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qed: Chain support for external PBL

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iWARP would require the chains to allocate/free their PBL memory
independently, so add the infrastructure to provide it externally.

Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Mintz, Yuval
2017-06-20 16:00:00 +03:00
committed by David S. Miller
parent 8917a777be
commit 1a4a69751f
10 changed files with 56 additions and 28 deletions
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7
include/linux/qed/qed_chain.h
View File

@@ -80,6 +80,11 @@ struct qed_chain_pbl_u32 {
u32 cons_page_idx;
};
struct qed_chain_ext_pbl {
dma_addr_t p_pbl_phys;
void *p_pbl_virt;
};
struct qed_chain_u16 {
/* Cyclic index of next element to produce/consme */
u16 prod_idx;
@@ -155,6 +160,8 @@ struct qed_chain {
u32 size;
u8 intended_use;
bool b_external_pbl;
};
#define QED_CHAIN_PBL_ENTRY_SIZE (8)

3
include/linux/qed/qed_if.h
View File

@@ -634,7 +634,8 @@ struct qed_common_ops {
enum qed_chain_cnt_type cnt_type,
u32 num_elems,
size_t elem_size,
struct qed_chain *p_chain);
struct qed_chain *p_chain,
struct qed_chain_ext_pbl *ext_pbl);
void (*chain_free)(struct qed_dev *cdev,
struct qed_chain *p_chain);