drivers/scsi/sata_uli.c

   1 /*
   2  *  sata_uli.c - ULi Electronics SATA
   3  *
   4  *
   5  *  This program is free software; you can redistribute it and/or modify
   6  *  it under the terms of the GNU General Public License as published by
   7  *  the Free Software Foundation; either version 2, or (at your option)
   8  *  any later version.
   9  *
  10  *  This program is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License
  16  *  along with this program; see the file COPYING.  If not, write to
  17  *  the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
  18  *
  19  *
  20  *  libata documentation is available via 'make {ps|pdf}docs',
  21  *  as Documentation/DocBook/libata.*
  22  *
  23  *  Hardware documentation available under NDA.
  24  *
  25  */
  26
  27 #include <linux/config.h>
  28 #include <linux/kernel.h>
  29 #include <linux/module.h>
  30 #include <linux/pci.h>
  31 #include <linux/init.h>
  32 #include <linux/blkdev.h>
  33 #include <linux/delay.h>
  34 #include <linux/interrupt.h>
  35 #include <linux/device.h>
  36 #include <scsi/scsi_host.h>
  37 #include <linux/libata.h>
  38
  39 #define DRV_NAME        "sata_uli"
  40 #define DRV_VERSION     "0.5"
  41
  42 enum {
  43         uli_5289                = 0,
  44         uli_5287                = 1,
  45         uli_5281                = 2,
  46
  47         /* PCI configuration registers */
  48         ULI5287_BASE            = 0x90, /* sata0 phy SCR registers */
  49         ULI5287_OFFS            = 0x10, /* offset from sata0->sata1 phy regs */
  50         ULI5281_BASE            = 0x60, /* sata0 phy SCR  registers */
  51         ULI5281_OFFS            = 0x60, /* offset from sata0->sata1 phy regs */
  52 };
  53
  54 static int uli_init_one (struct pci_dev *pdev, const struct pci_device_id *ent);
  55 static u32 uli_scr_read (struct ata_port *ap, unsigned int sc_reg);
  56 static void uli_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val);
  57
  58 static const struct pci_device_id uli_pci_tbl[] = {
  59         { PCI_VENDOR_ID_AL, 0x5289, PCI_ANY_ID, PCI_ANY_ID, 0, 0, uli_5289 },
  60         { PCI_VENDOR_ID_AL, 0x5287, PCI_ANY_ID, PCI_ANY_ID, 0, 0, uli_5287 },
  61         { PCI_VENDOR_ID_AL, 0x5281, PCI_ANY_ID, PCI_ANY_ID, 0, 0, uli_5281 },
  62         { }     /* terminate list */
  63 };
  64
  65
  66 static struct pci_driver uli_pci_driver = {
  67         .name                   = DRV_NAME,
  68         .id_table               = uli_pci_tbl,
  69         .probe                  = uli_init_one,
  70         .remove                 = ata_pci_remove_one,
  71 };
  72
  73 static struct scsi_host_template uli_sht = {
  74         .module                 = THIS_MODULE,
  75         .name                   = DRV_NAME,
  76         .ioctl                  = ata_scsi_ioctl,
  77         .queuecommand           = ata_scsi_queuecmd,
  78         .eh_strategy_handler    = ata_scsi_error,
  79         .can_queue              = ATA_DEF_QUEUE,
  80         .this_id                = ATA_SHT_THIS_ID,
  81         .sg_tablesize           = LIBATA_MAX_PRD,
  82         .max_sectors            = ATA_MAX_SECTORS,
  83         .cmd_per_lun            = ATA_SHT_CMD_PER_LUN,
  84         .emulated               = ATA_SHT_EMULATED,
  85         .use_clustering         = ATA_SHT_USE_CLUSTERING,
  86         .proc_name              = DRV_NAME,
  87         .dma_boundary           = ATA_DMA_BOUNDARY,
  88         .slave_configure        = ata_scsi_slave_config,
  89         .bios_param             = ata_std_bios_param,
  90 };
  91
  92 static const struct ata_port_operations uli_ops = {
  93         .port_disable           = ata_port_disable,
  94
  95         .tf_load                = ata_tf_load,
  96         .tf_read                = ata_tf_read,
  97         .check_status           = ata_check_status,
  98         .exec_command           = ata_exec_command,
  99         .dev_select             = ata_std_dev_select,
 100
 101         .phy_reset              = sata_phy_reset,
 102
 103         .bmdma_setup            = ata_bmdma_setup,
 104         .bmdma_start            = ata_bmdma_start,
 105         .bmdma_stop             = ata_bmdma_stop,
 106         .bmdma_status           = ata_bmdma_status,
 107         .qc_prep                = ata_qc_prep,
 108         .qc_issue               = ata_qc_issue_prot,
 109
 110         .eng_timeout            = ata_eng_timeout,
 111
 112         .irq_handler            = ata_interrupt,
 113         .irq_clear              = ata_bmdma_irq_clear,
 114
 115         .scr_read               = uli_scr_read,
 116         .scr_write              = uli_scr_write,
 117
 118         .port_start             = ata_port_start,
 119         .port_stop              = ata_port_stop,
 120         .host_stop              = ata_host_stop,
 121 };
 122
 123 static struct ata_port_info uli_port_info = {
 124         .sht            = &uli_sht,
 125         .host_flags     = ATA_FLAG_SATA | ATA_FLAG_SATA_RESET |
 126                           ATA_FLAG_NO_LEGACY,
 127         .pio_mask       = 0x1f,         /* pio0-4 */
 128         .udma_mask      = 0x7f,         /* udma0-6 */
 129         .port_ops       = &uli_ops,
 130 };
 131
 132
 133 MODULE_AUTHOR("Peer Chen");
 134 MODULE_DESCRIPTION("low-level driver for ULi Electronics SATA controller");
 135 MODULE_LICENSE("GPL");
 136 MODULE_DEVICE_TABLE(pci, uli_pci_tbl);
 137 MODULE_VERSION(DRV_VERSION);
 138
 139 static unsigned int get_scr_cfg_addr(struct ata_port *ap, unsigned int sc_reg)
 140 {
 141         return ap->ioaddr.scr_addr + (4 * sc_reg);
 142 }
 143
 144 static u32 uli_scr_cfg_read (struct ata_port *ap, unsigned int sc_reg)
 145 {
 146         struct pci_dev *pdev = to_pci_dev(ap->host_set->dev);
 147         unsigned int cfg_addr = get_scr_cfg_addr(ap, sc_reg);
 148         u32 val;
 149
 150         pci_read_config_dword(pdev, cfg_addr, &val);
 151         return val;
 152 }
 153
 154 static void uli_scr_cfg_write (struct ata_port *ap, unsigned int scr, u32 val)
 155 {
 156         struct pci_dev *pdev = to_pci_dev(ap->host_set->dev);
 157         unsigned int cfg_addr = get_scr_cfg_addr(ap, scr);
 158
 159         pci_write_config_dword(pdev, cfg_addr, val);
 160 }
 161
 162 static u32 uli_scr_read (struct ata_port *ap, unsigned int sc_reg)
 163 {
 164         if (sc_reg > SCR_CONTROL)
 165                 return 0xffffffffU;
 166
 167         return uli_scr_cfg_read(ap, sc_reg);
 168 }
 169
 170 static void uli_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val)
 171 {
 172         if (sc_reg > SCR_CONTROL)       //SCR_CONTROL=2, SCR_ERROR=1, SCR_STATUS=0
 173                 return;
 174
 175         uli_scr_cfg_write(ap, sc_reg, val);
 176 }
 177
 178 static int uli_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
 179 {
 180         static int printed_version;
 181         struct ata_probe_ent *probe_ent;
 182         struct ata_port_info *ppi;
 183         int rc;
 184         unsigned int board_idx = (unsigned int) ent->driver_data;
 185         int pci_dev_busy = 0;
 186
 187         if (!printed_version++)
 188                 dev_printk(KERN_INFO, &pdev->dev, "version " DRV_VERSION "\n");
 189
 190         rc = pci_enable_device(pdev);
 191         if (rc)
 192                 return rc;
 193
 194         rc = pci_request_regions(pdev, DRV_NAME);
 195         if (rc) {
 196                 pci_dev_busy = 1;
 197                 goto err_out;
 198         }
 199
 200         rc = pci_set_dma_mask(pdev, ATA_DMA_MASK);
 201         if (rc)
 202                 goto err_out_regions;
 203         rc = pci_set_consistent_dma_mask(pdev, ATA_DMA_MASK);
 204         if (rc)
 205                 goto err_out_regions;
 206
 207         ppi = &uli_port_info;
 208         probe_ent = ata_pci_init_native_mode(pdev, &ppi, ATA_PORT_PRIMARY | ATA_PORT_SECONDARY);
 209         if (!probe_ent) {
 210                 rc = -ENOMEM;
 211                 goto err_out_regions;
 212         }
 213
 214         switch (board_idx) {
 215         case uli_5287:
 216                 probe_ent->port[0].scr_addr = ULI5287_BASE;
 217                 probe_ent->port[1].scr_addr = ULI5287_BASE + ULI5287_OFFS;
 218                 probe_ent->n_ports = 4;
 219
 220                 probe_ent->port[2].cmd_addr = pci_resource_start(pdev, 0) + 8;
 221                 probe_ent->port[2].altstatus_addr =
 222                 probe_ent->port[2].ctl_addr =
 223                         (pci_resource_start(pdev, 1) | ATA_PCI_CTL_OFS) + 4;
 224                 probe_ent->port[2].bmdma_addr = pci_resource_start(pdev, 4) + 16;
 225                 probe_ent->port[2].scr_addr = ULI5287_BASE + ULI5287_OFFS*4;
 226
 227                 probe_ent->port[3].cmd_addr = pci_resource_start(pdev, 2) + 8;
 228                 probe_ent->port[3].altstatus_addr =
 229                 probe_ent->port[3].ctl_addr =
 230                         (pci_resource_start(pdev, 3) | ATA_PCI_CTL_OFS) + 4;
 231                 probe_ent->port[3].bmdma_addr = pci_resource_start(pdev, 4) + 24;
 232                 probe_ent->port[3].scr_addr = ULI5287_BASE + ULI5287_OFFS*5;
 233
 234                 ata_std_ports(&probe_ent->port[2]);
 235                 ata_std_ports(&probe_ent->port[3]);
 236                 break;
 237
 238         case uli_5289:
 239                 probe_ent->port[0].scr_addr = ULI5287_BASE;
 240                 probe_ent->port[1].scr_addr = ULI5287_BASE + ULI5287_OFFS;
 241                 break;
 242
 243         case uli_5281:
 244                 probe_ent->port[0].scr_addr = ULI5281_BASE;
 245                 probe_ent->port[1].scr_addr = ULI5281_BASE + ULI5281_OFFS;
 246                 break;
 247
 248         default:
 249                 BUG();
 250                 break;
 251         }
 252
 253         pci_set_master(pdev);
 254         pci_intx(pdev, 1);
 255
 256         /* FIXME: check ata_device_add return value */
 257         ata_device_add(probe_ent);
 258         kfree(probe_ent);
 259
 260         return 0;
 261
 262 err_out_regions:
 263         pci_release_regions(pdev);
 264
 265 err_out:
 266         if (!pci_dev_busy)
 267                 pci_disable_device(pdev);
 268         return rc;
 269
 270 }
 271
 272 static int __init uli_init(void)
 273 {
 274         return pci_module_init(&uli_pci_driver);
 275 }
 276
 277 static void __exit uli_exit(void)
 278 {
 279         pci_unregister_driver(&uli_pci_driver);
 280 }
 281
 282
 283 module_init(uli_init);
 284 module_exit(uli_exit);