/*
* pata_winbond.c - Winbond VLB ATA controllers
- * (C) 2006 Red Hat <alan@redhat.com>
+ * (C) 2006 Red Hat
*
* Support for the Winbond 83759A when operating in advanced mode.
* Multichip mode is not currently supported.
*/
-
+
#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/platform_device.h>
#define DRV_NAME "pata_winbond"
-#define DRV_VERSION "0.0.1"
+#define DRV_VERSION "0.0.3"
#define NR_HOST 4 /* Two winbond controllers, two channels each */
static int probe_winbond;
#endif
-static spinlock_t winbond_lock = SPIN_LOCK_UNLOCKED;
+static DEFINE_SPINLOCK(winbond_lock);
static void winbond_writecfg(unsigned long port, u8 reg, u8 val)
{
int timing = 0x88 + (ap->port_no * 4) + (adev->devno * 2);
reg = winbond_readcfg(winbond->config, 0x81);
-
+
/* Get the timing data in cycles */
if (reg & 0x40) /* Fast VLB bus, assume 50MHz */
ata_timing_compute(adev, adev->pio_mode, &t, 20000, 1000);
else
ata_timing_compute(adev, adev->pio_mode, &t, 30303, 1000);
- active = (FIT(t.active, 3, 17) - 1) & 0x0F;
- recovery = (FIT(t.recover, 1, 15) + 1) & 0x0F;
+ active = (clamp_val(t.active, 3, 17) - 1) & 0x0F;
+ recovery = (clamp_val(t.recover, 1, 15) + 1) & 0x0F;
timing = (active << 4) | recovery;
winbond_writecfg(winbond->config, timing, reg);
-
+
/* Load the setup timing */
-
+
reg = 0x35;
if (adev->class != ATA_DEV_ATA)
reg |= 0x08; /* FIFO off */
if (!ata_pio_need_iordy(adev))
reg |= 0x02; /* IORDY off */
- reg |= (FIT(t.setup, 0, 3) << 6);
+ reg |= (clamp_val(t.setup, 0, 3) << 6);
winbond_writecfg(winbond->config, timing + 1, reg);
}
-static void winbond_data_xfer(struct ata_device *adev, unsigned char *buf, unsigned int buflen, int write_data)
+static unsigned int winbond_data_xfer(struct ata_device *dev,
+ unsigned char *buf, unsigned int buflen, int rw)
{
- struct ata_port *ap = adev->ap;
+ struct ata_port *ap = dev->link->ap;
int slop = buflen & 3;
- if (ata_id_has_dword_io(adev->id)) {
- if (write_data)
- outsl(ap->ioaddr.data_addr, buf, buflen >> 2);
+ if (ata_id_has_dword_io(dev->id)) {
+ if (rw == READ)
+ ioread32_rep(ap->ioaddr.data_addr, buf, buflen >> 2);
else
- insl(ap->ioaddr.data_addr, buf, buflen >> 2);
+ iowrite32_rep(ap->ioaddr.data_addr, buf, buflen >> 2);
if (unlikely(slop)) {
- u32 pad;
- if (write_data) {
- memcpy(&pad, buf + buflen - slop, slop);
- outl(le32_to_cpu(pad), ap->ioaddr.data_addr);
- } else {
- pad = cpu_to_le16(inl(ap->ioaddr.data_addr));
+ __le32 pad;
+ if (rw == READ) {
+ pad = cpu_to_le32(ioread32(ap->ioaddr.data_addr));
memcpy(buf + buflen - slop, &pad, slop);
+ } else {
+ memcpy(&pad, buf + buflen - slop, slop);
+ iowrite32(le32_to_cpu(pad), ap->ioaddr.data_addr);
}
+ buflen += 4 - slop;
}
} else
- ata_pio_data_xfer(adev, buf, buflen, write_data);
+ buflen = ata_sff_data_xfer(dev, buf, buflen, rw);
+
+ return buflen;
}
static struct scsi_host_template winbond_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,
- .bios_param = ata_std_bios_param,
+ ATA_PIO_SHT(DRV_NAME),
};
static struct ata_port_operations winbond_port_ops = {
- .port_disable = ata_port_disable,
+ .inherits = &ata_sff_port_ops,
+ .sff_data_xfer = winbond_data_xfer,
+ .cable_detect = ata_cable_40wire,
.set_piomode = winbond_set_piomode,
-
- .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 = ata_bmdma_error_handler,
- .post_internal_cmd = ata_bmdma_post_internal_cmd,
-
- .qc_prep = ata_qc_prep,
- .qc_issue = ata_qc_issue_prot,
-
- .data_xfer = winbond_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
};
/**
static __init int winbond_init_one(unsigned long port)
{
- struct ata_probe_ent ae;
struct platform_device *pdev;
- int ret;
u8 reg;
- int i;
+ int i, rc;
reg = winbond_readcfg(port, 0x81);
reg |= 0x80; /* jumpered mode off */
winbond_writecfg(port, 0x85, reg);
reg = winbond_readcfg(port, 0x81);
-
+
if (!(reg & 0x03)) /* Disabled */
- return 0;
+ return -ENODEV;
for (i = 0; i < 2 ; i ++) {
-
- if (reg & (1 << i)) {
- /*
- * Fill in a probe structure first of all
- */
-
- pdev = platform_device_register_simple(DRV_NAME, nr_winbond_host, NULL, 0);
- if (pdev == NULL)
- return -ENOMEM;
-
- memset(&ae, 0, sizeof(struct ata_probe_ent));
- INIT_LIST_HEAD(&ae.node);
- ae.dev = &pdev->dev;
-
- ae.port_ops = &winbond_port_ops;
- ae.pio_mask = 0x1F;
-
- ae.sht = &winbond_sht;
-
- ae.n_ports = 1;
- ae.irq = 14 + i;
- ae.irq_flags = 0;
- ae.port_flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST;
- ae.port[0].cmd_addr = 0x1F0 - (0x80 * i);
- ae.port[0].altstatus_addr = ae.port[0].cmd_addr + 0x0206;
- ae.port[0].ctl_addr = ae.port[0].altstatus_addr;
- ata_std_ports(&ae.port[0]);
- /*
- * Hook in a private data structure per channel
- */
- ae.private_data = &winbond_data[nr_winbond_host];
- winbond_data[nr_winbond_host].config = port;
- winbond_data[nr_winbond_host].platform_dev = pdev;
-
- ret = ata_device_add(&ae);
- if (ret == 0) {
- platform_device_unregister(pdev);
- return -ENODEV;
- }
- winbond_host[nr_winbond_host++] = dev_get_drvdata(&pdev->dev);
- }
+ unsigned long cmd_port = 0x1F0 - (0x80 * i);
+ unsigned long ctl_port = cmd_port + 0x206;
+ struct ata_host *host;
+ struct ata_port *ap;
+ void __iomem *cmd_addr, *ctl_addr;
+
+ if (!(reg & (1 << i)))
+ continue;
+
+ pdev = platform_device_register_simple(DRV_NAME, nr_winbond_host, NULL, 0);
+ if (IS_ERR(pdev))
+ return PTR_ERR(pdev);
+
+ rc = -ENOMEM;
+ host = ata_host_alloc(&pdev->dev, 1);
+ if (!host)
+ goto err_unregister;
+ ap = host->ports[0];
+
+ rc = -ENOMEM;
+ cmd_addr = devm_ioport_map(&pdev->dev, cmd_port, 8);
+ ctl_addr = devm_ioport_map(&pdev->dev, ctl_port, 1);
+ if (!cmd_addr || !ctl_addr)
+ goto err_unregister;
+
+ ata_port_desc(ap, "cmd 0x%lx ctl 0x%lx", cmd_port, ctl_port);
+
+ ap->ops = &winbond_port_ops;
+ ap->pio_mask = ATA_PIO4;
+ ap->flags |= ATA_FLAG_SLAVE_POSS;
+ ap->ioaddr.cmd_addr = cmd_addr;
+ ap->ioaddr.altstatus_addr = ctl_addr;
+ ap->ioaddr.ctl_addr = ctl_addr;
+ ata_sff_std_ports(&ap->ioaddr);
+
+ /* hook in a private data structure per channel */
+ host->private_data = &winbond_data[nr_winbond_host];
+ winbond_data[nr_winbond_host].config = port;
+ winbond_data[nr_winbond_host].platform_dev = pdev;
+
+ /* activate */
+ rc = ata_host_activate(host, 14 + i, ata_sff_interrupt, 0,
+ &winbond_sht);
+ if (rc)
+ goto err_unregister;
+
+ winbond_host[nr_winbond_host++] = dev_get_drvdata(&pdev->dev);
}
return 0;
+
+ err_unregister:
+ platform_device_unregister(pdev);
+ return rc;
}
/**
int ct = 0;
int i;
-
+
if (probe_winbond == 0)
return -ENODEV;
if (request_region(port, 2, "pata_winbond")) {
ret = winbond_init_one(port);
- if(ret <= 0)
+ if (ret <= 0)
release_region(port, 2);
else ct+= ret;
}
int i;
for (i = 0; i < nr_winbond_host; i++) {
- ata_host_remove(winbond_host[i]);
+ ata_host_detach(winbond_host[i]);
release_region(winbond_data[i].config, 2);
platform_device_unregister(winbond_data[i].platform_dev);
}
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff