[SPARC64]: Convert PCI over to generic struct iommu/strbuf.

Signed-off-by: David S. Miller <davem@davemloft.net>

6 files changed, 66 insertions, 144 deletions

diff --git a/arch/sparc64/kernel/pci_iommu.c b/arch/sparc64/kernel/pci_iommu.c
index 355ed0ba937a..66712772f494 100644
--- a/arch/sparc64/kernel/pci_iommu.c
+++ b/arch/sparc64/kernel/pci_iommu.c
@@ -1,7 +1,6 @@
-/* $Id: pci_iommu.c,v 1.17 2001/12/17 07:05:09 davem Exp $
- * pci_iommu.c: UltraSparc PCI controller IOM/STC support.
+/* pci_iommu.c: UltraSparc PCI controller IOM/STC support.
  *
- * Copyright (C) 1999 David S. Miller (davem@redhat.com)
+ * Copyright (C) 1999, 2007 David S. Miller (davem@davemloft.net)
  * Copyright (C) 1999, 2000 Jakub Jelinek (jakub@redhat.com)
  */
 
@@ -36,7 +35,7 @@
                                "i" (ASI_PHYS_BYPASS_EC_E))
 
 /* Must be invoked under the IOMMU lock. */
-static void __iommu_flushall(struct pci_iommu *iommu)
+static void __iommu_flushall(struct iommu *iommu)
 {
         unsigned long tag;
         int entry;
@@ -64,7 +63,7 @@ static void __iommu_flushall(struct pci_iommu *iommu)
 #define IOPTE_IS_DUMMY(iommu, iopte)    \
         ((iopte_val(*iopte) & IOPTE_PAGE) == (iommu)->dummy_page_pa)
 
-static inline void iopte_make_dummy(struct pci_iommu *iommu, iopte_t *iopte)
+static inline void iopte_make_dummy(struct iommu *iommu, iopte_t *iopte)
 {
         unsigned long val = iopte_val(*iopte);
 
@@ -75,7 +74,7 @@ static inline void iopte_make_dummy(struct pci_iommu *iommu, iopte_t *iopte)
 }
 
 /* Based largely upon the ppc64 iommu allocator.  */
-static long pci_arena_alloc(struct pci_iommu *iommu, unsigned long npages)
+static long pci_arena_alloc(struct iommu *iommu, unsigned long npages)
 {
         struct iommu_arena *arena = &iommu->arena;
         unsigned long n, i, start, end, limit;
@@ -124,7 +123,7 @@ static void pci_arena_free(struct iommu_arena *arena, unsigned long base, unsign
                 __clear_bit(i, arena->map);
 }
 
-void pci_iommu_table_init(struct pci_iommu *iommu, int tsbsize, u32 dma_offset, u32 dma_addr_mask)
+void pci_iommu_table_init(struct iommu *iommu, int tsbsize, u32 dma_offset, u32 dma_addr_mask)
 {
         unsigned long i, tsbbase, order, sz, num_tsb_entries;
 
@@ -170,7 +169,7 @@ void pci_iommu_table_init(struct pci_iommu *iommu, int tsbsize, u32 dma_offset,
                 iopte_make_dummy(iommu, &iommu->page_table[i]);
 }
 
-static inline iopte_t *alloc_npages(struct pci_iommu *iommu, unsigned long npages)
+static inline iopte_t *alloc_npages(struct iommu *iommu, unsigned long npages)
 {
         long entry;
 
@@ -181,12 +180,12 @@ static inline iopte_t *alloc_npages(struct pci_iommu *iommu, unsigned long npage
         return iommu->page_table + entry;
 }
 
-static inline void free_npages(struct pci_iommu *iommu, dma_addr_t base, unsigned long npages)
+static inline void free_npages(struct iommu *iommu, dma_addr_t base, unsigned long npages)
 {
         pci_arena_free(&iommu->arena, base >> IO_PAGE_SHIFT, npages);
 }
 
-static int iommu_alloc_ctx(struct pci_iommu *iommu)
+static int iommu_alloc_ctx(struct iommu *iommu)
 {
         int lowest = iommu->ctx_lowest_free;
         int sz = IOMMU_NUM_CTXS - lowest;
@@ -205,7 +204,7 @@ static int iommu_alloc_ctx(struct pci_iommu *iommu)
         return n;
 }
 
-static inline void iommu_free_ctx(struct pci_iommu *iommu, int ctx)
+static inline void iommu_free_ctx(struct iommu *iommu, int ctx)
 {
         if (likely(ctx)) {
                 __clear_bit(ctx, iommu->ctx_bitmap);
@@ -220,7 +219,7 @@ static inline void iommu_free_ctx(struct pci_iommu *iommu, int ctx)
  */
 static void *pci_4u_alloc_consistent(struct pci_dev *pdev, size_t size, dma_addr_t *dma_addrp, gfp_t gfp)
 {
-        struct pci_iommu *iommu;
+        struct iommu *iommu;
         iopte_t *iopte;
         unsigned long flags, order, first_page;
         void *ret;
@@ -266,7 +265,7 @@ static void *pci_4u_alloc_consistent(struct pci_dev *pdev, size_t size, dma_addr
 /* Free and unmap a consistent DMA translation. */
 static void pci_4u_free_consistent(struct pci_dev *pdev, size_t size, void *cpu, dma_addr_t dvma)
 {
-        struct pci_iommu *iommu;
+        struct iommu *iommu;
         iopte_t *iopte;
         unsigned long flags, order, npages;
 
@@ -291,8 +290,8 @@ static void pci_4u_free_consistent(struct pci_dev *pdev, size_t size, void *cpu,
  */
 static dma_addr_t pci_4u_map_single(struct pci_dev *pdev, void *ptr, size_t sz, int direction)
 {
-        struct pci_iommu *iommu;
-        struct pci_strbuf *strbuf;
+        struct iommu *iommu;
+        struct strbuf *strbuf;
         iopte_t *base;
         unsigned long flags, npages, oaddr;
         unsigned long i, base_paddr, ctx;
@@ -343,7 +342,7 @@ bad_no_ctx:
         return PCI_DMA_ERROR_CODE;
 }
 
-static void pci_strbuf_flush(struct pci_strbuf *strbuf, struct pci_iommu *iommu, u32 vaddr, unsigned long ctx, unsigned long npages, int direction)
+static void pci_strbuf_flush(struct strbuf *strbuf, struct iommu *iommu, u32 vaddr, unsigned long ctx, unsigned long npages, int direction)
 {
         int limit;
 
@@ -410,8 +409,8 @@ do_flush_sync:
 /* Unmap a single streaming mode DMA translation. */
 static void pci_4u_unmap_single(struct pci_dev *pdev, dma_addr_t bus_addr, size_t sz, int direction)
 {
-        struct pci_iommu *iommu;
-        struct pci_strbuf *strbuf;
+        struct iommu *iommu;
+        struct strbuf *strbuf;
         iopte_t *base;
         unsigned long flags, npages, ctx, i;
 
@@ -541,8 +540,8 @@ static inline void fill_sg(iopte_t *iopte, struct scatterlist *sg,
  */
 static int pci_4u_map_sg(struct pci_dev *pdev, struct scatterlist *sglist, int nelems, int direction)
 {
-        struct pci_iommu *iommu;
-        struct pci_strbuf *strbuf;
+        struct iommu *iommu;
+        struct strbuf *strbuf;
         unsigned long flags, ctx, npages, iopte_protection;
         iopte_t *base;
         u32 dma_base;
@@ -626,8 +625,8 @@ bad_no_ctx:
 /* Unmap a set of streaming mode DMA translations. */
 static void pci_4u_unmap_sg(struct pci_dev *pdev, struct scatterlist *sglist, int nelems, int direction)
 {
-        struct pci_iommu *iommu;
-        struct pci_strbuf *strbuf;
+        struct iommu *iommu;
+        struct strbuf *strbuf;
         iopte_t *base;
         unsigned long flags, ctx, i, npages;
         u32 bus_addr;
@@ -684,8 +683,8 @@ static void pci_4u_unmap_sg(struct pci_dev *pdev, struct scatterlist *sglist, in
  */
 static void pci_4u_dma_sync_single_for_cpu(struct pci_dev *pdev, dma_addr_t bus_addr, size_t sz, int direction)
 {
-        struct pci_iommu *iommu;
-        struct pci_strbuf *strbuf;
+        struct iommu *iommu;
+        struct strbuf *strbuf;
         unsigned long flags, ctx, npages;
 
         iommu = pdev->dev.archdata.iommu;
@@ -722,8 +721,8 @@ static void pci_4u_dma_sync_single_for_cpu(struct pci_dev *pdev, dma_addr_t bus_
  */
 static void pci_4u_dma_sync_sg_for_cpu(struct pci_dev *pdev, struct scatterlist *sglist, int nelems, int direction)
 {
-        struct pci_iommu *iommu;
-        struct pci_strbuf *strbuf;
+        struct iommu *iommu;
+        struct strbuf *strbuf;
         unsigned long flags, ctx, npages, i;
         u32 bus_addr;
 
@@ -798,7 +797,7 @@ int pci_dma_supported(struct pci_dev *pdev, u64 device_mask)
         if (pdev == NULL) {
                 dma_addr_mask = 0xffffffff;
         } else {
-                struct pci_iommu *iommu = pdev->dev.archdata.iommu;
+                struct iommu *iommu = pdev->dev.archdata.iommu;
 
                 dma_addr_mask = iommu->dma_addr_mask;
 
diff --git a/arch/sparc64/kernel/pci_psycho.c b/arch/sparc64/kernel/pci_psycho.c
index 3725910c8b2b..253d40ec2245 100644
--- a/arch/sparc64/kernel/pci_psycho.c
+++ b/arch/sparc64/kernel/pci_psycho.c
@@ -269,7 +269,7 @@ static void __psycho_check_one_stc(struct pci_controller_info *p,
                                    struct pci_pbm_info *pbm,
                                    int is_pbm_a)
 {
-        struct pci_strbuf *strbuf = &pbm->stc;
+        struct strbuf *strbuf = &pbm->stc;
         unsigned long regbase = p->pbm_A.controller_regs;
         unsigned long err_base, tag_base, line_base;
         u64 control;
@@ -418,7 +418,7 @@ static void psycho_check_iommu_error(struct pci_controller_info *p,
                                      unsigned long afar,
                                      enum psycho_error_type type)
 {
-        struct pci_iommu *iommu = p->pbm_A.iommu;
+        struct iommu *iommu = p->pbm_A.iommu;
         unsigned long iommu_tag[16];
         unsigned long iommu_data[16];
         unsigned long flags;
@@ -941,7 +941,7 @@ static void psycho_scan_bus(struct pci_controller_info *p)
 
 static void psycho_iommu_init(struct pci_controller_info *p)
 {
-        struct pci_iommu *iommu = p->pbm_A.iommu;
+        struct iommu *iommu = p->pbm_A.iommu;
         unsigned long i;
         u64 control;
 
@@ -1131,7 +1131,7 @@ void psycho_init(struct device_node *dp, char *model_name)
 {
         struct linux_prom64_registers *pr_regs;
         struct pci_controller_info *p;
-        struct pci_iommu *iommu;
+        struct iommu *iommu;
         struct property *prop;
         u32 upa_portid;
         int is_pbm_a;
@@ -1154,7 +1154,7 @@ void psycho_init(struct device_node *dp, char *model_name)
                 prom_printf("PSYCHO: Fatal memory allocation error.\n");
                 prom_halt();
         }
-        iommu = kzalloc(sizeof(struct pci_iommu), GFP_ATOMIC);
+        iommu = kzalloc(sizeof(struct iommu), GFP_ATOMIC);
         if (!iommu) {
                 prom_printf("PSYCHO: Fatal memory allocation error.\n");
                 prom_halt();
diff --git a/arch/sparc64/kernel/pci_sabre.c b/arch/sparc64/kernel/pci_sabre.c
index 9a2ce0637c80..397862fbd9e1 100644
--- a/arch/sparc64/kernel/pci_sabre.c
+++ b/arch/sparc64/kernel/pci_sabre.c
@@ -1,7 +1,6 @@
-/* $Id: pci_sabre.c,v 1.42 2002/01/23 11:27:32 davem Exp $
- * pci_sabre.c: Sabre specific PCI controller support.
+/* pci_sabre.c: Sabre specific PCI controller support.
  *
- * Copyright (C) 1997, 1998, 1999 David S. Miller (davem@caipfs.rutgers.edu)
+ * Copyright (C) 1997, 1998, 1999, 2007 David S. Miller (davem@davemloft.net)
  * Copyright (C) 1998, 1999 Eddie C. Dost   (ecd@skynet.be)
  * Copyright (C) 1999 Jakub Jelinek   (jakub@redhat.com)
  */
@@ -499,7 +498,7 @@ static void sabre_check_iommu_error(struct pci_controller_info *p,
                                     unsigned long afsr,
                                     unsigned long afar)
 {
-        struct pci_iommu *iommu = p->pbm_A.iommu;
+        struct iommu *iommu = p->pbm_A.iommu;
         unsigned long iommu_tag[16];
         unsigned long iommu_data[16];
         unsigned long flags;
@@ -948,7 +947,7 @@ static void sabre_iommu_init(struct pci_controller_info *p,
                              int tsbsize, unsigned long dvma_offset,
                              u32 dma_mask)
 {
-        struct pci_iommu *iommu = p->pbm_A.iommu;
+        struct iommu *iommu = p->pbm_A.iommu;
         unsigned long i;
         u64 control;
 
@@ -1017,7 +1016,7 @@ void sabre_init(struct device_node *dp, char *model_name)
 {
         const struct linux_prom64_registers *pr_regs;
         struct pci_controller_info *p;
-        struct pci_iommu *iommu;
+        struct iommu *iommu;
         int tsbsize;
         const u32 *busrange;
         const u32 *vdma;
diff --git a/arch/sparc64/kernel/pci_schizo.c b/arch/sparc64/kernel/pci_schizo.c
index 47a5aa94dcae..91a7385e5d32 100644
--- a/arch/sparc64/kernel/pci_schizo.c
+++ b/arch/sparc64/kernel/pci_schizo.c
@@ -279,7 +279,7 @@ struct pci_pbm_info *pbm_for_ino(struct pci_controller_info *p, u32 ino)
 static void __schizo_check_stc_error_pbm(struct pci_pbm_info *pbm,
                                          enum schizo_error_type type)
 {
-        struct pci_strbuf *strbuf = &pbm->stc;
+        struct strbuf *strbuf = &pbm->stc;
         unsigned long regbase = pbm->pbm_regs;
         unsigned long err_base, tag_base, line_base;
         u64 control;
@@ -387,7 +387,7 @@ static void __schizo_check_stc_error_pbm(struct pci_pbm_info *pbm,
 static void schizo_check_iommu_error_pbm(struct pci_pbm_info *pbm,
                                          enum schizo_error_type type)
 {
-        struct pci_iommu *iommu = pbm->iommu;
+        struct iommu *iommu = pbm->iommu;
         unsigned long iommu_tag[16];
         unsigned long iommu_data[16];
         unsigned long flags;
@@ -1308,7 +1308,7 @@ static void schizo_pbm_strbuf_init(struct pci_pbm_info *pbm)
 
 static void schizo_pbm_iommu_init(struct pci_pbm_info *pbm)
 {
-        struct pci_iommu *iommu = pbm->iommu;
+        struct iommu *iommu = pbm->iommu;
         unsigned long i, tagbase, database;
         struct property *prop;
         u32 vdma[2], dma_mask;
@@ -1580,7 +1580,7 @@ static inline int portid_compare(u32 x, u32 y, int chip_type)
 static void __schizo_init(struct device_node *dp, char *model_name, int chip_type)
 {
         struct pci_controller_info *p;
-        struct pci_iommu *iommu;
+        struct iommu *iommu;
         u32 portid;
 
         portid = of_getintprop_default(dp, "portid", 0xff);
@@ -1605,13 +1605,13 @@ static void __schizo_init(struct device_node *dp, char *model_name, int chip_typ
         if (!p)
                 goto memfail;
 
-        iommu = kzalloc(sizeof(struct pci_iommu), GFP_ATOMIC);
+        iommu = kzalloc(sizeof(struct iommu), GFP_ATOMIC);
         if (!iommu)
                 goto memfail;
 
         p->pbm_A.iommu = iommu;
 
-        iommu = kzalloc(sizeof(struct pci_iommu), GFP_ATOMIC);
+        iommu = kzalloc(sizeof(struct iommu), GFP_ATOMIC);
         if (!iommu)
                 goto memfail;
 
diff --git a/arch/sparc64/kernel/pci_sun4v.c b/arch/sparc64/kernel/pci_sun4v.c
index 0e99808f2121..94295c219329 100644
--- a/arch/sparc64/kernel/pci_sun4v.c
+++ b/arch/sparc64/kernel/pci_sun4v.c
@@ -29,7 +29,7 @@
 
 #define PGLIST_NENTS    (PAGE_SIZE / sizeof(u64))
 
-struct pci_iommu_batch {
+struct iommu_batch {
         struct pci_dev  *pdev;          /* Device mapping is for.       */
         unsigned long   prot;           /* IOMMU page protections       */
         unsigned long   entry;          /* Index into IOTSB.            */
@@ -37,12 +37,12 @@ struct pci_iommu_batch {
         unsigned long   npages;         /* Number of pages in list.     */
 };
 
-static DEFINE_PER_CPU(struct pci_iommu_batch, pci_iommu_batch);
+static DEFINE_PER_CPU(struct iommu_batch, pci_iommu_batch);
 
 /* Interrupts must be disabled.  */
 static inline void pci_iommu_batch_start(struct pci_dev *pdev, unsigned long prot, unsigned long entry)
 {
-        struct pci_iommu_batch *p = &__get_cpu_var(pci_iommu_batch);
+        struct iommu_batch *p = &__get_cpu_var(pci_iommu_batch);
 
         p->pdev         = pdev;
         p->prot         = prot;
@@ -51,7 +51,7 @@ static inline void pci_iommu_batch_start(struct pci_dev *pdev, unsigned long pro
 }
 
 /* Interrupts must be disabled.  */
-static long pci_iommu_batch_flush(struct pci_iommu_batch *p)
+static long pci_iommu_batch_flush(struct iommu_batch *p)
 {
         struct pci_pbm_info *pbm = p->pdev->dev.archdata.host_controller;
         unsigned long devhandle = pbm->devhandle;
@@ -89,7 +89,7 @@ static long pci_iommu_batch_flush(struct pci_iommu_batch *p)
 /* Interrupts must be disabled.  */
 static inline long pci_iommu_batch_add(u64 phys_page)
 {
-        struct pci_iommu_batch *p = &__get_cpu_var(pci_iommu_batch);
+        struct iommu_batch *p = &__get_cpu_var(pci_iommu_batch);
 
         BUG_ON(p->npages >= PGLIST_NENTS);
 
@@ -103,7 +103,7 @@ static inline long pci_iommu_batch_add(u64 phys_page)
 /* Interrupts must be disabled.  */
 static inline long pci_iommu_batch_end(void)
 {
-        struct pci_iommu_batch *p = &__get_cpu_var(pci_iommu_batch);
+        struct iommu_batch *p = &__get_cpu_var(pci_iommu_batch);
 
         BUG_ON(p->npages >= PGLIST_NENTS);
 
@@ -159,7 +159,7 @@ static void pci_arena_free(struct iommu_arena *arena, unsigned long base, unsign
 
 static void *pci_4v_alloc_consistent(struct pci_dev *pdev, size_t size, dma_addr_t *dma_addrp, gfp_t gfp)
 {
-        struct pci_iommu *iommu;
+        struct iommu *iommu;
         unsigned long flags, order, first_page, npages, n;
         void *ret;
         long entry;
@@ -225,7 +225,7 @@ arena_alloc_fail:
 static void pci_4v_free_consistent(struct pci_dev *pdev, size_t size, void *cpu, dma_addr_t dvma)
 {
         struct pci_pbm_info *pbm;
-        struct pci_iommu *iommu;
+        struct iommu *iommu;
         unsigned long flags, order, npages, entry;
         u32 devhandle;
 
@@ -257,7 +257,7 @@ static void pci_4v_free_consistent(struct pci_dev *pdev, size_t size, void *cpu,
 
 static dma_addr_t pci_4v_map_single(struct pci_dev *pdev, void *ptr, size_t sz, int direction)
 {
-        struct pci_iommu *iommu;
+        struct iommu *iommu;
         unsigned long flags, npages, oaddr;
         unsigned long i, base_paddr;
         u32 bus_addr, ret;
@@ -321,7 +321,7 @@ iommu_map_fail:
 static void pci_4v_unmap_single(struct pci_dev *pdev, dma_addr_t bus_addr, size_t sz, int direction)
 {
         struct pci_pbm_info *pbm;
-        struct pci_iommu *iommu;
+        struct iommu *iommu;
         unsigned long flags, npages;
         long entry;
         u32 devhandle;
@@ -456,7 +456,7 @@ iommu_map_failed:
 
 static int pci_4v_map_sg(struct pci_dev *pdev, struct scatterlist *sglist, int nelems, int direction)
 {
-        struct pci_iommu *iommu;
+        struct iommu *iommu;
         unsigned long flags, npages, prot;
         u32 dma_base;
         struct scatterlist *sgtmp;
@@ -532,7 +532,7 @@ iommu_map_failed:
 static void pci_4v_unmap_sg(struct pci_dev *pdev, struct scatterlist *sglist, int nelems, int direction)
 {
         struct pci_pbm_info *pbm;
-        struct pci_iommu *iommu;
+        struct iommu *iommu;
         unsigned long flags, i, npages;
         long entry;
         u32 devhandle, bus_addr;
@@ -705,7 +705,7 @@ static void pci_sun4v_scan_bus(struct pci_controller_info *p)
 }
 
 static unsigned long probe_existing_entries(struct pci_pbm_info *pbm,
-                                            struct pci_iommu *iommu)
+                                            struct iommu *iommu)
 {
         struct iommu_arena *arena = &iommu->arena;
         unsigned long i, cnt = 0;
@@ -734,7 +734,7 @@ static unsigned long probe_existing_entries(struct pci_pbm_info *pbm,
 
 static void pci_sun4v_iommu_init(struct pci_pbm_info *pbm)
 {
-        struct pci_iommu *iommu = pbm->iommu;
+        struct iommu *iommu = pbm->iommu;
         struct property *prop;
         unsigned long num_tsb_entries, sz;
         u32 vdma[2], dma_mask, dma_offset;
@@ -1279,7 +1279,7 @@ static void pci_sun4v_pbm_init(struct pci_controller_info *p, struct device_node
 void sun4v_pci_init(struct device_node *dp, char *model_name)
 {
         struct pci_controller_info *p;
-        struct pci_iommu *iommu;
+        struct iommu *iommu;
         struct property *prop;
         struct linux_prom64_registers *regs;
         u32 devhandle;
@@ -1319,13 +1319,13 @@ void sun4v_pci_init(struct device_node *dp, char *model_name)
         if (!p)
                 goto fatal_memory_error;
 
-        iommu = kzalloc(sizeof(struct pci_iommu), GFP_ATOMIC);
+        iommu = kzalloc(sizeof(struct iommu), GFP_ATOMIC);
         if (!iommu)
                 goto fatal_memory_error;
 
         p->pbm_A.iommu = iommu;
 
-        iommu = kzalloc(sizeof(struct pci_iommu), GFP_ATOMIC);
+        iommu = kzalloc(sizeof(struct iommu), GFP_ATOMIC);
         if (!iommu)
                 goto fatal_memory_error;
 
diff --git a/include/asm-sparc64/pbm.h b/include/asm-sparc64/pbm.h
index 4a0ed2ea950c..c008cecca149 100644
--- a/include/asm-sparc64/pbm.h
+++ b/include/asm-sparc64/pbm.h
@@ -1,7 +1,6 @@
-/* $Id: pbm.h,v 1.27 2001/08/12 13:18:23 davem Exp $
- * pbm.h: UltraSparc PCI controller software state.
+/* pbm.h: UltraSparc PCI controller software state.
  *
- * Copyright (C) 1997, 1998, 1999 David S. Miller (davem@redhat.com)
+ * Copyright (C) 1997, 1998, 1999, 2007 David S. Miller (davem@davemloft.net)
  */
 
 #ifndef __SPARC64_PBM_H
@@ -30,84 +29,7 @@
  * PCI bus.
  */
 
-struct pci_controller_info;
-
-/* This contains the software state necessary to drive a PCI
- * controller's IOMMU.
- */
-struct pci_iommu {
-        /* This protects the controller's IOMMU and all
-         * streaming buffers underneath.
-         */
-        spinlock_t      lock;
-
-        struct iommu_arena arena;
-
-        /* IOMMU page table, a linear array of ioptes. */
-        iopte_t         *page_table;            /* The page table itself. */
-
-        /* Base PCI memory space address where IOMMU mappings
-         * begin.
-         */
-        u32             page_table_map_base;
-
-        /* IOMMU Controller Registers */
-        unsigned long   iommu_control;          /* IOMMU control register */
-        unsigned long   iommu_tsbbase;          /* IOMMU page table base register */
-        unsigned long   iommu_flush;            /* IOMMU page flush register */
-        unsigned long   iommu_ctxflush;         /* IOMMU context flush register */
-
-        /* This is a register in the PCI controller, which if
-         * read will have no side-effects but will guarantee
-         * completion of all previous writes into IOMMU/STC.
-         */
-        unsigned long   write_complete_reg;
-
-        /* In order to deal with some buggy third-party PCI bridges that
-         * do wrong prefetching, we never mark valid mappings as invalid.
-         * Instead we point them at this dummy page.
-         */
-        unsigned long   dummy_page;
-        unsigned long   dummy_page_pa;
-
-        /* CTX allocation. */
-        unsigned long ctx_lowest_free;
-        DECLARE_BITMAP(ctx_bitmap, IOMMU_NUM_CTXS);
-
-        /* Here a PCI controller driver describes the areas of
-         * PCI memory space where DMA to/from physical memory
-         * are addressed.  Drivers interrogate the PCI layer
-         * if their device has addressing limitations.  They
-         * do so via pci_dma_supported, and pass in a mask of
-         * DMA address bits their device can actually drive.
-         *
-         * The test for being usable is:
-         *      (device_mask & dma_addr_mask) == dma_addr_mask
-         */
-        u32 dma_addr_mask;
-};
-
-extern void pci_iommu_table_init(struct pci_iommu *iommu, int tsbsize, u32 dma_offset, u32 dma_addr_mask);
-
-/* This describes a PCI bus module's streaming buffer. */
-struct pci_strbuf {
-        int             strbuf_enabled;         /* Present and using it? */
-
-        /* Streaming Buffer Control Registers */
-        unsigned long   strbuf_control;         /* STC control register */
-        unsigned long   strbuf_pflush;          /* STC page flush register */
-        unsigned long   strbuf_fsync;           /* STC flush synchronization reg */
-        unsigned long   strbuf_ctxflush;        /* STC context flush register */
-        unsigned long   strbuf_ctxmatch_base;   /* STC context flush match reg */
-        unsigned long   strbuf_flushflag_pa;    /* Physical address of flush flag */
-        volatile unsigned long *strbuf_flushflag; /* The flush flag itself */
-
-        /* And this is the actual flush flag area.
-         * We allocate extra because the chips require
-         * a 64-byte aligned area.
-         */
-        volatile unsigned long  __flushflag_buf[(64 + (64 - 1)) / sizeof(long)];
-};
+extern void pci_iommu_table_init(struct iommu *iommu, int tsbsize, u32 dma_offset, u32 dma_addr_mask);
 
 #define PCI_STC_FLUSHFLAG_INIT(STC) \
         (*((STC)->strbuf_flushflag) = 0UL)
@@ -120,6 +42,8 @@ struct pci_strbuf {
 #define PROM_PCIRNG_MAX         64
 #define PROM_PCIIMAP_MAX        64
 
+struct pci_controller_info;
+
 struct pci_pbm_info {
         /* PCI controller we sit under. */
         struct pci_controller_info      *parent;
@@ -186,10 +110,10 @@ struct pci_pbm_info {
 #endif /* !(CONFIG_PCI_MSI) */
 
         /* This PBM's streaming buffer. */
-        struct pci_strbuf               stc;
+        struct strbuf                   stc;
 
         /* IOMMU state, potentially shared by both PBM segments. */
-        struct pci_iommu                *iommu;
+        struct iommu                    *iommu;
 
         /* Now things for the actual PCI bus probes. */
         unsigned int                    pci_first_busno;