diff options
author | Avi Kivity <avi@redhat.com> | 2011-08-08 16:09:00 +0300 |
---|---|---|
committer | Anthony Liguori <aliguori@us.ibm.com> | 2011-08-08 10:15:53 -0500 |
commit | a815b16649eb12f3d834464043dc5ad48eafe594 (patch) | |
tree | 9137c3c3c67024b575a78e4f743b5625a236812b /hw/cirrus_vga.c | |
parent | 4e56f089ef3f170618207897e9727095c7a46940 (diff) | |
download | qemu-a815b16649eb12f3d834464043dc5ad48eafe594.zip qemu-a815b16649eb12f3d834464043dc5ad48eafe594.tar.gz qemu-a815b16649eb12f3d834464043dc5ad48eafe594.tar.bz2 |
cirrus: simplify vga window mmio access functions
Make use of the memory API's ability to satisfy multi-byte accesses via
multiple single-byte accesses.
Reviewed-by: Richard Henderson <rth@twiddle.net>
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Diffstat (limited to 'hw/cirrus_vga.c')
-rw-r--r-- | hw/cirrus_vga.c | 79 |
1 files changed, 11 insertions, 68 deletions
diff --git a/hw/cirrus_vga.c b/hw/cirrus_vga.c index c39acb9..5ded1ff 100644 --- a/hw/cirrus_vga.c +++ b/hw/cirrus_vga.c @@ -1956,7 +1956,9 @@ static void cirrus_mem_writeb_mode4and5_16bpp(CirrusVGAState * s, * ***************************************/ -static uint32_t cirrus_vga_mem_readb(void *opaque, target_phys_addr_t addr) +static uint64_t cirrus_vga_mem_read(void *opaque, + target_phys_addr_t addr, + uint32_t size) { CirrusVGAState *s = opaque; unsigned bank_index; @@ -1967,8 +1969,6 @@ static uint32_t cirrus_vga_mem_readb(void *opaque, target_phys_addr_t addr) return vga_mem_readb(s, addr); } - addr &= 0x1ffff; - if (addr < 0x10000) { /* XXX handle bitblt */ /* video memory */ @@ -2000,28 +2000,10 @@ static uint32_t cirrus_vga_mem_readb(void *opaque, target_phys_addr_t addr) return val; } -static uint32_t cirrus_vga_mem_readw(void *opaque, target_phys_addr_t addr) -{ - uint32_t v; - - v = cirrus_vga_mem_readb(opaque, addr); - v |= cirrus_vga_mem_readb(opaque, addr + 1) << 8; - return v; -} - -static uint32_t cirrus_vga_mem_readl(void *opaque, target_phys_addr_t addr) -{ - uint32_t v; - - v = cirrus_vga_mem_readb(opaque, addr); - v |= cirrus_vga_mem_readb(opaque, addr + 1) << 8; - v |= cirrus_vga_mem_readb(opaque, addr + 2) << 16; - v |= cirrus_vga_mem_readb(opaque, addr + 3) << 24; - return v; -} - -static void cirrus_vga_mem_writeb(void *opaque, target_phys_addr_t addr, - uint32_t mem_value) +static void cirrus_vga_mem_write(void *opaque, + target_phys_addr_t addr, + uint64_t mem_value, + uint32_t size) { CirrusVGAState *s = opaque; unsigned bank_index; @@ -2033,8 +2015,6 @@ static void cirrus_vga_mem_writeb(void *opaque, target_phys_addr_t addr, return; } - addr &= 0x1ffff; - if (addr < 0x10000) { if (s->cirrus_srcptr != s->cirrus_srcptr_end) { /* bitblt */ @@ -2084,51 +2064,14 @@ static void cirrus_vga_mem_writeb(void *opaque, target_phys_addr_t addr, } } -static void cirrus_vga_mem_writew(void *opaque, target_phys_addr_t addr, uint32_t val) -{ - cirrus_vga_mem_writeb(opaque, addr, val & 0xff); - cirrus_vga_mem_writeb(opaque, addr + 1, (val >> 8) & 0xff); -} - -static void cirrus_vga_mem_writel(void *opaque, target_phys_addr_t addr, uint32_t val) -{ - cirrus_vga_mem_writeb(opaque, addr, val & 0xff); - cirrus_vga_mem_writeb(opaque, addr + 1, (val >> 8) & 0xff); - cirrus_vga_mem_writeb(opaque, addr + 2, (val >> 16) & 0xff); - cirrus_vga_mem_writeb(opaque, addr + 3, (val >> 24) & 0xff); -} - -static uint64_t cirrus_vga_mem_read(void *opaque, - target_phys_addr_t addr, - uint32_t size) -{ - CirrusVGAState *s = opaque; - - switch (size) { - case 1: return cirrus_vga_mem_readb(s, addr); - case 2: return cirrus_vga_mem_readw(s, addr); - case 4: return cirrus_vga_mem_readl(s, addr); - default: abort(); - } -} - -static void cirrus_vga_mem_write(void *opaque, target_phys_addr_t addr, - uint64_t data, unsigned size) -{ - CirrusVGAState *s = opaque; - - switch (size) { - case 1: return cirrus_vga_mem_writeb(s, addr, data); - case 2: return cirrus_vga_mem_writew(s, addr, data); - case 4: return cirrus_vga_mem_writel(s, addr, data); - default: abort(); - } -}; - static const MemoryRegionOps cirrus_vga_mem_ops = { .read = cirrus_vga_mem_read, .write = cirrus_vga_mem_write, .endianness = DEVICE_LITTLE_ENDIAN, + .impl = { + .min_access_size = 1, + .max_access_size = 1, + }, }; /*************************************** |