/* * Marvell PATA driver. * * For the moment we drive the PATA port in legacy mode. That * isn't making full use of the device functionality but it is * easy to get working. * * (c) 2006 Red Hat <alan@redhat.com> */ #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/device.h> #include <scsi/scsi_host.h> #include <linux/libata.h> #include <linux/ata.h> #define DRV_NAME "pata_marvell" #define DRV_VERSION "0.1.4" /** * marvell_pre_reset - check for 40/80 pin * @ap: Port * @deadline: deadline jiffies for the operation * * Perform the PATA port setup we need. */ static int marvell_pre_reset(struct ata_port *ap, unsigned long deadline) { struct pci_dev *pdev = to_pci_dev(ap->host->dev); u32 devices; void __iomem *barp; int i; /* Check if our port is enabled */ barp = pci_iomap(pdev, 5, 0x10); if (barp == NULL) return -ENOMEM; printk("BAR5:"); for(i = 0; i <= 0x0F; i++) printk("%02X:%02X ", i, readb(barp + i)); printk("\n"); devices = readl(barp + 0x0C); pci_iounmap(pdev, barp); if ((pdev->device == 0x6145) && (ap->port_no == 0) && (!(devices & 0x10))) /* PATA enable ? */ return -ENOENT; return ata_std_prereset(ap, deadline); } static int marvell_cable_detect(struct ata_port *ap) { /* Cable type */ switch(ap->port_no) { case 0: if (ioread8(ap->ioaddr.bmdma_addr + 1) & 1) return ATA_CBL_PATA40; return ATA_CBL_PATA80; case 1: /* Legacy SATA port */ return ATA_CBL_SATA; } BUG(); return 0; /* Our BUG macro needs the right markup */ } /** * marvell_error_handler - Setup and error handler * @ap: Port to handle * * LOCKING: * None (inherited from caller). */ static void marvell_error_handler(struct ata_port *ap) { return ata_bmdma_drive_eh(ap, marvell_pre_reset, ata_std_softreset, NULL, ata_std_postreset); } /* No PIO or DMA methods needed for this device */ static struct scsi_host_template marvell_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, /* Use standard CHS mapping rules */ .bios_param = ata_std_bios_param, }; static const struct ata_port_operations marvell_ops = { .port_disable = ata_port_disable, /* Task file is PCI ATA format, use helpers */ .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 = marvell_error_handler, .post_internal_cmd = ata_bmdma_post_internal_cmd, .cable_detect = marvell_cable_detect, /* BMDMA handling is PCI ATA format, use helpers */ .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_data_xfer, /* Timeout handling */ .irq_handler = ata_interrupt, .irq_clear = ata_bmdma_irq_clear, .irq_on = ata_irq_on, .irq_ack = ata_irq_ack, /* Generic PATA PCI ATA helpers */ .port_start = ata_port_start, }; /** * marvell_init_one - Register Marvell ATA PCI device with kernel services * @pdev: PCI device to register * @ent: Entry in marvell_pci_tbl matching with @pdev * * Called from kernel PCI layer. * * LOCKING: * Inherited from PCI layer (may sleep). * * RETURNS: * Zero on success, or -ERRNO value. */ static int marvell_init_one (struct pci_dev *pdev, const struct pci_device_id *id) { static const struct ata_port_info info = { .sht = &marvell_sht, .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST, .pio_mask = 0x1f, .mwdma_mask = 0x07, .udma_mask = 0x3f, .port_ops = &marvell_ops, }; static const struct ata_port_info info_sata = { .sht = &marvell_sht, /* Slave possible as its magically mapped not real */ .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST, .pio_mask = 0x1f, .mwdma_mask = 0x07, .udma_mask = 0x7f, .port_ops = &marvell_ops, }; const struct ata_port_info *ppi[] = { &info, &info_sata }; if (pdev->device == 0x6101) ppi[1] = &ata_dummy_port_info; return ata_pci_init_one(pdev, ppi); } static const struct pci_device_id marvell_pci_tbl[] = { { PCI_DEVICE(0x11AB, 0x6101), }, { PCI_DEVICE(0x11AB, 0x6145), }, { } /* terminate list */ }; static struct pci_driver marvell_pci_driver = { .name = DRV_NAME, .id_table = marvell_pci_tbl, .probe = marvell_init_one, .remove = ata_pci_remove_one, #ifdef CONFIG_PM .suspend = ata_pci_device_suspend, .resume = ata_pci_device_resume, #endif }; static int __init marvell_init(void) { return pci_register_driver(&marvell_pci_driver); } static void __exit marvell_exit(void) { pci_unregister_driver(&marvell_pci_driver); } module_init(marvell_init); module_exit(marvell_exit); MODULE_AUTHOR("Alan Cox"); MODULE_DESCRIPTION("SCSI low-level driver for Marvell ATA in legacy mode"); MODULE_LICENSE("GPL"); MODULE_DEVICE_TABLE(pci, marvell_pci_tbl); MODULE_VERSION(DRV_VERSION);