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- /*
- * sata_promise.c - Promise SATA
- *
- * Maintained by: Jeff Garzik <jgarzik@pobox.com>
- * Please ALWAYS copy linux-ide@vger.kernel.org
- * on emails.
- *
- * Copyright 2003-2004 Red Hat, Inc.
- *
- *
- * 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 information only 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.h>
- #include <scsi/scsi_host.h>
- #include <scsi/scsi_cmnd.h>
- #include <linux/libata.h>
- #include "sata_promise.h"
- #define DRV_NAME "sata_promise"
- #define DRV_VERSION "2.00"
- enum {
- PDC_MMIO_BAR = 3,
- /* register offsets */
- PDC_FEATURE = 0x04, /* Feature/Error reg (per port) */
- PDC_SECTOR_COUNT = 0x08, /* Sector count reg (per port) */
- PDC_SECTOR_NUMBER = 0x0C, /* Sector number reg (per port) */
- PDC_CYLINDER_LOW = 0x10, /* Cylinder low reg (per port) */
- PDC_CYLINDER_HIGH = 0x14, /* Cylinder high reg (per port) */
- PDC_DEVICE = 0x18, /* Device/Head reg (per port) */
- PDC_COMMAND = 0x1C, /* Command/status reg (per port) */
- PDC_ALTSTATUS = 0x38, /* Alternate-status/device-control reg (per port) */
- PDC_PKT_SUBMIT = 0x40, /* Command packet pointer addr */
- PDC_INT_SEQMASK = 0x40, /* Mask of asserted SEQ INTs */
- PDC_FLASH_CTL = 0x44, /* Flash control register */
- PDC_GLOBAL_CTL = 0x48, /* Global control/status (per port) */
- PDC_CTLSTAT = 0x60, /* IDE control and status (per port) */
- PDC_SATA_PLUG_CSR = 0x6C, /* SATA Plug control/status reg */
- PDC2_SATA_PLUG_CSR = 0x60, /* SATAII Plug control/status reg */
- PDC_TBG_MODE = 0x41C, /* TBG mode (not SATAII) */
- PDC_SLEW_CTL = 0x470, /* slew rate control reg (not SATAII) */
- PDC_ERR_MASK = (1<<19) | (1<<20) | (1<<21) | (1<<22) |
- (1<<8) | (1<<9) | (1<<10),
- board_2037x = 0, /* FastTrak S150 TX2plus */
- board_20319 = 1, /* FastTrak S150 TX4 */
- board_20619 = 2, /* FastTrak TX4000 */
- board_2057x = 3, /* SATAII150 Tx2plus */
- board_40518 = 4, /* SATAII150 Tx4 */
- PDC_HAS_PATA = (1 << 1), /* PDC20375/20575 has PATA */
- /* Sequence counter control registers bit definitions */
- PDC_SEQCNTRL_INT_MASK = (1 << 5), /* Sequence Interrupt Mask */
- /* Feature register values */
- PDC_FEATURE_ATAPI_PIO = 0x00, /* ATAPI data xfer by PIO */
- PDC_FEATURE_ATAPI_DMA = 0x01, /* ATAPI data xfer by DMA */
- /* Device/Head register values */
- PDC_DEVICE_SATA = 0xE0, /* Device/Head value for SATA devices */
- /* PDC_CTLSTAT bit definitions */
- PDC_DMA_ENABLE = (1 << 7),
- PDC_IRQ_DISABLE = (1 << 10),
- PDC_RESET = (1 << 11), /* HDMA reset */
- PDC_COMMON_FLAGS = ATA_FLAG_NO_LEGACY |
- ATA_FLAG_MMIO |
- ATA_FLAG_PIO_POLLING,
- /* hp->flags bits */
- PDC_FLAG_GEN_II = (1 << 0),
- };
- struct pdc_port_priv {
- u8 *pkt;
- dma_addr_t pkt_dma;
- };
- struct pdc_host_priv {
- unsigned long flags;
- unsigned long port_flags[ATA_MAX_PORTS];
- };
- static u32 pdc_sata_scr_read (struct ata_port *ap, unsigned int sc_reg);
- static void pdc_sata_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val);
- static int pdc_ata_init_one (struct pci_dev *pdev, const struct pci_device_id *ent);
- static irqreturn_t pdc_interrupt (int irq, void *dev_instance);
- static int pdc_port_start(struct ata_port *ap);
- static void pdc_qc_prep(struct ata_queued_cmd *qc);
- static void pdc_tf_load_mmio(struct ata_port *ap, const struct ata_taskfile *tf);
- static void pdc_exec_command_mmio(struct ata_port *ap, const struct ata_taskfile *tf);
- static int pdc_check_atapi_dma(struct ata_queued_cmd *qc);
- static int pdc_old_check_atapi_dma(struct ata_queued_cmd *qc);
- static void pdc_irq_clear(struct ata_port *ap);
- static unsigned int pdc_qc_issue_prot(struct ata_queued_cmd *qc);
- static void pdc_freeze(struct ata_port *ap);
- static void pdc_thaw(struct ata_port *ap);
- static void pdc_error_handler(struct ata_port *ap);
- static void pdc_post_internal_cmd(struct ata_queued_cmd *qc);
- static struct scsi_host_template pdc_ata_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 pdc_sata_ops = {
- .port_disable = ata_port_disable,
- .tf_load = pdc_tf_load_mmio,
- .tf_read = ata_tf_read,
- .check_status = ata_check_status,
- .exec_command = pdc_exec_command_mmio,
- .dev_select = ata_std_dev_select,
- .check_atapi_dma = pdc_check_atapi_dma,
- .qc_prep = pdc_qc_prep,
- .qc_issue = pdc_qc_issue_prot,
- .freeze = pdc_freeze,
- .thaw = pdc_thaw,
- .error_handler = pdc_error_handler,
- .post_internal_cmd = pdc_post_internal_cmd,
- .data_xfer = ata_data_xfer,
- .irq_handler = pdc_interrupt,
- .irq_clear = pdc_irq_clear,
- .irq_on = ata_irq_on,
- .irq_ack = ata_irq_ack,
- .scr_read = pdc_sata_scr_read,
- .scr_write = pdc_sata_scr_write,
- .port_start = pdc_port_start,
- };
- /* First-generation chips need a more restrictive ->check_atapi_dma op */
- static const struct ata_port_operations pdc_old_sata_ops = {
- .port_disable = ata_port_disable,
- .tf_load = pdc_tf_load_mmio,
- .tf_read = ata_tf_read,
- .check_status = ata_check_status,
- .exec_command = pdc_exec_command_mmio,
- .dev_select = ata_std_dev_select,
- .check_atapi_dma = pdc_old_check_atapi_dma,
- .qc_prep = pdc_qc_prep,
- .qc_issue = pdc_qc_issue_prot,
- .freeze = pdc_freeze,
- .thaw = pdc_thaw,
- .error_handler = pdc_error_handler,
- .post_internal_cmd = pdc_post_internal_cmd,
- .data_xfer = ata_data_xfer,
- .irq_handler = pdc_interrupt,
- .irq_clear = pdc_irq_clear,
- .irq_on = ata_irq_on,
- .irq_ack = ata_irq_ack,
- .scr_read = pdc_sata_scr_read,
- .scr_write = pdc_sata_scr_write,
- .port_start = pdc_port_start,
- };
- static const struct ata_port_operations pdc_pata_ops = {
- .port_disable = ata_port_disable,
- .tf_load = pdc_tf_load_mmio,
- .tf_read = ata_tf_read,
- .check_status = ata_check_status,
- .exec_command = pdc_exec_command_mmio,
- .dev_select = ata_std_dev_select,
- .check_atapi_dma = pdc_check_atapi_dma,
- .qc_prep = pdc_qc_prep,
- .qc_issue = pdc_qc_issue_prot,
- .freeze = pdc_freeze,
- .thaw = pdc_thaw,
- .error_handler = pdc_error_handler,
- .post_internal_cmd = pdc_post_internal_cmd,
- .data_xfer = ata_data_xfer,
- .irq_handler = pdc_interrupt,
- .irq_clear = pdc_irq_clear,
- .irq_on = ata_irq_on,
- .irq_ack = ata_irq_ack,
- .port_start = pdc_port_start,
- };
- static const struct ata_port_info pdc_port_info[] = {
- /* board_2037x */
- {
- .sht = &pdc_ata_sht,
- .flags = PDC_COMMON_FLAGS,
- .pio_mask = 0x1f, /* pio0-4 */
- .mwdma_mask = 0x07, /* mwdma0-2 */
- .udma_mask = 0x7f, /* udma0-6 ; FIXME */
- .port_ops = &pdc_old_sata_ops,
- },
- /* board_20319 */
- {
- .sht = &pdc_ata_sht,
- .flags = PDC_COMMON_FLAGS | ATA_FLAG_SATA,
- .pio_mask = 0x1f, /* pio0-4 */
- .mwdma_mask = 0x07, /* mwdma0-2 */
- .udma_mask = 0x7f, /* udma0-6 ; FIXME */
- .port_ops = &pdc_old_sata_ops,
- },
- /* board_20619 */
- {
- .sht = &pdc_ata_sht,
- .flags = PDC_COMMON_FLAGS | ATA_FLAG_SLAVE_POSS,
- .pio_mask = 0x1f, /* pio0-4 */
- .mwdma_mask = 0x07, /* mwdma0-2 */
- .udma_mask = 0x7f, /* udma0-6 ; FIXME */
- .port_ops = &pdc_pata_ops,
- },
- /* board_2057x */
- {
- .sht = &pdc_ata_sht,
- .flags = PDC_COMMON_FLAGS,
- .pio_mask = 0x1f, /* pio0-4 */
- .mwdma_mask = 0x07, /* mwdma0-2 */
- .udma_mask = 0x7f, /* udma0-6 ; FIXME */
- .port_ops = &pdc_sata_ops,
- },
- /* board_40518 */
- {
- .sht = &pdc_ata_sht,
- .flags = PDC_COMMON_FLAGS | ATA_FLAG_SATA,
- .pio_mask = 0x1f, /* pio0-4 */
- .mwdma_mask = 0x07, /* mwdma0-2 */
- .udma_mask = 0x7f, /* udma0-6 ; FIXME */
- .port_ops = &pdc_sata_ops,
- },
- };
- static const struct pci_device_id pdc_ata_pci_tbl[] = {
- { PCI_VDEVICE(PROMISE, 0x3371), board_2037x },
- { PCI_VDEVICE(PROMISE, 0x3373), board_2037x },
- { PCI_VDEVICE(PROMISE, 0x3375), board_2037x },
- { PCI_VDEVICE(PROMISE, 0x3376), board_2037x },
- { PCI_VDEVICE(PROMISE, 0x3570), board_2057x },
- { PCI_VDEVICE(PROMISE, 0x3571), board_2057x },
- { PCI_VDEVICE(PROMISE, 0x3574), board_2057x },
- { PCI_VDEVICE(PROMISE, 0x3577), board_2057x },
- { PCI_VDEVICE(PROMISE, 0x3d73), board_2057x },
- { PCI_VDEVICE(PROMISE, 0x3d75), board_2057x },
- { PCI_VDEVICE(PROMISE, 0x3318), board_20319 },
- { PCI_VDEVICE(PROMISE, 0x3319), board_20319 },
- { PCI_VDEVICE(PROMISE, 0x3515), board_20319 },
- { PCI_VDEVICE(PROMISE, 0x3519), board_20319 },
- { PCI_VDEVICE(PROMISE, 0x3d17), board_40518 },
- { PCI_VDEVICE(PROMISE, 0x3d18), board_40518 },
- { PCI_VDEVICE(PROMISE, 0x6629), board_20619 },
- { } /* terminate list */
- };
- static struct pci_driver pdc_ata_pci_driver = {
- .name = DRV_NAME,
- .id_table = pdc_ata_pci_tbl,
- .probe = pdc_ata_init_one,
- .remove = ata_pci_remove_one,
- };
- static int pdc_port_start(struct ata_port *ap)
- {
- struct device *dev = ap->host->dev;
- struct pdc_host_priv *hp = ap->host->private_data;
- struct pdc_port_priv *pp;
- int rc;
- /* fix up port flags and cable type for SATA+PATA chips */
- ap->flags |= hp->port_flags[ap->port_no];
- if (ap->flags & ATA_FLAG_SATA)
- ap->cbl = ATA_CBL_SATA;
- 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, 128, &pp->pkt_dma, GFP_KERNEL);
- if (!pp->pkt)
- return -ENOMEM;
- ap->private_data = pp;
- /* fix up PHYMODE4 align timing */
- if ((hp->flags & PDC_FLAG_GEN_II) && sata_scr_valid(ap)) {
- void __iomem *mmio = (void __iomem *) ap->ioaddr.scr_addr;
- unsigned int tmp;
- tmp = readl(mmio + 0x014);
- tmp = (tmp & ~3) | 1; /* set bits 1:0 = 0:1 */
- writel(tmp, mmio + 0x014);
- }
- return 0;
- }
- static void pdc_reset_port(struct ata_port *ap)
- {
- void __iomem *mmio = ap->ioaddr.cmd_addr + PDC_CTLSTAT;
- unsigned int i;
- u32 tmp;
- for (i = 11; i > 0; i--) {
- tmp = readl(mmio);
- if (tmp & PDC_RESET)
- break;
- udelay(100);
- tmp |= PDC_RESET;
- writel(tmp, mmio);
- }
- tmp &= ~PDC_RESET;
- writel(tmp, mmio);
- readl(mmio); /* flush */
- }
- static void pdc_pata_cbl_detect(struct ata_port *ap)
- {
- u8 tmp;
- void __iomem *mmio = (void __iomem *) ap->ioaddr.cmd_addr + PDC_CTLSTAT + 0x03;
- tmp = readb(mmio);
- if (tmp & 0x01) {
- ap->cbl = ATA_CBL_PATA40;
- ap->udma_mask &= ATA_UDMA_MASK_40C;
- } else
- ap->cbl = ATA_CBL_PATA80;
- }
- static u32 pdc_sata_scr_read (struct ata_port *ap, unsigned int sc_reg)
- {
- if (sc_reg > SCR_CONTROL || ap->cbl != ATA_CBL_SATA)
- return 0xffffffffU;
- return readl(ap->ioaddr.scr_addr + (sc_reg * 4));
- }
- static void pdc_sata_scr_write (struct ata_port *ap, unsigned int sc_reg,
- u32 val)
- {
- if (sc_reg > SCR_CONTROL || ap->cbl != ATA_CBL_SATA)
- return;
- writel(val, ap->ioaddr.scr_addr + (sc_reg * 4));
- }
- static void pdc_atapi_pkt(struct ata_queued_cmd *qc)
- {
- struct ata_port *ap = qc->ap;
- dma_addr_t sg_table = ap->prd_dma;
- unsigned int cdb_len = qc->dev->cdb_len;
- u8 *cdb = qc->cdb;
- struct pdc_port_priv *pp = ap->private_data;
- u8 *buf = pp->pkt;
- u32 *buf32 = (u32 *) buf;
- unsigned int dev_sel, feature, nbytes;
- /* set control bits (byte 0), zero delay seq id (byte 3),
- * and seq id (byte 2)
- */
- switch (qc->tf.protocol) {
- case ATA_PROT_ATAPI_DMA:
- if (!(qc->tf.flags & ATA_TFLAG_WRITE))
- buf32[0] = cpu_to_le32(PDC_PKT_READ);
- else
- buf32[0] = 0;
- break;
- case ATA_PROT_ATAPI_NODATA:
- buf32[0] = cpu_to_le32(PDC_PKT_NODATA);
- break;
- default:
- BUG();
- break;
- }
- buf32[1] = cpu_to_le32(sg_table); /* S/G table addr */
- buf32[2] = 0; /* no next-packet */
- /* select drive */
- if (sata_scr_valid(ap)) {
- dev_sel = PDC_DEVICE_SATA;
- } else {
- dev_sel = ATA_DEVICE_OBS;
- if (qc->dev->devno != 0)
- dev_sel |= ATA_DEV1;
- }
- buf[12] = (1 << 5) | ATA_REG_DEVICE;
- buf[13] = dev_sel;
- buf[14] = (1 << 5) | ATA_REG_DEVICE | PDC_PKT_CLEAR_BSY;
- buf[15] = dev_sel; /* once more, waiting for BSY to clear */
- buf[16] = (1 << 5) | ATA_REG_NSECT;
- buf[17] = 0x00;
- buf[18] = (1 << 5) | ATA_REG_LBAL;
- buf[19] = 0x00;
- /* set feature and byte counter registers */
- if (qc->tf.protocol != ATA_PROT_ATAPI_DMA) {
- feature = PDC_FEATURE_ATAPI_PIO;
- /* set byte counter register to real transfer byte count */
- nbytes = qc->nbytes;
- if (nbytes > 0xffff)
- nbytes = 0xffff;
- } else {
- feature = PDC_FEATURE_ATAPI_DMA;
- /* set byte counter register to 0 */
- nbytes = 0;
- }
- buf[20] = (1 << 5) | ATA_REG_FEATURE;
- buf[21] = feature;
- buf[22] = (1 << 5) | ATA_REG_BYTEL;
- buf[23] = nbytes & 0xFF;
- buf[24] = (1 << 5) | ATA_REG_BYTEH;
- buf[25] = (nbytes >> 8) & 0xFF;
- /* send ATAPI packet command 0xA0 */
- buf[26] = (1 << 5) | ATA_REG_CMD;
- buf[27] = ATA_CMD_PACKET;
- /* select drive and check DRQ */
- buf[28] = (1 << 5) | ATA_REG_DEVICE | PDC_PKT_WAIT_DRDY;
- buf[29] = dev_sel;
- /* we can represent cdb lengths 2/4/6/8/10/12/14/16 */
- BUG_ON(cdb_len & ~0x1E);
- /* append the CDB as the final part */
- buf[30] = (((cdb_len >> 1) & 7) << 5) | ATA_REG_DATA | PDC_LAST_REG;
- memcpy(buf+31, cdb, cdb_len);
- }
- static void pdc_qc_prep(struct ata_queued_cmd *qc)
- {
- struct pdc_port_priv *pp = qc->ap->private_data;
- unsigned int i;
- VPRINTK("ENTER\n");
- switch (qc->tf.protocol) {
- case ATA_PROT_DMA:
- ata_qc_prep(qc);
- /* fall through */
- case ATA_PROT_NODATA:
- i = pdc_pkt_header(&qc->tf, qc->ap->prd_dma,
- qc->dev->devno, pp->pkt);
- if (qc->tf.flags & ATA_TFLAG_LBA48)
- i = pdc_prep_lba48(&qc->tf, pp->pkt, i);
- else
- i = pdc_prep_lba28(&qc->tf, pp->pkt, i);
- pdc_pkt_footer(&qc->tf, pp->pkt, i);
- break;
- case ATA_PROT_ATAPI:
- ata_qc_prep(qc);
- break;
- case ATA_PROT_ATAPI_DMA:
- ata_qc_prep(qc);
- /*FALLTHROUGH*/
- case ATA_PROT_ATAPI_NODATA:
- pdc_atapi_pkt(qc);
- break;
- default:
- break;
- }
- }
- static void pdc_freeze(struct ata_port *ap)
- {
- void __iomem *mmio = (void __iomem *) ap->ioaddr.cmd_addr;
- u32 tmp;
- tmp = readl(mmio + PDC_CTLSTAT);
- tmp |= PDC_IRQ_DISABLE;
- tmp &= ~PDC_DMA_ENABLE;
- writel(tmp, mmio + PDC_CTLSTAT);
- readl(mmio + PDC_CTLSTAT); /* flush */
- }
- static void pdc_thaw(struct ata_port *ap)
- {
- void __iomem *mmio = (void __iomem *) ap->ioaddr.cmd_addr;
- u32 tmp;
- /* clear IRQ */
- readl(mmio + PDC_INT_SEQMASK);
- /* turn IRQ back on */
- tmp = readl(mmio + PDC_CTLSTAT);
- tmp &= ~PDC_IRQ_DISABLE;
- writel(tmp, mmio + PDC_CTLSTAT);
- readl(mmio + PDC_CTLSTAT); /* flush */
- }
- static int pdc_pre_reset(struct ata_port *ap)
- {
- if (!sata_scr_valid(ap))
- pdc_pata_cbl_detect(ap);
- return ata_std_prereset(ap);
- }
- static void pdc_error_handler(struct ata_port *ap)
- {
- ata_reset_fn_t hardreset;
- if (!(ap->pflags & ATA_PFLAG_FROZEN))
- pdc_reset_port(ap);
- hardreset = NULL;
- if (sata_scr_valid(ap))
- hardreset = sata_std_hardreset;
- /* perform recovery */
- ata_do_eh(ap, pdc_pre_reset, ata_std_softreset, hardreset,
- ata_std_postreset);
- }
- static void pdc_post_internal_cmd(struct ata_queued_cmd *qc)
- {
- struct ata_port *ap = qc->ap;
- if (qc->flags & ATA_QCFLAG_FAILED)
- qc->err_mask |= AC_ERR_OTHER;
- /* make DMA engine forget about the failed command */
- if (qc->err_mask)
- pdc_reset_port(ap);
- }
- static inline unsigned int pdc_host_intr( struct ata_port *ap,
- struct ata_queued_cmd *qc)
- {
- unsigned int handled = 0;
- u32 tmp;
- void __iomem *mmio = ap->ioaddr.cmd_addr + PDC_GLOBAL_CTL;
- tmp = readl(mmio);
- if (tmp & PDC_ERR_MASK) {
- qc->err_mask |= AC_ERR_DEV;
- pdc_reset_port(ap);
- }
- switch (qc->tf.protocol) {
- case ATA_PROT_DMA:
- case ATA_PROT_NODATA:
- case ATA_PROT_ATAPI_DMA:
- case ATA_PROT_ATAPI_NODATA:
- qc->err_mask |= ac_err_mask(ata_wait_idle(ap));
- ata_qc_complete(qc);
- handled = 1;
- break;
- default:
- ap->stats.idle_irq++;
- break;
- }
- return handled;
- }
- static void pdc_irq_clear(struct ata_port *ap)
- {
- struct ata_host *host = ap->host;
- void __iomem *mmio = host->iomap[PDC_MMIO_BAR];
- readl(mmio + PDC_INT_SEQMASK);
- }
- static irqreturn_t pdc_interrupt (int irq, void *dev_instance)
- {
- struct ata_host *host = dev_instance;
- struct ata_port *ap;
- u32 mask = 0;
- unsigned int i, tmp;
- unsigned int handled = 0;
- void __iomem *mmio_base;
- VPRINTK("ENTER\n");
- if (!host || !host->iomap[PDC_MMIO_BAR]) {
- VPRINTK("QUICK EXIT\n");
- return IRQ_NONE;
- }
- mmio_base = host->iomap[PDC_MMIO_BAR];
- /* reading should also clear interrupts */
- mask = readl(mmio_base + PDC_INT_SEQMASK);
- if (mask == 0xffffffff) {
- VPRINTK("QUICK EXIT 2\n");
- return IRQ_NONE;
- }
- spin_lock(&host->lock);
- mask &= 0xffff; /* only 16 tags possible */
- if (!mask) {
- VPRINTK("QUICK EXIT 3\n");
- goto done_irq;
- }
- writel(mask, mmio_base + PDC_INT_SEQMASK);
- for (i = 0; i < host->n_ports; i++) {
- VPRINTK("port %u\n", i);
- ap = host->ports[i];
- tmp = mask & (1 << (i + 1));
- if (tmp && ap &&
- !(ap->flags & ATA_FLAG_DISABLED)) {
- struct ata_queued_cmd *qc;
- qc = ata_qc_from_tag(ap, ap->active_tag);
- if (qc && (!(qc->tf.flags & ATA_TFLAG_POLLING)))
- handled += pdc_host_intr(ap, qc);
- }
- }
- VPRINTK("EXIT\n");
- done_irq:
- spin_unlock(&host->lock);
- return IRQ_RETVAL(handled);
- }
- static inline void pdc_packet_start(struct ata_queued_cmd *qc)
- {
- struct ata_port *ap = qc->ap;
- struct pdc_port_priv *pp = ap->private_data;
- void __iomem *mmio = ap->host->iomap[PDC_MMIO_BAR];
- unsigned int port_no = ap->port_no;
- u8 seq = (u8) (port_no + 1);
- VPRINTK("ENTER, ap %p\n", ap);
- writel(0x00000001, mmio + (seq * 4));
- readl(mmio + (seq * 4)); /* flush */
- pp->pkt[2] = seq;
- wmb(); /* flush PRD, pkt writes */
- writel(pp->pkt_dma, ap->ioaddr.cmd_addr + PDC_PKT_SUBMIT);
- readl(ap->ioaddr.cmd_addr + PDC_PKT_SUBMIT); /* flush */
- }
- static unsigned int pdc_qc_issue_prot(struct ata_queued_cmd *qc)
- {
- switch (qc->tf.protocol) {
- case ATA_PROT_ATAPI_NODATA:
- if (qc->dev->flags & ATA_DFLAG_CDB_INTR)
- break;
- /*FALLTHROUGH*/
- case ATA_PROT_ATAPI_DMA:
- case ATA_PROT_DMA:
- case ATA_PROT_NODATA:
- pdc_packet_start(qc);
- return 0;
- default:
- break;
- }
- return ata_qc_issue_prot(qc);
- }
- static void pdc_tf_load_mmio(struct ata_port *ap, const struct ata_taskfile *tf)
- {
- WARN_ON (tf->protocol == ATA_PROT_DMA ||
- tf->protocol == ATA_PROT_NODATA);
- ata_tf_load(ap, tf);
- }
- static void pdc_exec_command_mmio(struct ata_port *ap, const struct ata_taskfile *tf)
- {
- WARN_ON (tf->protocol == ATA_PROT_DMA ||
- tf->protocol == ATA_PROT_NODATA);
- ata_exec_command(ap, tf);
- }
- static int pdc_check_atapi_dma(struct ata_queued_cmd *qc)
- {
- u8 *scsicmd = qc->scsicmd->cmnd;
- int pio = 1; /* atapi dma off by default */
- /* Whitelist commands that may use DMA. */
- switch (scsicmd[0]) {
- case WRITE_12:
- case WRITE_10:
- case WRITE_6:
- case READ_12:
- case READ_10:
- case READ_6:
- case 0xad: /* READ_DVD_STRUCTURE */
- case 0xbe: /* READ_CD */
- pio = 0;
- }
- /* -45150 (FFFF4FA2) to -1 (FFFFFFFF) shall use PIO mode */
- if (scsicmd[0] == WRITE_10) {
- unsigned int lba;
- lba = (scsicmd[2] << 24) | (scsicmd[3] << 16) | (scsicmd[4] << 8) | scsicmd[5];
- if (lba >= 0xFFFF4FA2)
- pio = 1;
- }
- return pio;
- }
- static int pdc_old_check_atapi_dma(struct ata_queued_cmd *qc)
- {
- struct ata_port *ap = qc->ap;
- /* First generation chips cannot use ATAPI DMA on SATA ports */
- if (sata_scr_valid(ap))
- return 1;
- return pdc_check_atapi_dma(qc);
- }
- static void pdc_ata_setup_port(struct ata_ioports *port, void __iomem *base,
- void __iomem *scr_addr)
- {
- port->cmd_addr = base;
- port->data_addr = base;
- port->feature_addr =
- port->error_addr = base + 0x4;
- port->nsect_addr = base + 0x8;
- port->lbal_addr = base + 0xc;
- port->lbam_addr = base + 0x10;
- port->lbah_addr = base + 0x14;
- port->device_addr = base + 0x18;
- port->command_addr =
- port->status_addr = base + 0x1c;
- port->altstatus_addr =
- port->ctl_addr = base + 0x38;
- port->scr_addr = scr_addr;
- }
- static void pdc_host_init(unsigned int chip_id, struct ata_probe_ent *pe)
- {
- void __iomem *mmio = pe->iomap[PDC_MMIO_BAR];
- struct pdc_host_priv *hp = pe->private_data;
- int hotplug_offset;
- u32 tmp;
- if (hp->flags & PDC_FLAG_GEN_II)
- hotplug_offset = PDC2_SATA_PLUG_CSR;
- else
- hotplug_offset = PDC_SATA_PLUG_CSR;
- /*
- * Except for the hotplug stuff, this is voodoo from the
- * Promise driver. Label this entire section
- * "TODO: figure out why we do this"
- */
- /* enable BMR_BURST, maybe change FIFO_SHD to 8 dwords */
- tmp = readl(mmio + PDC_FLASH_CTL);
- tmp |= 0x02000; /* bit 13 (enable bmr burst) */
- if (!(hp->flags & PDC_FLAG_GEN_II))
- tmp |= 0x10000; /* bit 16 (fifo threshold at 8 dw) */
- writel(tmp, mmio + PDC_FLASH_CTL);
- /* clear plug/unplug flags for all ports */
- tmp = readl(mmio + hotplug_offset);
- writel(tmp | 0xff, mmio + hotplug_offset);
- /* mask plug/unplug ints */
- tmp = readl(mmio + hotplug_offset);
- writel(tmp | 0xff0000, mmio + hotplug_offset);
- /* don't initialise TBG or SLEW on 2nd generation chips */
- if (hp->flags & PDC_FLAG_GEN_II)
- return;
- /* reduce TBG clock to 133 Mhz. */
- tmp = readl(mmio + PDC_TBG_MODE);
- tmp &= ~0x30000; /* clear bit 17, 16*/
- tmp |= 0x10000; /* set bit 17:16 = 0:1 */
- writel(tmp, mmio + PDC_TBG_MODE);
- readl(mmio + PDC_TBG_MODE); /* flush */
- msleep(10);
- /* adjust slew rate control register. */
- tmp = readl(mmio + PDC_SLEW_CTL);
- tmp &= 0xFFFFF03F; /* clear bit 11 ~ 6 */
- tmp |= 0x00000900; /* set bit 11-9 = 100b , bit 8-6 = 100 */
- writel(tmp, mmio + PDC_SLEW_CTL);
- }
- static int pdc_ata_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
- {
- static int printed_version;
- struct ata_probe_ent *probe_ent;
- struct pdc_host_priv *hp;
- void __iomem *base;
- unsigned int board_idx = (unsigned int) ent->driver_data;
- int rc;
- u8 tmp;
- if (!printed_version++)
- dev_printk(KERN_DEBUG, &pdev->dev, "version " DRV_VERSION "\n");
- rc = pcim_enable_device(pdev);
- if (rc)
- return rc;
- rc = pcim_iomap_regions(pdev, 1 << PDC_MMIO_BAR, DRV_NAME);
- if (rc == -EBUSY)
- pcim_pin_device(pdev);
- if (rc)
- return rc;
- rc = pci_set_dma_mask(pdev, ATA_DMA_MASK);
- if (rc)
- return rc;
- rc = pci_set_consistent_dma_mask(pdev, ATA_DMA_MASK);
- if (rc)
- return rc;
- probe_ent = devm_kzalloc(&pdev->dev, sizeof(*probe_ent), GFP_KERNEL);
- if (probe_ent == NULL)
- return -ENOMEM;
- probe_ent->dev = pci_dev_to_dev(pdev);
- INIT_LIST_HEAD(&probe_ent->node);
- hp = devm_kzalloc(&pdev->dev, sizeof(*hp), GFP_KERNEL);
- if (hp == NULL)
- return -ENOMEM;
- probe_ent->private_data = hp;
- probe_ent->sht = pdc_port_info[board_idx].sht;
- probe_ent->port_flags = pdc_port_info[board_idx].flags;
- probe_ent->pio_mask = pdc_port_info[board_idx].pio_mask;
- probe_ent->mwdma_mask = pdc_port_info[board_idx].mwdma_mask;
- probe_ent->udma_mask = pdc_port_info[board_idx].udma_mask;
- probe_ent->port_ops = pdc_port_info[board_idx].port_ops;
- probe_ent->irq = pdev->irq;
- probe_ent->irq_flags = IRQF_SHARED;
- probe_ent->iomap = pcim_iomap_table(pdev);
- base = probe_ent->iomap[PDC_MMIO_BAR];
- pdc_ata_setup_port(&probe_ent->port[0], base + 0x200, base + 0x400);
- pdc_ata_setup_port(&probe_ent->port[1], base + 0x280, base + 0x500);
- /* notice 4-port boards */
- switch (board_idx) {
- case board_40518:
- hp->flags |= PDC_FLAG_GEN_II;
- /* Fall through */
- case board_20319:
- probe_ent->n_ports = 4;
- pdc_ata_setup_port(&probe_ent->port[2], base + 0x300, base + 0x600);
- pdc_ata_setup_port(&probe_ent->port[3], base + 0x380, base + 0x700);
- break;
- case board_2057x:
- hp->flags |= PDC_FLAG_GEN_II;
- /* Fall through */
- case board_2037x:
- /* TX2plus boards also have a PATA port */
- tmp = readb(base + PDC_FLASH_CTL+1);
- if (!(tmp & 0x80)) {
- probe_ent->n_ports = 3;
- pdc_ata_setup_port(&probe_ent->port[2], base + 0x300, NULL);
- hp->port_flags[2] = ATA_FLAG_SLAVE_POSS;
- printk(KERN_INFO DRV_NAME " PATA port found\n");
- } else
- probe_ent->n_ports = 2;
- hp->port_flags[0] = ATA_FLAG_SATA;
- hp->port_flags[1] = ATA_FLAG_SATA;
- break;
- case board_20619:
- probe_ent->n_ports = 4;
- pdc_ata_setup_port(&probe_ent->port[2], base + 0x300, NULL);
- pdc_ata_setup_port(&probe_ent->port[3], base + 0x380, NULL);
- break;
- default:
- BUG();
- break;
- }
- pci_set_master(pdev);
- /* initialize adapter */
- pdc_host_init(board_idx, probe_ent);
- if (!ata_device_add(probe_ent))
- return -ENODEV;
- devm_kfree(&pdev->dev, probe_ent);
- return 0;
- }
- static int __init pdc_ata_init(void)
- {
- return pci_register_driver(&pdc_ata_pci_driver);
- }
- static void __exit pdc_ata_exit(void)
- {
- pci_unregister_driver(&pdc_ata_pci_driver);
- }
- MODULE_AUTHOR("Jeff Garzik");
- MODULE_DESCRIPTION("Promise ATA TX2/TX4/TX4000 low-level driver");
- MODULE_LICENSE("GPL");
- MODULE_DEVICE_TABLE(pci, pdc_ata_pci_tbl);
- MODULE_VERSION(DRV_VERSION);
- module_init(pdc_ata_init);
- module_exit(pdc_ata_exit);
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