From 3f7565c957c14e4600d471791fca8e534c1ad0b7 Mon Sep 17 00:00:00 2001 From: Benjamin Herrenschmidt Date: Wed, 11 Jan 2012 19:46:25 +0000 Subject: [PATCH] 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 Signed-off-by: David Gibson Signed-off-by: Alexander Graf --- hw/spapr_pci.c | 14 ++++++++++---- 1 file 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;