diff options
Diffstat (limited to 'drivers/infiniband/hw/i40iw/i40iw_hmc.c')
| -rw-r--r-- | drivers/infiniband/hw/i40iw/i40iw_hmc.c | 821 |
1 files changed, 0 insertions, 821 deletions
diff --git a/drivers/infiniband/hw/i40iw/i40iw_hmc.c b/drivers/infiniband/hw/i40iw/i40iw_hmc.c deleted file mode 100644 index b44bfc1d239b..000000000000 --- a/drivers/infiniband/hw/i40iw/i40iw_hmc.c +++ /dev/null @@ -1,821 +0,0 @@ -/******************************************************************************* -* -* Copyright (c) 2015-2016 Intel Corporation. All rights reserved. -* -* This software is available to you under a choice of one of two -* licenses. You may choose to be licensed under the terms of the GNU -* General Public License (GPL) Version 2, available from the file -* COPYING in the main directory of this source tree, or the -* OpenFabrics.org BSD license below: -* -* Redistribution and use in source and binary forms, with or -* without modification, are permitted provided that the following -* conditions are met: -* -* - Redistributions of source code must retain the above -* copyright notice, this list of conditions and the following -* disclaimer. -* -* - Redistributions in binary form must reproduce the above -* copyright notice, this list of conditions and the following -* disclaimer in the documentation and/or other materials -* provided with the distribution. -* -* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, -* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF -* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND -* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS -* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN -* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN -* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE -* SOFTWARE. -* -*******************************************************************************/ - -#include "i40iw_osdep.h" -#include "i40iw_register.h" -#include "i40iw_status.h" -#include "i40iw_hmc.h" -#include "i40iw_d.h" -#include "i40iw_type.h" -#include "i40iw_p.h" -#include "i40iw_vf.h" -#include "i40iw_virtchnl.h" - -/** - * i40iw_find_sd_index_limit - finds segment descriptor index limit - * @hmc_info: pointer to the HMC configuration information structure - * @type: type of HMC resources we're searching - * @idx: starting index for the object - * @cnt: number of objects we're trying to create - * @sd_idx: pointer to return index of the segment descriptor in question - * @sd_limit: pointer to return the maximum number of segment descriptors - * - * This function calculates the segment descriptor index and index limit - * for the resource defined by i40iw_hmc_rsrc_type. - */ - -static inline void i40iw_find_sd_index_limit(struct i40iw_hmc_info *hmc_info, - u32 type, - u32 idx, - u32 cnt, - u32 *sd_idx, - u32 *sd_limit) -{ - u64 fpm_addr, fpm_limit; - - fpm_addr = hmc_info->hmc_obj[(type)].base + - hmc_info->hmc_obj[type].size * idx; - fpm_limit = fpm_addr + hmc_info->hmc_obj[type].size * cnt; - *sd_idx = (u32)(fpm_addr / I40IW_HMC_DIRECT_BP_SIZE); - *sd_limit = (u32)((fpm_limit - 1) / I40IW_HMC_DIRECT_BP_SIZE); - *sd_limit += 1; -} - -/** - * i40iw_find_pd_index_limit - finds page descriptor index limit - * @hmc_info: pointer to the HMC configuration information struct - * @type: HMC resource type we're examining - * @idx: starting index for the object - * @cnt: number of objects we're trying to create - * @pd_idx: pointer to return page descriptor index - * @pd_limit: pointer to return page descriptor index limit - * - * Calculates the page descriptor index and index limit for the resource - * defined by i40iw_hmc_rsrc_type. - */ - -static inline void i40iw_find_pd_index_limit(struct i40iw_hmc_info *hmc_info, - u32 type, - u32 idx, - u32 cnt, - u32 *pd_idx, - u32 *pd_limit) -{ - u64 fpm_adr, fpm_limit; - - fpm_adr = hmc_info->hmc_obj[type].base + - hmc_info->hmc_obj[type].size * idx; - fpm_limit = fpm_adr + (hmc_info)->hmc_obj[(type)].size * (cnt); - *(pd_idx) = (u32)(fpm_adr / I40IW_HMC_PAGED_BP_SIZE); - *(pd_limit) = (u32)((fpm_limit - 1) / I40IW_HMC_PAGED_BP_SIZE); - *(pd_limit) += 1; -} - -/** - * i40iw_set_sd_entry - setup entry for sd programming - * @pa: physical addr - * @idx: sd index - * @type: paged or direct sd - * @entry: sd entry ptr - */ -static inline void i40iw_set_sd_entry(u64 pa, - u32 idx, - enum i40iw_sd_entry_type type, - struct update_sd_entry *entry) -{ - entry->data = pa | (I40IW_HMC_MAX_BP_COUNT << I40E_PFHMC_SDDATALOW_PMSDBPCOUNT_SHIFT) | - (((type == I40IW_SD_TYPE_PAGED) ? 0 : 1) << - I40E_PFHMC_SDDATALOW_PMSDTYPE_SHIFT) | - (1 << I40E_PFHMC_SDDATALOW_PMSDVALID_SHIFT); - entry->cmd = (idx | (1 << I40E_PFHMC_SDCMD_PMSDWR_SHIFT) | (1 << 15)); -} - -/** - * i40iw_clr_sd_entry - setup entry for sd clear - * @idx: sd index - * @type: paged or direct sd - * @entry: sd entry ptr - */ -static inline void i40iw_clr_sd_entry(u32 idx, enum i40iw_sd_entry_type type, - struct update_sd_entry *entry) -{ - entry->data = (I40IW_HMC_MAX_BP_COUNT << - I40E_PFHMC_SDDATALOW_PMSDBPCOUNT_SHIFT) | - (((type == I40IW_SD_TYPE_PAGED) ? 0 : 1) << - I40E_PFHMC_SDDATALOW_PMSDTYPE_SHIFT); - entry->cmd = (idx | (1 << I40E_PFHMC_SDCMD_PMSDWR_SHIFT) | (1 << 15)); -} - -/** - * i40iw_hmc_sd_one - setup 1 sd entry for cqp - * @dev: pointer to the device structure - * @hmc_fn_id: hmc's function id - * @pa: physical addr - * @sd_idx: sd index - * @type: paged or direct sd - * @setsd: flag to set or clear sd - */ -enum i40iw_status_code i40iw_hmc_sd_one(struct i40iw_sc_dev *dev, - u8 hmc_fn_id, - u64 pa, u32 sd_idx, - enum i40iw_sd_entry_type type, - bool setsd) -{ - struct i40iw_update_sds_info sdinfo; - - sdinfo.cnt = 1; - sdinfo.hmc_fn_id = hmc_fn_id; - if (setsd) - i40iw_set_sd_entry(pa, sd_idx, type, sdinfo.entry); - else - i40iw_clr_sd_entry(sd_idx, type, sdinfo.entry); - - return dev->cqp->process_cqp_sds(dev, &sdinfo); -} - -/** - * i40iw_hmc_sd_grp - setup group od sd entries for cqp - * @dev: pointer to the device structure - * @hmc_info: pointer to the HMC configuration information struct - * @sd_index: sd index - * @sd_cnt: number of sd entries - * @setsd: flag to set or clear sd - */ -static enum i40iw_status_code i40iw_hmc_sd_grp(struct i40iw_sc_dev *dev, - struct i40iw_hmc_info *hmc_info, - u32 sd_index, - u32 sd_cnt, - bool setsd) -{ - struct i40iw_hmc_sd_entry *sd_entry; - struct i40iw_update_sds_info sdinfo; - u64 pa; - u32 i; - enum i40iw_status_code ret_code = 0; - - memset(&sdinfo, 0, sizeof(sdinfo)); - sdinfo.hmc_fn_id = hmc_info->hmc_fn_id; - for (i = sd_index; i < sd_index + sd_cnt; i++) { - sd_entry = &hmc_info->sd_table.sd_entry[i]; - if (!sd_entry || - (!sd_entry->valid && setsd) || - (sd_entry->valid && !setsd)) - continue; - if (setsd) { - pa = (sd_entry->entry_type == I40IW_SD_TYPE_PAGED) ? - sd_entry->u.pd_table.pd_page_addr.pa : - sd_entry->u.bp.addr.pa; - i40iw_set_sd_entry(pa, i, sd_entry->entry_type, - &sdinfo.entry[sdinfo.cnt]); - } else { - i40iw_clr_sd_entry(i, sd_entry->entry_type, - &sdinfo.entry[sdinfo.cnt]); - } - sdinfo.cnt++; - if (sdinfo.cnt == I40IW_MAX_SD_ENTRIES) { - ret_code = dev->cqp->process_cqp_sds(dev, &sdinfo); - if (ret_code) { - i40iw_debug(dev, I40IW_DEBUG_HMC, - "i40iw_hmc_sd_grp: sd_programming failed err=%d\n", - ret_code); - return ret_code; - } - sdinfo.cnt = 0; - } - } - if (sdinfo.cnt) - ret_code = dev->cqp->process_cqp_sds(dev, &sdinfo); - - return ret_code; -} - -/** - * i40iw_vfdev_from_fpm - return vf dev ptr for hmc function id - * @dev: pointer to the device structure - * @hmc_fn_id: hmc's function id - */ -struct i40iw_vfdev *i40iw_vfdev_from_fpm(struct i40iw_sc_dev *dev, u8 hmc_fn_id) -{ - struct i40iw_vfdev *vf_dev = NULL; - u16 idx; - - for (idx = 0; idx < I40IW_MAX_PE_ENABLED_VF_COUNT; idx++) { - if (dev->vf_dev[idx] && - ((u8)dev->vf_dev[idx]->pmf_index == hmc_fn_id)) { - vf_dev = dev->vf_dev[idx]; - break; - } - } - return vf_dev; -} - -/** - * i40iw_vf_hmcinfo_from_fpm - get ptr to hmc for func_id - * @dev: pointer to the device structure - * @hmc_fn_id: hmc's function id - */ -struct i40iw_hmc_info *i40iw_vf_hmcinfo_from_fpm(struct i40iw_sc_dev *dev, - u8 hmc_fn_id) -{ - struct i40iw_hmc_info *hmc_info = NULL; - u16 idx; - - for (idx = 0; idx < I40IW_MAX_PE_ENABLED_VF_COUNT; idx++) { - if (dev->vf_dev[idx] && - ((u8)dev->vf_dev[idx]->pmf_index == hmc_fn_id)) { - hmc_info = &dev->vf_dev[idx]->hmc_info; - break; - } - } - return hmc_info; -} - -/** - * i40iw_hmc_finish_add_sd_reg - program sd entries for objects - * @dev: pointer to the device structure - * @info: create obj info - */ -static enum i40iw_status_code i40iw_hmc_finish_add_sd_reg(struct i40iw_sc_dev *dev, - struct i40iw_hmc_create_obj_info *info) -{ - if (info->start_idx >= info->hmc_info->hmc_obj[info->rsrc_type].cnt) - return I40IW_ERR_INVALID_HMC_OBJ_INDEX; - - if ((info->start_idx + info->count) > - info->hmc_info->hmc_obj[info->rsrc_type].cnt) - return I40IW_ERR_INVALID_HMC_OBJ_COUNT; - - if (!info->add_sd_cnt) - return 0; - - return i40iw_hmc_sd_grp(dev, info->hmc_info, - info->hmc_info->sd_indexes[0], - info->add_sd_cnt, true); -} - -/** - * i40iw_sc_create_hmc_obj - allocate backing store for hmc objects - * @dev: pointer to the device structure - * @info: pointer to i40iw_hmc_iw_create_obj_info struct - * - * This will allocate memory for PDs and backing pages and populate - * the sd and pd entries. - */ -enum i40iw_status_code i40iw_sc_create_hmc_obj(struct i40iw_sc_dev *dev, - struct i40iw_hmc_create_obj_info *info) -{ - struct i40iw_hmc_sd_entry *sd_entry; - u32 sd_idx, sd_lmt; - u32 pd_idx = 0, pd_lmt = 0; - u32 pd_idx1 = 0, pd_lmt1 = 0; - u32 i, j; - bool pd_error = false; - enum i40iw_status_code ret_code = 0; - - if (info->start_idx >= info->hmc_info->hmc_obj[info->rsrc_type].cnt) - return I40IW_ERR_INVALID_HMC_OBJ_INDEX; - - if ((info->start_idx + info->count) > - info->hmc_info->hmc_obj[info->rsrc_type].cnt) { - i40iw_debug(dev, I40IW_DEBUG_HMC, - "%s: error type %u, start = %u, req cnt %u, cnt = %u\n", - __func__, info->rsrc_type, info->start_idx, info->count, - info->hmc_info->hmc_obj[info->rsrc_type].cnt); - return I40IW_ERR_INVALID_HMC_OBJ_COUNT; - } - - if (!dev->is_pf) - return i40iw_vchnl_vf_add_hmc_objs(dev, info->rsrc_type, 0, info->count); - - i40iw_find_sd_index_limit(info->hmc_info, info->rsrc_type, - info->start_idx, info->count, - &sd_idx, &sd_lmt); - if (sd_idx >= info->hmc_info->sd_table.sd_cnt || - sd_lmt > info->hmc_info->sd_table.sd_cnt) { - return I40IW_ERR_INVALID_SD_INDEX; - } - i40iw_find_pd_index_limit(info->hmc_info, info->rsrc_type, - info->start_idx, info->count, &pd_idx, &pd_lmt); - - for (j = sd_idx; j < sd_lmt; j++) { - ret_code = i40iw_add_sd_table_entry(dev->hw, info->hmc_info, - j, - info->entry_type, - I40IW_HMC_DIRECT_BP_SIZE); - if (ret_code) - goto exit_sd_error; - sd_entry = &info->hmc_info->sd_table.sd_entry[j]; - - if ((sd_entry->entry_type == I40IW_SD_TYPE_PAGED) && - ((dev->hmc_info == info->hmc_info) && - (info->rsrc_type != I40IW_HMC_IW_PBLE))) { - pd_idx1 = max(pd_idx, (j * I40IW_HMC_MAX_BP_COUNT)); - pd_lmt1 = min(pd_lmt, - (j + 1) * I40IW_HMC_MAX_BP_COUNT); - for (i = pd_idx1; i < pd_lmt1; i++) { - /* update the pd table entry */ - ret_code = i40iw_add_pd_table_entry(dev->hw, info->hmc_info, - i, NULL); - if (ret_code) { - pd_error = true; - break; - } - } - if (pd_error) { - while (i && (i > pd_idx1)) { - i40iw_remove_pd_bp(dev->hw, info->hmc_info, (i - 1), - info->is_pf); - i--; - } - } - } - if (sd_entry->valid) - continue; - - info->hmc_info->sd_indexes[info->add_sd_cnt] = (u16)j; - info->add_sd_cnt++; - sd_entry->valid = true; - } - return i40iw_hmc_finish_add_sd_reg(dev, info); - -exit_sd_error: - while (j && (j > sd_idx)) { - sd_entry = &info->hmc_info->sd_table.sd_entry[j - 1]; - switch (sd_entry->entry_type) { - case I40IW_SD_TYPE_PAGED: - pd_idx1 = max(pd_idx, - (j - 1) * I40IW_HMC_MAX_BP_COUNT); - pd_lmt1 = min(pd_lmt, (j * I40IW_HMC_MAX_BP_COUNT)); - for (i = pd_idx1; i < pd_lmt1; i++) - i40iw_prep_remove_pd_page(info->hmc_info, i); - break; - case I40IW_SD_TYPE_DIRECT: - i40iw_prep_remove_pd_page(info->hmc_info, (j - 1)); - break; - default: - ret_code = I40IW_ERR_INVALID_SD_TYPE; - break; - } - j--; - } - - return ret_code; -} - -/** - * i40iw_finish_del_sd_reg - delete sd entries for objects - * @dev: pointer to the device structure - * @info: dele obj info - * @reset: true if called before reset - */ -static enum i40iw_status_code i40iw_finish_del_sd_reg(struct i40iw_sc_dev *dev, - struct i40iw_hmc_del_obj_info *info, - bool reset) -{ - struct i40iw_hmc_sd_entry *sd_entry; - enum i40iw_status_code ret_code = 0; - u32 i, sd_idx; - struct i40iw_dma_mem *mem; - - if (dev->is_pf && !reset) - ret_code = i40iw_hmc_sd_grp(dev, info->hmc_info, - info->hmc_info->sd_indexes[0], - info->del_sd_cnt, false); - - if (ret_code) - i40iw_debug(dev, I40IW_DEBUG_HMC, "%s: error cqp sd sd_grp\n", __func__); - - for (i = 0; i < info->del_sd_cnt; i++) { - sd_idx = info->hmc_info->sd_indexes[i]; - sd_entry = &info->hmc_info->sd_table.sd_entry[sd_idx]; - if (!sd_entry) - continue; - mem = (sd_entry->entry_type == I40IW_SD_TYPE_PAGED) ? - &sd_entry->u.pd_table.pd_page_addr : - &sd_entry->u.bp.addr; - - if (!mem || !mem->va) - i40iw_debug(dev, I40IW_DEBUG_HMC, "%s: error cqp sd mem\n", __func__); - else - i40iw_free_dma_mem(dev->hw, mem); - } - return ret_code; -} - -/** - * i40iw_sc_del_hmc_obj - remove pe hmc objects - * @dev: pointer to the device structure - * @info: pointer to i40iw_hmc_del_obj_info struct - * @reset: true if called before reset - * - * This will de-populate the SDs and PDs. It frees - * the memory for PDS and backing storage. After this function is returned, - * caller should deallocate memory allocated previously for - * book-keeping information about PDs and backing storage. - */ -enum i40iw_status_code i40iw_sc_del_hmc_obj(struct i40iw_sc_dev *dev, - struct i40iw_hmc_del_obj_info *info, - bool reset) -{ - struct i40iw_hmc_pd_table *pd_table; - u32 sd_idx, sd_lmt; - u32 pd_idx, pd_lmt, rel_pd_idx; - u32 i, j; - enum i40iw_status_code ret_code = 0; - - if (info->start_idx >= info->hmc_info->hmc_obj[info->rsrc_type].cnt) { - i40iw_debug(dev, I40IW_DEBUG_HMC, - "%s: error start_idx[%04d] >= [type %04d].cnt[%04d]\n", - __func__, info->start_idx, info->rsrc_type, - info->hmc_info->hmc_obj[info->rsrc_type].cnt); - return I40IW_ERR_INVALID_HMC_OBJ_INDEX; - } - - if ((info->start_idx + info->count) > - info->hmc_info->hmc_obj[info->rsrc_type].cnt) { - i40iw_debug(dev, I40IW_DEBUG_HMC, - "%s: error start_idx[%04d] + count %04d >= [type %04d].cnt[%04d]\n", - __func__, info->start_idx, info->count, - info->rsrc_type, - info->hmc_info->hmc_obj[info->rsrc_type].cnt); - return I40IW_ERR_INVALID_HMC_OBJ_COUNT; - } - if (!dev->is_pf) { - ret_code = i40iw_vchnl_vf_del_hmc_obj(dev, info->rsrc_type, 0, - info->count); - if (info->rsrc_type != I40IW_HMC_IW_PBLE) - return ret_code; - } - - i40iw_find_pd_index_limit(info->hmc_info, info->rsrc_type, - info->start_idx, info->count, &pd_idx, &pd_lmt); - - for (j = pd_idx; j < pd_lmt; j++) { - sd_idx = j / I40IW_HMC_PD_CNT_IN_SD; - - if (info->hmc_info->sd_table.sd_entry[sd_idx].entry_type != - I40IW_SD_TYPE_PAGED) - continue; - - rel_pd_idx = j % I40IW_HMC_PD_CNT_IN_SD; - pd_table = &info->hmc_info->sd_table.sd_entry[sd_idx].u.pd_table; - if (pd_table->pd_entry[rel_pd_idx].valid) { - ret_code = i40iw_remove_pd_bp(dev->hw, info->hmc_info, j, - info->is_pf); - if (ret_code) { - i40iw_debug(dev, I40IW_DEBUG_HMC, "%s: error\n", __func__); - return ret_code; - } - } - } - - i40iw_find_sd_index_limit(info->hmc_info, info->rsrc_type, - info->start_idx, info->count, &sd_idx, &sd_lmt); - if (sd_idx >= info->hmc_info->sd_table.sd_cnt || - sd_lmt > info->hmc_info->sd_table.sd_cnt) { - i40iw_debug(dev, I40IW_DEBUG_HMC, "%s: error invalid sd_idx\n", __func__); - return I40IW_ERR_INVALID_SD_INDEX; - } - - for (i = sd_idx; i < sd_lmt; i++) { - if (!info->hmc_info->sd_table.sd_entry[i].valid) - continue; - switch (info->hmc_info->sd_table.sd_entry[i].entry_type) { - case I40IW_SD_TYPE_DIRECT: - ret_code = i40iw_prep_remove_sd_bp(info->hmc_info, i); - if (!ret_code) { - info->hmc_info->sd_indexes[info->del_sd_cnt] = (u16)i; - info->del_sd_cnt++; - } - break; - case I40IW_SD_TYPE_PAGED: - ret_code = i40iw_prep_remove_pd_page(info->hmc_info, i); - if (!ret_code) { - info->hmc_info->sd_indexes[info->del_sd_cnt] = (u16)i; - info->del_sd_cnt++; - } - break; - default: - break; - } - } - return i40iw_finish_del_sd_reg(dev, info, reset); -} - -/** - * i40iw_add_sd_table_entry - Adds a segment descriptor to the table - * @hw: pointer to our hw struct - * @hmc_info: pointer to the HMC configuration information struct - * @sd_index: segment descriptor index to manipulate - * @type: what type of segment descriptor we're manipulating - * @direct_mode_sz: size to alloc in direct mode - */ -enum i40iw_status_code i40iw_add_sd_table_entry(struct i40iw_hw *hw, - struct i40iw_hmc_info *hmc_info, - u32 sd_index, - enum i40iw_sd_entry_type type, - u64 direct_mode_sz) -{ - enum i40iw_status_code ret_code = 0; - struct i40iw_hmc_sd_entry *sd_entry; - bool dma_mem_alloc_done = false; - struct i40iw_dma_mem mem; - u64 alloc_len; - - sd_entry = &hmc_info->sd_table.sd_entry[sd_index]; - if (!sd_entry->valid) { - if (type == I40IW_SD_TYPE_PAGED) - alloc_len = I40IW_HMC_PAGED_BP_SIZE; - else - alloc_len = direct_mode_sz; - - /* allocate a 4K pd page or 2M backing page */ - ret_code = i40iw_allocate_dma_mem(hw, &mem, alloc_len, - I40IW_HMC_PD_BP_BUF_ALIGNMENT); - if (ret_code) - goto exit; - dma_mem_alloc_done = true; - if (type == I40IW_SD_TYPE_PAGED) { - ret_code = i40iw_allocate_virt_mem(hw, - &sd_entry->u.pd_table.pd_entry_virt_mem, - sizeof(struct i40iw_hmc_pd_entry) * 512); - if (ret_code) - goto exit; - sd_entry->u.pd_table.pd_entry = (struct i40iw_hmc_pd_entry *) - sd_entry->u.pd_table.pd_entry_virt_mem.va; - - memcpy(&sd_entry->u.pd_table.pd_page_addr, &mem, sizeof(struct i40iw_dma_mem)); - } else { - memcpy(&sd_entry->u.bp.addr, &mem, sizeof(struct i40iw_dma_mem)); - sd_entry->u.bp.sd_pd_index = sd_index; - } - - hmc_info->sd_table.sd_entry[sd_index].entry_type = type; - - I40IW_INC_SD_REFCNT(&hmc_info->sd_table); - } - if (sd_entry->entry_type == I40IW_SD_TYPE_DIRECT) - I40IW_INC_BP_REFCNT(&sd_entry->u.bp); -exit: - if (ret_code) - if (dma_mem_alloc_done) - i40iw_free_dma_mem(hw, &mem); - - return ret_code; -} - -/** - * i40iw_add_pd_table_entry - Adds page descriptor to the specified table - * @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 - * 2. Adds pd_entry in the pd_table - * 3. Mark the entry valid in i40iw_hmc_pd_entry structure - * 4. Initializes the pd_entry's ref count to 1 - * assumptions: - * 1. The memory for pd should be pinned down, physically contiguous and - * aligned on 4K boundary and zeroed memory. - * 2. It should be 4K in size. - */ -enum i40iw_status_code i40iw_add_pd_table_entry(struct i40iw_hw *hw, - struct i40iw_hmc_info *hmc_info, - u32 pd_index, - struct i40iw_dma_mem *rsrc_pg) -{ - enum i40iw_status_code ret_code = 0; - struct i40iw_hmc_pd_table *pd_table; - struct i40iw_hmc_pd_entry *pd_entry; - struct i40iw_dma_mem mem; - struct i40iw_dma_mem *page = &mem; - u32 sd_idx, rel_pd_idx; - u64 *pd_addr; - u64 page_desc; - - if (pd_index / I40IW_HMC_PD_CNT_IN_SD >= hmc_info->sd_table.sd_cnt) - return I40IW_ERR_INVALID_PAGE_DESC_INDEX; - - sd_idx = (pd_index / I40IW_HMC_PD_CNT_IN_SD); - if (hmc_info->sd_table.sd_entry[sd_idx].entry_type != I40IW_SD_TYPE_PAGED) - return 0; - - rel_pd_idx = (pd_index % I40IW_HMC_PD_CNT_IN_SD); - 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) { - if (rsrc_pg) { - pd_entry->rsrc_pg = true; - page = rsrc_pg; - } else { - ret_code = i40iw_allocate_dma_mem(hw, page, - I40IW_HMC_PAGED_BP_SIZE, - I40IW_HMC_PD_BP_BUF_ALIGNMENT); - if (ret_code) - return ret_code; - pd_entry->rsrc_pg = false; - } - - memcpy(&pd_entry->bp.addr, page, sizeof(struct i40iw_dma_mem)); - pd_entry->bp.sd_pd_index = pd_index; - pd_entry->bp.entry_type = I40IW_SD_TYPE_PAGED; - page_desc = page->pa | 0x1; - - pd_addr = (u64 *)pd_table->pd_page_addr.va; - pd_addr += rel_pd_idx; - - memcpy(pd_addr, &page_desc, sizeof(*pd_addr)); - - pd_entry->sd_index = sd_idx; - pd_entry->valid = true; - I40IW_INC_PD_REFCNT(pd_table); - if (hmc_info->hmc_fn_id < I40IW_FIRST_VF_FPM_ID) - I40IW_INVALIDATE_PF_HMC_PD(hw, sd_idx, rel_pd_idx); - else if (hw->hmc.hmc_fn_id != hmc_info->hmc_fn_id) - I40IW_INVALIDATE_VF_HMC_PD(hw, sd_idx, rel_pd_idx, - hmc_info->hmc_fn_id); - } - I40IW_INC_BP_REFCNT(&pd_entry->bp); - - return 0; -} - -/** - * i40iw_remove_pd_bp - remove a backing page from a page descriptor - * @hw: pointer to our HW structure - * @hmc_info: pointer to the HMC configuration information structure - * @idx: the page index - * @is_pf: distinguishes a VF from a PF - * - * This function: - * 1. Marks the entry in pd table (for paged address mode) or in sd table - * (for direct address mode) invalid. - * 2. Write to register PMPDINV to invalidate the backing page in FV cache - * 3. Decrement the ref count for the pd _entry - * assumptions: - * 1. Caller can deallocate the memory used by backing storage after this - * function returns. - */ -enum i40iw_status_code i40iw_remove_pd_bp(struct i40iw_hw *hw, - struct i40iw_hmc_info *hmc_info, - u32 idx, - bool is_pf) -{ - struct i40iw_hmc_pd_entry *pd_entry; - struct i40iw_hmc_pd_table *pd_table; - struct i40iw_hmc_sd_entry *sd_entry; - u32 sd_idx, rel_pd_idx; - struct i40iw_dma_mem *mem; - u64 *pd_addr; - - sd_idx = idx / I40IW_HMC_PD_CNT_IN_SD; - rel_pd_idx = idx % I40IW_HMC_PD_CNT_IN_SD; - if (sd_idx >= hmc_info->sd_table.sd_cnt) - return I40IW_ERR_INVALID_PAGE_DESC_INDEX; - - sd_entry = &hmc_info->sd_table.sd_entry[sd_idx]; - if (sd_entry->entry_type != I40IW_SD_TYPE_PAGED) - return I40IW_ERR_INVALID_SD_TYPE; - - pd_table = &hmc_info->sd_table.sd_entry[sd_idx].u.pd_table; - pd_entry = &pd_table->pd_entry[rel_pd_idx]; - I40IW_DEC_BP_REFCNT(&pd_entry->bp); - if (pd_entry->bp.ref_cnt) - return 0; - - pd_entry->valid = false; - I40IW_DEC_PD_REFCNT(pd_table); - pd_addr = (u64 *)pd_table->pd_page_addr.va; - pd_addr += rel_pd_idx; - memset(pd_addr, 0, sizeof(u64)); - if (is_pf) - I40IW_INVALIDATE_PF_HMC_PD(hw, sd_idx, idx); - else - I40IW_INVALIDATE_VF_HMC_PD(hw, sd_idx, idx, - hmc_info->hmc_fn_id); - - if (!pd_entry->rsrc_pg) { - mem = &pd_entry->bp.addr; - if (!mem || !mem->va) - return I40IW_ERR_PARAM; - i40iw_free_dma_mem(hw, mem); - } - if (!pd_table->ref_cnt) - i40iw_free_virt_mem(hw, &pd_table->pd_entry_virt_mem); - - return 0; -} - -/** - * i40iw_prep_remove_sd_bp - Prepares to remove a backing page from a sd entry - * @hmc_info: pointer to the HMC configuration information structure - * @idx: the page index - */ -enum i40iw_status_code i40iw_prep_remove_sd_bp(struct i40iw_hmc_info *hmc_info, u32 idx) -{ - struct i40iw_hmc_sd_entry *sd_entry; - - sd_entry = &hmc_info->sd_table.sd_entry[idx]; - I40IW_DEC_BP_REFCNT(&sd_entry->u.bp); - if (sd_entry->u.bp.ref_cnt) - return I40IW_ERR_NOT_READY; - - I40IW_DEC_SD_REFCNT(&hmc_info->sd_table); - sd_entry->valid = false; - - return 0; -} - -/** - * i40iw_prep_remove_pd_page - Prepares to remove a PD page from sd entry. - * @hmc_info: pointer to the HMC configuration information structure - * @idx: segment descriptor index to find the relevant page descriptor - */ -enum i40iw_status_code i40iw_prep_remove_pd_page(struct i40iw_hmc_info *hmc_info, - u32 idx) -{ - struct i40iw_hmc_sd_entry *sd_entry; - - sd_entry = &hmc_info->sd_table.sd_entry[idx]; - - if (sd_entry->u.pd_table.ref_cnt) - return I40IW_ERR_NOT_READY; - - sd_entry->valid = false; - I40IW_DEC_SD_REFCNT(&hmc_info->sd_table); - - return 0; -} - -/** - * i40iw_pf_init_vfhmc - - * @vf_cnt_array: array of cnt values of iwarp hmc objects - * @vf_hmc_fn_id: hmc function id ofr vf driver - * @dev: pointer to i40iw_dev struct - * - * Called by pf driver to initialize hmc_info for vf driver instance. - */ -enum i40iw_status_code i40iw_pf_init_vfhmc(struct i40iw_sc_dev *dev, - u8 vf_hmc_fn_id, - u32 *vf_cnt_array) -{ - struct i40iw_hmc_info *hmc_info; - enum i40iw_status_code ret_code = 0; - u32 i; - - if ((vf_hmc_fn_id < I40IW_FIRST_VF_FPM_ID) || - (vf_hmc_fn_id >= I40IW_FIRST_VF_FPM_ID + - I40IW_MAX_PE_ENABLED_VF_COUNT)) { - i40iw_debug(dev, I40IW_DEBUG_HMC, "%s: invalid vf_hmc_fn_id 0x%x\n", - __func__, vf_hmc_fn_id); - return I40IW_ERR_INVALID_HMCFN_ID; - } - - ret_code = i40iw_sc_init_iw_hmc(dev, vf_hmc_fn_id); - if (ret_code) - return ret_code; - - hmc_info = i40iw_vf_hmcinfo_from_fpm(dev, vf_hmc_fn_id); - - for (i = I40IW_HMC_IW_QP; i < I40IW_HMC_IW_MAX; i++) - if (vf_cnt_array) - hmc_info->hmc_obj[i].cnt = - vf_cnt_array[i - I40IW_HMC_IW_QP]; - else - hmc_info->hmc_obj[i].cnt = hmc_info->hmc_obj[i].max_cnt; - - return 0; -} |