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Add log_desc_block_size to driver

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This commit is contained in:
Alex Forencich 2020-04-21 14:38:21 -07:00
parent 9e64d19ea5
commit a2ce454c22
3 changed files with 17 additions and 6 deletions
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3
modules/mqnic/mqnic.h
View File

@ -153,6 +153,9 @@ struct mqnic_ring {
u32 mtu;
u32 page_order;
u32 desc_block_size;
u32 log_desc_block_size;
size_t buf_size;
u8 *buf;
dma_addr_t buf_dma_addr;

10
modules/mqnic/mqnic_rx.c
View File

@ -50,6 +50,10 @@ int mqnic_create_rx_ring(struct mqnic_priv *priv, struct mqnic_ring **ring_ptr,
ring->size_mask = ring->size-1;
ring->stride = roundup_pow_of_two(stride);
ring->desc_block_size = ring->stride/MQNIC_DESC_SIZE;
ring->log_desc_block_size = ring->desc_block_size < 2 ? 0 : ilog2(ring->desc_block_size-1)+1;
ring->desc_block_size = 1 << ring->log_desc_block_size;
ring->rx_info = kvzalloc(sizeof(*ring->rx_info)*ring->size, GFP_KERNEL);
if (!ring->rx_info)
{
@ -87,7 +91,7 @@ int mqnic_create_rx_ring(struct mqnic_priv *priv, struct mqnic_ring **ring_ptr,
iowrite32(ring->head_ptr & ring->hw_ptr_mask, ring->hw_addr+MQNIC_QUEUE_HEAD_PTR_REG);
iowrite32(ring->tail_ptr & ring->hw_ptr_mask, ring->hw_addr+MQNIC_QUEUE_TAIL_PTR_REG);
// set size
iowrite32(ilog2(ring->size), ring->hw_addr+MQNIC_QUEUE_ACTIVE_LOG_SIZE_REG);
iowrite32(ilog2(ring->size) | (ring->log_desc_block_size << 8), ring->hw_addr+MQNIC_QUEUE_ACTIVE_LOG_SIZE_REG);
*ring_ptr = ring;
return 0;
@ -130,7 +134,7 @@ int mqnic_activate_rx_ring(struct mqnic_priv *priv, struct mqnic_ring *ring, int
iowrite32(ring->head_ptr & ring->hw_ptr_mask, ring->hw_addr+MQNIC_QUEUE_HEAD_PTR_REG);
iowrite32(ring->tail_ptr & ring->hw_ptr_mask, ring->hw_addr+MQNIC_QUEUE_TAIL_PTR_REG);
// set size and activate queue
iowrite32(ilog2(ring->size) | MQNIC_QUEUE_ACTIVE_MASK, ring->hw_addr+MQNIC_QUEUE_ACTIVE_LOG_SIZE_REG);
iowrite32(ilog2(ring->size) | (ring->log_desc_block_size << 8) | MQNIC_QUEUE_ACTIVE_MASK, ring->hw_addr+MQNIC_QUEUE_ACTIVE_LOG_SIZE_REG);
mqnic_refill_rx_buffers(priv, ring);
@ -140,7 +144,7 @@ int mqnic_activate_rx_ring(struct mqnic_priv *priv, struct mqnic_ring *ring, int
void mqnic_deactivate_rx_ring(struct mqnic_priv *priv, struct mqnic_ring *ring)
{
// deactivate queue
iowrite32(ilog2(ring->size), ring->hw_addr+MQNIC_QUEUE_ACTIVE_LOG_SIZE_REG);
iowrite32(ilog2(ring->size) | (ring->log_desc_block_size << 8), ring->hw_addr+MQNIC_QUEUE_ACTIVE_LOG_SIZE_REG);
}
bool mqnic_is_rx_ring_empty(const struct mqnic_ring *ring)

10
modules/mqnic/mqnic_tx.c
View File

@ -52,6 +52,10 @@ int mqnic_create_tx_ring(struct mqnic_priv *priv, struct mqnic_ring **ring_ptr,
ring->size_mask = ring->size-1;
ring->stride = roundup_pow_of_two(stride);
ring->desc_block_size = ring->stride/MQNIC_DESC_SIZE;
ring->log_desc_block_size = ring->desc_block_size < 2 ? 0 : ilog2(ring->desc_block_size-1)+1;
ring->desc_block_size = 1 << ring->log_desc_block_size;
ring->tx_info = kvzalloc(sizeof(*ring->tx_info)*ring->size, GFP_KERNEL);
if (!ring->tx_info)
{
@ -89,7 +93,7 @@ int mqnic_create_tx_ring(struct mqnic_priv *priv, struct mqnic_ring **ring_ptr,
iowrite32(ring->head_ptr & ring->hw_ptr_mask, ring->hw_addr+MQNIC_QUEUE_HEAD_PTR_REG);
iowrite32(ring->tail_ptr & ring->hw_ptr_mask, ring->hw_addr+MQNIC_QUEUE_TAIL_PTR_REG);
// set size
iowrite32(ilog2(ring->size), ring->hw_addr+MQNIC_QUEUE_ACTIVE_LOG_SIZE_REG);
iowrite32(ilog2(ring->size) | (ring->log_desc_block_size << 8), ring->hw_addr+MQNIC_QUEUE_ACTIVE_LOG_SIZE_REG);
*ring_ptr = ring;
return 0;
@ -132,7 +136,7 @@ int mqnic_activate_tx_ring(struct mqnic_priv *priv, struct mqnic_ring *ring, int
iowrite32(ring->head_ptr & ring->hw_ptr_mask, ring->hw_addr+MQNIC_QUEUE_HEAD_PTR_REG);
iowrite32(ring->tail_ptr & ring->hw_ptr_mask, ring->hw_addr+MQNIC_QUEUE_TAIL_PTR_REG);
// set size and activate queue
iowrite32(ilog2(ring->size) | MQNIC_QUEUE_ACTIVE_MASK, ring->hw_addr+MQNIC_QUEUE_ACTIVE_LOG_SIZE_REG);
iowrite32(ilog2(ring->size) | (ring->log_desc_block_size << 8) | MQNIC_QUEUE_ACTIVE_MASK, ring->hw_addr+MQNIC_QUEUE_ACTIVE_LOG_SIZE_REG);
return 0;
}
@ -140,7 +144,7 @@ int mqnic_activate_tx_ring(struct mqnic_priv *priv, struct mqnic_ring *ring, int
void mqnic_deactivate_tx_ring(struct mqnic_priv *priv, struct mqnic_ring *ring)
{
// deactivate queue
iowrite32(ilog2(ring->size), ring->hw_addr+MQNIC_QUEUE_ACTIVE_LOG_SIZE_REG);
iowrite32(ilog2(ring->size) | (ring->log_desc_block_size << 8), ring->hw_addr+MQNIC_QUEUE_ACTIVE_LOG_SIZE_REG);
}
bool mqnic_is_tx_ring_empty(const struct mqnic_ring *ring)