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         uli_max_ports           = 4,
  48
  49         /* PCI configuration registers */
  50         ULI5287_BASE            = 0x90, /* sata0 phy SCR registers */
  51         ULI5287_OFFS            = 0x10, /* offset from sata0->sata1 phy regs */
  52         ULI5281_BASE            = 0x60, /* sata0 phy SCR  registers */
  53         ULI5281_OFFS            = 0x60, /* offset from sata0->sata1 phy regs */
  54 };
  55
  56 struct uli_priv {
  57         unsigned int            scr_cfg_addr[uli_max_ports];
  58 };
  59
  60 static int uli_init_one (struct pci_dev *pdev, const struct pci_device_id *ent);
  61 static u32 uli_scr_read (struct ata_port *ap, unsigned int sc_reg);
  62 static void uli_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val);
  63
  64 static const struct pci_device_id uli_pci_tbl[] = {
  65         { PCI_VENDOR_ID_AL, 0x5289, PCI_ANY_ID, PCI_ANY_ID, 0, 0, uli_5289 },
  66         { PCI_VENDOR_ID_AL, 0x5287, PCI_ANY_ID, PCI_ANY_ID, 0, 0, uli_5287 },
  67         { PCI_VENDOR_ID_AL, 0x5281, PCI_ANY_ID, PCI_ANY_ID, 0, 0, uli_5281 },
  68         { }     /* terminate list */
  69 };
  70
  71
  72 static struct pci_driver uli_pci_driver = {
  73         .name                   = DRV_NAME,
  74         .id_table               = uli_pci_tbl,
  75         .probe                  = uli_init_one,
  76         .remove                 = ata_pci_remove_one,
  77 };
  78
  79 static struct scsi_host_template uli_sht = {
  80         .module                 = THIS_MODULE,
  81         .name                   = DRV_NAME,
  82         .ioctl                  = ata_scsi_ioctl,
  83         .queuecommand           = ata_scsi_queuecmd,
  84         .eh_strategy_handler    = ata_scsi_error,
  85         .can_queue              = ATA_DEF_QUEUE,
  86         .this_id                = ATA_SHT_THIS_ID,
  87         .sg_tablesize           = LIBATA_MAX_PRD,
  88         .cmd_per_lun            = ATA_SHT_CMD_PER_LUN,
  89         .emulated               = ATA_SHT_EMULATED,
  90         .use_clustering         = ATA_SHT_USE_CLUSTERING,
  91         .proc_name              = DRV_NAME,
  92         .dma_boundary           = ATA_DMA_BOUNDARY,
  93         .slave_configure        = ata_scsi_slave_config,
  94         .bios_param             = ata_std_bios_param,
  95 };
  96
  97 static const struct ata_port_operations uli_ops = {
  98         .port_disable           = ata_port_disable,
  99
 100         .tf_load                = ata_tf_load,
 101         .tf_read                = ata_tf_read,
 102         .check_status           = ata_check_status,
 103         .exec_command           = ata_exec_command,
 104         .dev_select             = ata_std_dev_select,
 105
 106         .phy_reset              = sata_phy_reset,
 107
 108         .bmdma_setup            = ata_bmdma_setup,
 109         .bmdma_start            = ata_bmdma_start,
 110         .bmdma_stop             = ata_bmdma_stop,
 111         .bmdma_status           = ata_bmdma_status,
 112         .qc_prep                = ata_qc_prep,
 113         .qc_issue               = ata_qc_issue_prot,
 114
 115         .eng_timeout            = ata_eng_timeout,
 116
 117         .irq_handler            = ata_interrupt,
 118         .irq_clear              = ata_bmdma_irq_clear,
 119
 120         .scr_read               = uli_scr_read,
 121         .scr_write              = uli_scr_write,
 122
 123         .port_start             = ata_port_start,
 124         .port_stop              = ata_port_stop,
 125         .host_stop              = ata_host_stop,
 126 };
 127
 128 static struct ata_port_info uli_port_info = {
 129         .sht            = &uli_sht,
 130         .host_flags     = ATA_FLAG_SATA | ATA_FLAG_SATA_RESET |
 131                           ATA_FLAG_NO_LEGACY,
 132         .pio_mask       = 0x1f,         /* pio0-4 */
 133         .udma_mask      = 0x7f,         /* udma0-6 */
 134         .port_ops       = &uli_ops,
 135 };
 136
 137
 138 MODULE_AUTHOR("Peer Chen");
 139 MODULE_DESCRIPTION("low-level driver for ULi Electronics SATA controller");
 140 MODULE_LICENSE("GPL");
 141 MODULE_DEVICE_TABLE(pci, uli_pci_tbl);
 142 MODULE_VERSION(DRV_VERSION);
 143
 144 static unsigned int get_scr_cfg_addr(struct ata_port *ap, unsigned int sc_reg)
 145 {
 146         struct uli_priv *hpriv = ap->host_set->private_data;
 147         return hpriv->scr_cfg_addr[ap->port_no] + (4 * sc_reg);
 148 }
 149
 150 static u32 uli_scr_cfg_read (struct ata_port *ap, unsigned int sc_reg)
 151 {
 152         struct pci_dev *pdev = to_pci_dev(ap->host_set->dev);
 153         unsigned int cfg_addr = get_scr_cfg_addr(ap, sc_reg);
 154         u32 val;
 155
 156         pci_read_config_dword(pdev, cfg_addr, &val);
 157         return val;
 158 }
 159
 160 static void uli_scr_cfg_write (struct ata_port *ap, unsigned int scr, u32 val)
 161 {
 162         struct pci_dev *pdev = to_pci_dev(ap->host_set->dev);
 163         unsigned int cfg_addr = get_scr_cfg_addr(ap, scr);
 164
 165         pci_write_config_dword(pdev, cfg_addr, val);
 166 }
 167
 168 static u32 uli_scr_read (struct ata_port *ap, unsigned int sc_reg)
 169 {
 170         if (sc_reg > SCR_CONTROL)
 171                 return 0xffffffffU;
 172
 173         return uli_scr_cfg_read(ap, sc_reg);
 174 }
 175
 176 static void uli_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val)
 177 {
 178         if (sc_reg > SCR_CONTROL)       //SCR_CONTROL=2, SCR_ERROR=1, SCR_STATUS=0
 179                 return;
 180
 181         uli_scr_cfg_write(ap, sc_reg, val);
 182 }
 183
 184 static int uli_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
 185 {
 186         static int printed_version;
 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         struct uli_priv *hpriv;
 193
 194         if (!printed_version++)
 195                 dev_printk(KERN_INFO, &pdev->dev, "version " DRV_VERSION "\n");
 196
 197         rc = pci_enable_device(pdev);
 198         if (rc)
 199                 return rc;
 200
 201         rc = pci_request_regions(pdev, DRV_NAME);
 202         if (rc) {
 203                 pci_dev_busy = 1;
 204                 goto err_out;
 205         }
 206
 207         rc = pci_set_dma_mask(pdev, ATA_DMA_MASK);
 208         if (rc)
 209                 goto err_out_regions;
 210         rc = pci_set_consistent_dma_mask(pdev, ATA_DMA_MASK);
 211         if (rc)
 212                 goto err_out_regions;
 213
 214         ppi = &uli_port_info;
 215         probe_ent = ata_pci_init_native_mode(pdev, &ppi, ATA_PORT_PRIMARY | ATA_PORT_SECONDARY);
 216         if (!probe_ent) {
 217                 rc = -ENOMEM;
 218                 goto err_out_regions;
 219         }
 220
 221         hpriv = kzalloc(sizeof(*hpriv), GFP_KERNEL);
 222         if (!hpriv) {
 223                 rc = -ENOMEM;
 224                 goto err_out_probe_ent;
 225         }
 226
 227         probe_ent->private_data = hpriv;
 228
 229         switch (board_idx) {
 230         case uli_5287:
 231                 hpriv->scr_cfg_addr[0] = ULI5287_BASE;
 232                 hpriv->scr_cfg_addr[1] = ULI5287_BASE + ULI5287_OFFS;
 233                 probe_ent->n_ports = 4;
 234
 235                 probe_ent->port[2].cmd_addr = pci_resource_start(pdev, 0) + 8;
 236                 probe_ent->port[2].altstatus_addr =
 237                 probe_ent->port[2].ctl_addr =
 238                         (pci_resource_start(pdev, 1) | ATA_PCI_CTL_OFS) + 4;
 239                 probe_ent->port[2].bmdma_addr = pci_resource_start(pdev, 4) + 16;
 240                 hpriv->scr_cfg_addr[2] = ULI5287_BASE + ULI5287_OFFS*4;
 241
 242                 probe_ent->port[3].cmd_addr = pci_resource_start(pdev, 2) + 8;
 243                 probe_ent->port[3].altstatus_addr =
 244                 probe_ent->port[3].ctl_addr =
 245                         (pci_resource_start(pdev, 3) | ATA_PCI_CTL_OFS) + 4;
 246                 probe_ent->port[3].bmdma_addr = pci_resource_start(pdev, 4) + 24;
 247                 hpriv->scr_cfg_addr[3] = ULI5287_BASE + ULI5287_OFFS*5;
 248
 249                 ata_std_ports(&probe_ent->port[2]);
 250                 ata_std_ports(&probe_ent->port[3]);
 251                 break;
 252
 253         case uli_5289:
 254                 hpriv->scr_cfg_addr[0] = ULI5287_BASE;
 255                 hpriv->scr_cfg_addr[1] = ULI5287_BASE + ULI5287_OFFS;
 256                 break;
 257
 258         case uli_5281:
 259                 hpriv->scr_cfg_addr[0] = ULI5281_BASE;
 260                 hpriv->scr_cfg_addr[1] = ULI5281_BASE + ULI5281_OFFS;
 261                 break;
 262
 263         default:
 264                 BUG();
 265                 break;
 266         }
 267
 268         pci_set_master(pdev);
 269         pci_intx(pdev, 1);
 270
 271         /* FIXME: check ata_device_add return value */
 272         ata_device_add(probe_ent);
 273         kfree(probe_ent);
 274
 275         return 0;
 276
 277 err_out_probe_ent:
 278         kfree(probe_ent);
 279 err_out_regions:
 280         pci_release_regions(pdev);
 281 err_out:
 282         if (!pci_dev_busy)
 283                 pci_disable_device(pdev);
 284         return rc;
 285
 286 }
 287
 288 static int __init uli_init(void)
 289 {
 290         return pci_module_init(&uli_pci_driver);
 291 }
 292
 293 static void __exit uli_exit(void)
 294 {
 295         pci_unregister_driver(&uli_pci_driver);
 296 }
 297
 298
 299 module_init(uli_init);
 300 module_exit(uli_exit);