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/gfp.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     "1.3"
  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 int uli_scr_read(struct ata_link *link, unsigned int sc_reg, u32 *val);
  62 static int uli_scr_write(struct ata_link *link, unsigned int sc_reg, u32 val);
  63
  64 static const struct pci_device_id uli_pci_tbl[] = {
  65         { PCI_VDEVICE(AL, 0x5289), uli_5289 },
  66         { PCI_VDEVICE(AL, 0x5287), uli_5287 },
  67         { PCI_VDEVICE(AL, 0x5281), uli_5281 },
  68
  69         { }     /* terminate list */
  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         ATA_BMDMA_SHT(DRV_NAME),
  81 };
  82
  83 static struct ata_port_operations uli_ops = {
  84         .inherits               = &ata_bmdma_port_ops,
  85         .scr_read               = uli_scr_read,
  86         .scr_write              = uli_scr_write,
  87         .hardreset              = ATA_OP_NULL,
  88 };
  89
  90 static const struct ata_port_info uli_port_info = {
  91         .flags          = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
  92                           ATA_FLAG_IGN_SIMPLEX,
  93         .pio_mask       = ATA_PIO4,
  94         .udma_mask      = ATA_UDMA6,
  95         .port_ops       = &uli_ops,
  96 };
  97
  98
  99 MODULE_AUTHOR("Peer Chen");
 100 MODULE_DESCRIPTION("low-level driver for ULi Electronics SATA controller");
 101 MODULE_LICENSE("GPL");
 102 MODULE_DEVICE_TABLE(pci, uli_pci_tbl);
 103 MODULE_VERSION(DRV_VERSION);
 104
 105 static unsigned int get_scr_cfg_addr(struct ata_port *ap, unsigned int sc_reg)
 106 {
 107         struct uli_priv *hpriv = ap->host->private_data;
 108         return hpriv->scr_cfg_addr[ap->port_no] + (4 * sc_reg);
 109 }
 110
 111 static u32 uli_scr_cfg_read(struct ata_link *link, unsigned int sc_reg)
 112 {
 113         struct pci_dev *pdev = to_pci_dev(link->ap->host->dev);
 114         unsigned int cfg_addr = get_scr_cfg_addr(link->ap, sc_reg);
 115         u32 val;
 116
 117         pci_read_config_dword(pdev, cfg_addr, &val);
 118         return val;
 119 }
 120
 121 static void uli_scr_cfg_write(struct ata_link *link, unsigned int scr, u32 val)
 122 {
 123         struct pci_dev *pdev = to_pci_dev(link->ap->host->dev);
 124         unsigned int cfg_addr = get_scr_cfg_addr(link->ap, scr);
 125
 126         pci_write_config_dword(pdev, cfg_addr, val);
 127 }
 128
 129 static int uli_scr_read(struct ata_link *link, unsigned int sc_reg, u32 *val)
 130 {
 131         if (sc_reg > SCR_CONTROL)
 132                 return -EINVAL;
 133
 134         *val = uli_scr_cfg_read(link, sc_reg);
 135         return 0;
 136 }
 137
 138 static int uli_scr_write(struct ata_link *link, unsigned int sc_reg, u32 val)
 139 {
 140         if (sc_reg > SCR_CONTROL) //SCR_CONTROL=2, SCR_ERROR=1, SCR_STATUS=0
 141                 return -EINVAL;
 142
 143         uli_scr_cfg_write(link, sc_reg, val);
 144         return 0;
 145 }
 146
 147 static int uli_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 148 {
 149         static int printed_version;
 150         const struct ata_port_info *ppi[] = { &uli_port_info, NULL };
 151         unsigned int board_idx = (unsigned int) ent->driver_data;
 152         struct ata_host *host;
 153         struct uli_priv *hpriv;
 154         void __iomem * const *iomap;
 155         struct ata_ioports *ioaddr;
 156         int n_ports, rc;
 157
 158         if (!printed_version++)
 159                 dev_printk(KERN_INFO, &pdev->dev, "version " DRV_VERSION "\n");
 160
 161         rc = pcim_enable_device(pdev);
 162         if (rc)
 163                 return rc;
 164
 165         n_ports = 2;
 166         if (board_idx == uli_5287)
 167                 n_ports = 4;
 168
 169         /* allocate the host */
 170         host = ata_host_alloc_pinfo(&pdev->dev, ppi, n_ports);
 171         if (!host)
 172                 return -ENOMEM;
 173
 174         hpriv = devm_kzalloc(&pdev->dev, sizeof(*hpriv), GFP_KERNEL);
 175         if (!hpriv)
 176                 return -ENOMEM;
 177         host->private_data = hpriv;
 178
 179         /* the first two ports are standard SFF */
 180         rc = ata_pci_sff_init_host(host);
 181         if (rc)
 182                 return rc;
 183
 184         ata_pci_bmdma_init(host);
 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_bmdma_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);