Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 1 | /* |
| 2 | * ata_generic.c - Generic PATA/SATA controller driver. |
| 3 | * Copyright 2005 Red Hat Inc <alan@redhat.com>, all rights reserved. |
| 4 | * |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 5 | * Elements from ide/pci/generic.c |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 6 | * Copyright (C) 2001-2002 Andre Hedrick <andre@linux-ide.org> |
| 7 | * Portions (C) Copyright 2002 Red Hat Inc <alan@redhat.com> |
| 8 | * |
| 9 | * May be copied or modified under the terms of the GNU General Public License |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 10 | * |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 11 | * Driver for PCI IDE interfaces implementing the standard bus mastering |
| 12 | * interface functionality. This assumes the BIOS did the drive set up and |
| 13 | * tuning for us. By default we do not grab all IDE class devices as they |
| 14 | * may have other drivers or need fixups to avoid problems. Instead we keep |
| 15 | * a default list of stuff without documentation/driver that appears to |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 16 | * work. |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 17 | */ |
| 18 | |
| 19 | #include <linux/kernel.h> |
| 20 | #include <linux/module.h> |
| 21 | #include <linux/pci.h> |
| 22 | #include <linux/init.h> |
| 23 | #include <linux/blkdev.h> |
| 24 | #include <linux/delay.h> |
| 25 | #include <scsi/scsi_host.h> |
| 26 | #include <linux/libata.h> |
| 27 | |
| 28 | #define DRV_NAME "ata_generic" |
Jeff Garzik | 8bc3fc4 | 2007-05-21 20:26:38 -0400 | [diff] [blame] | 29 | #define DRV_VERSION "0.2.12" |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 30 | |
| 31 | /* |
| 32 | * A generic parallel ATA driver using libata |
| 33 | */ |
| 34 | |
| 35 | /** |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 36 | * generic_set_mode - mode setting |
| 37 | * @ap: interface to set up |
Alan | b229a7b | 2007-01-24 11:47:07 +0000 | [diff] [blame] | 38 | * @unused: returned device on error |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 39 | * |
| 40 | * Use a non standard set_mode function. We don't want to be tuned. |
| 41 | * The BIOS configured everything. Our job is not to fiddle. We |
| 42 | * read the dma enabled bits from the PCI configuration of the device |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 43 | * and respect them. |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 44 | */ |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 45 | |
Alan | b229a7b | 2007-01-24 11:47:07 +0000 | [diff] [blame] | 46 | static int generic_set_mode(struct ata_port *ap, struct ata_device **unused) |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 47 | { |
| 48 | int dma_enabled = 0; |
| 49 | int i; |
| 50 | |
| 51 | /* Bits 5 and 6 indicate if DMA is active on master/slave */ |
| 52 | if (ap->ioaddr.bmdma_addr) |
Alan Cox | d6f4d5e | 2007-07-03 15:11:30 +0100 | [diff] [blame] | 53 | dma_enabled = ioread8(ap->ioaddr.bmdma_addr + ATA_DMA_STATUS); |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 54 | |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 55 | for (i = 0; i < ATA_MAX_DEVICES; i++) { |
| 56 | struct ata_device *dev = &ap->device[i]; |
Tejun Heo | 9666f40 | 2007-05-04 21:27:47 +0200 | [diff] [blame] | 57 | if (ata_dev_enabled(dev)) { |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 58 | /* We don't really care */ |
| 59 | dev->pio_mode = XFER_PIO_0; |
| 60 | dev->dma_mode = XFER_MW_DMA_0; |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 61 | /* We do need the right mode information for DMA or PIO |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 62 | and this comes from the current configuration flags */ |
| 63 | if (dma_enabled & (1 << (5 + i))) { |
Alan | 616ece2 | 2007-02-20 18:15:03 +0000 | [diff] [blame] | 64 | ata_id_to_dma_mode(dev, XFER_MW_DMA_0); |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 65 | dev->flags &= ~ATA_DFLAG_PIO; |
| 66 | } else { |
Alan | 616ece2 | 2007-02-20 18:15:03 +0000 | [diff] [blame] | 67 | ata_dev_printk(dev, KERN_INFO, "configured for PIO\n"); |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 68 | dev->xfer_mode = XFER_PIO_0; |
| 69 | dev->xfer_shift = ATA_SHIFT_PIO; |
| 70 | dev->flags |= ATA_DFLAG_PIO; |
| 71 | } |
| 72 | } |
| 73 | } |
Alan | b229a7b | 2007-01-24 11:47:07 +0000 | [diff] [blame] | 74 | return 0; |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 75 | } |
| 76 | |
| 77 | static struct scsi_host_template generic_sht = { |
| 78 | .module = THIS_MODULE, |
| 79 | .name = DRV_NAME, |
| 80 | .ioctl = ata_scsi_ioctl, |
| 81 | .queuecommand = ata_scsi_queuecmd, |
| 82 | .can_queue = ATA_DEF_QUEUE, |
| 83 | .this_id = ATA_SHT_THIS_ID, |
| 84 | .sg_tablesize = LIBATA_MAX_PRD, |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 85 | .cmd_per_lun = ATA_SHT_CMD_PER_LUN, |
| 86 | .emulated = ATA_SHT_EMULATED, |
| 87 | .use_clustering = ATA_SHT_USE_CLUSTERING, |
| 88 | .proc_name = DRV_NAME, |
| 89 | .dma_boundary = ATA_DMA_BOUNDARY, |
| 90 | .slave_configure = ata_scsi_slave_config, |
Tejun Heo | afdfe89 | 2006-11-29 11:26:47 +0900 | [diff] [blame] | 91 | .slave_destroy = ata_scsi_slave_destroy, |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 92 | .bios_param = ata_std_bios_param, |
| 93 | }; |
| 94 | |
| 95 | static struct ata_port_operations generic_port_ops = { |
| 96 | .set_mode = generic_set_mode, |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 97 | |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 98 | .port_disable = ata_port_disable, |
| 99 | .tf_load = ata_tf_load, |
| 100 | .tf_read = ata_tf_read, |
| 101 | .check_status = ata_check_status, |
| 102 | .exec_command = ata_exec_command, |
| 103 | .dev_select = ata_std_dev_select, |
| 104 | |
| 105 | .bmdma_setup = ata_bmdma_setup, |
| 106 | .bmdma_start = ata_bmdma_start, |
| 107 | .bmdma_stop = ata_bmdma_stop, |
| 108 | .bmdma_status = ata_bmdma_status, |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 109 | |
Tejun Heo | 0d5ff56 | 2007-02-01 15:06:36 +0900 | [diff] [blame] | 110 | .data_xfer = ata_data_xfer, |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 111 | |
| 112 | .freeze = ata_bmdma_freeze, |
| 113 | .thaw = ata_bmdma_thaw, |
Alan Cox | eb4a2c7 | 2007-04-11 00:04:20 +0100 | [diff] [blame] | 114 | .error_handler = ata_bmdma_error_handler, |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 115 | .post_internal_cmd = ata_bmdma_post_internal_cmd, |
Alan Cox | eb4a2c7 | 2007-04-11 00:04:20 +0100 | [diff] [blame] | 116 | .cable_detect = ata_cable_unknown, |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 117 | |
| 118 | .qc_prep = ata_qc_prep, |
| 119 | .qc_issue = ata_qc_issue_prot, |
Jeff Garzik | bda3028 | 2006-09-27 05:41:13 -0400 | [diff] [blame] | 120 | |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 121 | .irq_handler = ata_interrupt, |
| 122 | .irq_clear = ata_bmdma_irq_clear, |
Akira Iguchi | 246ce3b | 2007-01-26 16:27:58 +0900 | [diff] [blame] | 123 | .irq_on = ata_irq_on, |
| 124 | .irq_ack = ata_irq_ack, |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 125 | |
| 126 | .port_start = ata_port_start, |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 127 | }; |
| 128 | |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 129 | static int all_generic_ide; /* Set to claim all devices */ |
| 130 | |
| 131 | /** |
| 132 | * ata_generic_init - attach generic IDE |
| 133 | * @dev: PCI device found |
| 134 | * @id: match entry |
| 135 | * |
| 136 | * Called each time a matching IDE interface is found. We check if the |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 137 | * interface is one we wish to claim and if so we perform any chip |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 138 | * specific hacks then let the ATA layer do the heavy lifting. |
| 139 | */ |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 140 | |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 141 | static int ata_generic_init_one(struct pci_dev *dev, const struct pci_device_id *id) |
| 142 | { |
| 143 | u16 command; |
Tejun Heo | 1626aeb | 2007-05-04 12:43:58 +0200 | [diff] [blame] | 144 | static const struct ata_port_info info = { |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 145 | .sht = &generic_sht, |
| 146 | .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST, |
| 147 | .pio_mask = 0x1f, |
| 148 | .mwdma_mask = 0x07, |
| 149 | .udma_mask = 0x3f, |
| 150 | .port_ops = &generic_port_ops |
| 151 | }; |
Tejun Heo | 1626aeb | 2007-05-04 12:43:58 +0200 | [diff] [blame] | 152 | const struct ata_port_info *ppi[] = { &info, NULL }; |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 153 | |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 154 | /* Don't use the generic entry unless instructed to do so */ |
| 155 | if (id->driver_data == 1 && all_generic_ide == 0) |
| 156 | return -ENODEV; |
| 157 | |
| 158 | /* Devices that need care */ |
| 159 | if (dev->vendor == PCI_VENDOR_ID_UMC && |
| 160 | dev->device == PCI_DEVICE_ID_UMC_UM8886A && |
| 161 | (!(PCI_FUNC(dev->devfn) & 1))) |
| 162 | return -ENODEV; |
| 163 | |
| 164 | if (dev->vendor == PCI_VENDOR_ID_OPTI && |
| 165 | dev->device == PCI_DEVICE_ID_OPTI_82C558 && |
| 166 | (!(PCI_FUNC(dev->devfn) & 1))) |
| 167 | return -ENODEV; |
| 168 | |
| 169 | /* Don't re-enable devices in generic mode or we will break some |
| 170 | motherboards with disabled and unused IDE controllers */ |
| 171 | pci_read_config_word(dev, PCI_COMMAND, &command); |
| 172 | if (!(command & PCI_COMMAND_IO)) |
| 173 | return -ENODEV; |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 174 | |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 175 | if (dev->vendor == PCI_VENDOR_ID_AL) |
| 176 | ata_pci_clear_simplex(dev); |
| 177 | |
Tejun Heo | 1626aeb | 2007-05-04 12:43:58 +0200 | [diff] [blame] | 178 | return ata_pci_init_one(dev, ppi); |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 179 | } |
| 180 | |
| 181 | static struct pci_device_id ata_generic[] = { |
| 182 | { PCI_DEVICE(PCI_VENDOR_ID_PCTECH, PCI_DEVICE_ID_PCTECH_SAMURAI_IDE), }, |
| 183 | { PCI_DEVICE(PCI_VENDOR_ID_HOLTEK, PCI_DEVICE_ID_HOLTEK_6565), }, |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 184 | { PCI_DEVICE(PCI_VENDOR_ID_UMC, PCI_DEVICE_ID_UMC_UM8673F), }, |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 185 | { PCI_DEVICE(PCI_VENDOR_ID_UMC, PCI_DEVICE_ID_UMC_UM8886A), }, |
| 186 | { PCI_DEVICE(PCI_VENDOR_ID_UMC, PCI_DEVICE_ID_UMC_UM8886BF), }, |
| 187 | { PCI_DEVICE(PCI_VENDOR_ID_HINT, PCI_DEVICE_ID_HINT_VXPROII_IDE), }, |
| 188 | { PCI_DEVICE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C561), }, |
| 189 | { PCI_DEVICE(PCI_VENDOR_ID_OPTI, PCI_DEVICE_ID_OPTI_82C558), }, |
| 190 | { PCI_DEVICE(PCI_VENDOR_ID_TOSHIBA,PCI_DEVICE_ID_TOSHIBA_PICCOLO), }, |
| 191 | { PCI_DEVICE(PCI_VENDOR_ID_TOSHIBA,PCI_DEVICE_ID_TOSHIBA_PICCOLO_1), }, |
| 192 | { PCI_DEVICE(PCI_VENDOR_ID_TOSHIBA,PCI_DEVICE_ID_TOSHIBA_PICCOLO_2), }, |
| 193 | /* Must come last. If you add entries adjust this table appropriately */ |
| 194 | { PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_STORAGE_IDE << 8, 0xFFFFFF00UL, 1}, |
| 195 | { 0, }, |
| 196 | }; |
| 197 | |
| 198 | static struct pci_driver ata_generic_pci_driver = { |
| 199 | .name = DRV_NAME, |
| 200 | .id_table = ata_generic, |
| 201 | .probe = ata_generic_init_one, |
Alan | 30ced0f | 2006-11-22 16:57:36 +0000 | [diff] [blame] | 202 | .remove = ata_pci_remove_one, |
Tejun Heo | 438ac6d | 2007-03-02 17:31:26 +0900 | [diff] [blame] | 203 | #ifdef CONFIG_PM |
Alan | 30ced0f | 2006-11-22 16:57:36 +0000 | [diff] [blame] | 204 | .suspend = ata_pci_device_suspend, |
| 205 | .resume = ata_pci_device_resume, |
Tejun Heo | 438ac6d | 2007-03-02 17:31:26 +0900 | [diff] [blame] | 206 | #endif |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 207 | }; |
| 208 | |
| 209 | static int __init ata_generic_init(void) |
| 210 | { |
Henrik Kretzschmar | 3f03c67 | 2006-10-10 14:28:12 -0700 | [diff] [blame] | 211 | return pci_register_driver(&ata_generic_pci_driver); |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 212 | } |
| 213 | |
| 214 | |
| 215 | static void __exit ata_generic_exit(void) |
| 216 | { |
| 217 | pci_unregister_driver(&ata_generic_pci_driver); |
| 218 | } |
| 219 | |
| 220 | |
| 221 | MODULE_AUTHOR("Alan Cox"); |
| 222 | MODULE_DESCRIPTION("low-level driver for generic ATA"); |
| 223 | MODULE_LICENSE("GPL"); |
| 224 | MODULE_DEVICE_TABLE(pci, ata_generic); |
| 225 | MODULE_VERSION(DRV_VERSION); |
| 226 | |
| 227 | module_init(ata_generic_init); |
| 228 | module_exit(ata_generic_exit); |
| 229 | |
| 230 | module_param(all_generic_ide, int, 0); |