[PATCH] v850: Update PCI support
From: Miles Bader
Date: Thu Jul 21 2005 - 05:28:27 EST
These changes are untested (I no longer have the hardware).
Signed-off-by: Miles Bader <miles@xxxxxxx>
arch/v850/kernel/rte_mb_a_pci.c | 37 +++++++++++++++++++++++++++++++------
arch/v850/kernel/vmlinux.lds.S | 14 ++++++++++++++
include/asm-v850/pci.h | 37 +++++++++++++++++++++++++++++++------
3 files changed, 76 insertions(+), 12 deletions(-)
diff -ruN -X../cludes linux-2.6.12-uc0/arch/v850/kernel/rte_mb_a_pci.c linux-2.6.12-uc0-v850-20050721/arch/v850/kernel/rte_mb_a_pci.c
--- linux-2.6.12-uc0/arch/v850/kernel/rte_mb_a_pci.c 2005-03-04 11:31:28.597101000 +0900
+++ linux-2.6.12-uc0-v850-20050721/arch/v850/kernel/rte_mb_a_pci.c 2005-07-21 18:45:49.496213000 +0900
@@ -1,8 +1,8 @@
/*
* arch/v850/kernel/mb_a_pci.c -- PCI support for Midas lab RTE-MOTHER-A board
*
- * Copyright (C) 2001,02,03 NEC Electronics Corporation
- * Copyright (C) 2001,02,03 Miles Bader <miles@xxxxxxx>
+ * Copyright (C) 2001,02,03,05 NEC Electronics Corporation
+ * Copyright (C) 2001,02,03,05 Miles Bader <miles@xxxxxxx>
*
* This file is subject to the terms and conditions of the GNU General
* Public License. See the file COPYING in the main directory of this
@@ -743,15 +743,17 @@
for a scatter-gather list, same rules and usage. */
void
-pci_dma_sync_sg_for_cpu (struct pci_dev *dev, struct scatterlist *sg, int sg_len,
- int dir)
+pci_dma_sync_sg_for_cpu (struct pci_dev *dev,
+ struct scatterlist *sg, int sg_len,
+ int dir)
{
BUG ();
}
void
-pci_dma_sync_sg_for_device (struct pci_dev *dev, struct scatterlist *sg, int sg_len,
- int dir)
+pci_dma_sync_sg_for_device (struct pci_dev *dev,
+ struct scatterlist *sg, int sg_len,
+ int dir)
{
BUG ();
}
@@ -786,6 +788,27 @@
}
+/* iomap/iomap */
+
+void __iomem *pci_iomap (struct pci_dev *dev, int bar, unsigned long max)
+{
+ unsigned long start = pci_resource_start (dev, bar);
+ unsigned long len = pci_resource_len (dev, bar);
+
+ if (!start || len == 0)
+ return 0;
+
+ /* None of the ioremap functions actually do anything, other than
+ re-casting their argument, so don't bother differentiating them. */
+ return ioremap (start, len);
+}
+
+void pci_iounmap (struct pci_dev *dev, void __iomem *addr)
+{
+ /* nothing */
+}
+
+
/* symbol exports (for modules) */
EXPORT_SYMBOL (pci_map_single);
@@ -794,3 +817,5 @@
EXPORT_SYMBOL (pci_free_consistent);
EXPORT_SYMBOL (pci_dma_sync_single_for_cpu);
EXPORT_SYMBOL (pci_dma_sync_single_for_device);
+EXPORT_SYMBOL (pci_iomap);
+EXPORT_SYMBOL (pci_iounmap);
diff -ruN -X../cludes linux-2.6.12-uc0/arch/v850/kernel/vmlinux.lds.S linux-2.6.12-uc0-v850-20050721/arch/v850/kernel/vmlinux.lds.S
--- linux-2.6.12-uc0/arch/v850/kernel/vmlinux.lds.S 2004-12-27 11:26:17.694361000 +0900
+++ linux-2.6.12-uc0-v850-20050721/arch/v850/kernel/vmlinux.lds.S 2005-07-21 18:27:09.415864000 +0900
@@ -12,6 +12,7 @@
*/
#include <linux/config.h>
+
#define VMLINUX_SYMBOL(_sym_) _##_sym_
#include <asm-generic/vmlinux.lds.h>
@@ -42,6 +43,19 @@
*(.rodata) *(.rodata.*) \
*(__vermagic) /* Kernel version magic */ \
*(.rodata1) \
+ /* PCI quirks */ \
+ ___start_pci_fixups_early = . ; \
+ *(.pci_fixup_early) \
+ ___end_pci_fixups_early = . ; \
+ ___start_pci_fixups_header = . ; \
+ *(.pci_fixup_header) \
+ ___end_pci_fixups_header = . ; \
+ ___start_pci_fixups_final = . ; \
+ *(.pci_fixup_final) \
+ ___end_pci_fixups_final = . ; \
+ ___start_pci_fixups_enable = . ; \
+ *(.pci_fixup_enable) \
+ ___end_pci_fixups_enable = . ; \
/* Kernel symbol table: Normal symbols */ \
___start___ksymtab = .; \
*(__ksymtab) \
diff -ruN -X../cludes linux-2.6.12-uc0/include/asm-v850/pci.h linux-2.6.12-uc0-v850-20050721/include/asm-v850/pci.h
--- linux-2.6.12-uc0/include/asm-v850/pci.h 2004-04-05 11:34:01.719157000 +0900
+++ linux-2.6.12-uc0-v850-20050721/include/asm-v850/pci.h 2005-07-21 18:54:55.951640000 +0900
@@ -1,8 +1,8 @@
/*
* include/asm-v850/pci.h -- PCI support
*
- * Copyright (C) 2001,02 NEC Corporation
- * Copyright (C) 2001,02 Miles Bader <miles@xxxxxxx>
+ * Copyright (C) 2001,02,05 NEC Corporation
+ * Copyright (C) 2001,02,05 Miles Bader <miles@xxxxxxx>
*
* This file is subject to the terms and conditions of the GNU General
* Public License. See the file COPYING in the main directory of this
@@ -48,12 +48,12 @@
perform a pci_dma_sync_for_device, and then the device again owns
the buffer. */
extern void
-pci_dma_sync_single_for_cpu (struct pci_dev *dev, dma_addr_t dma_addr, size_t size,
- int dir);
+pci_dma_sync_single_for_cpu (struct pci_dev *dev, dma_addr_t dma_addr,
+ size_t size, int dir);
extern void
-pci_dma_sync_single_for_device (struct pci_dev *dev, dma_addr_t dma_addr, size_t size,
- int dir);
+pci_dma_sync_single_for_device (struct pci_dev *dev, dma_addr_t dma_addr,
+ size_t size, int dir);
/* Do multiple DMA mappings at once. */
@@ -65,6 +65,28 @@
pci_unmap_sg (struct pci_dev *pdev, struct scatterlist *sg, int sg_len,
int dir);
+/* SG-list versions of pci_dma_sync functions. */
+extern void
+pci_dma_sync_sg_for_cpu (struct pci_dev *dev,
+ struct scatterlist *sg, int sg_len,
+ int dir);
+extern void
+pci_dma_sync_sg_for_device (struct pci_dev *dev,
+ struct scatterlist *sg, int sg_len,
+ int dir);
+
+#define pci_map_page(dev, page, offs, size, dir) \
+ pci_map_single(dev, (page_address(page) + (offs)), size, dir)
+#define pci_unmap_page(dev,addr,sz,dir) \
+ pci_unmap_single(dev, addr, sz, dir)
+
+/* Test for pci_map_single or pci_map_page having generated an error. */
+static inline int
+pci_dma_mapping_error (dma_addr_t dma_addr)
+{
+ return dma_addr == 0;
+}
+
/* Allocate and map kernel buffer using consistent mode DMA for PCI
device. Returns non-NULL cpu-view pointer to the buffer if
successful and sets *DMA_ADDR to the pci side dma address as well,
@@ -81,6 +103,9 @@
pci_free_consistent (struct pci_dev *pdev, size_t size, void *cpu_addr,
dma_addr_t dma_addr);
+extern void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max);
+extern void pci_iounmap (struct pci_dev *dev, void __iomem *addr);
+
static inline void pcibios_add_platform_entries(struct pci_dev *dev)
{
}
-
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