system/linux
system/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux synced 2024-10-18 01:08:35 +00:00
Code Issues Packages Projects Releases Wiki Activity

habanalabs: add CPU-CP packet for engine core ASID cfg

Browse source 
In some cases the driver cannot configure ASID of some engines due to
the security level of the relevant registers.
For this a new CPU-CP packet is introduced, which will allow the driver
to ask the F/W to do this configuration instead.

Signed-off-by: Tomer Tayar <ttayar@habana.ai>
Reviewed-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
This commit is contained in:
Tomer Tayar 2021-12-16 16:31:18 +02:00 committed by Oded Gabbay
parent 519f4ed0a0
commit f297a0e9fe
3 changed files with 26 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

20
drivers/misc/habanalabs/common/firmware_if.c
View file

@ -1059,6 +1059,26 @@ int hl_fw_dram_pending_row_get(struct hl_device *hdev, u32 *pend_rows_num)
return rc;
}
int hl_fw_cpucp_engine_core_asid_set(struct hl_device *hdev, u32 asid)
{
struct cpucp_packet pkt;
int rc;
memset(&pkt, 0, sizeof(pkt));
pkt.ctl = cpu_to_le32(CPUCP_PACKET_ENGINE_CORE_ASID_SET << CPUCP_PKT_CTL_OPCODE_SHIFT);
pkt.value = cpu_to_le64(asid);
rc = hdev->asic_funcs->send_cpu_message(hdev, (u32 *) &pkt, sizeof(pkt),
HL_CPUCP_INFO_TIMEOUT_USEC, NULL);
if (rc)
dev_err(hdev->dev,
"Failed on ASID configuration request for engine core, error %d\n",
rc);
return rc;
}
void hl_fw_ask_hard_reset_without_linux(struct hl_device *hdev)
{
struct static_fw_load_mgr *static_loader =

1
drivers/misc/habanalabs/common/habanalabs.h
View file

@ -3065,6 +3065,7 @@ int hl_fw_dynamic_send_protocol_cmd(struct hl_device *hdev,
int hl_fw_dram_replaced_row_get(struct hl_device *hdev,
struct cpucp_hbm_row_info *info);
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_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);

5
drivers/misc/habanalabs/include/common/cpucp_if.h
View file

@ -386,6 +386,9 @@ enum pq_init_status {
*
* CPUCP_PACKET_POWER_SET -
* Resets power history of device to 0
*
* CPUCP_PACKET_ENGINE_CORE_ASID_SET -
* Packet to perform engine core ASID configuration
*/
enum cpucp_packet_id {
@ -434,6 +437,8 @@ enum cpucp_packet_id {
CPUCP_PACKET_HBM_REPLACED_ROWS_INFO_GET,/* internal */
CPUCP_PACKET_HBM_PENDING_ROWS_STATUS, /* internal */
CPUCP_PACKET_POWER_SET, /* internal */
CPUCP_PACKET_RESERVED, /* not used */
CPUCP_PACKET_ENGINE_CORE_ASID_SET, /* internal */
};
#define CPUCP_PACKET_FENCE_VAL 0xFE8CE7A5