mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-21 08:19:28 +00:00
![Christian Dietrich](/assets/img/avatar_default.png)
Use correct format string parameter for the peak datarate, and prevent uninitialized use of cycle_time. Signed-off-by: Christian Dietrich <christian.dietrich@informatik.uni-erlangen.de> Signed-off-by: David S. Miller <davem@davemloft.net>
692 lines
16 KiB
C
692 lines
16 KiB
C
/*
|
|
* Copyright (c) 1996-2004 Russell King.
|
|
*
|
|
* Please note that this platform does not support 32-bit IDE IO.
|
|
*/
|
|
|
|
#include <linux/string.h>
|
|
#include <linux/module.h>
|
|
#include <linux/ioport.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/blkdev.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/ide.h>
|
|
#include <linux/dma-mapping.h>
|
|
#include <linux/device.h>
|
|
#include <linux/init.h>
|
|
#include <linux/scatterlist.h>
|
|
#include <linux/io.h>
|
|
|
|
#include <asm/dma.h>
|
|
#include <asm/ecard.h>
|
|
|
|
#define DRV_NAME "icside"
|
|
|
|
#define ICS_IDENT_OFFSET 0x2280
|
|
|
|
#define ICS_ARCIN_V5_INTRSTAT 0x0000
|
|
#define ICS_ARCIN_V5_INTROFFSET 0x0004
|
|
#define ICS_ARCIN_V5_IDEOFFSET 0x2800
|
|
#define ICS_ARCIN_V5_IDEALTOFFSET 0x2b80
|
|
#define ICS_ARCIN_V5_IDESTEPPING 6
|
|
|
|
#define ICS_ARCIN_V6_IDEOFFSET_1 0x2000
|
|
#define ICS_ARCIN_V6_INTROFFSET_1 0x2200
|
|
#define ICS_ARCIN_V6_INTRSTAT_1 0x2290
|
|
#define ICS_ARCIN_V6_IDEALTOFFSET_1 0x2380
|
|
#define ICS_ARCIN_V6_IDEOFFSET_2 0x3000
|
|
#define ICS_ARCIN_V6_INTROFFSET_2 0x3200
|
|
#define ICS_ARCIN_V6_INTRSTAT_2 0x3290
|
|
#define ICS_ARCIN_V6_IDEALTOFFSET_2 0x3380
|
|
#define ICS_ARCIN_V6_IDESTEPPING 6
|
|
|
|
struct cardinfo {
|
|
unsigned int dataoffset;
|
|
unsigned int ctrloffset;
|
|
unsigned int stepping;
|
|
};
|
|
|
|
static struct cardinfo icside_cardinfo_v5 = {
|
|
.dataoffset = ICS_ARCIN_V5_IDEOFFSET,
|
|
.ctrloffset = ICS_ARCIN_V5_IDEALTOFFSET,
|
|
.stepping = ICS_ARCIN_V5_IDESTEPPING,
|
|
};
|
|
|
|
static struct cardinfo icside_cardinfo_v6_1 = {
|
|
.dataoffset = ICS_ARCIN_V6_IDEOFFSET_1,
|
|
.ctrloffset = ICS_ARCIN_V6_IDEALTOFFSET_1,
|
|
.stepping = ICS_ARCIN_V6_IDESTEPPING,
|
|
};
|
|
|
|
static struct cardinfo icside_cardinfo_v6_2 = {
|
|
.dataoffset = ICS_ARCIN_V6_IDEOFFSET_2,
|
|
.ctrloffset = ICS_ARCIN_V6_IDEALTOFFSET_2,
|
|
.stepping = ICS_ARCIN_V6_IDESTEPPING,
|
|
};
|
|
|
|
struct icside_state {
|
|
unsigned int channel;
|
|
unsigned int enabled;
|
|
void __iomem *irq_port;
|
|
void __iomem *ioc_base;
|
|
unsigned int sel;
|
|
unsigned int type;
|
|
struct ide_host *host;
|
|
};
|
|
|
|
#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: icside_irqenable_arcin_v5 (struct expansion_card *ec, int irqnr)
|
|
* Purpose : enable interrupts from card
|
|
*/
|
|
static void icside_irqenable_arcin_v5 (struct expansion_card *ec, int irqnr)
|
|
{
|
|
struct icside_state *state = ec->irq_data;
|
|
|
|
writeb(0, state->irq_port + ICS_ARCIN_V5_INTROFFSET);
|
|
}
|
|
|
|
/* Prototype: icside_irqdisable_arcin_v5 (struct expansion_card *ec, int irqnr)
|
|
* Purpose : disable interrupts from card
|
|
*/
|
|
static void icside_irqdisable_arcin_v5 (struct expansion_card *ec, int irqnr)
|
|
{
|
|
struct icside_state *state = ec->irq_data;
|
|
|
|
readb(state->irq_port + ICS_ARCIN_V5_INTROFFSET);
|
|
}
|
|
|
|
static const expansioncard_ops_t icside_ops_arcin_v5 = {
|
|
.irqenable = icside_irqenable_arcin_v5,
|
|
.irqdisable = icside_irqdisable_arcin_v5,
|
|
};
|
|
|
|
|
|
/* ---------------- Version 6 PCB Support Functions --------------------- */
|
|
/* Prototype: icside_irqenable_arcin_v6 (struct expansion_card *ec, int irqnr)
|
|
* Purpose : enable interrupts from card
|
|
*/
|
|
static void icside_irqenable_arcin_v6 (struct expansion_card *ec, int irqnr)
|
|
{
|
|
struct icside_state *state = ec->irq_data;
|
|
void __iomem *base = state->irq_port;
|
|
|
|
state->enabled = 1;
|
|
|
|
switch (state->channel) {
|
|
case 0:
|
|
writeb(0, base + ICS_ARCIN_V6_INTROFFSET_1);
|
|
readb(base + ICS_ARCIN_V6_INTROFFSET_2);
|
|
break;
|
|
case 1:
|
|
writeb(0, base + ICS_ARCIN_V6_INTROFFSET_2);
|
|
readb(base + ICS_ARCIN_V6_INTROFFSET_1);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* Prototype: icside_irqdisable_arcin_v6 (struct expansion_card *ec, int irqnr)
|
|
* Purpose : disable interrupts from card
|
|
*/
|
|
static void icside_irqdisable_arcin_v6 (struct expansion_card *ec, int irqnr)
|
|
{
|
|
struct icside_state *state = ec->irq_data;
|
|
|
|
state->enabled = 0;
|
|
|
|
readb(state->irq_port + ICS_ARCIN_V6_INTROFFSET_1);
|
|
readb(state->irq_port + ICS_ARCIN_V6_INTROFFSET_2);
|
|
}
|
|
|
|
/* Prototype: icside_irqprobe(struct expansion_card *ec)
|
|
* Purpose : detect an active interrupt from card
|
|
*/
|
|
static int icside_irqpending_arcin_v6(struct expansion_card *ec)
|
|
{
|
|
struct 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 icside_ops_arcin_v6 = {
|
|
.irqenable = icside_irqenable_arcin_v6,
|
|
.irqdisable = icside_irqdisable_arcin_v6,
|
|
.irqpending = icside_irqpending_arcin_v6,
|
|
};
|
|
|
|
/*
|
|
* Handle routing of interrupts. This is called before
|
|
* we write the command to the drive.
|
|
*/
|
|
static void icside_maskproc(ide_drive_t *drive, int mask)
|
|
{
|
|
ide_hwif_t *hwif = drive->hwif;
|
|
struct expansion_card *ec = ECARD_DEV(hwif->dev);
|
|
struct icside_state *state = ecard_get_drvdata(ec);
|
|
unsigned long flags;
|
|
|
|
local_irq_save(flags);
|
|
|
|
state->channel = hwif->channel;
|
|
|
|
if (state->enabled && !mask) {
|
|
switch (hwif->channel) {
|
|
case 0:
|
|
writeb(0, state->irq_port + ICS_ARCIN_V6_INTROFFSET_1);
|
|
readb(state->irq_port + ICS_ARCIN_V6_INTROFFSET_2);
|
|
break;
|
|
case 1:
|
|
writeb(0, state->irq_port + ICS_ARCIN_V6_INTROFFSET_2);
|
|
readb(state->irq_port + ICS_ARCIN_V6_INTROFFSET_1);
|
|
break;
|
|
}
|
|
} else {
|
|
readb(state->irq_port + ICS_ARCIN_V6_INTROFFSET_2);
|
|
readb(state->irq_port + ICS_ARCIN_V6_INTROFFSET_1);
|
|
}
|
|
|
|
local_irq_restore(flags);
|
|
}
|
|
|
|
static const struct ide_port_ops icside_v6_no_dma_port_ops = {
|
|
.maskproc = icside_maskproc,
|
|
};
|
|
|
|
#ifdef CONFIG_BLK_DEV_IDEDMA_ICS
|
|
/*
|
|
* 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 187 250 437
|
|
* C 125 (125) 125 (375) 250 (500)
|
|
* D 62 125 187
|
|
*
|
|
* (figures in brackets are actual measured timings)
|
|
*
|
|
* 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 icside_set_dma_mode(ide_hwif_t *hwif, ide_drive_t *drive)
|
|
{
|
|
unsigned long cycle_time = 0;
|
|
int use_dma_info = 0;
|
|
const u8 xfer_mode = drive->dma_mode;
|
|
|
|
switch (xfer_mode) {
|
|
case XFER_MW_DMA_2:
|
|
cycle_time = 250;
|
|
use_dma_info = 1;
|
|
break;
|
|
|
|
case XFER_MW_DMA_1:
|
|
cycle_time = 250;
|
|
use_dma_info = 1;
|
|
break;
|
|
|
|
case XFER_MW_DMA_0:
|
|
cycle_time = 480;
|
|
break;
|
|
|
|
case XFER_SW_DMA_2:
|
|
case XFER_SW_DMA_1:
|
|
case XFER_SW_DMA_0:
|
|
cycle_time = 480;
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* If we're going to be doing MW_DMA_1 or MW_DMA_2, we should
|
|
* take care to note the values in the ID...
|
|
*/
|
|
if (use_dma_info && drive->id[ATA_ID_EIDE_DMA_TIME] > cycle_time)
|
|
cycle_time = drive->id[ATA_ID_EIDE_DMA_TIME];
|
|
|
|
ide_set_drivedata(drive, (void *)cycle_time);
|
|
|
|
printk(KERN_INFO "%s: %s selected (peak %luMB/s)\n",
|
|
drive->name, ide_xfer_verbose(xfer_mode),
|
|
2000 / (cycle_time ? cycle_time : (unsigned long) -1));
|
|
}
|
|
|
|
static const struct ide_port_ops icside_v6_port_ops = {
|
|
.set_dma_mode = icside_set_dma_mode,
|
|
.maskproc = icside_maskproc,
|
|
};
|
|
|
|
static void icside_dma_host_set(ide_drive_t *drive, int on)
|
|
{
|
|
}
|
|
|
|
static int icside_dma_end(ide_drive_t *drive)
|
|
{
|
|
ide_hwif_t *hwif = drive->hwif;
|
|
struct expansion_card *ec = ECARD_DEV(hwif->dev);
|
|
|
|
disable_dma(ec->dma);
|
|
|
|
return get_dma_residue(ec->dma) != 0;
|
|
}
|
|
|
|
static void icside_dma_start(ide_drive_t *drive)
|
|
{
|
|
ide_hwif_t *hwif = drive->hwif;
|
|
struct expansion_card *ec = ECARD_DEV(hwif->dev);
|
|
|
|
/* We can not enable DMA on both channels simultaneously. */
|
|
BUG_ON(dma_channel_active(ec->dma));
|
|
enable_dma(ec->dma);
|
|
}
|
|
|
|
static int icside_dma_setup(ide_drive_t *drive, struct ide_cmd *cmd)
|
|
{
|
|
ide_hwif_t *hwif = drive->hwif;
|
|
struct expansion_card *ec = ECARD_DEV(hwif->dev);
|
|
struct icside_state *state = ecard_get_drvdata(ec);
|
|
unsigned int dma_mode;
|
|
|
|
if (cmd->tf_flags & IDE_TFLAG_WRITE)
|
|
dma_mode = DMA_MODE_WRITE;
|
|
else
|
|
dma_mode = DMA_MODE_READ;
|
|
|
|
/*
|
|
* We can not enable DMA on both channels.
|
|
*/
|
|
BUG_ON(dma_channel_active(ec->dma));
|
|
|
|
/*
|
|
* Ensure that we have the right interrupt routed.
|
|
*/
|
|
icside_maskproc(drive, 0);
|
|
|
|
/*
|
|
* Route the DMA signals to the correct interface.
|
|
*/
|
|
writeb(state->sel | hwif->channel, state->ioc_base);
|
|
|
|
/*
|
|
* Select the correct timing for this drive.
|
|
*/
|
|
set_dma_speed(ec->dma, (unsigned long)ide_get_drivedata(drive));
|
|
|
|
/*
|
|
* Tell the DMA engine about the SG table and
|
|
* data direction.
|
|
*/
|
|
set_dma_sg(ec->dma, hwif->sg_table, cmd->sg_nents);
|
|
set_dma_mode(ec->dma, dma_mode);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int icside_dma_test_irq(ide_drive_t *drive)
|
|
{
|
|
ide_hwif_t *hwif = drive->hwif;
|
|
struct expansion_card *ec = ECARD_DEV(hwif->dev);
|
|
struct icside_state *state = ecard_get_drvdata(ec);
|
|
|
|
return readb(state->irq_port +
|
|
(hwif->channel ?
|
|
ICS_ARCIN_V6_INTRSTAT_2 :
|
|
ICS_ARCIN_V6_INTRSTAT_1)) & 1;
|
|
}
|
|
|
|
static int icside_dma_init(ide_hwif_t *hwif, const struct ide_port_info *d)
|
|
{
|
|
hwif->dmatable_cpu = NULL;
|
|
hwif->dmatable_dma = 0;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct ide_dma_ops icside_v6_dma_ops = {
|
|
.dma_host_set = icside_dma_host_set,
|
|
.dma_setup = icside_dma_setup,
|
|
.dma_start = icside_dma_start,
|
|
.dma_end = icside_dma_end,
|
|
.dma_test_irq = icside_dma_test_irq,
|
|
.dma_lost_irq = ide_dma_lost_irq,
|
|
};
|
|
#endif
|
|
|
|
static int icside_dma_off_init(ide_hwif_t *hwif, const struct ide_port_info *d)
|
|
{
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
static void icside_setup_ports(struct ide_hw *hw, void __iomem *base,
|
|
struct cardinfo *info, struct expansion_card *ec)
|
|
{
|
|
unsigned long port = (unsigned long)base + info->dataoffset;
|
|
|
|
hw->io_ports.data_addr = port;
|
|
hw->io_ports.error_addr = port + (1 << info->stepping);
|
|
hw->io_ports.nsect_addr = port + (2 << info->stepping);
|
|
hw->io_ports.lbal_addr = port + (3 << info->stepping);
|
|
hw->io_ports.lbam_addr = port + (4 << info->stepping);
|
|
hw->io_ports.lbah_addr = port + (5 << info->stepping);
|
|
hw->io_ports.device_addr = port + (6 << info->stepping);
|
|
hw->io_ports.status_addr = port + (7 << info->stepping);
|
|
hw->io_ports.ctl_addr = (unsigned long)base + info->ctrloffset;
|
|
|
|
hw->irq = ec->irq;
|
|
hw->dev = &ec->dev;
|
|
}
|
|
|
|
static const struct ide_port_info icside_v5_port_info = {
|
|
.host_flags = IDE_HFLAG_NO_DMA,
|
|
.chipset = ide_acorn,
|
|
};
|
|
|
|
static int __devinit
|
|
icside_register_v5(struct icside_state *state, struct expansion_card *ec)
|
|
{
|
|
void __iomem *base;
|
|
struct ide_host *host;
|
|
struct ide_hw hw, *hws[] = { &hw };
|
|
int ret;
|
|
|
|
base = ecardm_iomap(ec, ECARD_RES_MEMC, 0, 0);
|
|
if (!base)
|
|
return -ENOMEM;
|
|
|
|
state->irq_port = base;
|
|
|
|
ec->irqaddr = base + ICS_ARCIN_V5_INTRSTAT;
|
|
ec->irqmask = 1;
|
|
|
|
ecard_setirq(ec, &icside_ops_arcin_v5, state);
|
|
|
|
/*
|
|
* Be on the safe side - disable interrupts
|
|
*/
|
|
icside_irqdisable_arcin_v5(ec, 0);
|
|
|
|
icside_setup_ports(&hw, base, &icside_cardinfo_v5, ec);
|
|
|
|
host = ide_host_alloc(&icside_v5_port_info, hws, 1);
|
|
if (host == NULL)
|
|
return -ENODEV;
|
|
|
|
state->host = host;
|
|
|
|
ecard_set_drvdata(ec, state);
|
|
|
|
ret = ide_host_register(host, &icside_v5_port_info, hws);
|
|
if (ret)
|
|
goto err_free;
|
|
|
|
return 0;
|
|
err_free:
|
|
ide_host_free(host);
|
|
ecard_set_drvdata(ec, NULL);
|
|
return ret;
|
|
}
|
|
|
|
static const struct ide_port_info icside_v6_port_info __initdata = {
|
|
.init_dma = icside_dma_off_init,
|
|
.port_ops = &icside_v6_no_dma_port_ops,
|
|
.host_flags = IDE_HFLAG_SERIALIZE | IDE_HFLAG_MMIO,
|
|
.mwdma_mask = ATA_MWDMA2,
|
|
.swdma_mask = ATA_SWDMA2,
|
|
.chipset = ide_acorn,
|
|
};
|
|
|
|
static int __devinit
|
|
icside_register_v6(struct icside_state *state, struct expansion_card *ec)
|
|
{
|
|
void __iomem *ioc_base, *easi_base;
|
|
struct ide_host *host;
|
|
unsigned int sel = 0;
|
|
int ret;
|
|
struct ide_hw hw[2], *hws[] = { &hw[0], &hw[1] };
|
|
struct ide_port_info d = icside_v6_port_info;
|
|
|
|
ioc_base = ecardm_iomap(ec, ECARD_RES_IOCFAST, 0, 0);
|
|
if (!ioc_base) {
|
|
ret = -ENOMEM;
|
|
goto out;
|
|
}
|
|
|
|
easi_base = ioc_base;
|
|
|
|
if (ecard_resource_flags(ec, ECARD_RES_EASI)) {
|
|
easi_base = ecardm_iomap(ec, ECARD_RES_EASI, 0, 0);
|
|
if (!easi_base) {
|
|
ret = -ENOMEM;
|
|
goto out;
|
|
}
|
|
|
|
/*
|
|
* Enable access to the EASI region.
|
|
*/
|
|
sel = 1 << 5;
|
|
}
|
|
|
|
writeb(sel, ioc_base);
|
|
|
|
ecard_setirq(ec, &icside_ops_arcin_v6, state);
|
|
|
|
state->irq_port = easi_base;
|
|
state->ioc_base = ioc_base;
|
|
state->sel = sel;
|
|
|
|
/*
|
|
* Be on the safe side - disable interrupts
|
|
*/
|
|
icside_irqdisable_arcin_v6(ec, 0);
|
|
|
|
icside_setup_ports(&hw[0], easi_base, &icside_cardinfo_v6_1, ec);
|
|
icside_setup_ports(&hw[1], easi_base, &icside_cardinfo_v6_2, ec);
|
|
|
|
host = ide_host_alloc(&d, hws, 2);
|
|
if (host == NULL)
|
|
return -ENODEV;
|
|
|
|
state->host = host;
|
|
|
|
ecard_set_drvdata(ec, state);
|
|
|
|
#ifdef CONFIG_BLK_DEV_IDEDMA_ICS
|
|
if (ec->dma != NO_DMA && !request_dma(ec->dma, DRV_NAME)) {
|
|
d.init_dma = icside_dma_init;
|
|
d.port_ops = &icside_v6_port_ops;
|
|
d.dma_ops = &icside_v6_dma_ops;
|
|
}
|
|
#endif
|
|
|
|
ret = ide_host_register(host, &d, hws);
|
|
if (ret)
|
|
goto err_free;
|
|
|
|
return 0;
|
|
err_free:
|
|
ide_host_free(host);
|
|
if (d.dma_ops)
|
|
free_dma(ec->dma);
|
|
ecard_set_drvdata(ec, NULL);
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
static int __devinit
|
|
icside_probe(struct expansion_card *ec, const struct ecard_id *id)
|
|
{
|
|
struct icside_state *state;
|
|
void __iomem *idmem;
|
|
int ret;
|
|
|
|
ret = ecard_request_resources(ec);
|
|
if (ret)
|
|
goto out;
|
|
|
|
state = kzalloc(sizeof(struct icside_state), GFP_KERNEL);
|
|
if (!state) {
|
|
ret = -ENOMEM;
|
|
goto release;
|
|
}
|
|
|
|
state->type = ICS_TYPE_NOTYPE;
|
|
|
|
idmem = ecardm_iomap(ec, ECARD_RES_IOCFAST, 0, 0);
|
|
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;
|
|
ecardm_iounmap(ec, idmem);
|
|
|
|
state->type = type;
|
|
}
|
|
|
|
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 = icside_register_v5(state, ec);
|
|
break;
|
|
|
|
case ICS_TYPE_V6:
|
|
ret = icside_register_v6(state, ec);
|
|
break;
|
|
|
|
default:
|
|
dev_warn(&ec->dev, "unknown interface type\n");
|
|
ret = -ENODEV;
|
|
break;
|
|
}
|
|
|
|
if (ret == 0)
|
|
goto out;
|
|
|
|
kfree(state);
|
|
release:
|
|
ecard_release_resources(ec);
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
static void __devexit icside_remove(struct expansion_card *ec)
|
|
{
|
|
struct icside_state *state = ecard_get_drvdata(ec);
|
|
|
|
switch (state->type) {
|
|
case ICS_TYPE_V5:
|
|
/* FIXME: tell IDE to stop using the interface */
|
|
|
|
/* Disable interrupts */
|
|
icside_irqdisable_arcin_v5(ec, 0);
|
|
break;
|
|
|
|
case ICS_TYPE_V6:
|
|
/* FIXME: tell IDE to stop using the interface */
|
|
if (ec->dma != NO_DMA)
|
|
free_dma(ec->dma);
|
|
|
|
/* Disable interrupts */
|
|
icside_irqdisable_arcin_v6(ec, 0);
|
|
|
|
/* Reset the ROM pointer/EASI selection */
|
|
writeb(0, state->ioc_base);
|
|
break;
|
|
}
|
|
|
|
ecard_set_drvdata(ec, NULL);
|
|
|
|
kfree(state);
|
|
ecard_release_resources(ec);
|
|
}
|
|
|
|
static void icside_shutdown(struct expansion_card *ec)
|
|
{
|
|
struct icside_state *state = 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);
|
|
ec->ops->irqdisable(ec, 0);
|
|
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 (state->ioc_base)
|
|
writeb(0, state->ioc_base);
|
|
}
|
|
|
|
static const struct ecard_id icside_ids[] = {
|
|
{ MANU_ICS, PROD_ICS_IDE },
|
|
{ MANU_ICS2, PROD_ICS2_IDE },
|
|
{ 0xffff, 0xffff }
|
|
};
|
|
|
|
static struct ecard_driver icside_driver = {
|
|
.probe = icside_probe,
|
|
.remove = __devexit_p(icside_remove),
|
|
.shutdown = icside_shutdown,
|
|
.id_table = icside_ids,
|
|
.drv = {
|
|
.name = "icside",
|
|
},
|
|
};
|
|
|
|
static int __init icside_init(void)
|
|
{
|
|
return ecard_register_driver(&icside_driver);
|
|
}
|
|
|
|
static void __exit icside_exit(void)
|
|
{
|
|
ecard_remove_driver(&icside_driver);
|
|
}
|
|
|
|
MODULE_AUTHOR("Russell King <rmk@arm.linux.org.uk>");
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_DESCRIPTION("ICS IDE driver");
|
|
|
|
module_init(icside_init);
|
|
module_exit(icside_exit);
|