diff options
| author | Peter Maydell <peter.maydell@linaro.org> | 2016-01-21 14:15:05 +0000 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2016-01-21 14:15:05 +0000 |
| commit | d7f25a9e6a6b2c69a0be6033903b7d6087bcf47d (patch) | |
| tree | 084def86972dcb269d223a9e91d6574253fed8c6 /include/qom | |
| parent | 1dc6fb1f5cc5cea5ba01010a19c6acefd0ae4b73 (diff) | |
cpu: Add new asidx_from_attrs() method
Add a new method to CPUClass which the memory system core can
use to obtain the correct address space index to use for a memory
access with a given set of transaction attributes, together
with the wrapper function cpu_asidx_from_attrs() which implements
the default behaviour ("always use asidx 0") for CPU classes
which don't provide the method.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Acked-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Diffstat (limited to 'include/qom')
| -rw-r--r-- | include/qom/cpu.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/include/qom/cpu.h b/include/qom/cpu.h index 58605a5350..ed232463d5 100644 --- a/include/qom/cpu.h +++ b/include/qom/cpu.h @@ -102,6 +102,8 @@ struct TranslationBlock; * associated memory transaction attributes to use for the access. * CPUs which use memory transaction attributes should implement this * instead of get_phys_page_debug. + * @asidx_from_attrs: Callback to return the CPU AddressSpace to use for + * a memory access with the specified memory transaction attributes. * @gdb_read_register: Callback for letting GDB read a register. * @gdb_write_register: Callback for letting GDB write a register. * @debug_excp_handler: Callback for handling debug exceptions. @@ -158,6 +160,7 @@ typedef struct CPUClass { hwaddr (*get_phys_page_debug)(CPUState *cpu, vaddr addr); hwaddr (*get_phys_page_attrs_debug)(CPUState *cpu, vaddr addr, MemTxAttrs *attrs); + int (*asidx_from_attrs)(CPUState *cpu, MemTxAttrs attrs); int (*gdb_read_register)(CPUState *cpu, uint8_t *buf, int reg); int (*gdb_write_register)(CPUState *cpu, uint8_t *buf, int reg); void (*debug_excp_handler)(CPUState *cpu); @@ -492,6 +495,23 @@ static inline hwaddr cpu_get_phys_page_debug(CPUState *cpu, vaddr addr) return cpu_get_phys_page_attrs_debug(cpu, addr, &attrs); } + +/** cpu_asidx_from_attrs: + * @cpu: CPU + * @attrs: memory transaction attributes + * + * Returns the address space index specifying the CPU AddressSpace + * to use for a memory access with the given transaction attributes. + */ +static inline int cpu_asidx_from_attrs(CPUState *cpu, MemTxAttrs attrs) +{ + CPUClass *cc = CPU_GET_CLASS(cpu); + + if (cc->asidx_from_attrs) { + return cc->asidx_from_attrs(cpu, attrs); + } + return 0; +} #endif /** |