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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * generic/default IDE host driver
3 *
Bartlomiej Zolnierkiewicz52913ab2009-03-31 20:15:24 +02004 * Copyright (C) 2004, 2008-2009 Bartlomiej Zolnierkiewicz
Linus Torvalds1da177e2005-04-16 15:20:36 -07005 * This code was split off from ide.c. See it for original copyrights.
6 *
7 * May be copied or modified under the terms of the GNU General Public License.
8 */
9
10#include <linux/kernel.h>
11#include <linux/init.h>
12#include <linux/module.h>
13#include <linux/ide.h>
Borislav Petkov20df4292008-10-10 22:39:35 +020014#include <linux/pci_ids.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070015
Bartlomiej Zolnierkiewicz44654612009-03-31 20:15:24 +020016/* FIXME: convert arm and m32r to use ide_platform host driver */
17#ifdef CONFIG_ARM
18#include <asm/irq.h>
19#endif
Bartlomiej Zolnierkiewiczf01d35d2008-07-24 22:53:31 +020020#ifdef CONFIG_M32R
21#include <asm/m32r.h>
22#endif
23
Bartlomiej Zolnierkiewiczf0298512008-04-18 00:46:23 +020024#define DRV_NAME "ide_generic"
25
Borislav Petkov20df4292008-10-10 22:39:35 +020026static int probe_mask;
Bartlomiej Zolnierkiewicz0cbccbc2008-06-15 21:00:24 +020027module_param(probe_mask, int, 0);
28MODULE_PARM_DESC(probe_mask, "probe mask for legacy ISA IDE ports");
29
Bartlomiej Zolnierkiewicze518e582009-03-27 12:46:17 +010030static const struct ide_port_info ide_generic_port_info = {
31 .host_flags = IDE_HFLAG_NO_DMA,
Bartlomiej Zolnierkiewicz29e52cf2009-05-17 19:12:22 +020032 .chipset = ide_generic,
Bartlomiej Zolnierkiewicze518e582009-03-27 12:46:17 +010033};
34
Bartlomiej Zolnierkiewicz44654612009-03-31 20:15:24 +020035#ifdef CONFIG_ARM
36static const u16 legacy_bases[] = { 0x1f0 };
37static const int legacy_irqs[] = { IRQ_HARDDISK };
38#elif defined(CONFIG_PLAT_M32700UT) || defined(CONFIG_PLAT_MAPPI2) || \
39 defined(CONFIG_PLAT_OPSPUT)
Bartlomiej Zolnierkiewiczf01d35d2008-07-24 22:53:31 +020040static const u16 legacy_bases[] = { 0x1f0 };
41static const int legacy_irqs[] = { PLD_IRQ_CFIREQ };
42#elif defined(CONFIG_PLAT_MAPPI3)
43static const u16 legacy_bases[] = { 0x1f0, 0x170 };
44static const int legacy_irqs[] = { PLD_IRQ_CFIREQ, PLD_IRQ_IDEIREQ };
45#elif defined(CONFIG_ALPHA)
46static const u16 legacy_bases[] = { 0x1f0, 0x170, 0x1e8, 0x168 };
47static const int legacy_irqs[] = { 14, 15, 11, 10 };
48#else
49static const u16 legacy_bases[] = { 0x1f0, 0x170, 0x1e8, 0x168, 0x1e0, 0x160 };
50static const int legacy_irqs[] = { 14, 15, 11, 10, 8, 12 };
51#endif
52
Borislav Petkov20df4292008-10-10 22:39:35 +020053static void ide_generic_check_pci_legacy_iobases(int *primary, int *secondary)
54{
Bartlomiej Zolnierkiewicz44654612009-03-31 20:15:24 +020055#ifdef CONFIG_PCI
Borislav Petkov20df4292008-10-10 22:39:35 +020056 struct pci_dev *p = NULL;
57 u16 val;
58
59 for_each_pci_dev(p) {
Borislav Petkov20df4292008-10-10 22:39:35 +020060 if (pci_resource_start(p, 0) == 0x1f0)
61 *primary = 1;
62 if (pci_resource_start(p, 2) == 0x170)
63 *secondary = 1;
64
65 /* Cyrix CS55{1,2}0 pre SFF MWDMA ATA on the bridge */
66 if (p->vendor == PCI_VENDOR_ID_CYRIX &&
67 (p->device == PCI_DEVICE_ID_CYRIX_5510 ||
68 p->device == PCI_DEVICE_ID_CYRIX_5520))
69 *primary = *secondary = 1;
70
71 /* Intel MPIIX - PIO ATA on non PCI side of bridge */
72 if (p->vendor == PCI_VENDOR_ID_INTEL &&
73 p->device == PCI_DEVICE_ID_INTEL_82371MX) {
Borislav Petkov20df4292008-10-10 22:39:35 +020074 pci_read_config_word(p, 0x6C, &val);
75 if (val & 0x8000) {
76 /* ATA port enabled */
77 if (val & 0x4000)
78 *secondary = 1;
79 else
80 *primary = 1;
81 }
82 }
83 }
Bartlomiej Zolnierkiewicz44654612009-03-31 20:15:24 +020084#endif
Borislav Petkov20df4292008-10-10 22:39:35 +020085}
86
Linus Torvalds1da177e2005-04-16 15:20:36 -070087static int __init ide_generic_init(void)
88{
Bartlomiej Zolnierkiewicz9f36d312009-05-17 19:12:25 +020089 struct ide_hw hw, *hws[] = { &hw };
Bartlomiej Zolnierkiewicz8a695802008-07-23 19:55:59 +020090 unsigned long io_addr;
Bartlomiej Zolnierkiewicz6ccc6d72008-10-13 21:39:42 +020091 int i, rc = 0, primary = 0, secondary = 0;
Bartlomiej Zolnierkiewicz151575e2008-01-26 20:13:05 +010092
Borislav Petkov20df4292008-10-10 22:39:35 +020093 ide_generic_check_pci_legacy_iobases(&primary, &secondary);
94
95 if (!probe_mask) {
96 printk(KERN_INFO DRV_NAME ": please use \"probe_mask=0x3f\" "
97 "module parameter for probing all legacy ISA IDE ports\n");
98
99 if (primary == 0)
100 probe_mask |= 0x1;
101
102 if (secondary == 0)
103 probe_mask |= 0x2;
104 } else
105 printk(KERN_INFO DRV_NAME ": enforcing probing of I/O ports "
106 "upon user request\n");
Bartlomiej Zolnierkiewicz0cbccbc2008-06-15 21:00:24 +0200107
Bartlomiej Zolnierkiewiczf01d35d2008-07-24 22:53:31 +0200108 for (i = 0; i < ARRAY_SIZE(legacy_bases); i++) {
109 io_addr = legacy_bases[i];
Bartlomiej Zolnierkiewiczb2a53bc2008-02-06 02:57:48 +0100110
Bartlomiej Zolnierkiewicz0cbccbc2008-06-15 21:00:24 +0200111 if ((probe_mask & (1 << i)) && io_addr) {
Bartlomiej Zolnierkiewicz16649492008-04-26 22:25:17 +0200112 if (!request_region(io_addr, 8, DRV_NAME)) {
113 printk(KERN_ERR "%s: I/O resource 0x%lX-0x%lX "
114 "not free.\n",
115 DRV_NAME, io_addr, io_addr + 7);
Bartlomiej Zolnierkiewicz44654612009-03-31 20:15:24 +0200116 rc = -EBUSY;
Bartlomiej Zolnierkiewicz16649492008-04-26 22:25:17 +0200117 continue;
118 }
119
120 if (!request_region(io_addr + 0x206, 1, DRV_NAME)) {
121 printk(KERN_ERR "%s: I/O resource 0x%lX "
122 "not free.\n",
123 DRV_NAME, io_addr + 0x206);
124 release_region(io_addr, 8);
Bartlomiej Zolnierkiewicz44654612009-03-31 20:15:24 +0200125 rc = -EBUSY;
Bartlomiej Zolnierkiewicz16649492008-04-26 22:25:17 +0200126 continue;
127 }
128
Bartlomiej Zolnierkiewicz6ccc6d72008-10-13 21:39:42 +0200129 memset(&hw, 0, sizeof(hw));
130 ide_std_init_ports(&hw, io_addr, io_addr + 0x206);
Bartlomiej Zolnierkiewiczf01d35d2008-07-24 22:53:31 +0200131#ifdef CONFIG_IA64
Bartlomiej Zolnierkiewicz6ccc6d72008-10-13 21:39:42 +0200132 hw.irq = isa_irq_to_vector(legacy_irqs[i]);
Bartlomiej Zolnierkiewiczf01d35d2008-07-24 22:53:31 +0200133#else
Bartlomiej Zolnierkiewicz6ccc6d72008-10-13 21:39:42 +0200134 hw.irq = legacy_irqs[i];
Bartlomiej Zolnierkiewiczf01d35d2008-07-24 22:53:31 +0200135#endif
Bartlomiej Zolnierkiewiczdca39832009-05-17 19:12:24 +0200136 rc = ide_host_add(&ide_generic_port_info, hws, 1, NULL);
Bartlomiej Zolnierkiewicz6ccc6d72008-10-13 21:39:42 +0200137 if (rc) {
138 release_region(io_addr + 0x206, 1);
139 release_region(io_addr, 8);
140 }
Bartlomiej Zolnierkiewicz16649492008-04-26 22:25:17 +0200141 }
Bartlomiej Zolnierkiewiczb2a53bc2008-02-06 02:57:48 +0100142 }
Bartlomiej Zolnierkiewicz151575e2008-01-26 20:13:05 +0100143
Bartlomiej Zolnierkiewicz8a695802008-07-23 19:55:59 +0200144 return rc;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700145}
146
147module_init(ide_generic_init);
148
149MODULE_LICENSE("GPL");