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powerpc/fsl-pci Make PCIe hotplug work with Freescale PCIe controllers

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Up to now the PCIe link status on Freescale PCIe controllers was only
checked once at boot time. So hotplug did not work. With this patch the
link status is checked on every config read. PCIe devices not present at
boot time are found after doing 'echo 1 >/sys/bus/pci/rescan'.

Signed-off-by: Rojhalat Ibrahim <imr@rtschenk.de>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
This commit is contained in:
Rojhalat Ibrahim
2013-04-08 10:15:28 +02:00
committed by Kumar Gala
parent 34642bbb3d
commit 50d8f87d2b
3 changed files with 54 additions and 13 deletions
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6
arch/powerpc/include/asm/pci-bridge.h
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@@ -120,6 +120,12 @@ extern void setup_indirect_pci(struct pci_controller* hose,
resource_size_t cfg_addr,
resource_size_t cfg_data, u32 flags);
extern int indirect_read_config(struct pci_bus *bus, unsigned int devfn,
int offset, int len, u32 *val);
extern int indirect_write_config(struct pci_bus *bus, unsigned int devfn,
int offset, int len, u32 val);
static inline struct pci_controller *pci_bus_to_host(const struct pci_bus *bus)
{
return bus->sysdata;