diff options
author | 2016-04-11 10:41:07 +0300 | |
---|---|---|
committer | 2016-04-13 08:17:18 +0300 | |
commit | e09b41010ba33a20a87472ee821fa407a5b8da36 (patch) | |
tree | d10dc367189862e7ca5c592f033dc3726e1df4e3 /kernel/drivers/net/ethernet/intel/i40e/i40e_hmc.c | |
parent | f93b97fd65072de626c074dbe099a1fff05ce060 (diff) |
These changes are the raw update to linux-4.4.6-rt14. Kernel sources
are taken from kernel.org, and rt patch from the rt wiki download page.
During the rebasing, the following patch collided:
Force tick interrupt and get rid of softirq magic(I70131fb85).
Collisions have been removed because its logic was found on the
source already.
Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769
Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>
Diffstat (limited to 'kernel/drivers/net/ethernet/intel/i40e/i40e_hmc.c')
-rw-r--r-- | kernel/drivers/net/ethernet/intel/i40e/i40e_hmc.c | 67 |
1 files changed, 32 insertions, 35 deletions
diff --git a/kernel/drivers/net/ethernet/intel/i40e/i40e_hmc.c b/kernel/drivers/net/ethernet/intel/i40e/i40e_hmc.c index 9b987ccc9..5ebe12d56 100644 --- a/kernel/drivers/net/ethernet/intel/i40e/i40e_hmc.c +++ b/kernel/drivers/net/ethernet/intel/i40e/i40e_hmc.c @@ -116,6 +116,7 @@ exit: * @hw: pointer to our HW structure * @hmc_info: pointer to the HMC configuration information structure * @pd_index: which page descriptor index to manipulate + * @rsrc_pg: if not NULL, use preallocated page instead of allocating new one. * * This function: * 1. Initializes the pd entry @@ -129,12 +130,14 @@ exit: **/ i40e_status i40e_add_pd_table_entry(struct i40e_hw *hw, struct i40e_hmc_info *hmc_info, - u32 pd_index) + u32 pd_index, + struct i40e_dma_mem *rsrc_pg) { i40e_status ret_code = 0; struct i40e_hmc_pd_table *pd_table; struct i40e_hmc_pd_entry *pd_entry; struct i40e_dma_mem mem; + struct i40e_dma_mem *page = &mem; u32 sd_idx, rel_pd_idx; u64 *pd_addr; u64 page_desc; @@ -155,18 +158,24 @@ i40e_status i40e_add_pd_table_entry(struct i40e_hw *hw, pd_table = &hmc_info->sd_table.sd_entry[sd_idx].u.pd_table; pd_entry = &pd_table->pd_entry[rel_pd_idx]; if (!pd_entry->valid) { - /* allocate a 4K backing page */ - ret_code = i40e_allocate_dma_mem(hw, &mem, i40e_mem_bp, - I40E_HMC_PAGED_BP_SIZE, - I40E_HMC_PD_BP_BUF_ALIGNMENT); - if (ret_code) - goto exit; + if (rsrc_pg) { + pd_entry->rsrc_pg = true; + page = rsrc_pg; + } else { + /* allocate a 4K backing page */ + ret_code = i40e_allocate_dma_mem(hw, page, i40e_mem_bp, + I40E_HMC_PAGED_BP_SIZE, + I40E_HMC_PD_BP_BUF_ALIGNMENT); + if (ret_code) + goto exit; + pd_entry->rsrc_pg = false; + } - pd_entry->bp.addr = mem; + pd_entry->bp.addr = *page; pd_entry->bp.sd_pd_index = pd_index; pd_entry->bp.entry_type = I40E_SD_TYPE_PAGED; /* Set page address and valid bit */ - page_desc = mem.pa | 0x1; + page_desc = page->pa | 0x1; pd_addr = (u64 *)pd_table->pd_page_addr.va; pd_addr += rel_pd_idx; @@ -240,7 +249,8 @@ i40e_status i40e_remove_pd_bp(struct i40e_hw *hw, I40E_INVALIDATE_PF_HMC_PD(hw, sd_idx, idx); /* free memory here */ - ret_code = i40e_free_dma_mem(hw, &(pd_entry->bp.addr)); + if (!pd_entry->rsrc_pg) + ret_code = i40e_free_dma_mem(hw, &pd_entry->bp.addr); if (ret_code) goto exit; if (!pd_table->ref_cnt) @@ -287,21 +297,15 @@ i40e_status i40e_remove_sd_bp_new(struct i40e_hw *hw, u32 idx, bool is_pf) { struct i40e_hmc_sd_entry *sd_entry; - i40e_status ret_code = 0; + + if (!is_pf) + return I40E_NOT_SUPPORTED; /* get the entry and decrease its ref counter */ sd_entry = &hmc_info->sd_table.sd_entry[idx]; - if (is_pf) { - I40E_CLEAR_PF_SD_ENTRY(hw, idx, I40E_SD_TYPE_DIRECT); - } else { - ret_code = I40E_NOT_SUPPORTED; - goto exit; - } - ret_code = i40e_free_dma_mem(hw, &(sd_entry->u.bp.addr)); - if (ret_code) - goto exit; -exit: - return ret_code; + I40E_CLEAR_PF_SD_ENTRY(hw, idx, I40E_SD_TYPE_DIRECT); + + return i40e_free_dma_mem(hw, &sd_entry->u.bp.addr); } /** @@ -341,20 +345,13 @@ i40e_status i40e_remove_pd_page_new(struct i40e_hw *hw, struct i40e_hmc_info *hmc_info, u32 idx, bool is_pf) { - i40e_status ret_code = 0; struct i40e_hmc_sd_entry *sd_entry; + if (!is_pf) + return I40E_NOT_SUPPORTED; + sd_entry = &hmc_info->sd_table.sd_entry[idx]; - if (is_pf) { - I40E_CLEAR_PF_SD_ENTRY(hw, idx, I40E_SD_TYPE_PAGED); - } else { - ret_code = I40E_NOT_SUPPORTED; - goto exit; - } - /* free memory here */ - ret_code = i40e_free_dma_mem(hw, &(sd_entry->u.pd_table.pd_page_addr)); - if (ret_code) - goto exit; -exit: - return ret_code; + I40E_CLEAR_PF_SD_ENTRY(hw, idx, I40E_SD_TYPE_PAGED); + + return i40e_free_dma_mem(hw, &sd_entry->u.pd_table.pd_page_addr); } |