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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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6004bda1cc
sata_qstor conversion to new error handling (EH). Convert sata_qstor to use the newer libata EH mechanisms. Based on earlier work by Jeff Garzik. Signed-off-by: Mark Lord <mlord@pobox.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
707 lines
19 KiB
C
707 lines
19 KiB
C
/*
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* sata_qstor.c - Pacific Digital Corporation QStor SATA
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*
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* Maintained by: Mark Lord <mlord@pobox.com>
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*
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* Copyright 2005 Pacific Digital Corporation.
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* (OSL/GPL code release authorized by Jalil Fadavi).
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*
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; see the file COPYING. If not, write to
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* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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*
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* libata documentation is available via 'make {ps|pdf}docs',
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* as Documentation/DocBook/libata.*
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*
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/pci.h>
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#include <linux/init.h>
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#include <linux/blkdev.h>
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#include <linux/delay.h>
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#include <linux/interrupt.h>
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#include <linux/device.h>
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#include <scsi/scsi_host.h>
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#include <linux/libata.h>
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#define DRV_NAME "sata_qstor"
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#define DRV_VERSION "0.09"
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enum {
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QS_MMIO_BAR = 4,
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QS_PORTS = 4,
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QS_MAX_PRD = LIBATA_MAX_PRD,
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QS_CPB_ORDER = 6,
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QS_CPB_BYTES = (1 << QS_CPB_ORDER),
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QS_PRD_BYTES = QS_MAX_PRD * 16,
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QS_PKT_BYTES = QS_CPB_BYTES + QS_PRD_BYTES,
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/* global register offsets */
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QS_HCF_CNFG3 = 0x0003, /* host configuration offset */
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QS_HID_HPHY = 0x0004, /* host physical interface info */
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QS_HCT_CTRL = 0x00e4, /* global interrupt mask offset */
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QS_HST_SFF = 0x0100, /* host status fifo offset */
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QS_HVS_SERD3 = 0x0393, /* PHY enable offset */
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/* global control bits */
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QS_HPHY_64BIT = (1 << 1), /* 64-bit bus detected */
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QS_CNFG3_GSRST = 0x01, /* global chip reset */
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QS_SERD3_PHY_ENA = 0xf0, /* PHY detection ENAble*/
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/* per-channel register offsets */
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QS_CCF_CPBA = 0x0710, /* chan CPB base address */
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QS_CCF_CSEP = 0x0718, /* chan CPB separation factor */
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QS_CFC_HUFT = 0x0800, /* host upstream fifo threshold */
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QS_CFC_HDFT = 0x0804, /* host downstream fifo threshold */
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QS_CFC_DUFT = 0x0808, /* dev upstream fifo threshold */
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QS_CFC_DDFT = 0x080c, /* dev downstream fifo threshold */
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QS_CCT_CTR0 = 0x0900, /* chan control-0 offset */
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QS_CCT_CTR1 = 0x0901, /* chan control-1 offset */
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QS_CCT_CFF = 0x0a00, /* chan command fifo offset */
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/* channel control bits */
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QS_CTR0_REG = (1 << 1), /* register mode (vs. pkt mode) */
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QS_CTR0_CLER = (1 << 2), /* clear channel errors */
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QS_CTR1_RDEV = (1 << 1), /* sata phy/comms reset */
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QS_CTR1_RCHN = (1 << 4), /* reset channel logic */
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QS_CCF_RUN_PKT = 0x107, /* RUN a new dma PKT */
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/* pkt sub-field headers */
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QS_HCB_HDR = 0x01, /* Host Control Block header */
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QS_DCB_HDR = 0x02, /* Device Control Block header */
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/* pkt HCB flag bits */
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QS_HF_DIRO = (1 << 0), /* data DIRection Out */
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QS_HF_DAT = (1 << 3), /* DATa pkt */
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QS_HF_IEN = (1 << 4), /* Interrupt ENable */
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QS_HF_VLD = (1 << 5), /* VaLiD pkt */
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/* pkt DCB flag bits */
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QS_DF_PORD = (1 << 2), /* Pio OR Dma */
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QS_DF_ELBA = (1 << 3), /* Extended LBA (lba48) */
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/* PCI device IDs */
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board_2068_idx = 0, /* QStor 4-port SATA/RAID */
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};
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enum {
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QS_DMA_BOUNDARY = ~0UL
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};
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typedef enum { qs_state_mmio, qs_state_pkt } qs_state_t;
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struct qs_port_priv {
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u8 *pkt;
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dma_addr_t pkt_dma;
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qs_state_t state;
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};
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static int qs_scr_read(struct ata_port *ap, unsigned int sc_reg, u32 *val);
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static int qs_scr_write(struct ata_port *ap, unsigned int sc_reg, u32 val);
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static int qs_ata_init_one(struct pci_dev *pdev, const struct pci_device_id *ent);
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static int qs_port_start(struct ata_port *ap);
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static void qs_host_stop(struct ata_host *host);
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static void qs_qc_prep(struct ata_queued_cmd *qc);
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static unsigned int qs_qc_issue(struct ata_queued_cmd *qc);
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static int qs_check_atapi_dma(struct ata_queued_cmd *qc);
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static void qs_bmdma_stop(struct ata_queued_cmd *qc);
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static u8 qs_bmdma_status(struct ata_port *ap);
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static void qs_irq_clear(struct ata_port *ap);
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static void qs_freeze(struct ata_port *ap);
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static void qs_thaw(struct ata_port *ap);
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static void qs_error_handler(struct ata_port *ap);
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static struct scsi_host_template qs_ata_sht = {
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.module = THIS_MODULE,
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.name = DRV_NAME,
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.ioctl = ata_scsi_ioctl,
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.queuecommand = ata_scsi_queuecmd,
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.can_queue = ATA_DEF_QUEUE,
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.this_id = ATA_SHT_THIS_ID,
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.sg_tablesize = QS_MAX_PRD,
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.cmd_per_lun = ATA_SHT_CMD_PER_LUN,
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.emulated = ATA_SHT_EMULATED,
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.use_clustering = ENABLE_CLUSTERING,
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.proc_name = DRV_NAME,
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.dma_boundary = QS_DMA_BOUNDARY,
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.slave_configure = ata_scsi_slave_config,
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.slave_destroy = ata_scsi_slave_destroy,
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.bios_param = ata_std_bios_param,
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};
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static const struct ata_port_operations qs_ata_ops = {
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.tf_load = ata_tf_load,
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.tf_read = ata_tf_read,
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.check_status = ata_check_status,
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.check_atapi_dma = qs_check_atapi_dma,
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.exec_command = ata_exec_command,
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.dev_select = ata_std_dev_select,
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.qc_prep = qs_qc_prep,
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.qc_issue = qs_qc_issue,
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.data_xfer = ata_data_xfer,
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.freeze = qs_freeze,
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.thaw = qs_thaw,
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.error_handler = qs_error_handler,
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.irq_clear = qs_irq_clear,
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.irq_on = ata_irq_on,
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.scr_read = qs_scr_read,
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.scr_write = qs_scr_write,
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.port_start = qs_port_start,
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.host_stop = qs_host_stop,
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.bmdma_stop = qs_bmdma_stop,
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.bmdma_status = qs_bmdma_status,
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};
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static const struct ata_port_info qs_port_info[] = {
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/* board_2068_idx */
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{
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.flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
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ATA_FLAG_MMIO | ATA_FLAG_PIO_POLLING,
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.pio_mask = 0x10, /* pio4 */
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.udma_mask = ATA_UDMA6,
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.port_ops = &qs_ata_ops,
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},
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};
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static const struct pci_device_id qs_ata_pci_tbl[] = {
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{ PCI_VDEVICE(PDC, 0x2068), board_2068_idx },
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{ } /* terminate list */
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};
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static struct pci_driver qs_ata_pci_driver = {
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.name = DRV_NAME,
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.id_table = qs_ata_pci_tbl,
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.probe = qs_ata_init_one,
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.remove = ata_pci_remove_one,
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};
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static void __iomem *qs_mmio_base(struct ata_host *host)
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{
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return host->iomap[QS_MMIO_BAR];
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}
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static int qs_check_atapi_dma(struct ata_queued_cmd *qc)
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{
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return 1; /* ATAPI DMA not supported */
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}
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static void qs_bmdma_stop(struct ata_queued_cmd *qc)
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{
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/* nothing */
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}
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static u8 qs_bmdma_status(struct ata_port *ap)
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{
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return 0;
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}
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static void qs_irq_clear(struct ata_port *ap)
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{
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/* nothing */
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}
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static inline void qs_enter_reg_mode(struct ata_port *ap)
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{
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u8 __iomem *chan = qs_mmio_base(ap->host) + (ap->port_no * 0x4000);
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struct qs_port_priv *pp = ap->private_data;
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pp->state = qs_state_mmio;
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writeb(QS_CTR0_REG, chan + QS_CCT_CTR0);
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readb(chan + QS_CCT_CTR0); /* flush */
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}
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static inline void qs_reset_channel_logic(struct ata_port *ap)
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{
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u8 __iomem *chan = qs_mmio_base(ap->host) + (ap->port_no * 0x4000);
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writeb(QS_CTR1_RCHN, chan + QS_CCT_CTR1);
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readb(chan + QS_CCT_CTR0); /* flush */
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qs_enter_reg_mode(ap);
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}
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static void qs_freeze(struct ata_port *ap)
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{
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u8 __iomem *mmio_base = qs_mmio_base(ap->host);
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writeb(0, mmio_base + QS_HCT_CTRL); /* disable host interrupts */
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qs_enter_reg_mode(ap);
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}
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static void qs_thaw(struct ata_port *ap)
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{
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u8 __iomem *mmio_base = qs_mmio_base(ap->host);
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qs_enter_reg_mode(ap);
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writeb(1, mmio_base + QS_HCT_CTRL); /* enable host interrupts */
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}
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static int qs_prereset(struct ata_link *link, unsigned long deadline)
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{
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struct ata_port *ap = link->ap;
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qs_reset_channel_logic(ap);
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return ata_std_prereset(link, deadline);
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}
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static int qs_scr_read(struct ata_port *ap, unsigned int sc_reg, u32 *val)
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{
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if (sc_reg > SCR_CONTROL)
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return -EINVAL;
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*val = readl(ap->ioaddr.scr_addr + (sc_reg * 8));
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return 0;
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}
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static void qs_error_handler(struct ata_port *ap)
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{
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qs_enter_reg_mode(ap);
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ata_do_eh(ap, qs_prereset, ata_std_softreset, NULL,
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ata_std_postreset);
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}
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static int qs_scr_write(struct ata_port *ap, unsigned int sc_reg, u32 val)
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{
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if (sc_reg > SCR_CONTROL)
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return -EINVAL;
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writel(val, ap->ioaddr.scr_addr + (sc_reg * 8));
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return 0;
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}
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static unsigned int qs_fill_sg(struct ata_queued_cmd *qc)
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{
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struct scatterlist *sg;
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struct ata_port *ap = qc->ap;
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struct qs_port_priv *pp = ap->private_data;
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unsigned int nelem;
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u8 *prd = pp->pkt + QS_CPB_BYTES;
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WARN_ON(qc->__sg == NULL);
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WARN_ON(qc->n_elem == 0 && qc->pad_len == 0);
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nelem = 0;
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ata_for_each_sg(sg, qc) {
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u64 addr;
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u32 len;
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addr = sg_dma_address(sg);
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*(__le64 *)prd = cpu_to_le64(addr);
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prd += sizeof(u64);
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len = sg_dma_len(sg);
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*(__le32 *)prd = cpu_to_le32(len);
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prd += sizeof(u64);
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VPRINTK("PRD[%u] = (0x%llX, 0x%X)\n", nelem,
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(unsigned long long)addr, len);
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nelem++;
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}
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return nelem;
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}
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static void qs_qc_prep(struct ata_queued_cmd *qc)
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{
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struct qs_port_priv *pp = qc->ap->private_data;
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u8 dflags = QS_DF_PORD, *buf = pp->pkt;
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u8 hflags = QS_HF_DAT | QS_HF_IEN | QS_HF_VLD;
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u64 addr;
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unsigned int nelem;
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VPRINTK("ENTER\n");
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qs_enter_reg_mode(qc->ap);
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if (qc->tf.protocol != ATA_PROT_DMA) {
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ata_qc_prep(qc);
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return;
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}
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nelem = qs_fill_sg(qc);
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if ((qc->tf.flags & ATA_TFLAG_WRITE))
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hflags |= QS_HF_DIRO;
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if ((qc->tf.flags & ATA_TFLAG_LBA48))
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dflags |= QS_DF_ELBA;
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/* host control block (HCB) */
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buf[ 0] = QS_HCB_HDR;
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buf[ 1] = hflags;
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*(__le32 *)(&buf[ 4]) = cpu_to_le32(qc->nbytes);
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*(__le32 *)(&buf[ 8]) = cpu_to_le32(nelem);
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addr = ((u64)pp->pkt_dma) + QS_CPB_BYTES;
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*(__le64 *)(&buf[16]) = cpu_to_le64(addr);
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/* device control block (DCB) */
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buf[24] = QS_DCB_HDR;
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buf[28] = dflags;
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/* frame information structure (FIS) */
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ata_tf_to_fis(&qc->tf, 0, 1, &buf[32]);
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}
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static inline void qs_packet_start(struct ata_queued_cmd *qc)
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{
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struct ata_port *ap = qc->ap;
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u8 __iomem *chan = qs_mmio_base(ap->host) + (ap->port_no * 0x4000);
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VPRINTK("ENTER, ap %p\n", ap);
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writeb(QS_CTR0_CLER, chan + QS_CCT_CTR0);
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wmb(); /* flush PRDs and pkt to memory */
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writel(QS_CCF_RUN_PKT, chan + QS_CCT_CFF);
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readl(chan + QS_CCT_CFF); /* flush */
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}
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static unsigned int qs_qc_issue(struct ata_queued_cmd *qc)
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{
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struct qs_port_priv *pp = qc->ap->private_data;
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switch (qc->tf.protocol) {
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case ATA_PROT_DMA:
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pp->state = qs_state_pkt;
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qs_packet_start(qc);
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return 0;
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case ATA_PROT_ATAPI_DMA:
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BUG();
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break;
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default:
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break;
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}
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pp->state = qs_state_mmio;
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return ata_qc_issue_prot(qc);
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}
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static void qs_do_or_die(struct ata_queued_cmd *qc, u8 status)
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{
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qc->err_mask |= ac_err_mask(status);
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if (!qc->err_mask) {
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ata_qc_complete(qc);
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} else {
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struct ata_port *ap = qc->ap;
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struct ata_eh_info *ehi = &ap->link.eh_info;
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ata_ehi_clear_desc(ehi);
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ata_ehi_push_desc(ehi, "status 0x%02X", status);
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if (qc->err_mask == AC_ERR_DEV)
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ata_port_abort(ap);
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else
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ata_port_freeze(ap);
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}
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}
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static inline unsigned int qs_intr_pkt(struct ata_host *host)
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{
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unsigned int handled = 0;
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u8 sFFE;
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u8 __iomem *mmio_base = qs_mmio_base(host);
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do {
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u32 sff0 = readl(mmio_base + QS_HST_SFF);
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u32 sff1 = readl(mmio_base + QS_HST_SFF + 4);
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u8 sEVLD = (sff1 >> 30) & 0x01; /* valid flag */
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sFFE = sff1 >> 31; /* empty flag */
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if (sEVLD) {
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u8 sDST = sff0 >> 16; /* dev status */
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u8 sHST = sff1 & 0x3f; /* host status */
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unsigned int port_no = (sff1 >> 8) & 0x03;
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struct ata_port *ap = host->ports[port_no];
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DPRINTK("SFF=%08x%08x: sCHAN=%u sHST=%d sDST=%02x\n",
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sff1, sff0, port_no, sHST, sDST);
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handled = 1;
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if (ap && !(ap->flags & ATA_FLAG_DISABLED)) {
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struct ata_queued_cmd *qc;
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struct qs_port_priv *pp = ap->private_data;
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if (!pp || pp->state != qs_state_pkt)
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continue;
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qc = ata_qc_from_tag(ap, ap->link.active_tag);
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if (qc && (!(qc->tf.flags & ATA_TFLAG_POLLING))) {
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switch (sHST) {
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case 0: /* successful CPB */
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case 3: /* device error */
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qs_enter_reg_mode(qc->ap);
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qs_do_or_die(qc, sDST);
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break;
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default:
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break;
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}
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}
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}
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}
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} while (!sFFE);
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return handled;
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}
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static inline unsigned int qs_intr_mmio(struct ata_host *host)
|
|
{
|
|
unsigned int handled = 0, port_no;
|
|
|
|
for (port_no = 0; port_no < host->n_ports; ++port_no) {
|
|
struct ata_port *ap;
|
|
ap = host->ports[port_no];
|
|
if (ap &&
|
|
!(ap->flags & ATA_FLAG_DISABLED)) {
|
|
struct ata_queued_cmd *qc;
|
|
struct qs_port_priv *pp;
|
|
qc = ata_qc_from_tag(ap, ap->link.active_tag);
|
|
if (!qc || !(qc->flags & ATA_QCFLAG_ACTIVE)) {
|
|
/*
|
|
* The qstor hardware generates spurious
|
|
* interrupts from time to time when switching
|
|
* in and out of packet mode.
|
|
* There's no obvious way to know if we're
|
|
* here now due to that, so just ack the irq
|
|
* and pretend we knew it was ours.. (ugh).
|
|
* This does not affect packet mode.
|
|
*/
|
|
ata_check_status(ap);
|
|
handled = 1;
|
|
continue;
|
|
}
|
|
pp = ap->private_data;
|
|
if (!pp || pp->state != qs_state_mmio)
|
|
continue;
|
|
if (!(qc->tf.flags & ATA_TFLAG_POLLING))
|
|
handled |= ata_host_intr(ap, qc);
|
|
}
|
|
}
|
|
return handled;
|
|
}
|
|
|
|
static irqreturn_t qs_intr(int irq, void *dev_instance)
|
|
{
|
|
struct ata_host *host = dev_instance;
|
|
unsigned int handled = 0;
|
|
unsigned long flags;
|
|
|
|
VPRINTK("ENTER\n");
|
|
|
|
spin_lock_irqsave(&host->lock, flags);
|
|
handled = qs_intr_pkt(host) | qs_intr_mmio(host);
|
|
spin_unlock_irqrestore(&host->lock, flags);
|
|
|
|
VPRINTK("EXIT\n");
|
|
|
|
return IRQ_RETVAL(handled);
|
|
}
|
|
|
|
static void qs_ata_setup_port(struct ata_ioports *port, void __iomem *base)
|
|
{
|
|
port->cmd_addr =
|
|
port->data_addr = base + 0x400;
|
|
port->error_addr =
|
|
port->feature_addr = base + 0x408; /* hob_feature = 0x409 */
|
|
port->nsect_addr = base + 0x410; /* hob_nsect = 0x411 */
|
|
port->lbal_addr = base + 0x418; /* hob_lbal = 0x419 */
|
|
port->lbam_addr = base + 0x420; /* hob_lbam = 0x421 */
|
|
port->lbah_addr = base + 0x428; /* hob_lbah = 0x429 */
|
|
port->device_addr = base + 0x430;
|
|
port->status_addr =
|
|
port->command_addr = base + 0x438;
|
|
port->altstatus_addr =
|
|
port->ctl_addr = base + 0x440;
|
|
port->scr_addr = base + 0xc00;
|
|
}
|
|
|
|
static int qs_port_start(struct ata_port *ap)
|
|
{
|
|
struct device *dev = ap->host->dev;
|
|
struct qs_port_priv *pp;
|
|
void __iomem *mmio_base = qs_mmio_base(ap->host);
|
|
void __iomem *chan = mmio_base + (ap->port_no * 0x4000);
|
|
u64 addr;
|
|
int rc;
|
|
|
|
rc = ata_port_start(ap);
|
|
if (rc)
|
|
return rc;
|
|
pp = devm_kzalloc(dev, sizeof(*pp), GFP_KERNEL);
|
|
if (!pp)
|
|
return -ENOMEM;
|
|
pp->pkt = dmam_alloc_coherent(dev, QS_PKT_BYTES, &pp->pkt_dma,
|
|
GFP_KERNEL);
|
|
if (!pp->pkt)
|
|
return -ENOMEM;
|
|
memset(pp->pkt, 0, QS_PKT_BYTES);
|
|
ap->private_data = pp;
|
|
|
|
qs_enter_reg_mode(ap);
|
|
addr = (u64)pp->pkt_dma;
|
|
writel((u32) addr, chan + QS_CCF_CPBA);
|
|
writel((u32)(addr >> 32), chan + QS_CCF_CPBA + 4);
|
|
return 0;
|
|
}
|
|
|
|
static void qs_host_stop(struct ata_host *host)
|
|
{
|
|
void __iomem *mmio_base = qs_mmio_base(host);
|
|
|
|
writeb(0, mmio_base + QS_HCT_CTRL); /* disable host interrupts */
|
|
writeb(QS_CNFG3_GSRST, mmio_base + QS_HCF_CNFG3); /* global reset */
|
|
}
|
|
|
|
static void qs_host_init(struct ata_host *host, unsigned int chip_id)
|
|
{
|
|
void __iomem *mmio_base = host->iomap[QS_MMIO_BAR];
|
|
unsigned int port_no;
|
|
|
|
writeb(0, mmio_base + QS_HCT_CTRL); /* disable host interrupts */
|
|
writeb(QS_CNFG3_GSRST, mmio_base + QS_HCF_CNFG3); /* global reset */
|
|
|
|
/* reset each channel in turn */
|
|
for (port_no = 0; port_no < host->n_ports; ++port_no) {
|
|
u8 __iomem *chan = mmio_base + (port_no * 0x4000);
|
|
writeb(QS_CTR1_RDEV|QS_CTR1_RCHN, chan + QS_CCT_CTR1);
|
|
writeb(QS_CTR0_REG, chan + QS_CCT_CTR0);
|
|
readb(chan + QS_CCT_CTR0); /* flush */
|
|
}
|
|
writeb(QS_SERD3_PHY_ENA, mmio_base + QS_HVS_SERD3); /* enable phy */
|
|
|
|
for (port_no = 0; port_no < host->n_ports; ++port_no) {
|
|
u8 __iomem *chan = mmio_base + (port_no * 0x4000);
|
|
/* set FIFO depths to same settings as Windows driver */
|
|
writew(32, chan + QS_CFC_HUFT);
|
|
writew(32, chan + QS_CFC_HDFT);
|
|
writew(10, chan + QS_CFC_DUFT);
|
|
writew( 8, chan + QS_CFC_DDFT);
|
|
/* set CPB size in bytes, as a power of two */
|
|
writeb(QS_CPB_ORDER, chan + QS_CCF_CSEP);
|
|
}
|
|
writeb(1, mmio_base + QS_HCT_CTRL); /* enable host interrupts */
|
|
}
|
|
|
|
/*
|
|
* The QStor understands 64-bit buses, and uses 64-bit fields
|
|
* for DMA pointers regardless of bus width. We just have to
|
|
* make sure our DMA masks are set appropriately for whatever
|
|
* bridge lies between us and the QStor, and then the DMA mapping
|
|
* code will ensure we only ever "see" appropriate buffer addresses.
|
|
* If we're 32-bit limited somewhere, then our 64-bit fields will
|
|
* just end up with zeros in the upper 32-bits, without any special
|
|
* logic required outside of this routine (below).
|
|
*/
|
|
static int qs_set_dma_masks(struct pci_dev *pdev, void __iomem *mmio_base)
|
|
{
|
|
u32 bus_info = readl(mmio_base + QS_HID_HPHY);
|
|
int rc, have_64bit_bus = (bus_info & QS_HPHY_64BIT);
|
|
|
|
if (have_64bit_bus &&
|
|
!pci_set_dma_mask(pdev, DMA_64BIT_MASK)) {
|
|
rc = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
|
|
if (rc) {
|
|
rc = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
|
|
if (rc) {
|
|
dev_printk(KERN_ERR, &pdev->dev,
|
|
"64-bit DMA enable failed\n");
|
|
return rc;
|
|
}
|
|
}
|
|
} else {
|
|
rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
|
|
if (rc) {
|
|
dev_printk(KERN_ERR, &pdev->dev,
|
|
"32-bit DMA enable failed\n");
|
|
return rc;
|
|
}
|
|
rc = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
|
|
if (rc) {
|
|
dev_printk(KERN_ERR, &pdev->dev,
|
|
"32-bit consistent DMA enable failed\n");
|
|
return rc;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int qs_ata_init_one(struct pci_dev *pdev,
|
|
const struct pci_device_id *ent)
|
|
{
|
|
static int printed_version;
|
|
unsigned int board_idx = (unsigned int) ent->driver_data;
|
|
const struct ata_port_info *ppi[] = { &qs_port_info[board_idx], NULL };
|
|
struct ata_host *host;
|
|
int rc, port_no;
|
|
|
|
if (!printed_version++)
|
|
dev_printk(KERN_DEBUG, &pdev->dev, "version " DRV_VERSION "\n");
|
|
|
|
/* alloc host */
|
|
host = ata_host_alloc_pinfo(&pdev->dev, ppi, QS_PORTS);
|
|
if (!host)
|
|
return -ENOMEM;
|
|
|
|
/* acquire resources and fill host */
|
|
rc = pcim_enable_device(pdev);
|
|
if (rc)
|
|
return rc;
|
|
|
|
if ((pci_resource_flags(pdev, QS_MMIO_BAR) & IORESOURCE_MEM) == 0)
|
|
return -ENODEV;
|
|
|
|
rc = pcim_iomap_regions(pdev, 1 << QS_MMIO_BAR, DRV_NAME);
|
|
if (rc)
|
|
return rc;
|
|
host->iomap = pcim_iomap_table(pdev);
|
|
|
|
rc = qs_set_dma_masks(pdev, host->iomap[QS_MMIO_BAR]);
|
|
if (rc)
|
|
return rc;
|
|
|
|
for (port_no = 0; port_no < host->n_ports; ++port_no) {
|
|
struct ata_port *ap = host->ports[port_no];
|
|
unsigned int offset = port_no * 0x4000;
|
|
void __iomem *chan = host->iomap[QS_MMIO_BAR] + offset;
|
|
|
|
qs_ata_setup_port(&ap->ioaddr, chan);
|
|
|
|
ata_port_pbar_desc(ap, QS_MMIO_BAR, -1, "mmio");
|
|
ata_port_pbar_desc(ap, QS_MMIO_BAR, offset, "port");
|
|
}
|
|
|
|
/* initialize adapter */
|
|
qs_host_init(host, board_idx);
|
|
|
|
pci_set_master(pdev);
|
|
return ata_host_activate(host, pdev->irq, qs_intr, IRQF_SHARED,
|
|
&qs_ata_sht);
|
|
}
|
|
|
|
static int __init qs_ata_init(void)
|
|
{
|
|
return pci_register_driver(&qs_ata_pci_driver);
|
|
}
|
|
|
|
static void __exit qs_ata_exit(void)
|
|
{
|
|
pci_unregister_driver(&qs_ata_pci_driver);
|
|
}
|
|
|
|
MODULE_AUTHOR("Mark Lord");
|
|
MODULE_DESCRIPTION("Pacific Digital Corporation QStor SATA low-level driver");
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_DEVICE_TABLE(pci, qs_ata_pci_tbl);
|
|
MODULE_VERSION(DRV_VERSION);
|
|
|
|
module_init(qs_ata_init);
|
|
module_exit(qs_ata_exit);
|