diff options
| author | Brian Paul <brian.paul@tungstengraphics.com> | 2002-11-27 00:26:59 +0000 |
|---|---|---|
| committer | Brian Paul <brian.paul@tungstengraphics.com> | 2002-11-27 00:26:59 +0000 |
| commit | 7c7789c02948ace266285b662af8deaf4d8c251c (patch) | |
| tree | 923748a68a6b201c49f97bfa69c741ebcd541fe1 /progs | |
| parent | 56ad63958b6618fb54d93cdb3c76ad8beb537a0f (diff) | |
do some simple MMIO register reads for sanity testing
Diffstat (limited to 'progs')
| -rw-r--r-- | progs/tests/glfbdevtest.c | 21 |
1 files changed, 20 insertions, 1 deletions
diff --git a/progs/tests/glfbdevtest.c b/progs/tests/glfbdevtest.c index 53eb96f7c13..4b3f1e2a979 100644 --- a/progs/tests/glfbdevtest.c +++ b/progs/tests/glfbdevtest.c @@ -1,4 +1,4 @@ -/* $Id: glfbdevtest.c,v 1.1.4.4 2002/11/26 21:20:45 brianp Exp $ */ +/* $Id: glfbdevtest.c,v 1.1.4.5 2002/11/27 00:26:59 brianp Exp $ */ /* * Test the GLFBDev interface. Only tested with radeonfb driver!!!! @@ -333,6 +333,25 @@ initialize_fbdev( void ) strerror(errno)); } printf("MMIOAddress = %p\n", MMIOAddress); + + /* try out some simple MMIO register reads */ + if (1) + { + typedef unsigned int CARD32; + typedef unsigned char CARD8; +#define RADEON_CONFIG_MEMSIZE 0x00f8 +#define RADEON_MEM_SDRAM_MODE_REG 0x0158 +#define MMIO_IN32(base, offset) \ + *(volatile CARD32 *)(void *)(((CARD8*)(base)) + (offset)) +#define INREG(addr) MMIO_IN32(MMIOAddress, addr) + int sz, type; + const char *typeStr[] = {"SDR", "DDR", "64-bit SDR"}; + sz = INREG(RADEON_CONFIG_MEMSIZE); + type = INREG(RADEON_MEM_SDRAM_MODE_REG); + printf("RADEON_CONFIG_MEMSIZE = %d (%d MB)\n", sz, sz / 1024 / 1024); + printf("RADEON_MEM_SDRAM_MODE_REG >> 30 = %d (%s)\n", + type >> 30, typeStr[type>>30]); + } #endif } |