[libata] Add a bunch of PATA drivers.
The vast majority of drivers and changes are from Alan Cox. Albert Lee
contributed and maintains pata_pdc2027x. Adrian Bunk, Andrew Morton,
and Tejun Heo contributed various minor fixes and updates.
Signed-off-by: Jeff Garzik <jeff@garzik.org>
diff --git a/drivers/ata/pata_hpt3x3.c b/drivers/ata/pata_hpt3x3.c
new file mode 100644
index 0000000..c93406e
--- /dev/null
+++ b/drivers/ata/pata_hpt3x3.c
@@ -0,0 +1,226 @@
+/*
+ * pata_hpt3x3 - HPT3x3 driver
+ * (c) Copyright 2005-2006 Red Hat
+ *
+ * Was pata_hpt34x but the naming was confusing as it supported the
+ * 343 and 363 so it has been renamed.
+ *
+ * Based on:
+ * linux/drivers/ide/pci/hpt34x.c Version 0.40 Sept 10, 2002
+ * Copyright (C) 1998-2000 Andre Hedrick <andre@linux-ide.org>
+ *
+ * May be copied or modified under the terms of the GNU General Public
+ * License
+ */
+
+#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_hpt3x3"
+#define DRV_VERSION "0.4.1"
+
+static int hpt3x3_probe_init(struct ata_port *ap)
+{
+ ap->cbl = ATA_CBL_PATA40;
+ return ata_std_prereset(ap);
+}
+
+/**
+ * hpt3x3_probe_reset - reset the hpt3x3 bus
+ * @ap: ATA port to reset
+ *
+ * Perform the housekeeping when doing an ATA bus reeset. We just
+ * need to force the cable type.
+ */
+
+static void hpt3x3_error_handler(struct ata_port *ap)
+{
+ return ata_bmdma_drive_eh(ap, hpt3x3_probe_init, ata_std_softreset, NULL, ata_std_postreset);
+}
+
+/**
+ * hpt3x3_set_piomode - PIO setup
+ * @ap: ATA interface
+ * @adev: device on the interface
+ *
+ * Set our PIO requirements. This is fairly simple on the HPT3x3 as
+ * all we have to do is clear the MWDMA and UDMA bits then load the
+ * mode number.
+ */
+
+static void hpt3x3_set_piomode(struct ata_port *ap, struct ata_device *adev)
+{
+ struct pci_dev *pdev = to_pci_dev(ap->host->dev);
+ u32 r1, r2;
+ int dn = 2 * ap->port_no + adev->devno;
+
+ pci_read_config_dword(pdev, 0x44, &r1);
+ pci_read_config_dword(pdev, 0x48, &r2);
+ /* Load the PIO timing number */
+ r1 &= ~(7 << (3 * dn));
+ r1 |= (adev->pio_mode - XFER_PIO_0) << (3 * dn);
+ r2 &= ~(0x11 << dn); /* Clear MWDMA and UDMA bits */
+
+ pci_write_config_dword(pdev, 0x44, r1);
+ pci_write_config_dword(pdev, 0x48, r2);
+}
+
+/**
+ * hpt3x3_set_dmamode - DMA timing setup
+ * @ap: ATA interface
+ * @adev: Device being configured
+ *
+ * Set up the channel for MWDMA or UDMA modes. Much the same as with
+ * PIO, load the mode number and then set MWDMA or UDMA flag.
+ */
+
+static void hpt3x3_set_dmamode(struct ata_port *ap, struct ata_device *adev)
+{
+ struct pci_dev *pdev = to_pci_dev(ap->host->dev);
+ u32 r1, r2;
+ int dn = 2 * ap->port_no + adev->devno;
+ int mode_num = adev->dma_mode & 0x0F;
+
+ pci_read_config_dword(pdev, 0x44, &r1);
+ pci_read_config_dword(pdev, 0x48, &r2);
+ /* Load the timing number */
+ r1 &= ~(7 << (3 * dn));
+ r1 |= (mode_num << (3 * dn));
+ r2 &= ~(0x11 << dn); /* Clear MWDMA and UDMA bits */
+
+ if (adev->dma_mode >= XFER_UDMA_0)
+ r2 |= 0x01 << dn; /* Ultra mode */
+ else
+ r2 |= 0x10 << dn; /* MWDMA */
+
+ pci_write_config_dword(pdev, 0x44, r1);
+ pci_write_config_dword(pdev, 0x48, r2);
+}
+
+static struct scsi_host_template hpt3x3_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,
+};
+
+static struct ata_port_operations hpt3x3_port_ops = {
+ .port_disable = ata_port_disable,
+ .set_piomode = hpt3x3_set_piomode,
+ .set_dmamode = hpt3x3_set_dmamode,
+ .mode_filter = ata_pci_default_filter,
+
+ .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 = hpt3x3_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,
+ .eng_timeout = ata_eng_timeout,
+ .data_xfer = ata_pio_data_xfer,
+
+ .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
+};
+
+/**
+ * hpt3x3_init_one - Initialise an HPT343/363
+ * @dev: PCI device
+ * @id: Entry in match table
+ *
+ * Perform basic initialisation. The chip has a quirk that it won't
+ * function unless it is at XX00. The old ATA driver touched this up
+ * but we leave it for pci quirks to do properly.
+ */
+
+static int hpt3x3_init_one(struct pci_dev *dev, const struct pci_device_id *id)
+{
+ static struct ata_port_info info = {
+ .sht = &hpt3x3_sht,
+ .flags = ATA_FLAG_SLAVE_POSS|ATA_FLAG_SRST,
+ .pio_mask = 0x1f,
+ .mwdma_mask = 0x07,
+ .udma_mask = 0x07,
+ .port_ops = &hpt3x3_port_ops
+ };
+ static struct ata_port_info *port_info[2] = { &info, &info };
+ u16 cmd;
+
+ /* Initialize the board */
+ pci_write_config_word(dev, 0x80, 0x00);
+ /* Check if it is a 343 or a 363. 363 has COMMAND_MEMORY set */
+ pci_read_config_word(dev, PCI_COMMAND, &cmd);
+ if (cmd & PCI_COMMAND_MEMORY)
+ pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0xF0);
+ else
+ pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0x20);
+
+ /* Now kick off ATA set up */
+ return ata_pci_init_one(dev, port_info, 2);
+}
+
+static struct pci_device_id hpt3x3[] = {
+ { PCI_DEVICE(PCI_VENDOR_ID_TTI, PCI_DEVICE_ID_TTI_HPT343), },
+ { 0, },
+};
+
+static struct pci_driver hpt3x3_pci_driver = {
+ .name = DRV_NAME,
+ .id_table = hpt3x3,
+ .probe = hpt3x3_init_one,
+ .remove = ata_pci_remove_one
+};
+
+static int __init hpt3x3_init(void)
+{
+ return pci_register_driver(&hpt3x3_pci_driver);
+}
+
+
+static void __exit hpt3x3_exit(void)
+{
+ pci_unregister_driver(&hpt3x3_pci_driver);
+}
+
+
+MODULE_AUTHOR("Alan Cox");
+MODULE_DESCRIPTION("low-level driver for the Highpoint HPT343/363");
+MODULE_LICENSE("GPL");
+MODULE_DEVICE_TABLE(pci, hpt3x3);
+MODULE_VERSION(DRV_VERSION);
+
+module_init(hpt3x3_init);
+module_exit(hpt3x3_exit);