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ahci: Factor out PCI specifics from ahci_save_initial_config() 

Make ahci_save_initial_config() a bit more generic by introducing
force_port_map and mask_port_map arguments.

Move PCI stuff into ahci_pci_save_initial_config().

Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
This commit is contained in:
Anton Vorontsov 2010-03-03 20:17:36 +03:00 committed by Jeff Garzik
parent d89933497d
commit 394d6e535f
1 changed files with 42 additions and 24 deletions
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66
drivers/ata/ahci.c
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@ -842,6 +842,8 @@ static ssize_t ahci_show_port_cmd(struct device *dev,
* ahci_save_initial_config - Save and fixup initial config values
* @pdev: target PCI device
* @hpriv: host private area to store config values
* @force_port_map: force port map to a specified value
* @mask_port_map: mask out particular bits from port map
*
* Some registers containing configuration info might be setup by
* BIOS and might be cleared on reset. This function saves the
@ -854,12 +856,13 @@ static ssize_t ahci_show_port_cmd(struct device *dev,
* None.
*/
static void ahci_save_initial_config(struct pci_dev *pdev,
struct ahci_host_priv *hpriv)
struct ahci_host_priv *hpriv,
unsigned int force_port_map,
unsigned int mask_port_map)
{
void __iomem *mmio = hpriv->mmio;
u32 cap, cap2, vers, port_map;
int i;
int mv;
/* make sure AHCI mode is enabled before accessing CAP */
ahci_enable_ahci(mmio);
@ -909,32 +912,19 @@ static void ahci_save_initial_config(struct pci_dev *pdev,
cap &= ~HOST_CAP_SNTF;
}
if (pdev->vendor == PCI_VENDOR_ID_JMICRON && pdev->device == 0x2361 &&
port_map != 1) {
if (force_port_map && port_map != force_port_map) {
dev_printk(KERN_INFO, &pdev->dev,
"JMB361 has only one port, port_map 0x%x -> 0x%x\n",
port_map, 1);
port_map = 1;
"forcing port_map 0x%x -> 0x%x\n",
port_map, force_port_map);
port_map = force_port_map;
}
/*
* Temporary Marvell 6145 hack: PATA port presence
* is asserted through the standard AHCI port
* presence register, as bit 4 (counting from 0)
*/
if (hpriv->flags & AHCI_HFLAG_MV_PATA) {
if (pdev->device == 0x6121)
mv = 0x3;
else
mv = 0xf;
if (mask_port_map) {
dev_printk(KERN_ERR, &pdev->dev,
"MV_AHCI HACK: port_map %x -> %x\n",
"masking port_map 0x%x -> 0x%x\n",
port_map,
port_map & mv);
dev_printk(KERN_ERR, &pdev->dev,
"Disabling your PATA port. Use the boot option 'ahci.marvell_enable=0' to avoid this.\n");
port_map &= mv;
port_map & mask_port_map);
port_map &= mask_port_map;
}
/* cross check port_map and cap.n_ports */
@ -973,6 +963,34 @@ static void ahci_save_initial_config(struct pci_dev *pdev,
hpriv->port_map = port_map;
}
static void ahci_pci_save_initial_config(struct pci_dev *pdev,
struct ahci_host_priv *hpriv)
{
unsigned int force_port_map = 0;
unsigned int mask_port_map = 0;
if (pdev->vendor == PCI_VENDOR_ID_JMICRON && pdev->device == 0x2361) {
dev_info(&pdev->dev, "JMB361 has only one port\n");
force_port_map = 1;
}
/*
* Temporary Marvell 6145 hack: PATA port presence
* is asserted through the standard AHCI port
* presence register, as bit 4 (counting from 0)
*/
if (hpriv->flags & AHCI_HFLAG_MV_PATA) {
if (pdev->device == 0x6121)
mask_port_map = 0x3;
else
mask_port_map = 0xf;
dev_info(&pdev->dev,
"Disabling your PATA port. Use the boot option 'ahci.marvell_enable=0' to avoid this.\n");
}
ahci_save_initial_config(pdev, hpriv, force_port_map, mask_port_map);
}
/**
* ahci_restore_initial_config - Restore initial config
* @host: target ATA host
@ -3316,7 +3334,7 @@ static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
hpriv->mmio = pcim_iomap_table(pdev)[AHCI_PCI_BAR];
/* save initial config */
ahci_save_initial_config(pdev, hpriv);
ahci_pci_save_initial_config(pdev, hpriv);
/* prepare host */
if (hpriv->cap & HOST_CAP_NCQ) {