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kernel_samsung_sm7125/drivers/ata/pata_amd.c

723 lines
19 KiB

/*
* pata_amd.c - AMD PATA for new ATA layer
* (C) 2005-2006 Red Hat Inc
* Alan Cox <alan@redhat.com>
*
* Based on pata-sil680. Errata information is taken from data sheets
* and the amd74xx.c driver by Vojtech Pavlik. Nvidia SATA devices are
* claimed by sata-nv.c.
*
* TODO:
* Variable system clock when/if it makes sense
* Power management on ports
*
*
* Documentation publically available.
*/
#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_amd"
#define DRV_VERSION "0.3.9"
/**
* timing_setup - shared timing computation and load
* @ap: ATA port being set up
* @adev: drive being configured
* @offset: port offset
* @speed: target speed
* @clock: clock multiplier (number of times 33MHz for this part)
*
* Perform the actual timing set up for Nvidia or AMD PATA devices.
* The actual devices vary so they all call into this helper function
* providing the clock multipler and offset (because AMD and Nvidia put
* the ports at different locations).
*/
static void timing_setup(struct ata_port *ap, struct ata_device *adev, int offset, int speed, int clock)
{
static const unsigned char amd_cyc2udma[] = {
6, 6, 5, 4, 0, 1, 1, 2, 2, 3, 3, 3, 3, 3, 3, 7
};
struct pci_dev *pdev = to_pci_dev(ap->host->dev);
struct ata_device *peer = ata_dev_pair(adev);
int dn = ap->port_no * 2 + adev->devno;
struct ata_timing at, apeer;
int T, UT;
const int amd_clock = 33333; /* KHz. */
u8 t;
T = 1000000000 / amd_clock;
UT = T / min_t(int, max_t(int, clock, 1), 2);
if (ata_timing_compute(adev, speed, &at, T, UT) < 0) {
dev_printk(KERN_ERR, &pdev->dev, "unknown mode %d.\n", speed);
return;
}
if (peer) {
/* This may be over conservative */
if (peer->dma_mode) {
ata_timing_compute(peer, peer->dma_mode, &apeer, T, UT);
ata_timing_merge(&apeer, &at, &at, ATA_TIMING_8BIT);
}
ata_timing_compute(peer, peer->pio_mode, &apeer, T, UT);
ata_timing_merge(&apeer, &at, &at, ATA_TIMING_8BIT);
}
if (speed == XFER_UDMA_5 && amd_clock <= 33333) at.udma = 1;
if (speed == XFER_UDMA_6 && amd_clock <= 33333) at.udma = 15;
/*
* Now do the setup work
*/
/* Configure the address set up timing */
pci_read_config_byte(pdev, offset + 0x0C, &t);
t = (t & ~(3 << ((3 - dn) << 1))) | ((FIT(at.setup, 1, 4) - 1) << ((3 - dn) << 1));
pci_write_config_byte(pdev, offset + 0x0C , t);
/* Configure the 8bit I/O timing */
pci_write_config_byte(pdev, offset + 0x0E + (1 - (dn >> 1)),
((FIT(at.act8b, 1, 16) - 1) << 4) | (FIT(at.rec8b, 1, 16) - 1));
/* Drive timing */
pci_write_config_byte(pdev, offset + 0x08 + (3 - dn),
((FIT(at.active, 1, 16) - 1) << 4) | (FIT(at.recover, 1, 16) - 1));
switch (clock) {
case 1:
t = at.udma ? (0xc0 | (FIT(at.udma, 2, 5) - 2)) : 0x03;
break;
case 2:
t = at.udma ? (0xc0 | amd_cyc2udma[FIT(at.udma, 2, 10)]) : 0x03;
break;
case 3:
t = at.udma ? (0xc0 | amd_cyc2udma[FIT(at.udma, 1, 10)]) : 0x03;
break;
case 4:
t = at.udma ? (0xc0 | amd_cyc2udma[FIT(at.udma, 1, 15)]) : 0x03;
break;
default:
return;
}
/* UDMA timing */
pci_write_config_byte(pdev, offset + 0x10 + (3 - dn), t);
}
/**
* amd_pre_reset - perform reset handling
* @link: ATA link
libata: add deadline support to prereset and reset methods Add @deadline to prereset and reset methods and make them honor it. ata_wait_ready() which directly takes @deadline is implemented to be used as the wait function. This patch is in preparation for EH timing improvements. * ata_wait_ready() never does busy sleep. It's only used from EH and no wait in EH is that urgent. This function also prints 'be patient' message automatically after 5 secs of waiting if more than 3 secs is remaining till deadline. * ata_bus_post_reset() now fails with error code if any of its wait fails. This is important because earlier reset tries will have shorter timeout than the spec requires. If a device fails to respond before the short timeout, reset should be retried with longer timeout rather than silently ignoring the device. There are three behavior differences. 1. Timeout is applied to both devices at once, not separately. This is more consistent with what the spec says. 2. When a device passes devchk but fails to become ready before deadline. Previouly, post_reset would just succeed and let device classification remove the device. New code fails the reset thus causing reset retry. After a few times, EH will give up disabling the port. 3. When slave device passes devchk but fails to become accessible (TF-wise) after reset. Original code disables dev1 after 30s timeout and continues as if the device doesn't exist, while the patched code fails reset. When this happens, new code fails reset on whole port rather than proceeding with only the primary device. If the failing device is suffering transient problems, new code retries reset which is a better behavior. If the failing device is actually broken, the net effect is identical to it, but not to the other device sharing the channel. In the previous code, reset would have succeeded after 30s thus detecting the working one. In the new code, reset fails and whole port gets disabled. IMO, it's a pathological case anyway (broken device sharing bus with working one) and doesn't really matter. * ata_bus_softreset() is changed to return error code from ata_bus_post_reset(). It used to return 0 unconditionally. * Spin up waiting is to be removed and not converted to honor deadline. * To be on the safe side, deadline is set to 40s for the time being. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
18 years ago
* @deadline: deadline jiffies for the operation
*
* Reset sequence checking enable bits to see which ports are
* active.
*/
static int amd_pre_reset(struct ata_link *link, unsigned long deadline)
{
static const struct pci_bits amd_enable_bits[] = {
{ 0x40, 1, 0x02, 0x02 },
{ 0x40, 1, 0x01, 0x01 }
};
struct ata_port *ap = link->ap;
struct pci_dev *pdev = to_pci_dev(ap->host->dev);
if (!pci_test_config_bits(pdev, &amd_enable_bits[ap->port_no]))
return -ENOENT;
return ata_std_prereset(link, deadline);
}
static void amd_error_handler(struct ata_port *ap)
{
return ata_bmdma_drive_eh(ap, amd_pre_reset,
ata_std_softreset, NULL,
ata_std_postreset);
}
static int amd_cable_detect(struct ata_port *ap)
{
static const u32 bitmask[2] = {0x03, 0x0C};
struct pci_dev *pdev = to_pci_dev(ap->host->dev);
u8 ata66;
pci_read_config_byte(pdev, 0x42, &ata66);
if (ata66 & bitmask[ap->port_no])
return ATA_CBL_PATA80;
return ATA_CBL_PATA40;
}
/**
* amd33_set_piomode - set initial PIO mode data
* @ap: ATA interface
* @adev: ATA device
*
* Program the AMD registers for PIO mode.
*/
static void amd33_set_piomode(struct ata_port *ap, struct ata_device *adev)
{
timing_setup(ap, adev, 0x40, adev->pio_mode, 1);
}
static void amd66_set_piomode(struct ata_port *ap, struct ata_device *adev)
{
timing_setup(ap, adev, 0x40, adev->pio_mode, 2);
}
static void amd100_set_piomode(struct ata_port *ap, struct ata_device *adev)
{
timing_setup(ap, adev, 0x40, adev->pio_mode, 3);
}
static void amd133_set_piomode(struct ata_port *ap, struct ata_device *adev)
{
timing_setup(ap, adev, 0x40, adev->pio_mode, 4);
}
/**
* amd33_set_dmamode - set initial DMA mode data
* @ap: ATA interface
* @adev: ATA device
*
* Program the MWDMA/UDMA modes for the AMD and Nvidia
* chipset.
*/
static void amd33_set_dmamode(struct ata_port *ap, struct ata_device *adev)
{
timing_setup(ap, adev, 0x40, adev->dma_mode, 1);
}
static void amd66_set_dmamode(struct ata_port *ap, struct ata_device *adev)
{
timing_setup(ap, adev, 0x40, adev->dma_mode, 2);
}
static void amd100_set_dmamode(struct ata_port *ap, struct ata_device *adev)
{
timing_setup(ap, adev, 0x40, adev->dma_mode, 3);
}
static void amd133_set_dmamode(struct ata_port *ap, struct ata_device *adev)
{
timing_setup(ap, adev, 0x40, adev->dma_mode, 4);
}
/**
* nv_probe_init - cable detection
* @lin: ATA link
*
* Perform cable detection. The BIOS stores this in PCI config
* space for us.
*/
static int nv_pre_reset(struct ata_link *link, unsigned long deadline)
libata: add deadline support to prereset and reset methods Add @deadline to prereset and reset methods and make them honor it. ata_wait_ready() which directly takes @deadline is implemented to be used as the wait function. This patch is in preparation for EH timing improvements. * ata_wait_ready() never does busy sleep. It's only used from EH and no wait in EH is that urgent. This function also prints 'be patient' message automatically after 5 secs of waiting if more than 3 secs is remaining till deadline. * ata_bus_post_reset() now fails with error code if any of its wait fails. This is important because earlier reset tries will have shorter timeout than the spec requires. If a device fails to respond before the short timeout, reset should be retried with longer timeout rather than silently ignoring the device. There are three behavior differences. 1. Timeout is applied to both devices at once, not separately. This is more consistent with what the spec says. 2. When a device passes devchk but fails to become ready before deadline. Previouly, post_reset would just succeed and let device classification remove the device. New code fails the reset thus causing reset retry. After a few times, EH will give up disabling the port. 3. When slave device passes devchk but fails to become accessible (TF-wise) after reset. Original code disables dev1 after 30s timeout and continues as if the device doesn't exist, while the patched code fails reset. When this happens, new code fails reset on whole port rather than proceeding with only the primary device. If the failing device is suffering transient problems, new code retries reset which is a better behavior. If the failing device is actually broken, the net effect is identical to it, but not to the other device sharing the channel. In the previous code, reset would have succeeded after 30s thus detecting the working one. In the new code, reset fails and whole port gets disabled. IMO, it's a pathological case anyway (broken device sharing bus with working one) and doesn't really matter. * ata_bus_softreset() is changed to return error code from ata_bus_post_reset(). It used to return 0 unconditionally. * Spin up waiting is to be removed and not converted to honor deadline. * To be on the safe side, deadline is set to 40s for the time being. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
18 years ago
{
static const struct pci_bits nv_enable_bits[] = {
{ 0x50, 1, 0x02, 0x02 },
{ 0x50, 1, 0x01, 0x01 }
};
struct ata_port *ap = link->ap;
struct pci_dev *pdev = to_pci_dev(ap->host->dev);
if (!pci_test_config_bits(pdev, &nv_enable_bits[ap->port_no]))
return -ENOENT;
return ata_std_prereset(link, deadline);
}
static void nv_error_handler(struct ata_port *ap)
{
ata_bmdma_drive_eh(ap, nv_pre_reset,
ata_std_softreset, NULL,
ata_std_postreset);
}
static int nv_cable_detect(struct ata_port *ap)
{
static const u8 bitmask[2] = {0x03, 0x0C};
struct pci_dev *pdev = to_pci_dev(ap->host->dev);
u8 ata66;
u16 udma;
int cbl;
pci_read_config_byte(pdev, 0x52, &ata66);
if (ata66 & bitmask[ap->port_no])
cbl = ATA_CBL_PATA80;
else
cbl = ATA_CBL_PATA40;
/* We now have to double check because the Nvidia boxes BIOS
doesn't always set the cable bits but does set mode bits */
pci_read_config_word(pdev, 0x62 - 2 * ap->port_no, &udma);
if ((udma & 0xC4) == 0xC4 || (udma & 0xC400) == 0xC400)
cbl = ATA_CBL_PATA80;
/* And a triple check across suspend/resume with ACPI around */
if (ata_acpi_cbl_80wire(ap))
cbl = ATA_CBL_PATA80;
return cbl;
}
/**
* nv100_set_piomode - set initial PIO mode data
* @ap: ATA interface
* @adev: ATA device
*
* Program the AMD registers for PIO mode.
*/
static void nv100_set_piomode(struct ata_port *ap, struct ata_device *adev)
{
timing_setup(ap, adev, 0x50, adev->pio_mode, 3);
}
static void nv133_set_piomode(struct ata_port *ap, struct ata_device *adev)
{
timing_setup(ap, adev, 0x50, adev->pio_mode, 4);
}
/**
* nv100_set_dmamode - set initial DMA mode data
* @ap: ATA interface
* @adev: ATA device
*
* Program the MWDMA/UDMA modes for the AMD and Nvidia
* chipset.
*/
static void nv100_set_dmamode(struct ata_port *ap, struct ata_device *adev)
{
timing_setup(ap, adev, 0x50, adev->dma_mode, 3);
}
static void nv133_set_dmamode(struct ata_port *ap, struct ata_device *adev)
{
timing_setup(ap, adev, 0x50, adev->dma_mode, 4);
}
static struct scsi_host_template amd_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,
};
static struct ata_port_operations amd33_port_ops = {
.set_piomode = amd33_set_piomode,
.set_dmamode = amd33_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 = amd_error_handler,
.post_internal_cmd = ata_bmdma_post_internal_cmd,
.cable_detect = ata_cable_40wire,
.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,
.data_xfer = ata_data_xfer,
.irq_handler = ata_interrupt,
.irq_clear = ata_bmdma_irq_clear,
.irq_on = ata_irq_on,
.port_start = ata_sff_port_start,
};
static struct ata_port_operations amd66_port_ops = {
.set_piomode = amd66_set_piomode,
.set_dmamode = amd66_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 = amd_error_handler,
.post_internal_cmd = ata_bmdma_post_internal_cmd,
.cable_detect = ata_cable_unknown,
.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,
.data_xfer = ata_data_xfer,
.irq_handler = ata_interrupt,
.irq_clear = ata_bmdma_irq_clear,
.irq_on = ata_irq_on,
.port_start = ata_sff_port_start,
};
static struct ata_port_operations amd100_port_ops = {
.set_piomode = amd100_set_piomode,
.set_dmamode = amd100_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 = amd_error_handler,
.post_internal_cmd = ata_bmdma_post_internal_cmd,
.cable_detect = ata_cable_unknown,
.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,
.data_xfer = ata_data_xfer,
.irq_handler = ata_interrupt,
.irq_clear = ata_bmdma_irq_clear,
.irq_on = ata_irq_on,
.port_start = ata_sff_port_start,
};
static struct ata_port_operations amd133_port_ops = {
.set_piomode = amd133_set_piomode,
.set_dmamode = amd133_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 = amd_error_handler,
.post_internal_cmd = ata_bmdma_post_internal_cmd,
.cable_detect = amd_cable_detect,
.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,
.data_xfer = ata_data_xfer,
.irq_handler = ata_interrupt,
.irq_clear = ata_bmdma_irq_clear,
.irq_on = ata_irq_on,
.port_start = ata_sff_port_start,
};
static struct ata_port_operations nv100_port_ops = {
.set_piomode = nv100_set_piomode,
.set_dmamode = nv100_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 = nv_error_handler,
.post_internal_cmd = ata_bmdma_post_internal_cmd,
.cable_detect = nv_cable_detect,
.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,
.data_xfer = ata_data_xfer,
.irq_handler = ata_interrupt,
.irq_clear = ata_bmdma_irq_clear,
.irq_on = ata_irq_on,
.port_start = ata_sff_port_start,
};
static struct ata_port_operations nv133_port_ops = {
.set_piomode = nv133_set_piomode,
.set_dmamode = nv133_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 = nv_error_handler,
.post_internal_cmd = ata_bmdma_post_internal_cmd,
.cable_detect = nv_cable_detect,
.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,
.data_xfer = ata_data_xfer,
.irq_handler = ata_interrupt,
.irq_clear = ata_bmdma_irq_clear,
.irq_on = ata_irq_on,
.port_start = ata_sff_port_start,
};
static int amd_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
{
libata: clean up SFF init mess The intention of using port_mask in SFF init helpers was to eventually support exoctic configurations such as combination of legacy and native port on the same controller. This never became actually necessary and the related code always has been subtly broken one way or the other. Now that new init model is in place, there is no reason to make common helpers capable of handling all corner cases. Exotic cases can simply dealt within LLDs as necessary. This patch removes port_mask handling in SFF init helpers. SFF init helpers don't take n_ports argument and interpret it into port_mask anymore. All information is carried via port_info. n_ports argument is dropped and always two ports are allocated. LLD can tell SFF to skip certain port by marking it dummy. Note that SFF code has been treating unuvailable ports this way for a long time until recent breakage fix from Linus and is consistent with how other drivers handle with unavailable ports. This fixes 1-port legacy host handling still broken after the recent native mode fix and simplifies SFF init logic. The following changes are made... * ata_pci_init_native_host() and ata_init_legacy_host() both now try to initialized whatever they can and mark failed ports dummy. They return 0 if any port is successfully initialized. * ata_pci_prepare_native_host() and ata_pci_init_one() now doesn't take n_ports argument. All info should be specified via port_info array. Always two ports are allocated. * ata_pci_init_bmdma() exported to be used by LLDs in exotic cases. * port_info handling in all LLDs are standardized - all port_info arrays are const stack variable named ppi. Unless the second port is different from the first, its port_info is specified as NULL (tells libata that it's identical to the last non-NULL port_info). * pata_hpt37x/hpt3x2n: don't modify static variable directly. Make an on-stack copy instead as ata_piix does. * pata_uli: It has 4 ports instead of 2. Don't use ata_pci_prepare_native_host(). Allocate the host explicitly and use init helpers. It's simple enough. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
18 years ago
static const struct ata_port_info info[10] = {
{ /* 0: AMD 7401 */
.sht = &amd_sht,
.flags = ATA_FLAG_SLAVE_POSS,
.pio_mask = 0x1f,
.mwdma_mask = 0x07, /* No SWDMA */
.udma_mask = 0x07, /* UDMA 33 */
.port_ops = &amd33_port_ops
},
{ /* 1: Early AMD7409 - no swdma */
.sht = &amd_sht,
.flags = ATA_FLAG_SLAVE_POSS,
.pio_mask = 0x1f,
.mwdma_mask = 0x07,
.udma_mask = ATA_UDMA4, /* UDMA 66 */
.port_ops = &amd66_port_ops
},
{ /* 2: AMD 7409, no swdma errata */
.sht = &amd_sht,
.flags = ATA_FLAG_SLAVE_POSS,
.pio_mask = 0x1f,
.mwdma_mask = 0x07,
.udma_mask = ATA_UDMA4, /* UDMA 66 */
.port_ops = &amd66_port_ops
},
{ /* 3: AMD 7411 */
.sht = &amd_sht,
.flags = ATA_FLAG_SLAVE_POSS,
.pio_mask = 0x1f,
.mwdma_mask = 0x07,
.udma_mask = ATA_UDMA5, /* UDMA 100 */
.port_ops = &amd100_port_ops
},
{ /* 4: AMD 7441 */
.sht = &amd_sht,
.flags = ATA_FLAG_SLAVE_POSS,
.pio_mask = 0x1f,
.mwdma_mask = 0x07,
.udma_mask = ATA_UDMA5, /* UDMA 100 */
.port_ops = &amd100_port_ops
},
{ /* 5: AMD 8111*/
.sht = &amd_sht,
.flags = ATA_FLAG_SLAVE_POSS,
.pio_mask = 0x1f,
.mwdma_mask = 0x07,
.udma_mask = ATA_UDMA6, /* UDMA 133, no swdma */
.port_ops = &amd133_port_ops
},
{ /* 6: AMD 8111 UDMA 100 (Serenade) */
.sht = &amd_sht,
.flags = ATA_FLAG_SLAVE_POSS,
.pio_mask = 0x1f,
.mwdma_mask = 0x07,
.udma_mask = ATA_UDMA5, /* UDMA 100, no swdma */
.port_ops = &amd133_port_ops
},
{ /* 7: Nvidia Nforce */
.sht = &amd_sht,
.flags = ATA_FLAG_SLAVE_POSS,
.pio_mask = 0x1f,
.mwdma_mask = 0x07,
.udma_mask = ATA_UDMA5, /* UDMA 100 */
.port_ops = &nv100_port_ops
},
{ /* 8: Nvidia Nforce2 and later */
.sht = &amd_sht,
.flags = ATA_FLAG_SLAVE_POSS,
.pio_mask = 0x1f,
.mwdma_mask = 0x07,
.udma_mask = ATA_UDMA6, /* UDMA 133, no swdma */
.port_ops = &nv133_port_ops
},
{ /* 9: AMD CS5536 (Geode companion) */
.sht = &amd_sht,
.flags = ATA_FLAG_SLAVE_POSS,
.pio_mask = 0x1f,
.mwdma_mask = 0x07,
.udma_mask = ATA_UDMA5, /* UDMA 100 */
.port_ops = &amd100_port_ops
}
};
libata: clean up SFF init mess The intention of using port_mask in SFF init helpers was to eventually support exoctic configurations such as combination of legacy and native port on the same controller. This never became actually necessary and the related code always has been subtly broken one way or the other. Now that new init model is in place, there is no reason to make common helpers capable of handling all corner cases. Exotic cases can simply dealt within LLDs as necessary. This patch removes port_mask handling in SFF init helpers. SFF init helpers don't take n_ports argument and interpret it into port_mask anymore. All information is carried via port_info. n_ports argument is dropped and always two ports are allocated. LLD can tell SFF to skip certain port by marking it dummy. Note that SFF code has been treating unuvailable ports this way for a long time until recent breakage fix from Linus and is consistent with how other drivers handle with unavailable ports. This fixes 1-port legacy host handling still broken after the recent native mode fix and simplifies SFF init logic. The following changes are made... * ata_pci_init_native_host() and ata_init_legacy_host() both now try to initialized whatever they can and mark failed ports dummy. They return 0 if any port is successfully initialized. * ata_pci_prepare_native_host() and ata_pci_init_one() now doesn't take n_ports argument. All info should be specified via port_info array. Always two ports are allocated. * ata_pci_init_bmdma() exported to be used by LLDs in exotic cases. * port_info handling in all LLDs are standardized - all port_info arrays are const stack variable named ppi. Unless the second port is different from the first, its port_info is specified as NULL (tells libata that it's identical to the last non-NULL port_info). * pata_hpt37x/hpt3x2n: don't modify static variable directly. Make an on-stack copy instead as ata_piix does. * pata_uli: It has 4 ports instead of 2. Don't use ata_pci_prepare_native_host(). Allocate the host explicitly and use init helpers. It's simple enough. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
18 years ago
const struct ata_port_info *ppi[] = { NULL, NULL };
static int printed_version;
int type = id->driver_data;
u8 fifo;
if (!printed_version++)
dev_printk(KERN_DEBUG, &pdev->dev, "version " DRV_VERSION "\n");
pci_read_config_byte(pdev, 0x41, &fifo);
/* Check for AMD7409 without swdma errata and if found adjust type */
if (type == 1 && pdev->revision > 0x7)
type = 2;
/* Check for AMD7411 */
if (type == 3)
/* FIFO is broken */
pci_write_config_byte(pdev, 0x41, fifo & 0x0F);
else
pci_write_config_byte(pdev, 0x41, fifo | 0xF0);
/* Serenade ? */
if (type == 5 && pdev->subsystem_vendor == PCI_VENDOR_ID_AMD &&
pdev->subsystem_device == PCI_DEVICE_ID_AMD_SERENADE)
type = 6; /* UDMA 100 only */
if (type < 3)
ata_pci_clear_simplex(pdev);
/* And fire it up */
libata: clean up SFF init mess The intention of using port_mask in SFF init helpers was to eventually support exoctic configurations such as combination of legacy and native port on the same controller. This never became actually necessary and the related code always has been subtly broken one way or the other. Now that new init model is in place, there is no reason to make common helpers capable of handling all corner cases. Exotic cases can simply dealt within LLDs as necessary. This patch removes port_mask handling in SFF init helpers. SFF init helpers don't take n_ports argument and interpret it into port_mask anymore. All information is carried via port_info. n_ports argument is dropped and always two ports are allocated. LLD can tell SFF to skip certain port by marking it dummy. Note that SFF code has been treating unuvailable ports this way for a long time until recent breakage fix from Linus and is consistent with how other drivers handle with unavailable ports. This fixes 1-port legacy host handling still broken after the recent native mode fix and simplifies SFF init logic. The following changes are made... * ata_pci_init_native_host() and ata_init_legacy_host() both now try to initialized whatever they can and mark failed ports dummy. They return 0 if any port is successfully initialized. * ata_pci_prepare_native_host() and ata_pci_init_one() now doesn't take n_ports argument. All info should be specified via port_info array. Always two ports are allocated. * ata_pci_init_bmdma() exported to be used by LLDs in exotic cases. * port_info handling in all LLDs are standardized - all port_info arrays are const stack variable named ppi. Unless the second port is different from the first, its port_info is specified as NULL (tells libata that it's identical to the last non-NULL port_info). * pata_hpt37x/hpt3x2n: don't modify static variable directly. Make an on-stack copy instead as ata_piix does. * pata_uli: It has 4 ports instead of 2. Don't use ata_pci_prepare_native_host(). Allocate the host explicitly and use init helpers. It's simple enough. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
18 years ago
ppi[0] = &info[type];
return ata_pci_init_one(pdev, ppi);
}
#ifdef CONFIG_PM
static int amd_reinit_one(struct pci_dev *pdev)
{
if (pdev->vendor == PCI_VENDOR_ID_AMD) {
u8 fifo;
pci_read_config_byte(pdev, 0x41, &fifo);
if (pdev->device == PCI_DEVICE_ID_AMD_VIPER_7411)
/* FIFO is broken */
pci_write_config_byte(pdev, 0x41, fifo & 0x0F);
else
pci_write_config_byte(pdev, 0x41, fifo | 0xF0);
if (pdev->device == PCI_DEVICE_ID_AMD_VIPER_7409 ||
pdev->device == PCI_DEVICE_ID_AMD_COBRA_7401)
ata_pci_clear_simplex(pdev);
}
return ata_pci_device_resume(pdev);
}
#endif
static const struct pci_device_id amd[] = {
{ PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_COBRA_7401), 0 },
{ PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_VIPER_7409), 1 },
{ PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_VIPER_7411), 3 },
{ PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_OPUS_7441), 4 },
{ PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_8111_IDE), 5 },
{ PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_IDE), 7 },
{ PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE2_IDE), 8 },
{ PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE2S_IDE), 8 },
{ PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE3_IDE), 8 },
{ PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE3S_IDE), 8 },
{ PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_CK804_IDE), 8 },
{ PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP04_IDE), 8 },
{ PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP51_IDE), 8 },
{ PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP55_IDE), 8 },
{ PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP61_IDE), 8 },
{ PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP65_IDE), 8 },
{ PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP67_IDE), 8 },
{ PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP73_IDE), 8 },
{ PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP77_IDE), 8 },
{ PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_CS5536_IDE), 9 },
{ },
};
static struct pci_driver amd_pci_driver = {
.name = DRV_NAME,
.id_table = amd,
.probe = amd_init_one,
.remove = ata_pci_remove_one,
#ifdef CONFIG_PM
.suspend = ata_pci_device_suspend,
.resume = amd_reinit_one,
#endif
};
static int __init amd_init(void)
{
return pci_register_driver(&amd_pci_driver);
}
static void __exit amd_exit(void)
{
pci_unregister_driver(&amd_pci_driver);
}
MODULE_AUTHOR("Alan Cox");
MODULE_DESCRIPTION("low-level driver for AMD PATA IDE");
MODULE_LICENSE("GPL");
MODULE_DEVICE_TABLE(pci, amd);
MODULE_VERSION(DRV_VERSION);
module_init(amd_init);
module_exit(amd_exit);