From cc7b790d412461520de49eb321a0aeed2735e5c4 Mon Sep 17 00:00:00 2001 From: Dafna Hirschfeld Date: Wed, 8 Feb 2023 16:16:08 +0200 Subject: [PATCH] accel/habanalabs: do soft-reset using cpucp packet This is done depending on the FW version. The cpucp method is preferable and saves scratchpads resource. Signed-off-by: Dafna Hirschfeld Reviewed-by: Oded Gabbay Signed-off-by: Oded Gabbay --- drivers/accel/habanalabs/common/firmware_if.c | 14 +++++++++++ drivers/accel/habanalabs/common/habanalabs.h | 1 + drivers/accel/habanalabs/gaudi2/gaudi2.c | 24 ++++++++++++------- .../habanalabs/include/common/cpucp_if.h | 4 ++++ 4 files changed, 34 insertions(+), 9 deletions(-) diff --git a/drivers/accel/habanalabs/common/firmware_if.c b/drivers/accel/habanalabs/common/firmware_if.c index 62052cfe694f..e48f024d8649 100644 --- a/drivers/accel/habanalabs/common/firmware_if.c +++ b/drivers/accel/habanalabs/common/firmware_if.c @@ -591,6 +591,20 @@ void hl_fw_cpu_accessible_dma_pool_free(struct hl_device *hdev, size_t size, size); } +int hl_fw_send_soft_reset(struct hl_device *hdev) +{ + struct cpucp_packet pkt; + int rc; + + memset(&pkt, 0, sizeof(pkt)); + pkt.ctl = cpu_to_le32(CPUCP_PACKET_SOFT_RESET << CPUCP_PKT_CTL_OPCODE_SHIFT); + rc = hdev->asic_funcs->send_cpu_message(hdev, (u32 *) &pkt, sizeof(pkt), 0, NULL); + if (rc) + dev_err(hdev->dev, "failed to send soft-reset msg (err = %d)\n", rc); + + return rc; +} + int hl_fw_send_device_activity(struct hl_device *hdev, bool open) { struct cpucp_packet pkt; diff --git a/drivers/accel/habanalabs/common/habanalabs.h b/drivers/accel/habanalabs/common/habanalabs.h index 02620654ccdf..6b102947cb90 100644 --- a/drivers/accel/habanalabs/common/habanalabs.h +++ b/drivers/accel/habanalabs/common/habanalabs.h @@ -3884,6 +3884,7 @@ int hl_fw_dram_replaced_row_get(struct hl_device *hdev, int hl_fw_dram_pending_row_get(struct hl_device *hdev, u32 *pend_rows_num); int hl_fw_cpucp_engine_core_asid_set(struct hl_device *hdev, u32 asid); int hl_fw_send_device_activity(struct hl_device *hdev, bool open); +int hl_fw_send_soft_reset(struct hl_device *hdev); int hl_pci_bars_map(struct hl_device *hdev, const char * const name[3], bool is_wc[3]); int hl_pci_elbi_read(struct hl_device *hdev, u64 addr, u32 *data); diff --git a/drivers/accel/habanalabs/gaudi2/gaudi2.c b/drivers/accel/habanalabs/gaudi2/gaudi2.c index 6e3aa89b19c2..5c80e7af5b78 100644 --- a/drivers/accel/habanalabs/gaudi2/gaudi2.c +++ b/drivers/accel/habanalabs/gaudi2/gaudi2.c @@ -6148,18 +6148,24 @@ static int gaudi2_execute_soft_reset(struct hl_device *hdev, bool driver_perform u32 poll_timeout_us) { struct cpu_dyn_regs *dyn_regs = &hdev->fw_loader.dynamic_loader.comm_desc.cpu_dyn_regs; + int rc = 0; if (!driver_performs_reset) { - /* set SP to indicate reset request sent to FW */ - if (dyn_regs->cpu_rst_status) - WREG32(le32_to_cpu(dyn_regs->cpu_rst_status), CPU_RST_STATUS_NA); - else - WREG32(mmCPU_RST_STATUS_TO_HOST, CPU_RST_STATUS_NA); + if (hl_is_fw_sw_ver_below(hdev, 1, 10)) { + /* set SP to indicate reset request sent to FW */ + if (dyn_regs->cpu_rst_status) + WREG32(le32_to_cpu(dyn_regs->cpu_rst_status), CPU_RST_STATUS_NA); + else + WREG32(mmCPU_RST_STATUS_TO_HOST, CPU_RST_STATUS_NA); + WREG32(le32_to_cpu(dyn_regs->gic_host_soft_rst_irq), + gaudi2_irq_map_table[GAUDI2_EVENT_CPU_SOFT_RESET].cpu_id); - WREG32(le32_to_cpu(dyn_regs->gic_host_soft_rst_irq), - gaudi2_irq_map_table[GAUDI2_EVENT_CPU_SOFT_RESET].cpu_id); - - return gaudi2_get_soft_rst_done_indication(hdev, poll_timeout_us); + /* wait for f/w response */ + rc = gaudi2_get_soft_rst_done_indication(hdev, poll_timeout_us); + } else { + rc = hl_fw_send_soft_reset(hdev); + } + return rc; } /* Block access to engines, QMANs and SM during reset, these diff --git a/drivers/accel/habanalabs/include/common/cpucp_if.h b/drivers/accel/habanalabs/include/common/cpucp_if.h index 8bbe685458c4..f68308cc2524 100644 --- a/drivers/accel/habanalabs/include/common/cpucp_if.h +++ b/drivers/accel/habanalabs/include/common/cpucp_if.h @@ -665,6 +665,9 @@ enum pq_init_status { * * CPUCP_PACKET_REGISTER_INTERRUPTS - * Packet to register interrupts indicating LKD is ready to receive events from FW. + * + * CPUCP_PACKET_SOFT_RESET - + * Packet to perform soft-reset. */ enum cpucp_packet_id { @@ -731,6 +734,7 @@ enum cpucp_packet_id { CPUCP_PACKET_RESERVED11, /* not used */ CPUCP_PACKET_RESERVED12, /* internal */ CPUCP_PACKET_REGISTER_INTERRUPTS, /* internal */ + CPUCP_PACKET_SOFT_RESET, /* internal */ CPUCP_PACKET_ID_MAX /* must be last */ };