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334 lines
9.5 KiB
334 lines
9.5 KiB
// SPDX-License-Identifier: GPL-2.0 |
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/* Copyright(c) 2013 - 2018 Intel Corporation. */ |
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#include "i40e.h" |
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#include "i40e_osdep.h" |
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#include "i40e_register.h" |
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#include "i40e_status.h" |
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#include "i40e_alloc.h" |
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#include "i40e_hmc.h" |
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#include "i40e_type.h" |
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/** |
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* i40e_add_sd_table_entry - Adds a segment descriptor to the table |
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* @hw: pointer to our hw struct |
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* @hmc_info: pointer to the HMC configuration information struct |
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* @sd_index: segment descriptor index to manipulate |
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* @type: what type of segment descriptor we're manipulating |
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* @direct_mode_sz: size to alloc in direct mode |
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**/ |
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i40e_status i40e_add_sd_table_entry(struct i40e_hw *hw, |
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struct i40e_hmc_info *hmc_info, |
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u32 sd_index, |
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enum i40e_sd_entry_type type, |
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u64 direct_mode_sz) |
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{ |
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enum i40e_memory_type mem_type __attribute__((unused)); |
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struct i40e_hmc_sd_entry *sd_entry; |
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bool dma_mem_alloc_done = false; |
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struct i40e_dma_mem mem; |
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i40e_status ret_code = I40E_SUCCESS; |
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u64 alloc_len; |
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if (NULL == hmc_info->sd_table.sd_entry) { |
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ret_code = I40E_ERR_BAD_PTR; |
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hw_dbg(hw, "i40e_add_sd_table_entry: bad sd_entry\n"); |
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goto exit; |
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} |
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if (sd_index >= hmc_info->sd_table.sd_cnt) { |
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ret_code = I40E_ERR_INVALID_SD_INDEX; |
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hw_dbg(hw, "i40e_add_sd_table_entry: bad sd_index\n"); |
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goto exit; |
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} |
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sd_entry = &hmc_info->sd_table.sd_entry[sd_index]; |
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if (!sd_entry->valid) { |
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if (I40E_SD_TYPE_PAGED == type) { |
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mem_type = i40e_mem_pd; |
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alloc_len = I40E_HMC_PAGED_BP_SIZE; |
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} else { |
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mem_type = i40e_mem_bp_jumbo; |
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alloc_len = direct_mode_sz; |
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} |
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/* allocate a 4K pd page or 2M backing page */ |
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ret_code = i40e_allocate_dma_mem(hw, &mem, mem_type, alloc_len, |
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I40E_HMC_PD_BP_BUF_ALIGNMENT); |
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if (ret_code) |
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goto exit; |
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dma_mem_alloc_done = true; |
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if (I40E_SD_TYPE_PAGED == type) { |
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ret_code = i40e_allocate_virt_mem(hw, |
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&sd_entry->u.pd_table.pd_entry_virt_mem, |
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sizeof(struct i40e_hmc_pd_entry) * 512); |
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if (ret_code) |
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goto exit; |
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sd_entry->u.pd_table.pd_entry = |
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(struct i40e_hmc_pd_entry *) |
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sd_entry->u.pd_table.pd_entry_virt_mem.va; |
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sd_entry->u.pd_table.pd_page_addr = mem; |
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} else { |
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sd_entry->u.bp.addr = mem; |
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sd_entry->u.bp.sd_pd_index = sd_index; |
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} |
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/* initialize the sd entry */ |
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hmc_info->sd_table.sd_entry[sd_index].entry_type = type; |
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/* increment the ref count */ |
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I40E_INC_SD_REFCNT(&hmc_info->sd_table); |
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} |
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/* Increment backing page reference count */ |
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if (I40E_SD_TYPE_DIRECT == sd_entry->entry_type) |
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I40E_INC_BP_REFCNT(&sd_entry->u.bp); |
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exit: |
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if (ret_code) |
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if (dma_mem_alloc_done) |
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i40e_free_dma_mem(hw, &mem); |
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return ret_code; |
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} |
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/** |
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* i40e_add_pd_table_entry - Adds page descriptor to the specified table |
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* @hw: pointer to our HW structure |
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* @hmc_info: pointer to the HMC configuration information structure |
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* @pd_index: which page descriptor index to manipulate |
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* @rsrc_pg: if not NULL, use preallocated page instead of allocating new one. |
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* |
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* This function: |
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* 1. Initializes the pd entry |
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* 2. Adds pd_entry in the pd_table |
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* 3. Mark the entry valid in i40e_hmc_pd_entry structure |
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* 4. Initializes the pd_entry's ref count to 1 |
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* assumptions: |
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* 1. The memory for pd should be pinned down, physically contiguous and |
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* aligned on 4K boundary and zeroed memory. |
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* 2. It should be 4K in size. |
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**/ |
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i40e_status i40e_add_pd_table_entry(struct i40e_hw *hw, |
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struct i40e_hmc_info *hmc_info, |
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u32 pd_index, |
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struct i40e_dma_mem *rsrc_pg) |
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{ |
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i40e_status ret_code = 0; |
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struct i40e_hmc_pd_table *pd_table; |
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struct i40e_hmc_pd_entry *pd_entry; |
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struct i40e_dma_mem mem; |
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struct i40e_dma_mem *page = &mem; |
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u32 sd_idx, rel_pd_idx; |
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u64 *pd_addr; |
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u64 page_desc; |
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if (pd_index / I40E_HMC_PD_CNT_IN_SD >= hmc_info->sd_table.sd_cnt) { |
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ret_code = I40E_ERR_INVALID_PAGE_DESC_INDEX; |
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hw_dbg(hw, "i40e_add_pd_table_entry: bad pd_index\n"); |
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goto exit; |
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} |
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/* find corresponding sd */ |
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sd_idx = (pd_index / I40E_HMC_PD_CNT_IN_SD); |
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if (I40E_SD_TYPE_PAGED != |
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hmc_info->sd_table.sd_entry[sd_idx].entry_type) |
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goto exit; |
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rel_pd_idx = (pd_index % I40E_HMC_PD_CNT_IN_SD); |
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pd_table = &hmc_info->sd_table.sd_entry[sd_idx].u.pd_table; |
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pd_entry = &pd_table->pd_entry[rel_pd_idx]; |
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if (!pd_entry->valid) { |
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if (rsrc_pg) { |
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pd_entry->rsrc_pg = true; |
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page = rsrc_pg; |
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} else { |
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/* allocate a 4K backing page */ |
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ret_code = i40e_allocate_dma_mem(hw, page, i40e_mem_bp, |
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I40E_HMC_PAGED_BP_SIZE, |
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I40E_HMC_PD_BP_BUF_ALIGNMENT); |
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if (ret_code) |
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goto exit; |
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pd_entry->rsrc_pg = false; |
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} |
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pd_entry->bp.addr = *page; |
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pd_entry->bp.sd_pd_index = pd_index; |
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pd_entry->bp.entry_type = I40E_SD_TYPE_PAGED; |
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/* Set page address and valid bit */ |
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page_desc = page->pa | 0x1; |
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pd_addr = (u64 *)pd_table->pd_page_addr.va; |
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pd_addr += rel_pd_idx; |
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/* Add the backing page physical address in the pd entry */ |
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memcpy(pd_addr, &page_desc, sizeof(u64)); |
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pd_entry->sd_index = sd_idx; |
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pd_entry->valid = true; |
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I40E_INC_PD_REFCNT(pd_table); |
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} |
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I40E_INC_BP_REFCNT(&pd_entry->bp); |
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exit: |
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return ret_code; |
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} |
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/** |
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* i40e_remove_pd_bp - remove a backing page from a page descriptor |
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* @hw: pointer to our HW structure |
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* @hmc_info: pointer to the HMC configuration information structure |
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* @idx: the page index |
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* |
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* This function: |
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* 1. Marks the entry in pd tabe (for paged address mode) or in sd table |
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* (for direct address mode) invalid. |
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* 2. Write to register PMPDINV to invalidate the backing page in FV cache |
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* 3. Decrement the ref count for the pd _entry |
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* assumptions: |
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* 1. Caller can deallocate the memory used by backing storage after this |
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* function returns. |
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**/ |
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i40e_status i40e_remove_pd_bp(struct i40e_hw *hw, |
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struct i40e_hmc_info *hmc_info, |
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u32 idx) |
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{ |
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i40e_status ret_code = 0; |
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struct i40e_hmc_pd_entry *pd_entry; |
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struct i40e_hmc_pd_table *pd_table; |
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struct i40e_hmc_sd_entry *sd_entry; |
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u32 sd_idx, rel_pd_idx; |
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u64 *pd_addr; |
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/* calculate index */ |
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sd_idx = idx / I40E_HMC_PD_CNT_IN_SD; |
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rel_pd_idx = idx % I40E_HMC_PD_CNT_IN_SD; |
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if (sd_idx >= hmc_info->sd_table.sd_cnt) { |
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ret_code = I40E_ERR_INVALID_PAGE_DESC_INDEX; |
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hw_dbg(hw, "i40e_remove_pd_bp: bad idx\n"); |
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goto exit; |
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} |
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sd_entry = &hmc_info->sd_table.sd_entry[sd_idx]; |
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if (I40E_SD_TYPE_PAGED != sd_entry->entry_type) { |
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ret_code = I40E_ERR_INVALID_SD_TYPE; |
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hw_dbg(hw, "i40e_remove_pd_bp: wrong sd_entry type\n"); |
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goto exit; |
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} |
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/* get the entry and decrease its ref counter */ |
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pd_table = &hmc_info->sd_table.sd_entry[sd_idx].u.pd_table; |
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pd_entry = &pd_table->pd_entry[rel_pd_idx]; |
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I40E_DEC_BP_REFCNT(&pd_entry->bp); |
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if (pd_entry->bp.ref_cnt) |
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goto exit; |
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/* mark the entry invalid */ |
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pd_entry->valid = false; |
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I40E_DEC_PD_REFCNT(pd_table); |
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pd_addr = (u64 *)pd_table->pd_page_addr.va; |
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pd_addr += rel_pd_idx; |
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memset(pd_addr, 0, sizeof(u64)); |
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I40E_INVALIDATE_PF_HMC_PD(hw, sd_idx, idx); |
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/* free memory here */ |
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if (!pd_entry->rsrc_pg) |
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ret_code = i40e_free_dma_mem(hw, &pd_entry->bp.addr); |
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if (ret_code) |
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goto exit; |
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if (!pd_table->ref_cnt) |
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i40e_free_virt_mem(hw, &pd_table->pd_entry_virt_mem); |
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exit: |
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return ret_code; |
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} |
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/** |
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* i40e_prep_remove_sd_bp - Prepares to remove a backing page from a sd entry |
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* @hmc_info: pointer to the HMC configuration information structure |
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* @idx: the page index |
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**/ |
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i40e_status i40e_prep_remove_sd_bp(struct i40e_hmc_info *hmc_info, |
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u32 idx) |
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{ |
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i40e_status ret_code = 0; |
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struct i40e_hmc_sd_entry *sd_entry; |
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/* get the entry and decrease its ref counter */ |
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sd_entry = &hmc_info->sd_table.sd_entry[idx]; |
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I40E_DEC_BP_REFCNT(&sd_entry->u.bp); |
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if (sd_entry->u.bp.ref_cnt) { |
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ret_code = I40E_ERR_NOT_READY; |
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goto exit; |
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} |
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I40E_DEC_SD_REFCNT(&hmc_info->sd_table); |
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/* mark the entry invalid */ |
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sd_entry->valid = false; |
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exit: |
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return ret_code; |
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} |
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/** |
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* i40e_remove_sd_bp_new - Removes a backing page from a segment descriptor |
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* @hw: pointer to our hw struct |
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* @hmc_info: pointer to the HMC configuration information structure |
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* @idx: the page index |
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* @is_pf: used to distinguish between VF and PF |
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**/ |
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i40e_status i40e_remove_sd_bp_new(struct i40e_hw *hw, |
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struct i40e_hmc_info *hmc_info, |
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u32 idx, bool is_pf) |
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{ |
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struct i40e_hmc_sd_entry *sd_entry; |
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if (!is_pf) |
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return I40E_NOT_SUPPORTED; |
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/* get the entry and decrease its ref counter */ |
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sd_entry = &hmc_info->sd_table.sd_entry[idx]; |
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I40E_CLEAR_PF_SD_ENTRY(hw, idx, I40E_SD_TYPE_DIRECT); |
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return i40e_free_dma_mem(hw, &sd_entry->u.bp.addr); |
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} |
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/** |
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* i40e_prep_remove_pd_page - Prepares to remove a PD page from sd entry. |
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* @hmc_info: pointer to the HMC configuration information structure |
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* @idx: segment descriptor index to find the relevant page descriptor |
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**/ |
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i40e_status i40e_prep_remove_pd_page(struct i40e_hmc_info *hmc_info, |
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u32 idx) |
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{ |
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i40e_status ret_code = 0; |
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struct i40e_hmc_sd_entry *sd_entry; |
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sd_entry = &hmc_info->sd_table.sd_entry[idx]; |
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if (sd_entry->u.pd_table.ref_cnt) { |
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ret_code = I40E_ERR_NOT_READY; |
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goto exit; |
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} |
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/* mark the entry invalid */ |
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sd_entry->valid = false; |
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I40E_DEC_SD_REFCNT(&hmc_info->sd_table); |
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exit: |
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return ret_code; |
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} |
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/** |
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* i40e_remove_pd_page_new - Removes a PD page from sd entry. |
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* @hw: pointer to our hw struct |
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* @hmc_info: pointer to the HMC configuration information structure |
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* @idx: segment descriptor index to find the relevant page descriptor |
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* @is_pf: used to distinguish between VF and PF |
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**/ |
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i40e_status i40e_remove_pd_page_new(struct i40e_hw *hw, |
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struct i40e_hmc_info *hmc_info, |
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u32 idx, bool is_pf) |
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{ |
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struct i40e_hmc_sd_entry *sd_entry; |
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if (!is_pf) |
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return I40E_NOT_SUPPORTED; |
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sd_entry = &hmc_info->sd_table.sd_entry[idx]; |
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I40E_CLEAR_PF_SD_ENTRY(hw, idx, I40E_SD_TYPE_PAGED); |
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return i40e_free_dma_mem(hw, &sd_entry->u.pd_table.pd_page_addr); |
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}
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