2 * Linux driver attachment glue for PCI based controllers.
4 * Copyright (c) 2000-2001 Adaptec Inc.
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39 * $Id: //depot/aic7xxx/linux/drivers/scsi/aic7xxx/aic7xxx_osm_pci.c#47 $
42 #include "aic7xxx_osm.h"
43 #include "aic7xxx_pci.h"
45 /* Define the macro locally since it's different for different class of chips.
47 #define ID(x) ID_C(x, PCI_CLASS_STORAGE_SCSI)
49 static const struct pci_device_id ahc_linux_pci_id_table[] = {
50 /* aic7850 based controllers */
51 ID(ID_AHA_2902_04_10_15_20C_30C),
52 /* aic7860 based controllers */
54 ID(ID_AHA_1480A & ID_DEV_VENDOR_MASK),
55 ID(ID_AHA_2940AU_0 & ID_DEV_VENDOR_MASK),
56 ID(ID_AHA_2940AU_CN & ID_DEV_VENDOR_MASK),
57 ID(ID_AHA_2930C_VAR & ID_DEV_VENDOR_MASK),
58 /* aic7870 based controllers */
65 /* aic7880 based controllers */
66 ID(ID_AHA_2940U & ID_DEV_VENDOR_MASK),
67 ID(ID_AHA_3940U & ID_DEV_VENDOR_MASK),
68 ID(ID_AHA_2944U & ID_DEV_VENDOR_MASK),
69 ID(ID_AHA_3944U & ID_DEV_VENDOR_MASK),
70 ID(ID_AHA_398XU & ID_DEV_VENDOR_MASK),
71 ID(ID_AHA_4944U & ID_DEV_VENDOR_MASK),
72 ID(ID_AHA_2930U & ID_DEV_VENDOR_MASK),
73 ID(ID_AHA_2940U_PRO & ID_DEV_VENDOR_MASK),
74 ID(ID_AHA_2940U_CN & ID_DEV_VENDOR_MASK),
75 /* aic7890 based controllers */
78 ID(ID_AHA_2940U2_OEM),
81 ID16(ID_AIC7890_ARO & ID_AIC7895_ARO_MASK),
83 /* aic7890 based controllers */
91 /* aic7892 based controllers */
92 ID(ID_AHA_2940U_DUAL),
101 /* aic7899 based controllers */
103 ID(ID_AHA_3960D_CPQ),
105 /* Generic chip probes for devices we don't know exactly. */
106 ID(ID_AIC7850 & ID_DEV_VENDOR_MASK),
107 ID(ID_AIC7855 & ID_DEV_VENDOR_MASK),
108 ID(ID_AIC7859 & ID_DEV_VENDOR_MASK),
109 ID(ID_AIC7860 & ID_DEV_VENDOR_MASK),
110 ID(ID_AIC7870 & ID_DEV_VENDOR_MASK),
111 ID(ID_AIC7880 & ID_DEV_VENDOR_MASK),
112 ID16(ID_AIC7890 & ID_9005_GENERIC_MASK),
113 ID16(ID_AIC7892 & ID_9005_GENERIC_MASK),
114 ID(ID_AIC7895 & ID_DEV_VENDOR_MASK),
115 ID16(ID_AIC7896 & ID_9005_GENERIC_MASK),
116 ID16(ID_AIC7899 & ID_9005_GENERIC_MASK),
117 ID(ID_AIC7810 & ID_DEV_VENDOR_MASK),
118 ID(ID_AIC7815 & ID_DEV_VENDOR_MASK),
122 MODULE_DEVICE_TABLE(pci, ahc_linux_pci_id_table);
124 static int __maybe_unused
125 ahc_linux_pci_dev_suspend(struct device *dev)
127 struct ahc_softc *ahc = dev_get_drvdata(dev);
129 return ahc_suspend(ahc);
132 static int __maybe_unused
133 ahc_linux_pci_dev_resume(struct device *dev)
135 struct ahc_softc *ahc = dev_get_drvdata(dev);
139 return (ahc_resume(ahc));
143 ahc_linux_pci_dev_remove(struct pci_dev *pdev)
145 struct ahc_softc *ahc = pci_get_drvdata(pdev);
148 if (ahc->platform_data && ahc->platform_data->host)
149 scsi_remove_host(ahc->platform_data->host);
152 ahc_intr_enable(ahc, FALSE);
158 ahc_linux_pci_inherit_flags(struct ahc_softc *ahc)
160 struct pci_dev *pdev = ahc->dev_softc, *master_pdev;
161 unsigned int master_devfn = PCI_DEVFN(PCI_SLOT(pdev->devfn), 0);
163 master_pdev = pci_get_slot(pdev->bus, master_devfn);
165 struct ahc_softc *master = pci_get_drvdata(master_pdev);
167 ahc->flags &= ~AHC_BIOS_ENABLED;
168 ahc->flags |= master->flags & AHC_BIOS_ENABLED;
170 ahc->flags &= ~AHC_PRIMARY_CHANNEL;
171 ahc->flags |= master->flags & AHC_PRIMARY_CHANNEL;
173 printk(KERN_ERR "aic7xxx: no multichannel peer found!\n");
174 pci_dev_put(master_pdev);
179 ahc_linux_pci_dev_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
182 const uint64_t mask_39bit = 0x7FFFFFFFFFULL;
183 struct ahc_softc *ahc;
185 const struct ahc_pci_identity *entry;
188 struct device *dev = &pdev->dev;
191 entry = ahc_find_pci_device(pci);
196 * Allocate a softc for this card and
197 * set it up for attachment by our
198 * common detect routine.
200 sprintf(buf, "ahc_pci:%d:%d:%d",
201 ahc_get_pci_bus(pci),
202 ahc_get_pci_slot(pci),
203 ahc_get_pci_function(pci));
204 name = kstrdup(buf, GFP_ATOMIC);
207 ahc = ahc_alloc(NULL, name);
210 if (pci_enable_device(pdev)) {
214 pci_set_master(pdev);
216 if (sizeof(dma_addr_t) > 4
217 && ahc->features & AHC_LARGE_SCBS
218 && dma_set_mask(dev, mask_39bit) == 0
219 && dma_get_required_mask(dev) > DMA_BIT_MASK(32)) {
220 ahc->flags |= AHC_39BIT_ADDRESSING;
222 if (dma_set_mask(dev, DMA_BIT_MASK(32))) {
224 printk(KERN_WARNING "aic7xxx: No suitable DMA available.\n");
228 ahc->dev_softc = pci;
229 ahc->dev = &pci->dev;
230 error = ahc_pci_config(ahc, entry);
237 * Second Function PCI devices need to inherit some
238 * settings from function 0.
240 if ((ahc->features & AHC_MULTI_FUNC) && PCI_FUNC(pdev->devfn) != 0)
241 ahc_linux_pci_inherit_flags(ahc);
243 pci_set_drvdata(pdev, ahc);
244 ahc_linux_register_host(ahc, &aic7xxx_driver_template);
248 /******************************* PCI Routines *********************************/
250 ahc_pci_read_config(ahc_dev_softc_t pci, int reg, int width)
257 pci_read_config_byte(pci, reg, &retval);
263 pci_read_config_word(pci, reg, &retval);
269 pci_read_config_dword(pci, reg, &retval);
273 panic("ahc_pci_read_config: Read size too big");
280 ahc_pci_write_config(ahc_dev_softc_t pci, int reg, uint32_t value, int width)
284 pci_write_config_byte(pci, reg, value);
287 pci_write_config_word(pci, reg, value);
290 pci_write_config_dword(pci, reg, value);
293 panic("ahc_pci_write_config: Write size too big");
298 static SIMPLE_DEV_PM_OPS(ahc_linux_pci_dev_pm_ops,
299 ahc_linux_pci_dev_suspend,
300 ahc_linux_pci_dev_resume);
302 static struct pci_driver aic7xxx_pci_driver = {
304 .probe = ahc_linux_pci_dev_probe,
305 .driver.pm = &ahc_linux_pci_dev_pm_ops,
306 .remove = ahc_linux_pci_dev_remove,
307 .id_table = ahc_linux_pci_id_table
311 ahc_linux_pci_init(void)
313 return pci_register_driver(&aic7xxx_pci_driver);
317 ahc_linux_pci_exit(void)
319 pci_unregister_driver(&aic7xxx_pci_driver);
323 ahc_linux_pci_reserve_io_region(struct ahc_softc *ahc, resource_size_t *base)
325 if (aic7xxx_allow_memio == 0)
328 *base = pci_resource_start(ahc->dev_softc, 0);
331 if (!request_region(*base, 256, "aic7xxx"))
337 ahc_linux_pci_reserve_mem_region(struct ahc_softc *ahc,
338 resource_size_t *bus_addr,
339 uint8_t __iomem **maddr)
341 resource_size_t start;
345 start = pci_resource_start(ahc->dev_softc, 1);
348 if (!request_mem_region(start, 0x1000, "aic7xxx"))
351 *maddr = ioremap(start, 256);
352 if (*maddr == NULL) {
354 release_mem_region(start, 0x1000);
363 ahc_pci_map_registers(struct ahc_softc *ahc)
366 resource_size_t base;
367 uint8_t __iomem *maddr;
371 * If its allowed, we prefer memory mapped access.
373 command = ahc_pci_read_config(ahc->dev_softc, PCIR_COMMAND, 4);
374 command &= ~(PCIM_CMD_PORTEN|PCIM_CMD_MEMEN);
377 error = ahc_linux_pci_reserve_mem_region(ahc, &base, &maddr);
379 ahc->platform_data->mem_busaddr = base;
380 ahc->tag = BUS_SPACE_MEMIO;
381 ahc->bsh.maddr = maddr;
382 ahc_pci_write_config(ahc->dev_softc, PCIR_COMMAND,
383 command | PCIM_CMD_MEMEN, 4);
386 * Do a quick test to see if memory mapped
387 * I/O is functioning correctly.
389 if (ahc_pci_test_register_access(ahc) != 0) {
391 printk("aic7xxx: PCI Device %d:%d:%d "
392 "failed memory mapped test. Using PIO.\n",
393 ahc_get_pci_bus(ahc->dev_softc),
394 ahc_get_pci_slot(ahc->dev_softc),
395 ahc_get_pci_function(ahc->dev_softc));
397 release_mem_region(ahc->platform_data->mem_busaddr,
399 ahc->bsh.maddr = NULL;
402 command |= PCIM_CMD_MEMEN;
404 printk("aic7xxx: PCI%d:%d:%d MEM region 0x%llx "
405 "unavailable. Cannot memory map device.\n",
406 ahc_get_pci_bus(ahc->dev_softc),
407 ahc_get_pci_slot(ahc->dev_softc),
408 ahc_get_pci_function(ahc->dev_softc),
409 (unsigned long long)base);
413 * We always prefer memory mapped access.
417 error = ahc_linux_pci_reserve_io_region(ahc, &base);
419 ahc->tag = BUS_SPACE_PIO;
420 ahc->bsh.ioport = (u_long)base;
421 command |= PCIM_CMD_PORTEN;
423 printk("aic7xxx: PCI%d:%d:%d IO region 0x%llx[0..255] "
424 "unavailable. Cannot map device.\n",
425 ahc_get_pci_bus(ahc->dev_softc),
426 ahc_get_pci_slot(ahc->dev_softc),
427 ahc_get_pci_function(ahc->dev_softc),
428 (unsigned long long)base);
431 ahc_pci_write_config(ahc->dev_softc, PCIR_COMMAND, command, 4);
436 ahc_pci_map_int(struct ahc_softc *ahc)
440 error = request_irq(ahc->dev_softc->irq, ahc_linux_isr,
441 IRQF_SHARED, "aic7xxx", ahc);
443 ahc->platform_data->irq = ahc->dev_softc->irq;