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accel/habanalabs: do soft-reset using cpucp packet

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This is done depending on the FW version. The cpucp method is
preferable and saves scratchpads resource.

Signed-off-by: Dafna Hirschfeld <dhirschfeld@habana.ai>
Reviewed-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
This commit is contained in:
Dafna Hirschfeld 2023-02-08 16:16:08 +02:00 committed by Oded Gabbay
parent a12428acf8
commit cc7b790d41
4 changed files with 34 additions and 9 deletions
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14
drivers/accel/habanalabs/common/firmware_if.c
View File

@ -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;

1
drivers/accel/habanalabs/common/habanalabs.h
View File

@ -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);

24
drivers/accel/habanalabs/gaudi2/gaudi2.c
View File

@ -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

4
drivers/accel/habanalabs/include/common/cpucp_if.h
View File

@ -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 */
};