diff options
author | Brett M Russ <russb@emc.com> | 2005-08-15 15:23:41 -0400 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@suse.de> | 2005-09-08 15:07:08 -0700 |
commit | a04ce0ffcaf561994ecf382cd3caad75556dc499 (patch) | |
tree | e891a767810333fe2bf29ddb35f57b0a3ec6e18e /drivers | |
parent | 3fe9d19f9e86a55679f5f2b38ec0a43a1a510cee (diff) | |
download | linux-stable-a04ce0ffcaf561994ecf382cd3caad75556dc499.tar.gz linux-stable-a04ce0ffcaf561994ecf382cd3caad75556dc499.tar.bz2 linux-stable-a04ce0ffcaf561994ecf382cd3caad75556dc499.zip |
[PATCH] PCI/libata INTx cleanup
Simple cleanup to eliminate X copies of the pci_enable_intx() function
in libata. Moved ahci.c's pci_intx() to pci.c and use it throughout
libata and msi.c.
Signed-off-by: Brett Russ <russb@emc.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/pci/msi.c | 10 | ||||
-rw-r--r-- | drivers/pci/pci.c | 26 | ||||
-rw-r--r-- | drivers/scsi/ahci.c | 16 | ||||
-rw-r--r-- | drivers/scsi/ata_piix.c | 14 | ||||
-rw-r--r-- | drivers/scsi/sata_sis.c | 14 | ||||
-rw-r--r-- | drivers/scsi/sata_uli.c | 14 |
6 files changed, 31 insertions, 63 deletions
diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c index 532f73bb2224..ee8677bda950 100644 --- a/drivers/pci/msi.c +++ b/drivers/pci/msi.c @@ -439,10 +439,7 @@ static void enable_msi_mode(struct pci_dev *dev, int pos, int type) } if (pci_find_capability(dev, PCI_CAP_ID_EXP)) { /* PCI Express Endpoint device detected */ - u16 cmd; - pci_read_config_word(dev, PCI_COMMAND, &cmd); - cmd |= PCI_COMMAND_INTX_DISABLE; - pci_write_config_word(dev, PCI_COMMAND, cmd); + pci_intx(dev, 0); /* disable intx */ } } @@ -461,10 +458,7 @@ void disable_msi_mode(struct pci_dev *dev, int pos, int type) } if (pci_find_capability(dev, PCI_CAP_ID_EXP)) { /* PCI Express Endpoint device detected */ - u16 cmd; - pci_read_config_word(dev, PCI_COMMAND, &cmd); - cmd &= ~PCI_COMMAND_INTX_DISABLE; - pci_write_config_word(dev, PCI_COMMAND, cmd); + pci_intx(dev, 1); /* enable intx */ } } diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index e179af3186f5..ccff633a3948 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -798,6 +798,31 @@ pci_clear_mwi(struct pci_dev *dev) } } +/** + * pci_intx - enables/disables PCI INTx for device dev + * @dev: the PCI device to operate on + * @enable: boolean + * + * Enables/disables PCI INTx for device dev + */ +void +pci_intx(struct pci_dev *pdev, int enable) +{ + u16 pci_command, new; + + pci_read_config_word(pdev, PCI_COMMAND, &pci_command); + + if (enable) { + new = pci_command & ~PCI_COMMAND_INTX_DISABLE; + } else { + new = pci_command | PCI_COMMAND_INTX_DISABLE; + } + + if (new != pci_command) { + pci_write_config_word(pdev, PCI_COMMAND, pci_command); + } +} + #ifndef HAVE_ARCH_PCI_SET_DMA_MASK /* * These can be overridden by arch-specific implementations @@ -875,6 +900,7 @@ EXPORT_SYMBOL(pci_request_region); EXPORT_SYMBOL(pci_set_master); EXPORT_SYMBOL(pci_set_mwi); EXPORT_SYMBOL(pci_clear_mwi); +EXPORT_SYMBOL_GPL(pci_intx); EXPORT_SYMBOL(pci_set_dma_mask); EXPORT_SYMBOL(pci_set_consistent_dma_mask); EXPORT_SYMBOL(pci_assign_resource); diff --git a/drivers/scsi/ahci.c b/drivers/scsi/ahci.c index 320df6cd3def..c2c8fa828e24 100644 --- a/drivers/scsi/ahci.c +++ b/drivers/scsi/ahci.c @@ -865,22 +865,6 @@ static int ahci_host_init(struct ata_probe_ent *probe_ent) return 0; } -/* move to PCI layer, integrate w/ MSI stuff */ -static void pci_intx(struct pci_dev *pdev, int enable) -{ - u16 pci_command, new; - - pci_read_config_word(pdev, PCI_COMMAND, &pci_command); - - if (enable) - new = pci_command & ~PCI_COMMAND_INTX_DISABLE; - else - new = pci_command | PCI_COMMAND_INTX_DISABLE; - - if (new != pci_command) - pci_write_config_word(pdev, PCI_COMMAND, pci_command); -} - static void ahci_print_info(struct ata_probe_ent *probe_ent) { struct ahci_host_priv *hpriv = probe_ent->private_data; diff --git a/drivers/scsi/ata_piix.c b/drivers/scsi/ata_piix.c index 5f8688529041..87e0c36f1554 100644 --- a/drivers/scsi/ata_piix.c +++ b/drivers/scsi/ata_piix.c @@ -568,18 +568,6 @@ static void piix_set_dmamode (struct ata_port *ap, struct ata_device *adev) } } -/* move to PCI layer, integrate w/ MSI stuff */ -static void pci_enable_intx(struct pci_dev *pdev) -{ - u16 pci_command; - - pci_read_config_word(pdev, PCI_COMMAND, &pci_command); - if (pci_command & PCI_COMMAND_INTX_DISABLE) { - pci_command &= ~PCI_COMMAND_INTX_DISABLE; - pci_write_config_word(pdev, PCI_COMMAND, pci_command); - } -} - #define AHCI_PCI_BAR 5 #define AHCI_GLOBAL_CTL 0x04 #define AHCI_ENABLE (1 << 31) @@ -677,7 +665,7 @@ static int piix_init_one (struct pci_dev *pdev, const struct pci_device_id *ent) * message-signalled interrupts currently). */ if (port_info[0]->host_flags & PIIX_FLAG_CHECKINTR) - pci_enable_intx(pdev); + pci_intx(pdev, 1); if (combined) { port_info[sata_chan] = &piix_port_info[ent->driver_data]; diff --git a/drivers/scsi/sata_sis.c b/drivers/scsi/sata_sis.c index 7d1aaa99aaae..2bd3f11ac010 100644 --- a/drivers/scsi/sata_sis.c +++ b/drivers/scsi/sata_sis.c @@ -233,18 +233,6 @@ static void sis_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val) } } -/* move to PCI layer, integrate w/ MSI stuff */ -static void pci_enable_intx(struct pci_dev *pdev) -{ - u16 pci_command; - - pci_read_config_word(pdev, PCI_COMMAND, &pci_command); - if (pci_command & PCI_COMMAND_INTX_DISABLE) { - pci_command &= ~PCI_COMMAND_INTX_DISABLE; - pci_write_config_word(pdev, PCI_COMMAND, pci_command); - } -} - static int sis_init_one (struct pci_dev *pdev, const struct pci_device_id *ent) { struct ata_probe_ent *probe_ent = NULL; @@ -319,7 +307,7 @@ static int sis_init_one (struct pci_dev *pdev, const struct pci_device_id *ent) } pci_set_master(pdev); - pci_enable_intx(pdev); + pci_intx(pdev, 1); /* FIXME: check ata_device_add return value */ ata_device_add(probe_ent); diff --git a/drivers/scsi/sata_uli.c b/drivers/scsi/sata_uli.c index 42e13ed8eb5b..4c9fb8b71be1 100644 --- a/drivers/scsi/sata_uli.c +++ b/drivers/scsi/sata_uli.c @@ -176,18 +176,6 @@ static void uli_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val) uli_scr_cfg_write(ap, sc_reg, val); } -/* move to PCI layer, integrate w/ MSI stuff */ -static void pci_enable_intx(struct pci_dev *pdev) -{ - u16 pci_command; - - pci_read_config_word(pdev, PCI_COMMAND, &pci_command); - if (pci_command & PCI_COMMAND_INTX_DISABLE) { - pci_command &= ~PCI_COMMAND_INTX_DISABLE; - pci_write_config_word(pdev, PCI_COMMAND, pci_command); - } -} - static int uli_init_one (struct pci_dev *pdev, const struct pci_device_id *ent) { struct ata_probe_ent *probe_ent; @@ -260,7 +248,7 @@ static int uli_init_one (struct pci_dev *pdev, const struct pci_device_id *ent) } pci_set_master(pdev); - pci_enable_intx(pdev); + pci_intx(pdev, 1); /* FIXME: check ata_device_add return value */ ata_device_add(probe_ent); |