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Merge tag 'misc-habanalabs-fixes-2019-04-01' of git://people.freedesktop.org/~gabbayo/linux into char-misc-linus

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Oded writes:

The following bug fix is included in this tag:

- Fix the low credit limit for DMA channel #0. Without this fix, the
  channel is unusable by the user.

* tag 'misc-habanalabs-fixes-2019-04-01' of git://people.freedesktop.org/~gabbayo/linux:
  habanalabs: remove low credit limit of DMA #0
This commit is contained in:
Greg Kroah-Hartman 2019-04-02 17:53:53 +02:00
commit c24b074cfd
1 changed files with 4 additions and 5 deletions
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9
drivers/misc/habanalabs/goya/goya.c
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@ -1688,12 +1688,11 @@ static void goya_init_golden_registers(struct hl_device *hdev)
/*
* Workaround for H2 #HW-23 bug
* Set DMA max outstanding read requests to 240 on DMA CH 1. Set it
* to 16 on KMD DMA
* We need to limit only these DMAs because the user can only read
* Set DMA max outstanding read requests to 240 on DMA CH 1.
* This limitation is still large enough to not affect Gen4 bandwidth.
* We need to only limit that DMA channel because the user can only read
* from Host using DMA CH 1
*/
WREG32(mmDMA_CH_0_CFG0, 0x0fff0010);
WREG32(mmDMA_CH_1_CFG0, 0x0fff00F0);
goya->hw_cap_initialized |= HW_CAP_GOLDEN;
@ -3693,7 +3692,7 @@ static int goya_validate_dma_pkt_mmu(struct hl_device *hdev,
* WA for HW-23.
* We can't allow user to read from Host using QMANs other than 1.
*/
if (parser->hw_queue_id > GOYA_QUEUE_ID_DMA_1 &&
if (parser->hw_queue_id != GOYA_QUEUE_ID_DMA_1 &&
hl_mem_area_inside_range(le64_to_cpu(user_dma_pkt->src_addr),
le32_to_cpu(user_dma_pkt->tsize),
hdev->asic_prop.va_space_host_start_address,