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1// SPDX-License-Identifier: GPL-2.0
2/* Copyright(c) 2013 - 2018 Intel Corporation. */
3
4#include "i40e_alloc.h"
5#include "i40e_debug.h"
6#include "i40e_hmc.h"
7#include "i40e_type.h"
8
9/**
10 * i40e_add_sd_table_entry - Adds a segment descriptor to the table
11 * @hw: pointer to our hw struct
12 * @hmc_info: pointer to the HMC configuration information struct
13 * @sd_index: segment descriptor index to manipulate
14 * @type: what type of segment descriptor we're manipulating
15 * @direct_mode_sz: size to alloc in direct mode
16 **/
17int i40e_add_sd_table_entry(struct i40e_hw *hw,
18 struct i40e_hmc_info *hmc_info,
19 u32 sd_index,
20 enum i40e_sd_entry_type type,
21 u64 direct_mode_sz)
22{
23 struct i40e_hmc_sd_entry *sd_entry;
24 bool dma_mem_alloc_done = false;
25 struct i40e_dma_mem mem;
26 int ret_code = 0;
27 u64 alloc_len;
28
29 if (NULL == hmc_info->sd_table.sd_entry) {
30 ret_code = -EINVAL;
31 hw_dbg(hw, "i40e_add_sd_table_entry: bad sd_entry\n");
32 goto exit;
33 }
34
35 if (sd_index >= hmc_info->sd_table.sd_cnt) {
36 ret_code = -EINVAL;
37 hw_dbg(hw, "i40e_add_sd_table_entry: bad sd_index\n");
38 goto exit;
39 }
40
41 sd_entry = &hmc_info->sd_table.sd_entry[sd_index];
42 if (!sd_entry->valid) {
43 if (type == I40E_SD_TYPE_PAGED)
44 alloc_len = I40E_HMC_PAGED_BP_SIZE;
45 else
46 alloc_len = direct_mode_sz;
47
48 /* allocate a 4K pd page or 2M backing page */
49 ret_code = i40e_allocate_dma_mem(hw, &mem, alloc_len,
50 I40E_HMC_PD_BP_BUF_ALIGNMENT);
51 if (ret_code)
52 goto exit;
53 dma_mem_alloc_done = true;
54 if (I40E_SD_TYPE_PAGED == type) {
55 ret_code = i40e_allocate_virt_mem(hw,
56 &sd_entry->u.pd_table.pd_entry_virt_mem,
57 sizeof(struct i40e_hmc_pd_entry) * 512);
58 if (ret_code)
59 goto exit;
60 sd_entry->u.pd_table.pd_entry =
61 (struct i40e_hmc_pd_entry *)
62 sd_entry->u.pd_table.pd_entry_virt_mem.va;
63 sd_entry->u.pd_table.pd_page_addr = mem;
64 } else {
65 sd_entry->u.bp.addr = mem;
66 sd_entry->u.bp.sd_pd_index = sd_index;
67 }
68 /* initialize the sd entry */
69 hmc_info->sd_table.sd_entry[sd_index].entry_type = type;
70
71 /* increment the ref count */
72 I40E_INC_SD_REFCNT(&hmc_info->sd_table);
73 }
74 /* Increment backing page reference count */
75 if (I40E_SD_TYPE_DIRECT == sd_entry->entry_type)
76 I40E_INC_BP_REFCNT(&sd_entry->u.bp);
77exit:
78 if (ret_code)
79 if (dma_mem_alloc_done)
80 i40e_free_dma_mem(hw, &mem);
81
82 return ret_code;
83}
84
85/**
86 * i40e_add_pd_table_entry - Adds page descriptor to the specified table
87 * @hw: pointer to our HW structure
88 * @hmc_info: pointer to the HMC configuration information structure
89 * @pd_index: which page descriptor index to manipulate
90 * @rsrc_pg: if not NULL, use preallocated page instead of allocating new one.
91 *
92 * This function:
93 * 1. Initializes the pd entry
94 * 2. Adds pd_entry in the pd_table
95 * 3. Mark the entry valid in i40e_hmc_pd_entry structure
96 * 4. Initializes the pd_entry's ref count to 1
97 * assumptions:
98 * 1. The memory for pd should be pinned down, physically contiguous and
99 * aligned on 4K boundary and zeroed memory.
100 * 2. It should be 4K in size.
101 **/
102int i40e_add_pd_table_entry(struct i40e_hw *hw,
103 struct i40e_hmc_info *hmc_info,
104 u32 pd_index,
105 struct i40e_dma_mem *rsrc_pg)
106{
107 struct i40e_hmc_pd_table *pd_table;
108 struct i40e_hmc_pd_entry *pd_entry;
109 struct i40e_dma_mem mem;
110 struct i40e_dma_mem *page = &mem;
111 u32 sd_idx, rel_pd_idx;
112 int ret_code = 0;
113 u64 page_desc;
114 u64 *pd_addr;
115
116 if (pd_index / I40E_HMC_PD_CNT_IN_SD >= hmc_info->sd_table.sd_cnt) {
117 ret_code = -EINVAL;
118 hw_dbg(hw, "i40e_add_pd_table_entry: bad pd_index\n");
119 goto exit;
120 }
121
122 /* find corresponding sd */
123 sd_idx = (pd_index / I40E_HMC_PD_CNT_IN_SD);
124 if (I40E_SD_TYPE_PAGED !=
125 hmc_info->sd_table.sd_entry[sd_idx].entry_type)
126 goto exit;
127
128 rel_pd_idx = (pd_index % I40E_HMC_PD_CNT_IN_SD);
129 pd_table = &hmc_info->sd_table.sd_entry[sd_idx].u.pd_table;
130 pd_entry = &pd_table->pd_entry[rel_pd_idx];
131 if (!pd_entry->valid) {
132 if (rsrc_pg) {
133 pd_entry->rsrc_pg = true;
134 page = rsrc_pg;
135 } else {
136 /* allocate a 4K backing page */
137 ret_code = i40e_allocate_dma_mem(hw, page,
138 I40E_HMC_PAGED_BP_SIZE,
139 I40E_HMC_PD_BP_BUF_ALIGNMENT);
140 if (ret_code)
141 goto exit;
142 pd_entry->rsrc_pg = false;
143 }
144
145 pd_entry->bp.addr = *page;
146 pd_entry->bp.sd_pd_index = pd_index;
147 pd_entry->bp.entry_type = I40E_SD_TYPE_PAGED;
148 /* Set page address and valid bit */
149 page_desc = page->pa | 0x1;
150
151 pd_addr = (u64 *)pd_table->pd_page_addr.va;
152 pd_addr += rel_pd_idx;
153
154 /* Add the backing page physical address in the pd entry */
155 memcpy(pd_addr, &page_desc, sizeof(u64));
156
157 pd_entry->sd_index = sd_idx;
158 pd_entry->valid = true;
159 I40E_INC_PD_REFCNT(pd_table);
160 }
161 I40E_INC_BP_REFCNT(&pd_entry->bp);
162exit:
163 return ret_code;
164}
165
166/**
167 * i40e_remove_pd_bp - remove a backing page from a page descriptor
168 * @hw: pointer to our HW structure
169 * @hmc_info: pointer to the HMC configuration information structure
170 * @idx: the page index
171 *
172 * This function:
173 * 1. Marks the entry in pd tabe (for paged address mode) or in sd table
174 * (for direct address mode) invalid.
175 * 2. Write to register PMPDINV to invalidate the backing page in FV cache
176 * 3. Decrement the ref count for the pd _entry
177 * assumptions:
178 * 1. Caller can deallocate the memory used by backing storage after this
179 * function returns.
180 **/
181int i40e_remove_pd_bp(struct i40e_hw *hw,
182 struct i40e_hmc_info *hmc_info,
183 u32 idx)
184{
185 struct i40e_hmc_pd_entry *pd_entry;
186 struct i40e_hmc_pd_table *pd_table;
187 struct i40e_hmc_sd_entry *sd_entry;
188 u32 sd_idx, rel_pd_idx;
189 int ret_code = 0;
190 u64 *pd_addr;
191
192 /* calculate index */
193 sd_idx = idx / I40E_HMC_PD_CNT_IN_SD;
194 rel_pd_idx = idx % I40E_HMC_PD_CNT_IN_SD;
195 if (sd_idx >= hmc_info->sd_table.sd_cnt) {
196 ret_code = -EINVAL;
197 hw_dbg(hw, "i40e_remove_pd_bp: bad idx\n");
198 goto exit;
199 }
200 sd_entry = &hmc_info->sd_table.sd_entry[sd_idx];
201 if (I40E_SD_TYPE_PAGED != sd_entry->entry_type) {
202 ret_code = -EINVAL;
203 hw_dbg(hw, "i40e_remove_pd_bp: wrong sd_entry type\n");
204 goto exit;
205 }
206 /* get the entry and decrease its ref counter */
207 pd_table = &hmc_info->sd_table.sd_entry[sd_idx].u.pd_table;
208 pd_entry = &pd_table->pd_entry[rel_pd_idx];
209 I40E_DEC_BP_REFCNT(&pd_entry->bp);
210 if (pd_entry->bp.ref_cnt)
211 goto exit;
212
213 /* mark the entry invalid */
214 pd_entry->valid = false;
215 I40E_DEC_PD_REFCNT(pd_table);
216 pd_addr = (u64 *)pd_table->pd_page_addr.va;
217 pd_addr += rel_pd_idx;
218 memset(pd_addr, 0, sizeof(u64));
219 I40E_INVALIDATE_PF_HMC_PD(hw, sd_idx, idx);
220
221 /* free memory here */
222 if (!pd_entry->rsrc_pg)
223 ret_code = i40e_free_dma_mem(hw, &pd_entry->bp.addr);
224 if (ret_code)
225 goto exit;
226 if (!pd_table->ref_cnt)
227 i40e_free_virt_mem(hw, &pd_table->pd_entry_virt_mem);
228exit:
229 return ret_code;
230}
231
232/**
233 * i40e_prep_remove_sd_bp - Prepares to remove a backing page from a sd entry
234 * @hmc_info: pointer to the HMC configuration information structure
235 * @idx: the page index
236 **/
237int i40e_prep_remove_sd_bp(struct i40e_hmc_info *hmc_info,
238 u32 idx)
239{
240 struct i40e_hmc_sd_entry *sd_entry;
241 int ret_code = 0;
242
243 /* get the entry and decrease its ref counter */
244 sd_entry = &hmc_info->sd_table.sd_entry[idx];
245 I40E_DEC_BP_REFCNT(&sd_entry->u.bp);
246 if (sd_entry->u.bp.ref_cnt) {
247 ret_code = -EBUSY;
248 goto exit;
249 }
250 I40E_DEC_SD_REFCNT(&hmc_info->sd_table);
251
252 /* mark the entry invalid */
253 sd_entry->valid = false;
254exit:
255 return ret_code;
256}
257
258/**
259 * i40e_remove_sd_bp_new - Removes a backing page from a segment descriptor
260 * @hw: pointer to our hw struct
261 * @hmc_info: pointer to the HMC configuration information structure
262 * @idx: the page index
263 * @is_pf: used to distinguish between VF and PF
264 **/
265int i40e_remove_sd_bp_new(struct i40e_hw *hw,
266 struct i40e_hmc_info *hmc_info,
267 u32 idx, bool is_pf)
268{
269 struct i40e_hmc_sd_entry *sd_entry;
270
271 if (!is_pf)
272 return -EOPNOTSUPP;
273
274 /* get the entry and decrease its ref counter */
275 sd_entry = &hmc_info->sd_table.sd_entry[idx];
276 I40E_CLEAR_PF_SD_ENTRY(hw, idx, I40E_SD_TYPE_DIRECT);
277
278 return i40e_free_dma_mem(hw, &sd_entry->u.bp.addr);
279}
280
281/**
282 * i40e_prep_remove_pd_page - Prepares to remove a PD page from sd entry.
283 * @hmc_info: pointer to the HMC configuration information structure
284 * @idx: segment descriptor index to find the relevant page descriptor
285 **/
286int i40e_prep_remove_pd_page(struct i40e_hmc_info *hmc_info,
287 u32 idx)
288{
289 struct i40e_hmc_sd_entry *sd_entry;
290 int ret_code = 0;
291
292 sd_entry = &hmc_info->sd_table.sd_entry[idx];
293
294 if (sd_entry->u.pd_table.ref_cnt) {
295 ret_code = -EBUSY;
296 goto exit;
297 }
298
299 /* mark the entry invalid */
300 sd_entry->valid = false;
301
302 I40E_DEC_SD_REFCNT(&hmc_info->sd_table);
303exit:
304 return ret_code;
305}
306
307/**
308 * i40e_remove_pd_page_new - Removes a PD page from sd entry.
309 * @hw: pointer to our hw struct
310 * @hmc_info: pointer to the HMC configuration information structure
311 * @idx: segment descriptor index to find the relevant page descriptor
312 * @is_pf: used to distinguish between VF and PF
313 **/
314int i40e_remove_pd_page_new(struct i40e_hw *hw,
315 struct i40e_hmc_info *hmc_info,
316 u32 idx, bool is_pf)
317{
318 struct i40e_hmc_sd_entry *sd_entry;
319
320 if (!is_pf)
321 return -EOPNOTSUPP;
322
323 sd_entry = &hmc_info->sd_table.sd_entry[idx];
324 I40E_CLEAR_PF_SD_ENTRY(hw, idx, I40E_SD_TYPE_PAGED);
325
326 return i40e_free_dma_mem(hw, &sd_entry->u.pd_table.pd_page_addr);
327}
1// SPDX-License-Identifier: GPL-2.0
2/* Copyright(c) 2013 - 2018 Intel Corporation. */
3
4#include "i40e.h"
5#include "i40e_osdep.h"
6#include "i40e_register.h"
7#include "i40e_status.h"
8#include "i40e_alloc.h"
9#include "i40e_hmc.h"
10#include "i40e_type.h"
11
12/**
13 * i40e_add_sd_table_entry - Adds a segment descriptor to the table
14 * @hw: pointer to our hw struct
15 * @hmc_info: pointer to the HMC configuration information struct
16 * @sd_index: segment descriptor index to manipulate
17 * @type: what type of segment descriptor we're manipulating
18 * @direct_mode_sz: size to alloc in direct mode
19 **/
20i40e_status i40e_add_sd_table_entry(struct i40e_hw *hw,
21 struct i40e_hmc_info *hmc_info,
22 u32 sd_index,
23 enum i40e_sd_entry_type type,
24 u64 direct_mode_sz)
25{
26 enum i40e_memory_type mem_type __attribute__((unused));
27 struct i40e_hmc_sd_entry *sd_entry;
28 bool dma_mem_alloc_done = false;
29 struct i40e_dma_mem mem;
30 i40e_status ret_code = I40E_SUCCESS;
31 u64 alloc_len;
32
33 if (NULL == hmc_info->sd_table.sd_entry) {
34 ret_code = I40E_ERR_BAD_PTR;
35 hw_dbg(hw, "i40e_add_sd_table_entry: bad sd_entry\n");
36 goto exit;
37 }
38
39 if (sd_index >= hmc_info->sd_table.sd_cnt) {
40 ret_code = I40E_ERR_INVALID_SD_INDEX;
41 hw_dbg(hw, "i40e_add_sd_table_entry: bad sd_index\n");
42 goto exit;
43 }
44
45 sd_entry = &hmc_info->sd_table.sd_entry[sd_index];
46 if (!sd_entry->valid) {
47 if (I40E_SD_TYPE_PAGED == type) {
48 mem_type = i40e_mem_pd;
49 alloc_len = I40E_HMC_PAGED_BP_SIZE;
50 } else {
51 mem_type = i40e_mem_bp_jumbo;
52 alloc_len = direct_mode_sz;
53 }
54
55 /* allocate a 4K pd page or 2M backing page */
56 ret_code = i40e_allocate_dma_mem(hw, &mem, mem_type, alloc_len,
57 I40E_HMC_PD_BP_BUF_ALIGNMENT);
58 if (ret_code)
59 goto exit;
60 dma_mem_alloc_done = true;
61 if (I40E_SD_TYPE_PAGED == type) {
62 ret_code = i40e_allocate_virt_mem(hw,
63 &sd_entry->u.pd_table.pd_entry_virt_mem,
64 sizeof(struct i40e_hmc_pd_entry) * 512);
65 if (ret_code)
66 goto exit;
67 sd_entry->u.pd_table.pd_entry =
68 (struct i40e_hmc_pd_entry *)
69 sd_entry->u.pd_table.pd_entry_virt_mem.va;
70 sd_entry->u.pd_table.pd_page_addr = mem;
71 } else {
72 sd_entry->u.bp.addr = mem;
73 sd_entry->u.bp.sd_pd_index = sd_index;
74 }
75 /* initialize the sd entry */
76 hmc_info->sd_table.sd_entry[sd_index].entry_type = type;
77
78 /* increment the ref count */
79 I40E_INC_SD_REFCNT(&hmc_info->sd_table);
80 }
81 /* Increment backing page reference count */
82 if (I40E_SD_TYPE_DIRECT == sd_entry->entry_type)
83 I40E_INC_BP_REFCNT(&sd_entry->u.bp);
84exit:
85 if (ret_code)
86 if (dma_mem_alloc_done)
87 i40e_free_dma_mem(hw, &mem);
88
89 return ret_code;
90}
91
92/**
93 * i40e_add_pd_table_entry - Adds page descriptor to the specified table
94 * @hw: pointer to our HW structure
95 * @hmc_info: pointer to the HMC configuration information structure
96 * @pd_index: which page descriptor index to manipulate
97 * @rsrc_pg: if not NULL, use preallocated page instead of allocating new one.
98 *
99 * This function:
100 * 1. Initializes the pd entry
101 * 2. Adds pd_entry in the pd_table
102 * 3. Mark the entry valid in i40e_hmc_pd_entry structure
103 * 4. Initializes the pd_entry's ref count to 1
104 * assumptions:
105 * 1. The memory for pd should be pinned down, physically contiguous and
106 * aligned on 4K boundary and zeroed memory.
107 * 2. It should be 4K in size.
108 **/
109i40e_status i40e_add_pd_table_entry(struct i40e_hw *hw,
110 struct i40e_hmc_info *hmc_info,
111 u32 pd_index,
112 struct i40e_dma_mem *rsrc_pg)
113{
114 i40e_status ret_code = 0;
115 struct i40e_hmc_pd_table *pd_table;
116 struct i40e_hmc_pd_entry *pd_entry;
117 struct i40e_dma_mem mem;
118 struct i40e_dma_mem *page = &mem;
119 u32 sd_idx, rel_pd_idx;
120 u64 *pd_addr;
121 u64 page_desc;
122
123 if (pd_index / I40E_HMC_PD_CNT_IN_SD >= hmc_info->sd_table.sd_cnt) {
124 ret_code = I40E_ERR_INVALID_PAGE_DESC_INDEX;
125 hw_dbg(hw, "i40e_add_pd_table_entry: bad pd_index\n");
126 goto exit;
127 }
128
129 /* find corresponding sd */
130 sd_idx = (pd_index / I40E_HMC_PD_CNT_IN_SD);
131 if (I40E_SD_TYPE_PAGED !=
132 hmc_info->sd_table.sd_entry[sd_idx].entry_type)
133 goto exit;
134
135 rel_pd_idx = (pd_index % I40E_HMC_PD_CNT_IN_SD);
136 pd_table = &hmc_info->sd_table.sd_entry[sd_idx].u.pd_table;
137 pd_entry = &pd_table->pd_entry[rel_pd_idx];
138 if (!pd_entry->valid) {
139 if (rsrc_pg) {
140 pd_entry->rsrc_pg = true;
141 page = rsrc_pg;
142 } else {
143 /* allocate a 4K backing page */
144 ret_code = i40e_allocate_dma_mem(hw, page, i40e_mem_bp,
145 I40E_HMC_PAGED_BP_SIZE,
146 I40E_HMC_PD_BP_BUF_ALIGNMENT);
147 if (ret_code)
148 goto exit;
149 pd_entry->rsrc_pg = false;
150 }
151
152 pd_entry->bp.addr = *page;
153 pd_entry->bp.sd_pd_index = pd_index;
154 pd_entry->bp.entry_type = I40E_SD_TYPE_PAGED;
155 /* Set page address and valid bit */
156 page_desc = page->pa | 0x1;
157
158 pd_addr = (u64 *)pd_table->pd_page_addr.va;
159 pd_addr += rel_pd_idx;
160
161 /* Add the backing page physical address in the pd entry */
162 memcpy(pd_addr, &page_desc, sizeof(u64));
163
164 pd_entry->sd_index = sd_idx;
165 pd_entry->valid = true;
166 I40E_INC_PD_REFCNT(pd_table);
167 }
168 I40E_INC_BP_REFCNT(&pd_entry->bp);
169exit:
170 return ret_code;
171}
172
173/**
174 * i40e_remove_pd_bp - remove a backing page from a page descriptor
175 * @hw: pointer to our HW structure
176 * @hmc_info: pointer to the HMC configuration information structure
177 * @idx: the page index
178 *
179 * This function:
180 * 1. Marks the entry in pd tabe (for paged address mode) or in sd table
181 * (for direct address mode) invalid.
182 * 2. Write to register PMPDINV to invalidate the backing page in FV cache
183 * 3. Decrement the ref count for the pd _entry
184 * assumptions:
185 * 1. Caller can deallocate the memory used by backing storage after this
186 * function returns.
187 **/
188i40e_status i40e_remove_pd_bp(struct i40e_hw *hw,
189 struct i40e_hmc_info *hmc_info,
190 u32 idx)
191{
192 i40e_status ret_code = 0;
193 struct i40e_hmc_pd_entry *pd_entry;
194 struct i40e_hmc_pd_table *pd_table;
195 struct i40e_hmc_sd_entry *sd_entry;
196 u32 sd_idx, rel_pd_idx;
197 u64 *pd_addr;
198
199 /* calculate index */
200 sd_idx = idx / I40E_HMC_PD_CNT_IN_SD;
201 rel_pd_idx = idx % I40E_HMC_PD_CNT_IN_SD;
202 if (sd_idx >= hmc_info->sd_table.sd_cnt) {
203 ret_code = I40E_ERR_INVALID_PAGE_DESC_INDEX;
204 hw_dbg(hw, "i40e_remove_pd_bp: bad idx\n");
205 goto exit;
206 }
207 sd_entry = &hmc_info->sd_table.sd_entry[sd_idx];
208 if (I40E_SD_TYPE_PAGED != sd_entry->entry_type) {
209 ret_code = I40E_ERR_INVALID_SD_TYPE;
210 hw_dbg(hw, "i40e_remove_pd_bp: wrong sd_entry type\n");
211 goto exit;
212 }
213 /* get the entry and decrease its ref counter */
214 pd_table = &hmc_info->sd_table.sd_entry[sd_idx].u.pd_table;
215 pd_entry = &pd_table->pd_entry[rel_pd_idx];
216 I40E_DEC_BP_REFCNT(&pd_entry->bp);
217 if (pd_entry->bp.ref_cnt)
218 goto exit;
219
220 /* mark the entry invalid */
221 pd_entry->valid = false;
222 I40E_DEC_PD_REFCNT(pd_table);
223 pd_addr = (u64 *)pd_table->pd_page_addr.va;
224 pd_addr += rel_pd_idx;
225 memset(pd_addr, 0, sizeof(u64));
226 I40E_INVALIDATE_PF_HMC_PD(hw, sd_idx, idx);
227
228 /* free memory here */
229 if (!pd_entry->rsrc_pg)
230 ret_code = i40e_free_dma_mem(hw, &pd_entry->bp.addr);
231 if (ret_code)
232 goto exit;
233 if (!pd_table->ref_cnt)
234 i40e_free_virt_mem(hw, &pd_table->pd_entry_virt_mem);
235exit:
236 return ret_code;
237}
238
239/**
240 * i40e_prep_remove_sd_bp - Prepares to remove a backing page from a sd entry
241 * @hmc_info: pointer to the HMC configuration information structure
242 * @idx: the page index
243 **/
244i40e_status i40e_prep_remove_sd_bp(struct i40e_hmc_info *hmc_info,
245 u32 idx)
246{
247 i40e_status ret_code = 0;
248 struct i40e_hmc_sd_entry *sd_entry;
249
250 /* get the entry and decrease its ref counter */
251 sd_entry = &hmc_info->sd_table.sd_entry[idx];
252 I40E_DEC_BP_REFCNT(&sd_entry->u.bp);
253 if (sd_entry->u.bp.ref_cnt) {
254 ret_code = I40E_ERR_NOT_READY;
255 goto exit;
256 }
257 I40E_DEC_SD_REFCNT(&hmc_info->sd_table);
258
259 /* mark the entry invalid */
260 sd_entry->valid = false;
261exit:
262 return ret_code;
263}
264
265/**
266 * i40e_remove_sd_bp_new - Removes a backing page from a segment descriptor
267 * @hw: pointer to our hw struct
268 * @hmc_info: pointer to the HMC configuration information structure
269 * @idx: the page index
270 * @is_pf: used to distinguish between VF and PF
271 **/
272i40e_status i40e_remove_sd_bp_new(struct i40e_hw *hw,
273 struct i40e_hmc_info *hmc_info,
274 u32 idx, bool is_pf)
275{
276 struct i40e_hmc_sd_entry *sd_entry;
277
278 if (!is_pf)
279 return I40E_NOT_SUPPORTED;
280
281 /* get the entry and decrease its ref counter */
282 sd_entry = &hmc_info->sd_table.sd_entry[idx];
283 I40E_CLEAR_PF_SD_ENTRY(hw, idx, I40E_SD_TYPE_DIRECT);
284
285 return i40e_free_dma_mem(hw, &sd_entry->u.bp.addr);
286}
287
288/**
289 * i40e_prep_remove_pd_page - Prepares to remove a PD page from sd entry.
290 * @hmc_info: pointer to the HMC configuration information structure
291 * @idx: segment descriptor index to find the relevant page descriptor
292 **/
293i40e_status i40e_prep_remove_pd_page(struct i40e_hmc_info *hmc_info,
294 u32 idx)
295{
296 i40e_status ret_code = 0;
297 struct i40e_hmc_sd_entry *sd_entry;
298
299 sd_entry = &hmc_info->sd_table.sd_entry[idx];
300
301 if (sd_entry->u.pd_table.ref_cnt) {
302 ret_code = I40E_ERR_NOT_READY;
303 goto exit;
304 }
305
306 /* mark the entry invalid */
307 sd_entry->valid = false;
308
309 I40E_DEC_SD_REFCNT(&hmc_info->sd_table);
310exit:
311 return ret_code;
312}
313
314/**
315 * i40e_remove_pd_page_new - Removes a PD page from sd entry.
316 * @hw: pointer to our hw struct
317 * @hmc_info: pointer to the HMC configuration information structure
318 * @idx: segment descriptor index to find the relevant page descriptor
319 * @is_pf: used to distinguish between VF and PF
320 **/
321i40e_status i40e_remove_pd_page_new(struct i40e_hw *hw,
322 struct i40e_hmc_info *hmc_info,
323 u32 idx, bool is_pf)
324{
325 struct i40e_hmc_sd_entry *sd_entry;
326
327 if (!is_pf)
328 return I40E_NOT_SUPPORTED;
329
330 sd_entry = &hmc_info->sd_table.sd_entry[idx];
331 I40E_CLEAR_PF_SD_ENTRY(hw, idx, I40E_SD_TYPE_PAGED);
332
333 return i40e_free_dma_mem(hw, &sd_entry->u.pd_table.pd_page_addr);
334}