[SPARC64]: Beginnings of SUN4V PCI controller support.
Abstract out IOMMU operations so that we can have a different
set of calls on sun4v, which needs to do things through
hypervisor calls.
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/arch/sparc64/kernel/Makefile b/arch/sparc64/kernel/Makefile
index a482a9f..4404339 100644
--- a/arch/sparc64/kernel/Makefile
+++ b/arch/sparc64/kernel/Makefile
@@ -14,7 +14,7 @@
power.o sbus.o iommu_common.o sparc64_ksyms.o chmc.o
obj-$(CONFIG_PCI) += ebus.o isa.o pci_common.o pci_iommu.o \
- pci_psycho.o pci_sabre.o pci_schizo.o
+ pci_psycho.o pci_sabre.o pci_schizo.o pci_sun4v.o
obj-$(CONFIG_SMP) += smp.o trampoline.o
obj-$(CONFIG_SPARC32_COMPAT) += sys32.o sys_sparc32.o signal32.o
obj-$(CONFIG_BINFMT_ELF32) += binfmt_elf32.o
diff --git a/arch/sparc64/kernel/pci.c b/arch/sparc64/kernel/pci.c
index 2ff7c32..95ffa94 100644
--- a/arch/sparc64/kernel/pci.c
+++ b/arch/sparc64/kernel/pci.c
@@ -188,6 +188,7 @@
extern void schizo_init(int, char *);
extern void schizo_plus_init(int, char *);
extern void tomatillo_init(int, char *);
+extern void sun4v_pci_init(int, char *);
static struct {
char *model_name;
@@ -204,6 +205,7 @@
{ "pci108e,8002", schizo_plus_init },
{ "SUNW,tomatillo", tomatillo_init },
{ "pci108e,a801", tomatillo_init },
+ { "SUNW,sun4v-pci", sun4v_pci_init },
};
#define PCI_NUM_CONTROLLER_TYPES (sizeof(pci_controller_table) / \
sizeof(pci_controller_table[0]))
@@ -283,6 +285,12 @@
return pci_controller_scan(pci_is_controller);
}
+struct pci_iommu_ops *pci_iommu_ops;
+EXPORT_SYMBOL(pci_iommu_ops);
+
+extern struct pci_iommu_ops pci_sun4u_iommu_ops,
+ pci_sun4v_iommu_ops;
+
/* Find each controller in the system, attach and initialize
* software state structure for each and link into the
* pci_controller_root. Setup the controller enough such
@@ -290,6 +298,11 @@
*/
static void __init pci_controller_probe(void)
{
+ if (tlb_type == hypervisor)
+ pci_iommu_ops = &pci_sun4v_iommu_ops;
+ else
+ pci_iommu_ops = &pci_sun4u_iommu_ops;
+
printk("PCI: Probing for controllers.\n");
pci_controller_scan(pci_controller_init);
diff --git a/arch/sparc64/kernel/pci_iommu.c b/arch/sparc64/kernel/pci_iommu.c
index a11910b..8e52232 100644
--- a/arch/sparc64/kernel/pci_iommu.c
+++ b/arch/sparc64/kernel/pci_iommu.c
@@ -219,7 +219,7 @@
* DMA for PCI device PDEV. Return non-NULL cpu-side address if
* successful and set *DMA_ADDRP to the PCI side dma address.
*/
-void *pci_alloc_consistent(struct pci_dev *pdev, size_t size, dma_addr_t *dma_addrp)
+static void *pci_4u_alloc_consistent(struct pci_dev *pdev, size_t size, dma_addr_t *dma_addrp)
{
struct pcidev_cookie *pcp;
struct pci_iommu *iommu;
@@ -267,7 +267,7 @@
}
/* Free and unmap a consistent DMA translation. */
-void pci_free_consistent(struct pci_dev *pdev, size_t size, void *cpu, dma_addr_t dvma)
+static void pci_4u_free_consistent(struct pci_dev *pdev, size_t size, void *cpu, dma_addr_t dvma)
{
struct pcidev_cookie *pcp;
struct pci_iommu *iommu;
@@ -294,7 +294,7 @@
/* Map a single buffer at PTR of SZ bytes for PCI DMA
* in streaming mode.
*/
-dma_addr_t pci_map_single(struct pci_dev *pdev, void *ptr, size_t sz, int direction)
+static dma_addr_t pci_4u_map_single(struct pci_dev *pdev, void *ptr, size_t sz, int direction)
{
struct pcidev_cookie *pcp;
struct pci_iommu *iommu;
@@ -415,7 +415,7 @@
}
/* Unmap a single streaming mode DMA translation. */
-void pci_unmap_single(struct pci_dev *pdev, dma_addr_t bus_addr, size_t sz, int direction)
+static void pci_4u_unmap_single(struct pci_dev *pdev, dma_addr_t bus_addr, size_t sz, int direction)
{
struct pcidev_cookie *pcp;
struct pci_iommu *iommu;
@@ -548,7 +548,7 @@
* When making changes here, inspect the assembly output. I was having
* hard time to kepp this routine out of using stack slots for holding variables.
*/
-int pci_map_sg(struct pci_dev *pdev, struct scatterlist *sglist, int nelems, int direction)
+static int pci_4u_map_sg(struct pci_dev *pdev, struct scatterlist *sglist, int nelems, int direction)
{
struct pcidev_cookie *pcp;
struct pci_iommu *iommu;
@@ -635,7 +635,7 @@
}
/* Unmap a set of streaming mode DMA translations. */
-void pci_unmap_sg(struct pci_dev *pdev, struct scatterlist *sglist, int nelems, int direction)
+static void pci_4u_unmap_sg(struct pci_dev *pdev, struct scatterlist *sglist, int nelems, int direction)
{
struct pcidev_cookie *pcp;
struct pci_iommu *iommu;
@@ -695,7 +695,7 @@
/* Make physical memory consistent for a single
* streaming mode DMA translation after a transfer.
*/
-void pci_dma_sync_single_for_cpu(struct pci_dev *pdev, dma_addr_t bus_addr, size_t sz, int direction)
+static void pci_4u_dma_sync_single_for_cpu(struct pci_dev *pdev, dma_addr_t bus_addr, size_t sz, int direction)
{
struct pcidev_cookie *pcp;
struct pci_iommu *iommu;
@@ -735,7 +735,7 @@
/* Make physical memory consistent for a set of streaming
* mode DMA translations after a transfer.
*/
-void pci_dma_sync_sg_for_cpu(struct pci_dev *pdev, struct scatterlist *sglist, int nelems, int direction)
+static void pci_4u_dma_sync_sg_for_cpu(struct pci_dev *pdev, struct scatterlist *sglist, int nelems, int direction)
{
struct pcidev_cookie *pcp;
struct pci_iommu *iommu;
@@ -776,6 +776,17 @@
spin_unlock_irqrestore(&iommu->lock, flags);
}
+struct pci_iommu_ops pci_sun4u_iommu_ops = {
+ .alloc_consistent = pci_4u_alloc_consistent,
+ .free_consistent = pci_4u_free_consistent,
+ .map_single = pci_4u_map_single,
+ .unmap_single = pci_4u_unmap_single,
+ .map_sg = pci_4u_map_sg,
+ .unmap_sg = pci_4u_unmap_sg,
+ .dma_sync_single_for_cpu = pci_4u_dma_sync_single_for_cpu,
+ .dma_sync_sg_for_cpu = pci_4u_dma_sync_sg_for_cpu,
+};
+
static void ali_sound_dma_hack(struct pci_dev *pdev, int set_bit)
{
struct pci_dev *ali_isa_bridge;
diff --git a/arch/sparc64/kernel/pci_sun4v.c b/arch/sparc64/kernel/pci_sun4v.c
new file mode 100644
index 0000000..c1a0771
--- /dev/null
+++ b/arch/sparc64/kernel/pci_sun4v.c
@@ -0,0 +1,74 @@
+/* pci_sun4v.c: SUN4V specific PCI controller support.
+ *
+ * Copyright (C) 2006 David S. Miller (davem@davemloft.net)
+ */
+
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/pci.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/interrupt.h>
+
+#include <asm/pbm.h>
+#include <asm/iommu.h>
+#include <asm/irq.h>
+#include <asm/upa.h>
+#include <asm/pstate.h>
+#include <asm/oplib.h>
+#include <asm/hypervisor.h>
+
+#include "pci_impl.h"
+#include "iommu_common.h"
+
+static void *pci_4v_alloc_consistent(struct pci_dev *pdev, size_t size, dma_addr_t *dma_addrp)
+{
+ return NULL;
+}
+
+static void pci_4v_free_consistent(struct pci_dev *pdev, size_t size, void *cpu, dma_addr_t dvma)
+{
+}
+
+static dma_addr_t pci_4v_map_single(struct pci_dev *pdev, void *ptr, size_t sz, int direction)
+{
+ return 0;
+}
+
+static void pci_4v_unmap_single(struct pci_dev *pdev, dma_addr_t bus_addr, size_t sz, int direction)
+{
+}
+
+static int pci_4v_map_sg(struct pci_dev *pdev, struct scatterlist *sglist, int nelems, int direction)
+{
+ return nelems;
+}
+
+static void pci_4v_unmap_sg(struct pci_dev *pdev, struct scatterlist *sglist, int nelems, int direction)
+{
+}
+
+static void pci_4v_dma_sync_single_for_cpu(struct pci_dev *pdev, dma_addr_t bus_addr, size_t sz, int direction)
+{
+}
+
+static void pci_4v_dma_sync_sg_for_cpu(struct pci_dev *pdev, struct scatterlist *sglist, int nelems, int direction)
+{
+}
+
+struct pci_iommu_ops pci_sun4v_iommu_ops = {
+ .alloc_consistent = pci_4v_alloc_consistent,
+ .free_consistent = pci_4v_free_consistent,
+ .map_single = pci_4v_map_single,
+ .unmap_single = pci_4v_unmap_single,
+ .map_sg = pci_4v_map_sg,
+ .unmap_sg = pci_4v_unmap_sg,
+ .dma_sync_single_for_cpu = pci_4v_dma_sync_single_for_cpu,
+ .dma_sync_sg_for_cpu = pci_4v_dma_sync_sg_for_cpu,
+};
+
+void sun4v_pci_init(int node, char *model_name)
+{
+ prom_printf("sun4v_pci_init: Implement me.\n");
+ prom_halt();
+}