[PATCH 4/4] ide: add struct ide_host

Bartlomiej Zolnierkiewicz
2008-06-22T19:35:37Z

* Add struct ide_host which keeps pointers to host's ports.

* Add ide_host_alloc[_all]() and ide_host_remove() helpers.

* Pass 'struct ide_host *host' instead of 'u8 *idx' to
ide_device_add[_all]() and rename it to ide_host_register[_all]().

* Convert host drivers and core code to use struct ide_host.

* Remove no longer needed ide_find_port().

* Make ide_find_port_slot() static.

* Unexport ide_unregister().

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
---
still on TODO:
- fix ide_host_register() to fail only if it cannot add all ports
- add ide_host_add() which does ide_host_alloc() + ide_host_register()
- add ide_host_free() for freeing ide_hwifs[]'s slots and host instance

drivers/ide/arm/icside.c | 40 ++++------------
drivers/ide/arm/ide_arm.c | 12 +---
drivers/ide/arm/palm_bk3710.c | 13 +----
drivers/ide/arm/rapide.c | 17 ++----
drivers/ide/h8300/ide-h8300.c | 14 +----
drivers/ide/ide-generic.c | 28 +++--------
drivers/ide/ide-pnp.c | 17 ++----
drivers/ide/ide-probe.c | 94 +++++++++++++++++++++++++++-----------
drivers/ide/ide.c | 2
drivers/ide/legacy/buddha.c | 19 ++-----
drivers/ide/legacy/falconide.c | 11 +---
drivers/ide/legacy/gayle.c | 16 ++----
drivers/ide/legacy/ide-4drives.c | 23 ++-------
drivers/ide/legacy/ide-cs.c | 48 +++++++++----------
drivers/ide/legacy/ide_platform.c | 23 ++++-----
drivers/ide/legacy/macide.c | 11 +---
drivers/ide/legacy/q40ide.c | 15 ++----
drivers/ide/mips/au1xxx-ide.c | 25 ++++------
drivers/ide/mips/swarm.c | 13 ++---
drivers/ide/pci/cmd640.c | 30 +++---------
drivers/ide/pci/cs5520.c | 8 ++-
drivers/ide/pci/delkin_cb.c | 19 ++-----
drivers/ide/pci/scc_pata.c | 24 ++++-----
drivers/ide/pci/sgiioc4.c | 13 ++---
drivers/ide/ppc/pmac.c | 14 ++---
drivers/ide/setup-pci.c | 48 +++++++------------
include/linux/ide.h | 21 ++++----
27 files changed, 264 insertions(+), 354 deletions(-)

Index: b/drivers/ide/arm/icside.c
===================================================================
--- a/drivers/ide/arm/icside.c
+++ b/drivers/ide/arm/icside.c
@@ -72,7 +72,7 @@ struct icside_state {
void __iomem *ioc_base;
unsigned int sel;
unsigned int type;
- ide_hwif_t *hwif[2];
+ struct ide_host *host;
};

#define ICS_TYPE_A3IN 0
@@ -442,10 +442,9 @@ static void icside_setup_ports(hw_regs_t
static int __init
icside_register_v5(struct icside_state *state, struct expansion_card *ec)
{
- ide_hwif_t *hwif;
void __iomem *base;
+ struct ide_host *host;
hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };
- u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };

base = ecardm_iomap(ec, ECARD_RES_MEMC, 0, 0);
if (!base)
@@ -465,17 +464,15 @@ icside_register_v5(struct icside_state *

icside_setup_ports(&hw, base, &icside_cardinfo_v5, ec);

- hwif = ide_find_port();
- if (!hwif)
+ host = ide_host_alloc(NULL, hws);
+ if (host == NULL)
return -ENODEV;

- state->hwif[0] = hwif;
+ state->host = host;

ecard_set_drvdata(ec, state);

- idx[0] = hwif->index;
-
- ide_device_add(idx, NULL, hws);
+ ide_host_register(host, NULL, hws);

return 0;
}
@@ -492,12 +489,11 @@ static const struct ide_port_info icside
static int __init
icside_register_v6(struct icside_state *state, struct expansion_card *ec)
{
- ide_hwif_t *hwif, *mate;
void __iomem *ioc_base, *easi_base;
+ struct ide_host *host;
unsigned int sel = 0;
int ret;
hw_regs_t hw[2], *hws[] = { &hw[0], NULL, NULL, NULL };
- u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
struct ide_port_info d = icside_v6_port_info;

ioc_base = ecardm_iomap(ec, ECARD_RES_IOCFAST, 0, 0);
@@ -537,25 +533,11 @@ icside_register_v6(struct icside_state *
icside_setup_ports(&hw[0], easi_base, &icside_cardinfo_v6_1, ec);
icside_setup_ports(&hw[1], easi_base, &icside_cardinfo_v6_2, ec);

- /*
- * Find and register the interfaces.
- */
- hwif = ide_find_port();
- if (hwif == NULL)
+ host = ide_host_alloc(&d, hws);
+ if (host == NULL)
return -ENODEV;

- hwif->chipset = ide_acorn;
-
- idx[0] = hwif->index;
-
- mate = ide_find_port();
- if (mate) {
- hws[1] = &hw[1];
- idx[1] = mate->index;
- }
-
- state->hwif[0] = hwif;
- state->hwif[1] = mate;
+ state->host = host;

ecard_set_drvdata(ec, state);

@@ -565,7 +547,7 @@ icside_register_v6(struct icside_state *
d.dma_ops = NULL;
}

- ide_device_add(idx, &d, hws);
+ ide_host_register(host, &d, hws);

return 0;

Index: b/drivers/ide/arm/ide_arm.c
===================================================================
--- a/drivers/ide/arm/ide_arm.c
+++ b/drivers/ide/arm/ide_arm.c
@@ -28,10 +28,9 @@

static int __init ide_arm_init(void)
{
- ide_hwif_t *hwif;
+ struct ide_host *host;
unsigned long base = IDE_ARM_IO, ctl = IDE_ARM_IO + 0x206;
hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };
- u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };

if (!request_region(base, 8, DRV_NAME)) {
printk(KERN_ERR "%s: I/O resource 0x%lX-0x%lX not free.\n",
@@ -51,12 +50,9 @@ static int __init ide_arm_init(void)
hw.irq = IDE_ARM_IRQ;
hw.chipset = ide_generic;

- hwif = ide_find_port();
- if (hwif) {
- idx[0] = hwif->index;
-
- ide_device_add(idx, NULL, hws);
- }
+ host = ide_host_alloc(NULL, hws);
+ if (host)
+ ide_host_register(host, NULL, hws);

return 0;
}
Index: b/drivers/ide/arm/palm_bk3710.c
===================================================================
--- a/drivers/ide/arm/palm_bk3710.c
+++ b/drivers/ide/arm/palm_bk3710.c
@@ -349,11 +349,10 @@ static int __devinit palm_bk3710_probe(s
{
struct clk *clkp;
struct resource *mem, *irq;
- ide_hwif_t *hwif;
+ struct ide_host *host;
unsigned long base;
int i;
hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };
- u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };

clkp = clk_get(NULL, "IDECLK");
if (IS_ERR(clkp))
@@ -395,15 +394,11 @@ static int __devinit palm_bk3710_probe(s
hw.irq = irq->start;
hw.chipset = ide_palm3710;

- hwif = ide_find_port();
- if (hwif == NULL)
+ host = ide_host_alloc(&palm_bk3710_port_info, hws);
+ if (host == NULL)
goto out;

- i = hwif->index;
-
- idx[0] = i;
-
- ide_device_add(idx, &palm_bk3710_port_info, hws);
+ ide_host_register(host, &palm_bk3710_port_info, hws);

return 0;
out:
Index: b/drivers/ide/arm/rapide.c
===================================================================
--- a/drivers/ide/arm/rapide.c
+++ b/drivers/ide/arm/rapide.c
@@ -32,11 +32,10 @@ static void rapide_setup_ports(hw_regs_t
static int __devinit
rapide_probe(struct expansion_card *ec, const struct ecard_id *id)
{
- ide_hwif_t *hwif;
void __iomem *base;
+ struct ide_host *host;
int ret;
hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };
- u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };

ret = ecard_request_resources(ec);
if (ret)
@@ -53,17 +52,15 @@ rapide_probe(struct expansion_card *ec,
hw.chipset = ide_generic;
hw.dev = &ec->dev;

- hwif = ide_find_port();
- if (hwif == NULL) {
+ host = ide_host_alloc(&rapide_port_info, hws);
+ if (host == NULL) {
ret = -ENOENT;
goto release;
}

- idx[0] = hwif->index;
+ ide_host_register(host, &rapide_port_info, hws);

- ide_device_add(idx, &rapide_port_info, hws);
-
- ecard_set_drvdata(ec, hwif);
+ ecard_set_drvdata(ec, host);
goto out;

release:
@@ -74,11 +71,11 @@ rapide_probe(struct expansion_card *ec,

static void __devexit rapide_remove(struct expansion_card *ec)
{
- ide_hwif_t *hwif = ecard_get_drvdata(ec);
+ struct ide_host *host = ecard_get_drvdata(ec);

ecard_set_drvdata(ec, NULL);

- ide_unregister(hwif);
+ ide_host_remove(host);

ecard_release_resources(ec);
}
Index: b/drivers/ide/h8300/ide-h8300.c
===================================================================
--- a/drivers/ide/h8300/ide-h8300.c
+++ b/drivers/ide/h8300/ide-h8300.c
@@ -191,10 +191,8 @@ static const struct ide_port_info h8300_

static int __init h8300_ide_init(void)
{
- ide_hwif_t *hwif;
- int index;
+ struct ide_host *host;
hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };
- u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };

printk(KERN_INFO DRV_NAME ": H8/300 generic IDE interface\n");

@@ -207,15 +205,11 @@ static int __init h8300_ide_init(void)

hw_setup(&hw);

- hwif = ide_find_port_slot(&h8300_port_info);
- if (hwif == NULL)
+ host = ide_host_alloc(&h8300_port_info, hws);
+ if (host == NULL)
return -ENOENT;

- index = hwif->index;
-
- idx[0] = index;
-
- ide_device_add(idx, &h8300_port_info, hws);
+ ide_host_register(host, &h8300_port_info, hws);

return 0;

Index: b/drivers/ide/ide-generic.c
===================================================================
--- a/drivers/ide/ide-generic.c
+++ b/drivers/ide/ide-generic.c
@@ -28,27 +28,24 @@ MODULE_PARM_DESC(probe_mask, "probe mask

static ssize_t store_add(struct class *cls, const char *buf, size_t n)
{
- ide_hwif_t *hwif;
+ struct ide_host *host;
unsigned int base, ctl;
int irq;
hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };
- u8 idx[] = { 0xff, 0xff, 0xff, 0xff };

if (sscanf(buf, "%x:%x:%d", &base, &ctl, &irq) != 3)
return -EINVAL;

- hwif = ide_find_port();
- if (hwif == NULL)
- return -ENOENT;
-
memset(&hw, 0, sizeof(hw));
ide_std_init_ports(&hw, base, ctl);
hw.irq = irq;
hw.chipset = ide_generic;

- idx[0] = hwif->index;
+ host = ide_host_alloc(NULL, hws);
+ if (host == NULL)
+ return -ENOENT;

- ide_device_add(idx, NULL, hws);
+ ide_host_register(host, NULL, hws);

return n;
};
@@ -89,18 +86,16 @@ static int __init ide_generic_sysfs_init
static int __init ide_generic_init(void)
{
hw_regs_t hw[MAX_HWIFS], *hws[MAX_HWIFS];
- u8 idx[MAX_HWIFS];
+ struct ide_host *host;
int i;

printk(KERN_INFO DRV_NAME ": please use \"probe_mask=0x3f\" module "
"parameter for probing all legacy ISA IDE ports\n");

for (i = 0; i < MAX_HWIFS; i++) {
- ide_hwif_t *hwif;
unsigned long io_addr = ide_default_io_base(i);

hws[i] = NULL;
- idx[i] = 0xff;

if ((probe_mask & (1 << i)) && io_addr) {
if (!request_region(io_addr, 8, DRV_NAME)) {
@@ -118,23 +113,18 @@ static int __init ide_generic_init(void)
continue;
}

- hwif = ide_find_port();
- if (hwif == NULL)
- continue;
-
- hwif->chipset = ide_generic;
-
memset(&hw[i], 0, sizeof(hw[i]));
ide_std_init_ports(&hw[i], io_addr, io_addr + 0x206);
hw[i].irq = ide_default_irq(io_addr);
hw[i].chipset = ide_generic;

hws[i] = &hw[i];
- idx[i] = i;
}
}

- ide_device_add_all(idx, NULL, hws);
+ host = ide_host_alloc_all(NULL, hws);
+ if (host)
+ ide_host_register(host, NULL, hws);

if (ide_generic_sysfs_init())
printk(KERN_ERR DRV_NAME ": failed to create ide_generic "
Index: b/drivers/ide/ide-pnp.c
===================================================================
--- a/drivers/ide/ide-pnp.c
+++ b/drivers/ide/ide-pnp.c
@@ -29,7 +29,7 @@ static struct pnp_device_id idepnp_devic

static int idepnp_probe(struct pnp_dev *dev, const struct pnp_device_id *dev_id)
{
- ide_hwif_t *hwif;
+ struct ide_host *host;
unsigned long base, ctl;
hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };

@@ -59,14 +59,11 @@ static int idepnp_probe(struct pnp_dev *
hw.irq = pnp_irq(dev, 0);
hw.chipset = ide_generic;

- hwif = ide_find_port();
- if (hwif) {
- u8 index = hwif->index;
- u8 idx[4] = { index, 0xff, 0xff, 0xff };
+ host = ide_host_alloc(NULL, hws);
+ if (host) {
+ pnp_set_drvdata(dev, host);

- pnp_set_drvdata(dev, hwif);
-
- ide_device_add(idx, NULL, hws);
+ ide_host_register(host, NULL, hws);

return 0;
}
@@ -79,9 +76,9 @@ static int idepnp_probe(struct pnp_dev *

static void idepnp_remove(struct pnp_dev *dev)
{
- ide_hwif_t *hwif = pnp_get_drvdata(dev);
+ struct ide_host *host = pnp_get_drvdata(dev);

- ide_unregister(hwif);
+ ide_host_remove(host);

release_region(pnp_port_start(dev, 1), 1);
release_region(pnp_port_start(dev, 0), 8);
Index: b/drivers/ide/ide-probe.c
===================================================================
--- a/drivers/ide/ide-probe.c
+++ b/drivers/ide/ide-probe.c
@@ -1483,7 +1483,7 @@ static int ide_sysfs_register_port(ide_h
* Return the new hwif. If we are out of free slots return NULL.
*/

-ide_hwif_t *ide_find_port_slot(const struct ide_port_info *d)
+static ide_hwif_t *ide_find_port_slot(const struct ide_port_info *d)
{
ide_hwif_t *hwif;
int i;
@@ -1529,14 +1529,63 @@ out_found:
ide_init_port_data(hwif, i);
return hwif;
}
-EXPORT_SYMBOL_GPL(ide_find_port_slot);

-int ide_device_add_all(u8 *idx, const struct ide_port_info *d, hw_regs_t **hws)
+struct ide_host *ide_host_alloc_all(const struct ide_port_info *d,
+ hw_regs_t **hws)
+{
+ struct ide_host *host;
+ int i;
+
+ host = kzalloc(sizeof(*host), GFP_KERNEL);
+ if (host == NULL)
+ return NULL;
+
+ for (i = 0; i < MAX_HWIFS; i++) {
+ ide_hwif_t *hwif;
+
+ if (hws[i] == NULL)
+ continue;
+
+ hwif = ide_find_port_slot(d);
+ if (hwif) {
+ hwif->chipset = hws[i]->chipset;
+
+ host->ports[i] = hwif;
+ host->n_ports++;
+ }
+ }
+
+ if (host->n_ports == 0) {
+ kfree(host);
+ return NULL;
+ }
+
+ return host;
+}
+EXPORT_SYMBOL_GPL(ide_host_alloc_all);
+
+struct ide_host *ide_host_alloc(const struct ide_port_info *d, hw_regs_t **hws)
+{
+ hw_regs_t *hws_all[MAX_HWIFS];
+ int i;
+
+ for (i = 0; i < MAX_HWIFS; i++)
+ hws_all[i] = (i < 4) ? hws[i] : NULL;
+
+ return ide_host_alloc_all(d, hws_all);
+}
+EXPORT_SYMBOL_GPL(ide_host_alloc);
+
+int ide_host_register(struct ide_host *host, const struct ide_port_info *d,
+ hw_regs_t **hws)
{
ide_hwif_t *hwif, *mate = NULL;
+ u8 idx[MAX_HWIFS];
int i, rc = 0;

for (i = 0; i < MAX_HWIFS; i++) {
+ idx[i] = host->ports[i] ? host->ports[i]->index : 0xff;
+
if (idx[i] == 0xff) {
mate = NULL;
continue;
@@ -1632,22 +1681,20 @@ int ide_device_add_all(u8 *idx, const st

return rc;
}
-EXPORT_SYMBOL_GPL(ide_device_add_all);
+EXPORT_SYMBOL_GPL(ide_host_register);

-int ide_device_add(u8 *idx, const struct ide_port_info *d, hw_regs_t **hws)
+void ide_host_remove(struct ide_host *host)
{
- hw_regs_t *hws_all[MAX_HWIFS];
- u8 idx_all[MAX_HWIFS];
int i;

for (i = 0; i < MAX_HWIFS; i++) {
- hws_all[i] = (i < 4) ? hws[i] : NULL;
- idx_all[i] = (i < 4) ? idx[i] : 0xff;
+ if (host->ports[i])
+ ide_unregister(host->ports[i]);
}

- return ide_device_add_all(idx_all, d, hws_all);
+ kfree(host);
}
-EXPORT_SYMBOL_GPL(ide_device_add);
+EXPORT_SYMBOL_GPL(ide_host_remove);

void ide_port_scan(ide_hwif_t *hwif)
{
@@ -1668,11 +1715,10 @@ void ide_port_scan(ide_hwif_t *hwif)
}
EXPORT_SYMBOL_GPL(ide_port_scan);

-static void ide_legacy_init_one(u8 *idx, hw_regs_t **hws, hw_regs_t *hw,
+static void ide_legacy_init_one(hw_regs_t **hws, hw_regs_t *hw,
u8 port_no, const struct ide_port_info *d,
unsigned long config)
{
- ide_hwif_t *hwif;
unsigned long base, ctl;
int irq;

@@ -1704,31 +1750,29 @@ static void ide_legacy_init_one(u8 *idx,
hw->chipset = d->chipset;
hw->config = config;

- hwif = ide_find_port_slot(d);
- if (hwif) {
- hwif->chipset = hw->chipset;
-
- hws[port_no] = hw;
- idx[port_no] = hwif->index;
- }
+ hws[port_no] = hw;
}

int ide_legacy_device_add(const struct ide_port_info *d, unsigned long config)
{
- u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
+ struct ide_host *host;
hw_regs_t hw[2], *hws[] = { NULL, NULL, NULL, NULL };

memset(&hw, 0, sizeof(hw));

if ((d->host_flags & IDE_HFLAG_QD_2ND_PORT) == 0)
- ide_legacy_init_one(idx, hws, &hw[0], 0, d, config);
- ide_legacy_init_one(idx, hws, &hw[1], 1, d, config);
+ ide_legacy_init_one(hws, &hw[0], 0, d, config);
+ ide_legacy_init_one(hws, &hw[1], 1, d, config);

- if (idx[0] == 0xff && idx[1] == 0xff &&
+ if (hws[0] == NULL && hws[1] == NULL &&
(d->host_flags & IDE_HFLAG_SINGLE))
return -ENOENT;

- ide_device_add(idx, d, hws);
+ host = ide_host_alloc(d, hws);
+ if (host == NULL)
+ return -ENOMEM;
+
+ ide_host_register(host, d, hws);

return 0;
}
Index: b/drivers/ide/ide.c
===================================================================
--- a/drivers/ide/ide.c
+++ b/drivers/ide/ide.c
@@ -276,8 +276,6 @@ abort:
mutex_unlock(&ide_cfg_mtx);
}

-EXPORT_SYMBOL(ide_unregister);
-
void ide_init_port_hw(ide_hwif_t *hwif, hw_regs_t *hw)
{
memcpy(&hwif->io_ports, &hw->io_ports, sizeof(hwif->io_ports));
Index: b/drivers/ide/legacy/buddha.c
===================================================================
--- a/drivers/ide/legacy/buddha.c
+++ b/drivers/ide/legacy/buddha.c
@@ -150,18 +150,15 @@ static void __init buddha_setup_ports(hw

static int __init buddha_init(void)
{
- ide_hwif_t *hwif;
- int i;
-
struct zorro_dev *z = NULL;
+ struct ide_host *host;
u_long buddha_board = 0;
BuddhaType type;
- int buddha_num_hwifs;
+ int buddha_num_hwifs, i;

while ((z = zorro_find_device(ZORRO_WILDCARD, z))) {
unsigned long board;
hw_regs_t hw[MAX_NUM_HWIFS], *hws[] = { NULL, NULL, NULL, NULL };
- u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };

if (z->id == ZORRO_PROD_INDIVIDUAL_COMPUTERS_BUDDHA) {
buddha_num_hwifs = BUDDHA_NUM_HWIFS;
@@ -226,16 +223,12 @@ fail_base2:
buddha_setup_ports(&hw[i], base, ctl, irq_port,
ack_intr);

- hwif = ide_find_port();
- if (hwif) {
- hwif->chipset = ide_generic;
-
- hws[i] = &hw[i];
- idx[i] = hwif->index;
- }
+ hws[i] = &hw[i];
}

- ide_device_add(idx, NULL, hws);
+ host = ide_host_alloc(NULL, hws);
+ if (host)
+ ide_host_register(host, NULL, hws);
}

return 0;
Index: b/drivers/ide/legacy/falconide.c
===================================================================
--- a/drivers/ide/legacy/falconide.c
+++ b/drivers/ide/legacy/falconide.c
@@ -112,7 +112,7 @@ static void __init falconide_setup_ports

static int __init falconide_init(void)
{
- ide_hwif_t *hwif;
+ struct ide_host *host;
hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };

if (!MACH_IS_ATARI || !ATARIHW_PRESENT(IDE))
@@ -127,13 +127,10 @@ static int __init falconide_init(void)

falconide_setup_ports(&hw);

- hwif = ide_find_port();
- if (hwif) {
- u8 index = hwif->index;
- u8 idx[4] = { index, 0xff, 0xff, 0xff };
-
+ host = ide_host_alloc(&falconide_port_info, hws);
+ if (host) {
ide_get_lock(NULL, NULL);
- ide_device_add(idx, &falconide_port_info, hws);
+ ide_host_register(host, &falconide_port_info, hws);
ide_release_lock();
}

Index: b/drivers/ide/legacy/gayle.c
===================================================================
--- a/drivers/ide/legacy/gayle.c
+++ b/drivers/ide/legacy/gayle.c
@@ -127,9 +127,9 @@ static int __init gayle_init(void)
unsigned long phys_base, res_start, res_n;
unsigned long base, ctrlport, irqport;
ide_ack_intr_t *ack_intr;
+ struct ide_host *host;
int a4000, i;
hw_regs_t hw[GAYLE_NUM_HWIFS], *hws[] = { NULL, NULL, NULL, NULL };
- u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };

if (!MACH_IS_AMIGA)
return -ENODEV;
@@ -172,23 +172,17 @@ found:
return -EBUSY;

for (i = 0; i < GAYLE_NUM_PROBE_HWIFS; i++) {
- ide_hwif_t *hwif;
-
base = (unsigned long)ZTWO_VADDR(phys_base + i * GAYLE_NEXT_PORT);
ctrlport = GAYLE_HAS_CONTROL_REG ? (base + GAYLE_CONTROL) : 0;

gayle_setup_ports(&hw[i], base, ctrlport, irqport, ack_intr);

- hwif = ide_find_port();
- if (hwif) {
- hwif->chipset = ide_generic;
-
- hws[i] = &hw[i];
- idx[i] = hwif->index;
- }
+ hws[i] = &hw[i];
}

- ide_device_add(idx, NULL, hws);
+ host = ide_host_alloc(NULL, hws);
+ if (host)
+ ide_host_register(host, NULL, hws);

return 0;
}
Index: b/drivers/ide/legacy/ide-4drives.c
===================================================================
--- a/drivers/ide/legacy/ide-4drives.c
+++ b/drivers/ide/legacy/ide-4drives.c
@@ -28,10 +28,9 @@ static const struct ide_port_info ide_4d

static int __init ide_4drives_init(void)
{
- ide_hwif_t *hwif, *mate;
+ struct ide_host *host;
unsigned long base = 0x1f0, ctl = 0x3f6;
- hw_regs_t hw, *hws[] = { NULL, NULL, NULL, NULL };
- u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
+ hw_regs_t hw, *hws[] = { &hw, &hw, NULL, NULL };

if (probe_4drives == 0)
return -ENODEV;
@@ -55,21 +54,9 @@ static int __init ide_4drives_init(void)
hw.irq = 14;
hw.chipset = ide_4drives;

- hwif = ide_find_port();
- if (hwif) {
- hwif->chipset = ide_4drives;
-
- hws[0] = &hw;
- idx[0] = hwif->index;
- }
-
- mate = ide_find_port();
- if (mate) {
- hws[1] = &hw;
- idx[1] = mate->index;
- }
-
- ide_device_add(idx, &ide_4drives_port_info, hws);
+ host = ide_host_alloc(&ide_4drives_port_info, hws);
+ if (host)
+ ide_host_register(host, &ide_4drives_port_info, hws);

return 0;
}
Index: b/drivers/ide/legacy/ide-cs.c
===================================================================
--- a/drivers/ide/legacy/ide-cs.c
+++ b/drivers/ide/legacy/ide-cs.c
@@ -76,7 +76,7 @@ static char *version =

typedef struct ide_info_t {
struct pcmcia_device *p_dev;
- ide_hwif_t *hwif;
+ struct ide_host *host;
int ndev;
dev_node_t node;
} ide_info_t;
@@ -134,7 +134,7 @@ static int ide_probe(struct pcmcia_devic
static void ide_detach(struct pcmcia_device *link)
{
ide_info_t *info = link->priv;
- ide_hwif_t *hwif = info->hwif;
+ ide_hwif_t *hwif = info->host->ports[0];
unsigned long data_addr, ctl_addr;

DEBUG(0, "ide_detach(0x%p)\n", link);
@@ -159,13 +159,13 @@ static const struct ide_port_info idecs_
.host_flags = IDE_HFLAG_NO_DMA,
};

-static ide_hwif_t *idecs_register(unsigned long io, unsigned long ctl,
+static struct ide_host *idecs_register(unsigned long io, unsigned long ctl,
unsigned long irq, struct pcmcia_device *handle)
{
+ struct ide_host *host;
ide_hwif_t *hwif;
int i;
hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };
- u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };

if (!request_region(io, 8, DRV_NAME)) {
printk(KERN_ERR "%s: I/O resource 0x%lX-0x%lX not free.\n",
@@ -186,28 +186,26 @@ static ide_hwif_t *idecs_register(unsign
hw.chipset = ide_pci;
hw.dev = &handle->dev;

- hwif = ide_find_port();
- if (hwif == NULL)
+ host = ide_host_alloc(&idecs_port_info, hws);
+ if (host == NULL)
goto out_release;

- ide_init_port_hw(hwif, &hw);
+ ide_host_register(host, &idecs_port_info, hws);

- idx[0] = hwif->index;
-
- ide_device_add(idx, &idecs_port_info, hws);
+ hwif = host->ports[0];

if (hwif->present)
- return hwif;
+ return host;

/* retry registration in case device is still spinning up */
for (i = 0; i < 10; i++) {
msleep(100);
ide_port_scan(hwif);
if (hwif->present)
- return hwif;
+ return host;
}

- return hwif;
+ return host;

out_release:
release_region(ctl, 1);
@@ -239,7 +237,7 @@ static int ide_config(struct pcmcia_devi
cistpl_cftable_entry_t *cfg;
int pass, last_ret = 0, last_fn = 0, is_kme = 0;
unsigned long io_base, ctl_base;
- ide_hwif_t *hwif;
+ struct ide_host *host;

DEBUG(0, "ide_config(0x%p)\n", link);

@@ -334,21 +332,21 @@ static int ide_config(struct pcmcia_devi
if (is_kme)
outb(0x81, ctl_base+1);

- hwif = idecs_register(io_base, ctl_base, link->irq.AssignedIRQ, link);
- if (hwif == NULL && link->io.NumPorts1 == 0x20) {
+ host = idecs_register(io_base, ctl_base, link->irq.AssignedIRQ, link);
+ if (host == NULL && link->io.NumPorts1 == 0x20) {
outb(0x02, ctl_base + 0x10);
- hwif = idecs_register(io_base + 0x10, ctl_base + 0x10,
+ host = idecs_register(io_base + 0x10, ctl_base + 0x10,
link->irq.AssignedIRQ, link);
}

- if (hwif == NULL)
+ if (host == NULL)
goto failed;

info->ndev = 1;
- sprintf(info->node.dev_name, "hd%c", 'a' + hwif->index * 2);
- info->node.major = hwif->major;
+ sprintf(info->node.dev_name, "hd%c", 'a' + host->ports[0]->index * 2);
+ info->node.major = host->ports[0]->major;
info->node.minor = 0;
- info->hwif = hwif;
+ info->host = host;
link->dev_node = &info->node;
printk(KERN_INFO "ide-cs: %s: Vpp = %d.%d\n",
info->node.dev_name, link->conf.Vpp / 10, link->conf.Vpp % 10);
@@ -379,15 +377,15 @@ failed:
void ide_release(struct pcmcia_device *link)
{
ide_info_t *info = link->priv;
- ide_hwif_t *hwif = info->hwif;
+ struct ide_host *host = info->host;

DEBUG(0, "ide_release(0x%p)\n", link);

- if (info->ndev) {
+ if (info->ndev)
/* FIXME: if this fails we need to queue the cleanup somehow
-- need to investigate the required PCMCIA magic */
- ide_unregister(hwif);
- }
+ ide_host_remove(host);
+
info->ndev = 0;

pcmcia_disable_device(link);
Index: b/drivers/ide/legacy/ide_platform.c
===================================================================
--- a/drivers/ide/legacy/ide_platform.c
+++ b/drivers/ide/legacy/ide_platform.c
@@ -52,11 +52,10 @@ static int __devinit plat_ide_probe(stru
{
struct resource *res_base, *res_alt, *res_irq;
void __iomem *base, *alt_base;
- ide_hwif_t *hwif;
struct pata_platform_info *pdata;
+ struct ide_host *host;
int ret = 0, mmio = 0;
hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };
- u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
struct ide_port_info d = platform_ide_port_info;

pdata = pdev->dev.platform_data;
@@ -93,12 +92,6 @@ static int __devinit plat_ide_probe(stru
res_alt->start, res_alt->end - res_alt->start + 1);
}

- hwif = ide_find_port();
- if (!hwif) {
- ret = -ENODEV;
- goto out;
- }
-
memset(&hw, 0, sizeof(hw));
plat_ide_setup_ports(&hw, base, alt_base, pdata, res_irq->start);
hw.dev = &pdev->dev;
@@ -106,11 +99,15 @@ static int __devinit plat_ide_probe(stru
if (mmio)
d.host_flags |= IDE_HFLAG_MMIO;

- idx[0] = hwif->index;
+ host = ide_host_alloc(&d, hws);
+ if (host == NULL) {
+ ret = -ENODEV;
+ goto out;
+ }

- ide_device_add(idx, &d, hws);
+ ide_host_register(host, &d, hws);

- platform_set_drvdata(pdev, hwif);
+ platform_set_drvdata(pdev, host);

return 0;

@@ -120,9 +117,9 @@ out:

static int __devexit plat_ide_remove(struct platform_device *pdev)
{
- ide_hwif_t *hwif = pdev->dev.driver_data;
+ struct ide_host *host = pdev->dev.driver_data;

- ide_unregister(hwif);
+ ide_host_remove(host);

return 0;
}
Index: b/drivers/ide/legacy/macide.c
===================================================================
--- a/drivers/ide/legacy/macide.c
+++ b/drivers/ide/legacy/macide.c
@@ -91,7 +91,6 @@ static const char *mac_ide_name[] =

static int __init macide_init(void)
{
- ide_hwif_t *hwif;
ide_ack_intr_t *ack_intr;
unsigned long base;
int irq;
@@ -125,13 +124,9 @@ static int __init macide_init(void)

macide_setup_ports(&hw, base, irq, ack_intr);

- hwif = ide_find_port();
- if (hwif) {
- u8 index = hwif->index;
- u8 idx[4] = { index, 0xff, 0xff, 0xff };
-
- ide_device_add(idx, NULL, hws);
- }
+ host = ide_host_alloc(NULL, hws);
+ if (host)
+ ide_host_register(host, NULL, hws);

return 0;
}
Index: b/drivers/ide/legacy/q40ide.c
===================================================================
--- a/drivers/ide/legacy/q40ide.c
+++ b/drivers/ide/legacy/q40ide.c
@@ -131,10 +131,9 @@ static const char *q40_ide_names[Q40IDE_

static int __init q40ide_init(void)
{
+ struct ide_host *host;
int i;
- ide_hwif_t *hwif;
hw_regs_t hw[Q40IDE_NUM_HWIFS], *hws[] = { NULL, NULL, NULL, NULL };
- u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };

if (!MACH_IS_Q40)
return -ENODEV;
@@ -158,16 +157,12 @@ static int __init q40ide_init(void)
q40_ide_setup_ports(&hw[i], pcide_bases[i], NULL,
q40ide_default_irq(pcide_bases[i]));

- hwif = ide_find_port();
- if (hwif) {
- hwif->chipset = ide_generic;
-
- hws[i] = &hw[i];
- idx[i] = hwif->index;
- }
+ hws[i] = &hw[i];
}

- ide_device_add(idx, &q40ide_port_info, hws);
+ host = ide_host_alloc(&q40ide_port_info, hws);
+ if (host)
+ ide_host_register(host, &q40ide_port_info, hws);

return 0;
}
Index: b/drivers/ide/mips/au1xxx-ide.c
===================================================================
--- a/drivers/ide/mips/au1xxx-ide.c
+++ b/drivers/ide/mips/au1xxx-ide.c
@@ -563,11 +563,10 @@ static int au_ide_probe(struct device *d
{
struct platform_device *pdev = to_platform_device(dev);
_auide_hwif *ahwif = &auide_hwif;
- ide_hwif_t *hwif;
struct resource *res;
+ struct ide_host *host;
int ret = 0;
hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };
- u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };

#if defined(CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA)
char *mode = "MWDMA2";
@@ -604,25 +603,23 @@ static int au_ide_probe(struct device *d
goto out;
}

- hwif = ide_find_port();
- if (hwif == NULL) {
- ret = -ENOENT;
- goto out;
- }
-
memset(&hw, 0, sizeof(hw));
auide_setup_ports(&hw, ahwif);
hw.irq = ahwif->irq;
hw.dev = dev;
hw.chipset = ide_au1xxx;

- auide_hwif.hwif = hwif;
+ host = ide_host_alloc(&au1xxx_port_info, hws);
+ if (host == NULL) {
+ ret = -ENOENT;
+ goto out;
+ }

- idx[0] = hwif->index;
+ ide_host_register(host, &au1xxx_port_info, hws);

- ide_device_add(idx, &au1xxx_port_info, hws);
+ auide_hwif.hwif = host->ports[0];

- dev_set_drvdata(dev, hwif);
+ dev_set_drvdata(dev, host);

printk(KERN_INFO "Au1xxx IDE(builtin) configured for %s\n", mode );

@@ -634,10 +631,10 @@ static int au_ide_remove(struct device *
{
struct platform_device *pdev = to_platform_device(dev);
struct resource *res;
- ide_hwif_t *hwif = dev_get_drvdata(dev);
+ struct ide_host *host = dev_get_drvdata(dev);
_auide_hwif *ahwif = &auide_hwif;

- ide_unregister(hwif);
+ ide_host_remove(host);

iounmap((void *)ahwif->regbase);

Index: b/drivers/ide/mips/swarm.c
===================================================================
--- a/drivers/ide/mips/swarm.c
+++ b/drivers/ide/mips/swarm.c
@@ -72,12 +72,11 @@ static const struct ide_port_info swarm_
*/
static int __devinit swarm_ide_probe(struct device *dev)
{
- ide_hwif_t *hwif;
u8 __iomem *base;
+ struct ide_host *host;
phys_t offset, size;
int i;
hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };
- u8 idx[] = { 0xff, 0xff, 0xff, 0xff };

if (!SIBYTE_HAVE_IDE)
return -ENODEV;
@@ -116,15 +115,13 @@ static int __devinit swarm_ide_probe(str
hw.irq = K_INT_GB_IDE;
hw.chipset = ide_generic;

- hwif = ide_find_port_slot(&swarm_port_info);
- if (hwif == NULL)
+ host = ide_host_alloc(&swarm_port_info, hws);
+ if (host == NULL)
goto err;

- idx[0] = hwif->index;
+ ide_host_register(host, &swarm_port_info, hws);

- ide_device_add(idx, &swarm_port_info, hws);
-
- dev_set_drvdata(dev, hwif);
+ dev_set_drvdata(dev, host);

return 0;
err:
Index: b/drivers/ide/pci/cmd640.c
===================================================================
--- a/drivers/ide/pci/cmd640.c
+++ b/drivers/ide/pci/cmd640.c
@@ -181,11 +181,6 @@ static u8 recovery_counts[4] = {16, 16,
static DEFINE_SPINLOCK(cmd640_lock);

/*
- * These are initialized to point at the devices we control
- */
-static ide_hwif_t *cmd_hwif0, *cmd_hwif1;
-
-/*
* Interface to access cmd640x registers
*/
static unsigned int cmd640_key;
@@ -714,11 +709,11 @@ static int cmd640x_init_one(unsigned lon
*/
static int __init cmd640x_init(void)
{
+ struct ide_host *host;
int second_port_cmd640 = 0, rc;
const char *bus_type, *port2;
u8 b, cfr;
hw_regs_t hw[2], *hws[] = { NULL, NULL, NULL, NULL };
- u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };

if (cmd640_vlb && probe_for_cmd640_vlb()) {
bus_type = "VLB";
@@ -781,17 +776,10 @@ static int __init cmd640x_init(void)
printk(KERN_INFO "cmd640: buggy cmd640%c interface on %s, config=0x%02x"
"\n", 'a' + cmd640_chip_version - 1, bus_type, cfr);

- cmd_hwif0 = ide_find_port();
-
/*
* Initialize data for primary port
*/
- if (cmd_hwif0) {
- cmd_hwif0->chipset = ide_cmd640;
-
- hws[0] = &hw[0];
- idx[0] = cmd_hwif0->index;
- }
+ hws[0] = &hw[0];

/*
* Ensure compatibility by always using the slowest timings
@@ -831,13 +819,9 @@ static int __init cmd640x_init(void)
/*
* Initialize data for secondary cmd640 port, if enabled
*/
- if (second_port_cmd640) {
- cmd_hwif1 = ide_find_port();
- if (cmd_hwif1) {
- hws[1] = &hw[1];
- idx[1] = cmd_hwif1->index;
- }
- }
+ if (second_port_cmd640)
+ hws[1] = &hw[1];
+
printk(KERN_INFO "cmd640: %sserialized, secondary interface %s\n",
second_port_cmd640 ? "" : "not ", port2);

@@ -845,7 +829,9 @@ static int __init cmd640x_init(void)
cmd640_dump_regs();
#endif

- ide_device_add(idx, &cmd640_port_info, hws);
+ host = ide_host_alloc(&cmd640_port_info, hws);
+ if (host)
+ ide_host_register(host, &cmd640_port_info, hws);

return 1;
}
Index: b/drivers/ide/pci/cs5520.c
===================================================================
--- a/drivers/ide/pci/cs5520.c
+++ b/drivers/ide/pci/cs5520.c
@@ -114,9 +114,9 @@ static const struct ide_port_info cyrix_

static int __devinit cs5520_init_one(struct pci_dev *dev, const struct pci_device_id *id)
{
+ struct ide_host *host;
const struct ide_port_info *d = &cyrix_chipsets[id->driver_data];
hw_regs_t hw[4], *hws[] = { NULL, NULL, NULL, NULL };
- u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };

ide_setup_pci_noise(dev, d);

@@ -138,9 +138,11 @@ static int __devinit cs5520_init_one(str
* do all the device setup for us
*/

- ide_pci_setup_ports(dev, d, 14, &idx[0], &hw[0], &hws[0]);
+ ide_pci_setup_ports(dev, d, 14, &hw[0], &hws[0]);

- ide_device_add(idx, d, hws);
+ host = ide_host_alloc(d, hws);
+ if (host)
+ ide_host_register(host, d, hws);

return 0;
}
Index: b/drivers/ide/pci/delkin_cb.c
===================================================================
--- a/drivers/ide/pci/delkin_cb.c
+++ b/drivers/ide/pci/delkin_cb.c
@@ -56,11 +56,10 @@ static const struct ide_port_info delkin
static int __devinit
delkin_cb_probe (struct pci_dev *dev, const struct pci_device_id *id)
{
+ struct ide_host *host;
unsigned long base;
- ide_hwif_t *hwif = NULL;
int i, rc;
hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };
- u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };

rc = pci_enable_device(dev);
if (rc) {
@@ -87,17 +86,13 @@ delkin_cb_probe (struct pci_dev *dev, co
hw.dev = &dev->dev;
hw.chipset = ide_pci; /* this enables IRQ sharing */

- hwif = ide_find_port();
- if (hwif == NULL)
+ host = ide_host_alloc(&delkin_cb_port_info, hws);
+ if (host == NULL)
goto out_disable;

- i = hwif->index;
+ ide_host_register(host, &delkin_cb_port_info, hws);

- idx[0] = i;
-
- ide_device_add(idx, &delkin_cb_port_info, hws);
-
- pci_set_drvdata(dev, hwif);
+ pci_set_drvdata(dev, host);

return 0;

@@ -110,9 +105,9 @@ out_disable:
static void
delkin_cb_remove (struct pci_dev *dev)
{
- ide_hwif_t *hwif = pci_get_drvdata(dev);
+ struct ide_host *host = pci_get_drvdata(dev);

- ide_unregister(hwif);
+ ide_host_remove(host);

pci_release_regions(dev);
pci_disable_device(dev);
Index: b/drivers/ide/pci/scc_pata.c
===================================================================
--- a/drivers/ide/pci/scc_pata.c
+++ b/drivers/ide/pci/scc_pata.c
@@ -65,7 +65,7 @@

static struct scc_ports {
unsigned long ctl, dma;
- ide_hwif_t *hwif; /* for removing port from system */
+ struct ide_host *host; /* for removing port from system */
} scc_ports[MAX_HWIFS];

/* PIO transfer mode table */
@@ -586,15 +586,10 @@ static int scc_ide_setup_pci_device(stru
const struct ide_port_info *d)
{
struct scc_ports *ports = pci_get_drvdata(dev);
- ide_hwif_t *hwif = NULL;
+ struct ide_host *host;
hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };
- u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
int i;

- hwif = ide_find_port_slot(d);
- if (hwif == NULL)
- return -ENOMEM;
-
memset(&hw, 0, sizeof(hw));
for (i = 0; i <= 8; i++)
hw.io_ports_array[i] = ports->dma + 0x20 + i * 4;
@@ -602,9 +597,13 @@ static int scc_ide_setup_pci_device(stru
hw.dev = &dev->dev;
hw.chipset = ide_pci;

- idx[0] = hwif->index;
+ host = ide_host_alloc(d, hws);
+ if (host == NULL)
+ return -ENOMEM;

- ide_device_add(idx, d, hws);
+ ide_host_register(host, d, hws);
+
+ ports->host = host;

return 0;
}
@@ -848,8 +847,6 @@ static void __devinit init_hwif_scc(ide_
{
struct scc_ports *ports = ide_get_hwifdata(hwif);

- ports->hwif = hwif;
-
/* PTERADD */
out_be32((void __iomem *)(hwif->dma_base + 0x018), hwif->dmatable_dma);

@@ -932,7 +929,8 @@ static int __devinit scc_init_one(struct
static void __devexit scc_remove(struct pci_dev *dev)
{
struct scc_ports *ports = pci_get_drvdata(dev);
- ide_hwif_t *hwif = ports->hwif;
+ struct ide_host *host = ports->host;
+ ide_hwif_t *hwif = host->ports[0];

if (hwif->dmatable_cpu) {
pci_free_consistent(dev, PRD_ENTRIES * PRD_BYTES,
@@ -940,7 +938,7 @@ static void __devexit scc_remove(struct
hwif->dmatable_cpu = NULL;
}

- ide_unregister(hwif);
+ ide_host_remove(host);

iounmap((void*)ports->dma);
iounmap((void*)ports->ctl);
Index: b/drivers/ide/pci/sgiioc4.c
===================================================================
--- a/drivers/ide/pci/sgiioc4.c
+++ b/drivers/ide/pci/sgiioc4.c
@@ -600,9 +600,8 @@ sgiioc4_ide_setup_pci_device(struct pci_
unsigned long cmd_base, irqport;
unsigned long bar0, cmd_phys_base, ctl;
void __iomem *virt_base;
- ide_hwif_t *hwif;
+ struct ide_host *host;
hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };
- u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
struct ide_port_info d = sgiioc4_port_info;

/* Get the CmdBlk and CtrlBlk Base Registers */
@@ -635,16 +634,14 @@ sgiioc4_ide_setup_pci_device(struct pci_
hw.chipset = ide_pci;
hw.dev = &dev->dev;

- hwif = ide_find_port_slot(&d);
- if (hwif == NULL)
- goto err;
-
/* Initializing chipset IRQ Registers */
writel(0x03, (void __iomem *)(irqport + IOC4_INTR_SET * 4));

- idx[0] = hwif->index;
+ host = ide_host_alloc(&d, hws);
+ if (host == NULL)
+ goto err;

- if (ide_device_add(idx, &d, hws))
+ if (ide_host_register(host, &d, hws))
return -EIO;

return 0;
Index: b/drivers/ide/ppc/pmac.c
===================================================================
--- a/drivers/ide/ppc/pmac.c
+++ b/drivers/ide/ppc/pmac.c
@@ -1037,9 +1037,8 @@ static int __devinit pmac_ide_setup_devi
{
struct device_node *np = pmif->node;
const int *bidp;
- ide_hwif_t *hwif;
+ struct ide_host *host;
hw_regs_t *hws[] = { hw, NULL, NULL, NULL };
- u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
struct ide_port_info d = pmac_port_info;

pmif->broken_dma = pmif->broken_dma_warn = 0;
@@ -1112,16 +1111,15 @@ static int __devinit pmac_ide_setup_devi
pmif->mdev ? "macio" : "PCI", pmif->aapl_bus_id,
pmif->mediabay ? " (mediabay)" : "", hw->irq);

- hwif = ide_find_port_slot(&d);
- if (hwif == NULL)
+ host = ide_alloc_host(&d, hws);
+ if (host == NULL)
return -ENOENT;

- idx[0] = hwif->index;
-
- ide_device_add(idx, &d, hws);
+ ide_host_register(host, &d, hws);

#ifdef CONFIG_PMAC_MEDIABAY
- media_bay_set_ide_infos(np->parent, pmif->regbase, pmif->irq, hwif);
+ media_bay_set_ide_infos(np->parent, pmif->regbase, pmif->irq,
+ host->ports[0]);
#endif

return 0;
Index: b/drivers/ide/setup-pci.c
===================================================================
--- a/drivers/ide/setup-pci.c
+++ b/drivers/ide/setup-pci.c
@@ -288,7 +288,7 @@ static int ide_pci_check_iomem(struct pc
}

/**
- * ide_hwif_configure - configure an IDE interface
+ * ide_hw_configure - configure a hw_regs_t instance
* @dev: PCI device holding interface
* @d: IDE port info
* @port: port number
@@ -299,23 +299,20 @@ static int ide_pci_check_iomem(struct pc
* is done per interface port rather than per PCI device. There may be
* more than one port per device.
*
- * Returns the new hardware interface structure, or NULL on a failure
+ * Returns zero on success or an error code.
*/

-static ide_hwif_t *ide_hwif_configure(struct pci_dev *dev,
- const struct ide_port_info *d,
- unsigned int port, int irq,
- hw_regs_t *hw)
+static int ide_hw_configure(struct pci_dev *dev, const struct ide_port_info *d,
+ unsigned int port, int irq, hw_regs_t *hw)
{
unsigned long ctl = 0, base = 0;
- ide_hwif_t *hwif;

if ((d->host_flags & IDE_HFLAG_ISA_PORTS) == 0) {
if (ide_pci_check_iomem(dev, d, 2 * port) ||
ide_pci_check_iomem(dev, d, 2 * port + 1)) {
printk(KERN_ERR "%s: I/O baseregs (BIOS) are reported "
"as MEM for port %d!\n", d->name, port);
- return NULL;
+ return -EINVAL;
}

ctl = pci_resource_start(dev, 2*port+1);
@@ -329,7 +326,7 @@ static ide_hwif_t *ide_hwif_configure(st
if (!base || !ctl) {
printk(KERN_ERR "%s: bad PCI BARs for port %d, skipping\n",
d->name, port);
- return NULL;
+ return -EINVAL;
}

memset(hw, 0, sizeof(*hw));
@@ -338,13 +335,7 @@ static ide_hwif_t *ide_hwif_configure(st
hw->chipset = d->chipset ? d->chipset : ide_pci;
ide_std_init_ports(hw, base, ctl | 2);

- hwif = ide_find_port_slot(d);
- if (hwif == NULL)
- return NULL;
-
- hwif->chipset = hw->chipset;
-
- return hwif;
+ return 0;
}

#ifdef CONFIG_BLK_DEV_IDEDMA_PCI
@@ -442,7 +433,6 @@ out:
* @dev: PCI device
* @d: IDE port info
* @pciirq: IRQ line
- * @idx: ATA index table to update
* @hw: hw_regs_t instances corresponding to this PCI IDE device
* @hws: hw_regs_t pointers table to update
*
@@ -456,10 +446,9 @@ out:
*/

void ide_pci_setup_ports(struct pci_dev *dev, const struct ide_port_info *d,
- int pciirq, u8 *idx, hw_regs_t *hw, hw_regs_t **hws)
+ int pciirq, hw_regs_t *hw, hw_regs_t **hws)
{
int channels = (d->host_flags & IDE_HFLAG_SINGLE) ? 1 : 2, port;
- ide_hwif_t *hwif;
u8 tmp;

/*
@@ -475,12 +464,10 @@ void ide_pci_setup_ports(struct pci_dev
continue; /* port not enabled */
}

- hwif = ide_hwif_configure(dev, d, port, pciirq, hw + port);
- if (hwif == NULL)
+ if (ide_hw_configure(dev, d, port, pciirq, hw + port))
continue;

*(hws + port) = hw + port;
- *(idx + port) = hwif->index;
}
}
EXPORT_SYMBOL_GPL(ide_pci_setup_ports);
@@ -553,7 +540,7 @@ out:

int ide_setup_pci_device(struct pci_dev *dev, const struct ide_port_info *d)
{
- u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
+ struct ide_host *host;
hw_regs_t hw[4], *hws[] = { NULL, NULL, NULL, NULL };
int ret;

@@ -561,9 +548,11 @@ int ide_setup_pci_device(struct pci_dev

if (ret >= 0) {
/* FIXME: silent failure can happen */
- ide_pci_setup_ports(dev, d, ret, &idx[0], &hw[0], &hws[0]);
+ ide_pci_setup_ports(dev, d, ret, &hw[0], &hws[0]);

- ide_device_add(idx, d, hws);
+ host = ide_host_alloc(d, hws);
+ if (host)
+ ide_host_register(host, d, hws);
}

return ret;
@@ -574,9 +563,9 @@ int ide_setup_pci_devices(struct pci_dev
const struct ide_port_info *d)
{
struct pci_dev *pdev[] = { dev1, dev2 };
+ struct ide_host *host;
int ret, i;
hw_regs_t hw[4], *hws[] = { NULL, NULL, NULL, NULL };
- u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };

for (i = 0; i < 2; i++) {
ret = do_ide_setup_pci_device(pdev[i], d, !i);
@@ -589,11 +578,12 @@ int ide_setup_pci_devices(struct pci_dev
goto out;

/* FIXME: silent failure can happen */
- ide_pci_setup_ports(pdev[i], d, ret, &idx[i*2], &hw[i*2],
- &hws[i*2]);
+ ide_pci_setup_ports(pdev[i], d, ret, &hw[i*2], &hws[i*2]);
}

- ide_device_add(idx, d, hws);
+ host = ide_host_alloc(d, hws);
+ if (host)
+ ide_host_register(host, d, hws);
out:
return ret;
}
Index: b/include/linux/ide.h
===================================================================
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -537,6 +537,11 @@ typedef struct hwif_s {
#endif
} ____cacheline_internodealigned_in_smp ide_hwif_t;

+struct ide_host {
+ ide_hwif_t *ports[MAX_HWIFS];
+ unsigned int n_ports;
+};
+
/*
* internal ide interrupt handler type
*/
@@ -795,13 +800,6 @@ int generic_ide_ioctl(ide_drive_t *, str
extern int ide_vlb_clk;
extern int ide_pci_clk;

-ide_hwif_t *ide_find_port_slot(const struct ide_port_info *);
-
-static inline ide_hwif_t *ide_find_port(void)
-{
- return ide_find_port_slot(NULL);
-}
-
extern int ide_end_request (ide_drive_t *drive, int uptodate, int nrsecs);
int ide_end_dequeued_request(ide_drive_t *drive, struct request *rq,
int uptodate, int nr_sectors);
@@ -1010,7 +1008,7 @@ extern int __ide_pci_register_driver(str
#endif

void ide_pci_setup_ports(struct pci_dev *, const struct ide_port_info *, int,
- u8 *, hw_regs_t *, hw_regs_t **);
+ hw_regs_t *, hw_regs_t **);
void ide_setup_pci_noise(struct pci_dev *, const struct ide_port_info *);

#ifdef CONFIG_BLK_DEV_IDEDMA_PCI
@@ -1222,8 +1220,11 @@ void ide_undecoded_slave(ide_drive_t *);

void ide_port_apply_params(ide_hwif_t *);

-int ide_device_add_all(u8 *, const struct ide_port_info *, hw_regs_t **);
-int ide_device_add(u8 *, const struct ide_port_info *, hw_regs_t **);
+struct ide_host *ide_host_alloc_all(const struct ide_port_info *, hw_regs_t **);
+struct ide_host *ide_host_alloc(const struct ide_port_info *, hw_regs_t **);
+int ide_host_register(struct ide_host *, const struct ide_port_info *,
+ hw_regs_t **);
+void ide_host_remove(struct ide_host *);
int ide_legacy_device_add(const struct ide_port_info *, unsigned long);
void ide_port_unregister_devices(ide_hwif_t *);
void ide_port_scan(ide_hwif_t *);