[PATCH 09/50] hpt366: convert to use ->host_priv

Bartlomiej Zolnierkiewicz
2008-07-06T17:38:00Z

[-- Attachment #1: hpt366-convert-to-use-host_priv.patch --]
[-- Type: text/plain, Size: 6539 bytes --]

While at it:

* Allocate both struct hpt_info instances at once.

Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
---
Sergei: we may also consider using only one struct hpt_info instance
for both PCI devices on HPT366 with split PCI config space and HPT374
but I'm leaving this to your judgement.

drivers/ide/pci/hpt366.c | 72 ++++++++++++++++++++++++++---------------------
1 file changed, 41 insertions(+), 31 deletions(-)

Index: b/drivers/ide/pci/hpt366.c
===================================================================
--- a/drivers/ide/pci/hpt366.c
+++ b/drivers/ide/pci/hpt366.c
@@ -620,7 +620,8 @@ static u8 hpt3xx_udma_filter(ide_drive_t
{
ide_hwif_t *hwif = HWIF(drive);
struct pci_dev *dev = to_pci_dev(hwif->dev);
- struct hpt_info *info = pci_get_drvdata(dev);
+ struct ide_host *host = pci_get_drvdata(dev);
+ struct hpt_info *info = host->host_priv + (hwif->dev == host->dev[1]);
u8 mask = hwif->ultra_mask;

switch (info->chip_type) {
@@ -660,7 +661,8 @@ static u8 hpt3xx_mdma_filter(ide_drive_t
{
ide_hwif_t *hwif = HWIF(drive);
struct pci_dev *dev = to_pci_dev(hwif->dev);
- struct hpt_info *info = pci_get_drvdata(dev);
+ struct ide_host *host = pci_get_drvdata(dev);
+ struct hpt_info *info = host->host_priv + (hwif->dev == host->dev[1]);

switch (info->chip_type) {
case HPT372 :
@@ -694,8 +696,10 @@ static u32 get_speed_setting(u8 speed, s

static void hpt3xx_set_mode(ide_drive_t *drive, const u8 speed)
{
- struct pci_dev *dev = to_pci_dev(drive->hwif->dev);
- struct hpt_info *info = pci_get_drvdata(dev);
+ ide_hwif_t *hwif = drive->hwif;
+ struct pci_dev *dev = to_pci_dev(hwif->dev);
+ struct ide_host *host = pci_get_drvdata(dev);
+ struct hpt_info *info = host->host_priv + (hwif->dev == host->dev[1]);
struct hpt_timings *t = info->timings;
u8 itr_addr = 0x40 + (drive->dn * 4);
u32 old_itr = 0;
@@ -738,7 +742,8 @@ static void hpt3xx_maskproc(ide_drive_t
{
ide_hwif_t *hwif = HWIF(drive);
struct pci_dev *dev = to_pci_dev(hwif->dev);
- struct hpt_info *info = pci_get_drvdata(dev);
+ struct ide_host *host = pci_get_drvdata(dev);
+ struct hpt_info *info = host->host_priv + (hwif->dev == host->dev[1]);

if (drive->quirk_list) {
if (info->chip_type >= HPT370) {
@@ -965,22 +970,13 @@ static int __devinit hpt37x_calibrate_dp

static unsigned int __devinit init_chipset_hpt366(struct pci_dev *dev, const char *name)
{
- struct hpt_info *info = kmalloc(sizeof(struct hpt_info), GFP_KERNEL);
unsigned long io_base = pci_resource_start(dev, 4);
+ struct ide_host *host = pci_get_drvdata(dev);
+ struct hpt_info *info = host->host_priv + (&dev->dev == host->dev[1]);
u8 pci_clk, dpll_clk = 0; /* PCI and DPLL clock in MHz */
u8 chip_type;
enum ata_clock clock;

- if (info == NULL) {
- printk(KERN_ERR "%s: out of memory!\n", name);
- return -ENOMEM;
- }
-
- /*
- * Copy everything from a static "template" structure
- * to just allocated per-chip hpt_info structure.
- */
- memcpy(info, pci_get_drvdata(dev), sizeof(struct hpt_info));
chip_type = info->chip_type;

pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE, (L1_CACHE_BYTES / 4));
@@ -1142,7 +1138,6 @@ static unsigned int __devinit init_chips

if (info->timings->clock_table[clock] == NULL) {
printk(KERN_ERR "%s: unknown bus timing!\n", name);
- kfree(info);
return -EIO;
}

@@ -1169,7 +1164,6 @@ static unsigned int __devinit init_chips
}
if (adjust == 8) {
printk(KERN_ERR "%s: DPLL did not stabilize!\n", name);
- kfree(info);
return -EIO;
}

@@ -1186,9 +1180,6 @@ static unsigned int __devinit init_chips
info->pci_clk = pci_clk;
info->clock = clock;

- /* Point to this chip's own instance of the hpt_info structure. */
- pci_set_drvdata(dev, info);
-
if (chip_type >= HPT370) {
u8 mcr1, mcr4;

@@ -1218,7 +1209,8 @@ static unsigned int __devinit init_chips
static u8 __devinit hpt3xx_cable_detect(ide_hwif_t *hwif)
{
struct pci_dev *dev = to_pci_dev(hwif->dev);
- struct hpt_info *info = pci_get_drvdata(dev);
+ struct ide_host *host = pci_get_drvdata(dev);
+ struct hpt_info *info = host->host_priv + (hwif->dev == host->dev[1]);
u8 chip_type = info->chip_type;
u8 scr1 = 0, ata66 = hwif->channel ? 0x01 : 0x02;

@@ -1262,7 +1254,8 @@ static u8 __devinit hpt3xx_cable_detect(
static void __devinit init_hwif_hpt366(ide_hwif_t *hwif)
{
struct pci_dev *dev = to_pci_dev(hwif->dev);
- struct hpt_info *info = pci_get_drvdata(dev);
+ struct ide_host *host = pci_get_drvdata(dev);
+ struct hpt_info *info = host->host_priv + (hwif->dev == host->dev[1]);
int serialize = HPT_SERIALIZE_IO;
u8 chip_type = info->chip_type;
u8 new_mcr, old_mcr = 0;
@@ -1542,10 +1535,12 @@ static const struct ide_port_info hpt366
static int __devinit hpt366_init_one(struct pci_dev *dev, const struct pci_device_id *id)
{
const struct hpt_info *info = NULL;
+ struct hpt_info *dyn_info;
struct pci_dev *dev2 = NULL;
struct ide_port_info d;
u8 idx = id->driver_data;
u8 rev = dev->revision;
+ int ret;

if ((idx == 0 || idx == 4) && (PCI_FUNC(dev->devfn) & 1))
return -ENODEV;
@@ -1591,15 +1586,24 @@ static int __devinit hpt366_init_one(str
if (info == &hpt370 || info == &hpt370a)
d.dma_ops = &hpt370_dma_ops;

- pci_set_drvdata(dev, (void *)info);
-
if (info == &hpt36x || info == &hpt374)
dev2 = pci_get_slot(dev->bus, dev->devfn + 1);

- if (dev2) {
- int ret;
+ dyn_info = kzalloc(sizeof(*dyn_info) * (dev2 ? 2 : 1), GFP_KERNEL);
+ if (dyn_info == NULL) {
+ printk(KERN_ERR "%s: out of memory!\n", d.name);
+ pci_dev_put(dev2);
+ return -ENOMEM;
+ }
+
+ /*
+ * Copy everything from a static "template" structure
+ * to just allocated per-chip hpt_info structure.
+ */
+ memcpy(dyn_info, info, sizeof(*dyn_info));

- pci_set_drvdata(dev2, (void *)info);
+ if (dev2) {
+ memcpy(dyn_info + 1, info, sizeof(*dyn_info));

if (info == &hpt374)
hpt374_init(dev, dev2);
@@ -1608,13 +1612,19 @@ static int __devinit hpt366_init_one(str
d.host_flags &= ~IDE_HFLAG_NON_BOOTABLE;
}

- ret = ide_pci_init_two(dev, dev2, &d, NULL);
- if (ret < 0)
+ ret = ide_pci_init_two(dev, dev2, &d, dyn_info);
+ if (ret < 0) {
pci_dev_put(dev2);
+ kfree(dyn_info);
+ }
return ret;
}

- return ide_pci_init_one(dev, &d, NULL);
+ ret = ide_pci_init_one(dev, &d, dyn_info);
+ if (ret < 0)
+ kfree(dyn_info);
+
+ return ret;
}

static const struct pci_device_id hpt366_pci_tbl[] __devinitconst = {

--