Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * ahci.c - AHCI SATA support |
| 3 | * |
Jeff Garzik | af36d7f | 2005-08-28 20:18:39 -0400 | [diff] [blame] | 4 | * Maintained by: Jeff Garzik <jgarzik@pobox.com> |
| 5 | * Please ALWAYS copy linux-ide@vger.kernel.org |
| 6 | * on emails. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7 | * |
Jeff Garzik | af36d7f | 2005-08-28 20:18:39 -0400 | [diff] [blame] | 8 | * Copyright 2004-2005 Red Hat, Inc. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 9 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 10 | * |
Jeff Garzik | af36d7f | 2005-08-28 20:18:39 -0400 | [diff] [blame] | 11 | * This program is free software; you can redistribute it and/or modify |
| 12 | * it under the terms of the GNU General Public License as published by |
| 13 | * the Free Software Foundation; either version 2, or (at your option) |
| 14 | * any later version. |
| 15 | * |
| 16 | * This program is distributed in the hope that it will be useful, |
| 17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 19 | * GNU General Public License for more details. |
| 20 | * |
| 21 | * You should have received a copy of the GNU General Public License |
| 22 | * along with this program; see the file COPYING. If not, write to |
| 23 | * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. |
| 24 | * |
| 25 | * |
| 26 | * libata documentation is available via 'make {ps|pdf}docs', |
| 27 | * as Documentation/DocBook/libata.* |
| 28 | * |
| 29 | * AHCI hardware documentation: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 30 | * http://www.intel.com/technology/serialata/pdf/rev1_0.pdf |
Jeff Garzik | af36d7f | 2005-08-28 20:18:39 -0400 | [diff] [blame] | 31 | * http://www.intel.com/technology/serialata/pdf/rev1_1.pdf |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 32 | * |
| 33 | */ |
| 34 | |
| 35 | #include <linux/kernel.h> |
| 36 | #include <linux/module.h> |
| 37 | #include <linux/pci.h> |
| 38 | #include <linux/init.h> |
| 39 | #include <linux/blkdev.h> |
| 40 | #include <linux/delay.h> |
| 41 | #include <linux/interrupt.h> |
| 42 | #include <linux/sched.h> |
domen@coderock.org | 87507cf | 2005-04-08 09:53:06 +0200 | [diff] [blame] | 43 | #include <linux/dma-mapping.h> |
Jeff Garzik | a9524a7 | 2005-10-30 14:39:11 -0500 | [diff] [blame] | 44 | #include <linux/device.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 45 | #include <scsi/scsi_host.h> |
Jeff Garzik | 193515d | 2005-11-07 00:59:37 -0500 | [diff] [blame] | 46 | #include <scsi/scsi_cmnd.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 47 | #include <linux/libata.h> |
| 48 | #include <asm/io.h> |
| 49 | |
| 50 | #define DRV_NAME "ahci" |
Jeff Garzik | af64371 | 2006-04-02 20:41:36 -0400 | [diff] [blame] | 51 | #define DRV_VERSION "1.3" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 52 | |
| 53 | |
| 54 | enum { |
| 55 | AHCI_PCI_BAR = 5, |
| 56 | AHCI_MAX_SG = 168, /* hardware max is 64K */ |
| 57 | AHCI_DMA_BOUNDARY = 0xffffffff, |
| 58 | AHCI_USE_CLUSTERING = 0, |
| 59 | AHCI_CMD_SLOT_SZ = 32 * 32, |
| 60 | AHCI_RX_FIS_SZ = 256, |
| 61 | AHCI_CMD_TBL_HDR = 0x80, |
Jeff Garzik | a0ea732 | 2005-06-04 01:13:15 -0400 | [diff] [blame] | 62 | AHCI_CMD_TBL_CDB = 0x40, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 63 | AHCI_CMD_TBL_SZ = AHCI_CMD_TBL_HDR + (AHCI_MAX_SG * 16), |
| 64 | AHCI_PORT_PRIV_DMA_SZ = AHCI_CMD_SLOT_SZ + AHCI_CMD_TBL_SZ + |
| 65 | AHCI_RX_FIS_SZ, |
| 66 | AHCI_IRQ_ON_SG = (1 << 31), |
| 67 | AHCI_CMD_ATAPI = (1 << 5), |
| 68 | AHCI_CMD_WRITE = (1 << 6), |
Tejun Heo | 4b10e55 | 2006-03-12 11:25:27 +0900 | [diff] [blame] | 69 | AHCI_CMD_PREFETCH = (1 << 7), |
Tejun Heo | 22b4998 | 2006-01-23 21:38:44 +0900 | [diff] [blame] | 70 | AHCI_CMD_RESET = (1 << 8), |
| 71 | AHCI_CMD_CLR_BUSY = (1 << 10), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 72 | |
| 73 | RX_FIS_D2H_REG = 0x40, /* offset of D2H Register FIS data */ |
Tejun Heo | 78cd52d | 2006-05-15 20:58:29 +0900 | [diff] [blame] | 74 | RX_FIS_UNK = 0x60, /* offset of Unknown FIS data */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 75 | |
| 76 | board_ahci = 0, |
Bastiaan Jacques | bf2af2a | 2006-04-17 14:17:59 +0200 | [diff] [blame] | 77 | board_ahci_vt8251 = 1, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 78 | |
| 79 | /* global controller registers */ |
| 80 | HOST_CAP = 0x00, /* host capabilities */ |
| 81 | HOST_CTL = 0x04, /* global host control */ |
| 82 | HOST_IRQ_STAT = 0x08, /* interrupt status */ |
| 83 | HOST_PORTS_IMPL = 0x0c, /* bitmap of implemented ports */ |
| 84 | HOST_VERSION = 0x10, /* AHCI spec. version compliancy */ |
| 85 | |
| 86 | /* HOST_CTL bits */ |
| 87 | HOST_RESET = (1 << 0), /* reset controller; self-clear */ |
| 88 | HOST_IRQ_EN = (1 << 1), /* global IRQ enable */ |
| 89 | HOST_AHCI_EN = (1 << 31), /* AHCI enabled */ |
| 90 | |
| 91 | /* HOST_CAP bits */ |
| 92 | HOST_CAP_64 = (1 << 31), /* PCI DAC (64-bit DMA) support */ |
Tejun Heo | 22b4998 | 2006-01-23 21:38:44 +0900 | [diff] [blame] | 93 | HOST_CAP_CLO = (1 << 24), /* Command List Override support */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 94 | |
| 95 | /* registers for each SATA port */ |
| 96 | PORT_LST_ADDR = 0x00, /* command list DMA addr */ |
| 97 | PORT_LST_ADDR_HI = 0x04, /* command list DMA addr hi */ |
| 98 | PORT_FIS_ADDR = 0x08, /* FIS rx buf addr */ |
| 99 | PORT_FIS_ADDR_HI = 0x0c, /* FIS rx buf addr hi */ |
| 100 | PORT_IRQ_STAT = 0x10, /* interrupt status */ |
| 101 | PORT_IRQ_MASK = 0x14, /* interrupt enable/disable mask */ |
| 102 | PORT_CMD = 0x18, /* port command */ |
| 103 | PORT_TFDATA = 0x20, /* taskfile data */ |
| 104 | PORT_SIG = 0x24, /* device TF signature */ |
| 105 | PORT_CMD_ISSUE = 0x38, /* command issue */ |
| 106 | PORT_SCR = 0x28, /* SATA phy register block */ |
| 107 | PORT_SCR_STAT = 0x28, /* SATA phy register: SStatus */ |
| 108 | PORT_SCR_CTL = 0x2c, /* SATA phy register: SControl */ |
| 109 | PORT_SCR_ERR = 0x30, /* SATA phy register: SError */ |
| 110 | PORT_SCR_ACT = 0x34, /* SATA phy register: SActive */ |
| 111 | |
| 112 | /* PORT_IRQ_{STAT,MASK} bits */ |
| 113 | PORT_IRQ_COLD_PRES = (1 << 31), /* cold presence detect */ |
| 114 | PORT_IRQ_TF_ERR = (1 << 30), /* task file error */ |
| 115 | PORT_IRQ_HBUS_ERR = (1 << 29), /* host bus fatal error */ |
| 116 | PORT_IRQ_HBUS_DATA_ERR = (1 << 28), /* host bus data error */ |
| 117 | PORT_IRQ_IF_ERR = (1 << 27), /* interface fatal error */ |
| 118 | PORT_IRQ_IF_NONFATAL = (1 << 26), /* interface non-fatal error */ |
| 119 | PORT_IRQ_OVERFLOW = (1 << 24), /* xfer exhausted available S/G */ |
| 120 | PORT_IRQ_BAD_PMP = (1 << 23), /* incorrect port multiplier */ |
| 121 | |
| 122 | PORT_IRQ_PHYRDY = (1 << 22), /* PhyRdy changed */ |
| 123 | PORT_IRQ_DEV_ILCK = (1 << 7), /* device interlock */ |
| 124 | PORT_IRQ_CONNECT = (1 << 6), /* port connect change status */ |
| 125 | PORT_IRQ_SG_DONE = (1 << 5), /* descriptor processed */ |
| 126 | PORT_IRQ_UNK_FIS = (1 << 4), /* unknown FIS rx'd */ |
| 127 | PORT_IRQ_SDB_FIS = (1 << 3), /* Set Device Bits FIS rx'd */ |
| 128 | PORT_IRQ_DMAS_FIS = (1 << 2), /* DMA Setup FIS rx'd */ |
| 129 | PORT_IRQ_PIOS_FIS = (1 << 1), /* PIO Setup FIS rx'd */ |
| 130 | PORT_IRQ_D2H_REG_FIS = (1 << 0), /* D2H Register FIS rx'd */ |
| 131 | |
Tejun Heo | 78cd52d | 2006-05-15 20:58:29 +0900 | [diff] [blame] | 132 | PORT_IRQ_FREEZE = PORT_IRQ_HBUS_ERR | |
| 133 | PORT_IRQ_IF_ERR | |
| 134 | PORT_IRQ_CONNECT | |
| 135 | PORT_IRQ_UNK_FIS, |
| 136 | PORT_IRQ_ERROR = PORT_IRQ_FREEZE | |
| 137 | PORT_IRQ_TF_ERR | |
| 138 | PORT_IRQ_HBUS_DATA_ERR, |
| 139 | DEF_PORT_IRQ = PORT_IRQ_ERROR | PORT_IRQ_SG_DONE | |
| 140 | PORT_IRQ_SDB_FIS | PORT_IRQ_DMAS_FIS | |
| 141 | PORT_IRQ_PIOS_FIS | PORT_IRQ_D2H_REG_FIS, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 142 | |
| 143 | /* PORT_CMD bits */ |
Jeff Garzik | 02eaa66 | 2005-11-12 01:32:19 -0500 | [diff] [blame] | 144 | PORT_CMD_ATAPI = (1 << 24), /* Device is ATAPI */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 145 | PORT_CMD_LIST_ON = (1 << 15), /* cmd list DMA engine running */ |
| 146 | PORT_CMD_FIS_ON = (1 << 14), /* FIS DMA engine running */ |
| 147 | PORT_CMD_FIS_RX = (1 << 4), /* Enable FIS receive DMA engine */ |
Tejun Heo | 22b4998 | 2006-01-23 21:38:44 +0900 | [diff] [blame] | 148 | PORT_CMD_CLO = (1 << 3), /* Command list override */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 149 | PORT_CMD_POWER_ON = (1 << 2), /* Power up device */ |
| 150 | PORT_CMD_SPIN_UP = (1 << 1), /* Spin up device */ |
| 151 | PORT_CMD_START = (1 << 0), /* Enable port DMA engine */ |
| 152 | |
| 153 | PORT_CMD_ICC_ACTIVE = (0x1 << 28), /* Put i/f in active state */ |
| 154 | PORT_CMD_ICC_PARTIAL = (0x2 << 28), /* Put i/f in partial state */ |
| 155 | PORT_CMD_ICC_SLUMBER = (0x6 << 28), /* Put i/f in slumber state */ |
Jeff Garzik | 4b0060f | 2005-06-04 00:50:22 -0400 | [diff] [blame] | 156 | |
| 157 | /* hpriv->flags bits */ |
| 158 | AHCI_FLAG_MSI = (1 << 0), |
Bastiaan Jacques | bf2af2a | 2006-04-17 14:17:59 +0200 | [diff] [blame] | 159 | |
| 160 | /* ap->flags bits */ |
| 161 | AHCI_FLAG_RESET_NEEDS_CLO = (1 << 24), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 162 | }; |
| 163 | |
| 164 | struct ahci_cmd_hdr { |
| 165 | u32 opts; |
| 166 | u32 status; |
| 167 | u32 tbl_addr; |
| 168 | u32 tbl_addr_hi; |
| 169 | u32 reserved[4]; |
| 170 | }; |
| 171 | |
| 172 | struct ahci_sg { |
| 173 | u32 addr; |
| 174 | u32 addr_hi; |
| 175 | u32 reserved; |
| 176 | u32 flags_size; |
| 177 | }; |
| 178 | |
| 179 | struct ahci_host_priv { |
| 180 | unsigned long flags; |
| 181 | u32 cap; /* cache of HOST_CAP register */ |
| 182 | u32 port_map; /* cache of HOST_PORTS_IMPL reg */ |
| 183 | }; |
| 184 | |
| 185 | struct ahci_port_priv { |
| 186 | struct ahci_cmd_hdr *cmd_slot; |
| 187 | dma_addr_t cmd_slot_dma; |
| 188 | void *cmd_tbl; |
| 189 | dma_addr_t cmd_tbl_dma; |
| 190 | struct ahci_sg *cmd_tbl_sg; |
| 191 | void *rx_fis; |
| 192 | dma_addr_t rx_fis_dma; |
| 193 | }; |
| 194 | |
| 195 | static u32 ahci_scr_read (struct ata_port *ap, unsigned int sc_reg); |
| 196 | static void ahci_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val); |
| 197 | static int ahci_init_one (struct pci_dev *pdev, const struct pci_device_id *ent); |
Tejun Heo | 9a3d9eb | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 198 | static unsigned int ahci_qc_issue(struct ata_queued_cmd *qc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 199 | static irqreturn_t ahci_interrupt (int irq, void *dev_instance, struct pt_regs *regs); |
Tejun Heo | 4bd00f6 | 2006-02-11 16:26:02 +0900 | [diff] [blame] | 200 | static int ahci_probe_reset(struct ata_port *ap, unsigned int *classes); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 201 | static void ahci_irq_clear(struct ata_port *ap); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 202 | static int ahci_port_start(struct ata_port *ap); |
| 203 | static void ahci_port_stop(struct ata_port *ap); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 204 | static void ahci_tf_read(struct ata_port *ap, struct ata_taskfile *tf); |
| 205 | static void ahci_qc_prep(struct ata_queued_cmd *qc); |
| 206 | static u8 ahci_check_status(struct ata_port *ap); |
Tejun Heo | 78cd52d | 2006-05-15 20:58:29 +0900 | [diff] [blame] | 207 | static void ahci_freeze(struct ata_port *ap); |
| 208 | static void ahci_thaw(struct ata_port *ap); |
| 209 | static void ahci_error_handler(struct ata_port *ap); |
| 210 | static void ahci_post_internal_cmd(struct ata_queued_cmd *qc); |
Jeff Garzik | 907f467 | 2005-05-12 15:03:42 -0400 | [diff] [blame] | 211 | static void ahci_remove_one (struct pci_dev *pdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 212 | |
Jeff Garzik | 193515d | 2005-11-07 00:59:37 -0500 | [diff] [blame] | 213 | static struct scsi_host_template ahci_sht = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 214 | .module = THIS_MODULE, |
| 215 | .name = DRV_NAME, |
| 216 | .ioctl = ata_scsi_ioctl, |
| 217 | .queuecommand = ata_scsi_queuecmd, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 218 | .can_queue = ATA_DEF_QUEUE, |
| 219 | .this_id = ATA_SHT_THIS_ID, |
| 220 | .sg_tablesize = AHCI_MAX_SG, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 221 | .cmd_per_lun = ATA_SHT_CMD_PER_LUN, |
| 222 | .emulated = ATA_SHT_EMULATED, |
| 223 | .use_clustering = AHCI_USE_CLUSTERING, |
| 224 | .proc_name = DRV_NAME, |
| 225 | .dma_boundary = AHCI_DMA_BOUNDARY, |
| 226 | .slave_configure = ata_scsi_slave_config, |
| 227 | .bios_param = ata_std_bios_param, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 228 | }; |
| 229 | |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 230 | static const struct ata_port_operations ahci_ops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 231 | .port_disable = ata_port_disable, |
| 232 | |
| 233 | .check_status = ahci_check_status, |
| 234 | .check_altstatus = ahci_check_status, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 235 | .dev_select = ata_noop_dev_select, |
| 236 | |
| 237 | .tf_read = ahci_tf_read, |
| 238 | |
Tejun Heo | 4bd00f6 | 2006-02-11 16:26:02 +0900 | [diff] [blame] | 239 | .probe_reset = ahci_probe_reset, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 240 | |
| 241 | .qc_prep = ahci_qc_prep, |
| 242 | .qc_issue = ahci_qc_issue, |
| 243 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 244 | .irq_handler = ahci_interrupt, |
| 245 | .irq_clear = ahci_irq_clear, |
| 246 | |
| 247 | .scr_read = ahci_scr_read, |
| 248 | .scr_write = ahci_scr_write, |
| 249 | |
Tejun Heo | 78cd52d | 2006-05-15 20:58:29 +0900 | [diff] [blame] | 250 | .freeze = ahci_freeze, |
| 251 | .thaw = ahci_thaw, |
| 252 | |
| 253 | .error_handler = ahci_error_handler, |
| 254 | .post_internal_cmd = ahci_post_internal_cmd, |
| 255 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 256 | .port_start = ahci_port_start, |
| 257 | .port_stop = ahci_port_stop, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 258 | }; |
| 259 | |
Arjan van de Ven | 98ac62d | 2005-11-28 10:06:23 +0100 | [diff] [blame] | 260 | static const struct ata_port_info ahci_port_info[] = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 261 | /* board_ahci */ |
| 262 | { |
| 263 | .sht = &ahci_sht, |
| 264 | .host_flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY | |
Tejun Heo | 4bd00f6 | 2006-02-11 16:26:02 +0900 | [diff] [blame] | 265 | ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA, |
Brett Russ | 7da7931 | 2005-09-01 21:53:34 -0400 | [diff] [blame] | 266 | .pio_mask = 0x1f, /* pio0-4 */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 267 | .udma_mask = 0x7f, /* udma0-6 ; FIXME */ |
| 268 | .port_ops = &ahci_ops, |
| 269 | }, |
Bastiaan Jacques | bf2af2a | 2006-04-17 14:17:59 +0200 | [diff] [blame] | 270 | /* board_ahci_vt8251 */ |
| 271 | { |
| 272 | .sht = &ahci_sht, |
| 273 | .host_flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY | |
| 274 | ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA | |
| 275 | AHCI_FLAG_RESET_NEEDS_CLO, |
| 276 | .pio_mask = 0x1f, /* pio0-4 */ |
| 277 | .udma_mask = 0x7f, /* udma0-6 ; FIXME */ |
| 278 | .port_ops = &ahci_ops, |
| 279 | }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 280 | }; |
| 281 | |
Jeff Garzik | 3b7d697 | 2005-11-10 11:04:11 -0500 | [diff] [blame] | 282 | static const struct pci_device_id ahci_pci_tbl[] = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 283 | { PCI_VENDOR_ID_INTEL, 0x2652, PCI_ANY_ID, PCI_ANY_ID, 0, 0, |
| 284 | board_ahci }, /* ICH6 */ |
| 285 | { PCI_VENDOR_ID_INTEL, 0x2653, PCI_ANY_ID, PCI_ANY_ID, 0, 0, |
| 286 | board_ahci }, /* ICH6M */ |
| 287 | { PCI_VENDOR_ID_INTEL, 0x27c1, PCI_ANY_ID, PCI_ANY_ID, 0, 0, |
| 288 | board_ahci }, /* ICH7 */ |
| 289 | { PCI_VENDOR_ID_INTEL, 0x27c5, PCI_ANY_ID, PCI_ANY_ID, 0, 0, |
| 290 | board_ahci }, /* ICH7M */ |
| 291 | { PCI_VENDOR_ID_INTEL, 0x27c3, PCI_ANY_ID, PCI_ANY_ID, 0, 0, |
| 292 | board_ahci }, /* ICH7R */ |
| 293 | { PCI_VENDOR_ID_AL, 0x5288, PCI_ANY_ID, PCI_ANY_ID, 0, 0, |
| 294 | board_ahci }, /* ULi M5288 */ |
Jason Gaston | 680d323 | 2005-04-16 15:24:45 -0700 | [diff] [blame] | 295 | { PCI_VENDOR_ID_INTEL, 0x2681, PCI_ANY_ID, PCI_ANY_ID, 0, 0, |
| 296 | board_ahci }, /* ESB2 */ |
| 297 | { PCI_VENDOR_ID_INTEL, 0x2682, PCI_ANY_ID, PCI_ANY_ID, 0, 0, |
| 298 | board_ahci }, /* ESB2 */ |
| 299 | { PCI_VENDOR_ID_INTEL, 0x2683, PCI_ANY_ID, PCI_ANY_ID, 0, 0, |
| 300 | board_ahci }, /* ESB2 */ |
Jason Gaston | 3db368f | 2005-08-10 06:18:43 -0700 | [diff] [blame] | 301 | { PCI_VENDOR_ID_INTEL, 0x27c6, PCI_ANY_ID, PCI_ANY_ID, 0, 0, |
| 302 | board_ahci }, /* ICH7-M DH */ |
Jason Gaston | f285757 | 2006-01-09 11:09:13 -0800 | [diff] [blame] | 303 | { PCI_VENDOR_ID_INTEL, 0x2821, PCI_ANY_ID, PCI_ANY_ID, 0, 0, |
| 304 | board_ahci }, /* ICH8 */ |
| 305 | { PCI_VENDOR_ID_INTEL, 0x2822, PCI_ANY_ID, PCI_ANY_ID, 0, 0, |
| 306 | board_ahci }, /* ICH8 */ |
| 307 | { PCI_VENDOR_ID_INTEL, 0x2824, PCI_ANY_ID, PCI_ANY_ID, 0, 0, |
| 308 | board_ahci }, /* ICH8 */ |
| 309 | { PCI_VENDOR_ID_INTEL, 0x2829, PCI_ANY_ID, PCI_ANY_ID, 0, 0, |
| 310 | board_ahci }, /* ICH8M */ |
| 311 | { PCI_VENDOR_ID_INTEL, 0x282a, PCI_ANY_ID, PCI_ANY_ID, 0, 0, |
| 312 | board_ahci }, /* ICH8M */ |
Jeff Garzik | bd12097 | 2006-01-29 02:47:03 -0500 | [diff] [blame] | 313 | { 0x197b, 0x2360, PCI_ANY_ID, PCI_ANY_ID, 0, 0, |
| 314 | board_ahci }, /* JMicron JMB360 */ |
Jeff Garzik | 9220a2d | 2006-01-29 12:40:57 -0500 | [diff] [blame] | 315 | { 0x197b, 0x2363, PCI_ANY_ID, PCI_ANY_ID, 0, 0, |
| 316 | board_ahci }, /* JMicron JMB363 */ |
Jeff Garzik | 8b316a3 | 2006-03-30 17:07:32 -0500 | [diff] [blame] | 317 | { PCI_VENDOR_ID_ATI, 0x4380, PCI_ANY_ID, PCI_ANY_ID, 0, 0, |
| 318 | board_ahci }, /* ATI SB600 non-raid */ |
| 319 | { PCI_VENDOR_ID_ATI, 0x4381, PCI_ANY_ID, PCI_ANY_ID, 0, 0, |
| 320 | board_ahci }, /* ATI SB600 raid */ |
Bastiaan Jacques | bf2af2a | 2006-04-17 14:17:59 +0200 | [diff] [blame] | 321 | { PCI_VENDOR_ID_VIA, 0x3349, PCI_ANY_ID, PCI_ANY_ID, 0, 0, |
| 322 | board_ahci_vt8251 }, /* VIA VT8251 */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 323 | { } /* terminate list */ |
| 324 | }; |
| 325 | |
| 326 | |
| 327 | static struct pci_driver ahci_pci_driver = { |
| 328 | .name = DRV_NAME, |
| 329 | .id_table = ahci_pci_tbl, |
| 330 | .probe = ahci_init_one, |
Jeff Garzik | 907f467 | 2005-05-12 15:03:42 -0400 | [diff] [blame] | 331 | .remove = ahci_remove_one, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 332 | }; |
| 333 | |
| 334 | |
| 335 | static inline unsigned long ahci_port_base_ul (unsigned long base, unsigned int port) |
| 336 | { |
| 337 | return base + 0x100 + (port * 0x80); |
| 338 | } |
| 339 | |
Jeff Garzik | ea6ba10 | 2005-08-30 05:18:18 -0400 | [diff] [blame] | 340 | static inline void __iomem *ahci_port_base (void __iomem *base, unsigned int port) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 341 | { |
Jeff Garzik | ea6ba10 | 2005-08-30 05:18:18 -0400 | [diff] [blame] | 342 | return (void __iomem *) ahci_port_base_ul((unsigned long)base, port); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 343 | } |
| 344 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 345 | static int ahci_port_start(struct ata_port *ap) |
| 346 | { |
| 347 | struct device *dev = ap->host_set->dev; |
| 348 | struct ahci_host_priv *hpriv = ap->host_set->private_data; |
| 349 | struct ahci_port_priv *pp; |
Jeff Garzik | ea6ba10 | 2005-08-30 05:18:18 -0400 | [diff] [blame] | 350 | void __iomem *mmio = ap->host_set->mmio_base; |
| 351 | void __iomem *port_mmio = ahci_port_base(mmio, ap->port_no); |
| 352 | void *mem; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 353 | dma_addr_t mem_dma; |
Jeff Garzik | 6037d6b | 2005-11-04 22:08:00 -0500 | [diff] [blame] | 354 | int rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 355 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 356 | pp = kmalloc(sizeof(*pp), GFP_KERNEL); |
Tejun Heo | 0a139e7 | 2005-06-26 23:52:50 +0900 | [diff] [blame] | 357 | if (!pp) |
| 358 | return -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 359 | memset(pp, 0, sizeof(*pp)); |
| 360 | |
Jeff Garzik | 6037d6b | 2005-11-04 22:08:00 -0500 | [diff] [blame] | 361 | rc = ata_pad_alloc(ap, dev); |
| 362 | if (rc) { |
Jeff Garzik | cedc9a4 | 2005-10-05 07:13:30 -0400 | [diff] [blame] | 363 | kfree(pp); |
Jeff Garzik | 6037d6b | 2005-11-04 22:08:00 -0500 | [diff] [blame] | 364 | return rc; |
Jeff Garzik | cedc9a4 | 2005-10-05 07:13:30 -0400 | [diff] [blame] | 365 | } |
| 366 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 367 | mem = dma_alloc_coherent(dev, AHCI_PORT_PRIV_DMA_SZ, &mem_dma, GFP_KERNEL); |
| 368 | if (!mem) { |
Jeff Garzik | 6037d6b | 2005-11-04 22:08:00 -0500 | [diff] [blame] | 369 | ata_pad_free(ap, dev); |
Tejun Heo | 0a139e7 | 2005-06-26 23:52:50 +0900 | [diff] [blame] | 370 | kfree(pp); |
| 371 | return -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 372 | } |
| 373 | memset(mem, 0, AHCI_PORT_PRIV_DMA_SZ); |
| 374 | |
| 375 | /* |
| 376 | * First item in chunk of DMA memory: 32-slot command table, |
| 377 | * 32 bytes each in size |
| 378 | */ |
| 379 | pp->cmd_slot = mem; |
| 380 | pp->cmd_slot_dma = mem_dma; |
| 381 | |
| 382 | mem += AHCI_CMD_SLOT_SZ; |
| 383 | mem_dma += AHCI_CMD_SLOT_SZ; |
| 384 | |
| 385 | /* |
| 386 | * Second item: Received-FIS area |
| 387 | */ |
| 388 | pp->rx_fis = mem; |
| 389 | pp->rx_fis_dma = mem_dma; |
| 390 | |
| 391 | mem += AHCI_RX_FIS_SZ; |
| 392 | mem_dma += AHCI_RX_FIS_SZ; |
| 393 | |
| 394 | /* |
| 395 | * Third item: data area for storing a single command |
| 396 | * and its scatter-gather table |
| 397 | */ |
| 398 | pp->cmd_tbl = mem; |
| 399 | pp->cmd_tbl_dma = mem_dma; |
| 400 | |
| 401 | pp->cmd_tbl_sg = mem + AHCI_CMD_TBL_HDR; |
| 402 | |
| 403 | ap->private_data = pp; |
| 404 | |
| 405 | if (hpriv->cap & HOST_CAP_64) |
| 406 | writel((pp->cmd_slot_dma >> 16) >> 16, port_mmio + PORT_LST_ADDR_HI); |
| 407 | writel(pp->cmd_slot_dma & 0xffffffff, port_mmio + PORT_LST_ADDR); |
| 408 | readl(port_mmio + PORT_LST_ADDR); /* flush */ |
| 409 | |
| 410 | if (hpriv->cap & HOST_CAP_64) |
| 411 | writel((pp->rx_fis_dma >> 16) >> 16, port_mmio + PORT_FIS_ADDR_HI); |
| 412 | writel(pp->rx_fis_dma & 0xffffffff, port_mmio + PORT_FIS_ADDR); |
| 413 | readl(port_mmio + PORT_FIS_ADDR); /* flush */ |
| 414 | |
| 415 | writel(PORT_CMD_ICC_ACTIVE | PORT_CMD_FIS_RX | |
| 416 | PORT_CMD_POWER_ON | PORT_CMD_SPIN_UP | |
| 417 | PORT_CMD_START, port_mmio + PORT_CMD); |
| 418 | readl(port_mmio + PORT_CMD); /* flush */ |
| 419 | |
| 420 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 421 | } |
| 422 | |
| 423 | |
| 424 | static void ahci_port_stop(struct ata_port *ap) |
| 425 | { |
| 426 | struct device *dev = ap->host_set->dev; |
| 427 | struct ahci_port_priv *pp = ap->private_data; |
Jeff Garzik | ea6ba10 | 2005-08-30 05:18:18 -0400 | [diff] [blame] | 428 | void __iomem *mmio = ap->host_set->mmio_base; |
| 429 | void __iomem *port_mmio = ahci_port_base(mmio, ap->port_no); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 430 | u32 tmp; |
| 431 | |
| 432 | tmp = readl(port_mmio + PORT_CMD); |
| 433 | tmp &= ~(PORT_CMD_START | PORT_CMD_FIS_RX); |
| 434 | writel(tmp, port_mmio + PORT_CMD); |
| 435 | readl(port_mmio + PORT_CMD); /* flush */ |
| 436 | |
| 437 | /* spec says 500 msecs for each PORT_CMD_{START,FIS_RX} bit, so |
| 438 | * this is slightly incorrect. |
| 439 | */ |
| 440 | msleep(500); |
| 441 | |
| 442 | ap->private_data = NULL; |
| 443 | dma_free_coherent(dev, AHCI_PORT_PRIV_DMA_SZ, |
| 444 | pp->cmd_slot, pp->cmd_slot_dma); |
Jeff Garzik | 6037d6b | 2005-11-04 22:08:00 -0500 | [diff] [blame] | 445 | ata_pad_free(ap, dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 446 | kfree(pp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 447 | } |
| 448 | |
| 449 | static u32 ahci_scr_read (struct ata_port *ap, unsigned int sc_reg_in) |
| 450 | { |
| 451 | unsigned int sc_reg; |
| 452 | |
| 453 | switch (sc_reg_in) { |
| 454 | case SCR_STATUS: sc_reg = 0; break; |
| 455 | case SCR_CONTROL: sc_reg = 1; break; |
| 456 | case SCR_ERROR: sc_reg = 2; break; |
| 457 | case SCR_ACTIVE: sc_reg = 3; break; |
| 458 | default: |
| 459 | return 0xffffffffU; |
| 460 | } |
| 461 | |
Al Viro | 1e4f2a9 | 2005-10-21 06:46:02 +0100 | [diff] [blame] | 462 | return readl((void __iomem *) ap->ioaddr.scr_addr + (sc_reg * 4)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 463 | } |
| 464 | |
| 465 | |
| 466 | static void ahci_scr_write (struct ata_port *ap, unsigned int sc_reg_in, |
| 467 | u32 val) |
| 468 | { |
| 469 | unsigned int sc_reg; |
| 470 | |
| 471 | switch (sc_reg_in) { |
| 472 | case SCR_STATUS: sc_reg = 0; break; |
| 473 | case SCR_CONTROL: sc_reg = 1; break; |
| 474 | case SCR_ERROR: sc_reg = 2; break; |
| 475 | case SCR_ACTIVE: sc_reg = 3; break; |
| 476 | default: |
| 477 | return; |
| 478 | } |
| 479 | |
Al Viro | 1e4f2a9 | 2005-10-21 06:46:02 +0100 | [diff] [blame] | 480 | writel(val, (void __iomem *) ap->ioaddr.scr_addr + (sc_reg * 4)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 481 | } |
| 482 | |
Tejun Heo | 7c76d1e | 2005-12-19 22:36:34 +0900 | [diff] [blame] | 483 | static int ahci_stop_engine(struct ata_port *ap) |
| 484 | { |
| 485 | void __iomem *mmio = ap->host_set->mmio_base; |
| 486 | void __iomem *port_mmio = ahci_port_base(mmio, ap->port_no); |
| 487 | int work; |
| 488 | u32 tmp; |
| 489 | |
| 490 | tmp = readl(port_mmio + PORT_CMD); |
| 491 | tmp &= ~PORT_CMD_START; |
| 492 | writel(tmp, port_mmio + PORT_CMD); |
| 493 | |
| 494 | /* wait for engine to stop. TODO: this could be |
| 495 | * as long as 500 msec |
| 496 | */ |
| 497 | work = 1000; |
| 498 | while (work-- > 0) { |
| 499 | tmp = readl(port_mmio + PORT_CMD); |
| 500 | if ((tmp & PORT_CMD_LIST_ON) == 0) |
| 501 | return 0; |
| 502 | udelay(10); |
| 503 | } |
| 504 | |
| 505 | return -EIO; |
| 506 | } |
| 507 | |
| 508 | static void ahci_start_engine(struct ata_port *ap) |
| 509 | { |
| 510 | void __iomem *mmio = ap->host_set->mmio_base; |
| 511 | void __iomem *port_mmio = ahci_port_base(mmio, ap->port_no); |
| 512 | u32 tmp; |
| 513 | |
| 514 | tmp = readl(port_mmio + PORT_CMD); |
| 515 | tmp |= PORT_CMD_START; |
| 516 | writel(tmp, port_mmio + PORT_CMD); |
| 517 | readl(port_mmio + PORT_CMD); /* flush */ |
| 518 | } |
| 519 | |
Tejun Heo | 422b759 | 2005-12-19 22:37:17 +0900 | [diff] [blame] | 520 | static unsigned int ahci_dev_classify(struct ata_port *ap) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 521 | { |
| 522 | void __iomem *port_mmio = (void __iomem *) ap->ioaddr.cmd_addr; |
| 523 | struct ata_taskfile tf; |
Tejun Heo | 422b759 | 2005-12-19 22:37:17 +0900 | [diff] [blame] | 524 | u32 tmp; |
| 525 | |
| 526 | tmp = readl(port_mmio + PORT_SIG); |
| 527 | tf.lbah = (tmp >> 24) & 0xff; |
| 528 | tf.lbam = (tmp >> 16) & 0xff; |
| 529 | tf.lbal = (tmp >> 8) & 0xff; |
| 530 | tf.nsect = (tmp) & 0xff; |
| 531 | |
| 532 | return ata_dev_classify(&tf); |
| 533 | } |
| 534 | |
Tejun Heo | a42fc65 | 2006-02-11 16:26:02 +0900 | [diff] [blame] | 535 | static void ahci_fill_cmd_slot(struct ahci_port_priv *pp, u32 opts) |
Tejun Heo | cc9278e | 2006-02-10 17:25:47 +0900 | [diff] [blame] | 536 | { |
Tejun Heo | cc9278e | 2006-02-10 17:25:47 +0900 | [diff] [blame] | 537 | pp->cmd_slot[0].opts = cpu_to_le32(opts); |
| 538 | pp->cmd_slot[0].status = 0; |
| 539 | pp->cmd_slot[0].tbl_addr = cpu_to_le32(pp->cmd_tbl_dma & 0xffffffff); |
| 540 | pp->cmd_slot[0].tbl_addr_hi = cpu_to_le32((pp->cmd_tbl_dma >> 16) >> 16); |
| 541 | } |
| 542 | |
Bastiaan Jacques | bf2af2a | 2006-04-17 14:17:59 +0200 | [diff] [blame] | 543 | static int ahci_clo(struct ata_port *ap) |
| 544 | { |
| 545 | void __iomem *port_mmio = (void __iomem *) ap->ioaddr.cmd_addr; |
| 546 | struct ahci_host_priv *hpriv = ap->host_set->private_data; |
| 547 | u32 tmp; |
| 548 | |
| 549 | if (!(hpriv->cap & HOST_CAP_CLO)) |
| 550 | return -EOPNOTSUPP; |
| 551 | |
| 552 | tmp = readl(port_mmio + PORT_CMD); |
| 553 | tmp |= PORT_CMD_CLO; |
| 554 | writel(tmp, port_mmio + PORT_CMD); |
| 555 | |
| 556 | tmp = ata_wait_register(port_mmio + PORT_CMD, |
| 557 | PORT_CMD_CLO, PORT_CMD_CLO, 1, 500); |
| 558 | if (tmp & PORT_CMD_CLO) |
| 559 | return -EIO; |
| 560 | |
| 561 | return 0; |
| 562 | } |
| 563 | |
Tejun Heo | 2bf2cb2 | 2006-04-11 22:16:45 +0900 | [diff] [blame] | 564 | static int ahci_softreset(struct ata_port *ap, unsigned int *class) |
Tejun Heo | 4658f79 | 2006-03-22 21:07:03 +0900 | [diff] [blame] | 565 | { |
Tejun Heo | 4658f79 | 2006-03-22 21:07:03 +0900 | [diff] [blame] | 566 | struct ahci_port_priv *pp = ap->private_data; |
| 567 | void __iomem *mmio = ap->host_set->mmio_base; |
| 568 | void __iomem *port_mmio = ahci_port_base(mmio, ap->port_no); |
| 569 | const u32 cmd_fis_len = 5; /* five dwords */ |
| 570 | const char *reason = NULL; |
| 571 | struct ata_taskfile tf; |
Tejun Heo | 75fe180 | 2006-04-11 22:22:29 +0900 | [diff] [blame] | 572 | u32 tmp; |
Tejun Heo | 4658f79 | 2006-03-22 21:07:03 +0900 | [diff] [blame] | 573 | u8 *fis; |
| 574 | int rc; |
| 575 | |
| 576 | DPRINTK("ENTER\n"); |
| 577 | |
Tejun Heo | 81952c5 | 2006-05-15 20:57:47 +0900 | [diff] [blame] | 578 | if (ata_port_offline(ap)) { |
Tejun Heo | c2a6585 | 2006-04-03 01:58:06 +0900 | [diff] [blame] | 579 | DPRINTK("PHY reports no device\n"); |
| 580 | *class = ATA_DEV_NONE; |
| 581 | return 0; |
| 582 | } |
| 583 | |
Tejun Heo | 4658f79 | 2006-03-22 21:07:03 +0900 | [diff] [blame] | 584 | /* prepare for SRST (AHCI-1.1 10.4.1) */ |
| 585 | rc = ahci_stop_engine(ap); |
| 586 | if (rc) { |
| 587 | reason = "failed to stop engine"; |
| 588 | goto fail_restart; |
| 589 | } |
| 590 | |
| 591 | /* check BUSY/DRQ, perform Command List Override if necessary */ |
| 592 | ahci_tf_read(ap, &tf); |
| 593 | if (tf.command & (ATA_BUSY | ATA_DRQ)) { |
Bastiaan Jacques | bf2af2a | 2006-04-17 14:17:59 +0200 | [diff] [blame] | 594 | rc = ahci_clo(ap); |
| 595 | |
| 596 | if (rc == -EOPNOTSUPP) { |
| 597 | reason = "port busy but CLO unavailable"; |
Tejun Heo | 4658f79 | 2006-03-22 21:07:03 +0900 | [diff] [blame] | 598 | goto fail_restart; |
Bastiaan Jacques | bf2af2a | 2006-04-17 14:17:59 +0200 | [diff] [blame] | 599 | } else if (rc) { |
| 600 | reason = "port busy but CLO failed"; |
Tejun Heo | 4658f79 | 2006-03-22 21:07:03 +0900 | [diff] [blame] | 601 | goto fail_restart; |
| 602 | } |
| 603 | } |
| 604 | |
| 605 | /* restart engine */ |
| 606 | ahci_start_engine(ap); |
| 607 | |
Tejun Heo | 3373efd | 2006-05-15 20:57:53 +0900 | [diff] [blame] | 608 | ata_tf_init(ap->device, &tf); |
Tejun Heo | 4658f79 | 2006-03-22 21:07:03 +0900 | [diff] [blame] | 609 | fis = pp->cmd_tbl; |
| 610 | |
| 611 | /* issue the first D2H Register FIS */ |
| 612 | ahci_fill_cmd_slot(pp, cmd_fis_len | AHCI_CMD_RESET | AHCI_CMD_CLR_BUSY); |
| 613 | |
| 614 | tf.ctl |= ATA_SRST; |
| 615 | ata_tf_to_fis(&tf, fis, 0); |
| 616 | fis[1] &= ~(1 << 7); /* turn off Command FIS bit */ |
| 617 | |
| 618 | writel(1, port_mmio + PORT_CMD_ISSUE); |
Tejun Heo | 4658f79 | 2006-03-22 21:07:03 +0900 | [diff] [blame] | 619 | |
Tejun Heo | 75fe180 | 2006-04-11 22:22:29 +0900 | [diff] [blame] | 620 | tmp = ata_wait_register(port_mmio + PORT_CMD_ISSUE, 0x1, 0x1, 1, 500); |
| 621 | if (tmp & 0x1) { |
Tejun Heo | 4658f79 | 2006-03-22 21:07:03 +0900 | [diff] [blame] | 622 | rc = -EIO; |
| 623 | reason = "1st FIS failed"; |
| 624 | goto fail; |
| 625 | } |
| 626 | |
| 627 | /* spec says at least 5us, but be generous and sleep for 1ms */ |
| 628 | msleep(1); |
| 629 | |
| 630 | /* issue the second D2H Register FIS */ |
| 631 | ahci_fill_cmd_slot(pp, cmd_fis_len); |
| 632 | |
| 633 | tf.ctl &= ~ATA_SRST; |
| 634 | ata_tf_to_fis(&tf, fis, 0); |
| 635 | fis[1] &= ~(1 << 7); /* turn off Command FIS bit */ |
| 636 | |
| 637 | writel(1, port_mmio + PORT_CMD_ISSUE); |
| 638 | readl(port_mmio + PORT_CMD_ISSUE); /* flush */ |
| 639 | |
| 640 | /* spec mandates ">= 2ms" before checking status. |
| 641 | * We wait 150ms, because that was the magic delay used for |
| 642 | * ATAPI devices in Hale Landis's ATADRVR, for the period of time |
| 643 | * between when the ATA command register is written, and then |
| 644 | * status is checked. Because waiting for "a while" before |
| 645 | * checking status is fine, post SRST, we perform this magic |
| 646 | * delay here as well. |
| 647 | */ |
| 648 | msleep(150); |
| 649 | |
| 650 | *class = ATA_DEV_NONE; |
Tejun Heo | 81952c5 | 2006-05-15 20:57:47 +0900 | [diff] [blame] | 651 | if (ata_port_online(ap)) { |
Tejun Heo | 4658f79 | 2006-03-22 21:07:03 +0900 | [diff] [blame] | 652 | if (ata_busy_sleep(ap, ATA_TMOUT_BOOT_QUICK, ATA_TMOUT_BOOT)) { |
| 653 | rc = -EIO; |
| 654 | reason = "device not ready"; |
| 655 | goto fail; |
| 656 | } |
| 657 | *class = ahci_dev_classify(ap); |
| 658 | } |
| 659 | |
| 660 | DPRINTK("EXIT, class=%u\n", *class); |
| 661 | return 0; |
| 662 | |
| 663 | fail_restart: |
| 664 | ahci_start_engine(ap); |
| 665 | fail: |
Tejun Heo | f15a1da | 2006-05-15 20:57:56 +0900 | [diff] [blame] | 666 | ata_port_printk(ap, KERN_ERR, "softreset failed (%s)\n", reason); |
Tejun Heo | 4658f79 | 2006-03-22 21:07:03 +0900 | [diff] [blame] | 667 | return rc; |
| 668 | } |
| 669 | |
Tejun Heo | 2bf2cb2 | 2006-04-11 22:16:45 +0900 | [diff] [blame] | 670 | static int ahci_hardreset(struct ata_port *ap, unsigned int *class) |
Tejun Heo | 422b759 | 2005-12-19 22:37:17 +0900 | [diff] [blame] | 671 | { |
Tejun Heo | 4bd00f6 | 2006-02-11 16:26:02 +0900 | [diff] [blame] | 672 | int rc; |
| 673 | |
| 674 | DPRINTK("ENTER\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 675 | |
Tejun Heo | e0bfd14 | 2006-01-23 16:31:53 +0900 | [diff] [blame] | 676 | ahci_stop_engine(ap); |
Tejun Heo | 2bf2cb2 | 2006-04-11 22:16:45 +0900 | [diff] [blame] | 677 | rc = sata_std_hardreset(ap, class); |
Tejun Heo | e0bfd14 | 2006-01-23 16:31:53 +0900 | [diff] [blame] | 678 | ahci_start_engine(ap); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 679 | |
Tejun Heo | 81952c5 | 2006-05-15 20:57:47 +0900 | [diff] [blame] | 680 | if (rc == 0 && ata_port_online(ap)) |
Tejun Heo | 4bd00f6 | 2006-02-11 16:26:02 +0900 | [diff] [blame] | 681 | *class = ahci_dev_classify(ap); |
| 682 | if (*class == ATA_DEV_UNKNOWN) |
| 683 | *class = ATA_DEV_NONE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 684 | |
Tejun Heo | 4bd00f6 | 2006-02-11 16:26:02 +0900 | [diff] [blame] | 685 | DPRINTK("EXIT, rc=%d, class=%u\n", rc, *class); |
| 686 | return rc; |
| 687 | } |
| 688 | |
| 689 | static void ahci_postreset(struct ata_port *ap, unsigned int *class) |
| 690 | { |
| 691 | void __iomem *port_mmio = (void __iomem *) ap->ioaddr.cmd_addr; |
| 692 | u32 new_tmp, tmp; |
| 693 | |
| 694 | ata_std_postreset(ap, class); |
Jeff Garzik | 02eaa66 | 2005-11-12 01:32:19 -0500 | [diff] [blame] | 695 | |
| 696 | /* Make sure port's ATAPI bit is set appropriately */ |
| 697 | new_tmp = tmp = readl(port_mmio + PORT_CMD); |
Tejun Heo | 4bd00f6 | 2006-02-11 16:26:02 +0900 | [diff] [blame] | 698 | if (*class == ATA_DEV_ATAPI) |
Jeff Garzik | 02eaa66 | 2005-11-12 01:32:19 -0500 | [diff] [blame] | 699 | new_tmp |= PORT_CMD_ATAPI; |
| 700 | else |
| 701 | new_tmp &= ~PORT_CMD_ATAPI; |
| 702 | if (new_tmp != tmp) { |
| 703 | writel(new_tmp, port_mmio + PORT_CMD); |
| 704 | readl(port_mmio + PORT_CMD); /* flush */ |
| 705 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 706 | } |
| 707 | |
Tejun Heo | 4bd00f6 | 2006-02-11 16:26:02 +0900 | [diff] [blame] | 708 | static int ahci_probe_reset(struct ata_port *ap, unsigned int *classes) |
| 709 | { |
Bastiaan Jacques | bf2af2a | 2006-04-17 14:17:59 +0200 | [diff] [blame] | 710 | if ((ap->flags & AHCI_FLAG_RESET_NEEDS_CLO) && |
| 711 | (ata_busy_wait(ap, ATA_BUSY, 1000) & ATA_BUSY)) { |
| 712 | /* ATA_BUSY hasn't cleared, so send a CLO */ |
| 713 | ahci_clo(ap); |
| 714 | } |
| 715 | |
Tejun Heo | 4658f79 | 2006-03-22 21:07:03 +0900 | [diff] [blame] | 716 | return ata_drive_probe_reset(ap, ata_std_probeinit, |
| 717 | ahci_softreset, ahci_hardreset, |
Tejun Heo | 4bd00f6 | 2006-02-11 16:26:02 +0900 | [diff] [blame] | 718 | ahci_postreset, classes); |
| 719 | } |
| 720 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 721 | static u8 ahci_check_status(struct ata_port *ap) |
| 722 | { |
Al Viro | 1e4f2a9 | 2005-10-21 06:46:02 +0100 | [diff] [blame] | 723 | void __iomem *mmio = (void __iomem *) ap->ioaddr.cmd_addr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 724 | |
| 725 | return readl(mmio + PORT_TFDATA) & 0xFF; |
| 726 | } |
| 727 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 728 | static void ahci_tf_read(struct ata_port *ap, struct ata_taskfile *tf) |
| 729 | { |
| 730 | struct ahci_port_priv *pp = ap->private_data; |
| 731 | u8 *d2h_fis = pp->rx_fis + RX_FIS_D2H_REG; |
| 732 | |
| 733 | ata_tf_from_fis(d2h_fis, tf); |
| 734 | } |
| 735 | |
Jeff Garzik | 828d09d | 2005-11-12 01:27:07 -0500 | [diff] [blame] | 736 | static unsigned int ahci_fill_sg(struct ata_queued_cmd *qc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 737 | { |
| 738 | struct ahci_port_priv *pp = qc->ap->private_data; |
Jeff Garzik | cedc9a4 | 2005-10-05 07:13:30 -0400 | [diff] [blame] | 739 | struct scatterlist *sg; |
| 740 | struct ahci_sg *ahci_sg; |
Jeff Garzik | 828d09d | 2005-11-12 01:27:07 -0500 | [diff] [blame] | 741 | unsigned int n_sg = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 742 | |
| 743 | VPRINTK("ENTER\n"); |
| 744 | |
| 745 | /* |
| 746 | * Next, the S/G list. |
| 747 | */ |
Jeff Garzik | cedc9a4 | 2005-10-05 07:13:30 -0400 | [diff] [blame] | 748 | ahci_sg = pp->cmd_tbl_sg; |
| 749 | ata_for_each_sg(sg, qc) { |
| 750 | dma_addr_t addr = sg_dma_address(sg); |
| 751 | u32 sg_len = sg_dma_len(sg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 752 | |
Jeff Garzik | cedc9a4 | 2005-10-05 07:13:30 -0400 | [diff] [blame] | 753 | ahci_sg->addr = cpu_to_le32(addr & 0xffffffff); |
| 754 | ahci_sg->addr_hi = cpu_to_le32((addr >> 16) >> 16); |
| 755 | ahci_sg->flags_size = cpu_to_le32(sg_len - 1); |
Jeff Garzik | 828d09d | 2005-11-12 01:27:07 -0500 | [diff] [blame] | 756 | |
Jeff Garzik | cedc9a4 | 2005-10-05 07:13:30 -0400 | [diff] [blame] | 757 | ahci_sg++; |
Jeff Garzik | 828d09d | 2005-11-12 01:27:07 -0500 | [diff] [blame] | 758 | n_sg++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 759 | } |
Jeff Garzik | 828d09d | 2005-11-12 01:27:07 -0500 | [diff] [blame] | 760 | |
| 761 | return n_sg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 762 | } |
| 763 | |
| 764 | static void ahci_qc_prep(struct ata_queued_cmd *qc) |
| 765 | { |
Jeff Garzik | a0ea732 | 2005-06-04 01:13:15 -0400 | [diff] [blame] | 766 | struct ata_port *ap = qc->ap; |
| 767 | struct ahci_port_priv *pp = ap->private_data; |
Tejun Heo | cc9278e | 2006-02-10 17:25:47 +0900 | [diff] [blame] | 768 | int is_atapi = is_atapi_taskfile(&qc->tf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 769 | u32 opts; |
| 770 | const u32 cmd_fis_len = 5; /* five dwords */ |
Jeff Garzik | 828d09d | 2005-11-12 01:27:07 -0500 | [diff] [blame] | 771 | unsigned int n_elem; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 772 | |
| 773 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 774 | * Fill in command table information. First, the header, |
| 775 | * a SATA Register - Host to Device command FIS. |
| 776 | */ |
| 777 | ata_tf_to_fis(&qc->tf, pp->cmd_tbl, 0); |
Tejun Heo | cc9278e | 2006-02-10 17:25:47 +0900 | [diff] [blame] | 778 | if (is_atapi) { |
Jeff Garzik | a0ea732 | 2005-06-04 01:13:15 -0400 | [diff] [blame] | 779 | memset(pp->cmd_tbl + AHCI_CMD_TBL_CDB, 0, 32); |
Tejun Heo | 6e7846e | 2006-02-12 23:32:58 +0900 | [diff] [blame] | 780 | memcpy(pp->cmd_tbl + AHCI_CMD_TBL_CDB, qc->cdb, |
| 781 | qc->dev->cdb_len); |
Jeff Garzik | a0ea732 | 2005-06-04 01:13:15 -0400 | [diff] [blame] | 782 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 783 | |
Tejun Heo | cc9278e | 2006-02-10 17:25:47 +0900 | [diff] [blame] | 784 | n_elem = 0; |
| 785 | if (qc->flags & ATA_QCFLAG_DMAMAP) |
| 786 | n_elem = ahci_fill_sg(qc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 787 | |
Tejun Heo | cc9278e | 2006-02-10 17:25:47 +0900 | [diff] [blame] | 788 | /* |
| 789 | * Fill in command slot information. |
| 790 | */ |
| 791 | opts = cmd_fis_len | n_elem << 16; |
| 792 | if (qc->tf.flags & ATA_TFLAG_WRITE) |
| 793 | opts |= AHCI_CMD_WRITE; |
| 794 | if (is_atapi) |
Tejun Heo | 4b10e55 | 2006-03-12 11:25:27 +0900 | [diff] [blame] | 795 | opts |= AHCI_CMD_ATAPI | AHCI_CMD_PREFETCH; |
Jeff Garzik | 828d09d | 2005-11-12 01:27:07 -0500 | [diff] [blame] | 796 | |
Tejun Heo | a42fc65 | 2006-02-11 16:26:02 +0900 | [diff] [blame] | 797 | ahci_fill_cmd_slot(pp, opts); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 798 | } |
| 799 | |
Tejun Heo | 78cd52d | 2006-05-15 20:58:29 +0900 | [diff] [blame] | 800 | static void ahci_error_intr(struct ata_port *ap, u32 irq_stat) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 801 | { |
Tejun Heo | 78cd52d | 2006-05-15 20:58:29 +0900 | [diff] [blame] | 802 | struct ahci_port_priv *pp = ap->private_data; |
| 803 | struct ata_eh_info *ehi = &ap->eh_info; |
| 804 | unsigned int err_mask = 0, action = 0; |
| 805 | struct ata_queued_cmd *qc; |
| 806 | u32 serror; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 807 | |
Tejun Heo | 78cd52d | 2006-05-15 20:58:29 +0900 | [diff] [blame] | 808 | ata_ehi_clear_desc(ehi); |
Jeff Garzik | 9f68a24 | 2005-11-15 14:03:47 -0500 | [diff] [blame] | 809 | |
Tejun Heo | 78cd52d | 2006-05-15 20:58:29 +0900 | [diff] [blame] | 810 | /* AHCI needs SError cleared; otherwise, it might lock up */ |
| 811 | serror = ahci_scr_read(ap, SCR_ERROR); |
| 812 | ahci_scr_write(ap, SCR_ERROR, serror); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 813 | |
Tejun Heo | 78cd52d | 2006-05-15 20:58:29 +0900 | [diff] [blame] | 814 | /* analyze @irq_stat */ |
| 815 | ata_ehi_push_desc(ehi, "irq_stat 0x%08x", irq_stat); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 816 | |
Tejun Heo | 78cd52d | 2006-05-15 20:58:29 +0900 | [diff] [blame] | 817 | if (irq_stat & PORT_IRQ_TF_ERR) |
| 818 | err_mask |= AC_ERR_DEV; |
| 819 | |
| 820 | if (irq_stat & (PORT_IRQ_HBUS_ERR | PORT_IRQ_HBUS_DATA_ERR)) { |
| 821 | err_mask |= AC_ERR_HOST_BUS; |
| 822 | action |= ATA_EH_SOFTRESET; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 823 | } |
| 824 | |
Tejun Heo | 78cd52d | 2006-05-15 20:58:29 +0900 | [diff] [blame] | 825 | if (irq_stat & PORT_IRQ_IF_ERR) { |
| 826 | err_mask |= AC_ERR_ATA_BUS; |
| 827 | action |= ATA_EH_SOFTRESET; |
| 828 | ata_ehi_push_desc(ehi, ", interface fatal error"); |
| 829 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 830 | |
Tejun Heo | 78cd52d | 2006-05-15 20:58:29 +0900 | [diff] [blame] | 831 | if (irq_stat & (PORT_IRQ_CONNECT | PORT_IRQ_PHYRDY)) { |
| 832 | err_mask |= AC_ERR_ATA_BUS; |
| 833 | action |= ATA_EH_SOFTRESET; |
| 834 | ata_ehi_push_desc(ehi, ", %s", irq_stat & PORT_IRQ_CONNECT ? |
| 835 | "connection status changed" : "PHY RDY changed"); |
| 836 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 837 | |
Tejun Heo | 78cd52d | 2006-05-15 20:58:29 +0900 | [diff] [blame] | 838 | if (irq_stat & PORT_IRQ_UNK_FIS) { |
| 839 | u32 *unk = (u32 *)(pp->rx_fis + RX_FIS_UNK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 840 | |
Tejun Heo | 78cd52d | 2006-05-15 20:58:29 +0900 | [diff] [blame] | 841 | err_mask |= AC_ERR_HSM; |
| 842 | action |= ATA_EH_SOFTRESET; |
| 843 | ata_ehi_push_desc(ehi, ", unknown FIS %08x %08x %08x %08x", |
| 844 | unk[0], unk[1], unk[2], unk[3]); |
| 845 | } |
Jeff Garzik | b8f6153 | 2005-08-25 22:01:20 -0400 | [diff] [blame] | 846 | |
Tejun Heo | 78cd52d | 2006-05-15 20:58:29 +0900 | [diff] [blame] | 847 | /* okay, let's hand over to EH */ |
| 848 | ehi->serror |= serror; |
| 849 | ehi->action |= action; |
| 850 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 851 | qc = ata_qc_from_tag(ap, ap->active_tag); |
Tejun Heo | 78cd52d | 2006-05-15 20:58:29 +0900 | [diff] [blame] | 852 | if (qc) |
| 853 | qc->err_mask |= err_mask; |
| 854 | else |
| 855 | ehi->err_mask |= err_mask; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 856 | |
Tejun Heo | 78cd52d | 2006-05-15 20:58:29 +0900 | [diff] [blame] | 857 | if (irq_stat & PORT_IRQ_FREEZE) |
| 858 | ata_port_freeze(ap); |
| 859 | else |
| 860 | ata_port_abort(ap); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 861 | } |
| 862 | |
Tejun Heo | 78cd52d | 2006-05-15 20:58:29 +0900 | [diff] [blame] | 863 | static void ahci_host_intr(struct ata_port *ap) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 864 | { |
Jeff Garzik | ea6ba10 | 2005-08-30 05:18:18 -0400 | [diff] [blame] | 865 | void __iomem *mmio = ap->host_set->mmio_base; |
| 866 | void __iomem *port_mmio = ahci_port_base(mmio, ap->port_no); |
Tejun Heo | 78cd52d | 2006-05-15 20:58:29 +0900 | [diff] [blame] | 867 | struct ata_queued_cmd *qc; |
| 868 | u32 status, ci; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 869 | |
| 870 | status = readl(port_mmio + PORT_IRQ_STAT); |
| 871 | writel(status, port_mmio + PORT_IRQ_STAT); |
| 872 | |
Tejun Heo | 78cd52d | 2006-05-15 20:58:29 +0900 | [diff] [blame] | 873 | if (unlikely(status & PORT_IRQ_ERROR)) { |
| 874 | ahci_error_intr(ap, status); |
| 875 | return; |
| 876 | } |
| 877 | |
| 878 | if ((qc = ata_qc_from_tag(ap, ap->active_tag))) { |
| 879 | ci = readl(port_mmio + PORT_CMD_ISSUE); |
| 880 | if ((ci & 0x1) == 0) { |
Albert Lee | a22e2eb | 2005-12-05 15:38:02 +0800 | [diff] [blame] | 881 | ata_qc_complete(qc); |
Tejun Heo | 78cd52d | 2006-05-15 20:58:29 +0900 | [diff] [blame] | 882 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 883 | } |
| 884 | } |
| 885 | |
Tejun Heo | 2a3917a | 2006-05-15 20:58:30 +0900 | [diff] [blame^] | 886 | /* hmmm... a spurious interupt */ |
| 887 | |
| 888 | /* ignore interim PIO setup fis interrupts */ |
| 889 | if (ata_tag_valid(ap->active_tag)) { |
| 890 | struct ata_queued_cmd *qc = |
| 891 | ata_qc_from_tag(ap, ap->active_tag); |
| 892 | |
| 893 | if (qc && qc->tf.protocol == ATA_PROT_PIO && |
| 894 | (status & PORT_IRQ_PIOS_FIS)) |
| 895 | return; |
| 896 | } |
| 897 | |
Tejun Heo | 78cd52d | 2006-05-15 20:58:29 +0900 | [diff] [blame] | 898 | if (ata_ratelimit()) |
| 899 | ata_port_printk(ap, KERN_INFO, "spurious interrupt " |
| 900 | "(irq_stat 0x%x active_tag %d)\n", |
| 901 | status, ap->active_tag); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 902 | } |
| 903 | |
| 904 | static void ahci_irq_clear(struct ata_port *ap) |
| 905 | { |
| 906 | /* TODO */ |
| 907 | } |
| 908 | |
| 909 | static irqreturn_t ahci_interrupt (int irq, void *dev_instance, struct pt_regs *regs) |
| 910 | { |
| 911 | struct ata_host_set *host_set = dev_instance; |
| 912 | struct ahci_host_priv *hpriv; |
| 913 | unsigned int i, handled = 0; |
Jeff Garzik | ea6ba10 | 2005-08-30 05:18:18 -0400 | [diff] [blame] | 914 | void __iomem *mmio; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 915 | u32 irq_stat, irq_ack = 0; |
| 916 | |
| 917 | VPRINTK("ENTER\n"); |
| 918 | |
| 919 | hpriv = host_set->private_data; |
| 920 | mmio = host_set->mmio_base; |
| 921 | |
| 922 | /* sigh. 0xffffffff is a valid return from h/w */ |
| 923 | irq_stat = readl(mmio + HOST_IRQ_STAT); |
| 924 | irq_stat &= hpriv->port_map; |
| 925 | if (!irq_stat) |
| 926 | return IRQ_NONE; |
| 927 | |
| 928 | spin_lock(&host_set->lock); |
| 929 | |
| 930 | for (i = 0; i < host_set->n_ports; i++) { |
| 931 | struct ata_port *ap; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 932 | |
Jeff Garzik | 67846b3 | 2005-10-05 02:58:32 -0400 | [diff] [blame] | 933 | if (!(irq_stat & (1 << i))) |
| 934 | continue; |
| 935 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 936 | ap = host_set->ports[i]; |
Jeff Garzik | 67846b3 | 2005-10-05 02:58:32 -0400 | [diff] [blame] | 937 | if (ap) { |
Tejun Heo | 78cd52d | 2006-05-15 20:58:29 +0900 | [diff] [blame] | 938 | ahci_host_intr(ap); |
Jeff Garzik | 67846b3 | 2005-10-05 02:58:32 -0400 | [diff] [blame] | 939 | VPRINTK("port %u\n", i); |
| 940 | } else { |
| 941 | VPRINTK("port %u (no irq)\n", i); |
Tejun Heo | 6971ed1 | 2006-03-11 12:47:54 +0900 | [diff] [blame] | 942 | if (ata_ratelimit()) |
| 943 | dev_printk(KERN_WARNING, host_set->dev, |
Jeff Garzik | a9524a7 | 2005-10-30 14:39:11 -0500 | [diff] [blame] | 944 | "interrupt on disabled port %u\n", i); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 945 | } |
Jeff Garzik | 67846b3 | 2005-10-05 02:58:32 -0400 | [diff] [blame] | 946 | |
| 947 | irq_ack |= (1 << i); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 948 | } |
| 949 | |
| 950 | if (irq_ack) { |
| 951 | writel(irq_ack, mmio + HOST_IRQ_STAT); |
| 952 | handled = 1; |
| 953 | } |
| 954 | |
Tejun Heo | 78cd52d | 2006-05-15 20:58:29 +0900 | [diff] [blame] | 955 | spin_unlock(&host_set->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 956 | |
| 957 | VPRINTK("EXIT\n"); |
| 958 | |
| 959 | return IRQ_RETVAL(handled); |
| 960 | } |
| 961 | |
Tejun Heo | 9a3d9eb | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 962 | static unsigned int ahci_qc_issue(struct ata_queued_cmd *qc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 963 | { |
| 964 | struct ata_port *ap = qc->ap; |
Jeff Garzik | ea6ba10 | 2005-08-30 05:18:18 -0400 | [diff] [blame] | 965 | void __iomem *port_mmio = (void __iomem *) ap->ioaddr.cmd_addr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 966 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 967 | writel(1, port_mmio + PORT_CMD_ISSUE); |
| 968 | readl(port_mmio + PORT_CMD_ISSUE); /* flush */ |
| 969 | |
| 970 | return 0; |
| 971 | } |
| 972 | |
Tejun Heo | 78cd52d | 2006-05-15 20:58:29 +0900 | [diff] [blame] | 973 | static void ahci_freeze(struct ata_port *ap) |
| 974 | { |
| 975 | void __iomem *mmio = ap->host_set->mmio_base; |
| 976 | void __iomem *port_mmio = ahci_port_base(mmio, ap->port_no); |
| 977 | |
| 978 | /* turn IRQ off */ |
| 979 | writel(0, port_mmio + PORT_IRQ_MASK); |
| 980 | } |
| 981 | |
| 982 | static void ahci_thaw(struct ata_port *ap) |
| 983 | { |
| 984 | void __iomem *mmio = ap->host_set->mmio_base; |
| 985 | void __iomem *port_mmio = ahci_port_base(mmio, ap->port_no); |
| 986 | u32 tmp; |
| 987 | |
| 988 | /* clear IRQ */ |
| 989 | tmp = readl(port_mmio + PORT_IRQ_STAT); |
| 990 | writel(tmp, port_mmio + PORT_IRQ_STAT); |
| 991 | writel(1 << ap->id, mmio + HOST_IRQ_STAT); |
| 992 | |
| 993 | /* turn IRQ back on */ |
| 994 | writel(DEF_PORT_IRQ, port_mmio + PORT_IRQ_MASK); |
| 995 | } |
| 996 | |
| 997 | static void ahci_error_handler(struct ata_port *ap) |
| 998 | { |
| 999 | if (!(ap->flags & ATA_FLAG_FROZEN)) { |
| 1000 | /* restart engine */ |
| 1001 | ahci_stop_engine(ap); |
| 1002 | ahci_start_engine(ap); |
| 1003 | } |
| 1004 | |
| 1005 | /* perform recovery */ |
| 1006 | ata_do_eh(ap, ahci_softreset, ahci_hardreset, ahci_postreset); |
| 1007 | } |
| 1008 | |
| 1009 | static void ahci_post_internal_cmd(struct ata_queued_cmd *qc) |
| 1010 | { |
| 1011 | struct ata_port *ap = qc->ap; |
| 1012 | |
| 1013 | if (qc->flags & ATA_QCFLAG_FAILED) |
| 1014 | qc->err_mask |= AC_ERR_OTHER; |
| 1015 | |
| 1016 | if (qc->err_mask) { |
| 1017 | /* make DMA engine forget about the failed command */ |
| 1018 | ahci_stop_engine(ap); |
| 1019 | ahci_start_engine(ap); |
| 1020 | } |
| 1021 | } |
| 1022 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1023 | static void ahci_setup_port(struct ata_ioports *port, unsigned long base, |
| 1024 | unsigned int port_idx) |
| 1025 | { |
| 1026 | VPRINTK("ENTER, base==0x%lx, port_idx %u\n", base, port_idx); |
| 1027 | base = ahci_port_base_ul(base, port_idx); |
| 1028 | VPRINTK("base now==0x%lx\n", base); |
| 1029 | |
| 1030 | port->cmd_addr = base; |
| 1031 | port->scr_addr = base + PORT_SCR; |
| 1032 | |
| 1033 | VPRINTK("EXIT\n"); |
| 1034 | } |
| 1035 | |
| 1036 | static int ahci_host_init(struct ata_probe_ent *probe_ent) |
| 1037 | { |
| 1038 | struct ahci_host_priv *hpriv = probe_ent->private_data; |
| 1039 | struct pci_dev *pdev = to_pci_dev(probe_ent->dev); |
| 1040 | void __iomem *mmio = probe_ent->mmio_base; |
| 1041 | u32 tmp, cap_save; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1042 | unsigned int i, j, using_dac; |
| 1043 | int rc; |
| 1044 | void __iomem *port_mmio; |
| 1045 | |
| 1046 | cap_save = readl(mmio + HOST_CAP); |
| 1047 | cap_save &= ( (1<<28) | (1<<17) ); |
| 1048 | cap_save |= (1 << 27); |
| 1049 | |
| 1050 | /* global controller reset */ |
| 1051 | tmp = readl(mmio + HOST_CTL); |
| 1052 | if ((tmp & HOST_RESET) == 0) { |
| 1053 | writel(tmp | HOST_RESET, mmio + HOST_CTL); |
| 1054 | readl(mmio + HOST_CTL); /* flush */ |
| 1055 | } |
| 1056 | |
| 1057 | /* reset must complete within 1 second, or |
| 1058 | * the hardware should be considered fried. |
| 1059 | */ |
| 1060 | ssleep(1); |
| 1061 | |
| 1062 | tmp = readl(mmio + HOST_CTL); |
| 1063 | if (tmp & HOST_RESET) { |
Jeff Garzik | a9524a7 | 2005-10-30 14:39:11 -0500 | [diff] [blame] | 1064 | dev_printk(KERN_ERR, &pdev->dev, |
| 1065 | "controller reset failed (0x%x)\n", tmp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1066 | return -EIO; |
| 1067 | } |
| 1068 | |
| 1069 | writel(HOST_AHCI_EN, mmio + HOST_CTL); |
| 1070 | (void) readl(mmio + HOST_CTL); /* flush */ |
| 1071 | writel(cap_save, mmio + HOST_CAP); |
| 1072 | writel(0xf, mmio + HOST_PORTS_IMPL); |
| 1073 | (void) readl(mmio + HOST_PORTS_IMPL); /* flush */ |
| 1074 | |
Jeff Garzik | bd12097 | 2006-01-29 02:47:03 -0500 | [diff] [blame] | 1075 | if (pdev->vendor == PCI_VENDOR_ID_INTEL) { |
| 1076 | u16 tmp16; |
| 1077 | |
| 1078 | pci_read_config_word(pdev, 0x92, &tmp16); |
| 1079 | tmp16 |= 0xf; |
| 1080 | pci_write_config_word(pdev, 0x92, tmp16); |
| 1081 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1082 | |
| 1083 | hpriv->cap = readl(mmio + HOST_CAP); |
| 1084 | hpriv->port_map = readl(mmio + HOST_PORTS_IMPL); |
| 1085 | probe_ent->n_ports = (hpriv->cap & 0x1f) + 1; |
| 1086 | |
| 1087 | VPRINTK("cap 0x%x port_map 0x%x n_ports %d\n", |
| 1088 | hpriv->cap, hpriv->port_map, probe_ent->n_ports); |
| 1089 | |
| 1090 | using_dac = hpriv->cap & HOST_CAP_64; |
| 1091 | if (using_dac && |
| 1092 | !pci_set_dma_mask(pdev, DMA_64BIT_MASK)) { |
| 1093 | rc = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK); |
| 1094 | if (rc) { |
| 1095 | rc = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK); |
| 1096 | if (rc) { |
Jeff Garzik | a9524a7 | 2005-10-30 14:39:11 -0500 | [diff] [blame] | 1097 | dev_printk(KERN_ERR, &pdev->dev, |
| 1098 | "64-bit DMA enable failed\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1099 | return rc; |
| 1100 | } |
| 1101 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1102 | } else { |
| 1103 | rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK); |
| 1104 | if (rc) { |
Jeff Garzik | a9524a7 | 2005-10-30 14:39:11 -0500 | [diff] [blame] | 1105 | dev_printk(KERN_ERR, &pdev->dev, |
| 1106 | "32-bit DMA enable failed\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1107 | return rc; |
| 1108 | } |
| 1109 | rc = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK); |
| 1110 | if (rc) { |
Jeff Garzik | a9524a7 | 2005-10-30 14:39:11 -0500 | [diff] [blame] | 1111 | dev_printk(KERN_ERR, &pdev->dev, |
| 1112 | "32-bit consistent DMA enable failed\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1113 | return rc; |
| 1114 | } |
| 1115 | } |
| 1116 | |
| 1117 | for (i = 0; i < probe_ent->n_ports; i++) { |
| 1118 | #if 0 /* BIOSen initialize this incorrectly */ |
| 1119 | if (!(hpriv->port_map & (1 << i))) |
| 1120 | continue; |
| 1121 | #endif |
| 1122 | |
| 1123 | port_mmio = ahci_port_base(mmio, i); |
| 1124 | VPRINTK("mmio %p port_mmio %p\n", mmio, port_mmio); |
| 1125 | |
| 1126 | ahci_setup_port(&probe_ent->port[i], |
| 1127 | (unsigned long) mmio, i); |
| 1128 | |
| 1129 | /* make sure port is not active */ |
| 1130 | tmp = readl(port_mmio + PORT_CMD); |
| 1131 | VPRINTK("PORT_CMD 0x%x\n", tmp); |
| 1132 | if (tmp & (PORT_CMD_LIST_ON | PORT_CMD_FIS_ON | |
| 1133 | PORT_CMD_FIS_RX | PORT_CMD_START)) { |
| 1134 | tmp &= ~(PORT_CMD_LIST_ON | PORT_CMD_FIS_ON | |
| 1135 | PORT_CMD_FIS_RX | PORT_CMD_START); |
| 1136 | writel(tmp, port_mmio + PORT_CMD); |
| 1137 | readl(port_mmio + PORT_CMD); /* flush */ |
| 1138 | |
| 1139 | /* spec says 500 msecs for each bit, so |
| 1140 | * this is slightly incorrect. |
| 1141 | */ |
| 1142 | msleep(500); |
| 1143 | } |
| 1144 | |
| 1145 | writel(PORT_CMD_SPIN_UP, port_mmio + PORT_CMD); |
| 1146 | |
| 1147 | j = 0; |
| 1148 | while (j < 100) { |
| 1149 | msleep(10); |
| 1150 | tmp = readl(port_mmio + PORT_SCR_STAT); |
| 1151 | if ((tmp & 0xf) == 0x3) |
| 1152 | break; |
| 1153 | j++; |
| 1154 | } |
| 1155 | |
| 1156 | tmp = readl(port_mmio + PORT_SCR_ERR); |
| 1157 | VPRINTK("PORT_SCR_ERR 0x%x\n", tmp); |
| 1158 | writel(tmp, port_mmio + PORT_SCR_ERR); |
| 1159 | |
| 1160 | /* ack any pending irq events for this port */ |
| 1161 | tmp = readl(port_mmio + PORT_IRQ_STAT); |
| 1162 | VPRINTK("PORT_IRQ_STAT 0x%x\n", tmp); |
| 1163 | if (tmp) |
| 1164 | writel(tmp, port_mmio + PORT_IRQ_STAT); |
| 1165 | |
| 1166 | writel(1 << i, mmio + HOST_IRQ_STAT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1167 | } |
| 1168 | |
| 1169 | tmp = readl(mmio + HOST_CTL); |
| 1170 | VPRINTK("HOST_CTL 0x%x\n", tmp); |
| 1171 | writel(tmp | HOST_IRQ_EN, mmio + HOST_CTL); |
| 1172 | tmp = readl(mmio + HOST_CTL); |
| 1173 | VPRINTK("HOST_CTL 0x%x\n", tmp); |
| 1174 | |
| 1175 | pci_set_master(pdev); |
| 1176 | |
| 1177 | return 0; |
| 1178 | } |
| 1179 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1180 | static void ahci_print_info(struct ata_probe_ent *probe_ent) |
| 1181 | { |
| 1182 | struct ahci_host_priv *hpriv = probe_ent->private_data; |
| 1183 | struct pci_dev *pdev = to_pci_dev(probe_ent->dev); |
Jeff Garzik | ea6ba10 | 2005-08-30 05:18:18 -0400 | [diff] [blame] | 1184 | void __iomem *mmio = probe_ent->mmio_base; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1185 | u32 vers, cap, impl, speed; |
| 1186 | const char *speed_s; |
| 1187 | u16 cc; |
| 1188 | const char *scc_s; |
| 1189 | |
| 1190 | vers = readl(mmio + HOST_VERSION); |
| 1191 | cap = hpriv->cap; |
| 1192 | impl = hpriv->port_map; |
| 1193 | |
| 1194 | speed = (cap >> 20) & 0xf; |
| 1195 | if (speed == 1) |
| 1196 | speed_s = "1.5"; |
| 1197 | else if (speed == 2) |
| 1198 | speed_s = "3"; |
| 1199 | else |
| 1200 | speed_s = "?"; |
| 1201 | |
| 1202 | pci_read_config_word(pdev, 0x0a, &cc); |
| 1203 | if (cc == 0x0101) |
| 1204 | scc_s = "IDE"; |
| 1205 | else if (cc == 0x0106) |
| 1206 | scc_s = "SATA"; |
| 1207 | else if (cc == 0x0104) |
| 1208 | scc_s = "RAID"; |
| 1209 | else |
| 1210 | scc_s = "unknown"; |
| 1211 | |
Jeff Garzik | a9524a7 | 2005-10-30 14:39:11 -0500 | [diff] [blame] | 1212 | dev_printk(KERN_INFO, &pdev->dev, |
| 1213 | "AHCI %02x%02x.%02x%02x " |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1214 | "%u slots %u ports %s Gbps 0x%x impl %s mode\n" |
| 1215 | , |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1216 | |
| 1217 | (vers >> 24) & 0xff, |
| 1218 | (vers >> 16) & 0xff, |
| 1219 | (vers >> 8) & 0xff, |
| 1220 | vers & 0xff, |
| 1221 | |
| 1222 | ((cap >> 8) & 0x1f) + 1, |
| 1223 | (cap & 0x1f) + 1, |
| 1224 | speed_s, |
| 1225 | impl, |
| 1226 | scc_s); |
| 1227 | |
Jeff Garzik | a9524a7 | 2005-10-30 14:39:11 -0500 | [diff] [blame] | 1228 | dev_printk(KERN_INFO, &pdev->dev, |
| 1229 | "flags: " |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1230 | "%s%s%s%s%s%s" |
| 1231 | "%s%s%s%s%s%s%s\n" |
| 1232 | , |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1233 | |
| 1234 | cap & (1 << 31) ? "64bit " : "", |
| 1235 | cap & (1 << 30) ? "ncq " : "", |
| 1236 | cap & (1 << 28) ? "ilck " : "", |
| 1237 | cap & (1 << 27) ? "stag " : "", |
| 1238 | cap & (1 << 26) ? "pm " : "", |
| 1239 | cap & (1 << 25) ? "led " : "", |
| 1240 | |
| 1241 | cap & (1 << 24) ? "clo " : "", |
| 1242 | cap & (1 << 19) ? "nz " : "", |
| 1243 | cap & (1 << 18) ? "only " : "", |
| 1244 | cap & (1 << 17) ? "pmp " : "", |
| 1245 | cap & (1 << 15) ? "pio " : "", |
| 1246 | cap & (1 << 14) ? "slum " : "", |
| 1247 | cap & (1 << 13) ? "part " : "" |
| 1248 | ); |
| 1249 | } |
| 1250 | |
| 1251 | static int ahci_init_one (struct pci_dev *pdev, const struct pci_device_id *ent) |
| 1252 | { |
| 1253 | static int printed_version; |
| 1254 | struct ata_probe_ent *probe_ent = NULL; |
| 1255 | struct ahci_host_priv *hpriv; |
| 1256 | unsigned long base; |
Jeff Garzik | ea6ba10 | 2005-08-30 05:18:18 -0400 | [diff] [blame] | 1257 | void __iomem *mmio_base; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1258 | unsigned int board_idx = (unsigned int) ent->driver_data; |
Jeff Garzik | 907f467 | 2005-05-12 15:03:42 -0400 | [diff] [blame] | 1259 | int have_msi, pci_dev_busy = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1260 | int rc; |
| 1261 | |
| 1262 | VPRINTK("ENTER\n"); |
| 1263 | |
| 1264 | if (!printed_version++) |
Jeff Garzik | a9524a7 | 2005-10-30 14:39:11 -0500 | [diff] [blame] | 1265 | dev_printk(KERN_DEBUG, &pdev->dev, "version " DRV_VERSION "\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1266 | |
| 1267 | rc = pci_enable_device(pdev); |
| 1268 | if (rc) |
| 1269 | return rc; |
| 1270 | |
| 1271 | rc = pci_request_regions(pdev, DRV_NAME); |
| 1272 | if (rc) { |
| 1273 | pci_dev_busy = 1; |
| 1274 | goto err_out; |
| 1275 | } |
| 1276 | |
Jeff Garzik | 907f467 | 2005-05-12 15:03:42 -0400 | [diff] [blame] | 1277 | if (pci_enable_msi(pdev) == 0) |
| 1278 | have_msi = 1; |
| 1279 | else { |
| 1280 | pci_intx(pdev, 1); |
| 1281 | have_msi = 0; |
| 1282 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1283 | |
| 1284 | probe_ent = kmalloc(sizeof(*probe_ent), GFP_KERNEL); |
| 1285 | if (probe_ent == NULL) { |
| 1286 | rc = -ENOMEM; |
Jeff Garzik | 907f467 | 2005-05-12 15:03:42 -0400 | [diff] [blame] | 1287 | goto err_out_msi; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1288 | } |
| 1289 | |
| 1290 | memset(probe_ent, 0, sizeof(*probe_ent)); |
| 1291 | probe_ent->dev = pci_dev_to_dev(pdev); |
| 1292 | INIT_LIST_HEAD(&probe_ent->node); |
| 1293 | |
Jeff Garzik | 374b187 | 2005-08-30 05:42:52 -0400 | [diff] [blame] | 1294 | mmio_base = pci_iomap(pdev, AHCI_PCI_BAR, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1295 | if (mmio_base == NULL) { |
| 1296 | rc = -ENOMEM; |
| 1297 | goto err_out_free_ent; |
| 1298 | } |
| 1299 | base = (unsigned long) mmio_base; |
| 1300 | |
| 1301 | hpriv = kmalloc(sizeof(*hpriv), GFP_KERNEL); |
| 1302 | if (!hpriv) { |
| 1303 | rc = -ENOMEM; |
| 1304 | goto err_out_iounmap; |
| 1305 | } |
| 1306 | memset(hpriv, 0, sizeof(*hpriv)); |
| 1307 | |
| 1308 | probe_ent->sht = ahci_port_info[board_idx].sht; |
| 1309 | probe_ent->host_flags = ahci_port_info[board_idx].host_flags; |
| 1310 | probe_ent->pio_mask = ahci_port_info[board_idx].pio_mask; |
| 1311 | probe_ent->udma_mask = ahci_port_info[board_idx].udma_mask; |
| 1312 | probe_ent->port_ops = ahci_port_info[board_idx].port_ops; |
| 1313 | |
| 1314 | probe_ent->irq = pdev->irq; |
| 1315 | probe_ent->irq_flags = SA_SHIRQ; |
| 1316 | probe_ent->mmio_base = mmio_base; |
| 1317 | probe_ent->private_data = hpriv; |
| 1318 | |
Jeff Garzik | 4b0060f | 2005-06-04 00:50:22 -0400 | [diff] [blame] | 1319 | if (have_msi) |
| 1320 | hpriv->flags |= AHCI_FLAG_MSI; |
Jeff Garzik | 907f467 | 2005-05-12 15:03:42 -0400 | [diff] [blame] | 1321 | |
Jeff Garzik | bd12097 | 2006-01-29 02:47:03 -0500 | [diff] [blame] | 1322 | /* JMicron-specific fixup: make sure we're in AHCI mode */ |
| 1323 | if (pdev->vendor == 0x197b) |
| 1324 | pci_write_config_byte(pdev, 0x41, 0xa1); |
| 1325 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1326 | /* initialize adapter */ |
| 1327 | rc = ahci_host_init(probe_ent); |
| 1328 | if (rc) |
| 1329 | goto err_out_hpriv; |
| 1330 | |
| 1331 | ahci_print_info(probe_ent); |
| 1332 | |
| 1333 | /* FIXME: check ata_device_add return value */ |
| 1334 | ata_device_add(probe_ent); |
| 1335 | kfree(probe_ent); |
| 1336 | |
| 1337 | return 0; |
| 1338 | |
| 1339 | err_out_hpriv: |
| 1340 | kfree(hpriv); |
| 1341 | err_out_iounmap: |
Jeff Garzik | 374b187 | 2005-08-30 05:42:52 -0400 | [diff] [blame] | 1342 | pci_iounmap(pdev, mmio_base); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1343 | err_out_free_ent: |
| 1344 | kfree(probe_ent); |
Jeff Garzik | 907f467 | 2005-05-12 15:03:42 -0400 | [diff] [blame] | 1345 | err_out_msi: |
| 1346 | if (have_msi) |
| 1347 | pci_disable_msi(pdev); |
| 1348 | else |
| 1349 | pci_intx(pdev, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1350 | pci_release_regions(pdev); |
| 1351 | err_out: |
| 1352 | if (!pci_dev_busy) |
| 1353 | pci_disable_device(pdev); |
| 1354 | return rc; |
| 1355 | } |
| 1356 | |
Jeff Garzik | 907f467 | 2005-05-12 15:03:42 -0400 | [diff] [blame] | 1357 | static void ahci_remove_one (struct pci_dev *pdev) |
| 1358 | { |
| 1359 | struct device *dev = pci_dev_to_dev(pdev); |
| 1360 | struct ata_host_set *host_set = dev_get_drvdata(dev); |
| 1361 | struct ahci_host_priv *hpriv = host_set->private_data; |
| 1362 | struct ata_port *ap; |
| 1363 | unsigned int i; |
| 1364 | int have_msi; |
| 1365 | |
| 1366 | for (i = 0; i < host_set->n_ports; i++) { |
| 1367 | ap = host_set->ports[i]; |
| 1368 | |
| 1369 | scsi_remove_host(ap->host); |
| 1370 | } |
| 1371 | |
Jeff Garzik | 4b0060f | 2005-06-04 00:50:22 -0400 | [diff] [blame] | 1372 | have_msi = hpriv->flags & AHCI_FLAG_MSI; |
Jeff Garzik | 907f467 | 2005-05-12 15:03:42 -0400 | [diff] [blame] | 1373 | free_irq(host_set->irq, host_set); |
Jeff Garzik | 907f467 | 2005-05-12 15:03:42 -0400 | [diff] [blame] | 1374 | |
| 1375 | for (i = 0; i < host_set->n_ports; i++) { |
| 1376 | ap = host_set->ports[i]; |
| 1377 | |
| 1378 | ata_scsi_release(ap->host); |
| 1379 | scsi_host_put(ap->host); |
| 1380 | } |
| 1381 | |
Jeff Garzik | e005f01 | 2005-08-30 04:18:28 -0400 | [diff] [blame] | 1382 | kfree(hpriv); |
Jeff Garzik | 374b187 | 2005-08-30 05:42:52 -0400 | [diff] [blame] | 1383 | pci_iounmap(pdev, host_set->mmio_base); |
Jeff Garzik | ead5de9 | 2005-05-31 11:53:57 -0400 | [diff] [blame] | 1384 | kfree(host_set); |
| 1385 | |
Jeff Garzik | 907f467 | 2005-05-12 15:03:42 -0400 | [diff] [blame] | 1386 | if (have_msi) |
| 1387 | pci_disable_msi(pdev); |
| 1388 | else |
| 1389 | pci_intx(pdev, 0); |
| 1390 | pci_release_regions(pdev); |
Jeff Garzik | 907f467 | 2005-05-12 15:03:42 -0400 | [diff] [blame] | 1391 | pci_disable_device(pdev); |
| 1392 | dev_set_drvdata(dev, NULL); |
| 1393 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1394 | |
| 1395 | static int __init ahci_init(void) |
| 1396 | { |
| 1397 | return pci_module_init(&ahci_pci_driver); |
| 1398 | } |
| 1399 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1400 | static void __exit ahci_exit(void) |
| 1401 | { |
| 1402 | pci_unregister_driver(&ahci_pci_driver); |
| 1403 | } |
| 1404 | |
| 1405 | |
| 1406 | MODULE_AUTHOR("Jeff Garzik"); |
| 1407 | MODULE_DESCRIPTION("AHCI SATA low-level driver"); |
| 1408 | MODULE_LICENSE("GPL"); |
| 1409 | MODULE_DEVICE_TABLE(pci, ahci_pci_tbl); |
Jeff Garzik | 6885433 | 2005-08-23 02:53:51 -0400 | [diff] [blame] | 1410 | MODULE_VERSION(DRV_VERSION); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1411 | |
| 1412 | module_init(ahci_init); |
| 1413 | module_exit(ahci_exit); |