diff options
Diffstat (limited to 'src/mesa/drivers/dri/i965/brw_compiler.h')
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_compiler.h | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_compiler.h b/src/mesa/drivers/dri/i965/brw_compiler.h index f55b7f37ffe..c944effda0a 100644 --- a/src/mesa/drivers/dri/i965/brw_compiler.h +++ b/src/mesa/drivers/dri/i965/brw_compiler.h @@ -26,6 +26,7 @@ #include <stdio.h> #include "brw_device_info.h" #include "main/mtypes.h" +#include "main/macros.h" #ifdef __cplusplus extern "C" { @@ -831,6 +832,38 @@ brw_compile_cs(const struct brw_compiler *compiler, void *log_data, unsigned *final_assembly_size, char **error_str); +static inline uint32_t +encode_slm_size(const struct brw_device_info *devinfo, uint32_t bytes) +{ + uint32_t slm_size = 0; + + /* Shared Local Memory is specified as powers of two, and encoded in + * INTERFACE_DESCRIPTOR_DATA with the following representations: + * + * Size | 0 kB | 1 kB | 2 kB | 4 kB | 8 kB | 16 kB | 32 kB | 64 kB | + * ------------------------------------------------------------------- + * Gen7-8 | 0 | none | none | 1 | 2 | 4 | 8 | 16 | + * ------------------------------------------------------------------- + * Gen9+ | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | + */ + assert(bytes <= 64 * 1024); + + if (bytes > 0) { + /* Shared Local Memory Size is specified as powers of two. */ + slm_size = util_next_power_of_two(bytes); + + if (devinfo->gen >= 9) { + /* Use a minimum of 1kB; turn an exponent of 10 (1024 kB) into 1. */ + slm_size = ffs(MAX2(slm_size, 1024)) - 10; + } else { + /* Use a minimum of 4kB; convert to the pre-Gen9 representation. */ + slm_size = MAX2(slm_size, 4096) / 4096; + } + } + + return slm_size; +} + #ifdef __cplusplus } /* extern "C" */ #endif |