diff options
| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2012-01-11 19:46:25 +0000 |
|---|---|---|
| committer | Alexander Graf <agraf@suse.de> | 2012-01-21 05:17:02 +0100 |
| commit | 3f7565c957c14e4600d471791fca8e534c1ad0b7 (patch) | |
| tree | 8f2486c95a8648f93c6b1a21c1f0914708eac353 | |
| parent | 964455f39ed540e5968ec3000a3fb3d8fb20823c (diff) | |
pseries: Support PCI extended config space in RTAS calls
On the pseries machine (which expexts a paravirtualized guest), guest
access to PCI config space is via host-provided RTAS functions. This
patch extends these RTAS functions to permit access to PCI extended
config space, as specified in PAPR.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
| -rw-r--r-- | hw/spapr_pci.c | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/hw/spapr_pci.c b/hw/spapr_pci.c index 9b6a032cce..2550e197c8 100644 --- a/hw/spapr_pci.c +++ b/hw/spapr_pci.c @@ -62,6 +62,11 @@ static PCIDevice *find_dev(sPAPREnvironment *spapr, return NULL; } +static uint32_t rtas_pci_cfgaddr(uint32_t arg) +{ + return ((arg >> 20) & 0xf00) | (arg & 0xff); +} + static void rtas_ibm_read_pci_config(sPAPREnvironment *spapr, uint32_t token, uint32_t nargs, target_ulong args, @@ -76,7 +81,7 @@ static void rtas_ibm_read_pci_config(sPAPREnvironment *spapr, return; } size = rtas_ld(args, 3); - addr = rtas_ld(args, 0) & 0xFF; + addr = rtas_pci_cfgaddr(rtas_ld(args, 0)); val = pci_default_read_config(dev, addr, size); rtas_st(rets, 0, 0); rtas_st(rets, 1, val); @@ -95,7 +100,7 @@ static void rtas_read_pci_config(sPAPREnvironment *spapr, return; } size = rtas_ld(args, 1); - addr = rtas_ld(args, 0) & 0xFF; + addr = rtas_pci_cfgaddr(rtas_ld(args, 0)); val = pci_default_read_config(dev, addr, size); rtas_st(rets, 0, 0); rtas_st(rets, 1, val); @@ -116,7 +121,7 @@ static void rtas_ibm_write_pci_config(sPAPREnvironment *spapr, } val = rtas_ld(args, 4); size = rtas_ld(args, 3); - addr = rtas_ld(args, 0) & 0xFF; + addr = rtas_pci_cfgaddr(rtas_ld(args, 0)); pci_default_write_config(dev, addr, val, size); rtas_st(rets, 0, 0); } @@ -135,7 +140,7 @@ static void rtas_write_pci_config(sPAPREnvironment *spapr, } val = rtas_ld(args, 2); size = rtas_ld(args, 1); - addr = rtas_ld(args, 0) & 0xFF; + addr = rtas_pci_cfgaddr(rtas_ld(args, 0)); pci_default_write_config(dev, addr, val, size); rtas_st(rets, 0, 0); } @@ -394,6 +399,7 @@ int spapr_populate_pci_devices(sPAPRPHBState *phb, _FDT(fdt_setprop(fdt, bus_off, "reg", &bus_reg, sizeof(bus_reg))); _FDT(fdt_setprop(fdt, bus_off, "interrupt-map-mask", &interrupt_map_mask, sizeof(interrupt_map_mask))); + _FDT(fdt_setprop_cell(fdt, bus_off, "ibm,pci-config-space-type", 0x1)); /* Populate PCI devices and allocate IRQs */ devices = 0; |