diff options
Diffstat (limited to 'compote.c')
| -rw-r--r-- | compote.c | 71 |
1 files changed, 14 insertions, 57 deletions
@@ -28,22 +28,6 @@ #include "compote.h" #include "compote-uapi.h" -static inline uint32_t nvk_sq_cmd(unsigned subc, unsigned method, unsigned len) -{ - return ((method >> 2) & 0x1fff) | - ((len & 0xfff) << 16) | - ((subc & 0x7) << 13) | - (0x1 << 29); -} - -static inline uint32_t nvk_ni_cmd(unsigned subc, unsigned method, unsigned len) -{ - return ((method >> 2) & 0x1fff) | - ((len & 0xfff) << 16) | - ((subc & 0x7) << 13) | - (0x3 << 29); -} - int compote_context_new(compote_context_t **ctxp) { struct compote_ioctl_channel_alloc arg; @@ -185,50 +169,23 @@ int compote_context_execute(compote_context_t *ctx, return compote_context_ioctl(ctx, COMPOTE_IOCTL_CHAN_EXEC, &arg); } -int main(int argc, char *argv[]) +void *malloc_below40(unsigned nbytes) { - compote_context_t *ctx; - compote_mo_t *mo; - int ret; + static unsigned long addr = 16 << 20; + void *ptr; - ret = compote_context_new(&ctx); - if (ret) { - return ret; - } + nbytes += ((1 << 12) - 1); + nbytes &= ~((1 << 12) - 1); - ret = compote_mo_new(ctx, &mo, 64 << 10); - if (ret) { - goto out; - } - - { - uint32_t *ptr = mo->ptr; - uint32_t *sem = &ptr[128 >> 2]; - - ptr[128 >> 2] = 0xcafedead; - - ptr[0] = nvk_sq_cmd(1, 0x10, 4); - ptr[1] = ((unsigned long)sem) >> 32; - ptr[2] = ((unsigned long)sem) & 0xffffffff; - ptr[3] = 0xdeadcafe; - ptr[4] = 0x00000002; - - ret = compote_context_execute(ctx, ptr, 5); - if (ret) { - goto out; - } - - for (unsigned c = 0; (c < 10) && (ptr[128 >> 2] != 0xdeadcafe); c++) { - printf("[%4d] = 0x%08x 0x%08x 0x%08x\n", 128 >> 2, sem[0], sem[1], sem[2]); - sleep(1); + do { + if ((addr + nbytes) > (1UL << 40)) { + return NULL; } - printf("[%4d] = 0x%08x 0x%08x 0x%08x\n", 128 >> 2, sem[0], sem[1], sem[2]); - } - - printf("La compote c'est bon !\n"); + printf("addr 0x%p\n", (void *)addr); + ptr = mmap((void *)addr, nbytes, PROT_READ | PROT_WRITE, + MAP_ANONYMOUS | MAP_PRIVATE | MAP_FIXED, -1, 0); + addr += nbytes; + } while (ptr == MAP_FAILED); -out: - compote_mo_del(ctx, &mo); - compote_context_del(&ctx); - return ret; + return ptr; } |