--- /dev/null
+// SPDX-License-Identifier: GPL-2.0 or Linux-OpenIB
+/* Copyright (c) 2015 - 2021 Intel Corporation */
+#include "osdep.h"
+#include "status.h"
+#include "hmc.h"
+#include "defs.h"
+#include "type.h"
+#include "protos.h"
+
+/**
+ * irdma_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 irdma_hmc_rsrc_type.
+ */
+
+static void irdma_find_sd_index_limit(struct irdma_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 / IRDMA_HMC_DIRECT_BP_SIZE);
+ *sd_limit = (u32)((fpm_limit - 1) / IRDMA_HMC_DIRECT_BP_SIZE);
+ *sd_limit += 1;
+}
+
+/**
+ * irdma_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 irdma_hmc_rsrc_type.
+ */
+
+static void irdma_find_pd_index_limit(struct irdma_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 / IRDMA_HMC_PAGED_BP_SIZE);
+ *pd_limit = (u32)((fpm_limit - 1) / IRDMA_HMC_PAGED_BP_SIZE);
+ *pd_limit += 1;
+}
+
+/**
+ * irdma_set_sd_entry - setup entry for sd programming
+ * @pa: physical addr
+ * @idx: sd index
+ * @type: paged or direct sd
+ * @entry: sd entry ptr
+ */
+static void irdma_set_sd_entry(u64 pa, u32 idx, enum irdma_sd_entry_type type,
+ struct irdma_update_sd_entry *entry)
+{
+ entry->data = pa |
+ FIELD_PREP(IRDMA_PFHMC_SDDATALOW_PMSDBPCOUNT, IRDMA_HMC_MAX_BP_COUNT) |
+ FIELD_PREP(IRDMA_PFHMC_SDDATALOW_PMSDTYPE,
+ type == IRDMA_SD_TYPE_PAGED ? 0 : 1) |
+ FIELD_PREP(IRDMA_PFHMC_SDDATALOW_PMSDVALID, 1);
+
+ entry->cmd = idx | FIELD_PREP(IRDMA_PFHMC_SDCMD_PMSDWR, 1) | BIT(15);
+}
+
+/**
+ * irdma_clr_sd_entry - setup entry for sd clear
+ * @idx: sd index
+ * @type: paged or direct sd
+ * @entry: sd entry ptr
+ */
+static void irdma_clr_sd_entry(u32 idx, enum irdma_sd_entry_type type,
+ struct irdma_update_sd_entry *entry)
+{
+ entry->data = FIELD_PREP(IRDMA_PFHMC_SDDATALOW_PMSDBPCOUNT, IRDMA_HMC_MAX_BP_COUNT) |
+ FIELD_PREP(IRDMA_PFHMC_SDDATALOW_PMSDTYPE,
+ type == IRDMA_SD_TYPE_PAGED ? 0 : 1);
+
+ entry->cmd = idx | FIELD_PREP(IRDMA_PFHMC_SDCMD_PMSDWR, 1) | BIT(15);
+}
+
+/**
+ * irdma_invalidate_pf_hmc_pd - Invalidates the pd cache in the hardware for PF
+ * @dev: pointer to our device struct
+ * @sd_idx: segment descriptor index
+ * @pd_idx: page descriptor index
+ */
+static inline void irdma_invalidate_pf_hmc_pd(struct irdma_sc_dev *dev, u32 sd_idx,
+ u32 pd_idx)
+{
+ u32 val = FIELD_PREP(IRDMA_PFHMC_PDINV_PMSDIDX, sd_idx) |
+ FIELD_PREP(IRDMA_PFHMC_PDINV_PMSDPARTSEL, 1) |
+ FIELD_PREP(IRDMA_PFHMC_PDINV_PMPDIDX, pd_idx);
+
+ writel(val, dev->hw_regs[IRDMA_PFHMC_PDINV]);
+}
+
+/**
+ * irdma_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 irdma_status_code irdma_hmc_sd_one(struct irdma_sc_dev *dev, u8 hmc_fn_id,
+ u64 pa, u32 sd_idx,
+ enum irdma_sd_entry_type type,
+ bool setsd)
+{
+ struct irdma_update_sds_info sdinfo;
+
+ sdinfo.cnt = 1;
+ sdinfo.hmc_fn_id = hmc_fn_id;
+ if (setsd)
+ irdma_set_sd_entry(pa, sd_idx, type, sdinfo.entry);
+ else
+ irdma_clr_sd_entry(sd_idx, type, sdinfo.entry);
+ return dev->cqp->process_cqp_sds(dev, &sdinfo);
+}
+
+/**
+ * irdma_hmc_sd_grp - setup group of 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 irdma_status_code irdma_hmc_sd_grp(struct irdma_sc_dev *dev,
+ struct irdma_hmc_info *hmc_info,
+ u32 sd_index, u32 sd_cnt,
+ bool setsd)
+{
+ struct irdma_hmc_sd_entry *sd_entry;
+ struct irdma_update_sds_info sdinfo = {};
+ u64 pa;
+ u32 i;
+ enum irdma_status_code ret_code = 0;
+
+ 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 == IRDMA_SD_TYPE_PAGED) ?
+ sd_entry->u.pd_table.pd_page_addr.pa :
+ sd_entry->u.bp.addr.pa;
+ irdma_set_sd_entry(pa, i, sd_entry->entry_type,
+ &sdinfo.entry[sdinfo.cnt]);
+ } else {
+ irdma_clr_sd_entry(i, sd_entry->entry_type,
+ &sdinfo.entry[sdinfo.cnt]);
+ }
+ sdinfo.cnt++;
+ if (sdinfo.cnt == IRDMA_MAX_SD_ENTRIES) {
+ ret_code = dev->cqp->process_cqp_sds(dev, &sdinfo);
+ if (ret_code) {
+ ibdev_dbg(to_ibdev(dev),
+ "HMC: 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;
+}
+
+/**
+ * irdma_hmc_finish_add_sd_reg - program sd entries for objects
+ * @dev: pointer to the device structure
+ * @info: create obj info
+ */
+static enum irdma_status_code
+irdma_hmc_finish_add_sd_reg(struct irdma_sc_dev *dev,
+ struct irdma_hmc_create_obj_info *info)
+{
+ if (info->start_idx >= info->hmc_info->hmc_obj[info->rsrc_type].cnt)
+ return IRDMA_ERR_INVALID_HMC_OBJ_INDEX;
+
+ if ((info->start_idx + info->count) >
+ info->hmc_info->hmc_obj[info->rsrc_type].cnt)
+ return IRDMA_ERR_INVALID_HMC_OBJ_COUNT;
+
+ if (!info->add_sd_cnt)
+ return 0;
+ return irdma_hmc_sd_grp(dev, info->hmc_info,
+ info->hmc_info->sd_indexes[0], info->add_sd_cnt,
+ true);
+}
+
+/**
+ * irdma_sc_create_hmc_obj - allocate backing store for hmc objects
+ * @dev: pointer to the device structure
+ * @info: pointer to irdma_hmc_create_obj_info struct
+ *
+ * This will allocate memory for PDs and backing pages and populate
+ * the sd and pd entries.
+ */
+enum irdma_status_code
+irdma_sc_create_hmc_obj(struct irdma_sc_dev *dev,
+ struct irdma_hmc_create_obj_info *info)
+{
+ struct irdma_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 irdma_status_code ret_code = 0;
+
+ if (info->start_idx >= info->hmc_info->hmc_obj[info->rsrc_type].cnt)
+ return IRDMA_ERR_INVALID_HMC_OBJ_INDEX;
+
+ if ((info->start_idx + info->count) >
+ info->hmc_info->hmc_obj[info->rsrc_type].cnt) {
+ ibdev_dbg(to_ibdev(dev),
+ "HMC: error type %u, start = %u, req cnt %u, cnt = %u\n",
+ info->rsrc_type, info->start_idx, info->count,
+ info->hmc_info->hmc_obj[info->rsrc_type].cnt);
+ return IRDMA_ERR_INVALID_HMC_OBJ_COUNT;
+ }
+
+ irdma_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 IRDMA_ERR_INVALID_SD_INDEX;
+ }
+
+ irdma_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 = irdma_add_sd_table_entry(dev->hw, info->hmc_info, j,
+ info->entry_type,
+ IRDMA_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 == IRDMA_SD_TYPE_PAGED &&
+ (dev->hmc_info == info->hmc_info &&
+ info->rsrc_type != IRDMA_HMC_IW_PBLE)) {
+ pd_idx1 = max(pd_idx, (j * IRDMA_HMC_MAX_BP_COUNT));
+ pd_lmt1 = min(pd_lmt, (j + 1) * IRDMA_HMC_MAX_BP_COUNT);
+ for (i = pd_idx1; i < pd_lmt1; i++) {
+ /* update the pd table entry */
+ ret_code = irdma_add_pd_table_entry(dev,
+ info->hmc_info,
+ i, NULL);
+ if (ret_code) {
+ pd_error = true;
+ break;
+ }
+ }
+ if (pd_error) {
+ while (i && (i > pd_idx1)) {
+ irdma_remove_pd_bp(dev, info->hmc_info,
+ i - 1);
+ 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 irdma_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 IRDMA_SD_TYPE_PAGED:
+ pd_idx1 = max(pd_idx, (j - 1) * IRDMA_HMC_MAX_BP_COUNT);
+ pd_lmt1 = min(pd_lmt, (j * IRDMA_HMC_MAX_BP_COUNT));
+ for (i = pd_idx1; i < pd_lmt1; i++)
+ irdma_prep_remove_pd_page(info->hmc_info, i);
+ break;
+ case IRDMA_SD_TYPE_DIRECT:
+ irdma_prep_remove_pd_page(info->hmc_info, (j - 1));
+ break;
+ default:
+ ret_code = IRDMA_ERR_INVALID_SD_TYPE;
+ break;
+ }
+ j--;
+ }
+
+ return ret_code;
+}
+
+/**
+ * irdma_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 irdma_status_code
+irdma_finish_del_sd_reg(struct irdma_sc_dev *dev,
+ struct irdma_hmc_del_obj_info *info, bool reset)
+{
+ struct irdma_hmc_sd_entry *sd_entry;
+ enum irdma_status_code ret_code = 0;
+ u32 i, sd_idx;
+ struct irdma_dma_mem *mem;
+
+ if (!reset)
+ ret_code = irdma_hmc_sd_grp(dev, info->hmc_info,
+ info->hmc_info->sd_indexes[0],
+ info->del_sd_cnt, false);
+
+ if (ret_code)
+ ibdev_dbg(to_ibdev(dev), "HMC: error cqp sd sd_grp\n");
+ 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];
+ mem = (sd_entry->entry_type == IRDMA_SD_TYPE_PAGED) ?
+ &sd_entry->u.pd_table.pd_page_addr :
+ &sd_entry->u.bp.addr;
+
+ if (!mem || !mem->va) {
+ ibdev_dbg(to_ibdev(dev), "HMC: error cqp sd mem\n");
+ } else {
+ dma_free_coherent(dev->hw->device, mem->size, mem->va,
+ mem->pa);
+ mem->va = NULL;
+ }
+ }
+
+ return ret_code;
+}
+
+/**
+ * irdma_sc_del_hmc_obj - remove pe hmc objects
+ * @dev: pointer to the device structure
+ * @info: pointer to irdma_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 irdma_status_code irdma_sc_del_hmc_obj(struct irdma_sc_dev *dev,
+ struct irdma_hmc_del_obj_info *info,
+ bool reset)
+{
+ struct irdma_hmc_pd_table *pd_table;
+ u32 sd_idx, sd_lmt;
+ u32 pd_idx, pd_lmt, rel_pd_idx;
+ u32 i, j;
+ enum irdma_status_code ret_code = 0;
+
+ if (info->start_idx >= info->hmc_info->hmc_obj[info->rsrc_type].cnt) {
+ ibdev_dbg(to_ibdev(dev),
+ "HMC: error start_idx[%04d] >= [type %04d].cnt[%04d]\n",
+ info->start_idx, info->rsrc_type,
+ info->hmc_info->hmc_obj[info->rsrc_type].cnt);
+ return IRDMA_ERR_INVALID_HMC_OBJ_INDEX;
+ }
+
+ if ((info->start_idx + info->count) >
+ info->hmc_info->hmc_obj[info->rsrc_type].cnt) {
+ ibdev_dbg(to_ibdev(dev),
+ "HMC: error start_idx[%04d] + count %04d >= [type %04d].cnt[%04d]\n",
+ info->start_idx, info->count, info->rsrc_type,
+ info->hmc_info->hmc_obj[info->rsrc_type].cnt);
+ return IRDMA_ERR_INVALID_HMC_OBJ_COUNT;
+ }
+
+ irdma_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 / IRDMA_HMC_PD_CNT_IN_SD;
+
+ if (!info->hmc_info->sd_table.sd_entry[sd_idx].valid)
+ continue;
+
+ if (info->hmc_info->sd_table.sd_entry[sd_idx].entry_type !=
+ IRDMA_SD_TYPE_PAGED)
+ continue;
+
+ rel_pd_idx = j % IRDMA_HMC_PD_CNT_IN_SD;
+ pd_table = &info->hmc_info->sd_table.sd_entry[sd_idx].u.pd_table;
+ if (pd_table->pd_entry &&
+ pd_table->pd_entry[rel_pd_idx].valid) {
+ ret_code = irdma_remove_pd_bp(dev, info->hmc_info, j);
+ if (ret_code) {
+ ibdev_dbg(to_ibdev(dev),
+ "HMC: remove_pd_bp error\n");
+ return ret_code;
+ }
+ }
+ }
+
+ irdma_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) {
+ ibdev_dbg(to_ibdev(dev), "HMC: invalid sd_idx\n");
+ return IRDMA_ERR_INVALID_SD_INDEX;
+ }
+
+ for (i = sd_idx; i < sd_lmt; i++) {
+ pd_table = &info->hmc_info->sd_table.sd_entry[i].u.pd_table;
+ if (!info->hmc_info->sd_table.sd_entry[i].valid)
+ continue;
+ switch (info->hmc_info->sd_table.sd_entry[i].entry_type) {
+ case IRDMA_SD_TYPE_DIRECT:
+ ret_code = irdma_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 IRDMA_SD_TYPE_PAGED:
+ ret_code = irdma_prep_remove_pd_page(info->hmc_info, i);
+ if (ret_code)
+ break;
+ if (dev->hmc_info != info->hmc_info &&
+ info->rsrc_type == IRDMA_HMC_IW_PBLE &&
+ pd_table->pd_entry) {
+ kfree(pd_table->pd_entry_virt_mem.va);
+ pd_table->pd_entry = NULL;
+ }
+ info->hmc_info->sd_indexes[info->del_sd_cnt] = (u16)i;
+ info->del_sd_cnt++;
+ break;
+ default:
+ break;
+ }
+ }
+ return irdma_finish_del_sd_reg(dev, info, reset);
+}
+
+/**
+ * irdma_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 irdma_status_code irdma_add_sd_table_entry(struct irdma_hw *hw,
+ struct irdma_hmc_info *hmc_info,
+ u32 sd_index,
+ enum irdma_sd_entry_type type,
+ u64 direct_mode_sz)
+{
+ struct irdma_hmc_sd_entry *sd_entry;
+ struct irdma_dma_mem dma_mem;
+ u64 alloc_len;
+
+ sd_entry = &hmc_info->sd_table.sd_entry[sd_index];
+ if (!sd_entry->valid) {
+ if (type == IRDMA_SD_TYPE_PAGED)
+ alloc_len = IRDMA_HMC_PAGED_BP_SIZE;
+ else
+ alloc_len = direct_mode_sz;
+
+ /* allocate a 4K pd page or 2M backing page */
+ dma_mem.size = ALIGN(alloc_len, IRDMA_HMC_PD_BP_BUF_ALIGNMENT);
+ dma_mem.va = dma_alloc_coherent(hw->device, dma_mem.size,
+ &dma_mem.pa, GFP_KERNEL);
+ if (!dma_mem.va)
+ return IRDMA_ERR_NO_MEMORY;
+ if (type == IRDMA_SD_TYPE_PAGED) {
+ struct irdma_virt_mem *vmem =
+ &sd_entry->u.pd_table.pd_entry_virt_mem;
+
+ vmem->size = sizeof(struct irdma_hmc_pd_entry) * 512;
+ vmem->va = kzalloc(vmem->size, GFP_KERNEL);
+ if (!vmem->va) {
+ dma_free_coherent(hw->device, dma_mem.size,
+ dma_mem.va, dma_mem.pa);
+ dma_mem.va = NULL;
+ return IRDMA_ERR_NO_MEMORY;
+ }
+ sd_entry->u.pd_table.pd_entry = vmem->va;
+
+ memcpy(&sd_entry->u.pd_table.pd_page_addr, &dma_mem,
+ sizeof(sd_entry->u.pd_table.pd_page_addr));
+ } else {
+ memcpy(&sd_entry->u.bp.addr, &dma_mem,
+ sizeof(sd_entry->u.bp.addr));
+
+ sd_entry->u.bp.sd_pd_index = sd_index;
+ }
+
+ hmc_info->sd_table.sd_entry[sd_index].entry_type = type;
+ hmc_info->sd_table.use_cnt++;
+ }
+ if (sd_entry->entry_type == IRDMA_SD_TYPE_DIRECT)
+ sd_entry->u.bp.use_cnt++;
+
+ return 0;
+}
+
+/**
+ * irdma_add_pd_table_entry - Adds page descriptor to the specified table
+ * @dev: pointer to our device 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 irdma_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 irdma_status_code irdma_add_pd_table_entry(struct irdma_sc_dev *dev,
+ struct irdma_hmc_info *hmc_info,
+ u32 pd_index,
+ struct irdma_dma_mem *rsrc_pg)
+{
+ struct irdma_hmc_pd_table *pd_table;
+ struct irdma_hmc_pd_entry *pd_entry;
+ struct irdma_dma_mem mem;
+ struct irdma_dma_mem *page = &mem;
+ u32 sd_idx, rel_pd_idx;
+ u64 *pd_addr;
+ u64 page_desc;
+
+ if (pd_index / IRDMA_HMC_PD_CNT_IN_SD >= hmc_info->sd_table.sd_cnt)
+ return IRDMA_ERR_INVALID_PAGE_DESC_INDEX;
+
+ sd_idx = (pd_index / IRDMA_HMC_PD_CNT_IN_SD);
+ if (hmc_info->sd_table.sd_entry[sd_idx].entry_type !=
+ IRDMA_SD_TYPE_PAGED)
+ return 0;
+
+ rel_pd_idx = (pd_index % IRDMA_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 {
+ page->size = ALIGN(IRDMA_HMC_PAGED_BP_SIZE,
+ IRDMA_HMC_PD_BP_BUF_ALIGNMENT);
+ page->va = dma_alloc_coherent(dev->hw->device,
+ page->size, &page->pa,
+ GFP_KERNEL);
+ if (!page->va)
+ return IRDMA_ERR_NO_MEMORY;
+
+ pd_entry->rsrc_pg = false;
+ }
+
+ memcpy(&pd_entry->bp.addr, page, sizeof(pd_entry->bp.addr));
+ pd_entry->bp.sd_pd_index = pd_index;
+ pd_entry->bp.entry_type = IRDMA_SD_TYPE_PAGED;
+ page_desc = page->pa | 0x1;
+ pd_addr = 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;
+ pd_table->use_cnt++;
+ irdma_invalidate_pf_hmc_pd(dev, sd_idx, rel_pd_idx);
+ }
+ pd_entry->bp.use_cnt++;
+
+ return 0;
+}
+
+/**
+ * irdma_remove_pd_bp - remove a backing page from a page descriptor
+ * @dev: pointer to our HW structure
+ * @hmc_info: pointer to the HMC configuration information structure
+ * @idx: the page index
+ *
+ * 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 irdma_status_code irdma_remove_pd_bp(struct irdma_sc_dev *dev,
+ struct irdma_hmc_info *hmc_info,
+ u32 idx)
+{
+ struct irdma_hmc_pd_entry *pd_entry;
+ struct irdma_hmc_pd_table *pd_table;
+ struct irdma_hmc_sd_entry *sd_entry;
+ u32 sd_idx, rel_pd_idx;
+ struct irdma_dma_mem *mem;
+ u64 *pd_addr;
+
+ sd_idx = idx / IRDMA_HMC_PD_CNT_IN_SD;
+ rel_pd_idx = idx % IRDMA_HMC_PD_CNT_IN_SD;
+ if (sd_idx >= hmc_info->sd_table.sd_cnt)
+ return IRDMA_ERR_INVALID_PAGE_DESC_INDEX;
+
+ sd_entry = &hmc_info->sd_table.sd_entry[sd_idx];
+ if (sd_entry->entry_type != IRDMA_SD_TYPE_PAGED)
+ return IRDMA_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];
+ if (--pd_entry->bp.use_cnt)
+ return 0;
+
+ pd_entry->valid = false;
+ pd_table->use_cnt--;
+ pd_addr = pd_table->pd_page_addr.va;
+ pd_addr += rel_pd_idx;
+ memset(pd_addr, 0, sizeof(u64));
+ irdma_invalidate_pf_hmc_pd(dev, sd_idx, idx);
+
+ if (!pd_entry->rsrc_pg) {
+ mem = &pd_entry->bp.addr;
+ if (!mem || !mem->va)
+ return IRDMA_ERR_PARAM;
+
+ dma_free_coherent(dev->hw->device, mem->size, mem->va,
+ mem->pa);
+ mem->va = NULL;
+ }
+ if (!pd_table->use_cnt)
+ kfree(pd_table->pd_entry_virt_mem.va);
+
+ return 0;
+}
+
+/**
+ * irdma_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 irdma_status_code irdma_prep_remove_sd_bp(struct irdma_hmc_info *hmc_info,
+ u32 idx)
+{
+ struct irdma_hmc_sd_entry *sd_entry;
+
+ sd_entry = &hmc_info->sd_table.sd_entry[idx];
+ if (--sd_entry->u.bp.use_cnt)
+ return IRDMA_ERR_NOT_READY;
+
+ hmc_info->sd_table.use_cnt--;
+ sd_entry->valid = false;
+
+ return 0;
+}
+
+/**
+ * irdma_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 irdma_status_code
+irdma_prep_remove_pd_page(struct irdma_hmc_info *hmc_info, u32 idx)
+{
+ struct irdma_hmc_sd_entry *sd_entry;
+
+ sd_entry = &hmc_info->sd_table.sd_entry[idx];
+
+ if (sd_entry->u.pd_table.use_cnt)
+ return IRDMA_ERR_NOT_READY;
+
+ sd_entry->valid = false;
+ hmc_info->sd_table.use_cnt--;
+
+ return 0;
+}
--- /dev/null
+/* SPDX-License-Identifier: GPL-2.0 or Linux-OpenIB */
+/* Copyright (c) 2015 - 2020 Intel Corporation */
+#ifndef IRDMA_HMC_H
+#define IRDMA_HMC_H
+
+#include "defs.h"
+
+#define IRDMA_HMC_MAX_BP_COUNT 512
+#define IRDMA_MAX_SD_ENTRIES 11
+#define IRDMA_HW_DBG_HMC_INVALID_BP_MARK 0xca
+#define IRDMA_HMC_INFO_SIGNATURE 0x484d5347
+#define IRDMA_HMC_PD_CNT_IN_SD 512
+#define IRDMA_HMC_DIRECT_BP_SIZE 0x200000
+#define IRDMA_HMC_MAX_SD_COUNT 8192
+#define IRDMA_HMC_PAGED_BP_SIZE 4096
+#define IRDMA_HMC_PD_BP_BUF_ALIGNMENT 4096
+#define IRDMA_FIRST_VF_FPM_ID 8
+#define FPM_MULTIPLIER 1024
+
+enum irdma_hmc_rsrc_type {
+ IRDMA_HMC_IW_QP = 0,
+ IRDMA_HMC_IW_CQ = 1,
+ IRDMA_HMC_IW_RESERVED = 2,
+ IRDMA_HMC_IW_HTE = 3,
+ IRDMA_HMC_IW_ARP = 4,
+ IRDMA_HMC_IW_APBVT_ENTRY = 5,
+ IRDMA_HMC_IW_MR = 6,
+ IRDMA_HMC_IW_XF = 7,
+ IRDMA_HMC_IW_XFFL = 8,
+ IRDMA_HMC_IW_Q1 = 9,
+ IRDMA_HMC_IW_Q1FL = 10,
+ IRDMA_HMC_IW_TIMER = 11,
+ IRDMA_HMC_IW_FSIMC = 12,
+ IRDMA_HMC_IW_FSIAV = 13,
+ IRDMA_HMC_IW_PBLE = 14,
+ IRDMA_HMC_IW_RRF = 15,
+ IRDMA_HMC_IW_RRFFL = 16,
+ IRDMA_HMC_IW_HDR = 17,
+ IRDMA_HMC_IW_MD = 18,
+ IRDMA_HMC_IW_OOISC = 19,
+ IRDMA_HMC_IW_OOISCFFL = 20,
+ IRDMA_HMC_IW_MAX, /* Must be last entry */
+};
+
+enum irdma_sd_entry_type {
+ IRDMA_SD_TYPE_INVALID = 0,
+ IRDMA_SD_TYPE_PAGED = 1,
+ IRDMA_SD_TYPE_DIRECT = 2,
+};
+
+struct irdma_hmc_obj_info {
+ u64 base;
+ u32 max_cnt;
+ u32 cnt;
+ u64 size;
+};
+
+struct irdma_hmc_bp {
+ enum irdma_sd_entry_type entry_type;
+ struct irdma_dma_mem addr;
+ u32 sd_pd_index;
+ u32 use_cnt;
+};
+
+struct irdma_hmc_pd_entry {
+ struct irdma_hmc_bp bp;
+ u32 sd_index;
+ bool rsrc_pg:1;
+ bool valid:1;
+};
+
+struct irdma_hmc_pd_table {
+ struct irdma_dma_mem pd_page_addr;
+ struct irdma_hmc_pd_entry *pd_entry;
+ struct irdma_virt_mem pd_entry_virt_mem;
+ u32 use_cnt;
+ u32 sd_index;
+};
+
+struct irdma_hmc_sd_entry {
+ enum irdma_sd_entry_type entry_type;
+ bool valid;
+ union {
+ struct irdma_hmc_pd_table pd_table;
+ struct irdma_hmc_bp bp;
+ } u;
+};
+
+struct irdma_hmc_sd_table {
+ struct irdma_virt_mem addr;
+ u32 sd_cnt;
+ u32 use_cnt;
+ struct irdma_hmc_sd_entry *sd_entry;
+};
+
+struct irdma_hmc_info {
+ u32 signature;
+ u8 hmc_fn_id;
+ u16 first_sd_index;
+ struct irdma_hmc_obj_info *hmc_obj;
+ struct irdma_virt_mem hmc_obj_virt_mem;
+ struct irdma_hmc_sd_table sd_table;
+ u16 sd_indexes[IRDMA_HMC_MAX_SD_COUNT];
+};
+
+struct irdma_update_sd_entry {
+ u64 cmd;
+ u64 data;
+};
+
+struct irdma_update_sds_info {
+ u32 cnt;
+ u8 hmc_fn_id;
+ struct irdma_update_sd_entry entry[IRDMA_MAX_SD_ENTRIES];
+};
+
+struct irdma_ccq_cqe_info;
+struct irdma_hmc_fcn_info {
+ u32 vf_id;
+ u8 free_fcn;
+};
+
+struct irdma_hmc_create_obj_info {
+ struct irdma_hmc_info *hmc_info;
+ struct irdma_virt_mem add_sd_virt_mem;
+ u32 rsrc_type;
+ u32 start_idx;
+ u32 count;
+ u32 add_sd_cnt;
+ enum irdma_sd_entry_type entry_type;
+ bool privileged;
+};
+
+struct irdma_hmc_del_obj_info {
+ struct irdma_hmc_info *hmc_info;
+ struct irdma_virt_mem del_sd_virt_mem;
+ u32 rsrc_type;
+ u32 start_idx;
+ u32 count;
+ u32 del_sd_cnt;
+ bool privileged;
+};
+
+enum irdma_status_code irdma_copy_dma_mem(struct irdma_hw *hw, void *dest_buf,
+ struct irdma_dma_mem *src_mem,
+ u64 src_offset, u64 size);
+enum irdma_status_code
+irdma_sc_create_hmc_obj(struct irdma_sc_dev *dev,
+ struct irdma_hmc_create_obj_info *info);
+enum irdma_status_code irdma_sc_del_hmc_obj(struct irdma_sc_dev *dev,
+ struct irdma_hmc_del_obj_info *info,
+ bool reset);
+enum irdma_status_code irdma_hmc_sd_one(struct irdma_sc_dev *dev, u8 hmc_fn_id,
+ u64 pa, u32 sd_idx,
+ enum irdma_sd_entry_type type,
+ bool setsd);
+enum irdma_status_code
+irdma_update_sds_noccq(struct irdma_sc_dev *dev,
+ struct irdma_update_sds_info *info);
+struct irdma_vfdev *irdma_vfdev_from_fpm(struct irdma_sc_dev *dev,
+ u8 hmc_fn_id);
+struct irdma_hmc_info *irdma_vf_hmcinfo_from_fpm(struct irdma_sc_dev *dev,
+ u8 hmc_fn_id);
+enum irdma_status_code irdma_add_sd_table_entry(struct irdma_hw *hw,
+ struct irdma_hmc_info *hmc_info,
+ u32 sd_index,
+ enum irdma_sd_entry_type type,
+ u64 direct_mode_sz);
+enum irdma_status_code irdma_add_pd_table_entry(struct irdma_sc_dev *dev,
+ struct irdma_hmc_info *hmc_info,
+ u32 pd_index,
+ struct irdma_dma_mem *rsrc_pg);
+enum irdma_status_code irdma_remove_pd_bp(struct irdma_sc_dev *dev,
+ struct irdma_hmc_info *hmc_info,
+ u32 idx);
+enum irdma_status_code irdma_prep_remove_sd_bp(struct irdma_hmc_info *hmc_info,
+ u32 idx);
+enum irdma_status_code
+irdma_prep_remove_pd_page(struct irdma_hmc_info *hmc_info, u32 idx);
+#endif /* IRDMA_HMC_H */
projects / platform / kernel / linux-rpi.git / commitdiff