linux/drivers/ata/sata_uli.c
<<
>>
Prefs
   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
  42enum {
  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
  56struct uli_priv {
  57        unsigned int            scr_cfg_addr[uli_max_ports];
  58};
  59
  60static int uli_init_one(struct pci_dev *pdev, const struct pci_device_id *ent);
  61static int uli_scr_read(struct ata_link *link, unsigned int sc_reg, u32 *val);
  62static int uli_scr_write(struct ata_link *link, unsigned int sc_reg, u32 val);
  63
  64static 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
  72static 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
  79static struct scsi_host_template uli_sht = {
  80        ATA_BMDMA_SHT(DRV_NAME),
  81};
  82
  83static 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
  90static const struct ata_port_info uli_port_info = {
  91        .flags          = ATA_FLAG_SATA | ATA_FLAG_IGN_SIMPLEX,
  92        .pio_mask       = ATA_PIO4,
  93        .udma_mask      = ATA_UDMA6,
  94        .port_ops       = &uli_ops,
  95};
  96
  97
  98MODULE_AUTHOR("Peer Chen");
  99MODULE_DESCRIPTION("low-level driver for ULi Electronics SATA controller");
 100MODULE_LICENSE("GPL");
 101MODULE_DEVICE_TABLE(pci, uli_pci_tbl);
 102MODULE_VERSION(DRV_VERSION);
 103
 104static unsigned int get_scr_cfg_addr(struct ata_port *ap, unsigned int sc_reg)
 105{
 106        struct uli_priv *hpriv = ap->host->private_data;
 107        return hpriv->scr_cfg_addr[ap->port_no] + (4 * sc_reg);
 108}
 109
 110static u32 uli_scr_cfg_read(struct ata_link *link, unsigned int sc_reg)
 111{
 112        struct pci_dev *pdev = to_pci_dev(link->ap->host->dev);
 113        unsigned int cfg_addr = get_scr_cfg_addr(link->ap, sc_reg);
 114        u32 val;
 115
 116        pci_read_config_dword(pdev, cfg_addr, &val);
 117        return val;
 118}
 119
 120static void uli_scr_cfg_write(struct ata_link *link, unsigned int scr, u32 val)
 121{
 122        struct pci_dev *pdev = to_pci_dev(link->ap->host->dev);
 123        unsigned int cfg_addr = get_scr_cfg_addr(link->ap, scr);
 124
 125        pci_write_config_dword(pdev, cfg_addr, val);
 126}
 127
 128static int uli_scr_read(struct ata_link *link, unsigned int sc_reg, u32 *val)
 129{
 130        if (sc_reg > SCR_CONTROL)
 131                return -EINVAL;
 132
 133        *val = uli_scr_cfg_read(link, sc_reg);
 134        return 0;
 135}
 136
 137static int uli_scr_write(struct ata_link *link, unsigned int sc_reg, u32 val)
 138{
 139        if (sc_reg > SCR_CONTROL) //SCR_CONTROL=2, SCR_ERROR=1, SCR_STATUS=0
 140                return -EINVAL;
 141
 142        uli_scr_cfg_write(link, sc_reg, val);
 143        return 0;
 144}
 145
 146static int uli_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 147{
 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        ata_print_version_once(&pdev->dev, DRV_VERSION);
 157
 158        rc = pcim_enable_device(pdev);
 159        if (rc)
 160                return rc;
 161
 162        n_ports = 2;
 163        if (board_idx == uli_5287)
 164                n_ports = 4;
 165
 166        /* allocate the host */
 167        host = ata_host_alloc_pinfo(&pdev->dev, ppi, n_ports);
 168        if (!host)
 169                return -ENOMEM;
 170
 171        hpriv = devm_kzalloc(&pdev->dev, sizeof(*hpriv), GFP_KERNEL);
 172        if (!hpriv)
 173                return -ENOMEM;
 174        host->private_data = hpriv;
 175
 176        /* the first two ports are standard SFF */
 177        rc = ata_pci_sff_init_host(host);
 178        if (rc)
 179                return rc;
 180
 181        ata_pci_bmdma_init(host);
 182
 183        iomap = host->iomap;
 184
 185        switch (board_idx) {
 186        case uli_5287:
 187                /* If there are four, the last two live right after
 188                 * the standard SFF ports.
 189                 */
 190                hpriv->scr_cfg_addr[0] = ULI5287_BASE;
 191                hpriv->scr_cfg_addr[1] = ULI5287_BASE + ULI5287_OFFS;
 192
 193                ioaddr = &host->ports[2]->ioaddr;
 194                ioaddr->cmd_addr = iomap[0] + 8;
 195                ioaddr->altstatus_addr =
 196                ioaddr->ctl_addr = (void __iomem *)
 197                        ((unsigned long)iomap[1] | ATA_PCI_CTL_OFS) + 4;
 198                ioaddr->bmdma_addr = iomap[4] + 16;
 199                hpriv->scr_cfg_addr[2] = ULI5287_BASE + ULI5287_OFFS*4;
 200                ata_sff_std_ports(ioaddr);
 201
 202                ata_port_desc(host->ports[2],
 203                        "cmd 0x%llx ctl 0x%llx bmdma 0x%llx",
 204                        (unsigned long long)pci_resource_start(pdev, 0) + 8,
 205                        ((unsigned long long)pci_resource_start(pdev, 1) | ATA_PCI_CTL_OFS) + 4,
 206                        (unsigned long long)pci_resource_start(pdev, 4) + 16);
 207
 208                ioaddr = &host->ports[3]->ioaddr;
 209                ioaddr->cmd_addr = iomap[2] + 8;
 210                ioaddr->altstatus_addr =
 211                ioaddr->ctl_addr = (void __iomem *)
 212                        ((unsigned long)iomap[3] | ATA_PCI_CTL_OFS) + 4;
 213                ioaddr->bmdma_addr = iomap[4] + 24;
 214                hpriv->scr_cfg_addr[3] = ULI5287_BASE + ULI5287_OFFS*5;
 215                ata_sff_std_ports(ioaddr);
 216
 217                ata_port_desc(host->ports[2],
 218                        "cmd 0x%llx ctl 0x%llx bmdma 0x%llx",
 219                        (unsigned long long)pci_resource_start(pdev, 2) + 9,
 220                        ((unsigned long long)pci_resource_start(pdev, 3) | ATA_PCI_CTL_OFS) + 4,
 221                        (unsigned long long)pci_resource_start(pdev, 4) + 24);
 222
 223                break;
 224
 225        case uli_5289:
 226                hpriv->scr_cfg_addr[0] = ULI5287_BASE;
 227                hpriv->scr_cfg_addr[1] = ULI5287_BASE + ULI5287_OFFS;
 228                break;
 229
 230        case uli_5281:
 231                hpriv->scr_cfg_addr[0] = ULI5281_BASE;
 232                hpriv->scr_cfg_addr[1] = ULI5281_BASE + ULI5281_OFFS;
 233                break;
 234
 235        default:
 236                BUG();
 237                break;
 238        }
 239
 240        pci_set_master(pdev);
 241        pci_intx(pdev, 1);
 242        return ata_host_activate(host, pdev->irq, ata_bmdma_interrupt,
 243                                 IRQF_SHARED, &uli_sht);
 244}
 245
 246module_pci_driver(uli_pci_driver);
 247
lxr.linux.no kindly hosted by Redpill Linpro AS, provider of Linux consulting and operations services since 1995.