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path: root/drivers/ata/pata_hpt366.c
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Diffstat (limited to 'drivers/ata/pata_hpt366.c')
-rw-r--r--drivers/ata/pata_hpt366.c400
1 files changed, 174 insertions, 226 deletions
diff --git a/drivers/ata/pata_hpt366.c b/drivers/ata/pata_hpt366.c
index cf656ecbe50..cbc3de793d1 100644
--- a/drivers/ata/pata_hpt366.c
+++ b/drivers/ata/pata_hpt366.c
@@ -11,49 +11,45 @@
*
*
* TODO
- * Maybe PLL mode
- * Look into engine reset on timeout errors. Should not be
- * required.
+ * Look into engine reset on timeout errors. Should not be required.
*/
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#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_hpt366"
-#define DRV_VERSION "0.5"
+#define DRV_VERSION "0.6.11"
struct hpt_clock {
- u8 xfer_speed;
+ u8 xfer_mode;
u32 timing;
};
/* key for bus clock timings
* bit
- * 0:3 data_high_time. inactive time of DIOW_/DIOR_ for PIO and MW
- * DMA. cycles = value + 1
- * 4:8 data_low_time. active time of DIOW_/DIOR_ for PIO and MW
- * DMA. cycles = value + 1
- * 9:12 cmd_high_time. inactive time of DIOW_/DIOR_ during task file
+ * 0:3 data_high_time. Inactive time of DIOW_/DIOR_ for PIO and MW DMA.
+ * cycles = value + 1
+ * 4:7 data_low_time. Active time of DIOW_/DIOR_ for PIO and MW DMA.
+ * cycles = value + 1
+ * 8:11 cmd_high_time. Inactive time of DIOW_/DIOR_ during task file
* register access.
- * 13:17 cmd_low_time. active time of DIOW_/DIOR_ during task file
+ * 12:15 cmd_low_time. Active time of DIOW_/DIOR_ during task file
* register access.
- * 18:21 udma_cycle_time. clock freq and clock cycles for UDMA xfer.
- * during task file register access.
- * 22:24 pre_high_time. time to initialize 1st cycle for PIO and MW DMA
- * xfer.
- * 25:27 cmd_pre_high_time. time to initialize 1st PIO cycle for task
+ * 16:18 udma_cycle_time. Clock cycles for UDMA xfer?
+ * 19:21 pre_high_time. Time to initialize 1st cycle for PIO and MW DMA xfer.
+ * 22:24 cmd_pre_high_time. Time to initialize 1st PIO cycle for task file
* register access.
- * 28 UDMA enable
- * 29 DMA enable
- * 30 PIO_MST enable. if set, the chip is in bus master mode during
- * PIO.
+ * 28 UDMA enable.
+ * 29 DMA enable.
+ * 30 PIO_MST enable. If set, the chip is in bus master mode during
+ * PIO xfer.
* 31 FIFO enable.
*/
@@ -114,18 +110,45 @@ static const struct hpt_clock hpt366_25[] = {
{ 0, 0x01208585 }
};
-static const char *bad_ata33[] = {
- "Maxtor 92720U8", "Maxtor 92040U6", "Maxtor 91360U4", "Maxtor 91020U3", "Maxtor 90845U3", "Maxtor 90650U2",
- "Maxtor 91360D8", "Maxtor 91190D7", "Maxtor 91020D6", "Maxtor 90845D5", "Maxtor 90680D4", "Maxtor 90510D3", "Maxtor 90340D2",
- "Maxtor 91152D8", "Maxtor 91008D7", "Maxtor 90845D6", "Maxtor 90840D6", "Maxtor 90720D5", "Maxtor 90648D5", "Maxtor 90576D4",
+/**
+ * hpt36x_find_mode - find the hpt36x timing
+ * @ap: ATA port
+ * @speed: transfer mode
+ *
+ * Return the 32bit register programming information for this channel
+ * that matches the speed provided.
+ */
+
+static u32 hpt36x_find_mode(struct ata_port *ap, int speed)
+{
+ struct hpt_clock *clocks = ap->host->private_data;
+
+ while (clocks->xfer_mode) {
+ if (clocks->xfer_mode == speed)
+ return clocks->timing;
+ clocks++;
+ }
+ BUG();
+ return 0xffffffffU; /* silence compiler warning */
+}
+
+static const char * const bad_ata33[] = {
+ "Maxtor 92720U8", "Maxtor 92040U6", "Maxtor 91360U4", "Maxtor 91020U3",
+ "Maxtor 90845U3", "Maxtor 90650U2",
+ "Maxtor 91360D8", "Maxtor 91190D7", "Maxtor 91020D6", "Maxtor 90845D5",
+ "Maxtor 90680D4", "Maxtor 90510D3", "Maxtor 90340D2",
+ "Maxtor 91152D8", "Maxtor 91008D7", "Maxtor 90845D6", "Maxtor 90840D6",
+ "Maxtor 90720D5", "Maxtor 90648D5", "Maxtor 90576D4",
"Maxtor 90510D4",
"Maxtor 90432D3", "Maxtor 90288D2", "Maxtor 90256D2",
- "Maxtor 91000D8", "Maxtor 90910D8", "Maxtor 90875D7", "Maxtor 90840D7", "Maxtor 90750D6", "Maxtor 90625D5", "Maxtor 90500D4",
- "Maxtor 91728D8", "Maxtor 91512D7", "Maxtor 91303D6", "Maxtor 91080D5", "Maxtor 90845D4", "Maxtor 90680D4", "Maxtor 90648D3", "Maxtor 90432D2",
+ "Maxtor 91000D8", "Maxtor 90910D8", "Maxtor 90875D7", "Maxtor 90840D7",
+ "Maxtor 90750D6", "Maxtor 90625D5", "Maxtor 90500D4",
+ "Maxtor 91728D8", "Maxtor 91512D7", "Maxtor 91303D6", "Maxtor 91080D5",
+ "Maxtor 90845D4", "Maxtor 90680D4", "Maxtor 90648D3", "Maxtor 90432D2",
NULL
};
-static const char *bad_ata66_4[] = {
+static const char * const bad_ata66_4[] = {
"IBM-DTLA-307075",
"IBM-DTLA-307060",
"IBM-DTLA-307045",
@@ -144,31 +167,22 @@ static const char *bad_ata66_4[] = {
NULL
};
-static const char *bad_ata66_3[] = {
+static const char * const bad_ata66_3[] = {
"WDC AC310200R",
NULL
};
-static int hpt_dma_blacklisted(const struct ata_device *dev, char *modestr, const char *list[])
+static int hpt_dma_blacklisted(const struct ata_device *dev, char *modestr,
+ const char * const list[])
{
- unsigned char model_num[40];
- char *s;
- unsigned int len;
+ unsigned char model_num[ATA_ID_PROD_LEN + 1];
int i = 0;
- ata_id_string(dev->id, model_num, ATA_ID_PROD_OFS, sizeof(model_num));
- s = &model_num[0];
- len = strnlen(s, sizeof(model_num));
+ ata_id_c_string(dev->id, model_num, ATA_ID_PROD, sizeof(model_num));
- /* ATAPI specifies that empty space is blank-filled; remove blanks */
- while ((len > 0) && (s[len - 1] == ' ')) {
- len--;
- s[len] = 0;
- }
-
- while(list[i] != NULL) {
- if (!strncmp(list[i], s, len)) {
- printk(KERN_WARNING DRV_NAME ": %s is not supported for %s.\n",
+ while (list[i] != NULL) {
+ if (!strcmp(list[i], model_num)) {
+ pr_warn("%s is not supported for %s\n",
modestr, list[i]);
return 1;
}
@@ -179,70 +193,66 @@ static int hpt_dma_blacklisted(const struct ata_device *dev, char *modestr, cons
/**
* hpt366_filter - mode selection filter
- * @ap: ATA interface
* @adev: ATA device
*
* Block UDMA on devices that cause trouble with this controller.
*/
-static unsigned long hpt366_filter(const struct ata_port *ap, struct ata_device *adev, unsigned long mask)
+static unsigned long hpt366_filter(struct ata_device *adev, unsigned long mask)
{
if (adev->class == ATA_DEV_ATA) {
if (hpt_dma_blacklisted(adev, "UDMA", bad_ata33))
mask &= ~ATA_MASK_UDMA;
if (hpt_dma_blacklisted(adev, "UDMA3", bad_ata66_3))
- mask &= ~(0x07 << ATA_SHIFT_UDMA);
+ mask &= ~(0xF8 << ATA_SHIFT_UDMA);
if (hpt_dma_blacklisted(adev, "UDMA4", bad_ata66_4))
- mask &= ~(0x0F << ATA_SHIFT_UDMA);
- }
- return ata_pci_default_filter(ap, adev, mask);
-}
+ mask &= ~(0xF0 << ATA_SHIFT_UDMA);
+ } else if (adev->class == ATA_DEV_ATAPI)
+ mask &= ~(ATA_MASK_MWDMA | ATA_MASK_UDMA);
-/**
- * hpt36x_find_mode - reset the hpt36x bus
- * @ap: ATA port
- * @speed: transfer mode
- *
- * Return the 32bit register programming information for this channel
- * that matches the speed provided.
- */
-
-static u32 hpt36x_find_mode(struct ata_port *ap, int speed)
-{
- struct hpt_clock *clocks = ap->host->private_data;
-
- while(clocks->xfer_speed) {
- if (clocks->xfer_speed == speed)
- return clocks->timing;
- clocks++;
- }
- BUG();
- return 0xffffffffU; /* silence compiler warning */
+ return mask;
}
-static int hpt36x_pre_reset(struct ata_port *ap)
+static int hpt36x_cable_detect(struct ata_port *ap)
{
- u8 ata66;
struct pci_dev *pdev = to_pci_dev(ap->host->dev);
+ u8 ata66;
+ /*
+ * Each channel of pata_hpt366 occupies separate PCI function
+ * as the primary channel and bit1 indicates the cable type.
+ */
pci_read_config_byte(pdev, 0x5A, &ata66);
- if (ata66 & (1 << ap->port_no))
- ap->cbl = ATA_CBL_PATA40;
- else
- ap->cbl = ATA_CBL_PATA80;
- return ata_std_prereset(ap);
+ if (ata66 & 2)
+ return ATA_CBL_PATA40;
+ return ATA_CBL_PATA80;
}
-/**
- * hpt36x_error_handler - reset the hpt36x bus
- * @ap: ATA port to reset
- *
- * Perform the reset handling for the 366/368
- */
-
-static void hpt36x_error_handler(struct ata_port *ap)
+static void hpt366_set_mode(struct ata_port *ap, struct ata_device *adev,
+ u8 mode)
{
- ata_bmdma_drive_eh(ap, hpt36x_pre_reset, ata_std_softreset, NULL, ata_std_postreset);
+ struct pci_dev *pdev = to_pci_dev(ap->host->dev);
+ u32 addr = 0x40 + 4 * adev->devno;
+ u32 mask, reg, t;
+
+ /* determine timing mask and find matching clock entry */
+ if (mode < XFER_MW_DMA_0)
+ mask = 0xc1f8ffff;
+ else if (mode < XFER_UDMA_0)
+ mask = 0x303800ff;
+ else
+ mask = 0x30070000;
+
+ t = hpt36x_find_mode(ap, mode);
+
+ /*
+ * Combine new mode bits with old config bits and disable
+ * on-chip PIO FIFO/buffer (and PIO MST mode as well) to avoid
+ * problems handling I/O errors later.
+ */
+ pci_read_config_dword(pdev, addr, &reg);
+ reg = ((reg & ~mask) | (t & mask)) & ~0xc0000000;
+ pci_write_config_dword(pdev, addr, reg);
}
/**
@@ -255,28 +265,7 @@ static void hpt36x_error_handler(struct ata_port *ap)
static void hpt366_set_piomode(struct ata_port *ap, struct ata_device *adev)
{
- struct pci_dev *pdev = to_pci_dev(ap->host->dev);
- u32 addr1, addr2;
- u32 reg;
- u32 mode;
- u8 fast;
-
- addr1 = 0x40 + 4 * (adev->devno + 2 * ap->port_no);
- addr2 = 0x51 + 4 * ap->port_no;
-
- /* Fast interrupt prediction disable, hold off interrupt disable */
- pci_read_config_byte(pdev, addr2, &fast);
- if (fast & 0x80) {
- fast &= ~0x80;
- pci_write_config_byte(pdev, addr2, fast);
- }
-
- pci_read_config_dword(pdev, addr1, &reg);
- mode = hpt36x_find_mode(ap, adev->pio_mode);
- mode &= ~0x8000000; /* No FIFO in PIO */
- mode &= ~0x30070000; /* Leave config bits alone */
- reg &= 0x30070000; /* Strip timing bits */
- pci_write_config_dword(pdev, addr1, reg | mode);
+ hpt366_set_mode(ap, adev, adev->pio_mode);
}
/**
@@ -290,46 +279,11 @@ static void hpt366_set_piomode(struct ata_port *ap, struct ata_device *adev)
static void hpt366_set_dmamode(struct ata_port *ap, struct ata_device *adev)
{
- struct pci_dev *pdev = to_pci_dev(ap->host->dev);
- u32 addr1, addr2;
- u32 reg;
- u32 mode;
- u8 fast;
-
- addr1 = 0x40 + 4 * (adev->devno + 2 * ap->port_no);
- addr2 = 0x51 + 4 * ap->port_no;
-
- /* Fast interrupt prediction disable, hold off interrupt disable */
- pci_read_config_byte(pdev, addr2, &fast);
- if (fast & 0x80) {
- fast &= ~0x80;
- pci_write_config_byte(pdev, addr2, fast);
- }
-
- pci_read_config_dword(pdev, addr1, &reg);
- mode = hpt36x_find_mode(ap, adev->dma_mode);
- mode |= 0x8000000; /* FIFO in MWDMA or UDMA */
- mode &= ~0xC0000000; /* Leave config bits alone */
- reg &= 0xC0000000; /* Strip timing bits */
- pci_write_config_dword(pdev, addr1, reg | mode);
+ hpt366_set_mode(ap, adev, adev->dma_mode);
}
static struct scsi_host_template hpt36x_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),
};
/*
@@ -337,39 +291,34 @@ static struct scsi_host_template hpt36x_sht = {
*/
static struct ata_port_operations hpt366_port_ops = {
- .port_disable = ata_port_disable,
+ .inherits = &ata_bmdma_port_ops,
+ .cable_detect = hpt36x_cable_detect,
+ .mode_filter = hpt366_filter,
.set_piomode = hpt366_set_piomode,
.set_dmamode = hpt366_set_dmamode,
- .mode_filter = hpt366_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 = hpt36x_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,
+/**
+ * hpt36x_init_chipset - common chip setup
+ * @dev: PCI device
+ *
+ * Perform the chip setup work that must be done at both init and
+ * resume time
+ */
- .data_xfer = ata_pio_data_xfer,
+static void hpt36x_init_chipset(struct pci_dev *dev)
+{
+ u8 drive_fast;
- .irq_handler = ata_interrupt,
- .irq_clear = ata_bmdma_irq_clear,
+ pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE, (L1_CACHE_BYTES / 4));
+ pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0x78);
+ pci_write_config_byte(dev, PCI_MIN_GNT, 0x08);
+ pci_write_config_byte(dev, PCI_MAX_LAT, 0x08);
- .port_start = ata_port_start,
- .port_stop = ata_port_stop,
- .host_stop = ata_host_stop
-};
+ pci_read_config_byte(dev, 0x51, &drive_fast);
+ if (drive_fast & 0x80)
+ pci_write_config_byte(dev, 0x51, drive_fast & ~0x80);
+}
/**
* hpt36x_init_one - Initialise an HPT366/368
@@ -394,85 +343,84 @@ static struct ata_port_operations hpt366_port_ops = {
static int hpt36x_init_one(struct pci_dev *dev, const struct pci_device_id *id)
{
- static struct ata_port_info info_hpt366 = {
- .sht = &hpt36x_sht,
- .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST,
- .pio_mask = 0x1f,
- .mwdma_mask = 0x07,
- .udma_mask = 0x1f,
+ static const struct ata_port_info info_hpt366 = {
+ .flags = ATA_FLAG_SLAVE_POSS,
+ .pio_mask = ATA_PIO4,
+ .mwdma_mask = ATA_MWDMA2,
+ .udma_mask = ATA_UDMA4,
.port_ops = &hpt366_port_ops
};
- struct ata_port_info *port_info[2] = {&info_hpt366, &info_hpt366};
+ const struct ata_port_info *ppi[] = { &info_hpt366, NULL };
- u32 class_rev;
+ void *hpriv = NULL;
u32 reg1;
- u8 drive_fast;
+ int rc;
- pci_read_config_dword(dev, PCI_CLASS_REVISION, &class_rev);
- class_rev &= 0xFF;
+ rc = pcim_enable_device(dev);
+ if (rc)
+ return rc;
/* May be a later chip in disguise. Check */
/* Newer chips are not in the HPT36x driver. Ignore them */
- if (class_rev > 2)
- return -ENODEV;
-
- pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE, (L1_CACHE_BYTES / 4));
- pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0x78);
- pci_write_config_byte(dev, PCI_MIN_GNT, 0x08);
- pci_write_config_byte(dev, PCI_MAX_LAT, 0x08);
+ if (dev->revision > 2)
+ return -ENODEV;
- pci_read_config_byte(dev, 0x51, &drive_fast);
- if (drive_fast & 0x80)
- pci_write_config_byte(dev, 0x51, drive_fast & ~0x80);
+ hpt36x_init_chipset(dev);
pci_read_config_dword(dev, 0x40, &reg1);
/* PCI clocking determines the ATA timing values to use */
/* info_hpt366 is safe against re-entry so we can scribble on it */
- switch(reg1 & 0x700) {
- case 5:
- info_hpt366.private_data = &hpt366_40;
- break;
- case 9:
- info_hpt366.private_data = &hpt366_25;
- break;
- default:
- info_hpt366.private_data = &hpt366_33;
- break;
+ switch ((reg1 & 0x700) >> 8) {
+ case 9:
+ hpriv = &hpt366_40;
+ break;
+ case 5:
+ hpriv = &hpt366_25;
+ break;
+ default:
+ hpriv = &hpt366_33;
+ break;
}
/* Now kick off ATA set up */
- return ata_pci_init_one(dev, port_info, 2);
+ return ata_pci_bmdma_init_one(dev, ppi, &hpt36x_sht, hpriv, 0);
}
-static struct pci_device_id hpt36x[] = {
- { PCI_DEVICE(PCI_VENDOR_ID_TTI, PCI_DEVICE_ID_TTI_HPT366), },
- { 0, },
+#ifdef CONFIG_PM_SLEEP
+static int hpt36x_reinit_one(struct pci_dev *dev)
+{
+ struct ata_host *host = pci_get_drvdata(dev);
+ int rc;
+
+ rc = ata_pci_device_do_resume(dev);
+ if (rc)
+ return rc;
+ hpt36x_init_chipset(dev);
+ ata_host_resume(host);
+ return 0;
+}
+#endif
+
+static const struct pci_device_id hpt36x[] = {
+ { PCI_VDEVICE(TTI, PCI_DEVICE_ID_TTI_HPT366), },
+ { },
};
static struct pci_driver hpt36x_pci_driver = {
- .name = DRV_NAME,
+ .name = DRV_NAME,
.id_table = hpt36x,
- .probe = hpt36x_init_one,
- .remove = ata_pci_remove_one
+ .probe = hpt36x_init_one,
+ .remove = ata_pci_remove_one,
+#ifdef CONFIG_PM_SLEEP
+ .suspend = ata_pci_device_suspend,
+ .resume = hpt36x_reinit_one,
+#endif
};
-static int __init hpt36x_init(void)
-{
- return pci_register_driver(&hpt36x_pci_driver);
-}
-
-
-static void __exit hpt36x_exit(void)
-{
- pci_unregister_driver(&hpt36x_pci_driver);
-}
-
+module_pci_driver(hpt36x_pci_driver);
MODULE_AUTHOR("Alan Cox");
MODULE_DESCRIPTION("low-level driver for the Highpoint HPT366/368");
MODULE_LICENSE("GPL");
MODULE_DEVICE_TABLE(pci, hpt36x);
MODULE_VERSION(DRV_VERSION);
-
-module_init(hpt36x_init);
-module_exit(hpt36x_exit);
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