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Commit | Line | Data |
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1da177e4 | 1 | /* |
485efc6c | 2 | * linux/drivers/ide/pci/atiixp.c Version 0.02 Jun 16 2007 |
1da177e4 LT |
3 | * |
4 | * Copyright (C) 2003 ATI Inc. <hyu@ati.com> | |
485efc6c | 5 | * Copyright (C) 2004,2007 Bartlomiej Zolnierkiewicz |
1da177e4 LT |
6 | */ |
7 | ||
1da177e4 LT |
8 | #include <linux/types.h> |
9 | #include <linux/module.h> | |
10 | #include <linux/kernel.h> | |
11 | #include <linux/ioport.h> | |
12 | #include <linux/pci.h> | |
13 | #include <linux/hdreg.h> | |
14 | #include <linux/ide.h> | |
15 | #include <linux/delay.h> | |
16 | #include <linux/init.h> | |
17 | ||
18 | #include <asm/io.h> | |
19 | ||
20 | #define ATIIXP_IDE_PIO_TIMING 0x40 | |
21 | #define ATIIXP_IDE_MDMA_TIMING 0x44 | |
22 | #define ATIIXP_IDE_PIO_CONTROL 0x48 | |
23 | #define ATIIXP_IDE_PIO_MODE 0x4a | |
24 | #define ATIIXP_IDE_UDMA_CONTROL 0x54 | |
25 | #define ATIIXP_IDE_UDMA_MODE 0x56 | |
26 | ||
27 | typedef struct { | |
28 | u8 command_width; | |
29 | u8 recover_width; | |
30 | } atiixp_ide_timing; | |
31 | ||
32 | static atiixp_ide_timing pio_timing[] = { | |
33 | { 0x05, 0x0d }, | |
34 | { 0x04, 0x07 }, | |
35 | { 0x03, 0x04 }, | |
36 | { 0x02, 0x02 }, | |
37 | { 0x02, 0x00 }, | |
38 | }; | |
39 | ||
40 | static atiixp_ide_timing mdma_timing[] = { | |
41 | { 0x07, 0x07 }, | |
42 | { 0x02, 0x01 }, | |
43 | { 0x02, 0x00 }, | |
44 | }; | |
45 | ||
46 | static int save_mdma_mode[4]; | |
47 | ||
6c5f8cc3 AC |
48 | static DEFINE_SPINLOCK(atiixp_lock); |
49 | ||
1da177e4 LT |
50 | /** |
51 | * atiixp_dma_2_pio - return the PIO mode matching DMA | |
52 | * @xfer_rate: transfer speed | |
53 | * | |
54 | * Returns the nearest equivalent PIO timing for the PIO or DMA | |
55 | * mode requested by the controller. | |
56 | */ | |
57 | ||
58 | static u8 atiixp_dma_2_pio(u8 xfer_rate) { | |
59 | switch(xfer_rate) { | |
60 | case XFER_UDMA_6: | |
61 | case XFER_UDMA_5: | |
62 | case XFER_UDMA_4: | |
63 | case XFER_UDMA_3: | |
64 | case XFER_UDMA_2: | |
65 | case XFER_UDMA_1: | |
66 | case XFER_UDMA_0: | |
67 | case XFER_MW_DMA_2: | |
68 | case XFER_PIO_4: | |
69 | return 4; | |
70 | case XFER_MW_DMA_1: | |
71 | case XFER_PIO_3: | |
72 | return 3; | |
73 | case XFER_SW_DMA_2: | |
74 | case XFER_PIO_2: | |
75 | return 2; | |
76 | case XFER_MW_DMA_0: | |
77 | case XFER_SW_DMA_1: | |
78 | case XFER_SW_DMA_0: | |
79 | case XFER_PIO_1: | |
80 | case XFER_PIO_0: | |
81 | case XFER_PIO_SLOW: | |
82 | default: | |
83 | return 0; | |
84 | } | |
85 | } | |
86 | ||
ccf35289 | 87 | static void atiixp_dma_host_on(ide_drive_t *drive) |
1da177e4 LT |
88 | { |
89 | struct pci_dev *dev = drive->hwif->pci_dev; | |
90 | unsigned long flags; | |
91 | u16 tmp16; | |
92 | ||
6c5f8cc3 | 93 | spin_lock_irqsave(&atiixp_lock, flags); |
1da177e4 LT |
94 | |
95 | pci_read_config_word(dev, ATIIXP_IDE_UDMA_CONTROL, &tmp16); | |
96 | if (save_mdma_mode[drive->dn]) | |
97 | tmp16 &= ~(1 << drive->dn); | |
98 | else | |
99 | tmp16 |= (1 << drive->dn); | |
100 | pci_write_config_word(dev, ATIIXP_IDE_UDMA_CONTROL, tmp16); | |
101 | ||
6c5f8cc3 | 102 | spin_unlock_irqrestore(&atiixp_lock, flags); |
1da177e4 | 103 | |
ccf35289 | 104 | ide_dma_host_on(drive); |
1da177e4 LT |
105 | } |
106 | ||
7469aaf6 | 107 | static void atiixp_dma_host_off(ide_drive_t *drive) |
1da177e4 LT |
108 | { |
109 | struct pci_dev *dev = drive->hwif->pci_dev; | |
110 | unsigned long flags; | |
111 | u16 tmp16; | |
112 | ||
6c5f8cc3 | 113 | spin_lock_irqsave(&atiixp_lock, flags); |
1da177e4 LT |
114 | |
115 | pci_read_config_word(dev, ATIIXP_IDE_UDMA_CONTROL, &tmp16); | |
116 | tmp16 &= ~(1 << drive->dn); | |
117 | pci_write_config_word(dev, ATIIXP_IDE_UDMA_CONTROL, tmp16); | |
118 | ||
6c5f8cc3 | 119 | spin_unlock_irqrestore(&atiixp_lock, flags); |
1da177e4 | 120 | |
7469aaf6 | 121 | ide_dma_host_off(drive); |
1da177e4 LT |
122 | } |
123 | ||
124 | /** | |
485efc6c | 125 | * atiixp_tune_pio - tune a drive attached to a ATIIXP |
1da177e4 LT |
126 | * @drive: drive to tune |
127 | * @pio: desired PIO mode | |
128 | * | |
129 | * Set the interface PIO mode. | |
130 | */ | |
131 | ||
485efc6c | 132 | static void atiixp_tune_pio(ide_drive_t *drive, u8 pio) |
1da177e4 LT |
133 | { |
134 | struct pci_dev *dev = drive->hwif->pci_dev; | |
135 | unsigned long flags; | |
136 | int timing_shift = (drive->dn & 2) ? 16 : 0 + (drive->dn & 1) ? 0 : 8; | |
137 | u32 pio_timing_data; | |
138 | u16 pio_mode_data; | |
139 | ||
6c5f8cc3 | 140 | spin_lock_irqsave(&atiixp_lock, flags); |
1da177e4 LT |
141 | |
142 | pci_read_config_word(dev, ATIIXP_IDE_PIO_MODE, &pio_mode_data); | |
143 | pio_mode_data &= ~(0x07 << (drive->dn * 4)); | |
144 | pio_mode_data |= (pio << (drive->dn * 4)); | |
145 | pci_write_config_word(dev, ATIIXP_IDE_PIO_MODE, pio_mode_data); | |
146 | ||
147 | pci_read_config_dword(dev, ATIIXP_IDE_PIO_TIMING, &pio_timing_data); | |
148 | pio_timing_data &= ~(0xff << timing_shift); | |
149 | pio_timing_data |= (pio_timing[pio].recover_width << timing_shift) | | |
150 | (pio_timing[pio].command_width << (timing_shift + 4)); | |
151 | pci_write_config_dword(dev, ATIIXP_IDE_PIO_TIMING, pio_timing_data); | |
152 | ||
6c5f8cc3 | 153 | spin_unlock_irqrestore(&atiixp_lock, flags); |
1da177e4 LT |
154 | } |
155 | ||
485efc6c BZ |
156 | static void atiixp_tuneproc(ide_drive_t *drive, u8 pio) |
157 | { | |
2134758d | 158 | pio = ide_get_best_pio_mode(drive, pio, 4); |
485efc6c BZ |
159 | atiixp_tune_pio(drive, pio); |
160 | (void)ide_config_drive_speed(drive, XFER_PIO_0 + pio); | |
161 | } | |
162 | ||
1da177e4 LT |
163 | /** |
164 | * atiixp_tune_chipset - tune a ATIIXP interface | |
165 | * @drive: IDE drive to tune | |
166 | * @xferspeed: speed to configure | |
167 | * | |
168 | * Set a ATIIXP interface channel to the desired speeds. This involves | |
169 | * requires the right timing data into the ATIIXP configuration space | |
170 | * then setting the drive parameters appropriately | |
171 | */ | |
172 | ||
173 | static int atiixp_speedproc(ide_drive_t *drive, u8 xferspeed) | |
174 | { | |
175 | struct pci_dev *dev = drive->hwif->pci_dev; | |
176 | unsigned long flags; | |
177 | int timing_shift = (drive->dn & 2) ? 16 : 0 + (drive->dn & 1) ? 0 : 8; | |
178 | u32 tmp32; | |
179 | u16 tmp16; | |
180 | u8 speed, pio; | |
181 | ||
2d5eaa6d | 182 | speed = ide_rate_filter(drive, xferspeed); |
1da177e4 | 183 | |
485efc6c BZ |
184 | if (speed >= XFER_PIO_0 && speed <= XFER_PIO_4) { |
185 | atiixp_tune_pio(drive, speed - XFER_PIO_0); | |
186 | return ide_config_drive_speed(drive, speed); | |
187 | } | |
188 | ||
6c5f8cc3 | 189 | spin_lock_irqsave(&atiixp_lock, flags); |
1da177e4 LT |
190 | |
191 | save_mdma_mode[drive->dn] = 0; | |
192 | if (speed >= XFER_UDMA_0) { | |
193 | pci_read_config_word(dev, ATIIXP_IDE_UDMA_MODE, &tmp16); | |
194 | tmp16 &= ~(0x07 << (drive->dn * 4)); | |
195 | tmp16 |= ((speed & 0x07) << (drive->dn * 4)); | |
196 | pci_write_config_word(dev, ATIIXP_IDE_UDMA_MODE, tmp16); | |
197 | } else { | |
198 | if ((speed >= XFER_MW_DMA_0) && (speed <= XFER_MW_DMA_2)) { | |
199 | save_mdma_mode[drive->dn] = speed; | |
200 | pci_read_config_dword(dev, ATIIXP_IDE_MDMA_TIMING, &tmp32); | |
201 | tmp32 &= ~(0xff << timing_shift); | |
202 | tmp32 |= (mdma_timing[speed & 0x03].recover_width << timing_shift) | | |
203 | (mdma_timing[speed & 0x03].command_width << (timing_shift + 4)); | |
204 | pci_write_config_dword(dev, ATIIXP_IDE_MDMA_TIMING, tmp32); | |
205 | } | |
206 | } | |
207 | ||
6c5f8cc3 | 208 | spin_unlock_irqrestore(&atiixp_lock, flags); |
1da177e4 LT |
209 | |
210 | if (speed >= XFER_SW_DMA_0) | |
211 | pio = atiixp_dma_2_pio(speed); | |
212 | else | |
213 | pio = speed - XFER_PIO_0; | |
214 | ||
485efc6c | 215 | atiixp_tune_pio(drive, pio); |
1da177e4 LT |
216 | |
217 | return ide_config_drive_speed(drive, speed); | |
218 | } | |
219 | ||
1da177e4 LT |
220 | /** |
221 | * atiixp_dma_check - set up an IDE device | |
222 | * @drive: IDE drive to configure | |
223 | * | |
224 | * Set up the ATIIXP interface for the best available speed on this | |
225 | * interface, preferring DMA to PIO. | |
226 | */ | |
227 | ||
228 | static int atiixp_dma_check(ide_drive_t *drive) | |
229 | { | |
1da177e4 LT |
230 | drive->init_speed = 0; |
231 | ||
29e744d0 | 232 | if (ide_tune_dma(drive)) |
3608b5d7 | 233 | return 0; |
1da177e4 | 234 | |
485efc6c BZ |
235 | if (ide_use_fast_pio(drive)) |
236 | atiixp_tuneproc(drive, 255); | |
d8f4469d | 237 | |
3608b5d7 | 238 | return -1; |
1da177e4 LT |
239 | } |
240 | ||
241 | /** | |
242 | * init_hwif_atiixp - fill in the hwif for the ATIIXP | |
243 | * @hwif: IDE interface | |
244 | * | |
245 | * Set up the ide_hwif_t for the ATIIXP interface according to the | |
246 | * capabilities of the hardware. | |
247 | */ | |
248 | ||
249 | static void __devinit init_hwif_atiixp(ide_hwif_t *hwif) | |
250 | { | |
e5c073ff CH |
251 | u8 udma_mode = 0; |
252 | u8 ch = hwif->channel; | |
253 | struct pci_dev *pdev = hwif->pci_dev; | |
254 | ||
1da177e4 | 255 | if (!hwif->irq) |
e5c073ff | 256 | hwif->irq = ch ? 15 : 14; |
1da177e4 LT |
257 | |
258 | hwif->autodma = 0; | |
259 | hwif->tuneproc = &atiixp_tuneproc; | |
260 | hwif->speedproc = &atiixp_speedproc; | |
261 | hwif->drives[0].autotune = 1; | |
262 | hwif->drives[1].autotune = 1; | |
263 | ||
264 | if (!hwif->dma_base) | |
265 | return; | |
266 | ||
267 | hwif->atapi_dma = 1; | |
268 | hwif->ultra_mask = 0x3f; | |
269 | hwif->mwdma_mask = 0x06; | |
270 | hwif->swdma_mask = 0x04; | |
271 | ||
e5c073ff | 272 | pci_read_config_byte(pdev, ATIIXP_IDE_UDMA_MODE + ch, &udma_mode); |
49521f97 | 273 | |
e5c073ff | 274 | if ((udma_mode & 0x07) >= 0x04 || (udma_mode & 0x70) >= 0x40) |
49521f97 | 275 | hwif->cbl = ATA_CBL_PATA80; |
e5c073ff | 276 | else |
49521f97 | 277 | hwif->cbl = ATA_CBL_PATA40; |
e5c073ff | 278 | |
ccf35289 | 279 | hwif->dma_host_on = &atiixp_dma_host_on; |
7469aaf6 | 280 | hwif->dma_host_off = &atiixp_dma_host_off; |
1da177e4 LT |
281 | hwif->ide_dma_check = &atiixp_dma_check; |
282 | if (!noautodma) | |
283 | hwif->autodma = 1; | |
284 | ||
285 | hwif->drives[1].autodma = hwif->autodma; | |
286 | hwif->drives[0].autodma = hwif->autodma; | |
287 | } | |
288 | ||
2b33b4dc | 289 | |
1da177e4 LT |
290 | static ide_pci_device_t atiixp_pci_info[] __devinitdata = { |
291 | { /* 0 */ | |
292 | .name = "ATIIXP", | |
293 | .init_hwif = init_hwif_atiixp, | |
1da177e4 LT |
294 | .autodma = AUTODMA, |
295 | .enablebits = {{0x48,0x01,0x00}, {0x48,0x08,0x00}}, | |
296 | .bootable = ON_BOARD, | |
4099d143 | 297 | .pio_mask = ATA_PIO4, |
b25168df CH |
298 | },{ /* 1 */ |
299 | .name = "SB600_PATA", | |
300 | .init_hwif = init_hwif_atiixp, | |
b25168df CH |
301 | .autodma = AUTODMA, |
302 | .enablebits = {{0x48,0x01,0x00}, {0x00,0x00,0x00}}, | |
303 | .bootable = ON_BOARD, | |
a5d8c5c8 | 304 | .host_flags = IDE_HFLAG_SINGLE, |
4099d143 | 305 | .pio_mask = ATA_PIO4, |
b25168df | 306 | }, |
1da177e4 LT |
307 | }; |
308 | ||
309 | /** | |
310 | * atiixp_init_one - called when a ATIIXP is found | |
311 | * @dev: the atiixp device | |
312 | * @id: the matching pci id | |
313 | * | |
314 | * Called when the PCI registration layer (or the IDE initialization) | |
315 | * finds a device matching our IDE device tables. | |
316 | */ | |
317 | ||
318 | static int __devinit atiixp_init_one(struct pci_dev *dev, const struct pci_device_id *id) | |
319 | { | |
320 | return ide_setup_pci_device(dev, &atiixp_pci_info[id->driver_data]); | |
321 | } | |
322 | ||
323 | static struct pci_device_id atiixp_pci_tbl[] = { | |
324 | { PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP200_IDE, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, | |
325 | { PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP300_IDE, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, | |
326 | { PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP400_IDE, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, | |
b25168df | 327 | { PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP600_IDE, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1}, |
7cfa7168 | 328 | { PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP700_IDE, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, |
1da177e4 LT |
329 | { 0, }, |
330 | }; | |
331 | MODULE_DEVICE_TABLE(pci, atiixp_pci_tbl); | |
332 | ||
333 | static struct pci_driver driver = { | |
334 | .name = "ATIIXP_IDE", | |
335 | .id_table = atiixp_pci_tbl, | |
336 | .probe = atiixp_init_one, | |
337 | }; | |
338 | ||
82ab1eec | 339 | static int __init atiixp_ide_init(void) |
1da177e4 LT |
340 | { |
341 | return ide_pci_register_driver(&driver); | |
342 | } | |
343 | ||
344 | module_init(atiixp_ide_init); | |
345 | ||
346 | MODULE_AUTHOR("HUI YU"); | |
347 | MODULE_DESCRIPTION("PCI driver module for ATI IXP IDE"); | |
348 | MODULE_LICENSE("GPL"); |