drivers/scsi/sata_uli.c

   1 /*
   2  *  sata_uli.c - ULi Electronics SATA
   3  *
   4  *  The contents of this file are subject to the Open
   5  *  Software License version 1.1 that can be found at
   6  *  http://www.opensource.org/licenses/osl-1.1.txt and is included herein
   7  *  by reference.
   8  *
   9  *  Alternatively, the contents of this file may be used under the terms
  10  *  of the GNU General Public License version 2 (the "GPL") as distributed
  11  *  in the kernel source COPYING file, in which case the provisions of
  12  *  the GPL are applicable instead of the above.  If you wish to allow
  13  *  the use of your version of this file only under the terms of the
  14  *  GPL and not to allow others to use your version of this file under
  15  *  the OSL, indicate your decision by deleting the provisions above and
  16  *  replace them with the notice and other provisions required by the GPL.
  17  *  If you do not delete the provisions above, a recipient may use your
  18  *  version of this file under either the OSL or the GPL.
  19  *
  20  */
  21
  22 #include <linux/config.h>
  23 #include <linux/kernel.h>
  24 #include <linux/module.h>
  25 #include <linux/pci.h>
  26 #include <linux/init.h>
  27 #include <linux/blkdev.h>
  28 #include <linux/delay.h>
  29 #include <linux/interrupt.h>
  30 #include "scsi.h"
  31 #include <scsi/scsi_host.h>
  32 #include <linux/libata.h>
  33
  34 #define DRV_NAME        "sata_uli"
  35 #define DRV_VERSION     "0.5"
  36
  37 enum {
  38         uli_5289                = 0,
  39         uli_5287                = 1,
  40         uli_5281                = 2,
  41
  42         /* PCI configuration registers */
  43         ULI5287_BASE            = 0x90, /* sata0 phy SCR registers */
  44         ULI5287_OFFS            = 0x10, /* offset from sata0->sata1 phy regs */
  45         ULI5281_BASE            = 0x60, /* sata0 phy SCR  registers */
  46         ULI5281_OFFS            = 0x60, /* offset from sata0->sata1 phy regs */
  47 };
  48
  49 static int uli_init_one (struct pci_dev *pdev, const struct pci_device_id *ent);
  50 static u32 uli_scr_read (struct ata_port *ap, unsigned int sc_reg);
  51 static void uli_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val);
  52
  53 static struct pci_device_id uli_pci_tbl[] = {
  54         { PCI_VENDOR_ID_AL, 0x5289, PCI_ANY_ID, PCI_ANY_ID, 0, 0, uli_5289 },
  55         { PCI_VENDOR_ID_AL, 0x5287, PCI_ANY_ID, PCI_ANY_ID, 0, 0, uli_5287 },
  56         { PCI_VENDOR_ID_AL, 0x5281, PCI_ANY_ID, PCI_ANY_ID, 0, 0, uli_5281 },
  57         { }     /* terminate list */
  58 };
  59
  60
  61 static struct pci_driver uli_pci_driver = {
  62         .name                   = DRV_NAME,
  63         .id_table               = uli_pci_tbl,
  64         .probe                  = uli_init_one,
  65         .remove                 = ata_pci_remove_one,
  66 };
  67
  68 static Scsi_Host_Template uli_sht = {
  69         .module                 = THIS_MODULE,
  70         .name                   = DRV_NAME,
  71         .ioctl                  = ata_scsi_ioctl,
  72         .queuecommand           = ata_scsi_queuecmd,
  73         .eh_strategy_handler    = ata_scsi_error,
  74         .can_queue              = ATA_DEF_QUEUE,
  75         .this_id                = ATA_SHT_THIS_ID,
  76         .sg_tablesize           = LIBATA_MAX_PRD,
  77         .max_sectors            = ATA_MAX_SECTORS,
  78         .cmd_per_lun            = ATA_SHT_CMD_PER_LUN,
  79         .emulated               = ATA_SHT_EMULATED,
  80         .use_clustering         = ATA_SHT_USE_CLUSTERING,
  81         .proc_name              = DRV_NAME,
  82         .dma_boundary           = ATA_DMA_BOUNDARY,
  83         .slave_configure        = ata_scsi_slave_config,
  84         .bios_param             = ata_std_bios_param,
  85         .ordered_flush          = 1,
  86 };
  87
  88 static struct ata_port_operations uli_ops = {
  89         .port_disable           = ata_port_disable,
  90
  91         .tf_load                = ata_tf_load,
  92         .tf_read                = ata_tf_read,
  93         .check_status           = ata_check_status,
  94         .exec_command           = ata_exec_command,
  95         .dev_select             = ata_std_dev_select,
  96
  97         .phy_reset              = sata_phy_reset,
  98
  99         .bmdma_setup            = ata_bmdma_setup,
 100         .bmdma_start            = ata_bmdma_start,
 101         .bmdma_stop             = ata_bmdma_stop,
 102         .bmdma_status           = ata_bmdma_status,
 103         .qc_prep                = ata_qc_prep,
 104         .qc_issue               = ata_qc_issue_prot,
 105
 106         .eng_timeout            = ata_eng_timeout,
 107
 108         .irq_handler            = ata_interrupt,
 109         .irq_clear              = ata_bmdma_irq_clear,
 110
 111         .scr_read               = uli_scr_read,
 112         .scr_write              = uli_scr_write,
 113
 114         .port_start             = ata_port_start,
 115         .port_stop              = ata_port_stop,
 116         .host_stop              = ata_host_stop,
 117 };
 118
 119 static struct ata_port_info uli_port_info = {
 120         .sht            = &uli_sht,
 121         .host_flags     = ATA_FLAG_SATA | ATA_FLAG_SATA_RESET |
 122                           ATA_FLAG_NO_LEGACY,
 123         .pio_mask       = 0x03,         //support pio mode 4 (FIXME)
 124         .udma_mask      = 0x7f,         //support udma mode 6
 125         .port_ops       = &uli_ops,
 126 };
 127
 128
 129 MODULE_AUTHOR("Peer Chen");
 130 MODULE_DESCRIPTION("low-level driver for ULi Electronics SATA controller");
 131 MODULE_LICENSE("GPL");
 132 MODULE_DEVICE_TABLE(pci, uli_pci_tbl);
 133 MODULE_VERSION(DRV_VERSION);
 134
 135 static unsigned int get_scr_cfg_addr(struct ata_port *ap, unsigned int sc_reg)
 136 {
 137         return ap->ioaddr.scr_addr + (4 * sc_reg);
 138 }
 139
 140 static u32 uli_scr_cfg_read (struct ata_port *ap, unsigned int sc_reg)
 141 {
 142         struct pci_dev *pdev = to_pci_dev(ap->host_set->dev);
 143         unsigned int cfg_addr = get_scr_cfg_addr(ap, sc_reg);
 144         u32 val;
 145
 146         pci_read_config_dword(pdev, cfg_addr, &val);
 147         return val;
 148 }
 149
 150 static void uli_scr_cfg_write (struct ata_port *ap, unsigned int scr, u32 val)
 151 {
 152         struct pci_dev *pdev = to_pci_dev(ap->host_set->dev);
 153         unsigned int cfg_addr = get_scr_cfg_addr(ap, scr);
 154
 155         pci_write_config_dword(pdev, cfg_addr, val);
 156 }
 157
 158 static u32 uli_scr_read (struct ata_port *ap, unsigned int sc_reg)
 159 {
 160         if (sc_reg > SCR_CONTROL)
 161                 return 0xffffffffU;
 162
 163         return uli_scr_cfg_read(ap, sc_reg);
 164 }
 165
 166 static void uli_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val)
 167 {
 168         if (sc_reg > SCR_CONTROL)       //SCR_CONTROL=2, SCR_ERROR=1, SCR_STATUS=0
 169                 return;
 170
 171         uli_scr_cfg_write(ap, sc_reg, val);
 172 }
 173
 174 /* move to PCI layer, integrate w/ MSI stuff */
 175 static void pci_enable_intx(struct pci_dev *pdev)
 176 {
 177         u16 pci_command;
 178
 179         pci_read_config_word(pdev, PCI_COMMAND, &pci_command);
 180         if (pci_command & PCI_COMMAND_INTX_DISABLE) {
 181                 pci_command &= ~PCI_COMMAND_INTX_DISABLE;
 182                 pci_write_config_word(pdev, PCI_COMMAND, pci_command);
 183         }
 184 }
 185
 186 static int uli_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
 187 {
 188         struct ata_probe_ent *probe_ent;
 189         struct ata_port_info *ppi;
 190         int rc;
 191         unsigned int board_idx = (unsigned int) ent->driver_data;
 192         int pci_dev_busy = 0;
 193
 194         rc = pci_enable_device(pdev);
 195         if (rc)
 196                 return rc;
 197
 198         rc = pci_request_regions(pdev, DRV_NAME);
 199         if (rc) {
 200                 pci_dev_busy = 1;
 201                 goto err_out;
 202         }
 203
 204         rc = pci_set_dma_mask(pdev, ATA_DMA_MASK);
 205         if (rc)
 206                 goto err_out_regions;
 207         rc = pci_set_consistent_dma_mask(pdev, ATA_DMA_MASK);
 208         if (rc)
 209                 goto err_out_regions;
 210
 211         ppi = &uli_port_info;
 212         probe_ent = ata_pci_init_native_mode(pdev, &ppi);
 213         if (!probe_ent) {
 214                 rc = -ENOMEM;
 215                 goto err_out_regions;
 216         }
 217
 218         switch (board_idx) {
 219         case uli_5287:
 220                 probe_ent->port[0].scr_addr = ULI5287_BASE;
 221                 probe_ent->port[1].scr_addr = ULI5287_BASE + ULI5287_OFFS;
 222                 probe_ent->n_ports = 4;
 223
 224                 probe_ent->port[2].cmd_addr = pci_resource_start(pdev, 0) + 8;
 225                 probe_ent->port[2].altstatus_addr =
 226                 probe_ent->port[2].ctl_addr =
 227                         (pci_resource_start(pdev, 1) | ATA_PCI_CTL_OFS) + 4;
 228                 probe_ent->port[2].bmdma_addr = pci_resource_start(pdev, 4) + 16;
 229                 probe_ent->port[2].scr_addr = ULI5287_BASE + ULI5287_OFFS*4;
 230
 231                 probe_ent->port[3].cmd_addr = pci_resource_start(pdev, 2) + 8;
 232                 probe_ent->port[3].altstatus_addr =
 233                 probe_ent->port[3].ctl_addr =
 234                         (pci_resource_start(pdev, 3) | ATA_PCI_CTL_OFS) + 4;
 235                 probe_ent->port[3].bmdma_addr = pci_resource_start(pdev, 4) + 24;
 236                 probe_ent->port[3].scr_addr = ULI5287_BASE + ULI5287_OFFS*5;
 237
 238                 ata_std_ports(&probe_ent->port[2]);
 239                 ata_std_ports(&probe_ent->port[3]);
 240                 break;
 241
 242         case uli_5289:
 243                 probe_ent->port[0].scr_addr = ULI5287_BASE;
 244                 probe_ent->port[1].scr_addr = ULI5287_BASE + ULI5287_OFFS;
 245                 break;
 246
 247         case uli_5281:
 248                 probe_ent->port[0].scr_addr = ULI5281_BASE;
 249                 probe_ent->port[1].scr_addr = ULI5281_BASE + ULI5281_OFFS;
 250                 break;
 251
 252         default:
 253                 BUG();
 254                 break;
 255         }
 256
 257         pci_set_master(pdev);
 258         pci_enable_intx(pdev);
 259
 260         /* FIXME: check ata_device_add return value */
 261         ata_device_add(probe_ent);
 262         kfree(probe_ent);
 263
 264         return 0;
 265
 266 err_out_regions:
 267         pci_release_regions(pdev);
 268
 269 err_out:
 270         if (!pci_dev_busy)
 271                 pci_disable_device(pdev);
 272         return rc;
 273
 274 }
 275
 276 static int __init uli_init(void)
 277 {
 278         return pci_module_init(&uli_pci_driver);
 279 }
 280
 281 static void __exit uli_exit(void)
 282 {
 283         pci_unregister_driver(&uli_pci_driver);
 284 }
 285
 286
 287 module_init(uli_init);
 288 module_exit(uli_exit);