diff options
Diffstat (limited to 'drivers/ata/pata_cs5520.c')
| -rw-r--r-- | drivers/ata/pata_cs5520.c | 330 |
1 files changed, 152 insertions, 178 deletions
diff --git a/drivers/ata/pata_cs5520.c b/drivers/ata/pata_cs5520.c index 792ce482851..d65cb9d2fa8 100644 --- a/drivers/ata/pata_cs5520.c +++ b/drivers/ata/pata_cs5520.c @@ -29,19 +29,18 @@ * General Public License for more details. * * Documentation: - * Not publically available. + * Not publicly available. */ #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 <scsi/scsi_host.h> #include <linux/libata.h> #define DRV_NAME "pata_cs5520" -#define DRV_VERSION "0.6.2" +#define DRV_VERSION "0.6.6" struct pio_clocks { @@ -90,48 +89,12 @@ static void cs5520_set_timings(struct ata_port *ap, struct ata_device *adev, int } /** - * cs5520_enable_dma - turn on DMA bits - * - * Turn on the DMA bits for this disk. Needed because the BIOS probably - * has not done the work for us. Belongs in the core SATA code. - */ - -static void cs5520_enable_dma(struct ata_port *ap, struct ata_device *adev) -{ - /* Set the DMA enable/disable flag */ - u8 reg = inb(ap->ioaddr.bmdma_addr + 0x02); - reg |= 1<<(adev->devno + 5); - outb(reg, ap->ioaddr.bmdma_addr + 0x02); -} - -/** - * cs5520_set_dmamode - program DMA timings - * @ap: ATA port - * @adev: ATA device - * - * Program the DMA mode timings for the controller according to the pio - * clocking table. Note that this device sets the DMA timings to PIO - * mode values. This may seem bizarre but the 5520 architecture talks - * PIO mode to the disk and DMA mode to the controller so the underlying - * transfers are PIO timed. - */ - -static void cs5520_set_dmamode(struct ata_port *ap, struct ata_device *adev) -{ - static const int dma_xlate[3] = { XFER_PIO_0, XFER_PIO_3, XFER_PIO_4 }; - cs5520_set_timings(ap, adev, dma_xlate[adev->dma_mode]); - cs5520_enable_dma(ap, adev); -} - -/** * cs5520_set_piomode - program PIO timings * @ap: ATA port * @adev: ATA device * * Program the PIO mode timings for the controller according to the pio - * clocking table. We know pio_mode will equal dma_mode because of the - * CS5520 architecture. At least once we turned DMA on and wrote a - * mode setter. + * clocking table. */ static void cs5520_set_piomode(struct ata_port *ap, struct ata_device *adev) @@ -139,198 +102,209 @@ static void cs5520_set_piomode(struct ata_port *ap, struct ata_device *adev) cs5520_set_timings(ap, adev, adev->pio_mode); } - -static int cs5520_pre_reset(struct ata_port *ap) -{ - ap->cbl = ATA_CBL_PATA40; - return ata_std_prereset(ap); -} - -static void cs5520_error_handler(struct ata_port *ap) -{ - return ata_bmdma_drive_eh(ap, cs5520_pre_reset, ata_std_softreset, NULL, ata_std_postreset); -} - static struct scsi_host_template cs5520_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, - .max_sectors = ATA_MAX_SECTORS, - .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, - .bios_param = ata_std_bios_param, + ATA_BMDMA_SHT(DRV_NAME), + .sg_tablesize = LIBATA_DUMB_MAX_PRD, }; static struct ata_port_operations cs5520_port_ops = { - .port_disable = ata_port_disable, + .inherits = &ata_bmdma_port_ops, + .qc_prep = ata_bmdma_dumb_qc_prep, + .cable_detect = ata_cable_40wire, .set_piomode = cs5520_set_piomode, - .set_dmamode = cs5520_set_dmamode, - - .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, - - .freeze = ata_bmdma_freeze, - .thaw = ata_bmdma_thaw, - .error_handler = cs5520_error_handler, - .post_internal_cmd = ata_bmdma_post_internal_cmd, - - .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, - - .eng_timeout = ata_eng_timeout, - - .irq_handler = ata_interrupt, - .irq_clear = ata_bmdma_irq_clear, - - .port_start = ata_port_start, - .port_stop = ata_port_stop, - .host_stop = ata_host_stop, }; -static int __devinit cs5520_init_one(struct pci_dev *dev, const struct pci_device_id *id) +static int cs5520_init_one(struct pci_dev *pdev, const struct pci_device_id *id) { + static const unsigned int cmd_port[] = { 0x1F0, 0x170 }; + static const unsigned int ctl_port[] = { 0x3F6, 0x376 }; + struct ata_port_info pi = { + .flags = ATA_FLAG_SLAVE_POSS, + .pio_mask = ATA_PIO4, + .port_ops = &cs5520_port_ops, + }; + const struct ata_port_info *ppi[2]; u8 pcicfg; - static struct ata_probe_ent probe[2]; - int ports = 0; + void __iomem *iomap[5]; + struct ata_host *host; + struct ata_ioports *ioaddr; + int i, rc; + + rc = pcim_enable_device(pdev); + if (rc) + return rc; /* IDE port enable bits */ - pci_read_config_byte(dev, 0x60, &pcicfg); + pci_read_config_byte(pdev, 0x60, &pcicfg); /* Check if the ATA ports are enabled */ if ((pcicfg & 3) == 0) return -ENODEV; + ppi[0] = ppi[1] = &ata_dummy_port_info; + if (pcicfg & 1) + ppi[0] = π + if (pcicfg & 2) + ppi[1] = π + if ((pcicfg & 0x40) == 0) { - printk(KERN_WARNING DRV_NAME ": DMA mode disabled. Enabling.\n"); - pci_write_config_byte(dev, 0x60, pcicfg | 0x40); + dev_warn(&pdev->dev, "DMA mode disabled. Enabling.\n"); + pci_write_config_byte(pdev, 0x60, pcicfg | 0x40); } + pi.mwdma_mask = id->driver_data; + + host = ata_host_alloc_pinfo(&pdev->dev, ppi, 2); + if (!host) + return -ENOMEM; + /* Perform set up for DMA */ - if (pci_enable_device_bars(dev, 1<<2)) { + if (pci_enable_device_io(pdev)) { printk(KERN_ERR DRV_NAME ": unable to configure BAR2.\n"); return -ENODEV; } - pci_set_master(dev); - if (pci_set_dma_mask(dev, DMA_32BIT_MASK)) { + + if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) { printk(KERN_ERR DRV_NAME ": unable to configure DMA mask.\n"); return -ENODEV; } - if (pci_set_consistent_dma_mask(dev, DMA_32BIT_MASK)) { + if (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32))) { printk(KERN_ERR DRV_NAME ": unable to configure consistent DMA mask.\n"); return -ENODEV; } - /* We have to do our own plumbing as the PCI setup for this - chipset is non-standard so we can't punt to the libata code */ - - INIT_LIST_HEAD(&probe[0].node); - probe[0].dev = pci_dev_to_dev(dev); - probe[0].port_ops = &cs5520_port_ops; - probe[0].sht = &cs5520_sht; - probe[0].pio_mask = 0x1F; - probe[0].mwdma_mask = id->driver_data; - probe[0].irq = 14; - probe[0].irq_flags = 0; - probe[0].port_flags = ATA_FLAG_SLAVE_POSS|ATA_FLAG_SRST; - probe[0].n_ports = 1; - probe[0].port[0].cmd_addr = 0x1F0; - probe[0].port[0].ctl_addr = 0x3F6; - probe[0].port[0].altstatus_addr = 0x3F6; - probe[0].port[0].bmdma_addr = pci_resource_start(dev, 2); - - /* The secondary lurks at different addresses but is otherwise - the same beastie */ - - probe[1] = probe[0]; - INIT_LIST_HEAD(&probe[1].node); - probe[1].irq = 15; - probe[1].port[0].cmd_addr = 0x170; - probe[1].port[0].ctl_addr = 0x376; - probe[1].port[0].altstatus_addr = 0x376; - probe[1].port[0].bmdma_addr = pci_resource_start(dev, 2) + 8; - - /* Let libata fill in the port details */ - ata_std_ports(&probe[0].port[0]); - ata_std_ports(&probe[1].port[0]); - - /* Now add the ports that are active */ - if (pcicfg & 1) - ports += ata_device_add(&probe[0]); - if (pcicfg & 2) - ports += ata_device_add(&probe[1]); - if (ports) - return 0; - return -ENODEV; + /* Map IO ports and initialize host accordingly */ + iomap[0] = devm_ioport_map(&pdev->dev, cmd_port[0], 8); + iomap[1] = devm_ioport_map(&pdev->dev, ctl_port[0], 1); + iomap[2] = devm_ioport_map(&pdev->dev, cmd_port[1], 8); + iomap[3] = devm_ioport_map(&pdev->dev, ctl_port[1], 1); + iomap[4] = pcim_iomap(pdev, 2, 0); + + if (!iomap[0] || !iomap[1] || !iomap[2] || !iomap[3] || !iomap[4]) + return -ENOMEM; + + ioaddr = &host->ports[0]->ioaddr; + ioaddr->cmd_addr = iomap[0]; + ioaddr->ctl_addr = iomap[1]; + ioaddr->altstatus_addr = iomap[1]; + ioaddr->bmdma_addr = iomap[4]; + ata_sff_std_ports(ioaddr); + + ata_port_desc(host->ports[0], + "cmd 0x%x ctl 0x%x", cmd_port[0], ctl_port[0]); + ata_port_pbar_desc(host->ports[0], 4, 0, "bmdma"); + + ioaddr = &host->ports[1]->ioaddr; + ioaddr->cmd_addr = iomap[2]; + ioaddr->ctl_addr = iomap[3]; + ioaddr->altstatus_addr = iomap[3]; + ioaddr->bmdma_addr = iomap[4] + 8; + ata_sff_std_ports(ioaddr); + + ata_port_desc(host->ports[1], + "cmd 0x%x ctl 0x%x", cmd_port[1], ctl_port[1]); + ata_port_pbar_desc(host->ports[1], 4, 8, "bmdma"); + + /* activate the host */ + pci_set_master(pdev); + rc = ata_host_start(host); + if (rc) + return rc; + + for (i = 0; i < 2; i++) { + static const int irq[] = { 14, 15 }; + struct ata_port *ap = host->ports[i]; + + if (ata_port_is_dummy(ap)) + continue; + + rc = devm_request_irq(&pdev->dev, irq[ap->port_no], + ata_bmdma_interrupt, 0, DRV_NAME, host); + if (rc) + return rc; + + ata_port_desc(ap, "irq %d", irq[i]); + } + + return ata_host_register(host, &cs5520_sht); +} + +#ifdef CONFIG_PM_SLEEP +/** + * cs5520_reinit_one - device resume + * @pdev: PCI device + * + * Do any reconfiguration work needed by a resume from RAM. We need + * to restore DMA mode support on BIOSen which disabled it + */ + +static int cs5520_reinit_one(struct pci_dev *pdev) +{ + struct ata_host *host = pci_get_drvdata(pdev); + u8 pcicfg; + int rc; + + rc = ata_pci_device_do_resume(pdev); + if (rc) + return rc; + + pci_read_config_byte(pdev, 0x60, &pcicfg); + if ((pcicfg & 0x40) == 0) + pci_write_config_byte(pdev, 0x60, pcicfg | 0x40); + + ata_host_resume(host); + return 0; } /** - * cs5520_remove_one - device unload - * @pdev: PCI device being removed + * cs5520_pci_device_suspend - device suspend + * @pdev: PCI device * - * Handle an unplug/unload event for a PCI device. Unload the - * PCI driver but do not use the default handler as we manage - * resources ourself and *MUST NOT* disable the device as it has - * other functions. + * We have to cut and waste bits from the standard method because + * the 5520 is a bit odd and not just a pure ATA device. As a result + * we must not disable it. The needed code is short and this avoids + * chip specific mess in the core code. */ -static void __devexit cs5520_remove_one(struct pci_dev *pdev) +static int cs5520_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg) { - struct device *dev = pci_dev_to_dev(pdev); - struct ata_host *host = dev_get_drvdata(dev); + struct ata_host *host = pci_get_drvdata(pdev); + int rc = 0; - ata_host_remove(host); - dev_set_drvdata(dev, NULL); + rc = ata_host_suspend(host, mesg); + if (rc) + return rc; + + pci_save_state(pdev); + return 0; } +#endif /* CONFIG_PM_SLEEP */ /* For now keep DMA off. We can set it for all but A rev CS5510 once the core ATA code can handle it */ -static struct pci_device_id pata_cs5520[] = { - { PCI_DEVICE(PCI_VENDOR_ID_CYRIX, PCI_DEVICE_ID_CYRIX_5510), }, - { PCI_DEVICE(PCI_VENDOR_ID_CYRIX, PCI_DEVICE_ID_CYRIX_5520), }, - { 0, }, +static const struct pci_device_id pata_cs5520[] = { + { PCI_VDEVICE(CYRIX, PCI_DEVICE_ID_CYRIX_5510), }, + { PCI_VDEVICE(CYRIX, PCI_DEVICE_ID_CYRIX_5520), }, + + { }, }; static struct pci_driver cs5520_pci_driver = { .name = DRV_NAME, .id_table = pata_cs5520, .probe = cs5520_init_one, - .remove = cs5520_remove_one + .remove = ata_pci_remove_one, +#ifdef CONFIG_PM_SLEEP + .suspend = cs5520_pci_device_suspend, + .resume = cs5520_reinit_one, +#endif }; - -static int __init cs5520_init(void) -{ - return pci_register_driver(&cs5520_pci_driver); -} - -static void __exit cs5520_exit(void) -{ - pci_unregister_driver(&cs5520_pci_driver); -} +module_pci_driver(cs5520_pci_driver); MODULE_AUTHOR("Alan Cox"); MODULE_DESCRIPTION("low-level driver for Cyrix CS5510/5520"); MODULE_LICENSE("GPL"); MODULE_DEVICE_TABLE(pci, pata_cs5520); MODULE_VERSION(DRV_VERSION); - -module_init(cs5520_init); -module_exit(cs5520_exit); - |