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habanalabs: increase PCI ELBI timeout for Palladium 

This patch increases the timeout for PCI ELBI configuration to support low
frequency Palladium images.

Signed-off-by: Omer Shpigelman <oshpigelman@habana.ai>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
This commit is contained in:
Omer Shpigelman 2019-05-13 14:44:50 +03:00 committed by Oded Gabbay
parent 921a465ba7
commit a1e537b3f0
2 changed files with 11 additions and 1 deletions
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2
drivers/misc/habanalabs/habanalabs.h
View File

@ -34,6 +34,8 @@
#define HL_ARMCP_INFO_TIMEOUT_USEC 10000000 /* 10s */
#define HL_ARMCP_EEPROM_TIMEOUT_USEC 10000000 /* 10s */
#define HL_PCI_ELBI_TIMEOUT_MSEC 10 /* 10ms */
#define HL_MAX_QUEUES 128
#define HL_MAX_JOBS_PER_CS 64

10
drivers/misc/habanalabs/pci.c
View File

@ -10,6 +10,8 @@
#include <linux/pci.h>
#define HL_PLDM_PCI_ELBI_TIMEOUT_MSEC (HL_PCI_ELBI_TIMEOUT_MSEC * 10)
/**
* hl_pci_bars_map() - Map PCI BARs.
* @hdev: Pointer to hl_device structure.
@ -88,8 +90,14 @@ static int hl_pci_elbi_write(struct hl_device *hdev, u64 addr, u32 data)
{
struct pci_dev *pdev = hdev->pdev;
ktime_t timeout;
u64 msec;
u32 val;
if (hdev->pldm)
msec = HL_PLDM_PCI_ELBI_TIMEOUT_MSEC;
else
msec = HL_PCI_ELBI_TIMEOUT_MSEC;
/* Clear previous status */
pci_write_config_dword(pdev, mmPCI_CONFIG_ELBI_STS, 0);
@ -98,7 +106,7 @@ static int hl_pci_elbi_write(struct hl_device *hdev, u64 addr, u32 data)
pci_write_config_dword(pdev, mmPCI_CONFIG_ELBI_CTRL,
PCI_CONFIG_ELBI_CTRL_WRITE);
timeout = ktime_add_ms(ktime_get(), 10);
timeout = ktime_add_ms(ktime_get(), msec);
for (;;) {
pci_read_config_dword(pdev, mmPCI_CONFIG_ELBI_STS, &val);
if (val & PCI_CONFIG_ELBI_STS_MASK)