59 | |||
60 | /* There are two basic mappings. One has the two SATA ports merged | ||
61 | as master/slave and the secondary as PATA, the other has only the | ||
62 | SATA port mapped */ | ||
63 | if (control & (1 << 23)) { | ||
64 | port_map[0] = PORT_SATA; | ||
65 | port_map[1] = PORT_PATA0; | ||
66 | } else { | ||
67 | port_map[0] = PORT_SATA; | ||
68 | port_map[1] = PORT_SATA; | ||
69 | } | ||
70 | |||
71 | /* The 365/366 may have this bit set to map the second PATA port | ||
72 | as the internal primary channel */ | ||
73 | pci_read_config_dword(pdev, 0x80, &control5); | ||
74 | if (control5 & (1<<24)) | ||
75 | port_map[0] = PORT_PATA1; | ||
76 | |||
77 | /* The two ports may then be logically swapped by the firmware */ | ||
78 | if (control & (1 << 22)) | ||
79 | port = port ^ 1; | ||
80 | |||
81 | /* | ||
82 | * Now we know which physical port we are talking about we can | ||
83 | * actually do our cable checking etc. Thankfully we don't need | ||
84 | * to do the plumbing for other cases. | ||
85 | */ | ||
86 | switch (port_map[port]) | ||
87 | { | ||
88 | case PORT_PATA0: | ||
89 | if (control & (1 << 3)) /* 40/80 pin primary */ | ||
90 | return 1; | ||
91 | return 0; | ||
92 | case PORT_PATA1: | ||
93 | if (control5 & (1 << 19)) /* 40/80 pin secondary */ | ||
94 | return 0; | ||
95 | return 1; | ||
96 | case PORT_SATA: | ||
97 | return 1; | ||
98 | } | ||
99 | } | ||
100 | |||
101 | static void jmicron_tuneproc (ide_drive_t *drive, byte mode_wanted) | ||
102 | { | ||
103 | return; | ||
104 | } | ||
105 | |||
106 | /** | ||
107 | * config_jmicron_chipset_for_pio - set drive timings | ||
108 | * @drive: drive to tune | ||
109 | * @speed we want | ||
110 | * | ||
111 | */ | ||
112 | |||
113 | static void config_jmicron_chipset_for_pio (ide_drive_t *drive, byte set_speed) | ||
114 | { | ||
115 | u8 speed = XFER_PIO_0 + ide_get_best_pio_mode(drive, 255, 5, NULL); | ||
116 | if (set_speed) | ||
117 | (void) ide_config_drive_speed(drive, speed); | ||
118 | } | ||
119 | |||
120 | /** | ||
121 | * jmicron_tune_chipset - set controller timings | ||
122 | * @drive: Drive to set up | ||
123 | * @xferspeed: speed we want to achieve | ||
124 | * | ||
125 | * As the JMicron snoops for timings all we actually need to do is | ||
126 | * make sure we don't set an invalid mode. We do need to honour | ||
127 | * the cable detect here. | ||
128 | */ | ||
129 | |||
130 | static int jmicron_tune_chipset (ide_drive_t *drive, byte xferspeed) | ||
131 | { | ||
132 | |||
133 | u8 speed = ide_rate_filter(jmicron_ratemask(drive), xferspeed); | ||
134 | |||
135 | return ide_config_drive_speed(drive, speed); | ||
136 | } | ||
137 | |||
138 | /** | ||
139 | * config_chipset_for_dma - configure for DMA | ||
140 | * @drive: drive to configure | ||
141 | * | ||
142 | * As the JMicron snoops for timings all we actually need to do is | ||
143 | * make sure we don't set an invalid mode. | ||
144 | */ | ||
145 | |||
146 | static int config_chipset_for_dma (ide_drive_t *drive) | ||
147 | { | ||
148 | u8 speed = ide_dma_speed(drive, jmicron_ratemask(drive)); | ||
149 | |||
150 | config_jmicron_chipset_for_pio(drive, !speed); | ||
151 | jmicron_tune_chipset(drive, speed); | ||
152 | return ide_dma_enable(drive); | ||
153 | } | ||
154 | |||
155 | /** | ||
156 | * jmicron_configure_drive_for_dma - set up for DMA transfers | ||
157 | * @drive: drive we are going to set up | ||
158 | * | ||
159 | * As the JMicron snoops for timings all we actually need to do is | ||
160 | * make sure we don't set an invalid mode. | ||
161 | */ | ||
162 | |||
163 | static int jmicron_config_drive_for_dma (ide_drive_t *drive) | ||
164 | { | ||
165 | ide_hwif_t *hwif = drive->hwif; | ||
166 | |||
167 | if (ide_use_dma(drive)) { | ||
168 | if (config_chipset_for_dma(drive)) | ||
169 | return hwif->ide_dma_on(drive); | ||
170 | } | ||
171 | config_jmicron_chipset_for_pio(drive, 1); | ||
172 | return hwif->ide_dma_off_quietly(drive); | ||
173 | } | ||
174 | |||
175 | /** | ||
176 | * init_hwif_jmicron - set up hwif structs | ||
177 | * @hwif: interface to set up | ||
178 | * | ||
179 | * Minimal set up is required for the Jmicron hardware. | ||
180 | */ | ||
181 | |||
182 | static void __devinit init_hwif_jmicron(ide_hwif_t *hwif) | ||
183 | { | ||
184 | hwif->speedproc = &jmicron_tune_chipset; | ||
185 | hwif->tuneproc = &jmicron_tuneproc; | ||
186 | |||
187 | hwif->drives[0].autotune = 1; | ||
188 | hwif->drives[1].autotune = 1; | ||
189 | |||
190 | if (!hwif->dma_base) | ||
191 | goto fallback; | ||
192 | |||
193 | hwif->atapi_dma = 1; | ||
194 | hwif->ultra_mask = 0x7f; | ||
195 | hwif->mwdma_mask = 0x07; | ||
196 | |||
197 | hwif->ide_dma_check = &jmicron_config_drive_for_dma; | ||
198 | if (!(hwif->udma_four)) | ||
199 | hwif->udma_four = ata66_jmicron(hwif); | ||
200 | |||
201 | hwif->autodma = 1; | ||
202 | hwif->drives[0].autodma = hwif->autodma; | ||
203 | hwif->drives[1].autodma = hwif->autodma; | ||
204 | return; | ||
205 | fallback: | ||
206 | hwif->autodma = 0; | ||
207 | return; | ||
208 | } | ||
209 | |||
210 | #define DECLARE_JMB_DEV(name_str) \ | ||
211 | { \ | ||
212 | .name = name_str, \ | ||
213 | .init_hwif = init_hwif_jmicron, \ | ||
214 | .channels = 2, \ | ||
215 | .autodma = AUTODMA, \ | ||
216 | .bootable = ON_BOARD, \ | ||
217 | .enablebits = { {0x40, 1, 1}, {0x40, 0x10, 0x10} }, \ | ||
218 | } | ||
219 | |||
220 | static ide_pci_device_t jmicron_chipsets[] __devinitdata = { | ||
221 | /* 0 */ DECLARE_JMB_DEV("JMB361"), | ||
222 | /* 1 */ DECLARE_JMB_DEV("JMB363"), | ||
223 | /* 2 */ DECLARE_JMB_DEV("JMB365"), | ||
224 | /* 3 */ DECLARE_JMB_DEV("JMB366"), | ||
225 | /* 4 */ DECLARE_JMB_DEV("JMB368"), | ||
226 | }; | ||
227 | |||
228 | /** | ||
229 | * jmicron_init_one - pci layer discovery entry | ||
230 | * @dev: PCI device | ||
231 | * @id: ident table entry | ||
232 | * | ||
233 | * Called by the PCI code when it finds a Jmicron controller. | ||
234 | * We then use the IDE PCI generic helper to do most of the work. | ||
235 | */ | ||
236 | |||
237 | static int __devinit jmicron_init_one(struct pci_dev *dev, const struct pci_device_id *id) | ||
238 | { | ||
239 | ide_setup_pci_device(dev, &jmicron_chipsets[id->driver_data]); | ||
240 | return 0; | ||
241 | } | ||
242 | |||
243 | static struct pci_device_id jmicron_pci_tbl[] = { | ||
244 | { PCI_DEVICE(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB361), 0}, | ||
245 | { PCI_DEVICE(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB363), 1}, | ||
246 | { PCI_DEVICE(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB365), 2}, | ||
247 | { PCI_DEVICE(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB366), 3}, | ||
248 | { PCI_DEVICE(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB368), 4}, | ||
249 | { 0, }, | ||
250 | }; | ||
251 | |||
252 | MODULE_DEVICE_TABLE(pci, jmicron_pci_tbl); | ||
253 | |||
254 | static struct pci_driver driver = { | ||
255 | .name = "JMicron IDE", | ||
256 | .id_table = jmicron_pci_tbl, | ||
257 | .probe = jmicron_init_one, | ||
258 | }; | ||
259 | |||
260 | static int __init jmicron_ide_init(void) | ||
261 | { | ||
262 | return ide_pci_register_driver(&driver); | ||
263 | } | ||
264 | |||
265 | module_init(jmicron_ide_init); | ||
266 | |||
267 | MODULE_AUTHOR("Alan Cox"); | ||
268 | MODULE_DESCRIPTION("PCI driver module for the JMicron in legacy modes"); | ||
269 | MODULE_LICENSE("GPL"); | ||