lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

sh: pci: Rework fixed region checks in ioremap().

Browse Source 
Not all PCI channels have non-translatable memory windows, this is a
special property of the on-chip PCIC with its 0xfd00... mapping, handle
this explicitly.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Paul Mundt
2009-04-20 18:24:57 +09:00
parent 0bb34a6bf1
commit 99f95f1178
2 changed files with 17 additions and 24 deletions
Download Patch File Download Diff File Expand all files Collapse all files

27
arch/sh/include/asm/pci.h
View File

@ -90,7 +90,6 @@ static inline void pcibios_penalize_isa_irq(int irq, int active)
#define pci_unmap_len_set(PTR, LEN_NAME, VAL) do { } while (0)
#endif
#ifdef CONFIG_PCI
static inline void pci_dma_burst_advice(struct pci_dev *pdev,
enum pci_dma_burst_strategy *strat,
unsigned long *strategy_parameter)
@ -99,24 +98,18 @@ static inline void pci_dma_burst_advice(struct pci_dev *pdev,
*strategy_parameter = ~0UL;
}
static inline int __is_pci_memory(unsigned long phys_addr, unsigned long size)
{
struct pci_channel *p;
struct resource *res;
#ifdef CONFIG_SUPERH32
/*
* If we're on an SH7751 or SH7780 PCI controller, PCI memory is mapped
* at the end of the address space in a special non-translatable area.
*/
#define PCI_MEM_FIXED_START 0xfd000000
#define PCI_MEM_FIXED_END (PCI_MEM_FIXED_START + 0x01000000)
for (p = board_pci_channels; p->init; p++) {
res = p->mem_resource;
if (p->enabled && (phys_addr >= res->start) &&
(phys_addr + size) <= (res->end + 1))
return 1;
}
return 0;
}
#define is_pci_memory_fixed_range(s, e) \
((s) >= PCI_MEM_FIXED_START && (e) < PCI_MEM_FIXED_END)
#else
static inline int __is_pci_memory(unsigned long phys_addr, unsigned long size)
{
return 0;
}
#define is_pci_memory_fixed_range(s, e) (0)
#endif
/* Board-specific fixup routines. */