diff options
Diffstat (limited to 'plat/xilinx/zynqmp/pm_service/pm_ipi.c')
| -rw-r--r-- | plat/xilinx/zynqmp/pm_service/pm_ipi.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/plat/xilinx/zynqmp/pm_service/pm_ipi.c b/plat/xilinx/zynqmp/pm_service/pm_ipi.c index df3b854d..9148f909 100644 --- a/plat/xilinx/zynqmp/pm_service/pm_ipi.c +++ b/plat/xilinx/zynqmp/pm_service/pm_ipi.c @@ -56,6 +56,8 @@ #define IPI_BUFFER_TARGET_PL_3_OFFSET 0x180U #define IPI_BUFFER_TARGET_PMU_OFFSET 0x1C0U +#define IPI_BUFFER_MAX_WORDS 8 + #define IPI_BUFFER_REQ_OFFSET 0x0U #define IPI_BUFFER_RESP_OFFSET 0x20U @@ -218,6 +220,29 @@ static enum pm_ret_status pm_ipi_buff_read(const struct pm_proc *proc, } /** + * pm_ipi_buff_read_callb() - Reads IPI response after PMU has handled interrupt + * @value Used to return value from IPI buffer element (optional) + * @count Number of values to return in @value + * + * @return Returns status, either success or error+reason + */ +void pm_ipi_buff_read_callb(unsigned int *value, size_t count) +{ + size_t i; + uintptr_t buffer_base = IPI_BUFFER_PMU_BASE + + IPI_BUFFER_TARGET_APU_OFFSET + + IPI_BUFFER_REQ_OFFSET; + + if (count > IPI_BUFFER_MAX_WORDS) + count = IPI_BUFFER_MAX_WORDS; + + for (i = 0; i <= count; i++) { + *value = mmio_read_32(buffer_base + (i * PAYLOAD_ARG_SIZE)); + value++; + } +} + +/** * pm_ipi_send_sync() - Sends IPI request to the PMU * @proc Pointer to the processor who is initiating request * @payload API id and call arguments to be written in IPI buffer @@ -258,3 +283,8 @@ void pm_ipi_irq_disable(void) { mmio_write_32(IPI_APU_IDR, IPI_APU_IXR_PMU_0_MASK); } + +void pm_ipi_irq_clear(void) +{ + mmio_write_32(IPI_APU_ISR, IPI_APU_IXR_PMU_0_MASK); +} |