redonkable/alistair23-linux
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qed: simplify initialization of the chains with an external PBL

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Fill PBL table parameters for chains with an external PBL data earlier on
qed_chain_init_params() rather than on allocation itself. This simplifies
allocation code and allows to extend struct ext_pbl for other chain types.

Signed-off-by: Alexander Lobakin <alobakin@marvell.com>
Signed-off-by: Igor Russkikh <irusskikh@marvell.com>
Signed-off-by: Michal Kalderon <michal.kalderon@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Alexander Lobakin 2020-07-23 01:10:37 +03:00 committed by David S. Miller
parent 5e776d8016
commit c3a321b06a
1 changed files with 19 additions and 18 deletions
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37
drivers/net/ethernet/qlogic/qed/qed_chain.c
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@ -11,7 +11,8 @@ static void qed_chain_init_params(struct qed_chain *chain,
u32 page_cnt, u8 elem_size,
enum qed_chain_use_mode intended_use,
enum qed_chain_mode mode,
enum qed_chain_cnt_type cnt_type)
enum qed_chain_cnt_type cnt_type,
const struct qed_chain_ext_pbl *ext_pbl)
{
memset(chain, 0, sizeof(*chain));
@ -31,6 +32,13 @@ static void qed_chain_init_params(struct qed_chain *chain,
chain->page_cnt = page_cnt;
chain->capacity = chain->usable_per_page * page_cnt;
chain->size = chain->elem_per_page * page_cnt;
if (ext_pbl && ext_pbl->p_pbl_virt) {
chain->pbl_sp.table_virt = ext_pbl->p_pbl_virt;
chain->pbl_sp.table_phys = ext_pbl->p_pbl_phys;
chain->b_external_pbl = true;
}
}
static void qed_chain_init_next_ptr_elem(const struct qed_chain *chain,
@ -230,8 +238,7 @@ static int qed_chain_alloc_single(struct qed_dev *cdev,
return 0;
}
static int qed_chain_alloc_pbl(struct qed_dev *cdev, struct qed_chain *chain,
struct qed_chain_ext_pbl *ext_pbl)
static int qed_chain_alloc_pbl(struct qed_dev *cdev, struct qed_chain *chain)
{
struct device *dev = &cdev->pdev->dev;
struct addr_tbl_entry *addr_tbl;
@ -253,21 +260,14 @@ static int qed_chain_alloc_pbl(struct qed_dev *cdev, struct qed_chain *chain,
chain->pbl.pp_addr_tbl = addr_tbl;
if (ext_pbl) {
size = 0;
pbl_virt = ext_pbl->p_pbl_virt;
pbl_phys = ext_pbl->p_pbl_phys;
if (chain->b_external_pbl)
goto alloc_pages;
chain->b_external_pbl = true;
} else {
size = array_size(page_cnt, sizeof(*pbl_virt));
if (unlikely(size == SIZE_MAX))
return -EOVERFLOW;
pbl_virt = dma_alloc_coherent(dev, size, &pbl_phys,
GFP_KERNEL);
}
size = array_size(page_cnt, sizeof(*pbl_virt));
if (unlikely(size == SIZE_MAX))
return -EOVERFLOW;
pbl_virt = dma_alloc_coherent(dev, size, &pbl_phys, GFP_KERNEL);
if (!pbl_virt)
return -ENOMEM;
@ -275,6 +275,7 @@ static int qed_chain_alloc_pbl(struct qed_dev *cdev, struct qed_chain *chain,
chain->pbl_sp.table_phys = pbl_phys;
chain->pbl_sp.table_size = size;
alloc_pages:
for (i = 0; i < page_cnt; i++) {
virt = dma_alloc_coherent(dev, QED_CHAIN_PAGE_SIZE, &phys,
GFP_KERNEL);
@ -325,7 +326,7 @@ int qed_chain_alloc(struct qed_dev *cdev,
}
qed_chain_init_params(chain, page_cnt, elem_size, intended_use, mode,
cnt_type);
cnt_type, ext_pbl);
switch (mode) {
case QED_CHAIN_MODE_NEXT_PTR:
@ -335,7 +336,7 @@ int qed_chain_alloc(struct qed_dev *cdev,
rc = qed_chain_alloc_single(cdev, chain);
break;
case QED_CHAIN_MODE_PBL:
rc = qed_chain_alloc_pbl(cdev, chain, ext_pbl);
rc = qed_chain_alloc_pbl(cdev, chain);
break;
default:
return -EINVAL;