diff options
| author | Ofir Bitton <obitton@habana.ai> | 2021-05-12 09:07:39 +0300 |
|---|---|---|
| committer | Oded Gabbay <ogabbay@kernel.org> | 2021-06-18 15:23:40 +0300 |
| commit | 1dae12fe1bf7ae98f31223b47253f4dd6b0a2909 (patch) | |
| tree | 625adb1a61c895b41fe3ba32c76fda6fbc561159 /drivers/misc/habanalabs | |
| parent | e591a49cb585ca76d4f9aad2e9635ec7e6a4fb23 (diff) | |
habanalabs/gaudi: do not move HBM bar if iATU done by FW
As iATU configuration is done by FW, driver should not try and
move HBM bar.
Signed-off-by: Ofir Bitton <obitton@habana.ai>
Reviewed-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
Diffstat (limited to 'drivers/misc/habanalabs')
| -rw-r--r-- | drivers/misc/habanalabs/gaudi/gaudi.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/misc/habanalabs/gaudi/gaudi.c b/drivers/misc/habanalabs/gaudi/gaudi.c index 6bd9167fc7f1..1fa12394e3b6 100644 --- a/drivers/misc/habanalabs/gaudi/gaudi.c +++ b/drivers/misc/habanalabs/gaudi/gaudi.c @@ -580,6 +580,9 @@ static u64 gaudi_set_hbm_bar_base(struct hl_device *hdev, u64 addr) if ((gaudi) && (gaudi->hbm_bar_cur_addr == addr)) return old_addr; + if (hdev->asic_prop.iatu_done_by_fw) + return U64_MAX; + /* Inbound Region 2 - Bar 4 - Point to HBM */ pci_region.mode = PCI_BAR_MATCH_MODE; pci_region.bar = HBM_BAR_ID; @@ -3974,10 +3977,27 @@ static void gaudi_pre_hw_init(struct hl_device *hdev) static int gaudi_hw_init(struct hl_device *hdev) { + struct gaudi_device *gaudi = hdev->asic_specific; int rc; gaudi_pre_hw_init(hdev); + /* If iATU is done by FW, the HBM bar ALWAYS points to DRAM_PHYS_BASE. + * So we set it here and if anyone tries to move it later to + * a different address, there will be an error + */ + if (hdev->asic_prop.iatu_done_by_fw) + gaudi->hbm_bar_cur_addr = DRAM_PHYS_BASE; + + /* + * Before pushing u-boot/linux to device, need to set the hbm bar to + * base address of dram + */ + if (gaudi_set_hbm_bar_base(hdev, DRAM_PHYS_BASE) == U64_MAX) { + dev_err(hdev->dev, + "failed to map HBM bar to DRAM base address\n"); + return -EIO; + } rc = gaudi_init_cpu(hdev); if (rc) { |