From c88a8b4ab0e1a1f06938939d9ba42e9da6144ccb Mon Sep 17 00:00:00 2001
From: "Maciej W. Rozycki" <macro@linux-mips.org>
Date: Mon, 9 Jun 2008 17:19:53 +0100
Subject: [PATCH] [MIPS] Remove obsolete isa_slot_offset
The isa_slot_offset variable and its __ISA_IO_base macro is not used
anywhere anymore. It does not look like a decent interface per today's
standards either. Remove both including all places of initialization.
Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
---
arch/mips/jazz/setup.c | 1 -
arch/mips/kernel/setup.c | 7 -------
arch/mips/pci/pci-bcm1480.c | 2 --
arch/mips/pci/pci-sb1250.c | 3 ---
arch/mips/sni/setup.c | 1 -
include/asm-mips/io.h | 17 -----------------
6 files changed, 31 deletions(-)
diff --git a/arch/mips/jazz/setup.c b/arch/mips/jazz/setup.c
index a7947199c99b5a..f136c8a8591c8d 100644
--- a/arch/mips/jazz/setup.c
+++ b/arch/mips/jazz/setup.c
@@ -79,7 +79,6 @@ void __init plat_mem_setup(void)
if (mips_machtype == MACH_MIPS_MAGNUM_4000)
EISA_bus = 1;
#endif
- isa_slot_offset = 0xe3000000;
/* request I/O space for devices used on all i[345]86 PCs */
for (i = 0; i < ARRAY_SIZE(jazz_io_resources); i++)
diff --git a/arch/mips/kernel/setup.c b/arch/mips/kernel/setup.c
index c6a063b2a0d9fc..c04e4e3afede66 100644
--- a/arch/mips/kernel/setup.c
+++ b/arch/mips/kernel/setup.c
@@ -68,13 +68,6 @@ static char command_line[CL_SIZE];
const unsigned long mips_io_port_base __read_mostly = -1;
EXPORT_SYMBOL(mips_io_port_base);
-/*
- * isa_slot_offset is the address where E(ISA) busaddress 0 is mapped
- * for the processor.
- */
-unsigned long isa_slot_offset;
-EXPORT_SYMBOL(isa_slot_offset);
-
static struct resource code_resource = { .name = "Kernel code", };
static struct resource data_resource = { .name = "Kernel data", };
diff --git a/arch/mips/pci/pci-bcm1480.c b/arch/mips/pci/pci-bcm1480.c
index 87e2c8f54e2d68..d19d262157f286 100644
--- a/arch/mips/pci/pci-bcm1480.c
+++ b/arch/mips/pci/pci-bcm1480.c
@@ -254,8 +254,6 @@ static int __init bcm1480_pcibios_init(void)
ioremap(A_BCM1480_PHYS_PCI_IO_MATCH_BYTES, 65536);
bcm1480_controller.io_map_base -= bcm1480_controller.io_offset;
set_io_port_base(bcm1480_controller.io_map_base);
- isa_slot_offset = (unsigned long)
- ioremap(A_BCM1480_PHYS_PCI_MEM_MATCH_BYTES, 1024*1024);
register_pci_controller(&bcm1480_controller);
diff --git a/arch/mips/pci/pci-sb1250.c b/arch/mips/pci/pci-sb1250.c
index 2a09ad91ec8c6f..9bc102a1380eef 100644
--- a/arch/mips/pci/pci-sb1250.c
+++ b/arch/mips/pci/pci-sb1250.c
@@ -254,9 +254,6 @@ static int __init sb1250_pcibios_init(void)
* works correctly with most of Linux's drivers.
* XXX ehs: Should this happen in PCI Device mode?
*/
- isa_slot_offset = (unsigned long)
- ioremap(A_PHYS_LDTPCI_IO_MATCH_BYTES_32, 1024 * 1024);
-
io_map_base = ioremap(A_PHYS_LDTPCI_IO_MATCH_BYTES, 1024 * 1024);
sb1250_controller.io_map_base = io_map_base;
set_io_port_base((unsigned long)io_map_base);
diff --git a/arch/mips/sni/setup.c b/arch/mips/sni/setup.c
index 5484e1c6205474..a49272ce7ef510 100644
--- a/arch/mips/sni/setup.c
+++ b/arch/mips/sni/setup.c
@@ -116,7 +116,6 @@ void __init plat_mem_setup(void)
/*
* Setup (E)ISA I/O memory access stuff
*/
- isa_slot_offset = CKSEG1ADDR(0xb0000000);
#ifdef CONFIG_EISA
EISA_bus = 1;
#endif
diff --git a/include/asm-mips/io.h b/include/asm-mips/io.h
index f18d2816cbecd2..501a40b9f18da0 100644
--- a/include/asm-mips/io.h
+++ b/include/asm-mips/io.h
@@ -160,13 +160,6 @@ static inline void * isa_bus_to_virt(unsigned long address)
#define virt_to_bus virt_to_phys
#define bus_to_virt phys_to_virt
-/*
- * isa_slot_offset is the address where E(ISA) busaddress 0 is mapped
- * for the processor. This implies the assumption that there is only
- * one of these busses.
- */
-extern unsigned long isa_slot_offset;
-
/*
* Change "struct page" to physical address.
*/
@@ -527,16 +520,6 @@ static inline void memcpy_toio(volatile void __iomem *dst, const void *src, int
memcpy((void __force *) dst, src, count);
}
-/*
- * ISA space is 'always mapped' on currently supported MIPS systems, no need
- * to explicitly ioremap() it. The fact that the ISA IO space is mapped
- * to PAGE_OFFSET is pure coincidence - it does not mean ISA values
- * are physical addresses. The following constant pointer can be
- * used as the IO-area pointer (it can be iounmapped as well, so the
- * analogy with PCI is quite large):
- */
-#define __ISA_IO_base ((char *)(isa_slot_offset))
-
/*
* The caches on some architectures aren't dma-coherent and have need to
* handle this in software. There are three types of operations that
--
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