mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-10-30 08:02:30 +00:00
Code Issues Releases Wiki Activity

habanalabs: fix device IRQ unmasking for BE host

Browse source 
When unmasking IRQs inside the ASIC, the driver passes an array of all the
IRQ to unmask. The ASIC's CPU is working in LE so when running in a BE
host, the driver needs to do the proper endianness swapping when preparing
this array.

In addition, this patch also fixes the endianness of a couple of kernel log
debug messages that print values of packets

Signed-off-by: Ben Segal <bpsegal20@gmail.com>
Reviewed-by: Oded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
This commit is contained in:
Ben Segal 2019-08-07 13:54:54 +00:00 committed by Oded Gabbay
parent b9040c9941
commit b421d83a39
1 changed files with 24 additions and 9 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

33
drivers/misc/habanalabs/goya/goya.c
View file

@ -3314,9 +3314,11 @@ static int goya_validate_dma_pkt_no_mmu(struct hl_device *hdev,
int rc;
dev_dbg(hdev->dev, "DMA packet details:\n");
dev_dbg(hdev->dev, "source == 0x%llx\n", user_dma_pkt->src_addr);
dev_dbg(hdev->dev, "destination == 0x%llx\n", user_dma_pkt->dst_addr);
dev_dbg(hdev->dev, "size == %u\n", user_dma_pkt->tsize);
dev_dbg(hdev->dev, "source == 0x%llx\n",
le64_to_cpu(user_dma_pkt->src_addr));
dev_dbg(hdev->dev, "destination == 0x%llx\n",
le64_to_cpu(user_dma_pkt->dst_addr));
dev_dbg(hdev->dev, "size == %u\n", le32_to_cpu(user_dma_pkt->tsize));
ctl = le32_to_cpu(user_dma_pkt->ctl);
user_dir = (ctl & GOYA_PKT_LIN_DMA_CTL_DMA_DIR_MASK) >>
@ -3345,9 +3347,11 @@ static int goya_validate_dma_pkt_mmu(struct hl_device *hdev,
struct packet_lin_dma *user_dma_pkt)
{
dev_dbg(hdev->dev, "DMA packet details:\n");
dev_dbg(hdev->dev, "source == 0x%llx\n", user_dma_pkt->src_addr);
dev_dbg(hdev->dev, "destination == 0x%llx\n", user_dma_pkt->dst_addr);
dev_dbg(hdev->dev, "size == %u\n", user_dma_pkt->tsize);
dev_dbg(hdev->dev, "source == 0x%llx\n",
le64_to_cpu(user_dma_pkt->src_addr));
dev_dbg(hdev->dev, "destination == 0x%llx\n",
le64_to_cpu(user_dma_pkt->dst_addr));
dev_dbg(hdev->dev, "size == %u\n", le32_to_cpu(user_dma_pkt->tsize));
/*
* WA for HW-23.
@ -3387,7 +3391,8 @@ static int goya_validate_wreg32(struct hl_device *hdev,
dev_dbg(hdev->dev, "WREG32 packet details:\n");
dev_dbg(hdev->dev, "reg_offset == 0x%x\n", reg_offset);
dev_dbg(hdev->dev, "value == 0x%x\n", wreg_pkt->value);
dev_dbg(hdev->dev, "value == 0x%x\n",
le32_to_cpu(wreg_pkt->value));
if (reg_offset != (mmDMA_CH_0_WR_COMP_ADDR_LO & 0x1FFF)) {
dev_err(hdev->dev, "WREG32 packet with illegal address 0x%x\n",
@ -4359,6 +4364,8 @@ static int goya_unmask_irq_arr(struct hl_device *hdev, u32 *irq_arr,
size_t total_pkt_size;
long result;
int rc;
int irq_num_entries, irq_arr_index;
__le32 *goya_irq_arr;
total_pkt_size = sizeof(struct armcp_unmask_irq_arr_packet) +
irq_arr_size;
@ -4376,8 +4383,16 @@ static int goya_unmask_irq_arr(struct hl_device *hdev, u32 *irq_arr,
if (!pkt)
return -ENOMEM;
pkt->length = cpu_to_le32(irq_arr_size / sizeof(irq_arr[0]));
memcpy(&pkt->irqs, irq_arr, irq_arr_size);
irq_num_entries = irq_arr_size / sizeof(irq_arr[0]);
pkt->length = cpu_to_le32(irq_num_entries);
/* We must perform any necessary endianness conversation on the irq
* array being passed to the goya hardware
*/
for (irq_arr_index = 0, goya_irq_arr = (__le32 *) &pkt->irqs;
irq_arr_index < irq_num_entries ; irq_arr_index++)
goya_irq_arr[irq_arr_index] =
cpu_to_le32(irq_arr[irq_arr_index]);
pkt->armcp_pkt.ctl = cpu_to_le32(ARMCP_PACKET_UNMASK_RAZWI_IRQ_ARRAY <<
ARMCP_PKT_CTL_OPCODE_SHIFT);