1 /******************************************************************************
3 Copyright (c) 2013-2015, Intel Corporation
6 Redistribution and use in source and binary forms, with or without
7 modification, are permitted provided that the following conditions are met:
9 1. Redistributions of source code must retain the above copyright notice,
10 this list of conditions and the following disclaimer.
12 2. Redistributions in binary form must reproduce the above copyright
13 notice, this list of conditions and the following disclaimer in the
14 documentation and/or other materials provided with the distribution.
16 3. Neither the name of the Intel Corporation nor the names of its
17 contributors may be used to endorse or promote products derived from
18 this software without specific prior written permission.
20 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
21 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
24 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 POSSIBILITY OF SUCH DAMAGE.
32 ******************************************************************************/
35 #include "i40e_osdep.h"
36 #include "i40e_register.h"
37 #include "i40e_status.h"
38 #include "i40e_alloc.h"
40 #ifndef I40E_NO_TYPE_HEADER
41 #include "i40e_type.h"
45 * i40e_add_sd_table_entry - Adds a segment descriptor to the table
46 * @hw: pointer to our hw struct
47 * @hmc_info: pointer to the HMC configuration information struct
48 * @sd_index: segment descriptor index to manipulate
49 * @type: what type of segment descriptor we're manipulating
50 * @direct_mode_sz: size to alloc in direct mode
52 enum i40e_status_code i40e_add_sd_table_entry(struct i40e_hw *hw,
53 struct i40e_hmc_info *hmc_info,
55 enum i40e_sd_entry_type type,
58 enum i40e_status_code ret_code = I40E_SUCCESS;
59 struct i40e_hmc_sd_entry *sd_entry;
60 enum i40e_memory_type mem_type;
61 bool dma_mem_alloc_done = FALSE;
62 struct i40e_dma_mem mem;
65 if (NULL == hmc_info->sd_table.sd_entry) {
66 ret_code = I40E_ERR_BAD_PTR;
67 DEBUGOUT("i40e_add_sd_table_entry: bad sd_entry\n");
71 if (sd_index >= hmc_info->sd_table.sd_cnt) {
72 ret_code = I40E_ERR_INVALID_SD_INDEX;
73 DEBUGOUT("i40e_add_sd_table_entry: bad sd_index\n");
77 sd_entry = &hmc_info->sd_table.sd_entry[sd_index];
78 if (!sd_entry->valid) {
79 if (I40E_SD_TYPE_PAGED == type) {
80 mem_type = i40e_mem_pd;
81 alloc_len = I40E_HMC_PAGED_BP_SIZE;
83 mem_type = i40e_mem_bp_jumbo;
84 alloc_len = direct_mode_sz;
87 /* allocate a 4K pd page or 2M backing page */
88 ret_code = i40e_allocate_dma_mem(hw, &mem, mem_type, alloc_len,
89 I40E_HMC_PD_BP_BUF_ALIGNMENT);
92 dma_mem_alloc_done = TRUE;
93 if (I40E_SD_TYPE_PAGED == type) {
94 ret_code = i40e_allocate_virt_mem(hw,
95 &sd_entry->u.pd_table.pd_entry_virt_mem,
96 sizeof(struct i40e_hmc_pd_entry) * 512);
99 sd_entry->u.pd_table.pd_entry =
100 (struct i40e_hmc_pd_entry *)
101 sd_entry->u.pd_table.pd_entry_virt_mem.va;
102 i40e_memcpy(&sd_entry->u.pd_table.pd_page_addr,
103 &mem, sizeof(struct i40e_dma_mem),
104 I40E_NONDMA_TO_NONDMA);
106 i40e_memcpy(&sd_entry->u.bp.addr,
107 &mem, sizeof(struct i40e_dma_mem),
108 I40E_NONDMA_TO_NONDMA);
109 sd_entry->u.bp.sd_pd_index = sd_index;
111 /* initialize the sd entry */
112 hmc_info->sd_table.sd_entry[sd_index].entry_type = type;
114 /* increment the ref count */
115 I40E_INC_SD_REFCNT(&hmc_info->sd_table);
117 /* Increment backing page reference count */
118 if (I40E_SD_TYPE_DIRECT == sd_entry->entry_type)
119 I40E_INC_BP_REFCNT(&sd_entry->u.bp);
121 if (I40E_SUCCESS != ret_code)
122 if (dma_mem_alloc_done)
123 i40e_free_dma_mem(hw, &mem);
129 * i40e_add_pd_table_entry - Adds page descriptor to the specified table
130 * @hw: pointer to our HW structure
131 * @hmc_info: pointer to the HMC configuration information structure
132 * @pd_index: which page descriptor index to manipulate
133 * @rsrc_pg: if not NULL, use preallocated page instead of allocating new one.
136 * 1. Initializes the pd entry
137 * 2. Adds pd_entry in the pd_table
138 * 3. Mark the entry valid in i40e_hmc_pd_entry structure
139 * 4. Initializes the pd_entry's ref count to 1
141 * 1. The memory for pd should be pinned down, physically contiguous and
142 * aligned on 4K boundary and zeroed memory.
143 * 2. It should be 4K in size.
145 enum i40e_status_code i40e_add_pd_table_entry(struct i40e_hw *hw,
146 struct i40e_hmc_info *hmc_info,
148 struct i40e_dma_mem *rsrc_pg)
150 enum i40e_status_code ret_code = I40E_SUCCESS;
151 struct i40e_hmc_pd_table *pd_table;
152 struct i40e_hmc_pd_entry *pd_entry;
153 struct i40e_dma_mem mem;
154 struct i40e_dma_mem *page = &mem;
155 u32 sd_idx, rel_pd_idx;
159 if (pd_index / I40E_HMC_PD_CNT_IN_SD >= hmc_info->sd_table.sd_cnt) {
160 ret_code = I40E_ERR_INVALID_PAGE_DESC_INDEX;
161 DEBUGOUT("i40e_add_pd_table_entry: bad pd_index\n");
165 /* find corresponding sd */
166 sd_idx = (pd_index / I40E_HMC_PD_CNT_IN_SD);
167 if (I40E_SD_TYPE_PAGED !=
168 hmc_info->sd_table.sd_entry[sd_idx].entry_type)
171 rel_pd_idx = (pd_index % I40E_HMC_PD_CNT_IN_SD);
172 pd_table = &hmc_info->sd_table.sd_entry[sd_idx].u.pd_table;
173 pd_entry = &pd_table->pd_entry[rel_pd_idx];
174 if (!pd_entry->valid) {
176 pd_entry->rsrc_pg = TRUE;
179 /* allocate a 4K backing page */
180 ret_code = i40e_allocate_dma_mem(hw, page, i40e_mem_bp,
181 I40E_HMC_PAGED_BP_SIZE,
182 I40E_HMC_PD_BP_BUF_ALIGNMENT);
185 pd_entry->rsrc_pg = FALSE;
188 i40e_memcpy(&pd_entry->bp.addr, page,
189 sizeof(struct i40e_dma_mem), I40E_NONDMA_TO_NONDMA);
190 pd_entry->bp.sd_pd_index = pd_index;
191 pd_entry->bp.entry_type = I40E_SD_TYPE_PAGED;
192 /* Set page address and valid bit */
193 page_desc = page->pa | 0x1;
195 pd_addr = (u64 *)pd_table->pd_page_addr.va;
196 pd_addr += rel_pd_idx;
198 /* Add the backing page physical address in the pd entry */
199 i40e_memcpy(pd_addr, &page_desc, sizeof(u64),
202 pd_entry->sd_index = sd_idx;
203 pd_entry->valid = TRUE;
204 I40E_INC_PD_REFCNT(pd_table);
206 I40E_INC_BP_REFCNT(&pd_entry->bp);
212 * i40e_remove_pd_bp - remove a backing page from a page descriptor
213 * @hw: pointer to our HW structure
214 * @hmc_info: pointer to the HMC configuration information structure
215 * @idx: the page index
216 * @is_pf: distinguishes a VF from a PF
219 * 1. Marks the entry in pd tabe (for paged address mode) or in sd table
220 * (for direct address mode) invalid.
221 * 2. Write to register PMPDINV to invalidate the backing page in FV cache
222 * 3. Decrement the ref count for the pd _entry
224 * 1. Caller can deallocate the memory used by backing storage after this
227 enum i40e_status_code i40e_remove_pd_bp(struct i40e_hw *hw,
228 struct i40e_hmc_info *hmc_info,
231 enum i40e_status_code ret_code = I40E_SUCCESS;
232 struct i40e_hmc_pd_entry *pd_entry;
233 struct i40e_hmc_pd_table *pd_table;
234 struct i40e_hmc_sd_entry *sd_entry;
235 u32 sd_idx, rel_pd_idx;
238 /* calculate index */
239 sd_idx = idx / I40E_HMC_PD_CNT_IN_SD;
240 rel_pd_idx = idx % I40E_HMC_PD_CNT_IN_SD;
241 if (sd_idx >= hmc_info->sd_table.sd_cnt) {
242 ret_code = I40E_ERR_INVALID_PAGE_DESC_INDEX;
243 DEBUGOUT("i40e_remove_pd_bp: bad idx\n");
246 sd_entry = &hmc_info->sd_table.sd_entry[sd_idx];
247 if (I40E_SD_TYPE_PAGED != sd_entry->entry_type) {
248 ret_code = I40E_ERR_INVALID_SD_TYPE;
249 DEBUGOUT("i40e_remove_pd_bp: wrong sd_entry type\n");
252 /* get the entry and decrease its ref counter */
253 pd_table = &hmc_info->sd_table.sd_entry[sd_idx].u.pd_table;
254 pd_entry = &pd_table->pd_entry[rel_pd_idx];
255 I40E_DEC_BP_REFCNT(&pd_entry->bp);
256 if (pd_entry->bp.ref_cnt)
259 /* mark the entry invalid */
260 pd_entry->valid = FALSE;
261 I40E_DEC_PD_REFCNT(pd_table);
262 pd_addr = (u64 *)pd_table->pd_page_addr.va;
263 pd_addr += rel_pd_idx;
264 i40e_memset(pd_addr, 0, sizeof(u64), I40E_DMA_MEM);
265 I40E_INVALIDATE_PF_HMC_PD(hw, sd_idx, idx);
267 /* free memory here */
268 if (!pd_entry->rsrc_pg)
269 ret_code = i40e_free_dma_mem(hw, &(pd_entry->bp.addr));
270 if (I40E_SUCCESS != ret_code)
272 if (!pd_table->ref_cnt)
273 i40e_free_virt_mem(hw, &pd_table->pd_entry_virt_mem);
279 * i40e_prep_remove_sd_bp - Prepares to remove a backing page from a sd entry
280 * @hmc_info: pointer to the HMC configuration information structure
281 * @idx: the page index
283 enum i40e_status_code i40e_prep_remove_sd_bp(struct i40e_hmc_info *hmc_info,
286 enum i40e_status_code ret_code = I40E_SUCCESS;
287 struct i40e_hmc_sd_entry *sd_entry;
289 /* get the entry and decrease its ref counter */
290 sd_entry = &hmc_info->sd_table.sd_entry[idx];
291 I40E_DEC_BP_REFCNT(&sd_entry->u.bp);
292 if (sd_entry->u.bp.ref_cnt) {
293 ret_code = I40E_ERR_NOT_READY;
296 I40E_DEC_SD_REFCNT(&hmc_info->sd_table);
298 /* mark the entry invalid */
299 sd_entry->valid = FALSE;
305 * i40e_remove_sd_bp_new - Removes a backing page from a segment descriptor
306 * @hw: pointer to our hw struct
307 * @hmc_info: pointer to the HMC configuration information structure
308 * @idx: the page index
309 * @is_pf: used to distinguish between VF and PF
311 enum i40e_status_code i40e_remove_sd_bp_new(struct i40e_hw *hw,
312 struct i40e_hmc_info *hmc_info,
315 struct i40e_hmc_sd_entry *sd_entry;
318 return I40E_NOT_SUPPORTED;
320 /* get the entry and decrease its ref counter */
321 sd_entry = &hmc_info->sd_table.sd_entry[idx];
322 I40E_CLEAR_PF_SD_ENTRY(hw, idx, I40E_SD_TYPE_DIRECT);
324 return i40e_free_dma_mem(hw, &(sd_entry->u.bp.addr));
328 * i40e_prep_remove_pd_page - Prepares to remove a PD page from sd entry.
329 * @hmc_info: pointer to the HMC configuration information structure
330 * @idx: segment descriptor index to find the relevant page descriptor
332 enum i40e_status_code i40e_prep_remove_pd_page(struct i40e_hmc_info *hmc_info,
335 enum i40e_status_code ret_code = I40E_SUCCESS;
336 struct i40e_hmc_sd_entry *sd_entry;
338 sd_entry = &hmc_info->sd_table.sd_entry[idx];
340 if (sd_entry->u.pd_table.ref_cnt) {
341 ret_code = I40E_ERR_NOT_READY;
345 /* mark the entry invalid */
346 sd_entry->valid = FALSE;
348 I40E_DEC_SD_REFCNT(&hmc_info->sd_table);
354 * i40e_remove_pd_page_new - Removes a PD page from sd entry.
355 * @hw: pointer to our hw struct
356 * @hmc_info: pointer to the HMC configuration information structure
357 * @idx: segment descriptor index to find the relevant page descriptor
358 * @is_pf: used to distinguish between VF and PF
360 enum i40e_status_code i40e_remove_pd_page_new(struct i40e_hw *hw,
361 struct i40e_hmc_info *hmc_info,
364 struct i40e_hmc_sd_entry *sd_entry;
367 return I40E_NOT_SUPPORTED;
369 sd_entry = &hmc_info->sd_table.sd_entry[idx];
370 I40E_CLEAR_PF_SD_ENTRY(hw, idx, I40E_SD_TYPE_PAGED);
372 return i40e_free_dma_mem(hw, &(sd_entry->u.pd_table.pd_page_addr));