: MIPS: PCI: Add pre_enable hook, minor readability fixes
PATCH v3 1/1 : MIPS: PCI: Add pre_enable hook, minor readability fixes
From: Joshua Kinard <[email protected]>
This patch adds a hook, "pre_enable", to the core MIPS PCI code. It is used by the IP30 Port to setup the PCI resources prior to probing the BRIDGE and detecting available PCI devices. It also adds some minor whitespace to improve readability.
Signed-off-by Joshua Kinard <[email protected]>
--- arch/mips/include/asm/pci.h | 3 +++ arch/mips/pci/pci.c | 10 ++++++++-- 2 files changed, 11 insertions(+), 2 deletions(-)
This version is diff'ed against the post-4.2/pre-4.3 tree.
linux-mips-pci-pre_enable.patch
arch/mips/include/asm/pci.h +3 -0
@@ -43,6 +43,9 @@ struct pci_controller {and XFree86. Eventually will be removed. */ unsigned int need_domain_info; +/* called in pcibios_enable_resources */ +int (*pre_enable)(struct pci_controller *,struct pci_dev *,int ); +int iommu;/* Optional access methods for reading/writing the bus number
arch/mips/pci/pci.c +8 -2
@@ -261,14 +261,19 @@ static int pcibios_enable_resources(struct pci_dev *dev, int mask)u16 cmd, old_cmd;int idx;struct resource *r; +struct pci_controller *hose = (struct pci_controller *)dev->sysdata;pci_read_config_word (dev,PCI_COMMAND , &cmd); old_cmd = cmd; -for (idx=0 ; idx <PCI_NUM_RESOURCES ; idx++) { +for (idx =0 ; idx <PCI_NUM_RESOURCES ; idx++) {/* Only set up the requested stuff */ -if (!(mask & (1 <<idx))) +if (!(mask & (1 << idx)))continue ; +if (hose->pre_enable) +if (hose->pre_enable (hose, dev, idx) <0 ) +return -EINVAL ; + r = &dev->resource[idx];if (!(r->flags & (IORESOURCE_IO |IORESOURCE_MEM )))continue ;
@@ -291,6 +296,7 @@ static int pcibios_enable_resources(struct pci_dev *dev, int mask) pci_name(dev), old_cmd, cmd);pci_write_config_word (dev,PCI_COMMAND , cmd); } +return 0 ; }