Add a common setup function that determines the pci_region(s) based on how much memory we have in the system.
Signed-off-by: Kumar Gala galak@kernel.crashing.org --- drivers/pci/fsl_pci_init.c | 81 ++++++++++++++++++++++++++++++++++++++++++++ 1 files changed, 81 insertions(+), 0 deletions(-)
diff --git a/drivers/pci/fsl_pci_init.c b/drivers/pci/fsl_pci_init.c index f41c8aa..564459c 100644 --- a/drivers/pci/fsl_pci_init.c +++ b/drivers/pci/fsl_pci_init.c @@ -18,6 +18,8 @@
#include <common.h>
+DECLARE_GLOBAL_DATA_PTR; + /* * PCI/PCIE Controller initialization for mpc85xx/mpc86xx soc's * @@ -41,6 +43,85 @@ void pciauto_postscan_setup_bridge(struct pci_controller *hose, pci_dev_t dev, int sub_bus); void pciauto_config_init(struct pci_controller *hose);
+#ifndef CONFIG_SYS_PCI_MEMORY_BUS +#define CONFIG_SYS_PCI_MEMORY_BUS 0 +#endif + +#ifndef CONFIG_SYS_PCI_MEMORY_PHYS +#define CONFIG_SYS_PCI_MEMORY_PHYS 0 +#endif + +#if defined(CONFIG_SYS_PCI_64BIT) && !defined(CONFIG_SYS_PCI64_MEMORY_BUS) +#define CONFIG_SYS_PCI64_MEMORY_BUS (64ull*1024*1024*1024) +#endif + +int fsl_pci_setup_inbound_windows(struct pci_region *r) +{ + struct pci_region *rgn_base = r; + u64 sz = min((u64)gd->ram_size, 1ull << 32); + + phys_addr_t phys_start = CONFIG_SYS_PCI_MEMORY_PHYS; + pci_addr_t bus_start = CONFIG_SYS_PCI_MEMORY_BUS; + pci_size_t pci_sz = 1ull << __ilog2_u64(sz); + + debug ("R0 bus_start: %llx phys_start: %llx size: %llx\n", + (u64)bus_start, (u64)phys_start, (u64)pci_sz); + pci_set_region(r++, bus_start, phys_start, pci_sz, + PCI_REGION_MEM | PCI_REGION_MEMORY | \ + PCI_REGION_PREFETCH); + + sz -= pci_sz; + bus_start += pci_sz; + phys_start += pci_sz; + + pci_sz = 1ull << __ilog2_u64(sz); + if (sz) { + debug ("R1 bus_start: %llx phys_start: %llx size: %llx\n", + (u64)bus_start, (u64)phys_start, (u64)pci_sz); + pci_set_region(r++, bus_start, phys_start, pci_sz, + PCI_REGION_MEM | PCI_REGION_MEMORY | \ + PCI_REGION_PREFETCH); + sz -= pci_sz; + bus_start += pci_sz; + phys_start += pci_sz; + } + +#if defined(CONFIG_PHYS_64BIT) && defined(CONFIG_SYS_PCI_64BIT) + pci_sz = 1ull << __ilog2_u64(gd->ram_size); + /* round up to the next largest power of two */ + if (gd->ram_size > pci_sz) + sz = 1ull << (__ilog2_u64(gd->ram_size) + 1); + debug ("R64 bus_start: %llx phys_start: %llx size: %llx\n", + (u64)CONFIG_SYS_PCI_MEMORY_BUS, + (u64)CONFIG_SYS_PCI_MEMORY_PHYS, + (u64)pci_sz); + pci_set_region(r++, + CONFIG_SYS_PCI_MEMORY_BUS, + CONFIG_SYS_PCI_MEMORY_PHYS, + pci_sz, + PCI_REGION_MEM | PCI_REGION_MEMORY | \ + PCI_REGION_PREFETCH); +#else + pci_sz = 1ull << __ilog2_u64(sz); + if (sz) { + debug ("R2 bus_start: %llx phys_start: %llx size: %llx\n", + (u64)bus_start, (u64)phys_start, (u64)pci_sz); + pci_set_region(r++, bus_start, phys_start, pci_sz, + PCI_REGION_MEM | PCI_REGION_MEMORY | \ + PCI_REGION_PREFETCH); + sz -= pci_sz; + bus_start += pci_sz; + phys_start += pci_sz; + } +#endif + + if (sz && (((u64)gd->ram_size) < (1ull << 32))) + printf("Was not able to map all of memory via " + "inbound windows -- %lld remaining\n", sz); + + return r - rgn_base; +} + void fsl_pci_init(struct pci_controller *hose) { u16 temp16;