Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * sata_svw.c - ServerWorks / Apple K2 SATA |
| 3 | * |
| 4 | * Maintained by: Benjamin Herrenschmidt <benh@kernel.crashing.org> and |
| 5 | * Jeff Garzik <jgarzik@pobox.com> |
| 6 | * Please ALWAYS copy linux-ide@vger.kernel.org |
| 7 | * on emails. |
| 8 | * |
| 9 | * Copyright 2003 Benjamin Herrenschmidt <benh@kernel.crashing.org> |
| 10 | * |
| 11 | * Bits from Jeff Garzik, Copyright RedHat, Inc. |
| 12 | * |
| 13 | * This driver probably works with non-Apple versions of the |
| 14 | * Broadcom chipset... |
| 15 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 16 | * |
Jeff Garzik | af36d7f | 2005-08-28 20:18:39 -0400 | [diff] [blame] | 17 | * This program is free software; you can redistribute it and/or modify |
| 18 | * it under the terms of the GNU General Public License as published by |
| 19 | * the Free Software Foundation; either version 2, or (at your option) |
| 20 | * any later version. |
| 21 | * |
| 22 | * This program is distributed in the hope that it will be useful, |
| 23 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 24 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 25 | * GNU General Public License for more details. |
| 26 | * |
| 27 | * You should have received a copy of the GNU General Public License |
| 28 | * along with this program; see the file COPYING. If not, write to |
| 29 | * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. |
| 30 | * |
| 31 | * |
| 32 | * libata documentation is available via 'make {ps|pdf}docs', |
| 33 | * as Documentation/DocBook/libata.* |
| 34 | * |
| 35 | * Hardware documentation available under NDA. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 36 | * |
| 37 | */ |
| 38 | |
| 39 | #include <linux/config.h> |
| 40 | #include <linux/kernel.h> |
| 41 | #include <linux/module.h> |
| 42 | #include <linux/pci.h> |
| 43 | #include <linux/init.h> |
| 44 | #include <linux/blkdev.h> |
| 45 | #include <linux/delay.h> |
| 46 | #include <linux/interrupt.h> |
Jeff Garzik | a9524a7 | 2005-10-30 14:39:11 -0500 | [diff] [blame] | 47 | #include <linux/device.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 48 | #include <scsi/scsi_host.h> |
| 49 | #include <linux/libata.h> |
| 50 | |
| 51 | #ifdef CONFIG_PPC_OF |
| 52 | #include <asm/prom.h> |
| 53 | #include <asm/pci-bridge.h> |
| 54 | #endif /* CONFIG_PPC_OF */ |
| 55 | |
| 56 | #define DRV_NAME "sata_svw" |
Jeff Garzik | af64371 | 2006-04-02 20:41:36 -0400 | [diff] [blame] | 57 | #define DRV_VERSION "1.8" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 58 | |
Jeff Garzik | 55cca65 | 2006-03-21 22:14:17 -0500 | [diff] [blame] | 59 | enum { |
| 60 | /* Taskfile registers offsets */ |
| 61 | K2_SATA_TF_CMD_OFFSET = 0x00, |
| 62 | K2_SATA_TF_DATA_OFFSET = 0x00, |
| 63 | K2_SATA_TF_ERROR_OFFSET = 0x04, |
| 64 | K2_SATA_TF_NSECT_OFFSET = 0x08, |
| 65 | K2_SATA_TF_LBAL_OFFSET = 0x0c, |
| 66 | K2_SATA_TF_LBAM_OFFSET = 0x10, |
| 67 | K2_SATA_TF_LBAH_OFFSET = 0x14, |
| 68 | K2_SATA_TF_DEVICE_OFFSET = 0x18, |
| 69 | K2_SATA_TF_CMDSTAT_OFFSET = 0x1c, |
| 70 | K2_SATA_TF_CTL_OFFSET = 0x20, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 71 | |
Jeff Garzik | 55cca65 | 2006-03-21 22:14:17 -0500 | [diff] [blame] | 72 | /* DMA base */ |
| 73 | K2_SATA_DMA_CMD_OFFSET = 0x30, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 74 | |
Jeff Garzik | 55cca65 | 2006-03-21 22:14:17 -0500 | [diff] [blame] | 75 | /* SCRs base */ |
| 76 | K2_SATA_SCR_STATUS_OFFSET = 0x40, |
| 77 | K2_SATA_SCR_ERROR_OFFSET = 0x44, |
| 78 | K2_SATA_SCR_CONTROL_OFFSET = 0x48, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 79 | |
Jeff Garzik | 55cca65 | 2006-03-21 22:14:17 -0500 | [diff] [blame] | 80 | /* Others */ |
| 81 | K2_SATA_SICR1_OFFSET = 0x80, |
| 82 | K2_SATA_SICR2_OFFSET = 0x84, |
| 83 | K2_SATA_SIM_OFFSET = 0x88, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 84 | |
Jeff Garzik | 55cca65 | 2006-03-21 22:14:17 -0500 | [diff] [blame] | 85 | /* Port stride */ |
| 86 | K2_SATA_PORT_OFFSET = 0x100, |
| 87 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 88 | |
Jeff Garzik | ac19bff | 2005-10-29 13:58:21 -0400 | [diff] [blame] | 89 | static u8 k2_stat_check_status(struct ata_port *ap); |
| 90 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 91 | |
| 92 | static u32 k2_sata_scr_read (struct ata_port *ap, unsigned int sc_reg) |
| 93 | { |
| 94 | if (sc_reg > SCR_CONTROL) |
| 95 | return 0xffffffffU; |
| 96 | return readl((void *) ap->ioaddr.scr_addr + (sc_reg * 4)); |
| 97 | } |
| 98 | |
| 99 | |
| 100 | static void k2_sata_scr_write (struct ata_port *ap, unsigned int sc_reg, |
| 101 | u32 val) |
| 102 | { |
| 103 | if (sc_reg > SCR_CONTROL) |
| 104 | return; |
| 105 | writel(val, (void *) ap->ioaddr.scr_addr + (sc_reg * 4)); |
| 106 | } |
| 107 | |
| 108 | |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 109 | static void k2_sata_tf_load(struct ata_port *ap, const struct ata_taskfile *tf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 110 | { |
| 111 | struct ata_ioports *ioaddr = &ap->ioaddr; |
| 112 | unsigned int is_addr = tf->flags & ATA_TFLAG_ISADDR; |
| 113 | |
| 114 | if (tf->ctl != ap->last_ctl) { |
| 115 | writeb(tf->ctl, ioaddr->ctl_addr); |
| 116 | ap->last_ctl = tf->ctl; |
| 117 | ata_wait_idle(ap); |
| 118 | } |
| 119 | if (is_addr && (tf->flags & ATA_TFLAG_LBA48)) { |
| 120 | writew(tf->feature | (((u16)tf->hob_feature) << 8), ioaddr->feature_addr); |
| 121 | writew(tf->nsect | (((u16)tf->hob_nsect) << 8), ioaddr->nsect_addr); |
| 122 | writew(tf->lbal | (((u16)tf->hob_lbal) << 8), ioaddr->lbal_addr); |
| 123 | writew(tf->lbam | (((u16)tf->hob_lbam) << 8), ioaddr->lbam_addr); |
| 124 | writew(tf->lbah | (((u16)tf->hob_lbah) << 8), ioaddr->lbah_addr); |
| 125 | } else if (is_addr) { |
| 126 | writew(tf->feature, ioaddr->feature_addr); |
| 127 | writew(tf->nsect, ioaddr->nsect_addr); |
| 128 | writew(tf->lbal, ioaddr->lbal_addr); |
| 129 | writew(tf->lbam, ioaddr->lbam_addr); |
| 130 | writew(tf->lbah, ioaddr->lbah_addr); |
| 131 | } |
| 132 | |
| 133 | if (tf->flags & ATA_TFLAG_DEVICE) |
| 134 | writeb(tf->device, ioaddr->device_addr); |
| 135 | |
| 136 | ata_wait_idle(ap); |
| 137 | } |
| 138 | |
| 139 | |
| 140 | static void k2_sata_tf_read(struct ata_port *ap, struct ata_taskfile *tf) |
| 141 | { |
| 142 | struct ata_ioports *ioaddr = &ap->ioaddr; |
Jeff Garzik | ac19bff | 2005-10-29 13:58:21 -0400 | [diff] [blame] | 143 | u16 nsect, lbal, lbam, lbah, feature; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 144 | |
Jeff Garzik | ac19bff | 2005-10-29 13:58:21 -0400 | [diff] [blame] | 145 | tf->command = k2_stat_check_status(ap); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 146 | tf->device = readw(ioaddr->device_addr); |
Jeff Garzik | ac19bff | 2005-10-29 13:58:21 -0400 | [diff] [blame] | 147 | feature = readw(ioaddr->error_addr); |
| 148 | nsect = readw(ioaddr->nsect_addr); |
| 149 | lbal = readw(ioaddr->lbal_addr); |
| 150 | lbam = readw(ioaddr->lbam_addr); |
| 151 | lbah = readw(ioaddr->lbah_addr); |
| 152 | |
| 153 | tf->feature = feature; |
| 154 | tf->nsect = nsect; |
| 155 | tf->lbal = lbal; |
| 156 | tf->lbam = lbam; |
| 157 | tf->lbah = lbah; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 158 | |
| 159 | if (tf->flags & ATA_TFLAG_LBA48) { |
Jeff Garzik | ac19bff | 2005-10-29 13:58:21 -0400 | [diff] [blame] | 160 | tf->hob_feature = feature >> 8; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 161 | tf->hob_nsect = nsect >> 8; |
| 162 | tf->hob_lbal = lbal >> 8; |
| 163 | tf->hob_lbam = lbam >> 8; |
| 164 | tf->hob_lbah = lbah >> 8; |
| 165 | } |
| 166 | } |
| 167 | |
| 168 | /** |
| 169 | * k2_bmdma_setup_mmio - Set up PCI IDE BMDMA transaction (MMIO) |
| 170 | * @qc: Info associated with this ATA transaction. |
| 171 | * |
| 172 | * LOCKING: |
| 173 | * spin_lock_irqsave(host_set lock) |
| 174 | */ |
| 175 | |
| 176 | static void k2_bmdma_setup_mmio (struct ata_queued_cmd *qc) |
| 177 | { |
| 178 | struct ata_port *ap = qc->ap; |
| 179 | unsigned int rw = (qc->tf.flags & ATA_TFLAG_WRITE); |
| 180 | u8 dmactl; |
| 181 | void *mmio = (void *) ap->ioaddr.bmdma_addr; |
| 182 | /* load PRD table addr. */ |
| 183 | mb(); /* make sure PRD table writes are visible to controller */ |
| 184 | writel(ap->prd_dma, mmio + ATA_DMA_TABLE_OFS); |
| 185 | |
| 186 | /* specify data direction, triple-check start bit is clear */ |
| 187 | dmactl = readb(mmio + ATA_DMA_CMD); |
| 188 | dmactl &= ~(ATA_DMA_WR | ATA_DMA_START); |
| 189 | if (!rw) |
| 190 | dmactl |= ATA_DMA_WR; |
| 191 | writeb(dmactl, mmio + ATA_DMA_CMD); |
| 192 | |
| 193 | /* issue r/w command if this is not a ATA DMA command*/ |
| 194 | if (qc->tf.protocol != ATA_PROT_DMA) |
| 195 | ap->ops->exec_command(ap, &qc->tf); |
| 196 | } |
| 197 | |
| 198 | /** |
| 199 | * k2_bmdma_start_mmio - Start a PCI IDE BMDMA transaction (MMIO) |
| 200 | * @qc: Info associated with this ATA transaction. |
| 201 | * |
| 202 | * LOCKING: |
| 203 | * spin_lock_irqsave(host_set lock) |
| 204 | */ |
| 205 | |
| 206 | static void k2_bmdma_start_mmio (struct ata_queued_cmd *qc) |
| 207 | { |
| 208 | struct ata_port *ap = qc->ap; |
| 209 | void *mmio = (void *) ap->ioaddr.bmdma_addr; |
| 210 | u8 dmactl; |
| 211 | |
| 212 | /* start host DMA transaction */ |
| 213 | dmactl = readb(mmio + ATA_DMA_CMD); |
| 214 | writeb(dmactl | ATA_DMA_START, mmio + ATA_DMA_CMD); |
Jeff Garzik | 8a60a07 | 2005-07-31 13:13:24 -0400 | [diff] [blame] | 215 | /* There is a race condition in certain SATA controllers that can |
| 216 | be seen when the r/w command is given to the controller before the |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 217 | host DMA is started. On a Read command, the controller would initiate |
| 218 | the command to the drive even before it sees the DMA start. When there |
Jeff Garzik | 8a60a07 | 2005-07-31 13:13:24 -0400 | [diff] [blame] | 219 | are very fast drives connected to the controller, or when the data request |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 220 | hits in the drive cache, there is the possibility that the drive returns a part |
| 221 | or all of the requested data to the controller before the DMA start is issued. |
| 222 | In this case, the controller would become confused as to what to do with the data. |
| 223 | In the worst case when all the data is returned back to the controller, the |
| 224 | controller could hang. In other cases it could return partial data returning |
| 225 | in data corruption. This problem has been seen in PPC systems and can also appear |
Jeff Garzik | 8a60a07 | 2005-07-31 13:13:24 -0400 | [diff] [blame] | 226 | on an system with very fast disks, where the SATA controller is sitting behind a |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 227 | number of bridges, and hence there is significant latency between the r/w command |
| 228 | and the start command. */ |
| 229 | /* issue r/w command if the access is to ATA*/ |
| 230 | if (qc->tf.protocol == ATA_PROT_DMA) |
| 231 | ap->ops->exec_command(ap, &qc->tf); |
| 232 | } |
| 233 | |
Jeff Garzik | 8a60a07 | 2005-07-31 13:13:24 -0400 | [diff] [blame] | 234 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 235 | static u8 k2_stat_check_status(struct ata_port *ap) |
| 236 | { |
| 237 | return readl((void *) ap->ioaddr.status_addr); |
| 238 | } |
| 239 | |
| 240 | #ifdef CONFIG_PPC_OF |
| 241 | /* |
| 242 | * k2_sata_proc_info |
| 243 | * inout : decides on the direction of the dataflow and the meaning of the |
| 244 | * variables |
| 245 | * buffer: If inout==FALSE data is being written to it else read from it |
| 246 | * *start: If inout==FALSE start of the valid data in the buffer |
| 247 | * offset: If inout==FALSE offset from the beginning of the imaginary file |
| 248 | * from which we start writing into the buffer |
| 249 | * length: If inout==FALSE max number of bytes to be written into the buffer |
| 250 | * else number of bytes in the buffer |
| 251 | */ |
| 252 | static int k2_sata_proc_info(struct Scsi_Host *shost, char *page, char **start, |
| 253 | off_t offset, int count, int inout) |
| 254 | { |
| 255 | struct ata_port *ap; |
| 256 | struct device_node *np; |
| 257 | int len, index; |
| 258 | |
| 259 | /* Find the ata_port */ |
Jeff Garzik | 35bb94b | 2006-04-11 13:12:34 -0400 | [diff] [blame] | 260 | ap = ata_shost_to_port(shost); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 261 | if (ap == NULL) |
| 262 | return 0; |
| 263 | |
| 264 | /* Find the OF node for the PCI device proper */ |
| 265 | np = pci_device_to_OF_node(to_pci_dev(ap->host_set->dev)); |
| 266 | if (np == NULL) |
| 267 | return 0; |
| 268 | |
| 269 | /* Match it to a port node */ |
| 270 | index = (ap == ap->host_set->ports[0]) ? 0 : 1; |
| 271 | for (np = np->child; np != NULL; np = np->sibling) { |
| 272 | u32 *reg = (u32 *)get_property(np, "reg", NULL); |
| 273 | if (!reg) |
| 274 | continue; |
| 275 | if (index == *reg) |
| 276 | break; |
| 277 | } |
| 278 | if (np == NULL) |
| 279 | return 0; |
| 280 | |
| 281 | len = sprintf(page, "devspec: %s\n", np->full_name); |
| 282 | |
| 283 | return len; |
| 284 | } |
| 285 | #endif /* CONFIG_PPC_OF */ |
| 286 | |
| 287 | |
Jeff Garzik | 193515d | 2005-11-07 00:59:37 -0500 | [diff] [blame] | 288 | static struct scsi_host_template k2_sata_sht = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 289 | .module = THIS_MODULE, |
| 290 | .name = DRV_NAME, |
| 291 | .ioctl = ata_scsi_ioctl, |
| 292 | .queuecommand = ata_scsi_queuecmd, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 293 | .can_queue = ATA_DEF_QUEUE, |
| 294 | .this_id = ATA_SHT_THIS_ID, |
| 295 | .sg_tablesize = LIBATA_MAX_PRD, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 296 | .cmd_per_lun = ATA_SHT_CMD_PER_LUN, |
| 297 | .emulated = ATA_SHT_EMULATED, |
| 298 | .use_clustering = ATA_SHT_USE_CLUSTERING, |
| 299 | .proc_name = DRV_NAME, |
| 300 | .dma_boundary = ATA_DMA_BOUNDARY, |
| 301 | .slave_configure = ata_scsi_slave_config, |
Tejun Heo | ccf68c3 | 2006-05-31 18:28:09 +0900 | [diff] [blame] | 302 | .slave_destroy = ata_scsi_slave_destroy, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 303 | #ifdef CONFIG_PPC_OF |
| 304 | .proc_info = k2_sata_proc_info, |
| 305 | #endif |
| 306 | .bios_param = ata_std_bios_param, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 307 | }; |
| 308 | |
| 309 | |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 310 | static const struct ata_port_operations k2_sata_ops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 311 | .port_disable = ata_port_disable, |
| 312 | .tf_load = k2_sata_tf_load, |
| 313 | .tf_read = k2_sata_tf_read, |
| 314 | .check_status = k2_stat_check_status, |
| 315 | .exec_command = ata_exec_command, |
| 316 | .dev_select = ata_std_dev_select, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 317 | .bmdma_setup = k2_bmdma_setup_mmio, |
| 318 | .bmdma_start = k2_bmdma_start_mmio, |
| 319 | .bmdma_stop = ata_bmdma_stop, |
| 320 | .bmdma_status = ata_bmdma_status, |
| 321 | .qc_prep = ata_qc_prep, |
| 322 | .qc_issue = ata_qc_issue_prot, |
Alan Cox | a6b2c5d | 2006-05-22 16:59:59 +0100 | [diff] [blame] | 323 | .data_xfer = ata_mmio_data_xfer, |
Tejun Heo | d7a80da | 2006-06-16 15:00:18 +0900 | [diff] [blame] | 324 | .freeze = ata_bmdma_freeze, |
| 325 | .thaw = ata_bmdma_thaw, |
| 326 | .error_handler = ata_bmdma_error_handler, |
| 327 | .post_internal_cmd = ata_bmdma_post_internal_cmd, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 328 | .irq_handler = ata_interrupt, |
| 329 | .irq_clear = ata_bmdma_irq_clear, |
| 330 | .scr_read = k2_sata_scr_read, |
| 331 | .scr_write = k2_sata_scr_write, |
| 332 | .port_start = ata_port_start, |
| 333 | .port_stop = ata_port_stop, |
Jeff Garzik | 374b187 | 2005-08-30 05:42:52 -0400 | [diff] [blame] | 334 | .host_stop = ata_pci_host_stop, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 335 | }; |
| 336 | |
| 337 | static void k2_sata_setup_port(struct ata_ioports *port, unsigned long base) |
| 338 | { |
| 339 | port->cmd_addr = base + K2_SATA_TF_CMD_OFFSET; |
| 340 | port->data_addr = base + K2_SATA_TF_DATA_OFFSET; |
| 341 | port->feature_addr = |
| 342 | port->error_addr = base + K2_SATA_TF_ERROR_OFFSET; |
| 343 | port->nsect_addr = base + K2_SATA_TF_NSECT_OFFSET; |
| 344 | port->lbal_addr = base + K2_SATA_TF_LBAL_OFFSET; |
| 345 | port->lbam_addr = base + K2_SATA_TF_LBAM_OFFSET; |
| 346 | port->lbah_addr = base + K2_SATA_TF_LBAH_OFFSET; |
| 347 | port->device_addr = base + K2_SATA_TF_DEVICE_OFFSET; |
| 348 | port->command_addr = |
| 349 | port->status_addr = base + K2_SATA_TF_CMDSTAT_OFFSET; |
| 350 | port->altstatus_addr = |
| 351 | port->ctl_addr = base + K2_SATA_TF_CTL_OFFSET; |
| 352 | port->bmdma_addr = base + K2_SATA_DMA_CMD_OFFSET; |
| 353 | port->scr_addr = base + K2_SATA_SCR_STATUS_OFFSET; |
| 354 | } |
| 355 | |
| 356 | |
| 357 | static int k2_sata_init_one (struct pci_dev *pdev, const struct pci_device_id *ent) |
| 358 | { |
| 359 | static int printed_version; |
| 360 | struct ata_probe_ent *probe_ent = NULL; |
| 361 | unsigned long base; |
Jeff Garzik | ea6ba10 | 2005-08-30 05:18:18 -0400 | [diff] [blame] | 362 | void __iomem *mmio_base; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 363 | int pci_dev_busy = 0; |
| 364 | int rc; |
Narendra Sankar | 60bf09a | 2005-05-25 16:51:00 -0700 | [diff] [blame] | 365 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 366 | |
| 367 | if (!printed_version++) |
Jeff Garzik | a9524a7 | 2005-10-30 14:39:11 -0500 | [diff] [blame] | 368 | dev_printk(KERN_DEBUG, &pdev->dev, "version " DRV_VERSION "\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 369 | |
| 370 | /* |
| 371 | * If this driver happens to only be useful on Apple's K2, then |
| 372 | * we should check that here as it has a normal Serverworks ID |
| 373 | */ |
| 374 | rc = pci_enable_device(pdev); |
| 375 | if (rc) |
| 376 | return rc; |
| 377 | /* |
| 378 | * Check if we have resources mapped at all (second function may |
| 379 | * have been disabled by firmware) |
| 380 | */ |
| 381 | if (pci_resource_len(pdev, 5) == 0) |
| 382 | return -ENODEV; |
| 383 | |
| 384 | /* Request PCI regions */ |
| 385 | rc = pci_request_regions(pdev, DRV_NAME); |
| 386 | if (rc) { |
| 387 | pci_dev_busy = 1; |
| 388 | goto err_out; |
| 389 | } |
| 390 | |
| 391 | rc = pci_set_dma_mask(pdev, ATA_DMA_MASK); |
| 392 | if (rc) |
| 393 | goto err_out_regions; |
| 394 | rc = pci_set_consistent_dma_mask(pdev, ATA_DMA_MASK); |
| 395 | if (rc) |
| 396 | goto err_out_regions; |
| 397 | |
| 398 | probe_ent = kmalloc(sizeof(*probe_ent), GFP_KERNEL); |
| 399 | if (probe_ent == NULL) { |
| 400 | rc = -ENOMEM; |
| 401 | goto err_out_regions; |
| 402 | } |
| 403 | |
| 404 | memset(probe_ent, 0, sizeof(*probe_ent)); |
| 405 | probe_ent->dev = pci_dev_to_dev(pdev); |
| 406 | INIT_LIST_HEAD(&probe_ent->node); |
| 407 | |
Jeff Garzik | 374b187 | 2005-08-30 05:42:52 -0400 | [diff] [blame] | 408 | mmio_base = pci_iomap(pdev, 5, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 409 | if (mmio_base == NULL) { |
| 410 | rc = -ENOMEM; |
| 411 | goto err_out_free_ent; |
| 412 | } |
| 413 | base = (unsigned long) mmio_base; |
| 414 | |
| 415 | /* Clear a magic bit in SCR1 according to Darwin, those help |
| 416 | * some funky seagate drives (though so far, those were already |
Rolf Eike Beer | 104e501 | 2005-03-27 08:50:38 -0500 | [diff] [blame] | 417 | * set by the firmware on the machines I had access to) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 418 | */ |
| 419 | writel(readl(mmio_base + K2_SATA_SICR1_OFFSET) & ~0x00040000, |
| 420 | mmio_base + K2_SATA_SICR1_OFFSET); |
| 421 | |
| 422 | /* Clear SATA error & interrupts we don't use */ |
| 423 | writel(0xffffffff, mmio_base + K2_SATA_SCR_ERROR_OFFSET); |
| 424 | writel(0x0, mmio_base + K2_SATA_SIM_OFFSET); |
| 425 | |
| 426 | probe_ent->sht = &k2_sata_sht; |
Tejun Heo | d7a80da | 2006-06-16 15:00:18 +0900 | [diff] [blame] | 427 | probe_ent->host_flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY | |
| 428 | ATA_FLAG_MMIO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 429 | probe_ent->port_ops = &k2_sata_ops; |
| 430 | probe_ent->n_ports = 4; |
| 431 | probe_ent->irq = pdev->irq; |
| 432 | probe_ent->irq_flags = SA_SHIRQ; |
| 433 | probe_ent->mmio_base = mmio_base; |
| 434 | |
| 435 | /* We don't care much about the PIO/UDMA masks, but the core won't like us |
| 436 | * if we don't fill these |
| 437 | */ |
| 438 | probe_ent->pio_mask = 0x1f; |
| 439 | probe_ent->mwdma_mask = 0x7; |
| 440 | probe_ent->udma_mask = 0x7f; |
| 441 | |
Narendra Sankar | 60bf09a | 2005-05-25 16:51:00 -0700 | [diff] [blame] | 442 | /* different controllers have different number of ports - currently 4 or 8 */ |
| 443 | /* All ports are on the same function. Multi-function device is no |
| 444 | * longer available. This should not be seen in any system. */ |
| 445 | for (i = 0; i < ent->driver_data; i++) |
| 446 | k2_sata_setup_port(&probe_ent->port[i], base + i * K2_SATA_PORT_OFFSET); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 447 | |
| 448 | pci_set_master(pdev); |
| 449 | |
| 450 | /* FIXME: check ata_device_add return value */ |
| 451 | ata_device_add(probe_ent); |
| 452 | kfree(probe_ent); |
| 453 | |
| 454 | return 0; |
| 455 | |
| 456 | err_out_free_ent: |
| 457 | kfree(probe_ent); |
| 458 | err_out_regions: |
| 459 | pci_release_regions(pdev); |
| 460 | err_out: |
| 461 | if (!pci_dev_busy) |
| 462 | pci_disable_device(pdev); |
| 463 | return rc; |
| 464 | } |
| 465 | |
Narendra Sankar | 60bf09a | 2005-05-25 16:51:00 -0700 | [diff] [blame] | 466 | /* 0x240 is device ID for Apple K2 device |
| 467 | * 0x241 is device ID for Serverworks Frodo4 |
| 468 | * 0x242 is device ID for Serverworks Frodo8 |
| 469 | * 0x24a is device ID for BCM5785 (aka HT1000) HT southbridge integrated SATA |
| 470 | * controller |
| 471 | * */ |
Jeff Garzik | 3b7d697 | 2005-11-10 11:04:11 -0500 | [diff] [blame] | 472 | static const struct pci_device_id k2_sata_pci_tbl[] = { |
Narendra Sankar | 60bf09a | 2005-05-25 16:51:00 -0700 | [diff] [blame] | 473 | { 0x1166, 0x0240, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 4 }, |
| 474 | { 0x1166, 0x0241, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 4 }, |
| 475 | { 0x1166, 0x0242, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 8 }, |
| 476 | { 0x1166, 0x024a, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 4 }, |
Oliver Weihe | 88b5287 | 2006-01-17 07:58:42 -0500 | [diff] [blame] | 477 | { 0x1166, 0x024b, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 4 }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 478 | { } |
| 479 | }; |
| 480 | |
| 481 | |
| 482 | static struct pci_driver k2_sata_pci_driver = { |
| 483 | .name = DRV_NAME, |
| 484 | .id_table = k2_sata_pci_tbl, |
| 485 | .probe = k2_sata_init_one, |
| 486 | .remove = ata_pci_remove_one, |
| 487 | }; |
| 488 | |
| 489 | |
| 490 | static int __init k2_sata_init(void) |
| 491 | { |
| 492 | return pci_module_init(&k2_sata_pci_driver); |
| 493 | } |
| 494 | |
| 495 | |
| 496 | static void __exit k2_sata_exit(void) |
| 497 | { |
| 498 | pci_unregister_driver(&k2_sata_pci_driver); |
| 499 | } |
| 500 | |
| 501 | |
| 502 | MODULE_AUTHOR("Benjamin Herrenschmidt"); |
| 503 | MODULE_DESCRIPTION("low-level driver for K2 SATA controller"); |
| 504 | MODULE_LICENSE("GPL"); |
| 505 | MODULE_DEVICE_TABLE(pci, k2_sata_pci_tbl); |
| 506 | MODULE_VERSION(DRV_VERSION); |
| 507 | |
| 508 | module_init(k2_sata_init); |
| 509 | module_exit(k2_sata_exit); |