drivers/ata/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/kernel.h>
  28 #include <linux/module.h>
  29 #include <linux/pci.h>
  30 #include <linux/init.h>
  31 #include <linux/blkdev.h>
  32 #include <linux/delay.h>
  33 #include <linux/interrupt.h>
  34 #include <linux/device.h>
  35 #include <scsi/scsi_host.h>
  36 #include <linux/libata.h>
  37
  38 #define DRV_NAME        "sata_uli"
  39 #define DRV_VERSION     "1.2"
  40
  41 enum {
  42         uli_5289                = 0,
  43         uli_5287                = 1,
  44         uli_5281                = 2,
  45
  46         uli_max_ports           = 4,
  47
  48         /* PCI configuration registers */
  49         ULI5287_BASE            = 0x90, /* sata0 phy SCR registers */
  50         ULI5287_OFFS            = 0x10, /* offset from sata0->sata1 phy regs */
  51         ULI5281_BASE            = 0x60, /* sata0 phy SCR  registers */
  52         ULI5281_OFFS            = 0x60, /* offset from sata0->sata1 phy regs */
  53 };
  54
  55 struct uli_priv {
  56         unsigned int            scr_cfg_addr[uli_max_ports];
  57 };
  58
  59 static int uli_init_one (struct pci_dev *pdev, const struct pci_device_id *ent);
  60 static u32 uli_scr_read (struct ata_port *ap, unsigned int sc_reg);
  61 static void uli_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val);
  62
  63 static const struct pci_device_id uli_pci_tbl[] = {
  64         { PCI_VDEVICE(AL, 0x5289), uli_5289 },
  65         { PCI_VDEVICE(AL, 0x5287), uli_5287 },
  66         { PCI_VDEVICE(AL, 0x5281), uli_5281 },
  67
  68         { }     /* terminate list */
  69 };
  70
  71 static struct pci_driver uli_pci_driver = {
  72         .name                   = DRV_NAME,
  73         .id_table               = uli_pci_tbl,
  74         .probe                  = uli_init_one,
  75         .remove                 = ata_pci_remove_one,
  76 };
  77
  78 static struct scsi_host_template uli_sht = {
  79         .module                 = THIS_MODULE,
  80         .name                   = DRV_NAME,
  81         .ioctl                  = ata_scsi_ioctl,
  82         .queuecommand           = ata_scsi_queuecmd,
  83         .can_queue              = ATA_DEF_QUEUE,
  84         .this_id                = ATA_SHT_THIS_ID,
  85         .sg_tablesize           = LIBATA_MAX_PRD,
  86         .cmd_per_lun            = ATA_SHT_CMD_PER_LUN,
  87         .emulated               = ATA_SHT_EMULATED,
  88         .use_clustering         = ATA_SHT_USE_CLUSTERING,
  89         .proc_name              = DRV_NAME,
  90         .dma_boundary           = ATA_DMA_BOUNDARY,
  91         .slave_configure        = ata_scsi_slave_config,
  92         .slave_destroy          = ata_scsi_slave_destroy,
  93         .bios_param             = ata_std_bios_param,
  94 };
  95
  96 static const struct ata_port_operations uli_ops = {
  97         .port_disable           = ata_port_disable,
  98
  99         .tf_load                = ata_tf_load,
 100         .tf_read                = ata_tf_read,
 101         .check_status           = ata_check_status,
 102         .exec_command           = ata_exec_command,
 103         .dev_select             = ata_std_dev_select,
 104
 105         .bmdma_setup            = ata_bmdma_setup,
 106         .bmdma_start            = ata_bmdma_start,
 107         .bmdma_stop             = ata_bmdma_stop,
 108         .bmdma_status           = ata_bmdma_status,
 109         .qc_prep                = ata_qc_prep,
 110         .qc_issue               = ata_qc_issue_prot,
 111         .data_xfer              = ata_data_xfer,
 112
 113         .freeze                 = ata_bmdma_freeze,
 114         .thaw                   = ata_bmdma_thaw,
 115         .error_handler          = ata_bmdma_error_handler,
 116         .post_internal_cmd      = ata_bmdma_post_internal_cmd,
 117
 118         .irq_clear              = ata_bmdma_irq_clear,
 119         .irq_on                 = ata_irq_on,
 120         .irq_ack                = ata_irq_ack,
 121
 122         .scr_read               = uli_scr_read,
 123         .scr_write              = uli_scr_write,
 124
 125         .port_start             = ata_port_start,
 126 };
 127
 128 static const struct ata_port_info uli_port_info = {
 129         .flags          = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
 130                           ATA_FLAG_IGN_SIMPLEX,
 131         .pio_mask       = 0x1f,         /* pio0-4 */
 132         .udma_mask      = 0x7f,         /* udma0-6 */
 133         .port_ops       = &uli_ops,
 134 };
 135
 136
 137 MODULE_AUTHOR("Peer Chen");
 138 MODULE_DESCRIPTION("low-level driver for ULi Electronics SATA controller");
 139 MODULE_LICENSE("GPL");
 140 MODULE_DEVICE_TABLE(pci, uli_pci_tbl);
 141 MODULE_VERSION(DRV_VERSION);
 142
 143 static unsigned int get_scr_cfg_addr(struct ata_port *ap, unsigned int sc_reg)
 144 {
 145         struct uli_priv *hpriv = ap->host->private_data;
 146         return hpriv->scr_cfg_addr[ap->port_no] + (4 * sc_reg);
 147 }
 148
 149 static u32 uli_scr_cfg_read (struct ata_port *ap, unsigned int sc_reg)
 150 {
 151         struct pci_dev *pdev = to_pci_dev(ap->host->dev);
 152         unsigned int cfg_addr = get_scr_cfg_addr(ap, sc_reg);
 153         u32 val;
 154
 155         pci_read_config_dword(pdev, cfg_addr, &val);
 156         return val;
 157 }
 158
 159 static void uli_scr_cfg_write (struct ata_port *ap, unsigned int scr, u32 val)
 160 {
 161         struct pci_dev *pdev = to_pci_dev(ap->host->dev);
 162         unsigned int cfg_addr = get_scr_cfg_addr(ap, scr);
 163
 164         pci_write_config_dword(pdev, cfg_addr, val);
 165 }
 166
 167 static u32 uli_scr_read (struct ata_port *ap, unsigned int sc_reg)
 168 {
 169         if (sc_reg > SCR_CONTROL)
 170                 return 0xffffffffU;
 171
 172         return uli_scr_cfg_read(ap, sc_reg);
 173 }
 174
 175 static void uli_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val)
 176 {
 177         if (sc_reg > SCR_CONTROL)       //SCR_CONTROL=2, SCR_ERROR=1, SCR_STATUS=0
 178                 return;
 179
 180         uli_scr_cfg_write(ap, sc_reg, val);
 181 }
 182
 183 static int uli_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
 184 {
 185         static int printed_version;
 186         const struct ata_port_info *ppi[] = { &uli_port_info, NULL };
 187         unsigned int board_idx = (unsigned int) ent->driver_data;
 188         struct ata_host *host;
 189         struct uli_priv *hpriv;
 190         void __iomem * const *iomap;
 191         struct ata_ioports *ioaddr;
 192         int n_ports, rc;
 193
 194         if (!printed_version++)
 195                 dev_printk(KERN_INFO, &pdev->dev, "version " DRV_VERSION "\n");
 196
 197         rc = pcim_enable_device(pdev);
 198         if (rc)
 199                 return rc;
 200
 201         n_ports = 2;
 202         if (board_idx == uli_5287)
 203                 n_ports = 4;
 204
 205         /* allocate the host */
 206         host = ata_host_alloc_pinfo(&pdev->dev, ppi, n_ports);
 207         if (!host)
 208                 return -ENOMEM;
 209
 210         hpriv = devm_kzalloc(&pdev->dev, sizeof(*hpriv), GFP_KERNEL);
 211         if (!hpriv)
 212                 return -ENOMEM;
 213         host->private_data = hpriv;
 214
 215         /* the first two ports are standard SFF */
 216         rc = ata_pci_init_native_host(host);
 217         if (rc)
 218                 return rc;
 219
 220         rc = ata_pci_init_bmdma(host);
 221         if (rc)
 222                 return rc;
 223
 224         iomap = host->iomap;
 225
 226         switch (board_idx) {
 227         case uli_5287:
 228                 /* If there are four, the last two live right after
 229                  * the standard SFF ports.
 230                  */
 231                 hpriv->scr_cfg_addr[0] = ULI5287_BASE;
 232                 hpriv->scr_cfg_addr[1] = ULI5287_BASE + ULI5287_OFFS;
 233
 234                 ioaddr = &host->ports[2]->ioaddr;
 235                 ioaddr->cmd_addr = iomap[0] + 8;
 236                 ioaddr->altstatus_addr =
 237                 ioaddr->ctl_addr = (void __iomem *)
 238                         ((unsigned long)iomap[1] | ATA_PCI_CTL_OFS) + 4;
 239                 ioaddr->bmdma_addr = iomap[4] + 16;
 240                 hpriv->scr_cfg_addr[2] = ULI5287_BASE + ULI5287_OFFS*4;
 241                 ata_std_ports(ioaddr);
 242
 243                 ioaddr = &host->ports[3]->ioaddr;
 244                 ioaddr->cmd_addr = iomap[2] + 8;
 245                 ioaddr->altstatus_addr =
 246                 ioaddr->ctl_addr = (void __iomem *)
 247                         ((unsigned long)iomap[3] | ATA_PCI_CTL_OFS) + 4;
 248                 ioaddr->bmdma_addr = iomap[4] + 24;
 249                 hpriv->scr_cfg_addr[3] = ULI5287_BASE + ULI5287_OFFS*5;
 250                 ata_std_ports(ioaddr);
 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         return ata_host_activate(host, pdev->irq, ata_interrupt, IRQF_SHARED,
 271                                  &uli_sht);
 272 }
 273
 274 static int __init uli_init(void)
 275 {
 276         return pci_register_driver(&uli_pci_driver);
 277 }
 278
 279 static void __exit uli_exit(void)
 280 {
 281         pci_unregister_driver(&uli_pci_driver);
 282 }
 283
 284
 285 module_init(uli_init);
 286 module_exit(uli_exit);