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     "1.3"
  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 int uli_scr_read(struct ata_port *ap, unsigned int sc_reg, u32 *val);
  61 static int 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         ATA_BMDMA_SHT(DRV_NAME),
  80 };
  81
  82 static struct ata_port_operations uli_ops = {
  83         .inherits               = &ata_bmdma_port_ops,
  84         .scr_read               = uli_scr_read,
  85         .scr_write              = uli_scr_write,
  86 };
  87
  88 static const struct ata_port_info uli_port_info = {
  89         .flags          = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
  90                           ATA_FLAG_IGN_SIMPLEX,
  91         .pio_mask       = 0x1f,         /* pio0-4 */
  92         .udma_mask      = ATA_UDMA6,
  93         .port_ops       = &uli_ops,
  94 };
  95
  96
  97 MODULE_AUTHOR("Peer Chen");
  98 MODULE_DESCRIPTION("low-level driver for ULi Electronics SATA controller");
  99 MODULE_LICENSE("GPL");
 100 MODULE_DEVICE_TABLE(pci, uli_pci_tbl);
 101 MODULE_VERSION(DRV_VERSION);
 102
 103 static unsigned int get_scr_cfg_addr(struct ata_port *ap, unsigned int sc_reg)
 104 {
 105         struct uli_priv *hpriv = ap->host->private_data;
 106         return hpriv->scr_cfg_addr[ap->port_no] + (4 * sc_reg);
 107 }
 108
 109 static u32 uli_scr_cfg_read(struct ata_port *ap, unsigned int sc_reg)
 110 {
 111         struct pci_dev *pdev = to_pci_dev(ap->host->dev);
 112         unsigned int cfg_addr = get_scr_cfg_addr(ap, sc_reg);
 113         u32 val;
 114
 115         pci_read_config_dword(pdev, cfg_addr, &val);
 116         return val;
 117 }
 118
 119 static void uli_scr_cfg_write(struct ata_port *ap, unsigned int scr, u32 val)
 120 {
 121         struct pci_dev *pdev = to_pci_dev(ap->host->dev);
 122         unsigned int cfg_addr = get_scr_cfg_addr(ap, scr);
 123
 124         pci_write_config_dword(pdev, cfg_addr, val);
 125 }
 126
 127 static int uli_scr_read(struct ata_port *ap, unsigned int sc_reg, u32 *val)
 128 {
 129         if (sc_reg > SCR_CONTROL)
 130                 return -EINVAL;
 131
 132         *val = uli_scr_cfg_read(ap, sc_reg);
 133         return 0;
 134 }
 135
 136 static int uli_scr_write(struct ata_port *ap, unsigned int sc_reg, u32 val)
 137 {
 138         if (sc_reg > SCR_CONTROL) //SCR_CONTROL=2, SCR_ERROR=1, SCR_STATUS=0
 139                 return -EINVAL;
 140
 141         uli_scr_cfg_write(ap, sc_reg, val);
 142         return 0;
 143 }
 144
 145 static int uli_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 146 {
 147         static int printed_version;
 148         const struct ata_port_info *ppi[] = { &uli_port_info, NULL };
 149         unsigned int board_idx = (unsigned int) ent->driver_data;
 150         struct ata_host *host;
 151         struct uli_priv *hpriv;
 152         void __iomem * const *iomap;
 153         struct ata_ioports *ioaddr;
 154         int n_ports, rc;
 155
 156         if (!printed_version++)
 157                 dev_printk(KERN_INFO, &pdev->dev, "version " DRV_VERSION "\n");
 158
 159         rc = pcim_enable_device(pdev);
 160         if (rc)
 161                 return rc;
 162
 163         n_ports = 2;
 164         if (board_idx == uli_5287)
 165                 n_ports = 4;
 166
 167         /* allocate the host */
 168         host = ata_host_alloc_pinfo(&pdev->dev, ppi, n_ports);
 169         if (!host)
 170                 return -ENOMEM;
 171
 172         hpriv = devm_kzalloc(&pdev->dev, sizeof(*hpriv), GFP_KERNEL);
 173         if (!hpriv)
 174                 return -ENOMEM;
 175         host->private_data = hpriv;
 176
 177         /* the first two ports are standard SFF */
 178         rc = ata_pci_sff_init_host(host);
 179         if (rc)
 180                 return rc;
 181
 182         rc = ata_pci_bmdma_init(host);
 183         if (rc)
 184                 return rc;
 185
 186         iomap = host->iomap;
 187
 188         switch (board_idx) {
 189         case uli_5287:
 190                 /* If there are four, the last two live right after
 191                  * the standard SFF ports.
 192                  */
 193                 hpriv->scr_cfg_addr[0] = ULI5287_BASE;
 194                 hpriv->scr_cfg_addr[1] = ULI5287_BASE + ULI5287_OFFS;
 195
 196                 ioaddr = &host->ports[2]->ioaddr;
 197                 ioaddr->cmd_addr = iomap[0] + 8;
 198                 ioaddr->altstatus_addr =
 199                 ioaddr->ctl_addr = (void __iomem *)
 200                         ((unsigned long)iomap[1] | ATA_PCI_CTL_OFS) + 4;
 201                 ioaddr->bmdma_addr = iomap[4] + 16;
 202                 hpriv->scr_cfg_addr[2] = ULI5287_BASE + ULI5287_OFFS*4;
 203                 ata_sff_std_ports(ioaddr);
 204
 205                 ata_port_desc(host->ports[2],
 206                         "cmd 0x%llx ctl 0x%llx bmdma 0x%llx",
 207                         (unsigned long long)pci_resource_start(pdev, 0) + 8,
 208                         ((unsigned long long)pci_resource_start(pdev, 1) | ATA_PCI_CTL_OFS) + 4,
 209                         (unsigned long long)pci_resource_start(pdev, 4) + 16);
 210
 211                 ioaddr = &host->ports[3]->ioaddr;
 212                 ioaddr->cmd_addr = iomap[2] + 8;
 213                 ioaddr->altstatus_addr =
 214                 ioaddr->ctl_addr = (void __iomem *)
 215                         ((unsigned long)iomap[3] | ATA_PCI_CTL_OFS) + 4;
 216                 ioaddr->bmdma_addr = iomap[4] + 24;
 217                 hpriv->scr_cfg_addr[3] = ULI5287_BASE + ULI5287_OFFS*5;
 218                 ata_sff_std_ports(ioaddr);
 219
 220                 ata_port_desc(host->ports[2],
 221                         "cmd 0x%llx ctl 0x%llx bmdma 0x%llx",
 222                         (unsigned long long)pci_resource_start(pdev, 2) + 9,
 223                         ((unsigned long long)pci_resource_start(pdev, 3) | ATA_PCI_CTL_OFS) + 4,
 224                         (unsigned long long)pci_resource_start(pdev, 4) + 24);
 225
 226                 break;
 227
 228         case uli_5289:
 229                 hpriv->scr_cfg_addr[0] = ULI5287_BASE;
 230                 hpriv->scr_cfg_addr[1] = ULI5287_BASE + ULI5287_OFFS;
 231                 break;
 232
 233         case uli_5281:
 234                 hpriv->scr_cfg_addr[0] = ULI5281_BASE;
 235                 hpriv->scr_cfg_addr[1] = ULI5281_BASE + ULI5281_OFFS;
 236                 break;
 237
 238         default:
 239                 BUG();
 240                 break;
 241         }
 242
 243         pci_set_master(pdev);
 244         pci_intx(pdev, 1);
 245         return ata_host_activate(host, pdev->irq, ata_sff_interrupt,
 246                                  IRQF_SHARED, &uli_sht);
 247 }
 248
 249 static int __init uli_init(void)
 250 {
 251         return pci_register_driver(&uli_pci_driver);
 252 }
 253
 254 static void __exit uli_exit(void)
 255 {
 256         pci_unregister_driver(&uli_pci_driver);
 257 }
 258
 259
 260 module_init(uli_init);
 261 module_exit(uli_exit);