From 18397944642cbca7fcd4a109b43ed5b4652e95b9 Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Fri, 10 Feb 2006 00:08:26 -0800 Subject: [SPARC64]: First cut at SUN4V PCI IOMMU handling. Signed-off-by: David S. Miller --- arch/sparc64/kernel/pci_sun4v_asm.S | 46 ++++++++++++++++++------------------- 1 file changed, 22 insertions(+), 24 deletions(-) (limited to 'arch/sparc64/kernel/pci_sun4v_asm.S') diff --git a/arch/sparc64/kernel/pci_sun4v_asm.S b/arch/sparc64/kernel/pci_sun4v_asm.S index 2f1147146ab..4a12341dd5d 100644 --- a/arch/sparc64/kernel/pci_sun4v_asm.S +++ b/arch/sparc64/kernel/pci_sun4v_asm.S @@ -12,9 +12,7 @@ */ .globl pci_sun4v_devino_to_sysino pci_sun4v_devino_to_sysino: - mov %o1, %o2 - mov %o0, %o1 - mov HV_FAST_INTR_DEVINO2SYSINO, %o0 + mov HV_FAST_INTR_DEVINO2SYSINO, %o5 ta HV_FAST_TRAP retl mov %o1, %o0 @@ -29,12 +27,7 @@ pci_sun4v_devino_to_sysino: */ .globl pci_sun4v_iommu_map pci_sun4v_iommu_map: - mov %o4, %o5 - mov %o3, %o4 - mov %o2, %o3 - mov %o1, %o2 - mov %o0, %o1 - mov HV_FAST_PCI_IOMMU_MAP, %o0 + mov HV_FAST_PCI_IOMMU_MAP, %o5 ta HV_FAST_TRAP retl mov %o1, %o0 @@ -47,14 +40,28 @@ pci_sun4v_iommu_map: */ .globl pci_sun4v_iommu_demap pci_sun4v_iommu_demap: - mov %o2, %o3 - mov %o1, %o2 - mov %o0, %o1 - mov HV_FAST_PCI_IOMMU_DEMAP, %o0 + mov HV_FAST_PCI_IOMMU_DEMAP, %o5 ta HV_FAST_TRAP retl mov %o1, %o0 + /* %o0: devhandle + * %o1: tsbid + * %o2: &io_attributes + * %o3: &real_address + * + * returns %o0: status + */ + .globl pci_sun4v_iommu_getmap +pci_sun4v_iommu_getmap: + mov %o2, %o4 + mov HV_FAST_PCI_IOMMU_GETMAP, %o5 + ta HV_FAST_TRAP + stx %o1, [%o4] + stx %o2, [%o3] + retl + mov %o0, %o0 + /* %o0: devhandle * %o1: pci_device * %o2: pci_config_offset @@ -67,11 +74,7 @@ pci_sun4v_iommu_demap: */ .globl pci_sun4v_config_get pci_sun4v_config_get: - mov %o3, %o4 - mov %o2, %o3 - mov %o1, %o2 - mov %o0, %o1 - mov HV_FAST_PCI_CONFIG_GET, %o0 + mov HV_FAST_PCI_CONFIG_GET, %o5 ta HV_FAST_TRAP brnz,a,pn %o1, 1f mov -1, %o2 @@ -91,14 +94,9 @@ pci_sun4v_config_get: */ .globl pci_sun4v_config_put pci_sun4v_config_put: - mov %o3, %o4 - mov %o2, %o3 - mov %o1, %o2 - mov %o0, %o1 - mov HV_FAST_PCI_CONFIG_PUT, %o0 + mov HV_FAST_PCI_CONFIG_PUT, %o5 ta HV_FAST_TRAP brnz,a,pn %o1, 1f mov -1, %o1 1: retl mov %o1, %o0 - -- cgit v1.2.3