Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
1da177e4 LT |
2 | * Copyright (C) 1997-1998 Mark Lord <mlord@pobox.com> |
3 | * Copyright (C) 1998 Eddie C. Dost <ecd@skynet.be> | |
4 | * Copyright (C) 1999-2000 Andre Hedrick <andre@linux-ide.org> | |
5 | * Copyright (C) 2004 Grant Grundler <grundler at parisc-linux.org> | |
6 | * | |
7 | * Inspired by an earlier effort from David S. Miller <davem@redhat.com> | |
8 | */ | |
9 | ||
1da177e4 LT |
10 | #include <linux/module.h> |
11 | #include <linux/types.h> | |
12 | #include <linux/kernel.h> | |
1da177e4 | 13 | #include <linux/interrupt.h> |
1da177e4 LT |
14 | #include <linux/hdreg.h> |
15 | #include <linux/pci.h> | |
16 | #include <linux/delay.h> | |
17 | #include <linux/ide.h> | |
18 | #include <linux/init.h> | |
19 | ||
20 | #include <asm/io.h> | |
21 | ||
ced3ec8a BZ |
22 | #define DRV_NAME "ns87415" |
23 | ||
1da177e4 LT |
24 | #ifdef CONFIG_SUPERIO |
25 | /* SUPERIO 87560 is a PoS chip that NatSem denies exists. | |
26 | * Unfortunately, it's built-in on all Astro-based PA-RISC workstations | |
27 | * which use the integrated NS87514 cell for CD-ROM support. | |
28 | * i.e we have to support for CD-ROM installs. | |
29 | * See drivers/parisc/superio.c for more gory details. | |
30 | */ | |
31 | #include <asm/superio.h> | |
32 | ||
1da177e4 LT |
33 | #define SUPERIO_IDE_MAX_RETRIES 25 |
34 | ||
35 | /* Because of a defect in Super I/O, all reads of the PCI DMA status | |
36 | * registers, IDE status register and the IDE select register need to be | |
37 | * retried | |
38 | */ | |
39 | static u8 superio_ide_inb (unsigned long port) | |
40 | { | |
761052e6 BZ |
41 | u8 tmp; |
42 | int retries = SUPERIO_IDE_MAX_RETRIES; | |
43 | ||
44 | /* printk(" [ reading port 0x%x with retry ] ", port); */ | |
1da177e4 | 45 | |
761052e6 BZ |
46 | do { |
47 | tmp = inb(port); | |
48 | if (tmp == 0) | |
49 | udelay(50); | |
50 | } while (tmp == 0 && retries-- > 0); | |
51 | ||
52 | return tmp; | |
1da177e4 LT |
53 | } |
54 | ||
b73c7ee2 BZ |
55 | static u8 superio_read_status(ide_hwif_t *hwif) |
56 | { | |
57 | return superio_ide_inb(hwif->io_ports.status_addr); | |
58 | } | |
59 | ||
b2f951aa BZ |
60 | static u8 superio_read_sff_dma_status(ide_hwif_t *hwif) |
61 | { | |
cab7f8ed | 62 | return superio_ide_inb(hwif->dma_base + ATA_DMA_STATUS); |
b2f951aa BZ |
63 | } |
64 | ||
ea23b8ba BZ |
65 | static void superio_tf_read(ide_drive_t *drive, ide_task_t *task) |
66 | { | |
67 | struct ide_io_ports *io_ports = &drive->hwif->io_ports; | |
68 | struct ide_taskfile *tf = &task->tf; | |
69 | ||
70 | if (task->tf_flags & IDE_TFLAG_IN_DATA) { | |
71 | u16 data = inw(io_ports->data_addr); | |
72 | ||
73 | tf->data = data & 0xff; | |
74 | tf->hob_data = (data >> 8) & 0xff; | |
75 | } | |
76 | ||
77 | /* be sure we're looking at the low order bits */ | |
ff074883 | 78 | outb(ATA_DEVCTL_OBS & ~0x80, io_ports->ctl_addr); |
ea23b8ba | 79 | |
92eb4380 BZ |
80 | if (task->tf_flags & IDE_TFLAG_IN_FEATURE) |
81 | tf->feature = inb(io_ports->feature_addr); | |
ea23b8ba BZ |
82 | if (task->tf_flags & IDE_TFLAG_IN_NSECT) |
83 | tf->nsect = inb(io_ports->nsect_addr); | |
84 | if (task->tf_flags & IDE_TFLAG_IN_LBAL) | |
85 | tf->lbal = inb(io_ports->lbal_addr); | |
86 | if (task->tf_flags & IDE_TFLAG_IN_LBAM) | |
87 | tf->lbam = inb(io_ports->lbam_addr); | |
88 | if (task->tf_flags & IDE_TFLAG_IN_LBAH) | |
89 | tf->lbah = inb(io_ports->lbah_addr); | |
90 | if (task->tf_flags & IDE_TFLAG_IN_DEVICE) | |
91 | tf->device = superio_ide_inb(io_ports->device_addr); | |
92 | ||
93 | if (task->tf_flags & IDE_TFLAG_LBA48) { | |
ff074883 | 94 | outb(ATA_DEVCTL_OBS | 0x80, io_ports->ctl_addr); |
ea23b8ba BZ |
95 | |
96 | if (task->tf_flags & IDE_TFLAG_IN_HOB_FEATURE) | |
97 | tf->hob_feature = inb(io_ports->feature_addr); | |
98 | if (task->tf_flags & IDE_TFLAG_IN_HOB_NSECT) | |
99 | tf->hob_nsect = inb(io_ports->nsect_addr); | |
100 | if (task->tf_flags & IDE_TFLAG_IN_HOB_LBAL) | |
101 | tf->hob_lbal = inb(io_ports->lbal_addr); | |
102 | if (task->tf_flags & IDE_TFLAG_IN_HOB_LBAM) | |
103 | tf->hob_lbam = inb(io_ports->lbam_addr); | |
104 | if (task->tf_flags & IDE_TFLAG_IN_HOB_LBAH) | |
105 | tf->hob_lbah = inb(io_ports->lbah_addr); | |
106 | } | |
107 | } | |
108 | ||
374e042c BZ |
109 | static const struct ide_tp_ops superio_tp_ops = { |
110 | .exec_command = ide_exec_command, | |
111 | .read_status = superio_read_status, | |
112 | .read_altstatus = ide_read_altstatus, | |
113 | .read_sff_dma_status = superio_read_sff_dma_status, | |
114 | ||
115 | .set_irq = ide_set_irq, | |
116 | ||
117 | .tf_load = ide_tf_load, | |
118 | .tf_read = superio_tf_read, | |
119 | ||
120 | .input_data = ide_input_data, | |
121 | .output_data = ide_output_data, | |
122 | }; | |
123 | ||
124 | static void __devinit superio_init_iops(struct hwif_s *hwif) | |
1da177e4 | 125 | { |
36501650 | 126 | struct pci_dev *pdev = to_pci_dev(hwif->dev); |
761052e6 | 127 | u32 dma_stat; |
36501650 | 128 | u8 port = hwif->channel, tmp; |
1da177e4 | 129 | |
761052e6 | 130 | dma_stat = (pci_resource_start(pdev, 4) & ~3) + (!port ? 2 : 0xa); |
1da177e4 LT |
131 | |
132 | /* Clear error/interrupt, enable dma */ | |
761052e6 BZ |
133 | tmp = superio_ide_inb(dma_stat); |
134 | outb(tmp | 0x66, dma_stat); | |
1da177e4 LT |
135 | } |
136 | #endif | |
137 | ||
138 | static unsigned int ns87415_count = 0, ns87415_control[MAX_HWIFS] = { 0 }; | |
139 | ||
140 | /* | |
141 | * This routine either enables/disables (according to drive->present) | |
142 | * the IRQ associated with the port (HWIF(drive)), | |
143 | * and selects either PIO or DMA handshaking for the next I/O operation. | |
144 | */ | |
145 | static void ns87415_prepare_drive (ide_drive_t *drive, unsigned int use_dma) | |
146 | { | |
147 | ide_hwif_t *hwif = HWIF(drive); | |
36501650 | 148 | struct pci_dev *dev = to_pci_dev(hwif->dev); |
1da177e4 | 149 | unsigned int bit, other, new, *old = (unsigned int *) hwif->select_data; |
1da177e4 LT |
150 | unsigned long flags; |
151 | ||
152 | local_irq_save(flags); | |
153 | new = *old; | |
154 | ||
155 | /* Adjust IRQ enable bit */ | |
156 | bit = 1 << (8 + hwif->channel); | |
157 | new = drive->present ? (new & ~bit) : (new | bit); | |
158 | ||
159 | /* Select PIO or DMA, DMA may only be selected for one drive/channel. */ | |
160 | bit = 1 << (20 + drive->select.b.unit + (hwif->channel << 1)); | |
161 | other = 1 << (20 + (1 - drive->select.b.unit) + (hwif->channel << 1)); | |
162 | new = use_dma ? ((new & ~other) | bit) : (new & ~bit); | |
163 | ||
164 | if (new != *old) { | |
165 | unsigned char stat; | |
166 | ||
167 | /* | |
168 | * Don't change DMA engine settings while Write Buffers | |
169 | * are busy. | |
170 | */ | |
171 | (void) pci_read_config_byte(dev, 0x43, &stat); | |
172 | while (stat & 0x03) { | |
173 | udelay(1); | |
174 | (void) pci_read_config_byte(dev, 0x43, &stat); | |
175 | } | |
176 | ||
177 | *old = new; | |
178 | (void) pci_write_config_dword(dev, 0x40, new); | |
179 | ||
180 | /* | |
181 | * And let things settle... | |
182 | */ | |
183 | udelay(10); | |
184 | } | |
185 | ||
186 | local_irq_restore(flags); | |
187 | } | |
188 | ||
189 | static void ns87415_selectproc (ide_drive_t *drive) | |
190 | { | |
191 | ns87415_prepare_drive (drive, drive->using_dma); | |
192 | } | |
193 | ||
5e37bdc0 | 194 | static int ns87415_dma_end(ide_drive_t *drive) |
1da177e4 LT |
195 | { |
196 | ide_hwif_t *hwif = HWIF(drive); | |
197 | u8 dma_stat = 0, dma_cmd = 0; | |
198 | ||
199 | drive->waiting_for_dma = 0; | |
374e042c | 200 | dma_stat = hwif->tp_ops->read_sff_dma_status(hwif); |
cab7f8ed BZ |
201 | /* get DMA command mode */ |
202 | dma_cmd = inb(hwif->dma_base + ATA_DMA_CMD); | |
1da177e4 | 203 | /* stop DMA */ |
cab7f8ed | 204 | outb(dma_cmd & ~1, hwif->dma_base + ATA_DMA_CMD); |
1da177e4 | 205 | /* from ERRATA: clear the INTR & ERROR bits */ |
cab7f8ed BZ |
206 | dma_cmd = inb(hwif->dma_base + ATA_DMA_CMD); |
207 | outb(dma_cmd | 6, hwif->dma_base + ATA_DMA_CMD); | |
1da177e4 LT |
208 | /* and free any DMA resources */ |
209 | ide_destroy_dmatable(drive); | |
210 | /* verify good DMA status */ | |
211 | return (dma_stat & 7) != 4; | |
212 | } | |
213 | ||
5e37bdc0 | 214 | static int ns87415_dma_setup(ide_drive_t *drive) |
1da177e4 LT |
215 | { |
216 | /* select DMA xfer */ | |
217 | ns87415_prepare_drive(drive, 1); | |
218 | if (!ide_dma_setup(drive)) | |
219 | return 0; | |
220 | /* DMA failed: select PIO xfer */ | |
221 | ns87415_prepare_drive(drive, 0); | |
222 | return 1; | |
223 | } | |
224 | ||
c20530ed | 225 | static void __devinit init_hwif_ns87415 (ide_hwif_t *hwif) |
1da177e4 | 226 | { |
36501650 | 227 | struct pci_dev *dev = to_pci_dev(hwif->dev); |
1da177e4 LT |
228 | unsigned int ctrl, using_inta; |
229 | u8 progif; | |
230 | #ifdef __sparc_v9__ | |
231 | int timeout; | |
232 | u8 stat; | |
233 | #endif | |
234 | ||
1da177e4 LT |
235 | /* |
236 | * We cannot probe for IRQ: both ports share common IRQ on INTA. | |
237 | * Also, leave IRQ masked during drive probing, to prevent infinite | |
238 | * interrupts from a potentially floating INTA.. | |
239 | * | |
240 | * IRQs get unmasked in selectproc when drive is first used. | |
241 | */ | |
242 | (void) pci_read_config_dword(dev, 0x40, &ctrl); | |
243 | (void) pci_read_config_byte(dev, 0x09, &progif); | |
244 | /* is irq in "native" mode? */ | |
245 | using_inta = progif & (1 << (hwif->channel << 1)); | |
246 | if (!using_inta) | |
247 | using_inta = ctrl & (1 << (4 + hwif->channel)); | |
248 | if (hwif->mate) { | |
249 | hwif->select_data = hwif->mate->select_data; | |
250 | } else { | |
251 | hwif->select_data = (unsigned long) | |
252 | &ns87415_control[ns87415_count++]; | |
253 | ctrl |= (1 << 8) | (1 << 9); /* mask both IRQs */ | |
254 | if (using_inta) | |
255 | ctrl &= ~(1 << 6); /* unmask INTA */ | |
256 | *((unsigned int *)hwif->select_data) = ctrl; | |
257 | (void) pci_write_config_dword(dev, 0x40, ctrl); | |
258 | ||
259 | /* | |
260 | * Set prefetch size to 512 bytes for both ports, | |
261 | * but don't turn on/off prefetching here. | |
262 | */ | |
263 | pci_write_config_byte(dev, 0x55, 0xee); | |
264 | ||
265 | #ifdef __sparc_v9__ | |
266 | /* | |
9d501529 BZ |
267 | * XXX: Reset the device, if we don't it will not respond to |
268 | * SELECT_DRIVE() properly during first ide_probe_port(). | |
1da177e4 LT |
269 | */ |
270 | timeout = 10000; | |
4c3032d8 | 271 | outb(12, hwif->io_ports.ctl_addr); |
1da177e4 | 272 | udelay(10); |
4c3032d8 | 273 | outb(8, hwif->io_ports.ctl_addr); |
1da177e4 LT |
274 | do { |
275 | udelay(50); | |
374e042c | 276 | stat = hwif->tp_ops->read_status(hwif); |
3a7d2484 BZ |
277 | if (stat == 0xff) |
278 | break; | |
279 | } while ((stat & ATA_BUSY) && --timeout); | |
1da177e4 LT |
280 | #endif |
281 | } | |
282 | ||
283 | if (!using_inta) | |
a861beb1 | 284 | hwif->irq = __ide_default_irq(hwif->io_ports.data_addr); |
1da177e4 LT |
285 | else if (!hwif->irq && hwif->mate && hwif->mate->irq) |
286 | hwif->irq = hwif->mate->irq; /* share IRQ with mate */ | |
287 | ||
288 | if (!hwif->dma_base) | |
289 | return; | |
290 | ||
cab7f8ed | 291 | outb(0x60, hwif->dma_base + ATA_DMA_STATUS); |
1da177e4 LT |
292 | } |
293 | ||
ac95beed BZ |
294 | static const struct ide_port_ops ns87415_port_ops = { |
295 | .selectproc = ns87415_selectproc, | |
296 | }; | |
297 | ||
f37afdac BZ |
298 | static const struct ide_dma_ops ns87415_dma_ops = { |
299 | .dma_host_set = ide_dma_host_set, | |
5e37bdc0 | 300 | .dma_setup = ns87415_dma_setup, |
f37afdac BZ |
301 | .dma_exec_cmd = ide_dma_exec_cmd, |
302 | .dma_start = ide_dma_start, | |
5e37bdc0 | 303 | .dma_end = ns87415_dma_end, |
f37afdac BZ |
304 | .dma_test_irq = ide_dma_test_irq, |
305 | .dma_lost_irq = ide_dma_lost_irq, | |
306 | .dma_timeout = ide_dma_timeout, | |
5e37bdc0 BZ |
307 | }; |
308 | ||
85620436 | 309 | static const struct ide_port_info ns87415_chipset __devinitdata = { |
ced3ec8a | 310 | .name = DRV_NAME, |
1da177e4 | 311 | .init_hwif = init_hwif_ns87415, |
ac95beed | 312 | .port_ops = &ns87415_port_ops, |
5e37bdc0 | 313 | .dma_ops = &ns87415_dma_ops, |
33c1002e | 314 | .host_flags = IDE_HFLAG_TRUST_BIOS_FOR_DMA | |
5e71d9c5 | 315 | IDE_HFLAG_NO_ATAPI_DMA, |
1da177e4 LT |
316 | }; |
317 | ||
318 | static int __devinit ns87415_init_one(struct pci_dev *dev, const struct pci_device_id *id) | |
319 | { | |
374e042c BZ |
320 | struct ide_port_info d = ns87415_chipset; |
321 | ||
322 | #ifdef CONFIG_SUPERIO | |
323 | if (PCI_SLOT(dev->devfn) == 0xE) { | |
324 | /* Built-in - assume it's under superio. */ | |
325 | d.init_iops = superio_init_iops; | |
326 | d.tp_ops = &superio_tp_ops; | |
327 | } | |
328 | #endif | |
6cdf6eb3 | 329 | return ide_pci_init_one(dev, &d, NULL); |
1da177e4 LT |
330 | } |
331 | ||
9cbcc5e3 BZ |
332 | static const struct pci_device_id ns87415_pci_tbl[] = { |
333 | { PCI_VDEVICE(NS, PCI_DEVICE_ID_NS_87415), 0 }, | |
1da177e4 LT |
334 | { 0, }, |
335 | }; | |
336 | MODULE_DEVICE_TABLE(pci, ns87415_pci_tbl); | |
337 | ||
338 | static struct pci_driver driver = { | |
339 | .name = "NS87415_IDE", | |
340 | .id_table = ns87415_pci_tbl, | |
341 | .probe = ns87415_init_one, | |
aa6e518d | 342 | .remove = ide_pci_remove, |
1da177e4 LT |
343 | }; |
344 | ||
82ab1eec | 345 | static int __init ns87415_ide_init(void) |
1da177e4 LT |
346 | { |
347 | return ide_pci_register_driver(&driver); | |
348 | } | |
349 | ||
aa6e518d BZ |
350 | static void __exit ns87415_ide_exit(void) |
351 | { | |
352 | pci_unregister_driver(&driver); | |
353 | } | |
354 | ||
1da177e4 | 355 | module_init(ns87415_ide_init); |
aa6e518d | 356 | module_exit(ns87415_ide_exit); |
1da177e4 LT |
357 | |
358 | MODULE_AUTHOR("Mark Lord, Eddie Dost, Andre Hedrick"); | |
359 | MODULE_DESCRIPTION("PCI driver module for NS87415 IDE"); | |
360 | MODULE_LICENSE("GPL"); |