2 * Linux driver attachment glue for PCI based U320 controllers.
4 * Copyright (c) 2000-2001 Adaptec Inc.
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39 * $Id: //depot/aic7xxx/linux/drivers/scsi/aic7xxx/aic79xx_osm_pci.c#25 $
42 #include "aic79xx_osm.h"
43 #include "aic79xx_inline.h"
44 #include "aic79xx_pci.h"
46 /* Define the macro locally since it's different for different class of chips.
52 static const struct pci_device_id ahd_linux_pci_id_table[] = {
53 /* aic7901 based controllers */
57 /* aic7902 based controllers */
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),
75 MODULE_DEVICE_TABLE(pci, ahd_linux_pci_id_table);
79 ahd_linux_pci_dev_suspend(struct pci_dev *pdev, pm_message_t mesg)
81 struct ahd_softc *ahd = pci_get_drvdata(pdev);
84 if ((rc = ahd_suspend(ahd)))
90 pci_disable_device(pdev);
92 if (mesg.event & PM_EVENT_SLEEP)
93 pci_set_power_state(pdev, PCI_D3hot);
99 ahd_linux_pci_dev_resume(struct pci_dev *pdev)
101 struct ahd_softc *ahd = pci_get_drvdata(pdev);
104 pci_set_power_state(pdev, PCI_D0);
105 pci_restore_state(pdev);
107 if ((rc = pci_enable_device(pdev))) {
108 dev_printk(KERN_ERR, &pdev->dev,
109 "failed to enable device after resume (%d)\n", rc);
113 pci_set_master(pdev);
124 ahd_linux_pci_dev_remove(struct pci_dev *pdev)
126 struct ahd_softc *ahd = pci_get_drvdata(pdev);
129 if (ahd->platform_data && ahd->platform_data->host)
130 scsi_remove_host(ahd->platform_data->host);
133 ahd_intr_enable(ahd, FALSE);
139 ahd_linux_pci_inherit_flags(struct ahd_softc *ahd)
141 struct pci_dev *pdev = ahd->dev_softc, *master_pdev;
142 unsigned int master_devfn = PCI_DEVFN(PCI_SLOT(pdev->devfn), 0);
144 master_pdev = pci_get_slot(pdev->bus, master_devfn);
146 struct ahd_softc *master = pci_get_drvdata(master_pdev);
148 ahd->flags &= ~AHD_BIOS_ENABLED;
149 ahd->flags |= master->flags & AHD_BIOS_ENABLED;
151 printk(KERN_ERR "aic79xx: no multichannel peer found!\n");
152 pci_dev_put(master_pdev);
157 ahd_linux_pci_dev_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
160 struct ahd_softc *ahd;
162 const struct ahd_pci_identity *entry;
165 struct device *dev = &pdev->dev;
168 entry = ahd_find_pci_device(pci);
173 * Allocate a softc for this card and
174 * set it up for attachment by our
175 * common detect routine.
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));
181 name = kstrdup(buf, GFP_ATOMIC);
184 ahd = ahd_alloc(NULL, name);
187 if (pci_enable_device(pdev)) {
191 pci_set_master(pdev);
193 if (sizeof(dma_addr_t) > 4) {
194 const u64 required_mask = dma_get_required_mask(dev);
196 if (required_mask > DMA_BIT_MASK(39) &&
197 dma_set_mask(dev, DMA_BIT_MASK(64)) == 0)
198 ahd->flags |= AHD_64BIT_ADDRESSING;
199 else if (required_mask > DMA_BIT_MASK(32) &&
200 dma_set_mask(dev, DMA_BIT_MASK(39)) == 0)
201 ahd->flags |= AHD_39BIT_ADDRESSING;
203 dma_set_mask(dev, DMA_BIT_MASK(32));
205 dma_set_mask(dev, DMA_BIT_MASK(32));
207 ahd->dev_softc = pci;
208 error = ahd_pci_config(ahd, entry);
215 * Second Function PCI devices need to inherit some
216 * * settings from function 0.
218 if ((ahd->features & AHD_MULTI_FUNC) && PCI_FUNC(pdev->devfn) != 0)
219 ahd_linux_pci_inherit_flags(ahd);
221 pci_set_drvdata(pdev, ahd);
223 ahd_linux_register_host(ahd, &aic79xx_driver_template);
227 static struct pci_driver aic79xx_pci_driver = {
229 .probe = ahd_linux_pci_dev_probe,
231 .suspend = ahd_linux_pci_dev_suspend,
232 .resume = ahd_linux_pci_dev_resume,
234 .remove = ahd_linux_pci_dev_remove,
235 .id_table = ahd_linux_pci_id_table
239 ahd_linux_pci_init(void)
241 return pci_register_driver(&aic79xx_pci_driver);
245 ahd_linux_pci_exit(void)
247 pci_unregister_driver(&aic79xx_pci_driver);
251 ahd_linux_pci_reserve_io_regions(struct ahd_softc *ahd, resource_size_t *base,
252 resource_size_t *base2)
254 *base = pci_resource_start(ahd->dev_softc, 0);
256 * This is really the 3rd bar and should be at index 2,
257 * but the Linux PCI code doesn't know how to "count" 64bit
260 *base2 = pci_resource_start(ahd->dev_softc, 3);
261 if (*base == 0 || *base2 == 0)
263 if (!request_region(*base, 256, "aic79xx"))
265 if (!request_region(*base2, 256, "aic79xx")) {
266 release_region(*base, 256);
273 ahd_linux_pci_reserve_mem_region(struct ahd_softc *ahd,
274 resource_size_t *bus_addr,
275 uint8_t __iomem **maddr)
277 resource_size_t start;
278 resource_size_t base_page;
282 if (aic79xx_allow_memio == 0)
285 if ((ahd->bugs & AHD_PCIX_MMAPIO_BUG) != 0)
288 start = pci_resource_start(ahd->dev_softc, 1);
289 base_page = start & PAGE_MASK;
290 base_offset = start - base_page;
293 if (!request_mem_region(start, 0x1000, "aic79xx"))
296 *maddr = ioremap_nocache(base_page, base_offset + 512);
297 if (*maddr == NULL) {
299 release_mem_region(start, 0x1000);
301 *maddr += base_offset;
309 ahd_pci_map_registers(struct ahd_softc *ahd)
312 resource_size_t base;
313 uint8_t __iomem *maddr;
317 * If its allowed, we prefer memory mapped access.
319 command = ahd_pci_read_config(ahd->dev_softc, PCIR_COMMAND, 4);
320 command &= ~(PCIM_CMD_PORTEN|PCIM_CMD_MEMEN);
323 error = ahd_linux_pci_reserve_mem_region(ahd, &base, &maddr);
325 ahd->platform_data->mem_busaddr = base;
326 ahd->tags[0] = BUS_SPACE_MEMIO;
327 ahd->bshs[0].maddr = maddr;
328 ahd->tags[1] = BUS_SPACE_MEMIO;
329 ahd->bshs[1].maddr = maddr + 0x100;
330 ahd_pci_write_config(ahd->dev_softc, PCIR_COMMAND,
331 command | PCIM_CMD_MEMEN, 4);
333 if (ahd_pci_test_register_access(ahd) != 0) {
335 printk("aic79xx: PCI Device %d:%d:%d "
336 "failed memory mapped test. Using PIO.\n",
337 ahd_get_pci_bus(ahd->dev_softc),
338 ahd_get_pci_slot(ahd->dev_softc),
339 ahd_get_pci_function(ahd->dev_softc));
341 release_mem_region(ahd->platform_data->mem_busaddr,
343 ahd->bshs[0].maddr = NULL;
346 command |= PCIM_CMD_MEMEN;
347 } else if (bootverbose) {
348 printk("aic79xx: PCI%d:%d:%d MEM region 0x%llx "
349 "unavailable. Cannot memory map device.\n",
350 ahd_get_pci_bus(ahd->dev_softc),
351 ahd_get_pci_slot(ahd->dev_softc),
352 ahd_get_pci_function(ahd->dev_softc),
353 (unsigned long long)base);
357 resource_size_t base2;
359 error = ahd_linux_pci_reserve_io_regions(ahd, &base, &base2);
361 ahd->tags[0] = BUS_SPACE_PIO;
362 ahd->tags[1] = BUS_SPACE_PIO;
363 ahd->bshs[0].ioport = (u_long)base;
364 ahd->bshs[1].ioport = (u_long)base2;
365 command |= PCIM_CMD_PORTEN;
367 printk("aic79xx: PCI%d:%d:%d IO regions 0x%llx and "
368 "0x%llx unavailable. Cannot map device.\n",
369 ahd_get_pci_bus(ahd->dev_softc),
370 ahd_get_pci_slot(ahd->dev_softc),
371 ahd_get_pci_function(ahd->dev_softc),
372 (unsigned long long)base,
373 (unsigned long long)base2);
376 ahd_pci_write_config(ahd->dev_softc, PCIR_COMMAND, command, 4);
381 ahd_pci_map_int(struct ahd_softc *ahd)
385 error = request_irq(ahd->dev_softc->irq, ahd_linux_isr,
386 IRQF_SHARED, "aic79xx", ahd);
388 ahd->platform_data->irq = ahd->dev_softc->irq;
394 ahd_power_state_change(struct ahd_softc *ahd, ahd_power_state new_state)
396 pci_set_power_state(ahd->dev_softc, new_state);