mirror of https://gitee.com/openkylin/linux.git
[ARM] Add support for ICSIDE interface on RiscPC
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Russell King
Russell King
parent
a17dba8df9
commit
73b6a2be8b
|
|
@ -552,6 +552,14 @@ config PATA_PLATFORM
|
|||
|
||||
If unsure, say N.
|
||||
|
||||
config PATA_ICSIDE
|
||||
tristate "Acorn ICS PATA support"
|
||||
depends on ARM && ARCH_ACORN
|
||||
help
|
||||
On Acorn systems, say Y here if you wish to use the ICS PATA
|
||||
interface card. This is not required for ICS partition support.
|
||||
If you are unsure, say N to this.
|
||||
|
||||
config PATA_IXP4XX_CF
|
||||
tristate "IXP4XX Compact Flash support"
|
||||
depends on ARCH_IXP4XX
|
||||
|
|
|
|||
|
|
@ -61,6 +61,7 @@ obj-$(CONFIG_PATA_TRIFLEX) += pata_triflex.o
|
|||
obj-$(CONFIG_PATA_IXP4XX_CF) += pata_ixp4xx_cf.o
|
||||
obj-$(CONFIG_PATA_SCC) += pata_scc.o
|
||||
obj-$(CONFIG_PATA_PLATFORM) += pata_platform.o
|
||||
obj-$(CONFIG_PATA_ICSIDE) += pata_icside.o
|
||||
# Should be last but one libata driver
|
||||
obj-$(CONFIG_ATA_GENERIC) += ata_generic.o
|
||||
# Should be last libata driver
|
||||
|
|
|
|||
|
|
@ -0,0 +1,686 @@
|
|||
#include <linux/kernel.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/init.h>
|
||||
#include <linux/blkdev.h>
|
||||
#include <scsi/scsi_host.h>
|
||||
#include <linux/ata.h>
|
||||
#include <linux/libata.h>
|
||||
|
||||
#include <asm/dma.h>
|
||||
#include <asm/ecard.h>
|
||||
|
||||
#define DRV_NAME "pata_icside"
|
||||
|
||||
#define ICS_IDENT_OFFSET 0x2280
|
||||
|
||||
#define ICS_ARCIN_V5_INTRSTAT 0x0000
|
||||
#define ICS_ARCIN_V5_INTROFFSET 0x0004
|
||||
|
||||
#define ICS_ARCIN_V6_INTROFFSET_1 0x2200
|
||||
#define ICS_ARCIN_V6_INTRSTAT_1 0x2290
|
||||
#define ICS_ARCIN_V6_INTROFFSET_2 0x3200
|
||||
#define ICS_ARCIN_V6_INTRSTAT_2 0x3290
|
||||
|
||||
struct portinfo {
|
||||
unsigned int dataoffset;
|
||||
unsigned int ctrloffset;
|
||||
unsigned int stepping;
|
||||
};
|
||||
|
||||
static const struct portinfo pata_icside_portinfo_v5 = {
|
||||
.dataoffset = 0x2800,
|
||||
.ctrloffset = 0x2b80,
|
||||
.stepping = 6,
|
||||
};
|
||||
|
||||
static const struct portinfo pata_icside_portinfo_v6_1 = {
|
||||
.dataoffset = 0x2000,
|
||||
.ctrloffset = 0x2380,
|
||||
.stepping = 6,
|
||||
};
|
||||
|
||||
static const struct portinfo pata_icside_portinfo_v6_2 = {
|
||||
.dataoffset = 0x3000,
|
||||
.ctrloffset = 0x3380,
|
||||
.stepping = 6,
|
||||
};
|
||||
|
||||
#define PATA_ICSIDE_MAX_SG 128
|
||||
|
||||
struct pata_icside_state {
|
||||
void __iomem *irq_port;
|
||||
void __iomem *ioc_base;
|
||||
unsigned int type;
|
||||
unsigned int dma;
|
||||
struct {
|
||||
u8 port_sel;
|
||||
u8 disabled;
|
||||
unsigned int speed[ATA_MAX_DEVICES];
|
||||
} port[2];
|
||||
struct scatterlist sg[PATA_ICSIDE_MAX_SG];
|
||||
};
|
||||
|
||||
#define ICS_TYPE_A3IN 0
|
||||
#define ICS_TYPE_A3USER 1
|
||||
#define ICS_TYPE_V6 3
|
||||
#define ICS_TYPE_V5 15
|
||||
#define ICS_TYPE_NOTYPE ((unsigned int)-1)
|
||||
|
||||
/* ---------------- Version 5 PCB Support Functions --------------------- */
|
||||
/* Prototype: pata_icside_irqenable_arcin_v5 (struct expansion_card *ec, int irqnr)
|
||||
* Purpose : enable interrupts from card
|
||||
*/
|
||||
static void pata_icside_irqenable_arcin_v5 (struct expansion_card *ec, int irqnr)
|
||||
{
|
||||
struct pata_icside_state *state = ec->irq_data;
|
||||
|
||||
writeb(0, state->irq_port + ICS_ARCIN_V5_INTROFFSET);
|
||||
}
|
||||
|
||||
/* Prototype: pata_icside_irqdisable_arcin_v5 (struct expansion_card *ec, int irqnr)
|
||||
* Purpose : disable interrupts from card
|
||||
*/
|
||||
static void pata_icside_irqdisable_arcin_v5 (struct expansion_card *ec, int irqnr)
|
||||
{
|
||||
struct pata_icside_state *state = ec->irq_data;
|
||||
|
||||
readb(state->irq_port + ICS_ARCIN_V5_INTROFFSET);
|
||||
}
|
||||
|
||||
static const expansioncard_ops_t pata_icside_ops_arcin_v5 = {
|
||||
.irqenable = pata_icside_irqenable_arcin_v5,
|
||||
.irqdisable = pata_icside_irqdisable_arcin_v5,
|
||||
};
|
||||
|
||||
|
||||
/* ---------------- Version 6 PCB Support Functions --------------------- */
|
||||
/* Prototype: pata_icside_irqenable_arcin_v6 (struct expansion_card *ec, int irqnr)
|
||||
* Purpose : enable interrupts from card
|
||||
*/
|
||||
static void pata_icside_irqenable_arcin_v6 (struct expansion_card *ec, int irqnr)
|
||||
{
|
||||
struct pata_icside_state *state = ec->irq_data;
|
||||
void __iomem *base = state->irq_port;
|
||||
|
||||
if (!state->port[0].disabled)
|
||||
writeb(0, base + ICS_ARCIN_V6_INTROFFSET_1);
|
||||
if (!state->port[1].disabled)
|
||||
writeb(0, base + ICS_ARCIN_V6_INTROFFSET_2);
|
||||
}
|
||||
|
||||
/* Prototype: pata_icside_irqdisable_arcin_v6 (struct expansion_card *ec, int irqnr)
|
||||
* Purpose : disable interrupts from card
|
||||
*/
|
||||
static void pata_icside_irqdisable_arcin_v6 (struct expansion_card *ec, int irqnr)
|
||||
{
|
||||
struct pata_icside_state *state = ec->irq_data;
|
||||
|
||||
readb(state->irq_port + ICS_ARCIN_V6_INTROFFSET_1);
|
||||
readb(state->irq_port + ICS_ARCIN_V6_INTROFFSET_2);
|
||||
}
|
||||
|
||||
/* Prototype: pata_icside_irqprobe(struct expansion_card *ec)
|
||||
* Purpose : detect an active interrupt from card
|
||||
*/
|
||||
static int pata_icside_irqpending_arcin_v6(struct expansion_card *ec)
|
||||
{
|
||||
struct pata_icside_state *state = ec->irq_data;
|
||||
|
||||
return readb(state->irq_port + ICS_ARCIN_V6_INTRSTAT_1) & 1 ||
|
||||
readb(state->irq_port + ICS_ARCIN_V6_INTRSTAT_2) & 1;
|
||||
}
|
||||
|
||||
static const expansioncard_ops_t pata_icside_ops_arcin_v6 = {
|
||||
.irqenable = pata_icside_irqenable_arcin_v6,
|
||||
.irqdisable = pata_icside_irqdisable_arcin_v6,
|
||||
.irqpending = pata_icside_irqpending_arcin_v6,
|
||||
};
|
||||
|
||||
|
||||
/*
|
||||
* SG-DMA support.
|
||||
*
|
||||
* Similar to the BM-DMA, but we use the RiscPCs IOMD DMA controllers.
|
||||
* There is only one DMA controller per card, which means that only
|
||||
* one drive can be accessed at one time. NOTE! We do not enforce that
|
||||
* here, but we rely on the main IDE driver spotting that both
|
||||
* interfaces use the same IRQ, which should guarantee this.
|
||||
*/
|
||||
|
||||
/*
|
||||
* Configure the IOMD to give the appropriate timings for the transfer
|
||||
* mode being requested. We take the advice of the ATA standards, and
|
||||
* calculate the cycle time based on the transfer mode, and the EIDE
|
||||
* MW DMA specs that the drive provides in the IDENTIFY command.
|
||||
*
|
||||
* We have the following IOMD DMA modes to choose from:
|
||||
*
|
||||
* Type Active Recovery Cycle
|
||||
* A 250 (250) 312 (550) 562 (800)
|
||||
* B 187 (200) 250 (550) 437 (750)
|
||||
* C 125 (125) 125 (375) 250 (500)
|
||||
* D 62 (50) 125 (375) 187 (425)
|
||||
*
|
||||
* (figures in brackets are actual measured timings on DIOR/DIOW)
|
||||
*
|
||||
* However, we also need to take care of the read/write active and
|
||||
* recovery timings:
|
||||
*
|
||||
* Read Write
|
||||
* Mode Active -- Recovery -- Cycle IOMD type
|
||||
* MW0 215 50 215 480 A
|
||||
* MW1 80 50 50 150 C
|
||||
* MW2 70 25 25 120 C
|
||||
*/
|
||||
static void pata_icside_set_dmamode(struct ata_port *ap, struct ata_device *adev)
|
||||
{
|
||||
struct pata_icside_state *state = ap->host->private_data;
|
||||
struct ata_timing t;
|
||||
unsigned int cycle;
|
||||
char iomd_type;
|
||||
|
||||
/*
|
||||
* DMA is based on a 16MHz clock
|
||||
*/
|
||||
if (ata_timing_compute(adev, adev->dma_mode, &t, 1000, 1))
|
||||
return;
|
||||
|
||||
/*
|
||||
* Choose the IOMD cycle timing which ensure that the interface
|
||||
* satisfies the measured active, recovery and cycle times.
|
||||
*/
|
||||
if (t.active <= 50 && t.recover <= 375 && t.cycle <= 425)
|
||||
iomd_type = 'D', cycle = 187;
|
||||
else if (t.active <= 125 && t.recover <= 375 && t.cycle <= 500)
|
||||
iomd_type = 'C', cycle = 250;
|
||||
else if (t.active <= 200 && t.recover <= 550 && t.cycle <= 750)
|
||||
iomd_type = 'B', cycle = 437;
|
||||
else
|
||||
iomd_type = 'A', cycle = 562;
|
||||
|
||||
ata_dev_printk(adev, KERN_INFO, "timings: act %dns rec %dns cyc %dns (%c)\n",
|
||||
t.active, t.recover, t.cycle, iomd_type);
|
||||
|
||||
state->port[ap->port_no].speed[adev->devno] = cycle;
|
||||
}
|
||||
|
||||
static void pata_icside_bmdma_setup(struct ata_queued_cmd *qc)
|
||||
{
|
||||
struct ata_port *ap = qc->ap;
|
||||
struct pata_icside_state *state = ap->host->private_data;
|
||||
struct scatterlist *sg, *rsg = state->sg;
|
||||
unsigned int write = qc->tf.flags & ATA_TFLAG_WRITE;
|
||||
|
||||
/*
|
||||
* We are simplex; BUG if we try to fiddle with DMA
|
||||
* while it's active.
|
||||
*/
|
||||
BUG_ON(dma_channel_active(state->dma));
|
||||
|
||||
/*
|
||||
* Copy ATAs scattered sg list into a contiguous array of sg
|
||||
*/
|
||||
ata_for_each_sg(sg, qc) {
|
||||
memcpy(rsg, sg, sizeof(*sg));
|
||||
rsg++;
|
||||
}
|
||||
|
||||
/*
|
||||
* Route the DMA signals to the correct interface
|
||||
*/
|
||||
writeb(state->port[ap->port_no].port_sel, state->ioc_base);
|
||||
|
||||
set_dma_speed(state->dma, state->port[ap->port_no].speed[qc->dev->devno]);
|
||||
set_dma_sg(state->dma, state->sg, rsg - state->sg);
|
||||
set_dma_mode(state->dma, write ? DMA_MODE_WRITE : DMA_MODE_READ);
|
||||
|
||||
/* issue r/w command */
|
||||
ap->ops->exec_command(ap, &qc->tf);
|
||||
}
|
||||
|
||||
static void pata_icside_bmdma_start(struct ata_queued_cmd *qc)
|
||||
{
|
||||
struct ata_port *ap = qc->ap;
|
||||
struct pata_icside_state *state = ap->host->private_data;
|
||||
|
||||
BUG_ON(dma_channel_active(state->dma));
|
||||
enable_dma(state->dma);
|
||||
}
|
||||
|
||||
static void pata_icside_bmdma_stop(struct ata_queued_cmd *qc)
|
||||
{
|
||||
struct ata_port *ap = qc->ap;
|
||||
struct pata_icside_state *state = ap->host->private_data;
|
||||
|
||||
disable_dma(state->dma);
|
||||
|
||||
/* see ata_bmdma_stop */
|
||||
ata_altstatus(ap);
|
||||
}
|
||||
|
||||
static u8 pata_icside_bmdma_status(struct ata_port *ap)
|
||||
{
|
||||
struct pata_icside_state *state = ap->host->private_data;
|
||||
void __iomem *irq_port;
|
||||
|
||||
irq_port = state->irq_port + (ap->port_no ? ICS_ARCIN_V6_INTRSTAT_2 :
|
||||
ICS_ARCIN_V6_INTRSTAT_1);
|
||||
|
||||
return readb(irq_port) & 1 ? ATA_DMA_INTR : 0;
|
||||
}
|
||||
|
||||
static int icside_dma_init(struct ata_probe_ent *ae, struct expansion_card *ec)
|
||||
{
|
||||
struct pata_icside_state *state = ae->private_data;
|
||||
int i;
|
||||
|
||||
for (i = 0; i < ATA_MAX_DEVICES; i++) {
|
||||
state->port[0].speed[i] = 480;
|
||||
state->port[1].speed[i] = 480;
|
||||
}
|
||||
|
||||
if (ec->dma != NO_DMA && !request_dma(ec->dma, DRV_NAME)) {
|
||||
state->dma = ec->dma;
|
||||
ae->mwdma_mask = 0x07; /* MW0..2 */
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
static int pata_icside_port_start(struct ata_port *ap)
|
||||
{
|
||||
/* No PRD to alloc */
|
||||
return ata_pad_alloc(ap, ap->dev);
|
||||
}
|
||||
|
||||
static struct scsi_host_template pata_icside_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 = PATA_ICSIDE_MAX_SG,
|
||||
.cmd_per_lun = ATA_SHT_CMD_PER_LUN,
|
||||
.emulated = ATA_SHT_EMULATED,
|
||||
.use_clustering = ATA_SHT_USE_CLUSTERING,
|
||||
.proc_name = DRV_NAME,
|
||||
.dma_boundary = ~0, /* no dma boundaries */
|
||||
.slave_configure = ata_scsi_slave_config,
|
||||
.slave_destroy = ata_scsi_slave_destroy,
|
||||
.bios_param = ata_std_bios_param,
|
||||
};
|
||||
|
||||
/* wish this was exported from libata-core */
|
||||
static void ata_dummy_noret(struct ata_port *port)
|
||||
{
|
||||
}
|
||||
|
||||
/*
|
||||
* We need to shut down unused ports to prevent spurious interrupts.
|
||||
* FIXME: the libata core doesn't call this function for PATA interfaces.
|
||||
*/
|
||||
static void pata_icside_port_disable(struct ata_port *ap)
|
||||
{
|
||||
struct pata_icside_state *state = ap->host->private_data;
|
||||
|
||||
ata_port_printk(ap, KERN_ERR, "disabling icside port\n");
|
||||
|
||||
ata_port_disable(ap);
|
||||
|
||||
state->port[ap->port_no].disabled = 1;
|
||||
|
||||
if (state->type == ICS_TYPE_V6) {
|
||||
/*
|
||||
* Disable interrupts from this port, otherwise we
|
||||
* receive spurious interrupts from the floating
|
||||
* interrupt line.
|
||||
*/
|
||||
void __iomem *irq_port = state->irq_port +
|
||||
(ap->port_no ? ICS_ARCIN_V6_INTROFFSET_2 : ICS_ARCIN_V6_INTROFFSET_1);
|
||||
readb(irq_port);
|
||||
}
|
||||
}
|
||||
|
||||
static u8 pata_icside_irq_ack(struct ata_port *ap, unsigned int chk_drq)
|
||||
{
|
||||
unsigned int bits = chk_drq ? ATA_BUSY | ATA_DRQ : ATA_BUSY;
|
||||
u8 status;
|
||||
|
||||
status = ata_busy_wait(ap, bits, 1000);
|
||||
if (status & bits)
|
||||
if (ata_msg_err(ap))
|
||||
printk(KERN_ERR "abnormal status 0x%X\n", status);
|
||||
|
||||
if (ata_msg_intr(ap))
|
||||
printk(KERN_INFO "%s: irq ack: drv_stat 0x%X\n",
|
||||
__FUNCTION__, status);
|
||||
|
||||
return status;
|
||||
}
|
||||
|
||||
static struct ata_port_operations pata_icside_port_ops = {
|
||||
.port_disable = pata_icside_port_disable,
|
||||
|
||||
.set_dmamode = pata_icside_set_dmamode,
|
||||
|
||||
.tf_load = ata_tf_load,
|
||||
.tf_read = ata_tf_read,
|
||||
.exec_command = ata_exec_command,
|
||||
.check_status = ata_check_status,
|
||||
.dev_select = ata_std_dev_select,
|
||||
|
||||
.bmdma_setup = pata_icside_bmdma_setup,
|
||||
.bmdma_start = pata_icside_bmdma_start,
|
||||
|
||||
.data_xfer = ata_data_xfer_noirq,
|
||||
|
||||
/* no need to build any PRD tables for DMA */
|
||||
.qc_prep = ata_noop_qc_prep,
|
||||
.qc_issue = ata_qc_issue_prot,
|
||||
|
||||
.freeze = ata_bmdma_freeze,
|
||||
.thaw = ata_bmdma_thaw,
|
||||
.error_handler = ata_bmdma_error_handler,
|
||||
.post_internal_cmd = pata_icside_bmdma_stop,
|
||||
|
||||
.irq_handler = ata_interrupt,
|
||||
.irq_clear = ata_dummy_noret,
|
||||
.irq_on = ata_irq_on,
|
||||
.irq_ack = pata_icside_irq_ack,
|
||||
|
||||
.port_start = pata_icside_port_start,
|
||||
|
||||
.bmdma_stop = pata_icside_bmdma_stop,
|
||||
.bmdma_status = pata_icside_bmdma_status,
|
||||
};
|
||||
|
||||
static void
|
||||
pata_icside_add_port(struct ata_probe_ent *ae, void __iomem *base,
|
||||
const struct portinfo *info)
|
||||
{
|
||||
struct ata_ioports *ioaddr = &ae->port[ae->n_ports++];
|
||||
void __iomem *cmd = base + info->dataoffset;
|
||||
|
||||
ioaddr->cmd_addr = cmd;
|
||||
ioaddr->data_addr = cmd + (ATA_REG_DATA << info->stepping);
|
||||
ioaddr->error_addr = cmd + (ATA_REG_ERR << info->stepping);
|
||||
ioaddr->feature_addr = cmd + (ATA_REG_FEATURE << info->stepping);
|
||||
ioaddr->nsect_addr = cmd + (ATA_REG_NSECT << info->stepping);
|
||||
ioaddr->lbal_addr = cmd + (ATA_REG_LBAL << info->stepping);
|
||||
ioaddr->lbam_addr = cmd + (ATA_REG_LBAM << info->stepping);
|
||||
ioaddr->lbah_addr = cmd + (ATA_REG_LBAH << info->stepping);
|
||||
ioaddr->device_addr = cmd + (ATA_REG_DEVICE << info->stepping);
|
||||
ioaddr->status_addr = cmd + (ATA_REG_STATUS << info->stepping);
|
||||
ioaddr->command_addr = cmd + (ATA_REG_CMD << info->stepping);
|
||||
|
||||
ioaddr->ctl_addr = base + info->ctrloffset;
|
||||
ioaddr->altstatus_addr = ioaddr->ctl_addr;
|
||||
}
|
||||
|
||||
static int __init
|
||||
pata_icside_register_v5(struct ata_probe_ent *ae, struct expansion_card *ec)
|
||||
{
|
||||
struct pata_icside_state *state = ae->private_data;
|
||||
void __iomem *base;
|
||||
|
||||
base = ioremap(ecard_resource_start(ec, ECARD_RES_MEMC),
|
||||
ecard_resource_len(ec, ECARD_RES_MEMC));
|
||||
if (!base)
|
||||
return -ENOMEM;
|
||||
|
||||
state->irq_port = base;
|
||||
|
||||
ec->irqaddr = base + ICS_ARCIN_V5_INTRSTAT;
|
||||
ec->irqmask = 1;
|
||||
ec->irq_data = state;
|
||||
ec->ops = &pata_icside_ops_arcin_v5;
|
||||
|
||||
/*
|
||||
* Be on the safe side - disable interrupts
|
||||
*/
|
||||
ec->ops->irqdisable(ec, ec->irq);
|
||||
|
||||
pata_icside_add_port(ae, base, &pata_icside_portinfo_v5);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int __init
|
||||
pata_icside_register_v6(struct ata_probe_ent *ae, struct expansion_card *ec)
|
||||
{
|
||||
struct pata_icside_state *state = ae->private_data;
|
||||
void __iomem *ioc_base, *easi_base;
|
||||
unsigned int sel = 0;
|
||||
int ret;
|
||||
|
||||
ioc_base = ioremap(ecard_resource_start(ec, ECARD_RES_IOCFAST),
|
||||
ecard_resource_len(ec, ECARD_RES_IOCFAST));
|
||||
if (!ioc_base) {
|
||||
ret = -ENOMEM;
|
||||
goto out;
|
||||
}
|
||||
|
||||
easi_base = ioc_base;
|
||||
|
||||
if (ecard_resource_flags(ec, ECARD_RES_EASI)) {
|
||||
easi_base = ioremap(ecard_resource_start(ec, ECARD_RES_EASI),
|
||||
ecard_resource_len(ec, ECARD_RES_EASI));
|
||||
if (!easi_base) {
|
||||
ret = -ENOMEM;
|
||||
goto unmap_slot;
|
||||
}
|
||||
|
||||
/*
|
||||
* Enable access to the EASI region.
|
||||
*/
|
||||
sel = 1 << 5;
|
||||
}
|
||||
|
||||
writeb(sel, ioc_base);
|
||||
|
||||
ec->irq_data = state;
|
||||
ec->ops = &pata_icside_ops_arcin_v6;
|
||||
|
||||
state->irq_port = easi_base;
|
||||
state->ioc_base = ioc_base;
|
||||
state->port[0].port_sel = sel;
|
||||
state->port[1].port_sel = sel | 1;
|
||||
|
||||
/*
|
||||
* Be on the safe side - disable interrupts
|
||||
*/
|
||||
ec->ops->irqdisable(ec, ec->irq);
|
||||
|
||||
/*
|
||||
* Find and register the interfaces.
|
||||
*/
|
||||
pata_icside_add_port(ae, easi_base, &pata_icside_portinfo_v6_1);
|
||||
pata_icside_add_port(ae, easi_base, &pata_icside_portinfo_v6_2);
|
||||
|
||||
/*
|
||||
* FIXME: work around libata's aversion to calling port_disable.
|
||||
* This permanently disables interrupts on port 0 - bad luck if
|
||||
* you have a drive on that port.
|
||||
*/
|
||||
state->port[0].disabled = 1;
|
||||
|
||||
return icside_dma_init(ae, ec);
|
||||
|
||||
unmap_slot:
|
||||
iounmap(ioc_base);
|
||||
out:
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int __devinit
|
||||
pata_icside_probe(struct expansion_card *ec, const struct ecard_id *id)
|
||||
{
|
||||
struct pata_icside_state *state;
|
||||
struct ata_probe_ent ae;
|
||||
void __iomem *idmem;
|
||||
int ret;
|
||||
|
||||
ret = ecard_request_resources(ec);
|
||||
if (ret)
|
||||
goto out;
|
||||
|
||||
state = kzalloc(sizeof(struct pata_icside_state), GFP_KERNEL);
|
||||
if (!state) {
|
||||
ret = -ENOMEM;
|
||||
goto release;
|
||||
}
|
||||
|
||||
state->type = ICS_TYPE_NOTYPE;
|
||||
state->dma = NO_DMA;
|
||||
|
||||
idmem = ioremap(ecard_resource_start(ec, ECARD_RES_IOCFAST),
|
||||
ecard_resource_len(ec, ECARD_RES_IOCFAST));
|
||||
if (idmem) {
|
||||
unsigned int type;
|
||||
|
||||
type = readb(idmem + ICS_IDENT_OFFSET) & 1;
|
||||
type |= (readb(idmem + ICS_IDENT_OFFSET + 4) & 1) << 1;
|
||||
type |= (readb(idmem + ICS_IDENT_OFFSET + 8) & 1) << 2;
|
||||
type |= (readb(idmem + ICS_IDENT_OFFSET + 12) & 1) << 3;
|
||||
iounmap(idmem);
|
||||
|
||||
state->type = type;
|
||||
}
|
||||
|
||||
memset(&ae, 0, sizeof(ae));
|
||||
INIT_LIST_HEAD(&ae.node);
|
||||
ae.dev = &ec->dev;
|
||||
ae.port_ops = &pata_icside_port_ops;
|
||||
ae.sht = &pata_icside_sht;
|
||||
ae.pio_mask = 0x1f;
|
||||
ae.irq = ec->irq;
|
||||
ae.port_flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST;
|
||||
ae._host_flags = ATA_HOST_SIMPLEX;
|
||||
ae.private_data = state;
|
||||
|
||||
switch (state->type) {
|
||||
case ICS_TYPE_A3IN:
|
||||
dev_warn(&ec->dev, "A3IN unsupported\n");
|
||||
ret = -ENODEV;
|
||||
break;
|
||||
|
||||
case ICS_TYPE_A3USER:
|
||||
dev_warn(&ec->dev, "A3USER unsupported\n");
|
||||
ret = -ENODEV;
|
||||
break;
|
||||
|
||||
case ICS_TYPE_V5:
|
||||
ret = pata_icside_register_v5(&ae, ec);
|
||||
break;
|
||||
|
||||
case ICS_TYPE_V6:
|
||||
ret = pata_icside_register_v6(&ae, ec);
|
||||
break;
|
||||
|
||||
default:
|
||||
dev_warn(&ec->dev, "unknown interface type\n");
|
||||
ret = -ENODEV;
|
||||
break;
|
||||
}
|
||||
|
||||
if (ret == 0)
|
||||
ret = ata_device_add(&ae) == 0 ? -ENODEV : 0;
|
||||
|
||||
if (ret == 0)
|
||||
goto out;
|
||||
|
||||
kfree(state);
|
||||
release:
|
||||
ecard_release_resources(ec);
|
||||
out:
|
||||
return ret;
|
||||
}
|
||||
|
||||
static void pata_icside_shutdown(struct expansion_card *ec)
|
||||
{
|
||||
struct ata_host *host = ecard_get_drvdata(ec);
|
||||
unsigned long flags;
|
||||
|
||||
/*
|
||||
* Disable interrupts from this card. We need to do
|
||||
* this before disabling EASI since we may be accessing
|
||||
* this register via that region.
|
||||
*/
|
||||
local_irq_save(flags);
|
||||
if (ec->ops)
|
||||
ec->ops->irqdisable(ec, ec->irq);
|
||||
local_irq_restore(flags);
|
||||
|
||||
/*
|
||||
* Reset the ROM pointer so that we can read the ROM
|
||||
* after a soft reboot. This also disables access to
|
||||
* the IDE taskfile via the EASI region.
|
||||
*/
|
||||
if (host) {
|
||||
struct pata_icside_state *state = host->private_data;
|
||||
if (state->ioc_base)
|
||||
writeb(0, state->ioc_base);
|
||||
}
|
||||
}
|
||||
|
||||
static void __devexit pata_icside_remove(struct expansion_card *ec)
|
||||
{
|
||||
struct ata_host *host = ecard_get_drvdata(ec);
|
||||
struct pata_icside_state *state = host->private_data;
|
||||
|
||||
ata_host_detach(host);
|
||||
|
||||
pata_icside_shutdown(ec);
|
||||
|
||||
/*
|
||||
* don't NULL out the drvdata - devres/libata wants it
|
||||
* to free the ata_host structure.
|
||||
*/
|
||||
ec->ops = NULL;
|
||||
ec->irq_data = NULL;
|
||||
|
||||
if (state->dma != NO_DMA)
|
||||
free_dma(state->dma);
|
||||
if (state->ioc_base)
|
||||
iounmap(state->ioc_base);
|
||||
if (state->ioc_base != state->irq_port)
|
||||
iounmap(state->irq_port);
|
||||
|
||||
kfree(state);
|
||||
ecard_release_resources(ec);
|
||||
}
|
||||
|
||||
static const struct ecard_id pata_icside_ids[] = {
|
||||
{ MANU_ICS, PROD_ICS_IDE },
|
||||
{ MANU_ICS2, PROD_ICS2_IDE },
|
||||
{ 0xffff, 0xffff }
|
||||
};
|
||||
|
||||
static struct ecard_driver pata_icside_driver = {
|
||||
.probe = pata_icside_probe,
|
||||
.remove = __devexit_p(pata_icside_remove),
|
||||
.shutdown = pata_icside_shutdown,
|
||||
.id_table = pata_icside_ids,
|
||||
.drv = {
|
||||
.name = DRV_NAME,
|
||||
},
|
||||
};
|
||||
|
||||
static int __init pata_icside_init(void)
|
||||
{
|
||||
return ecard_register_driver(&pata_icside_driver);
|
||||
}
|
||||
|
||||
static void __exit pata_icside_exit(void)
|
||||
{
|
||||
ecard_remove_driver(&pata_icside_driver);
|
||||
}
|
||||
|
||||
MODULE_AUTHOR("Russell King <rmk@arm.linux.org.uk>");
|
||||
MODULE_LICENSE("GPL");
|
||||
MODULE_DESCRIPTION("ICS PATA driver");
|
||||
|
||||
module_init(pata_icside_init);
|
||||
module_exit(pata_icside_exit);
|
||||
Loading…
Reference in New Issue