diff options
| author | Oded Gabbay <oded.gabbay@gmail.com> | 2020-03-29 13:18:30 +0300 |
|---|---|---|
| committer | Oded Gabbay <oded.gabbay@gmail.com> | 2020-05-17 12:06:22 +0300 |
| commit | cb056b9fd5138748dca7b679ea5f16b6bd24fb6c (patch) | |
| tree | 178d02e490c4c090e13c595ad30fb5edbb0245dc /drivers/misc/habanalabs/goya | |
| parent | c8aee597bbe2eb7458376cc1116ea4e5a3537764 (diff) | |
| download | linux-cb056b9fd5138748dca7b679ea5f16b6bd24fb6c.tar.bz2 | |
habanalabs: retrieve DMA mask indication from firmware
Retrieve from the firmware the DMA mask value we need to set according to
the device's PCI controller configuration. This is needed when working on
POWER9 machines, as the device's PCI controller is configured in a
different way in those machines.
Reviewed-by: Tomer Tayar <ttayar@habana.ai>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
Diffstat (limited to 'drivers/misc/habanalabs/goya')
| -rw-r--r-- | drivers/misc/habanalabs/goya/goya.c | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/drivers/misc/habanalabs/goya/goya.c b/drivers/misc/habanalabs/goya/goya.c index a0a96ca31757..85f29cb7d67b 100644 --- a/drivers/misc/habanalabs/goya/goya.c +++ b/drivers/misc/habanalabs/goya/goya.c @@ -531,7 +531,7 @@ static int goya_early_init(struct hl_device *hdev) prop->dram_pci_bar_size = pci_resource_len(pdev, DDR_BAR_ID); - rc = hl_pci_init(hdev, 48); + rc = hl_pci_init(hdev); if (rc) return rc; @@ -5185,6 +5185,20 @@ u32 goya_get_queue_id_for_cq(struct hl_device *hdev, u32 cq_idx) return cq_idx; } +static void goya_set_dma_mask_from_fw(struct hl_device *hdev) +{ + if (RREG32(mmPSOC_GLOBAL_CONF_NON_RST_FLOPS_0) == + HL_POWER9_HOST_MAGIC) { + dev_dbg(hdev->dev, "Working in 64-bit DMA mode\n"); + hdev->power9_64bit_dma_enable = 1; + hdev->dma_mask = 64; + } else { + dev_dbg(hdev->dev, "Working in 48-bit DMA mode\n"); + hdev->power9_64bit_dma_enable = 0; + hdev->dma_mask = 48; + } +} + static const struct hl_asic_funcs goya_funcs = { .early_init = goya_early_init, .early_fini = goya_early_fini, @@ -5247,7 +5261,8 @@ static const struct hl_asic_funcs goya_funcs = { .get_clk_rate = goya_get_clk_rate, .get_queue_id_for_cq = goya_get_queue_id_for_cq, .read_device_fw_version = goya_read_device_fw_version, - .load_firmware_to_device = goya_load_firmware_to_device + .load_firmware_to_device = goya_load_firmware_to_device, + .set_dma_mask_from_fw = goya_set_dma_mask_from_fw }; /* |