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Commit | Line | Data |
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1da177e4 | 1 | /* |
1da177e4 | 2 | * Copyright (C) 1998-2002 Andre Hedrick <andre@linux-ide.org> |
669165da | 3 | * Copyright (C) 2006-2007, 2009 MontaVista Software, Inc. |
4fce3164 | 4 | * Copyright (C) 2007 Bartlomiej Zolnierkiewicz |
1da177e4 | 5 | * |
1da177e4 LT |
6 | * Portions Copyright (C) 1999 Promise Technology, Inc. |
7 | * Author: Frank Tiernan (frankt@promise.com) | |
8 | * Released under terms of General Public License | |
9 | */ | |
10 | ||
1da177e4 LT |
11 | #include <linux/types.h> |
12 | #include <linux/module.h> | |
13 | #include <linux/kernel.h> | |
14 | #include <linux/delay.h> | |
1da177e4 | 15 | #include <linux/blkdev.h> |
1da177e4 LT |
16 | #include <linux/pci.h> |
17 | #include <linux/init.h> | |
18 | #include <linux/ide.h> | |
19 | ||
20 | #include <asm/io.h> | |
1da177e4 | 21 | |
ced3ec8a BZ |
22 | #define DRV_NAME "pdc202xx_old" |
23 | ||
1da177e4 LT |
24 | #define PDC202XX_DEBUG_DRIVE_INFO 0 |
25 | ||
4fce3164 | 26 | static void pdc_old_disable_66MHz_clock(ide_hwif_t *); |
1da177e4 | 27 | |
88b2b32b | 28 | static void pdc202xx_set_mode(ide_drive_t *drive, const u8 speed) |
1da177e4 | 29 | { |
898ec223 | 30 | ide_hwif_t *hwif = drive->hwif; |
36501650 | 31 | struct pci_dev *dev = to_pci_dev(hwif->dev); |
1da177e4 | 32 | u8 drive_pci = 0x60 + (drive->dn << 2); |
1da177e4 | 33 | |
4fce3164 | 34 | u8 AP = 0, BP = 0, CP = 0; |
1da177e4 LT |
35 | u8 TA = 0, TB = 0, TC = 0; |
36 | ||
4fce3164 BZ |
37 | #if PDC202XX_DEBUG_DRIVE_INFO |
38 | u32 drive_conf = 0; | |
1da177e4 | 39 | pci_read_config_dword(dev, drive_pci, &drive_conf); |
4fce3164 | 40 | #endif |
1da177e4 | 41 | |
4fce3164 BZ |
42 | /* |
43 | * TODO: do this once per channel | |
44 | */ | |
45 | if (dev->device != PCI_DEVICE_ID_PROMISE_20246) | |
46 | pdc_old_disable_66MHz_clock(hwif); | |
1da177e4 | 47 | |
4fce3164 BZ |
48 | pci_read_config_byte(dev, drive_pci, &AP); |
49 | pci_read_config_byte(dev, drive_pci + 1, &BP); | |
50 | pci_read_config_byte(dev, drive_pci + 2, &CP); | |
1da177e4 LT |
51 | |
52 | switch(speed) { | |
1da177e4 LT |
53 | case XFER_UDMA_5: |
54 | case XFER_UDMA_4: TB = 0x20; TC = 0x01; break; | |
55 | case XFER_UDMA_2: TB = 0x20; TC = 0x01; break; | |
56 | case XFER_UDMA_3: | |
57 | case XFER_UDMA_1: TB = 0x40; TC = 0x02; break; | |
58 | case XFER_UDMA_0: | |
59 | case XFER_MW_DMA_2: TB = 0x60; TC = 0x03; break; | |
60 | case XFER_MW_DMA_1: TB = 0x60; TC = 0x04; break; | |
4fce3164 | 61 | case XFER_MW_DMA_0: TB = 0xE0; TC = 0x0F; break; |
1da177e4 LT |
62 | case XFER_PIO_4: TA = 0x01; TB = 0x04; break; |
63 | case XFER_PIO_3: TA = 0x02; TB = 0x06; break; | |
64 | case XFER_PIO_2: TA = 0x03; TB = 0x08; break; | |
65 | case XFER_PIO_1: TA = 0x05; TB = 0x0C; break; | |
66 | case XFER_PIO_0: | |
67 | default: TA = 0x09; TB = 0x13; break; | |
68 | } | |
69 | ||
70 | if (speed < XFER_SW_DMA_0) { | |
4fce3164 BZ |
71 | /* |
72 | * preserve SYNC_INT / ERDDY_EN bits while clearing | |
73 | * Prefetch_EN / IORDY_EN / PA[3:0] bits of register A | |
74 | */ | |
75 | AP &= ~0x3f; | |
c9ef59ff | 76 | if (ide_pio_need_iordy(drive, speed - XFER_PIO_0)) |
4fce3164 BZ |
77 | AP |= 0x20; /* set IORDY_EN bit */ |
78 | if (drive->media == ide_disk) | |
79 | AP |= 0x10; /* set Prefetch_EN bit */ | |
80 | /* clear PB[4:0] bits of register B */ | |
81 | BP &= ~0x1f; | |
82 | pci_write_config_byte(dev, drive_pci, AP | TA); | |
83 | pci_write_config_byte(dev, drive_pci + 1, BP | TB); | |
1da177e4 | 84 | } else { |
4fce3164 BZ |
85 | /* clear MB[2:0] bits of register B */ |
86 | BP &= ~0xe0; | |
87 | /* clear MC[3:0] bits of register C */ | |
88 | CP &= ~0x0f; | |
89 | pci_write_config_byte(dev, drive_pci + 1, BP | TB); | |
90 | pci_write_config_byte(dev, drive_pci + 2, CP | TC); | |
1da177e4 LT |
91 | } |
92 | ||
93 | #if PDC202XX_DEBUG_DRIVE_INFO | |
94 | printk(KERN_DEBUG "%s: %s drive%d 0x%08x ", | |
95 | drive->name, ide_xfer_verbose(speed), | |
96 | drive->dn, drive_conf); | |
4fce3164 | 97 | pci_read_config_dword(dev, drive_pci, &drive_conf); |
1da177e4 | 98 | printk("0x%08x\n", drive_conf); |
4fce3164 | 99 | #endif |
1da177e4 LT |
100 | } |
101 | ||
26bcb879 | 102 | static void pdc202xx_set_pio_mode(ide_drive_t *drive, const u8 pio) |
1da177e4 | 103 | { |
88b2b32b | 104 | pdc202xx_set_mode(drive, XFER_PIO_0 + pio); |
1da177e4 LT |
105 | } |
106 | ||
f454cbe8 | 107 | static u8 pdc2026x_cable_detect(ide_hwif_t *hwif) |
1da177e4 | 108 | { |
36501650 | 109 | struct pci_dev *dev = to_pci_dev(hwif->dev); |
1bee4d1d | 110 | u16 CIS, mask = hwif->channel ? (1 << 11) : (1 << 10); |
49521f97 | 111 | |
36501650 | 112 | pci_read_config_word(dev, 0x50, &CIS); |
49521f97 BZ |
113 | |
114 | return (CIS & mask) ? ATA_CBL_PATA40 : ATA_CBL_PATA80; | |
1da177e4 LT |
115 | } |
116 | ||
117 | /* | |
118 | * Set the control register to use the 66MHz system | |
119 | * clock for UDMA 3/4/5 mode operation when necessary. | |
120 | * | |
4fce3164 BZ |
121 | * FIXME: this register is shared by both channels, some locking is needed |
122 | * | |
1da177e4 LT |
123 | * It may also be possible to leave the 66MHz clock on |
124 | * and readjust the timing parameters. | |
125 | */ | |
126 | static void pdc_old_enable_66MHz_clock(ide_hwif_t *hwif) | |
127 | { | |
1c029fd6 | 128 | unsigned long clock_reg = hwif->extra_base + 0x01; |
0ecdca26 | 129 | u8 clock = inb(clock_reg); |
1da177e4 | 130 | |
0ecdca26 | 131 | outb(clock | (hwif->channel ? 0x08 : 0x02), clock_reg); |
1da177e4 LT |
132 | } |
133 | ||
134 | static void pdc_old_disable_66MHz_clock(ide_hwif_t *hwif) | |
135 | { | |
1c029fd6 | 136 | unsigned long clock_reg = hwif->extra_base + 0x01; |
0ecdca26 | 137 | u8 clock = inb(clock_reg); |
1da177e4 | 138 | |
0ecdca26 | 139 | outb(clock & ~(hwif->channel ? 0x08 : 0x02), clock_reg); |
1da177e4 LT |
140 | } |
141 | ||
5e37bdc0 | 142 | static void pdc202xx_dma_start(ide_drive_t *drive) |
1da177e4 LT |
143 | { |
144 | if (drive->current_speed > XFER_UDMA_2) | |
145 | pdc_old_enable_66MHz_clock(drive->hwif); | |
97100fc8 | 146 | if (drive->media != ide_disk || (drive->dev_flags & IDE_DFLAG_LBA48)) { |
898ec223 | 147 | ide_hwif_t *hwif = drive->hwif; |
b65fac32 | 148 | struct request *rq = hwif->rq; |
1c029fd6 | 149 | unsigned long high_16 = hwif->extra_base - 16; |
1da177e4 LT |
150 | unsigned long atapi_reg = high_16 + (hwif->channel ? 0x24 : 0x20); |
151 | u32 word_count = 0; | |
0ecdca26 | 152 | u8 clock = inb(high_16 + 0x11); |
1da177e4 | 153 | |
0ecdca26 | 154 | outb(clock | (hwif->channel ? 0x08 : 0x02), high_16 + 0x11); |
9780e2dd | 155 | word_count = (blk_rq_sectors(rq) << 8); |
1da177e4 LT |
156 | word_count = (rq_data_dir(rq) == READ) ? |
157 | word_count | 0x05000000 : | |
158 | word_count | 0x06000000; | |
0ecdca26 | 159 | outl(word_count, atapi_reg); |
1da177e4 LT |
160 | } |
161 | ide_dma_start(drive); | |
162 | } | |
163 | ||
5e37bdc0 | 164 | static int pdc202xx_dma_end(ide_drive_t *drive) |
1da177e4 | 165 | { |
97100fc8 | 166 | if (drive->media != ide_disk || (drive->dev_flags & IDE_DFLAG_LBA48)) { |
898ec223 | 167 | ide_hwif_t *hwif = drive->hwif; |
1c029fd6 | 168 | unsigned long high_16 = hwif->extra_base - 16; |
1da177e4 LT |
169 | unsigned long atapi_reg = high_16 + (hwif->channel ? 0x24 : 0x20); |
170 | u8 clock = 0; | |
171 | ||
0ecdca26 BZ |
172 | outl(0, atapi_reg); /* zero out extra */ |
173 | clock = inb(high_16 + 0x11); | |
174 | outb(clock & ~(hwif->channel ? 0x08:0x02), high_16 + 0x11); | |
1da177e4 LT |
175 | } |
176 | if (drive->current_speed > XFER_UDMA_2) | |
177 | pdc_old_disable_66MHz_clock(drive->hwif); | |
653bcf52 | 178 | return ide_dma_end(drive); |
1da177e4 LT |
179 | } |
180 | ||
2ed0ef54 | 181 | static int init_chipset_pdc202xx(struct pci_dev *dev) |
1da177e4 | 182 | { |
73369d2a | 183 | unsigned long dmabase = pci_resource_start(dev, 4); |
1da177e4 LT |
184 | u8 udma_speed_flag = 0, primary_mode = 0, secondary_mode = 0; |
185 | ||
73369d2a BZ |
186 | if (dmabase == 0) |
187 | goto out; | |
1da177e4 | 188 | |
0ecdca26 BZ |
189 | udma_speed_flag = inb(dmabase | 0x1f); |
190 | primary_mode = inb(dmabase | 0x1a); | |
191 | secondary_mode = inb(dmabase | 0x1b); | |
1da177e4 LT |
192 | printk(KERN_INFO "%s: (U)DMA Burst Bit %sABLED " \ |
193 | "Primary %s Mode " \ | |
5e59c236 | 194 | "Secondary %s Mode.\n", pci_name(dev), |
1da177e4 LT |
195 | (udma_speed_flag & 1) ? "EN" : "DIS", |
196 | (primary_mode & 1) ? "MASTER" : "PCI", | |
197 | (secondary_mode & 1) ? "MASTER" : "PCI" ); | |
198 | ||
1da177e4 LT |
199 | if (!(udma_speed_flag & 1)) { |
200 | printk(KERN_INFO "%s: FORCING BURST BIT 0x%02x->0x%02x ", | |
5e59c236 | 201 | pci_name(dev), udma_speed_flag, |
1da177e4 | 202 | (udma_speed_flag|1)); |
0ecdca26 BZ |
203 | outb(udma_speed_flag | 1, dmabase | 0x1f); |
204 | printk("%sACTIVE\n", (inb(dmabase | 0x1f) & 1) ? "" : "IN"); | |
1da177e4 | 205 | } |
73369d2a | 206 | out: |
2ed0ef54 | 207 | return 0; |
1da177e4 LT |
208 | } |
209 | ||
97f84baa BZ |
210 | static void __devinit pdc202ata4_fixup_irq(struct pci_dev *dev, |
211 | const char *name) | |
1da177e4 LT |
212 | { |
213 | if ((dev->class >> 8) != PCI_CLASS_STORAGE_IDE) { | |
214 | u8 irq = 0, irq2 = 0; | |
215 | pci_read_config_byte(dev, PCI_INTERRUPT_LINE, &irq); | |
216 | /* 0xbc */ | |
217 | pci_read_config_byte(dev, (PCI_INTERRUPT_LINE)|0x80, &irq2); | |
218 | if (irq != irq2) { | |
219 | pci_write_config_byte(dev, | |
220 | (PCI_INTERRUPT_LINE)|0x80, irq); /* 0xbc */ | |
28cfd8af BZ |
221 | printk(KERN_INFO "%s %s: PCI config space interrupt " |
222 | "mirror fixed\n", name, pci_name(dev)); | |
1da177e4 LT |
223 | } |
224 | } | |
1da177e4 LT |
225 | } |
226 | ||
4db90a14 BZ |
227 | #define IDE_HFLAGS_PDC202XX \ |
228 | (IDE_HFLAG_ERROR_STOPS_FIFO | \ | |
4db90a14 BZ |
229 | IDE_HFLAG_OFF_BOARD) |
230 | ||
ac95beed BZ |
231 | static const struct ide_port_ops pdc20246_port_ops = { |
232 | .set_pio_mode = pdc202xx_set_pio_mode, | |
233 | .set_dma_mode = pdc202xx_set_mode, | |
ac95beed BZ |
234 | }; |
235 | ||
236 | static const struct ide_port_ops pdc2026x_port_ops = { | |
237 | .set_pio_mode = pdc202xx_set_pio_mode, | |
238 | .set_dma_mode = pdc202xx_set_mode, | |
ac95beed BZ |
239 | .cable_detect = pdc2026x_cable_detect, |
240 | }; | |
241 | ||
f37afdac BZ |
242 | static const struct ide_dma_ops pdc2026x_dma_ops = { |
243 | .dma_host_set = ide_dma_host_set, | |
244 | .dma_setup = ide_dma_setup, | |
5e37bdc0 BZ |
245 | .dma_start = pdc202xx_dma_start, |
246 | .dma_end = pdc202xx_dma_end, | |
72b9304f | 247 | .dma_test_irq = ide_dma_test_irq, |
1221e241 | 248 | .dma_lost_irq = ide_dma_lost_irq, |
22117d6e | 249 | .dma_timer_expiry = ide_dma_sff_timer_expiry, |
592b5315 | 250 | .dma_sff_read_status = ide_dma_sff_read_status, |
5e37bdc0 BZ |
251 | }; |
252 | ||
6b492496 | 253 | #define DECLARE_PDC2026X_DEV(udma, sectors) \ |
5ef8cb5d | 254 | { \ |
ced3ec8a | 255 | .name = DRV_NAME, \ |
5ef8cb5d | 256 | .init_chipset = init_chipset_pdc202xx, \ |
ac95beed | 257 | .port_ops = &pdc2026x_port_ops, \ |
5e37bdc0 | 258 | .dma_ops = &pdc2026x_dma_ops, \ |
6b492496 | 259 | .host_flags = IDE_HFLAGS_PDC202XX, \ |
5ef8cb5d BZ |
260 | .pio_mask = ATA_PIO4, \ |
261 | .mwdma_mask = ATA_MWDMA2, \ | |
262 | .udma_mask = udma, \ | |
6b492496 | 263 | .max_sectors = sectors, \ |
5ef8cb5d BZ |
264 | } |
265 | ||
85620436 | 266 | static const struct ide_port_info pdc202xx_chipsets[] __devinitdata = { |
ced3ec8a BZ |
267 | { /* 0: PDC20246 */ |
268 | .name = DRV_NAME, | |
1da177e4 | 269 | .init_chipset = init_chipset_pdc202xx, |
ac95beed | 270 | .port_ops = &pdc20246_port_ops, |
72b9304f | 271 | .dma_ops = &sff_dma_ops, |
4db90a14 | 272 | .host_flags = IDE_HFLAGS_PDC202XX, |
4099d143 | 273 | .pio_mask = ATA_PIO4, |
5f8b6c34 BZ |
274 | .mwdma_mask = ATA_MWDMA2, |
275 | .udma_mask = ATA_UDMA2, | |
5ef8cb5d BZ |
276 | }, |
277 | ||
ced3ec8a BZ |
278 | /* 1: PDC2026{2,3} */ |
279 | DECLARE_PDC2026X_DEV(ATA_UDMA4, 0), | |
6b492496 BZ |
280 | /* 2: PDC2026{5,7}: UDMA5, limit LBA48 requests to 256 sectors */ |
281 | DECLARE_PDC2026X_DEV(ATA_UDMA5, 256), | |
1da177e4 LT |
282 | }; |
283 | ||
284 | /** | |
285 | * pdc202xx_init_one - called when a PDC202xx is found | |
286 | * @dev: the pdc202xx device | |
287 | * @id: the matching pci id | |
288 | * | |
289 | * Called when the PCI registration layer (or the IDE initialization) | |
290 | * finds a device matching our IDE device tables. | |
291 | */ | |
292 | ||
293 | static int __devinit pdc202xx_init_one(struct pci_dev *dev, const struct pci_device_id *id) | |
294 | { | |
85620436 | 295 | const struct ide_port_info *d; |
97f84baa BZ |
296 | u8 idx = id->driver_data; |
297 | ||
298 | d = &pdc202xx_chipsets[idx]; | |
299 | ||
ced3ec8a | 300 | if (idx < 2) |
97f84baa BZ |
301 | pdc202ata4_fixup_irq(dev, d->name); |
302 | ||
ced3ec8a | 303 | if (dev->vendor == PCI_DEVICE_ID_PROMISE_20265) { |
97f84baa | 304 | struct pci_dev *bridge = dev->bus->self; |
1da177e4 | 305 | |
97f84baa BZ |
306 | if (bridge && |
307 | bridge->vendor == PCI_VENDOR_ID_INTEL && | |
308 | (bridge->device == PCI_DEVICE_ID_INTEL_I960 || | |
309 | bridge->device == PCI_DEVICE_ID_INTEL_I960RM)) { | |
ced3ec8a | 310 | printk(KERN_INFO DRV_NAME " %s: skipping Promise " |
28cfd8af BZ |
311 | "PDC20265 attached to I2O RAID controller\n", |
312 | pci_name(dev)); | |
97f84baa BZ |
313 | return -ENODEV; |
314 | } | |
315 | } | |
316 | ||
6cdf6eb3 | 317 | return ide_pci_init_one(dev, d, NULL); |
1da177e4 LT |
318 | } |
319 | ||
9cbcc5e3 BZ |
320 | static const struct pci_device_id pdc202xx_pci_tbl[] = { |
321 | { PCI_VDEVICE(PROMISE, PCI_DEVICE_ID_PROMISE_20246), 0 }, | |
322 | { PCI_VDEVICE(PROMISE, PCI_DEVICE_ID_PROMISE_20262), 1 }, | |
ced3ec8a BZ |
323 | { PCI_VDEVICE(PROMISE, PCI_DEVICE_ID_PROMISE_20263), 1 }, |
324 | { PCI_VDEVICE(PROMISE, PCI_DEVICE_ID_PROMISE_20265), 2 }, | |
325 | { PCI_VDEVICE(PROMISE, PCI_DEVICE_ID_PROMISE_20267), 2 }, | |
1da177e4 LT |
326 | { 0, }, |
327 | }; | |
328 | MODULE_DEVICE_TABLE(pci, pdc202xx_pci_tbl); | |
329 | ||
a9ab09e2 | 330 | static struct pci_driver pdc202xx_pci_driver = { |
1da177e4 LT |
331 | .name = "Promise_Old_IDE", |
332 | .id_table = pdc202xx_pci_tbl, | |
333 | .probe = pdc202xx_init_one, | |
574a1c24 | 334 | .remove = ide_pci_remove, |
feb22b7f BZ |
335 | .suspend = ide_pci_suspend, |
336 | .resume = ide_pci_resume, | |
1da177e4 LT |
337 | }; |
338 | ||
82ab1eec | 339 | static int __init pdc202xx_ide_init(void) |
1da177e4 | 340 | { |
a9ab09e2 | 341 | return ide_pci_register_driver(&pdc202xx_pci_driver); |
1da177e4 LT |
342 | } |
343 | ||
574a1c24 BZ |
344 | static void __exit pdc202xx_ide_exit(void) |
345 | { | |
a9ab09e2 | 346 | pci_unregister_driver(&pdc202xx_pci_driver); |
574a1c24 BZ |
347 | } |
348 | ||
1da177e4 | 349 | module_init(pdc202xx_ide_init); |
574a1c24 | 350 | module_exit(pdc202xx_ide_exit); |
1da177e4 LT |
351 | |
352 | MODULE_AUTHOR("Andre Hedrick, Frank Tiernan"); | |
353 | MODULE_DESCRIPTION("PCI driver module for older Promise IDE"); | |
354 | MODULE_LICENSE("GPL"); |