Merge tag 'socfpga_firmware_updates_for_v7.4' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/dinguyen/linux into char-misc-next

Dinh writes:

SoCFPGA Firmware update for v7.4
- Turn off secondary CPUs using PSCI on Agilex7 and Stratix10
  Warm resets on these platforms require a clean PSCI state.
- Clean up stratix10_svc_free_memory() to reduce nesting
- Add SMMU DMA coherent support on Agilex5
  Use DMA-coherent buffers and IOVAs in the service driver for Agilex5
- Set kaddr1 to res.a1 which matches the existing error path and allow
  callers to retrieve firmware status details
- Allow older firmware that excluded COMMAND_RSU_UPDATE and COMMAND_RSU_STATUS
  to return SVC_STATUS_NO_SUPPORT so the firmware can continue instead of
  waiting for a timeout.
- Add support for SDM mailbox interrupt on async transactions
- Reduce polling times by introducing polling modes(Fast and Slow)

* tag 'socfpga_firmware_updates_for_v7.4' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/dinguyen/linux:
  firmware: stratix10-svc: Reduce polling interval for command status
  firmware: stratix10-svc: Add for SDM mailbox doorbell interrupt
  firmware: stratix10-svc: remove RSU exclusion from no-support path
  firmware: stratix10-svc: populate kaddr1 from config status response
  firmware: stratix10-svc: add Agilex5 SMMU DMA coherent support
  firmware: stratix10-svc: warn on unmatched free in stratix10_svc_free_memory
  firmware: stratix10-svc: add PSCI secondary CPU offline on warm reboot for agilex and stratix10

1 files changed, 44 insertions, 0 deletions

diff --git a/include/linux/firmware/intel/stratix10-smc.h b/include/linux/firmware/intel/stratix10-smc.h
index 366309260121..6a6fa51ad39e 100644
--- a/include/linux/firmware/intel/stratix10-smc.h
+++ b/include/linux/firmware/intel/stratix10-smc.h
@@ -725,6 +725,27 @@ INTEL_SIP_SMC_FAST_CALL_VAL(INTEL_SIP_SMC_FUNCID_FPGA_CONFIG_COMPLETED_WRITE)
 	INTEL_SIP_SMC_ASYNC_VAL(INTEL_SIP_SMC_ASYNC_FUNC_ID_POLL)
 
 /**
+ * Request INTEL_SIP_SMC_ASYNC_POLL_ON_IRQ
+ * Async call used by service driver at EL1 to retrieve the transaction IDs
+ * of available responses from the SDM mailbox (typically after an IRQ).
+ *
+ * Call register usage:
+ * a0 INTEL_SIP_SMC_ASYNC_POLL_ON_IRQ
+ * a1-a17 not used
+ *
+ * Return status
+ * a0 INTEL_SIP_SMC_STATUS_OK
+ * a1-a4 contain a bitmap of pending transaction IDs (set bit positions)
+ * a5-a17 not used
+ * Or
+ * a0 INTEL_SIP_SMC_STATUS_NO_RESPONSE
+ * a1-a17 not used
+ */
+#define INTEL_SIP_SMC_ASYNC_FUNC_ID_IRQ_POLL (0xC9)
+#define INTEL_SIP_SMC_ASYNC_POLL_ON_IRQ \
+	INTEL_SIP_SMC_ASYNC_VAL(INTEL_SIP_SMC_ASYNC_FUNC_ID_IRQ_POLL)
+
+/**
  * Request INTEL_SIP_SMC_ASYNC_HWMON_READTEMP
  * Async call to request temperature
  *
@@ -813,4 +834,27 @@ INTEL_SIP_SMC_FAST_CALL_VAL(INTEL_SIP_SMC_FUNCID_FPGA_CONFIG_COMPLETED_WRITE)
 #define INTEL_SIP_SMC_ASYNC_FUNC_ID_RSU_NOTIFY (0xEC)
 #define INTEL_SIP_SMC_ASYNC_RSU_NOTIFY \
 	INTEL_SIP_SMC_ASYNC_VAL(INTEL_SIP_SMC_ASYNC_FUNC_ID_RSU_NOTIFY)
+
+/**
+ * Request INTEL_SIP_SMC_SDM_REMAPPER_CONFIG
+ *
+ * Sync call to configure the SDM address remapper. On Agilex5, the remapper
+ * must be bypassed when the SMMU is active to avoid conflicts with IOMMU
+ * address translation.
+ *
+ * Call register usage:
+ * a0: INTEL_SIP_SMC_SDM_REMAPPER_CONFIG
+ * a1: INTEL_SIP_SMC_SDM_REMAPPER_ENABLE or INTEL_SIP_SMC_SDM_REMAPPER_BYPASS
+ * a2-7: not used
+ *
+ * Return status:
+ * a0: INTEL_SIP_SMC_STATUS_OK
+ * a1-3: not used
+ */
+#define INTEL_SIP_SMC_FUNCID_SDM_REMAPPER_CONFIG	513
+#define INTEL_SIP_SMC_SDM_REMAPPER_CONFIG \
+	INTEL_SIP_SMC_FAST_CALL_VAL(INTEL_SIP_SMC_FUNCID_SDM_REMAPPER_CONFIG)
+#define INTEL_SIP_SMC_SDM_REMAPPER_ENABLE		0
+#define INTEL_SIP_SMC_SDM_REMAPPER_BYPASS		1
+
 #endif