diff options
Diffstat (limited to 'drivers/ata/sata_uli.c')
| -rw-r--r-- | drivers/ata/sata_uli.c | 300 |
1 files changed, 300 insertions, 0 deletions
diff --git a/drivers/ata/sata_uli.c b/drivers/ata/sata_uli.c new file mode 100644 index 00000000000..dd76f37be18 --- /dev/null +++ b/drivers/ata/sata_uli.c @@ -0,0 +1,300 @@ +/* + * sata_uli.c - ULi Electronics SATA + * + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2, or (at your option) + * any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; see the file COPYING. If not, write to + * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. + * + * + * libata documentation is available via 'make {ps|pdf}docs', + * as Documentation/DocBook/libata.* + * + * Hardware documentation available under NDA. + * + */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/pci.h> +#include <linux/init.h> +#include <linux/blkdev.h> +#include <linux/delay.h> +#include <linux/interrupt.h> +#include <linux/device.h> +#include <scsi/scsi_host.h> +#include <linux/libata.h> + +#define DRV_NAME "sata_uli" +#define DRV_VERSION "1.0" + +enum { + uli_5289 = 0, + uli_5287 = 1, + uli_5281 = 2, + + uli_max_ports = 4, + + /* PCI configuration registers */ + ULI5287_BASE = 0x90, /* sata0 phy SCR registers */ + ULI5287_OFFS = 0x10, /* offset from sata0->sata1 phy regs */ + ULI5281_BASE = 0x60, /* sata0 phy SCR registers */ + ULI5281_OFFS = 0x60, /* offset from sata0->sata1 phy regs */ +}; + +struct uli_priv { + unsigned int scr_cfg_addr[uli_max_ports]; +}; + +static int uli_init_one (struct pci_dev *pdev, const struct pci_device_id *ent); +static u32 uli_scr_read (struct ata_port *ap, unsigned int sc_reg); +static void uli_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val); + +static const struct pci_device_id uli_pci_tbl[] = { + { PCI_VENDOR_ID_AL, 0x5289, PCI_ANY_ID, PCI_ANY_ID, 0, 0, uli_5289 }, + { PCI_VENDOR_ID_AL, 0x5287, PCI_ANY_ID, PCI_ANY_ID, 0, 0, uli_5287 }, + { PCI_VENDOR_ID_AL, 0x5281, PCI_ANY_ID, PCI_ANY_ID, 0, 0, uli_5281 }, + { } /* terminate list */ +}; + + +static struct pci_driver uli_pci_driver = { + .name = DRV_NAME, + .id_table = uli_pci_tbl, + .probe = uli_init_one, + .remove = ata_pci_remove_one, +}; + +static struct scsi_host_template uli_sht = { + .module = THIS_MODULE, + .name = DRV_NAME, + .ioctl = ata_scsi_ioctl, + .queuecommand = ata_scsi_queuecmd, + .can_queue = ATA_DEF_QUEUE, + .this_id = ATA_SHT_THIS_ID, + .sg_tablesize = LIBATA_MAX_PRD, + .cmd_per_lun = ATA_SHT_CMD_PER_LUN, + .emulated = ATA_SHT_EMULATED, + .use_clustering = ATA_SHT_USE_CLUSTERING, + .proc_name = DRV_NAME, + .dma_boundary = ATA_DMA_BOUNDARY, + .slave_configure = ata_scsi_slave_config, + .slave_destroy = ata_scsi_slave_destroy, + .bios_param = ata_std_bios_param, +}; + +static const struct ata_port_operations uli_ops = { + .port_disable = ata_port_disable, + + .tf_load = ata_tf_load, + .tf_read = ata_tf_read, + .check_status = ata_check_status, + .exec_command = ata_exec_command, + .dev_select = ata_std_dev_select, + + .bmdma_setup = ata_bmdma_setup, + .bmdma_start = ata_bmdma_start, + .bmdma_stop = ata_bmdma_stop, + .bmdma_status = ata_bmdma_status, + .qc_prep = ata_qc_prep, + .qc_issue = ata_qc_issue_prot, + .data_xfer = ata_pio_data_xfer, + + .freeze = ata_bmdma_freeze, + .thaw = ata_bmdma_thaw, + .error_handler = ata_bmdma_error_handler, + .post_internal_cmd = ata_bmdma_post_internal_cmd, + + .irq_handler = ata_interrupt, + .irq_clear = ata_bmdma_irq_clear, + + .scr_read = uli_scr_read, + .scr_write = uli_scr_write, + + .port_start = ata_port_start, + .port_stop = ata_port_stop, + .host_stop = ata_host_stop, +}; + +static struct ata_port_info uli_port_info = { + .sht = &uli_sht, + .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY, + .pio_mask = 0x1f, /* pio0-4 */ + .udma_mask = 0x7f, /* udma0-6 */ + .port_ops = &uli_ops, +}; + + +MODULE_AUTHOR("Peer Chen"); +MODULE_DESCRIPTION("low-level driver for ULi Electronics SATA controller"); +MODULE_LICENSE("GPL"); +MODULE_DEVICE_TABLE(pci, uli_pci_tbl); +MODULE_VERSION(DRV_VERSION); + +static unsigned int get_scr_cfg_addr(struct ata_port *ap, unsigned int sc_reg) +{ + struct uli_priv *hpriv = ap->host->private_data; + return hpriv->scr_cfg_addr[ap->port_no] + (4 * sc_reg); +} + +static u32 uli_scr_cfg_read (struct ata_port *ap, unsigned int sc_reg) +{ + struct pci_dev *pdev = to_pci_dev(ap->host->dev); + unsigned int cfg_addr = get_scr_cfg_addr(ap, sc_reg); + u32 val; + + pci_read_config_dword(pdev, cfg_addr, &val); + return val; +} + +static void uli_scr_cfg_write (struct ata_port *ap, unsigned int scr, u32 val) +{ + struct pci_dev *pdev = to_pci_dev(ap->host->dev); + unsigned int cfg_addr = get_scr_cfg_addr(ap, scr); + + pci_write_config_dword(pdev, cfg_addr, val); +} + +static u32 uli_scr_read (struct ata_port *ap, unsigned int sc_reg) +{ + if (sc_reg > SCR_CONTROL) + return 0xffffffffU; + + return uli_scr_cfg_read(ap, sc_reg); +} + +static void uli_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val) +{ + if (sc_reg > SCR_CONTROL) //SCR_CONTROL=2, SCR_ERROR=1, SCR_STATUS=0 + return; + + uli_scr_cfg_write(ap, sc_reg, val); +} + +static int uli_init_one (struct pci_dev *pdev, const struct pci_device_id *ent) +{ + static int printed_version; + struct ata_probe_ent *probe_ent; + struct ata_port_info *ppi[2]; + int rc; + unsigned int board_idx = (unsigned int) ent->driver_data; + int pci_dev_busy = 0; + struct uli_priv *hpriv; + + if (!printed_version++) + dev_printk(KERN_INFO, &pdev->dev, "version " DRV_VERSION "\n"); + + rc = pci_enable_device(pdev); + if (rc) + return rc; + + rc = pci_request_regions(pdev, DRV_NAME); + if (rc) { + pci_dev_busy = 1; + goto err_out; + } + + rc = pci_set_dma_mask(pdev, ATA_DMA_MASK); + if (rc) + goto err_out_regions; + rc = pci_set_consistent_dma_mask(pdev, ATA_DMA_MASK); + if (rc) + goto err_out_regions; + + ppi[0] = ppi[1] = &uli_port_info; + probe_ent = ata_pci_init_native_mode(pdev, ppi, ATA_PORT_PRIMARY | ATA_PORT_SECONDARY); + if (!probe_ent) { + rc = -ENOMEM; + goto err_out_regions; + } + + hpriv = kzalloc(sizeof(*hpriv), GFP_KERNEL); + if (!hpriv) { + rc = -ENOMEM; + goto err_out_probe_ent; + } + + probe_ent->private_data = hpriv; + + switch (board_idx) { + case uli_5287: + hpriv->scr_cfg_addr[0] = ULI5287_BASE; + hpriv->scr_cfg_addr[1] = ULI5287_BASE + ULI5287_OFFS; + probe_ent->n_ports = 4; + + probe_ent->port[2].cmd_addr = pci_resource_start(pdev, 0) + 8; + probe_ent->port[2].altstatus_addr = + probe_ent->port[2].ctl_addr = + (pci_resource_start(pdev, 1) | ATA_PCI_CTL_OFS) + 4; + probe_ent->port[2].bmdma_addr = pci_resource_start(pdev, 4) + 16; + hpriv->scr_cfg_addr[2] = ULI5287_BASE + ULI5287_OFFS*4; + + probe_ent->port[3].cmd_addr = pci_resource_start(pdev, 2) + 8; + probe_ent->port[3].altstatus_addr = + probe_ent->port[3].ctl_addr = + (pci_resource_start(pdev, 3) | ATA_PCI_CTL_OFS) + 4; + probe_ent->port[3].bmdma_addr = pci_resource_start(pdev, 4) + 24; + hpriv->scr_cfg_addr[3] = ULI5287_BASE + ULI5287_OFFS*5; + + ata_std_ports(&probe_ent->port[2]); + ata_std_ports(&probe_ent->port[3]); + break; + + case uli_5289: + hpriv->scr_cfg_addr[0] = ULI5287_BASE; + hpriv->scr_cfg_addr[1] = ULI5287_BASE + ULI5287_OFFS; + break; + + case uli_5281: + hpriv->scr_cfg_addr[0] = ULI5281_BASE; + hpriv->scr_cfg_addr[1] = ULI5281_BASE + ULI5281_OFFS; + break; + + default: + BUG(); + break; + } + + pci_set_master(pdev); + pci_intx(pdev, 1); + + /* FIXME: check ata_device_add return value */ + ata_device_add(probe_ent); + kfree(probe_ent); + + return 0; + +err_out_probe_ent: + kfree(probe_ent); +err_out_regions: + pci_release_regions(pdev); +err_out: + if (!pci_dev_busy) + pci_disable_device(pdev); + return rc; + +} + +static int __init uli_init(void) +{ + return pci_register_driver(&uli_pci_driver); +} + +static void __exit uli_exit(void) +{ + pci_unregister_driver(&uli_pci_driver); +} + + +module_init(uli_init); +module_exit(uli_exit); |