/*
- * New ATA layer SC1200 driver Alan Cox <alan@redhat.com>
+ * New ATA layer SC1200 driver Alan Cox <alan@lxorguk.ukuu.org.uk>
*
* TODO: Mode selection filtering
* TODO: Can't enable second channel until ATA core has serialize
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
+ *
*/
#include <linux/kernel.h>
#include <linux/libata.h>
#define DRV_NAME "sc1200"
-#define DRV_VERSION "0.2.3"
+#define DRV_VERSION "0.2.6"
#define SC1200_REV_A 0x00
#define SC1200_REV_B1 0x01
* Return the PCI bus clocking for the SC1200 chipset configuration
* in use. We return 0 for 33MHz 1 for 48MHz and 2 for 66Mhz
*/
-
+
static int sc1200_clock(void)
{
/* Magic registers that give us the chipset data */
u8 chip_id = inb(0x903C);
u8 silicon_rev = inb(0x903D);
u16 pci_clock;
-
+
if (chip_id == 0x04 && silicon_rev < SC1200_REV_B1)
return 0; /* 33 MHz mode */
*
* Set our PIO requirements. This is fairly simple on the SC1200
*/
-
+
static void sc1200_set_piomode(struct ata_port *ap, struct ata_device *adev)
{
static const u32 pio_timings[4][5] = {
u32 format;
unsigned int reg = 0x40 + 0x10 * ap->port_no;
int mode = adev->pio_mode - XFER_PIO_0;
-
+
pci_read_config_dword(pdev, reg + 4, &format);
format >>= 31;
format += sc1200_clock();
- pci_write_config_dword(pdev, reg + 8 * adev->devno,
+ pci_write_config_dword(pdev, reg + 8 * adev->devno,
pio_timings[format][mode]);
}
* We cannot mix MWDMA and UDMA without reloading timings each switch
* master to slave.
*/
-
+
static void sc1200_set_dmamode(struct ata_port *ap, struct ata_device *adev)
{
static const u32 udma_timing[3][3] = {
{ 0x00932470, 0x00922260, 0x00922140 },
{ 0x009436A1, 0x00933481, 0x00923261 }
};
-
+
static const u32 mwdma_timing[3][3] = {
{ 0x00077771, 0x00012121, 0x00002020 },
{ 0x000BBBB2, 0x00024241, 0x00013131 },
{ 0x000FFFF3, 0x00035352, 0x00015151 }
};
-
+
int clock = sc1200_clock();
struct pci_dev *pdev = to_pci_dev(ap->host->dev);
unsigned int reg = 0x40 + 0x10 * ap->port_no;
format = udma_timing[clock][mode - XFER_UDMA_0];
else
format = mwdma_timing[clock][mode - XFER_MW_DMA_0];
-
+
if (adev->devno == 0) {
u32 timings;
-
+
pci_read_config_dword(pdev, reg + 4, &timings);
timings &= 0x80000000UL;
timings |= format;
}
/**
- * sc1200_qc_issue_prot - command issue
+ * sc1200_qc_issue - command issue
* @qc: command pending
*
* Called when the libata layer is about to issue a command. We wrap
* this interface so that we can load the correct ATA timings if
- * neccessary. Specifically we have a problem that there is only
+ * necessary. Specifically we have a problem that there is only
* one MWDMA/UDMA bit.
*/
-static unsigned int sc1200_qc_issue_prot(struct ata_queued_cmd *qc)
+static unsigned int sc1200_qc_issue(struct ata_queued_cmd *qc)
{
struct ata_port *ap = qc->ap;
struct ata_device *adev = qc->dev;
struct ata_device *prev = ap->private_data;
/* See if the DMA settings could be wrong */
- if (adev->dma_mode != 0 && adev != prev && prev != NULL) {
+ if (ata_dma_enabled(adev) && adev != prev && prev != NULL) {
/* Maybe, but do the channels match MWDMA/UDMA ? */
- if ((adev->dma_mode >= XFER_UDMA_0 && prev->dma_mode < XFER_UDMA_0) ||
- (adev->dma_mode < XFER_UDMA_0 && prev->dma_mode >= XFER_UDMA_0))
+ if ((ata_using_udma(adev) && !ata_using_udma(prev)) ||
+ (ata_using_udma(prev) && !ata_using_udma(adev)))
/* Switch the mode bits */
sc1200_set_dmamode(ap, adev);
}
- return ata_qc_issue_prot(qc);
+ return ata_sff_qc_issue(qc);
}
static struct scsi_host_template sc1200_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 sc1200_port_ops = {
- .port_disable = ata_port_disable,
+ .inherits = &ata_bmdma_port_ops,
+ .qc_prep = ata_sff_dumb_qc_prep,
+ .qc_issue = sc1200_qc_issue,
+ .cable_detect = ata_cable_40wire,
.set_piomode = sc1200_set_piomode,
.set_dmamode = sc1200_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,
-
- .error_handler = ata_bmdma_error_handler,
-
- .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 = sc1200_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
-};
+};
/**
* sc1200_init_one - Initialise an SC1200
* Just throw the needed data at the libata helper and it does all
* our work.
*/
-
+
static int sc1200_init_one(struct pci_dev *dev, const struct pci_device_id *id)
{
- static struct ata_port_info info = {
- .sht = &sc1200_sht,
- .flags = ATA_FLAG_SLAVE_POSS|ATA_FLAG_SRST,
+ static const struct ata_port_info info = {
+ .flags = ATA_FLAG_SLAVE_POSS,
.pio_mask = 0x1f,
.mwdma_mask = 0x07,
.udma_mask = 0x07,
.port_ops = &sc1200_port_ops
};
- static struct ata_port_info *port_info[2] = { &info, &info };
-
/* Can't enable port 2 yet, see top comments */
- return ata_pci_init_one(dev, port_info, 1);
+ const struct ata_port_info *ppi[] = { &info, &ata_dummy_port_info };
+
+ return ata_pci_sff_init_one(dev, ppi, &sc1200_sht, NULL);
}
-static struct pci_device_id sc1200[] = {
- { PCI_DEVICE(PCI_VENDOR_ID_NS, PCI_DEVICE_ID_NS_SCx200_IDE), },
- { 0, },
+static const struct pci_device_id sc1200[] = {
+ { PCI_VDEVICE(NS, PCI_DEVICE_ID_NS_SCx200_IDE), },
+
+ { },
};
static struct pci_driver sc1200_pci_driver = {
- .name = DRV_NAME,
+ .name = DRV_NAME,
.id_table = sc1200,
.probe = sc1200_init_one,
- .remove = ata_pci_remove_one
+ .remove = ata_pci_remove_one,
+#ifdef CONFIG_PM
+ .suspend = ata_pci_device_suspend,
+ .resume = ata_pci_device_resume,
+#endif
};
static int __init sc1200_init(void)
return pci_register_driver(&sc1200_pci_driver);
}
-
static void __exit sc1200_exit(void)
{
pci_unregister_driver(&sc1200_pci_driver);
}
-
MODULE_AUTHOR("Alan Cox, Mark Lord");
MODULE_DESCRIPTION("low-level driver for the NS/AMD SC1200");
MODULE_LICENSE("GPL");