Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
Bartlomiej Zolnierkiewicz | 59bca8c | 2008-02-01 23:09:33 +0100 | [diff] [blame] | 2 | * Copyright (C) 1998-2000 Andre Hedrick <andre@linux-ide.org> |
| 3 | * Copyright (C) 1995-1998 Mark Lord |
| 4 | * Copyright (C) 2007 Bartlomiej Zolnierkiewicz |
Bartlomiej Zolnierkiewicz | 58f189f | 2008-02-01 23:09:33 +0100 | [diff] [blame] | 5 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6 | * May be copied or modified under the terms of the GNU General Public License |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7 | */ |
| 8 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 9 | #include <linux/types.h> |
| 10 | #include <linux/kernel.h> |
| 11 | #include <linux/pci.h> |
| 12 | #include <linux/init.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 13 | #include <linux/interrupt.h> |
| 14 | #include <linux/ide.h> |
| 15 | #include <linux/dma-mapping.h> |
| 16 | |
| 17 | #include <asm/io.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 18 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 19 | /** |
| 20 | * ide_setup_pci_baseregs - place a PCI IDE controller native |
| 21 | * @dev: PCI device of interface to switch native |
| 22 | * @name: Name of interface |
| 23 | * |
| 24 | * We attempt to place the PCI interface into PCI native mode. If |
| 25 | * we succeed the BARs are ok and the controller is in PCI mode. |
Paolo Ciarrocchi | 846bb88 | 2008-04-26 17:36:39 +0200 | [diff] [blame] | 26 | * Returns 0 on success or an errno code. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 27 | * |
| 28 | * FIXME: if we program the interface and then fail to set the BARS |
| 29 | * we don't switch it back to legacy mode. Do we actually care ?? |
| 30 | */ |
Paolo Ciarrocchi | 846bb88 | 2008-04-26 17:36:39 +0200 | [diff] [blame] | 31 | |
| 32 | static int ide_setup_pci_baseregs(struct pci_dev *dev, const char *name) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 33 | { |
| 34 | u8 progif = 0; |
| 35 | |
| 36 | /* |
| 37 | * Place both IDE interfaces into PCI "native" mode: |
| 38 | */ |
| 39 | if (pci_read_config_byte(dev, PCI_CLASS_PROG, &progif) || |
| 40 | (progif & 5) != 5) { |
| 41 | if ((progif & 0xa) != 0xa) { |
Bartlomiej Zolnierkiewicz | 28cfd8a | 2008-07-24 22:53:31 +0200 | [diff] [blame] | 42 | printk(KERN_INFO "%s %s: device not capable of full " |
| 43 | "native PCI mode\n", name, pci_name(dev)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 44 | return -EOPNOTSUPP; |
| 45 | } |
Bartlomiej Zolnierkiewicz | 28cfd8a | 2008-07-24 22:53:31 +0200 | [diff] [blame] | 46 | printk(KERN_INFO "%s %s: placing both ports into native PCI " |
| 47 | "mode\n", name, pci_name(dev)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 48 | (void) pci_write_config_byte(dev, PCI_CLASS_PROG, progif|5); |
| 49 | if (pci_read_config_byte(dev, PCI_CLASS_PROG, &progif) || |
| 50 | (progif & 5) != 5) { |
Bartlomiej Zolnierkiewicz | 28cfd8a | 2008-07-24 22:53:31 +0200 | [diff] [blame] | 51 | printk(KERN_ERR "%s %s: rewrite of PROGIF failed, " |
| 52 | "wanted 0x%04x, got 0x%04x\n", |
| 53 | name, pci_name(dev), progif | 5, progif); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 54 | return -EOPNOTSUPP; |
| 55 | } |
| 56 | } |
| 57 | return 0; |
| 58 | } |
| 59 | |
| 60 | #ifdef CONFIG_BLK_DEV_IDEDMA_PCI |
Bartlomiej Zolnierkiewicz | 28cfd8a | 2008-07-24 22:53:31 +0200 | [diff] [blame] | 61 | static int ide_pci_clear_simplex(unsigned long dma_base, const char *name) |
Bartlomiej Zolnierkiewicz | 8ac2b42a | 2008-02-01 23:09:30 +0100 | [diff] [blame] | 62 | { |
| 63 | u8 dma_stat = inb(dma_base + 2); |
| 64 | |
| 65 | outb(dma_stat & 0x60, dma_base + 2); |
| 66 | dma_stat = inb(dma_base + 2); |
Bartlomiej Zolnierkiewicz | 28cfd8a | 2008-07-24 22:53:31 +0200 | [diff] [blame] | 67 | |
| 68 | return (dma_stat & 0x80) ? 1 : 0; |
Bartlomiej Zolnierkiewicz | 8ac2b42a | 2008-02-01 23:09:30 +0100 | [diff] [blame] | 69 | } |
| 70 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 71 | /** |
Bartlomiej Zolnierkiewicz | b123f56 | 2008-04-26 22:25:22 +0200 | [diff] [blame] | 72 | * ide_pci_dma_base - setup BMIBA |
Bartlomiej Zolnierkiewicz | 039788e | 2007-10-20 00:32:34 +0200 | [diff] [blame] | 73 | * @hwif: IDE interface |
Bartlomiej Zolnierkiewicz | b123f56 | 2008-04-26 22:25:22 +0200 | [diff] [blame] | 74 | * @d: IDE port info |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 75 | * |
Bartlomiej Zolnierkiewicz | c58e79d | 2007-10-16 22:29:56 +0200 | [diff] [blame] | 76 | * Fetch the DMA Bus-Master-I/O-Base-Address (BMIBA) from PCI space. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 77 | */ |
| 78 | |
Bartlomiej Zolnierkiewicz | b123f56 | 2008-04-26 22:25:22 +0200 | [diff] [blame] | 79 | unsigned long ide_pci_dma_base(ide_hwif_t *hwif, const struct ide_port_info *d) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 80 | { |
Bartlomiej Zolnierkiewicz | 3650165 | 2008-02-01 23:09:31 +0100 | [diff] [blame] | 81 | struct pci_dev *dev = to_pci_dev(hwif->dev); |
| 82 | unsigned long dma_base = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 83 | |
Bartlomiej Zolnierkiewicz | 1357214 | 2008-07-15 21:21:49 +0200 | [diff] [blame] | 84 | if (hwif->host_flags & IDE_HFLAG_MMIO) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 85 | return hwif->dma_base; |
| 86 | |
| 87 | if (hwif->mate && hwif->mate->dma_base) { |
| 88 | dma_base = hwif->mate->dma_base - (hwif->channel ? 0 : 8); |
| 89 | } else { |
Bartlomiej Zolnierkiewicz | 9ffcf36 | 2007-10-19 00:30:07 +0200 | [diff] [blame] | 90 | u8 baridx = (d->host_flags & IDE_HFLAG_CS5520) ? 2 : 4; |
| 91 | |
| 92 | dma_base = pci_resource_start(dev, baridx); |
| 93 | |
Bartlomiej Zolnierkiewicz | aea5d37 | 2008-01-26 20:12:59 +0100 | [diff] [blame] | 94 | if (dma_base == 0) { |
Bartlomiej Zolnierkiewicz | 28cfd8a | 2008-07-24 22:53:31 +0200 | [diff] [blame] | 95 | printk(KERN_ERR "%s %s: DMA base is invalid\n", |
| 96 | d->name, pci_name(dev)); |
Bartlomiej Zolnierkiewicz | aea5d37 | 2008-01-26 20:12:59 +0100 | [diff] [blame] | 97 | return 0; |
| 98 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 99 | } |
| 100 | |
Bartlomiej Zolnierkiewicz | aea5d37 | 2008-01-26 20:12:59 +0100 | [diff] [blame] | 101 | if (hwif->channel) |
| 102 | dma_base += 8; |
| 103 | |
Bartlomiej Zolnierkiewicz | ebb00fb | 2008-07-23 19:55:51 +0200 | [diff] [blame] | 104 | return dma_base; |
| 105 | } |
| 106 | EXPORT_SYMBOL_GPL(ide_pci_dma_base); |
| 107 | |
| 108 | int ide_pci_check_simplex(ide_hwif_t *hwif, const struct ide_port_info *d) |
| 109 | { |
Bartlomiej Zolnierkiewicz | 28cfd8a | 2008-07-24 22:53:31 +0200 | [diff] [blame] | 110 | struct pci_dev *dev = to_pci_dev(hwif->dev); |
Bartlomiej Zolnierkiewicz | ebb00fb | 2008-07-23 19:55:51 +0200 | [diff] [blame] | 111 | u8 dma_stat; |
| 112 | |
| 113 | if (d->host_flags & (IDE_HFLAG_MMIO | IDE_HFLAG_CS5520)) |
Bartlomiej Zolnierkiewicz | 8ac2b42a | 2008-02-01 23:09:30 +0100 | [diff] [blame] | 114 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 115 | |
Bartlomiej Zolnierkiewicz | 8ac2b42a | 2008-02-01 23:09:30 +0100 | [diff] [blame] | 116 | if (d->host_flags & IDE_HFLAG_CLEAR_SIMPLEX) { |
Bartlomiej Zolnierkiewicz | 28cfd8a | 2008-07-24 22:53:31 +0200 | [diff] [blame] | 117 | if (ide_pci_clear_simplex(hwif->dma_base, d->name)) |
| 118 | printk(KERN_INFO "%s %s: simplex device: DMA forced\n", |
| 119 | d->name, pci_name(dev)); |
Bartlomiej Zolnierkiewicz | 8ac2b42a | 2008-02-01 23:09:30 +0100 | [diff] [blame] | 120 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 121 | } |
Bartlomiej Zolnierkiewicz | 8ac2b42a | 2008-02-01 23:09:30 +0100 | [diff] [blame] | 122 | |
| 123 | /* |
| 124 | * If the device claims "simplex" DMA, this means that only one of |
| 125 | * the two interfaces can be trusted with DMA at any point in time |
| 126 | * (so we should enable DMA only on one of the two interfaces). |
| 127 | * |
| 128 | * FIXME: At this point we haven't probed the drives so we can't make |
| 129 | * the appropriate decision. Really we should defer this problem until |
| 130 | * we tune the drive then try to grab DMA ownership if we want to be |
| 131 | * the DMA end. This has to be become dynamic to handle hot-plug. |
| 132 | */ |
Sergei Shtylyov | 592b531 | 2009-01-06 17:21:02 +0100 | [diff] [blame] | 133 | dma_stat = hwif->dma_ops->dma_sff_read_status(hwif); |
Bartlomiej Zolnierkiewicz | 8ac2b42a | 2008-02-01 23:09:30 +0100 | [diff] [blame] | 134 | if ((dma_stat & 0x80) && hwif->mate && hwif->mate->dma_base) { |
Bartlomiej Zolnierkiewicz | 28cfd8a | 2008-07-24 22:53:31 +0200 | [diff] [blame] | 135 | printk(KERN_INFO "%s %s: simplex device: DMA disabled\n", |
| 136 | d->name, pci_name(dev)); |
Bartlomiej Zolnierkiewicz | ebb00fb | 2008-07-23 19:55:51 +0200 | [diff] [blame] | 137 | return -1; |
Bartlomiej Zolnierkiewicz | 8ac2b42a | 2008-02-01 23:09:30 +0100 | [diff] [blame] | 138 | } |
| 139 | out: |
Bartlomiej Zolnierkiewicz | ebb00fb | 2008-07-23 19:55:51 +0200 | [diff] [blame] | 140 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 141 | } |
Bartlomiej Zolnierkiewicz | ebb00fb | 2008-07-23 19:55:51 +0200 | [diff] [blame] | 142 | EXPORT_SYMBOL_GPL(ide_pci_check_simplex); |
Bartlomiej Zolnierkiewicz | d54452f | 2008-04-26 22:25:21 +0200 | [diff] [blame] | 143 | |
| 144 | /* |
| 145 | * Set up BM-DMA capability (PnP BIOS should have done this) |
| 146 | */ |
Bartlomiej Zolnierkiewicz | b123f56 | 2008-04-26 22:25:22 +0200 | [diff] [blame] | 147 | int ide_pci_set_master(struct pci_dev *dev, const char *name) |
Bartlomiej Zolnierkiewicz | d54452f | 2008-04-26 22:25:21 +0200 | [diff] [blame] | 148 | { |
| 149 | u16 pcicmd; |
| 150 | |
| 151 | pci_read_config_word(dev, PCI_COMMAND, &pcicmd); |
| 152 | |
| 153 | if ((pcicmd & PCI_COMMAND_MASTER) == 0) { |
| 154 | pci_set_master(dev); |
| 155 | |
| 156 | if (pci_read_config_word(dev, PCI_COMMAND, &pcicmd) || |
| 157 | (pcicmd & PCI_COMMAND_MASTER) == 0) { |
Bartlomiej Zolnierkiewicz | 28cfd8a | 2008-07-24 22:53:31 +0200 | [diff] [blame] | 158 | printk(KERN_ERR "%s %s: error updating PCICMD\n", |
| 159 | name, pci_name(dev)); |
Bartlomiej Zolnierkiewicz | d54452f | 2008-04-26 22:25:21 +0200 | [diff] [blame] | 160 | return -EIO; |
| 161 | } |
| 162 | } |
| 163 | |
| 164 | return 0; |
| 165 | } |
Bartlomiej Zolnierkiewicz | b123f56 | 2008-04-26 22:25:22 +0200 | [diff] [blame] | 166 | EXPORT_SYMBOL_GPL(ide_pci_set_master); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 167 | #endif /* CONFIG_BLK_DEV_IDEDMA_PCI */ |
| 168 | |
Bartlomiej Zolnierkiewicz | 8562043 | 2007-10-20 00:32:34 +0200 | [diff] [blame] | 169 | void ide_setup_pci_noise(struct pci_dev *dev, const struct ide_port_info *d) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 170 | { |
Bartlomiej Zolnierkiewicz | 28cfd8a | 2008-07-24 22:53:31 +0200 | [diff] [blame] | 171 | printk(KERN_INFO "%s %s: IDE controller (0x%04x:0x%04x rev 0x%02x)\n", |
| 172 | d->name, pci_name(dev), |
| 173 | dev->vendor, dev->device, dev->revision); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 174 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 175 | EXPORT_SYMBOL_GPL(ide_setup_pci_noise); |
| 176 | |
| 177 | |
| 178 | /** |
| 179 | * ide_pci_enable - do PCI enables |
| 180 | * @dev: PCI device |
Bartlomiej Zolnierkiewicz | 039788e | 2007-10-20 00:32:34 +0200 | [diff] [blame] | 181 | * @d: IDE port info |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 182 | * |
| 183 | * Enable the IDE PCI device. We attempt to enable the device in full |
Benjamin Herrenschmidt | 0948391 | 2007-12-20 15:28:09 +1100 | [diff] [blame] | 184 | * but if that fails then we only need IO space. The PCI code should |
| 185 | * have setup the proper resources for us already for controllers in |
| 186 | * legacy mode. |
Paolo Ciarrocchi | 846bb88 | 2008-04-26 17:36:39 +0200 | [diff] [blame] | 187 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 188 | * Returns zero on success or an error code |
| 189 | */ |
Bartlomiej Zolnierkiewicz | 039788e | 2007-10-20 00:32:34 +0200 | [diff] [blame] | 190 | |
Bartlomiej Zolnierkiewicz | 8562043 | 2007-10-20 00:32:34 +0200 | [diff] [blame] | 191 | static int ide_pci_enable(struct pci_dev *dev, const struct ide_port_info *d) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 192 | { |
Bartlomiej Zolnierkiewicz | 0d1bad2 | 2008-04-26 22:25:19 +0200 | [diff] [blame] | 193 | int ret, bars; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 194 | |
| 195 | if (pci_enable_device(dev)) { |
Benjamin Herrenschmidt | 0948391 | 2007-12-20 15:28:09 +1100 | [diff] [blame] | 196 | ret = pci_enable_device_io(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 197 | if (ret < 0) { |
Bartlomiej Zolnierkiewicz | 28cfd8a | 2008-07-24 22:53:31 +0200 | [diff] [blame] | 198 | printk(KERN_WARNING "%s %s: couldn't enable device\n", |
| 199 | d->name, pci_name(dev)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 200 | goto out; |
| 201 | } |
Bartlomiej Zolnierkiewicz | 28cfd8a | 2008-07-24 22:53:31 +0200 | [diff] [blame] | 202 | printk(KERN_WARNING "%s %s: BIOS configuration fixed\n", |
| 203 | d->name, pci_name(dev)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 204 | } |
| 205 | |
| 206 | /* |
Bartlomiej Zolnierkiewicz | 039788e | 2007-10-20 00:32:34 +0200 | [diff] [blame] | 207 | * assume all devices can do 32-bit DMA for now, we can add |
| 208 | * a DMA mask field to the struct ide_port_info if we need it |
| 209 | * (or let lower level driver set the DMA mask) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 210 | */ |
Yang Hongyang | 284901a | 2009-04-06 19:01:15 -0700 | [diff] [blame] | 211 | ret = pci_set_dma_mask(dev, DMA_BIT_MASK(32)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 212 | if (ret < 0) { |
Bartlomiej Zolnierkiewicz | 28cfd8a | 2008-07-24 22:53:31 +0200 | [diff] [blame] | 213 | printk(KERN_ERR "%s %s: can't set DMA mask\n", |
| 214 | d->name, pci_name(dev)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 215 | goto out; |
| 216 | } |
| 217 | |
Bartlomiej Zolnierkiewicz | 0d1bad2 | 2008-04-26 22:25:19 +0200 | [diff] [blame] | 218 | if (d->host_flags & IDE_HFLAG_SINGLE) |
| 219 | bars = (1 << 2) - 1; |
| 220 | else |
| 221 | bars = (1 << 4) - 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 222 | |
Bartlomiej Zolnierkiewicz | 0d1bad2 | 2008-04-26 22:25:19 +0200 | [diff] [blame] | 223 | if ((d->host_flags & IDE_HFLAG_NO_DMA) == 0) { |
| 224 | if (d->host_flags & IDE_HFLAG_CS5520) |
| 225 | bars |= (1 << 2); |
| 226 | else |
| 227 | bars |= (1 << 4); |
| 228 | } |
| 229 | |
| 230 | ret = pci_request_selected_regions(dev, bars, d->name); |
| 231 | if (ret < 0) |
Bartlomiej Zolnierkiewicz | 28cfd8a | 2008-07-24 22:53:31 +0200 | [diff] [blame] | 232 | printk(KERN_ERR "%s %s: can't reserve resources\n", |
| 233 | d->name, pci_name(dev)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 234 | out: |
| 235 | return ret; |
| 236 | } |
| 237 | |
| 238 | /** |
| 239 | * ide_pci_configure - configure an unconfigured device |
| 240 | * @dev: PCI device |
Bartlomiej Zolnierkiewicz | 039788e | 2007-10-20 00:32:34 +0200 | [diff] [blame] | 241 | * @d: IDE port info |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 242 | * |
| 243 | * Enable and configure the PCI device we have been passed. |
| 244 | * Returns zero on success or an error code. |
| 245 | */ |
Bartlomiej Zolnierkiewicz | 039788e | 2007-10-20 00:32:34 +0200 | [diff] [blame] | 246 | |
Bartlomiej Zolnierkiewicz | 8562043 | 2007-10-20 00:32:34 +0200 | [diff] [blame] | 247 | static int ide_pci_configure(struct pci_dev *dev, const struct ide_port_info *d) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 248 | { |
| 249 | u16 pcicmd = 0; |
| 250 | /* |
| 251 | * PnP BIOS was *supposed* to have setup this device, but we |
| 252 | * can do it ourselves, so long as the BIOS has assigned an IRQ |
| 253 | * (or possibly the device is using a "legacy header" for IRQs). |
| 254 | * Maybe the user deliberately *disabled* the device, |
| 255 | * but we'll eventually ignore it again if no drives respond. |
| 256 | */ |
Paolo Ciarrocchi | 846bb88 | 2008-04-26 17:36:39 +0200 | [diff] [blame] | 257 | if (ide_setup_pci_baseregs(dev, d->name) || |
| 258 | pci_write_config_word(dev, PCI_COMMAND, pcicmd | PCI_COMMAND_IO)) { |
Bartlomiej Zolnierkiewicz | 28cfd8a | 2008-07-24 22:53:31 +0200 | [diff] [blame] | 259 | printk(KERN_INFO "%s %s: device disabled (BIOS)\n", |
| 260 | d->name, pci_name(dev)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 261 | return -ENODEV; |
| 262 | } |
| 263 | if (pci_read_config_word(dev, PCI_COMMAND, &pcicmd)) { |
Bartlomiej Zolnierkiewicz | 28cfd8a | 2008-07-24 22:53:31 +0200 | [diff] [blame] | 264 | printk(KERN_ERR "%s %s: error accessing PCI regs\n", |
| 265 | d->name, pci_name(dev)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 266 | return -EIO; |
| 267 | } |
| 268 | if (!(pcicmd & PCI_COMMAND_IO)) { |
Bartlomiej Zolnierkiewicz | 28cfd8a | 2008-07-24 22:53:31 +0200 | [diff] [blame] | 269 | printk(KERN_ERR "%s %s: unable to enable IDE controller\n", |
| 270 | d->name, pci_name(dev)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 271 | return -ENXIO; |
| 272 | } |
| 273 | return 0; |
| 274 | } |
| 275 | |
| 276 | /** |
| 277 | * ide_pci_check_iomem - check a register is I/O |
Bartlomiej Zolnierkiewicz | 039788e | 2007-10-20 00:32:34 +0200 | [diff] [blame] | 278 | * @dev: PCI device |
| 279 | * @d: IDE port info |
| 280 | * @bar: BAR number |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 281 | * |
Sergei Shtylyov | 1baccff | 2008-04-26 17:36:31 +0200 | [diff] [blame] | 282 | * Checks if a BAR is configured and points to MMIO space. If so, |
| 283 | * return an error code. Otherwise return 0 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 284 | */ |
Bartlomiej Zolnierkiewicz | 039788e | 2007-10-20 00:32:34 +0200 | [diff] [blame] | 285 | |
Sergei Shtylyov | 1baccff | 2008-04-26 17:36:31 +0200 | [diff] [blame] | 286 | static int ide_pci_check_iomem(struct pci_dev *dev, const struct ide_port_info *d, |
| 287 | int bar) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 288 | { |
| 289 | ulong flags = pci_resource_flags(dev, bar); |
Paolo Ciarrocchi | 846bb88 | 2008-04-26 17:36:39 +0200 | [diff] [blame] | 290 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 291 | /* Unconfigured ? */ |
| 292 | if (!flags || pci_resource_len(dev, bar) == 0) |
| 293 | return 0; |
| 294 | |
Sergei Shtylyov | 1baccff | 2008-04-26 17:36:31 +0200 | [diff] [blame] | 295 | /* I/O space */ |
| 296 | if (flags & IORESOURCE_IO) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 297 | return 0; |
Paolo Ciarrocchi | 846bb88 | 2008-04-26 17:36:39 +0200 | [diff] [blame] | 298 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 299 | /* Bad */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 300 | return -EINVAL; |
| 301 | } |
| 302 | |
| 303 | /** |
Bartlomiej Zolnierkiewicz | 9f36d31 | 2009-05-17 19:12:25 +0200 | [diff] [blame] | 304 | * ide_hw_configure - configure a struct ide_hw instance |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 305 | * @dev: PCI device holding interface |
Bartlomiej Zolnierkiewicz | 039788e | 2007-10-20 00:32:34 +0200 | [diff] [blame] | 306 | * @d: IDE port info |
Bartlomiej Zolnierkiewicz | 1ebf749 | 2008-02-02 19:56:30 +0100 | [diff] [blame] | 307 | * @port: port number |
Bartlomiej Zolnierkiewicz | 9f36d31 | 2009-05-17 19:12:25 +0200 | [diff] [blame] | 308 | * @hw: struct ide_hw instance corresponding to this port |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 309 | * |
| 310 | * Perform the initial set up for the hardware interface structure. This |
| 311 | * is done per interface port rather than per PCI device. There may be |
| 312 | * more than one port per device. |
| 313 | * |
Bartlomiej Zolnierkiewicz | 48c3c10 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 314 | * Returns zero on success or an error code. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 315 | */ |
Bartlomiej Zolnierkiewicz | 039788e | 2007-10-20 00:32:34 +0200 | [diff] [blame] | 316 | |
Bartlomiej Zolnierkiewicz | 48c3c10 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 317 | static int ide_hw_configure(struct pci_dev *dev, const struct ide_port_info *d, |
Bartlomiej Zolnierkiewicz | 9f36d31 | 2009-05-17 19:12:25 +0200 | [diff] [blame] | 318 | unsigned int port, struct ide_hw *hw) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 319 | { |
| 320 | unsigned long ctl = 0, base = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 321 | |
Bartlomiej Zolnierkiewicz | a5d8c5c | 2007-07-20 01:11:55 +0200 | [diff] [blame] | 322 | if ((d->host_flags & IDE_HFLAG_ISA_PORTS) == 0) { |
Sergei Shtylyov | 1baccff | 2008-04-26 17:36:31 +0200 | [diff] [blame] | 323 | if (ide_pci_check_iomem(dev, d, 2 * port) || |
| 324 | ide_pci_check_iomem(dev, d, 2 * port + 1)) { |
Bartlomiej Zolnierkiewicz | 28cfd8a | 2008-07-24 22:53:31 +0200 | [diff] [blame] | 325 | printk(KERN_ERR "%s %s: I/O baseregs (BIOS) are " |
| 326 | "reported as MEM for port %d!\n", |
| 327 | d->name, pci_name(dev), port); |
Bartlomiej Zolnierkiewicz | 48c3c10 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 328 | return -EINVAL; |
Sergei Shtylyov | 1baccff | 2008-04-26 17:36:31 +0200 | [diff] [blame] | 329 | } |
Paolo Ciarrocchi | 846bb88 | 2008-04-26 17:36:39 +0200 | [diff] [blame] | 330 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 331 | ctl = pci_resource_start(dev, 2*port+1); |
| 332 | base = pci_resource_start(dev, 2*port); |
Bartlomiej Zolnierkiewicz | c1da678 | 2008-07-16 20:33:41 +0200 | [diff] [blame] | 333 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 334 | /* Use default values */ |
| 335 | ctl = port ? 0x374 : 0x3f4; |
| 336 | base = port ? 0x170 : 0x1f0; |
| 337 | } |
Bartlomiej Zolnierkiewicz | bad7c82 | 2008-04-26 17:36:31 +0200 | [diff] [blame] | 338 | |
Bartlomiej Zolnierkiewicz | c1da678 | 2008-07-16 20:33:41 +0200 | [diff] [blame] | 339 | if (!base || !ctl) { |
Bartlomiej Zolnierkiewicz | 28cfd8a | 2008-07-24 22:53:31 +0200 | [diff] [blame] | 340 | printk(KERN_ERR "%s %s: bad PCI BARs for port %d, skipping\n", |
| 341 | d->name, pci_name(dev), port); |
Bartlomiej Zolnierkiewicz | 48c3c10 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 342 | return -EINVAL; |
Bartlomiej Zolnierkiewicz | c1da678 | 2008-07-16 20:33:41 +0200 | [diff] [blame] | 343 | } |
| 344 | |
Bartlomiej Zolnierkiewicz | c97c6ac | 2008-07-23 19:55:50 +0200 | [diff] [blame] | 345 | memset(hw, 0, sizeof(*hw)); |
Bartlomiej Zolnierkiewicz | c97c6ac | 2008-07-23 19:55:50 +0200 | [diff] [blame] | 346 | hw->dev = &dev->dev; |
Bartlomiej Zolnierkiewicz | c97c6ac | 2008-07-23 19:55:50 +0200 | [diff] [blame] | 347 | ide_std_init_ports(hw, base, ctl | 2); |
| 348 | |
Bartlomiej Zolnierkiewicz | 48c3c10 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 349 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 350 | } |
| 351 | |
Bartlomiej Zolnierkiewicz | c413b9b | 2008-02-02 19:56:31 +0100 | [diff] [blame] | 352 | #ifdef CONFIG_BLK_DEV_IDEDMA_PCI |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 353 | /** |
| 354 | * ide_hwif_setup_dma - configure DMA interface |
Bartlomiej Zolnierkiewicz | 039788e | 2007-10-20 00:32:34 +0200 | [diff] [blame] | 355 | * @hwif: IDE interface |
Bartlomiej Zolnierkiewicz | c413b9b | 2008-02-02 19:56:31 +0100 | [diff] [blame] | 356 | * @d: IDE port info |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 357 | * |
| 358 | * Set up the DMA base for the interface. Enable the master bits as |
| 359 | * necessary and attempt to bring the device DMA into a ready to use |
| 360 | * state |
| 361 | */ |
Bartlomiej Zolnierkiewicz | 039788e | 2007-10-20 00:32:34 +0200 | [diff] [blame] | 362 | |
Bartlomiej Zolnierkiewicz | b123f56 | 2008-04-26 22:25:22 +0200 | [diff] [blame] | 363 | int ide_hwif_setup_dma(ide_hwif_t *hwif, const struct ide_port_info *d) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 364 | { |
Bartlomiej Zolnierkiewicz | c413b9b | 2008-02-02 19:56:31 +0100 | [diff] [blame] | 365 | struct pci_dev *dev = to_pci_dev(hwif->dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 366 | |
Bartlomiej Zolnierkiewicz | 47b6878 | 2007-10-19 00:30:06 +0200 | [diff] [blame] | 367 | if ((d->host_flags & IDE_HFLAG_NO_AUTODMA) == 0 || |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 368 | ((dev->class >> 8) == PCI_CLASS_STORAGE_IDE && |
| 369 | (dev->class & 0x80))) { |
Bartlomiej Zolnierkiewicz | b123f56 | 2008-04-26 22:25:22 +0200 | [diff] [blame] | 370 | unsigned long base = ide_pci_dma_base(hwif, d); |
Bartlomiej Zolnierkiewicz | 23658f8 | 2008-04-26 22:25:21 +0200 | [diff] [blame] | 371 | |
Bartlomiej Zolnierkiewicz | ebb00fb | 2008-07-23 19:55:51 +0200 | [diff] [blame] | 372 | if (base == 0) |
| 373 | return -1; |
| 374 | |
| 375 | hwif->dma_base = base; |
| 376 | |
Sergei Shtylyov | 592b531 | 2009-01-06 17:21:02 +0100 | [diff] [blame] | 377 | if (hwif->dma_ops == NULL) |
| 378 | hwif->dma_ops = &sff_dma_ops; |
| 379 | |
Bartlomiej Zolnierkiewicz | ebb00fb | 2008-07-23 19:55:51 +0200 | [diff] [blame] | 380 | if (ide_pci_check_simplex(hwif, d) < 0) |
| 381 | return -1; |
| 382 | |
| 383 | if (ide_pci_set_master(dev, d->name) < 0) |
Bartlomiej Zolnierkiewicz | b123f56 | 2008-04-26 22:25:22 +0200 | [diff] [blame] | 384 | return -1; |
Bartlomiej Zolnierkiewicz | d54452f | 2008-04-26 22:25:21 +0200 | [diff] [blame] | 385 | |
Bartlomiej Zolnierkiewicz | 1357214 | 2008-07-15 21:21:49 +0200 | [diff] [blame] | 386 | if (hwif->host_flags & IDE_HFLAG_MMIO) |
Bartlomiej Zolnierkiewicz | 63158d5 | 2008-04-26 22:25:21 +0200 | [diff] [blame] | 387 | printk(KERN_INFO " %s: MMIO-DMA\n", hwif->name); |
| 388 | else |
| 389 | printk(KERN_INFO " %s: BM-DMA at 0x%04lx-0x%04lx\n", |
| 390 | hwif->name, base, base + 7); |
| 391 | |
| 392 | hwif->extra_base = base + (hwif->channel ? 8 : 16); |
| 393 | |
Bartlomiej Zolnierkiewicz | b123f56 | 2008-04-26 22:25:22 +0200 | [diff] [blame] | 394 | if (ide_allocate_dma_engine(hwif)) |
| 395 | return -1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 396 | } |
Bartlomiej Zolnierkiewicz | d54452f | 2008-04-26 22:25:21 +0200 | [diff] [blame] | 397 | |
Bartlomiej Zolnierkiewicz | b123f56 | 2008-04-26 22:25:22 +0200 | [diff] [blame] | 398 | return 0; |
Bartlomiej Zolnierkiewicz | 039788e | 2007-10-20 00:32:34 +0200 | [diff] [blame] | 399 | } |
Bartlomiej Zolnierkiewicz | c413b9b | 2008-02-02 19:56:31 +0100 | [diff] [blame] | 400 | #endif /* CONFIG_BLK_DEV_IDEDMA_PCI */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 401 | |
| 402 | /** |
| 403 | * ide_setup_pci_controller - set up IDE PCI |
| 404 | * @dev: PCI device |
Bartlomiej Zolnierkiewicz | 039788e | 2007-10-20 00:32:34 +0200 | [diff] [blame] | 405 | * @d: IDE port info |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 406 | * @noisy: verbose flag |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 407 | * |
| 408 | * Set up the PCI and controller side of the IDE interface. This brings |
| 409 | * up the PCI side of the device, checks that the device is enabled |
| 410 | * and enables it if need be |
| 411 | */ |
Bartlomiej Zolnierkiewicz | 039788e | 2007-10-20 00:32:34 +0200 | [diff] [blame] | 412 | |
Bartlomiej Zolnierkiewicz | a95925a | 2008-07-24 22:53:11 +0200 | [diff] [blame] | 413 | static int ide_setup_pci_controller(struct pci_dev *dev, |
| 414 | const struct ide_port_info *d, int noisy) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 415 | { |
| 416 | int ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 417 | u16 pcicmd; |
| 418 | |
| 419 | if (noisy) |
| 420 | ide_setup_pci_noise(dev, d); |
| 421 | |
| 422 | ret = ide_pci_enable(dev, d); |
| 423 | if (ret < 0) |
| 424 | goto out; |
| 425 | |
| 426 | ret = pci_read_config_word(dev, PCI_COMMAND, &pcicmd); |
| 427 | if (ret < 0) { |
Bartlomiej Zolnierkiewicz | 28cfd8a | 2008-07-24 22:53:31 +0200 | [diff] [blame] | 428 | printk(KERN_ERR "%s %s: error accessing PCI regs\n", |
| 429 | d->name, pci_name(dev)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 430 | goto out; |
| 431 | } |
| 432 | if (!(pcicmd & PCI_COMMAND_IO)) { /* is device disabled? */ |
| 433 | ret = ide_pci_configure(dev, d); |
| 434 | if (ret < 0) |
| 435 | goto out; |
Bartlomiej Zolnierkiewicz | 28cfd8a | 2008-07-24 22:53:31 +0200 | [diff] [blame] | 436 | printk(KERN_INFO "%s %s: device enabled (Linux)\n", |
| 437 | d->name, pci_name(dev)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 438 | } |
| 439 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 440 | out: |
| 441 | return ret; |
| 442 | } |
| 443 | |
| 444 | /** |
| 445 | * ide_pci_setup_ports - configure ports/devices on PCI IDE |
| 446 | * @dev: PCI device |
Bartlomiej Zolnierkiewicz | 039788e | 2007-10-20 00:32:34 +0200 | [diff] [blame] | 447 | * @d: IDE port info |
Bartlomiej Zolnierkiewicz | 9f36d31 | 2009-05-17 19:12:25 +0200 | [diff] [blame] | 448 | * @hw: struct ide_hw instances corresponding to this PCI IDE device |
| 449 | * @hws: struct ide_hw pointers table to update |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 450 | * |
| 451 | * Scan the interfaces attached to this device and do any |
| 452 | * necessary per port setup. Attach the devices and ask the |
| 453 | * generic DMA layer to do its work for us. |
| 454 | * |
| 455 | * Normally called automaticall from do_ide_pci_setup_device, |
| 456 | * but is also used directly as a helper function by some controllers |
| 457 | * where the chipset setup is not the default PCI IDE one. |
| 458 | */ |
Bartlomiej Zolnierkiewicz | 8447d9d | 2007-10-20 00:32:31 +0200 | [diff] [blame] | 459 | |
Bartlomiej Zolnierkiewicz | c97c6ac | 2008-07-23 19:55:50 +0200 | [diff] [blame] | 460 | void ide_pci_setup_ports(struct pci_dev *dev, const struct ide_port_info *d, |
Bartlomiej Zolnierkiewicz | 9f36d31 | 2009-05-17 19:12:25 +0200 | [diff] [blame] | 461 | struct ide_hw *hw, struct ide_hw **hws) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 462 | { |
Bartlomiej Zolnierkiewicz | a5d8c5c | 2007-07-20 01:11:55 +0200 | [diff] [blame] | 463 | int channels = (d->host_flags & IDE_HFLAG_SINGLE) ? 1 : 2, port; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 464 | u8 tmp; |
| 465 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 466 | /* |
| 467 | * Set up the IDE ports |
| 468 | */ |
Bartlomiej Zolnierkiewicz | cf6e854 | 2007-10-20 00:32:29 +0200 | [diff] [blame] | 469 | |
Bartlomiej Zolnierkiewicz | a5d8c5c | 2007-07-20 01:11:55 +0200 | [diff] [blame] | 470 | for (port = 0; port < channels; ++port) { |
Bartlomiej Zolnierkiewicz | c0ae502 | 2009-01-06 17:20:52 +0100 | [diff] [blame] | 471 | const struct ide_pci_enablebit *e = &d->enablebits[port]; |
Bartlomiej Zolnierkiewicz | 8562043 | 2007-10-20 00:32:34 +0200 | [diff] [blame] | 472 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 473 | if (e->reg && (pci_read_config_byte(dev, e->reg, &tmp) || |
Bartlomiej Zolnierkiewicz | cf6e854 | 2007-10-20 00:32:29 +0200 | [diff] [blame] | 474 | (tmp & e->mask) != e->val)) { |
Bartlomiej Zolnierkiewicz | 28cfd8a | 2008-07-24 22:53:31 +0200 | [diff] [blame] | 475 | printk(KERN_INFO "%s %s: IDE port disabled\n", |
| 476 | d->name, pci_name(dev)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 477 | continue; /* port not enabled */ |
Bartlomiej Zolnierkiewicz | cf6e854 | 2007-10-20 00:32:29 +0200 | [diff] [blame] | 478 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 479 | |
Bartlomiej Zolnierkiewicz | 86ccf37 | 2009-03-24 23:22:53 +0100 | [diff] [blame] | 480 | if (ide_hw_configure(dev, d, port, hw + port)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 481 | continue; |
| 482 | |
Bartlomiej Zolnierkiewicz | c97c6ac | 2008-07-23 19:55:50 +0200 | [diff] [blame] | 483 | *(hws + port) = hw + port; |
Bartlomiej Zolnierkiewicz | 1ebf749 | 2008-02-02 19:56:30 +0100 | [diff] [blame] | 484 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 485 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 486 | EXPORT_SYMBOL_GPL(ide_pci_setup_ports); |
| 487 | |
| 488 | /* |
| 489 | * ide_setup_pci_device() looks at the primary/secondary interfaces |
| 490 | * on a PCI IDE device and, if they are enabled, prepares the IDE driver |
| 491 | * for use with them. This generic code works for most PCI chipsets. |
| 492 | * |
| 493 | * One thing that is not standardized is the location of the |
| 494 | * primary/secondary interface "enable/disable" bits. For chipsets that |
Bartlomiej Zolnierkiewicz | 039788e | 2007-10-20 00:32:34 +0200 | [diff] [blame] | 495 | * we "know" about, this information is in the struct ide_port_info; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 496 | * for all other chipsets, we just assume both interfaces are enabled. |
| 497 | */ |
Bartlomiej Zolnierkiewicz | 039788e | 2007-10-20 00:32:34 +0200 | [diff] [blame] | 498 | static int do_ide_setup_pci_device(struct pci_dev *dev, |
Bartlomiej Zolnierkiewicz | 8562043 | 2007-10-20 00:32:34 +0200 | [diff] [blame] | 499 | const struct ide_port_info *d, |
Bartlomiej Zolnierkiewicz | 51d87ed | 2008-07-23 19:55:49 +0200 | [diff] [blame] | 500 | u8 noisy) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 501 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 502 | int pciirq, ret; |
| 503 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 504 | /* |
| 505 | * Can we trust the reported IRQ? |
| 506 | */ |
| 507 | pciirq = dev->irq; |
| 508 | |
Bartlomiej Zolnierkiewicz | 708e5f9 | 2008-07-24 22:53:11 +0200 | [diff] [blame] | 509 | /* |
| 510 | * This allows offboard ide-pci cards the enable a BIOS, |
| 511 | * verify interrupt settings of split-mirror pci-config |
| 512 | * space, place chipset into init-mode, and/or preserve |
| 513 | * an interrupt if the card is not native ide support. |
| 514 | */ |
Bartlomiej Zolnierkiewicz | a326b02 | 2008-07-24 22:53:33 +0200 | [diff] [blame] | 515 | ret = d->init_chipset ? d->init_chipset(dev) : 0; |
Bartlomiej Zolnierkiewicz | 708e5f9 | 2008-07-24 22:53:11 +0200 | [diff] [blame] | 516 | if (ret < 0) |
| 517 | goto out; |
| 518 | |
Bartlomiej Zolnierkiewicz | 8c6de94 | 2009-01-06 17:20:58 +0100 | [diff] [blame] | 519 | if (ide_pci_is_in_compatibility_mode(dev)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 520 | if (noisy) |
Bartlomiej Zolnierkiewicz | 28cfd8a | 2008-07-24 22:53:31 +0200 | [diff] [blame] | 521 | printk(KERN_INFO "%s %s: not 100%% native mode: will " |
| 522 | "probe irqs later\n", d->name, pci_name(dev)); |
Bartlomiej Zolnierkiewicz | 2ed0ef5 | 2009-03-24 23:22:53 +0100 | [diff] [blame] | 523 | pciirq = 0; |
Bartlomiej Zolnierkiewicz | 28cfd8a | 2008-07-24 22:53:31 +0200 | [diff] [blame] | 524 | } else if (!pciirq && noisy) { |
| 525 | printk(KERN_WARNING "%s %s: bad irq (%d): will probe later\n", |
| 526 | d->name, pci_name(dev), pciirq); |
| 527 | } else if (noisy) { |
| 528 | printk(KERN_INFO "%s %s: 100%% native mode on irq %d\n", |
| 529 | d->name, pci_name(dev), pciirq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 530 | } |
| 531 | |
Bartlomiej Zolnierkiewicz | 51d87ed | 2008-07-23 19:55:49 +0200 | [diff] [blame] | 532 | ret = pciirq; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 533 | out: |
| 534 | return ret; |
| 535 | } |
| 536 | |
Bartlomiej Zolnierkiewicz | 6cdf6eb | 2008-07-24 22:53:14 +0200 | [diff] [blame] | 537 | int ide_pci_init_one(struct pci_dev *dev, const struct ide_port_info *d, |
| 538 | void *priv) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 539 | { |
Bartlomiej Zolnierkiewicz | 6cdf6eb | 2008-07-24 22:53:14 +0200 | [diff] [blame] | 540 | struct ide_host *host; |
Bartlomiej Zolnierkiewicz | 9f36d31 | 2009-05-17 19:12:25 +0200 | [diff] [blame] | 541 | struct ide_hw hw[2], *hws[] = { NULL, NULL }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 542 | int ret; |
| 543 | |
Bartlomiej Zolnierkiewicz | a742d6c | 2008-07-24 22:53:12 +0200 | [diff] [blame] | 544 | ret = ide_setup_pci_controller(dev, d, 1); |
| 545 | if (ret < 0) |
| 546 | goto out; |
| 547 | |
Bartlomiej Zolnierkiewicz | 86ccf37 | 2009-03-24 23:22:53 +0100 | [diff] [blame] | 548 | ide_pci_setup_ports(dev, d, &hw[0], &hws[0]); |
Bartlomiej Zolnierkiewicz | 8c2eece | 2008-07-24 22:53:12 +0200 | [diff] [blame] | 549 | |
Bartlomiej Zolnierkiewicz | dca3983 | 2009-05-17 19:12:24 +0200 | [diff] [blame] | 550 | host = ide_host_alloc(d, hws, 2); |
Bartlomiej Zolnierkiewicz | 6cdf6eb | 2008-07-24 22:53:14 +0200 | [diff] [blame] | 551 | if (host == NULL) { |
| 552 | ret = -ENOMEM; |
| 553 | goto out; |
| 554 | } |
| 555 | |
| 556 | host->dev[0] = &dev->dev; |
| 557 | |
| 558 | host->host_priv = priv; |
| 559 | |
Bartlomiej Zolnierkiewicz | 255115fb | 2009-03-27 12:46:27 +0100 | [diff] [blame] | 560 | host->irq_flags = IRQF_SHARED; |
| 561 | |
Bartlomiej Zolnierkiewicz | ef0b042 | 2008-07-24 22:53:19 +0200 | [diff] [blame] | 562 | pci_set_drvdata(dev, host); |
Bartlomiej Zolnierkiewicz | 6cdf6eb | 2008-07-24 22:53:14 +0200 | [diff] [blame] | 563 | |
Bartlomiej Zolnierkiewicz | 51d87ed | 2008-07-23 19:55:49 +0200 | [diff] [blame] | 564 | ret = do_ide_setup_pci_device(dev, d, 1); |
Bartlomiej Zolnierkiewicz | 8c2eece | 2008-07-24 22:53:12 +0200 | [diff] [blame] | 565 | if (ret < 0) |
| 566 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 567 | |
Bartlomiej Zolnierkiewicz | 8c2eece | 2008-07-24 22:53:12 +0200 | [diff] [blame] | 568 | /* fixup IRQ */ |
Bartlomiej Zolnierkiewicz | f65dedf | 2009-03-24 23:22:51 +0100 | [diff] [blame] | 569 | if (ide_pci_is_in_compatibility_mode(dev)) { |
Bartlomiej Zolnierkiewicz | 5bae8bf | 2009-03-24 23:22:49 +0100 | [diff] [blame] | 570 | hw[0].irq = pci_get_legacy_ide_irq(dev, 0); |
| 571 | hw[1].irq = pci_get_legacy_ide_irq(dev, 1); |
Bartlomiej Zolnierkiewicz | f65dedf | 2009-03-24 23:22:51 +0100 | [diff] [blame] | 572 | } else |
| 573 | hw[1].irq = hw[0].irq = ret; |
Bartlomiej Zolnierkiewicz | 80d15a6 | 2009-03-24 23:22:49 +0100 | [diff] [blame] | 574 | |
Bartlomiej Zolnierkiewicz | 6cdf6eb | 2008-07-24 22:53:14 +0200 | [diff] [blame] | 575 | ret = ide_host_register(host, d, hws); |
| 576 | if (ret) |
| 577 | ide_host_free(host); |
Bartlomiej Zolnierkiewicz | a742d6c | 2008-07-24 22:53:12 +0200 | [diff] [blame] | 578 | out: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 579 | return ret; |
| 580 | } |
Bartlomiej Zolnierkiewicz | 6cdf6eb | 2008-07-24 22:53:14 +0200 | [diff] [blame] | 581 | EXPORT_SYMBOL_GPL(ide_pci_init_one); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 582 | |
Bartlomiej Zolnierkiewicz | 6cdf6eb | 2008-07-24 22:53:14 +0200 | [diff] [blame] | 583 | int ide_pci_init_two(struct pci_dev *dev1, struct pci_dev *dev2, |
| 584 | const struct ide_port_info *d, void *priv) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 585 | { |
| 586 | struct pci_dev *pdev[] = { dev1, dev2 }; |
Bartlomiej Zolnierkiewicz | 6cdf6eb | 2008-07-24 22:53:14 +0200 | [diff] [blame] | 587 | struct ide_host *host; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 588 | int ret, i; |
Bartlomiej Zolnierkiewicz | 9f36d31 | 2009-05-17 19:12:25 +0200 | [diff] [blame] | 589 | struct ide_hw hw[4], *hws[] = { NULL, NULL, NULL, NULL }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 590 | |
| 591 | for (i = 0; i < 2; i++) { |
Bartlomiej Zolnierkiewicz | a742d6c | 2008-07-24 22:53:12 +0200 | [diff] [blame] | 592 | ret = ide_setup_pci_controller(pdev[i], d, !i); |
| 593 | if (ret < 0) |
| 594 | goto out; |
| 595 | |
Bartlomiej Zolnierkiewicz | 86ccf37 | 2009-03-24 23:22:53 +0100 | [diff] [blame] | 596 | ide_pci_setup_ports(pdev[i], d, &hw[i*2], &hws[i*2]); |
Bartlomiej Zolnierkiewicz | 6cdf6eb | 2008-07-24 22:53:14 +0200 | [diff] [blame] | 597 | } |
Bartlomiej Zolnierkiewicz | 8c2eece | 2008-07-24 22:53:12 +0200 | [diff] [blame] | 598 | |
Bartlomiej Zolnierkiewicz | dca3983 | 2009-05-17 19:12:24 +0200 | [diff] [blame] | 599 | host = ide_host_alloc(d, hws, 4); |
Bartlomiej Zolnierkiewicz | 6cdf6eb | 2008-07-24 22:53:14 +0200 | [diff] [blame] | 600 | if (host == NULL) { |
| 601 | ret = -ENOMEM; |
| 602 | goto out; |
| 603 | } |
| 604 | |
| 605 | host->dev[0] = &dev1->dev; |
| 606 | host->dev[1] = &dev2->dev; |
| 607 | |
| 608 | host->host_priv = priv; |
| 609 | |
Bartlomiej Zolnierkiewicz | 255115fb | 2009-03-27 12:46:27 +0100 | [diff] [blame] | 610 | host->irq_flags = IRQF_SHARED; |
| 611 | |
Bartlomiej Zolnierkiewicz | ef0b042 | 2008-07-24 22:53:19 +0200 | [diff] [blame] | 612 | pci_set_drvdata(pdev[0], host); |
| 613 | pci_set_drvdata(pdev[1], host); |
Bartlomiej Zolnierkiewicz | 6cdf6eb | 2008-07-24 22:53:14 +0200 | [diff] [blame] | 614 | |
| 615 | for (i = 0; i < 2; i++) { |
Bartlomiej Zolnierkiewicz | 51d87ed | 2008-07-23 19:55:49 +0200 | [diff] [blame] | 616 | ret = do_ide_setup_pci_device(pdev[i], d, !i); |
| 617 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 618 | /* |
| 619 | * FIXME: Mom, mom, they stole me the helper function to undo |
| 620 | * do_ide_setup_pci_device() on the first device! |
| 621 | */ |
| 622 | if (ret < 0) |
| 623 | goto out; |
Bartlomiej Zolnierkiewicz | 51d87ed | 2008-07-23 19:55:49 +0200 | [diff] [blame] | 624 | |
Bartlomiej Zolnierkiewicz | 8c2eece | 2008-07-24 22:53:12 +0200 | [diff] [blame] | 625 | /* fixup IRQ */ |
Bartlomiej Zolnierkiewicz | f65dedf | 2009-03-24 23:22:51 +0100 | [diff] [blame] | 626 | if (ide_pci_is_in_compatibility_mode(pdev[i])) { |
Bartlomiej Zolnierkiewicz | 5bae8bf | 2009-03-24 23:22:49 +0100 | [diff] [blame] | 627 | hw[i*2].irq = pci_get_legacy_ide_irq(pdev[i], 0); |
| 628 | hw[i*2 + 1].irq = pci_get_legacy_ide_irq(pdev[i], 1); |
Bartlomiej Zolnierkiewicz | f65dedf | 2009-03-24 23:22:51 +0100 | [diff] [blame] | 629 | } else |
| 630 | hw[i*2 + 1].irq = hw[i*2].irq = ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 631 | } |
| 632 | |
Bartlomiej Zolnierkiewicz | 6cdf6eb | 2008-07-24 22:53:14 +0200 | [diff] [blame] | 633 | ret = ide_host_register(host, d, hws); |
| 634 | if (ret) |
| 635 | ide_host_free(host); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 636 | out: |
| 637 | return ret; |
| 638 | } |
Bartlomiej Zolnierkiewicz | 6cdf6eb | 2008-07-24 22:53:14 +0200 | [diff] [blame] | 639 | EXPORT_SYMBOL_GPL(ide_pci_init_two); |
Bartlomiej Zolnierkiewicz | ef0b042 | 2008-07-24 22:53:19 +0200 | [diff] [blame] | 640 | |
| 641 | void ide_pci_remove(struct pci_dev *dev) |
| 642 | { |
| 643 | struct ide_host *host = pci_get_drvdata(dev); |
| 644 | struct pci_dev *dev2 = host->dev[1] ? to_pci_dev(host->dev[1]) : NULL; |
| 645 | int bars; |
| 646 | |
| 647 | if (host->host_flags & IDE_HFLAG_SINGLE) |
| 648 | bars = (1 << 2) - 1; |
| 649 | else |
| 650 | bars = (1 << 4) - 1; |
| 651 | |
| 652 | if ((host->host_flags & IDE_HFLAG_NO_DMA) == 0) { |
| 653 | if (host->host_flags & IDE_HFLAG_CS5520) |
| 654 | bars |= (1 << 2); |
| 655 | else |
| 656 | bars |= (1 << 4); |
| 657 | } |
| 658 | |
| 659 | ide_host_remove(host); |
| 660 | |
| 661 | if (dev2) |
| 662 | pci_release_selected_regions(dev2, bars); |
| 663 | pci_release_selected_regions(dev, bars); |
| 664 | |
| 665 | if (dev2) |
| 666 | pci_disable_device(dev2); |
| 667 | pci_disable_device(dev); |
| 668 | } |
| 669 | EXPORT_SYMBOL_GPL(ide_pci_remove); |
Bartlomiej Zolnierkiewicz | feb22b7 | 2008-10-10 22:39:32 +0200 | [diff] [blame] | 670 | |
| 671 | #ifdef CONFIG_PM |
| 672 | int ide_pci_suspend(struct pci_dev *dev, pm_message_t state) |
| 673 | { |
| 674 | pci_save_state(dev); |
| 675 | pci_disable_device(dev); |
| 676 | pci_set_power_state(dev, pci_choose_state(dev, state)); |
| 677 | |
| 678 | return 0; |
| 679 | } |
| 680 | EXPORT_SYMBOL_GPL(ide_pci_suspend); |
| 681 | |
| 682 | int ide_pci_resume(struct pci_dev *dev) |
| 683 | { |
| 684 | struct ide_host *host = pci_get_drvdata(dev); |
| 685 | int rc; |
| 686 | |
| 687 | pci_set_power_state(dev, PCI_D0); |
| 688 | |
| 689 | rc = pci_enable_device(dev); |
| 690 | if (rc) |
| 691 | return rc; |
| 692 | |
| 693 | pci_restore_state(dev); |
| 694 | pci_set_master(dev); |
| 695 | |
| 696 | if (host->init_chipset) |
| 697 | host->init_chipset(dev); |
| 698 | |
| 699 | return 0; |
| 700 | } |
| 701 | EXPORT_SYMBOL_GPL(ide_pci_resume); |
| 702 | #endif |