Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * Linux driver attachment glue for PCI based U320 controllers. | |
3 | * | |
4 | * Copyright (c) 2000-2001 Adaptec Inc. | |
5 | * All rights reserved. | |
6 | * | |
7 | * Redistribution and use in source and binary forms, with or without | |
8 | * modification, are permitted provided that the following conditions | |
9 | * are met: | |
10 | * 1. Redistributions of source code must retain the above copyright | |
11 | * notice, this list of conditions, and the following disclaimer, | |
12 | * without modification. | |
13 | * 2. Redistributions in binary form must reproduce at minimum a disclaimer | |
14 | * substantially similar to the "NO WARRANTY" disclaimer below | |
15 | * ("Disclaimer") and any redistribution must be conditioned upon | |
16 | * including a substantially similar Disclaimer requirement for further | |
17 | * binary redistribution. | |
18 | * 3. Neither the names of the above-listed copyright holders nor the names | |
19 | * of any contributors may be used to endorse or promote products derived | |
20 | * from this software without specific prior written permission. | |
21 | * | |
22 | * Alternatively, this software may be distributed under the terms of the | |
23 | * GNU General Public License ("GPL") version 2 as published by the Free | |
24 | * Software Foundation. | |
25 | * | |
26 | * NO WARRANTY | |
27 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
28 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
29 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR | |
30 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
31 | * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
32 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
33 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
34 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
35 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING | |
36 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
37 | * POSSIBILITY OF SUCH DAMAGES. | |
38 | * | |
39 | * $Id: //depot/aic7xxx/linux/drivers/scsi/aic7xxx/aic79xx_osm_pci.c#25 $ | |
40 | */ | |
41 | ||
42 | #include "aic79xx_osm.h" | |
43 | #include "aic79xx_inline.h" | |
44 | #include "aic79xx_pci.h" | |
45 | ||
1da177e4 LT |
46 | /* Define the macro locally since it's different for different class of chips. |
47 | */ | |
48 | #define ID(x) \ | |
49 | ID2C(x), \ | |
50 | ID2C(IDIROC(x)) | |
51 | ||
980b306a | 52 | static const struct pci_device_id ahd_linux_pci_id_table[] = { |
1da177e4 LT |
53 | /* aic7901 based controllers */ |
54 | ID(ID_AHA_29320A), | |
55 | ID(ID_AHA_29320ALP), | |
d32adcb8 | 56 | ID(ID_AHA_29320LPE), |
1da177e4 LT |
57 | /* aic7902 based controllers */ |
58 | ID(ID_AHA_29320), | |
59 | ID(ID_AHA_29320B), | |
60 | ID(ID_AHA_29320LP), | |
61 | ID(ID_AHA_39320), | |
62 | ID(ID_AHA_39320_B), | |
63 | ID(ID_AHA_39320A), | |
64 | ID(ID_AHA_39320D), | |
65 | ID(ID_AHA_39320D_HP), | |
66 | ID(ID_AHA_39320D_B), | |
67 | ID(ID_AHA_39320D_B_HP), | |
68 | /* Generic chip probes for devices we don't know exactly. */ | |
69 | ID16(ID_AIC7901 & ID_9005_GENERIC_MASK), | |
70 | ID(ID_AIC7901A & ID_DEV_VENDOR_MASK), | |
71 | ID16(ID_AIC7902 & ID_9005_GENERIC_MASK), | |
72 | { 0 } | |
73 | }; | |
74 | ||
75 | MODULE_DEVICE_TABLE(pci, ahd_linux_pci_id_table); | |
76 | ||
b5720729 | 77 | #ifdef CONFIG_PM |
b5720729 HR |
78 | static int |
79 | ahd_linux_pci_dev_suspend(struct pci_dev *pdev, pm_message_t mesg) | |
80 | { | |
81 | struct ahd_softc *ahd = pci_get_drvdata(pdev); | |
82 | int rc; | |
83 | ||
84 | if ((rc = ahd_suspend(ahd))) | |
85 | return rc; | |
86 | ||
87 | ahd_pci_suspend(ahd); | |
88 | ||
89 | pci_save_state(pdev); | |
90 | pci_disable_device(pdev); | |
91 | ||
3a2d5b70 | 92 | if (mesg.event & PM_EVENT_SLEEP) |
b5720729 HR |
93 | pci_set_power_state(pdev, PCI_D3hot); |
94 | ||
95 | return rc; | |
96 | } | |
97 | ||
98 | static int | |
99 | ahd_linux_pci_dev_resume(struct pci_dev *pdev) | |
100 | { | |
101 | struct ahd_softc *ahd = pci_get_drvdata(pdev); | |
102 | int rc; | |
103 | ||
104 | pci_set_power_state(pdev, PCI_D0); | |
105 | pci_restore_state(pdev); | |
106 | ||
107 | if ((rc = pci_enable_device(pdev))) { | |
108 | dev_printk(KERN_ERR, &pdev->dev, | |
109 | "failed to enable device after resume (%d)\n", rc); | |
110 | return rc; | |
111 | } | |
112 | ||
113 | pci_set_master(pdev); | |
114 | ||
115 | ahd_pci_resume(ahd); | |
116 | ||
117 | ahd_resume(ahd); | |
118 | ||
119 | return rc; | |
120 | } | |
67eb6336 | 121 | #endif |
b5720729 | 122 | |
1da177e4 LT |
123 | static void |
124 | ahd_linux_pci_dev_remove(struct pci_dev *pdev) | |
125 | { | |
85a46523 CH |
126 | struct ahd_softc *ahd = pci_get_drvdata(pdev); |
127 | u_long s; | |
1da177e4 | 128 | |
97af50f6 JB |
129 | if (ahd->platform_data && ahd->platform_data->host) |
130 | scsi_remove_host(ahd->platform_data->host); | |
131 | ||
85a46523 CH |
132 | ahd_lock(ahd, &s); |
133 | ahd_intr_enable(ahd, FALSE); | |
134 | ahd_unlock(ahd, &s); | |
135 | ahd_free(ahd); | |
136 | } | |
137 | ||
138 | static void | |
139 | ahd_linux_pci_inherit_flags(struct ahd_softc *ahd) | |
140 | { | |
141 | struct pci_dev *pdev = ahd->dev_softc, *master_pdev; | |
142 | unsigned int master_devfn = PCI_DEVFN(PCI_SLOT(pdev->devfn), 0); | |
143 | ||
144 | master_pdev = pci_get_slot(pdev->bus, master_devfn); | |
145 | if (master_pdev) { | |
146 | struct ahd_softc *master = pci_get_drvdata(master_pdev); | |
147 | if (master) { | |
148 | ahd->flags &= ~AHD_BIOS_ENABLED; | |
149 | ahd->flags |= master->flags & AHD_BIOS_ENABLED; | |
150 | } else | |
151 | printk(KERN_ERR "aic79xx: no multichannel peer found!\n"); | |
152 | pci_dev_put(master_pdev); | |
153 | } | |
1da177e4 LT |
154 | } |
155 | ||
156 | static int | |
157 | ahd_linux_pci_dev_probe(struct pci_dev *pdev, const struct pci_device_id *ent) | |
158 | { | |
159 | char buf[80]; | |
160 | struct ahd_softc *ahd; | |
161 | ahd_dev_softc_t pci; | |
980b306a | 162 | const struct ahd_pci_identity *entry; |
1da177e4 LT |
163 | char *name; |
164 | int error; | |
19966769 | 165 | struct device *dev = &pdev->dev; |
1da177e4 | 166 | |
1da177e4 LT |
167 | pci = pdev; |
168 | entry = ahd_find_pci_device(pci); | |
169 | if (entry == NULL) | |
170 | return (-ENODEV); | |
171 | ||
172 | /* | |
173 | * Allocate a softc for this card and | |
174 | * set it up for attachment by our | |
175 | * common detect routine. | |
176 | */ | |
177 | sprintf(buf, "ahd_pci:%d:%d:%d", | |
178 | ahd_get_pci_bus(pci), | |
179 | ahd_get_pci_slot(pci), | |
180 | ahd_get_pci_function(pci)); | |
48813cf9 | 181 | name = kmalloc(strlen(buf) + 1, GFP_ATOMIC); |
1da177e4 LT |
182 | if (name == NULL) |
183 | return (-ENOMEM); | |
184 | strcpy(name, buf); | |
185 | ahd = ahd_alloc(NULL, name); | |
186 | if (ahd == NULL) | |
187 | return (-ENOMEM); | |
188 | if (pci_enable_device(pdev)) { | |
189 | ahd_free(ahd); | |
190 | return (-ENODEV); | |
191 | } | |
192 | pci_set_master(pdev); | |
193 | ||
194 | if (sizeof(dma_addr_t) > 4) { | |
19966769 | 195 | const u64 required_mask = dma_get_required_mask(dev); |
1da177e4 | 196 | |
6afd142f | 197 | if (required_mask > DMA_BIT_MASK(39) && |
6a35528a | 198 | dma_set_mask(dev, DMA_BIT_MASK(64)) == 0) |
1da177e4 | 199 | ahd->flags |= AHD_64BIT_ADDRESSING; |
284901a9 | 200 | else if (required_mask > DMA_BIT_MASK(32) && |
6afd142f | 201 | dma_set_mask(dev, DMA_BIT_MASK(39)) == 0) |
1da177e4 | 202 | ahd->flags |= AHD_39BIT_ADDRESSING; |
19966769 | 203 | else |
284901a9 | 204 | dma_set_mask(dev, DMA_BIT_MASK(32)); |
1da177e4 | 205 | } else { |
284901a9 | 206 | dma_set_mask(dev, DMA_BIT_MASK(32)); |
1da177e4 LT |
207 | } |
208 | ahd->dev_softc = pci; | |
209 | error = ahd_pci_config(ahd, entry); | |
210 | if (error != 0) { | |
211 | ahd_free(ahd); | |
212 | return (-error); | |
213 | } | |
85a46523 CH |
214 | |
215 | /* | |
216 | * Second Function PCI devices need to inherit some | |
217 | * * settings from function 0. | |
218 | */ | |
219 | if ((ahd->features & AHD_MULTI_FUNC) && PCI_FUNC(pdev->devfn) != 0) | |
220 | ahd_linux_pci_inherit_flags(ahd); | |
221 | ||
1da177e4 | 222 | pci_set_drvdata(pdev, ahd); |
85a46523 CH |
223 | |
224 | ahd_linux_register_host(ahd, &aic79xx_driver_template); | |
1da177e4 LT |
225 | return (0); |
226 | } | |
227 | ||
67eb6336 FT |
228 | static struct pci_driver aic79xx_pci_driver = { |
229 | .name = "aic79xx", | |
230 | .probe = ahd_linux_pci_dev_probe, | |
231 | #ifdef CONFIG_PM | |
232 | .suspend = ahd_linux_pci_dev_suspend, | |
233 | .resume = ahd_linux_pci_dev_resume, | |
234 | #endif | |
235 | .remove = ahd_linux_pci_dev_remove, | |
236 | .id_table = ahd_linux_pci_id_table | |
237 | }; | |
238 | ||
1da177e4 LT |
239 | int |
240 | ahd_linux_pci_init(void) | |
241 | { | |
dcbccbde | 242 | return pci_register_driver(&aic79xx_pci_driver); |
1da177e4 LT |
243 | } |
244 | ||
245 | void | |
246 | ahd_linux_pci_exit(void) | |
247 | { | |
248 | pci_unregister_driver(&aic79xx_pci_driver); | |
249 | } | |
250 | ||
251 | static int | |
8911c9e3 SS |
252 | ahd_linux_pci_reserve_io_regions(struct ahd_softc *ahd, resource_size_t *base, |
253 | resource_size_t *base2) | |
1da177e4 LT |
254 | { |
255 | *base = pci_resource_start(ahd->dev_softc, 0); | |
256 | /* | |
257 | * This is really the 3rd bar and should be at index 2, | |
258 | * but the Linux PCI code doesn't know how to "count" 64bit | |
259 | * bars. | |
260 | */ | |
261 | *base2 = pci_resource_start(ahd->dev_softc, 3); | |
262 | if (*base == 0 || *base2 == 0) | |
263 | return (ENOMEM); | |
53467e63 | 264 | if (!request_region(*base, 256, "aic79xx")) |
1da177e4 | 265 | return (ENOMEM); |
53467e63 HR |
266 | if (!request_region(*base2, 256, "aic79xx")) { |
267 | release_region(*base, 256); | |
1da177e4 LT |
268 | return (ENOMEM); |
269 | } | |
270 | return (0); | |
271 | } | |
272 | ||
273 | static int | |
274 | ahd_linux_pci_reserve_mem_region(struct ahd_softc *ahd, | |
8911c9e3 | 275 | resource_size_t *bus_addr, |
1da177e4 LT |
276 | uint8_t __iomem **maddr) |
277 | { | |
8911c9e3 SS |
278 | resource_size_t start; |
279 | resource_size_t base_page; | |
1da177e4 | 280 | u_long base_offset; |
53467e63 | 281 | int error = 0; |
1da177e4 LT |
282 | |
283 | if (aic79xx_allow_memio == 0) | |
284 | return (ENOMEM); | |
285 | ||
286 | if ((ahd->bugs & AHD_PCIX_MMAPIO_BUG) != 0) | |
287 | return (ENOMEM); | |
288 | ||
1da177e4 LT |
289 | start = pci_resource_start(ahd->dev_softc, 1); |
290 | base_page = start & PAGE_MASK; | |
291 | base_offset = start - base_page; | |
292 | if (start != 0) { | |
293 | *bus_addr = start; | |
53467e63 | 294 | if (!request_mem_region(start, 0x1000, "aic79xx")) |
1da177e4 | 295 | error = ENOMEM; |
53467e63 HR |
296 | if (!error) { |
297 | *maddr = ioremap_nocache(base_page, base_offset + 512); | |
1da177e4 LT |
298 | if (*maddr == NULL) { |
299 | error = ENOMEM; | |
300 | release_mem_region(start, 0x1000); | |
301 | } else | |
302 | *maddr += base_offset; | |
303 | } | |
304 | } else | |
305 | error = ENOMEM; | |
306 | return (error); | |
307 | } | |
308 | ||
309 | int | |
310 | ahd_pci_map_registers(struct ahd_softc *ahd) | |
311 | { | |
312 | uint32_t command; | |
8911c9e3 | 313 | resource_size_t base; |
1da177e4 LT |
314 | uint8_t __iomem *maddr; |
315 | int error; | |
316 | ||
317 | /* | |
318 | * If its allowed, we prefer memory mapped access. | |
319 | */ | |
320 | command = ahd_pci_read_config(ahd->dev_softc, PCIR_COMMAND, 4); | |
321 | command &= ~(PCIM_CMD_PORTEN|PCIM_CMD_MEMEN); | |
322 | base = 0; | |
323 | maddr = NULL; | |
324 | error = ahd_linux_pci_reserve_mem_region(ahd, &base, &maddr); | |
325 | if (error == 0) { | |
326 | ahd->platform_data->mem_busaddr = base; | |
327 | ahd->tags[0] = BUS_SPACE_MEMIO; | |
328 | ahd->bshs[0].maddr = maddr; | |
329 | ahd->tags[1] = BUS_SPACE_MEMIO; | |
330 | ahd->bshs[1].maddr = maddr + 0x100; | |
331 | ahd_pci_write_config(ahd->dev_softc, PCIR_COMMAND, | |
332 | command | PCIM_CMD_MEMEN, 4); | |
333 | ||
334 | if (ahd_pci_test_register_access(ahd) != 0) { | |
335 | ||
48813cf9 | 336 | printk("aic79xx: PCI Device %d:%d:%d " |
1da177e4 LT |
337 | "failed memory mapped test. Using PIO.\n", |
338 | ahd_get_pci_bus(ahd->dev_softc), | |
339 | ahd_get_pci_slot(ahd->dev_softc), | |
340 | ahd_get_pci_function(ahd->dev_softc)); | |
341 | iounmap(maddr); | |
342 | release_mem_region(ahd->platform_data->mem_busaddr, | |
343 | 0x1000); | |
344 | ahd->bshs[0].maddr = NULL; | |
345 | maddr = NULL; | |
346 | } else | |
347 | command |= PCIM_CMD_MEMEN; | |
348 | } else if (bootverbose) { | |
48813cf9 | 349 | printk("aic79xx: PCI%d:%d:%d MEM region 0x%llx " |
1da177e4 LT |
350 | "unavailable. Cannot memory map device.\n", |
351 | ahd_get_pci_bus(ahd->dev_softc), | |
352 | ahd_get_pci_slot(ahd->dev_softc), | |
353 | ahd_get_pci_function(ahd->dev_softc), | |
8911c9e3 | 354 | (unsigned long long)base); |
1da177e4 LT |
355 | } |
356 | ||
357 | if (maddr == NULL) { | |
8911c9e3 | 358 | resource_size_t base2; |
1da177e4 LT |
359 | |
360 | error = ahd_linux_pci_reserve_io_regions(ahd, &base, &base2); | |
361 | if (error == 0) { | |
362 | ahd->tags[0] = BUS_SPACE_PIO; | |
363 | ahd->tags[1] = BUS_SPACE_PIO; | |
8911c9e3 SS |
364 | ahd->bshs[0].ioport = (u_long)base; |
365 | ahd->bshs[1].ioport = (u_long)base2; | |
1da177e4 LT |
366 | command |= PCIM_CMD_PORTEN; |
367 | } else { | |
48813cf9 | 368 | printk("aic79xx: PCI%d:%d:%d IO regions 0x%llx and " |
8911c9e3 | 369 | "0x%llx unavailable. Cannot map device.\n", |
1da177e4 LT |
370 | ahd_get_pci_bus(ahd->dev_softc), |
371 | ahd_get_pci_slot(ahd->dev_softc), | |
372 | ahd_get_pci_function(ahd->dev_softc), | |
8911c9e3 SS |
373 | (unsigned long long)base, |
374 | (unsigned long long)base2); | |
1da177e4 LT |
375 | } |
376 | } | |
377 | ahd_pci_write_config(ahd->dev_softc, PCIR_COMMAND, command, 4); | |
378 | return (error); | |
379 | } | |
380 | ||
381 | int | |
382 | ahd_pci_map_int(struct ahd_softc *ahd) | |
383 | { | |
384 | int error; | |
385 | ||
386 | error = request_irq(ahd->dev_softc->irq, ahd_linux_isr, | |
1d6f359a | 387 | IRQF_SHARED, "aic79xx", ahd); |
53467e63 | 388 | if (!error) |
1da177e4 LT |
389 | ahd->platform_data->irq = ahd->dev_softc->irq; |
390 | ||
391 | return (-error); | |
392 | } | |
393 | ||
394 | void | |
395 | ahd_power_state_change(struct ahd_softc *ahd, ahd_power_state new_state) | |
396 | { | |
397 | pci_set_power_state(ahd->dev_softc, new_state); | |
398 | } |