From 56f5c0bd50e948408ac0fd587b5c89fa7e2a1b6e Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Tue, 12 Jun 2007 16:54:08 -0700 Subject: [PATCH] [SPARC64]: Fix IO/MEM space sizing for PCI. In pci_determine_mem_io_space(), do not hard code the region sizes. Instead, use the values given to us in the ranges property. Thanks goes to Mikael Petterson for the original Xorg failure bug repoert, and strace dumps from Mikael and Dmitry Artamonow. Signed-off-by: David S. Miller --- arch/sparc64/kernel/pci_common.c | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) diff --git a/arch/sparc64/kernel/pci_common.c b/arch/sparc64/kernel/pci_common.c index f974fefc3eb..4249214608a 100644 --- a/arch/sparc64/kernel/pci_common.c +++ b/arch/sparc64/kernel/pci_common.c @@ -291,8 +291,9 @@ void pci_determine_mem_io_space(struct pci_pbm_info *pbm) for (i = 0; i < num_pbm_ranges; i++) { const struct linux_prom_pci_ranges *pr = &pbm_ranges[i]; - unsigned long a; + unsigned long a, size; u32 parent_phys_hi, parent_phys_lo; + u32 size_hi, size_lo; int type; parent_phys_hi = pr->parent_phys_hi; @@ -300,9 +301,14 @@ void pci_determine_mem_io_space(struct pci_pbm_info *pbm) if (tlb_type == hypervisor) parent_phys_hi &= 0x0fffffff; + size_hi = pr->size_hi; + size_lo = pr->size_lo; + type = (pr->child_phys_hi >> 24) & 0x3; a = (((unsigned long)parent_phys_hi << 32UL) | ((unsigned long)parent_phys_lo << 0UL)); + size = (((unsigned long)size_hi << 32UL) | + ((unsigned long)size_lo << 0UL)); switch (type) { case 0: @@ -313,7 +319,7 @@ void pci_determine_mem_io_space(struct pci_pbm_info *pbm) case 1: /* 16-bit IO space, 16MB */ pbm->io_space.start = a; - pbm->io_space.end = a + ((16UL*1024UL*1024UL) - 1UL); + pbm->io_space.end = a + size - 1UL; pbm->io_space.flags = IORESOURCE_IO; saw_io = 1; break; @@ -321,7 +327,7 @@ void pci_determine_mem_io_space(struct pci_pbm_info *pbm) case 2: /* 32-bit MEM space, 2GB */ pbm->mem_space.start = a; - pbm->mem_space.end = a + (0x80000000UL - 1UL); + pbm->mem_space.end = a + size - 1UL; pbm->mem_space.flags = IORESOURCE_MEM; saw_mem = 1; break; -- 2.41.0