358 lines
11 KiB
C
358 lines
11 KiB
C
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/*******************************************************************************
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*
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* Intel Ethernet Controller XL710 Family Linux Driver
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* Copyright(c) 2013 - 2014 Intel Corporation.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* The full GNU General Public License is included in this distribution in
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* the file called "COPYING".
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*
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* Contact Information:
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* e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
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* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
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*
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******************************************************************************/
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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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* @is_pf: distinguishes a VF from a PF
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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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|
{
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||
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struct i40e_hmc_sd_entry *sd_entry;
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|
|
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if (!is_pf)
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return I40E_NOT_SUPPORTED;
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||
|
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||
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sd_entry = &hmc_info->sd_table.sd_entry[idx];
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||
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I40E_CLEAR_PF_SD_ENTRY(hw, idx, I40E_SD_TYPE_PAGED);
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||
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||
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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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