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lib: iomap: Add MSM RTB support 

The ioread* and the iowrite* functions and not inlined and hence
the RTB logs end up containing the ioread and iowrite functions
themselves and not the ones invoking them.

Add RTB support to the ioread*and iowrite* functions so that we can
get meaningful RTB logs.

Note that to avoid multiple RTB logs for ioread* and iowrite*
functions, read*_no_log and write*_no_log macros are added.

Change-Id: I2315d44c4dfbeee6be4a52f21bf4a20dd9508597
Signed-off-by: Rohit Vaswani <rvaswani@codeaurora.org>
Signed-off-by: David Keitel <dkeitel@codeaurora.org>
This commit is contained in:
Rohit Vaswani 2014-08-29 08:56:22 -07:00 committed by David Keitel
parent c0c45d0cff
commit 857d4aadc3
2 changed files with 36 additions and 7 deletions
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20
arch/arm64/include/asm/io.h
View File

@ -143,8 +143,16 @@ static inline u64 __raw_readq_no_log(const volatile void __iomem *addr)
#define writel_relaxed(v,c) ((void)__raw_writel((__force u32)cpu_to_le32(v),(c)))
#define writeq_relaxed(v,c) ((void)__raw_writeq((__force u64)cpu_to_le64(v),(c)))
#define readb_relaxed_no_log(c) ({ u8 __v = __raw_readb_no_log(c); __v; })
#define readw_relaxed_no_log(c) ({ u16 __v = le16_to_cpu((__force __le16)__raw_readw_no_log(c)); __v; })
#define readl_relaxed_no_log(c) ({ u32 __v = le32_to_cpu((__force __le32)__raw_readl_no_log(c)); __v; })
#define writel_relaxed_no_log(v,c) ((void)__raw_writel_no_log((__force u32)cpu_to_le32(v),(c)))
#define readq_relaxed_no_log(c) ({ u64 __v = le64_to_cpu((__force __le64)__raw_readq_no_log(c)); __v; })
#define writeb_relaxed_no_log(v, c) ((void)__raw_writeb_no_log((v), (c)))
#define writew_relaxed_no_log(v, c) ((void)__raw_writew_no_log((__force u16)cpu_to_le32(v), (c)))
#define writel_relaxed_no_log(v, c) ((void)__raw_writel_no_log((__force u32)cpu_to_le32(v), (c)))
#define writeq_relaxed_no_log(v, c) ((void)__raw_writeq_no_log((__force u64)cpu_to_le32(v), (c)))
/*
* I/O memory access primitives. Reads are ordered relative to any
* following Normal memory access. Writes are ordered relative to any prior
@ -160,6 +168,16 @@ static inline u64 __raw_readq_no_log(const volatile void __iomem *addr)
#define writel(v,c) ({ __iowmb(); writel_relaxed((v),(c)); })
#define writeq(v,c) ({ __iowmb(); writeq_relaxed((v),(c)); })
#define readb_no_log(c) ({ u8 __v = readb_relaxed_no_log(c); __iormb(); __v; })
#define readw_no_log(c) ({ u16 __v = readw_relaxed_no_log(c); __iormb(); __v; })
#define readl_no_log(c) ({ u32 __v = readl_relaxed_no_log(c); __iormb(); __v; })
#define readq_no_log(c) ({ u64 __v = readq_relaxed_no_log(c); __iormb(); __v; })
#define writeb_no_log(v, c) ({ __iowmb(); writeb_relaxed_no_log((v), (c)); })
#define writew_no_log(v, c) ({ __iowmb(); writew_relaxed_no_log((v), (c)); })
#define writel_no_log(v, c) ({ __iowmb(); writel_relaxed_no_log((v), (c)); })
#define writeq_no_log(v, c) ({ __iowmb(); writeq_relaxed_no_log((v), (c)); })
/*
* A typesafe __io() helper
*/

23
lib/iomap.c
View File

@ -5,6 +5,7 @@
*/
#include <linux/pci.h>
#include <linux/io.h>
#include <linux/msm_rtb.h>
#include <linux/export.h>
@ -70,26 +71,31 @@ static void bad_io_access(unsigned long port, const char *access)
unsigned int ioread8(void __iomem *addr)
{
IO_COND(addr, return inb(port), return readb(addr));
uncached_logk_pc(LOGK_READL, __builtin_return_address(0), addr);
IO_COND(addr, return inb(port), return readb_no_log(addr));
return 0xff;
}
unsigned int ioread16(void __iomem *addr)
{
IO_COND(addr, return inw(port), return readw(addr));
uncached_logk_pc(LOGK_READL, __builtin_return_address(0), addr);
IO_COND(addr, return inw(port), return readw_no_log(addr));
return 0xffff;
}
unsigned int ioread16be(void __iomem *addr)
{
uncached_logk_pc(LOGK_READL, __builtin_return_address(0), addr);
IO_COND(addr, return pio_read16be(port), return mmio_read16be(addr));
return 0xffff;
}
unsigned int ioread32(void __iomem *addr)
{
IO_COND(addr, return inl(port), return readl(addr));
uncached_logk_pc(LOGK_READL, __builtin_return_address(0), addr);
IO_COND(addr, return inl(port), return readl_no_log(addr));
return 0xffffffff;
}
unsigned int ioread32be(void __iomem *addr)
{
uncached_logk_pc(LOGK_READL, __builtin_return_address(0), addr);
IO_COND(addr, return pio_read32be(port), return mmio_read32be(addr));
return 0xffffffff;
}
@ -111,22 +117,27 @@ EXPORT_SYMBOL(ioread32be);
void iowrite8(u8 val, void __iomem *addr)
{
IO_COND(addr, outb(val,port), writeb(val, addr));
uncached_logk_pc(LOGK_WRITEL, __builtin_return_address(0), addr);
IO_COND(addr, outb(val, port), writeb_no_log(val, addr));
}
void iowrite16(u16 val, void __iomem *addr)
{
IO_COND(addr, outw(val,port), writew(val, addr));
uncached_logk_pc(LOGK_WRITEL, __builtin_return_address(0), addr);
IO_COND(addr, outw(val, port), writew_no_log(val, addr));
}
void iowrite16be(u16 val, void __iomem *addr)
{
uncached_logk_pc(LOGK_WRITEL, __builtin_return_address(0), addr);
IO_COND(addr, pio_write16be(val,port), mmio_write16be(val, addr));
}
void iowrite32(u32 val, void __iomem *addr)
{
IO_COND(addr, outl(val,port), writel(val, addr));
uncached_logk_pc(LOGK_WRITEL, __builtin_return_address(0), addr);
IO_COND(addr, outl(val, port), writel_no_log(val, addr));
}
void iowrite32be(u32 val, void __iomem *addr)
{
uncached_logk_pc(LOGK_WRITEL, __builtin_return_address(0), addr);
IO_COND(addr, pio_write32be(val,port), mmio_write32be(val, addr));
}
EXPORT_SYMBOL(iowrite8);