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[PATCH] pata_marvell: Marvell 6101/6145 PATA driver
This is a legacy mode PATA driver for the 6101/45 and will also drive the SATA ports 1 & 2 in legacy mode as well if desired. Tested and confirmed working by users. The chip supports AHCI type behaviour for SATA and has a more advanced PATA interface as well so this driver will get it working but not get best performance for now. Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Alan Cox
Jeff Garzik
parent
72dc6794fc
commit
75742cb41e
@ -328,6 +328,15 @@ config PATA_TRIFLEX
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If unsure, say N.
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config PATA_MARVELL
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tristate "Marvell PATA support via legacy mode"
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depends on PCI
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help
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This option enables limited support for the Marvell 88SE6145 ATA
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controller.
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If unsure, say N.
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config PATA_MPIIX
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tristate "Intel PATA MPIIX support"
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depends on PCI
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@ -38,6 +38,7 @@ obj-$(CONFIG_PATA_NETCELL) += pata_netcell.o
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obj-$(CONFIG_PATA_NS87410) += pata_ns87410.o
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obj-$(CONFIG_PATA_OPTI) += pata_opti.o
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obj-$(CONFIG_PATA_OPTIDMA) += pata_optidma.o
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obj-$(CONFIG_PATA_MARVELL) += pata_marvell.o
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obj-$(CONFIG_PATA_MPIIX) += pata_mpiix.o
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obj-$(CONFIG_PATA_OLDPIIX) += pata_oldpiix.o
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obj-$(CONFIG_PATA_PCMCIA) += pata_pcmcia.o
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221
drivers/ata/pata_marvell.c
Normal file
221
drivers/ata/pata_marvell.c
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@ -0,0 +1,221 @@
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/*
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* Marvell PATA driver.
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*
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* For the moment we drive the PATA port in legacy mode. That
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* isn't making full use of the device functionality but it is
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* easy to get working.
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*
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* (c) 2006 Red Hat <alan@redhat.com>
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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/device.h>
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#include <scsi/scsi_host.h>
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#include <linux/libata.h>
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#include <linux/ata.h>
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#define DRV_NAME "pata_marvell"
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#define DRV_VERSION "0.0.4t"
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/**
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* marvell_pre_reset - check for 40/80 pin
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* @ap: Port
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*
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* Perform the PATA port setup we need.
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*/
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static int marvell_pre_reset(struct ata_port *ap)
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{
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struct pci_dev *pdev = to_pci_dev(ap->host->dev);
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u32 devices;
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unsigned long bar5;
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void __iomem *barp;
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int i;
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/* Check if our port is enabled */
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bar5 = pci_resource_start(pdev, 5);
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barp = ioremap(bar5, 0x10);
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if (barp == NULL)
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return -ENOMEM;
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printk("BAR5:");
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for(i = 0; i <= 0x0F; i++)
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printk("%02X:%02X ", i, readb(barp + i));
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printk("\n");
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devices = readl(barp + 0x0C);
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iounmap(barp);
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if (pdev->device == 0x6145 && ap->port_no == 0 && !(devices & 0x10)) /* PATA enable ? */
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return -ENOENT;
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/* Cable type */
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switch(ap->port_no)
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{
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case 0:
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/* Might be backward, docs unclear */
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if(inb(ap->ioaddr.bmdma_addr + 1) & 1)
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ap->cbl = ATA_CBL_PATA80;
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else
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ap->cbl = ATA_CBL_PATA40;
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case 1: /* Legacy SATA port */
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ap->cbl = ATA_CBL_SATA;
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break;
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}
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return ata_std_prereset(ap);
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}
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/**
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* marvell_error_handler - Setup and error handler
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* @ap: Port to handle
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*
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* LOCKING:
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* None (inherited from caller).
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*/
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static void marvell_error_handler(struct ata_port *ap)
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{
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return ata_bmdma_drive_eh(ap, marvell_pre_reset, ata_std_softreset, NULL, ata_std_postreset);
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}
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/* No PIO or DMA methods needed for this device */
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static struct scsi_host_template marvell_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 = LIBATA_MAX_PRD,
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.max_sectors = ATA_MAX_SECTORS,
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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 = ATA_SHT_USE_CLUSTERING,
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.proc_name = DRV_NAME,
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.dma_boundary = ATA_DMA_BOUNDARY,
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.slave_configure = ata_scsi_slave_config,
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/* Use standard CHS mapping rules */
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.bios_param = ata_std_bios_param,
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};
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static const struct ata_port_operations marvell_ops = {
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.port_disable = ata_port_disable,
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/* Task file is PCI ATA format, use helpers */
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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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.exec_command = ata_exec_command,
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.dev_select = ata_std_dev_select,
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.freeze = ata_bmdma_freeze,
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.thaw = ata_bmdma_thaw,
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.error_handler = marvell_error_handler,
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.post_internal_cmd = ata_bmdma_post_internal_cmd,
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/* BMDMA handling is PCI ATA format, use helpers */
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.bmdma_setup = ata_bmdma_setup,
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.bmdma_start = ata_bmdma_start,
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.bmdma_stop = ata_bmdma_stop,
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.bmdma_status = ata_bmdma_status,
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.qc_prep = ata_qc_prep,
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.qc_issue = ata_qc_issue_prot,
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.data_xfer = ata_pio_data_xfer,
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/* Timeout handling */
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.eng_timeout = ata_eng_timeout,
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.irq_handler = ata_interrupt,
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.irq_clear = ata_bmdma_irq_clear,
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/* Generic PATA PCI ATA helpers */
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.port_start = ata_port_start,
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.port_stop = ata_port_stop,
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.host_stop = ata_host_stop,
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};
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/**
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* marvell_init_one - Register Marvell ATA PCI device with kernel services
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* @pdev: PCI device to register
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* @ent: Entry in marvell_pci_tbl matching with @pdev
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*
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* Called from kernel PCI layer.
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*
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* LOCKING:
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* Inherited from PCI layer (may sleep).
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*
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* RETURNS:
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* Zero on success, or -ERRNO value.
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*/
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static int marvell_init_one (struct pci_dev *pdev, const struct pci_device_id *id)
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{
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static struct ata_port_info info = {
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.sht = &marvell_sht,
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.flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST,
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.pio_mask = 0x1f,
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.mwdma_mask = 0x07,
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.udma_mask = 0x3f,
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.port_ops = &marvell_ops,
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};
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static struct ata_port_info info_sata = {
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.sht = &marvell_sht,
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/* Slave possible as its magically mapped not real */
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.flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST,
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.pio_mask = 0x1f,
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.mwdma_mask = 0x07,
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.udma_mask = 0x7f,
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.port_ops = &marvell_ops,
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};
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struct ata_port_info *port_info[2] = { &info, &info_sata };
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int n_port = 2;
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if (pdev->device == 0x6101)
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n_port = 1;
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return ata_pci_init_one(pdev, port_info, n_port);
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}
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static const struct pci_device_id marvell_pci_tbl[] = {
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{ PCI_DEVICE(0x11AB, 0x6101), },
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{ PCI_DEVICE(0x11AB, 0x6145), },
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{ } /* terminate list */
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};
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static struct pci_driver marvell_pci_driver = {
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.name = DRV_NAME,
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.id_table = marvell_pci_tbl,
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.probe = marvell_init_one,
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.remove = ata_pci_remove_one,
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};
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static int __init marvell_init(void)
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{
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return pci_register_driver(&marvell_pci_driver);
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}
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static void __exit marvell_exit(void)
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{
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pci_unregister_driver(&marvell_pci_driver);
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}
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module_init(marvell_init);
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module_exit(marvell_exit);
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MODULE_AUTHOR("Alan Cox");
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MODULE_DESCRIPTION("SCSI low-level driver for Marvell ATA in legacy mode");
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MODULE_LICENSE("GPL");
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MODULE_DEVICE_TABLE(pci, marvell_pci_tbl);
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MODULE_VERSION(DRV_VERSION);
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