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 };
 117
 118 static struct ata_port_info uli_port_info = {
 119         .sht            = &uli_sht,
 120         .host_flags     = ATA_FLAG_SATA | ATA_FLAG_SATA_RESET |
 121                           ATA_FLAG_NO_LEGACY,
 122         .pio_mask       = 0x03,         //support pio mode 4 (FIXME)
 123         .udma_mask      = 0x7f,         //support udma mode 6
 124         .port_ops       = &uli_ops,
 125 };
 126
 127
 128 MODULE_AUTHOR("Peer Chen");
 129 MODULE_DESCRIPTION("low-level driver for ULi Electronics SATA controller");
 130 MODULE_LICENSE("GPL");
 131 MODULE_DEVICE_TABLE(pci, uli_pci_tbl);
 132 MODULE_VERSION(DRV_VERSION);
 133
 134 static unsigned int get_scr_cfg_addr(struct ata_port *ap, unsigned int sc_reg)
 135 {
 136         return ap->ioaddr.scr_addr + (4 * sc_reg);
 137 }
 138
 139 static u32 uli_scr_cfg_read (struct ata_port *ap, unsigned int sc_reg)
 140 {
 141         struct pci_dev *pdev = to_pci_dev(ap->host_set->dev);
 142         unsigned int cfg_addr = get_scr_cfg_addr(ap, sc_reg);
 143         u32 val;
 144
 145         pci_read_config_dword(pdev, cfg_addr, &val);
 146         return val;
 147 }
 148
 149 static void uli_scr_cfg_write (struct ata_port *ap, unsigned int scr, u32 val)
 150 {
 151         struct pci_dev *pdev = to_pci_dev(ap->host_set->dev);
 152         unsigned int cfg_addr = get_scr_cfg_addr(ap, scr);
 153
 154         pci_write_config_dword(pdev, cfg_addr, val);
 155 }
 156
 157 static u32 uli_scr_read (struct ata_port *ap, unsigned int sc_reg)
 158 {
 159         if (sc_reg > SCR_CONTROL)
 160                 return 0xffffffffU;
 161
 162         return uli_scr_cfg_read(ap, sc_reg);
 163 }
 164
 165 static void uli_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val)
 166 {
 167         if (sc_reg > SCR_CONTROL)       //SCR_CONTROL=2, SCR_ERROR=1, SCR_STATUS=0
 168                 return;
 169
 170         uli_scr_cfg_write(ap, sc_reg, val);
 171 }
 172
 173 /* move to PCI layer, integrate w/ MSI stuff */
 174 static void pci_enable_intx(struct pci_dev *pdev)
 175 {
 176         u16 pci_command;
 177
 178         pci_read_config_word(pdev, PCI_COMMAND, &pci_command);
 179         if (pci_command & PCI_COMMAND_INTX_DISABLE) {
 180                 pci_command &= ~PCI_COMMAND_INTX_DISABLE;
 181                 pci_write_config_word(pdev, PCI_COMMAND, pci_command);
 182         }
 183 }
 184
 185 static int uli_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
 186 {
 187         struct ata_probe_ent *probe_ent;
 188         struct ata_port_info *ppi;
 189         int rc;
 190         unsigned int board_idx = (unsigned int) ent->driver_data;
 191         int pci_dev_busy = 0;
 192
 193         rc = pci_enable_device(pdev);
 194         if (rc)
 195                 return rc;
 196
 197         rc = pci_request_regions(pdev, DRV_NAME);
 198         if (rc) {
 199                 pci_dev_busy = 1;
 200                 goto err_out;
 201         }
 202
 203         rc = pci_set_dma_mask(pdev, ATA_DMA_MASK);
 204         if (rc)
 205                 goto err_out_regions;
 206         rc = pci_set_consistent_dma_mask(pdev, ATA_DMA_MASK);
 207         if (rc)
 208                 goto err_out_regions;
 209
 210         ppi = &uli_port_info;
 211         probe_ent = ata_pci_init_native_mode(pdev, &ppi);
 212         if (!probe_ent) {
 213                 rc = -ENOMEM;
 214                 goto err_out_regions;
 215         }
 216
 217         switch (board_idx) {
 218         case uli_5287:
 219                 probe_ent->port[0].scr_addr = ULI5287_BASE;
 220                 probe_ent->port[1].scr_addr = ULI5287_BASE + ULI5287_OFFS;
 221                 probe_ent->n_ports = 4;
 222
 223                 probe_ent->port[2].cmd_addr = pci_resource_start(pdev, 0) + 8;
 224                 probe_ent->port[2].altstatus_addr =
 225                 probe_ent->port[2].ctl_addr =
 226                         (pci_resource_start(pdev, 1) | ATA_PCI_CTL_OFS) + 4;
 227                 probe_ent->port[2].bmdma_addr = pci_resource_start(pdev, 4) + 16;
 228                 probe_ent->port[2].scr_addr = ULI5287_BASE + ULI5287_OFFS*4;
 229
 230                 probe_ent->port[3].cmd_addr = pci_resource_start(pdev, 2) + 8;
 231                 probe_ent->port[3].altstatus_addr =
 232                 probe_ent->port[3].ctl_addr =
 233                         (pci_resource_start(pdev, 3) | ATA_PCI_CTL_OFS) + 4;
 234                 probe_ent->port[3].bmdma_addr = pci_resource_start(pdev, 4) + 24;
 235                 probe_ent->port[3].scr_addr = ULI5287_BASE + ULI5287_OFFS*5;
 236
 237                 ata_std_ports(&probe_ent->port[2]);
 238                 ata_std_ports(&probe_ent->port[3]);
 239                 break;
 240
 241         case uli_5289:
 242                 probe_ent->port[0].scr_addr = ULI5287_BASE;
 243                 probe_ent->port[1].scr_addr = ULI5287_BASE + ULI5287_OFFS;
 244                 break;
 245
 246         case uli_5281:
 247                 probe_ent->port[0].scr_addr = ULI5281_BASE;
 248                 probe_ent->port[1].scr_addr = ULI5281_BASE + ULI5281_OFFS;
 249                 break;
 250
 251         default:
 252                 BUG();
 253                 break;
 254         }
 255
 256         pci_set_master(pdev);
 257         pci_enable_intx(pdev);
 258
 259         /* FIXME: check ata_device_add return value */
 260         ata_device_add(probe_ent);
 261         kfree(probe_ent);
 262
 263         return 0;
 264
 265 err_out_regions:
 266         pci_release_regions(pdev);
 267
 268 err_out:
 269         if (!pci_dev_busy)
 270                 pci_disable_device(pdev);
 271         return rc;
 272
 273 }
 274
 275 static int __init uli_init(void)
 276 {
 277         return pci_module_init(&uli_pci_driver);
 278 }
 279
 280 static void __exit uli_exit(void)
 281 {
 282         pci_unregister_driver(&uli_pci_driver);
 283 }
 284
 285
 286 module_init(uli_init);
 287 module_exit(uli_exit);