2 * Linux driver attachment glue for PCI based controllers.
4 * Copyright (c) 2000-2001 Adaptec Inc.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
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.
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.
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.
39 * $Id: //depot/aic7xxx/linux/drivers/scsi/aic7xxx/aic7xxx_osm_pci.c#47 $
42 #include "aic7xxx_osm.h"
44 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,4,0)
50 static int ahc_linux_pci_dev_probe(struct pci_dev *pdev,
51 const struct pci_device_id *ent);
52 static int ahc_linux_pci_reserve_io_region(struct ahc_softc *ahc,
54 static int ahc_linux_pci_reserve_mem_region(struct ahc_softc *ahc,
57 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
58 static void ahc_linux_pci_dev_remove(struct pci_dev *pdev);
60 /* We do our own ID filtering. So, grab all SCSI storage class devices. */
61 static struct pci_device_id ahc_linux_pci_id_table[] = {
63 0x9004, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
64 PCI_CLASS_STORAGE_SCSI << 8, 0xFFFF00, 0
67 0x9005, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
68 PCI_CLASS_STORAGE_SCSI << 8, 0xFFFF00, 0
73 MODULE_DEVICE_TABLE(pci, ahc_linux_pci_id_table);
75 struct pci_driver aic7xxx_pci_driver = {
77 .probe = ahc_linux_pci_dev_probe,
78 .remove = ahc_linux_pci_dev_remove,
79 .id_table = ahc_linux_pci_id_table
83 ahc_linux_pci_dev_remove(struct pci_dev *pdev)
85 struct ahc_softc *ahc;
89 * We should be able to just perform
90 * the free directly, but check our
91 * list for extra sanity.
94 ahc = ahc_find_softc((struct ahc_softc *)pci_get_drvdata(pdev));
99 ahc_intr_enable(ahc, FALSE);
105 #endif /* !LINUX_VERSION_CODE < KERNEL_VERSION(2,4,0) */
108 ahc_linux_pci_dev_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
111 bus_addr_t mask_39bit;
112 struct ahc_softc *ahc;
114 struct ahc_pci_identity *entry;
119 * Some BIOSen report the same device multiple times.
121 TAILQ_FOREACH(ahc, &ahc_tailq, links) {
122 struct pci_dev *probed_pdev;
124 probed_pdev = ahc->dev_softc;
125 if (probed_pdev->bus->number == pdev->bus->number
126 && probed_pdev->devfn == pdev->devfn)
130 /* Skip duplicate. */
135 entry = ahc_find_pci_device(pci);
140 * Allocate a softc for this card and
141 * set it up for attachment by our
142 * common detect routine.
144 sprintf(buf, "ahc_pci:%d:%d:%d",
145 ahc_get_pci_bus(pci),
146 ahc_get_pci_slot(pci),
147 ahc_get_pci_function(pci));
148 name = malloc(strlen(buf) + 1, M_DEVBUF, M_NOWAIT);
152 ahc = ahc_alloc(NULL, name);
155 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
156 if (pci_enable_device(pdev)) {
160 pci_set_master(pdev);
162 mask_39bit = (bus_addr_t)0x7FFFFFFFFFULL;
163 if (sizeof(bus_addr_t) > 4
164 && ahc_linux_get_memsize() > 0x80000000
165 && ahc_pci_set_dma_mask(pdev, mask_39bit) == 0) {
166 ahc->flags |= AHC_39BIT_ADDRESSING;
167 ahc->platform_data->hw_dma_mask = mask_39bit;
169 if (ahc_pci_set_dma_mask(pdev, 0xFFFFFFFF)) {
170 printk(KERN_WARNING "aic7xxx: No suitable DMA available.\n");
173 ahc->platform_data->hw_dma_mask = 0xFFFFFFFF;
176 ahc->dev_softc = pci;
177 error = ahc_pci_config(ahc, entry);
182 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
183 pci_set_drvdata(pdev, ahc);
184 if (aic7xxx_detect_complete) {
185 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
186 ahc_linux_register_host(ahc, &aic7xxx_driver_template);
188 printf("aic7xxx: ignoring PCI device found after "
198 ahc_linux_pci_init(void)
200 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
201 return (pci_module_init(&aic7xxx_pci_driver));
203 struct pci_dev *pdev;
207 /* If we don't have a PCI bus, we can't find any adapters. */
208 if (pci_present() == 0)
213 class = PCI_CLASS_STORAGE_SCSI << 8;
214 while ((pdev = pci_find_class(class, pdev)) != NULL) {
219 error = ahc_linux_pci_dev_probe(pdev, /*pci_devid*/NULL);
228 ahc_linux_pci_exit(void)
230 pci_unregister_driver(&aic7xxx_pci_driver);
234 ahc_linux_pci_reserve_io_region(struct ahc_softc *ahc, u_long *base)
236 if (aic7xxx_allow_memio == 0)
239 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,0)
240 *base = pci_resource_start(ahc->dev_softc, 0);
242 *base = ahc_pci_read_config(ahc->dev_softc, PCIR_MAPS, 4);
243 *base &= PCI_BASE_ADDRESS_IO_MASK;
247 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,4,0)
248 if (check_region(*base, 256) != 0)
250 request_region(*base, 256, "aic7xxx");
252 if (request_region(*base, 256, "aic7xxx") == 0)
259 ahc_linux_pci_reserve_mem_region(struct ahc_softc *ahc,
269 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,0)
270 start = pci_resource_start(ahc->dev_softc, 1);
271 base_page = start & PAGE_MASK;
272 base_offset = start - base_page;
274 start = ahc_pci_read_config(ahc->dev_softc, PCIR_MAPS+4, 4);
275 base_offset = start & PCI_BASE_ADDRESS_MEM_MASK;
276 base_page = base_offset & PAGE_MASK;
277 base_offset -= base_page;
281 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
282 if (request_mem_region(start, 0x1000, "aic7xxx") == 0)
286 *maddr = ioremap_nocache(base_page, base_offset + 256);
287 if (*maddr == NULL) {
289 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
290 release_mem_region(start, 0x1000);
293 *maddr += base_offset;
301 ahc_pci_map_registers(struct ahc_softc *ahc)
309 * If its allowed, we prefer memory mapped access.
311 command = ahc_pci_read_config(ahc->dev_softc, PCIR_COMMAND, 4);
312 command &= ~(PCIM_CMD_PORTEN|PCIM_CMD_MEMEN);
315 error = ahc_linux_pci_reserve_mem_region(ahc, &base, &maddr);
317 ahc->platform_data->mem_busaddr = base;
318 ahc->tag = BUS_SPACE_MEMIO;
319 ahc->bsh.maddr = maddr;
320 ahc_pci_write_config(ahc->dev_softc, PCIR_COMMAND,
321 command | PCIM_CMD_MEMEN, 4);
324 * Do a quick test to see if memory mapped
325 * I/O is functioning correctly.
327 if (ahc_pci_test_register_access(ahc) != 0) {
329 printf("aic7xxx: PCI Device %d:%d:%d "
330 "failed memory mapped test. Using PIO.\n",
331 ahc_get_pci_bus(ahc->dev_softc),
332 ahc_get_pci_slot(ahc->dev_softc),
333 ahc_get_pci_function(ahc->dev_softc));
334 iounmap((void *)((u_long)maddr & PAGE_MASK));
335 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
336 release_mem_region(ahc->platform_data->mem_busaddr,
339 ahc->bsh.maddr = NULL;
342 command |= PCIM_CMD_MEMEN;
344 printf("aic7xxx: PCI%d:%d:%d MEM region 0x%lx "
345 "unavailable. Cannot memory map device.\n",
346 ahc_get_pci_bus(ahc->dev_softc),
347 ahc_get_pci_slot(ahc->dev_softc),
348 ahc_get_pci_function(ahc->dev_softc),
353 * We always prefer memory mapped access.
357 error = ahc_linux_pci_reserve_io_region(ahc, &base);
359 ahc->tag = BUS_SPACE_PIO;
360 ahc->bsh.ioport = base;
361 command |= PCIM_CMD_PORTEN;
363 printf("aic7xxx: PCI%d:%d:%d IO region 0x%lx[0..255] "
364 "unavailable. Cannot map device.\n",
365 ahc_get_pci_bus(ahc->dev_softc),
366 ahc_get_pci_slot(ahc->dev_softc),
367 ahc_get_pci_function(ahc->dev_softc),
371 ahc_pci_write_config(ahc->dev_softc, PCIR_COMMAND, command, 4);
376 ahc_pci_map_int(struct ahc_softc *ahc)
380 error = request_irq(ahc->dev_softc->irq, ahc_linux_isr,
381 SA_SHIRQ, "aic7xxx", ahc);
383 ahc->platform_data->irq = ahc->dev_softc->irq;
389 ahc_power_state_change(struct ahc_softc *ahc, ahc_power_state new_state)
391 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
392 pci_set_power_state(ahc->dev_softc, new_state);
398 * Traverse the capability list looking for
399 * the power management capability.
402 cap_offset = ahc_pci_read_config(ahc->dev_softc,
403 PCIR_CAP_PTR, /*bytes*/1);
404 while (cap_offset != 0) {
406 cap = ahc_pci_read_config(ahc->dev_softc,
407 cap_offset, /*bytes*/4);
408 if ((cap & 0xFF) == 1
409 && ((cap >> 16) & 0x3) > 0) {
412 pm_control = ahc_pci_read_config(ahc->dev_softc,
416 pm_control |= new_state;
417 ahc_pci_write_config(ahc->dev_softc,
419 pm_control, /*bytes*/2);
422 cap_offset = (cap >> 8) & 0xFF;