net/virtio: fix incorrect cast of void *
[dpdk.git] / drivers / net / i40e / base / i40e_hmc.h
1 /*******************************************************************************
2
3 Copyright (c) 2013 - 2015, Intel Corporation
4 All rights reserved.
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32 ***************************************************************************/
33
34 #ifndef _I40E_HMC_H_
35 #define _I40E_HMC_H_
36
37 #define I40E_HMC_MAX_BP_COUNT 512
38
39 /* forward-declare the HW struct for the compiler */
40 struct i40e_hw;
41
42 #define I40E_HMC_INFO_SIGNATURE         0x484D5347 /* HMSG */
43 #define I40E_HMC_PD_CNT_IN_SD           512
44 #define I40E_HMC_DIRECT_BP_SIZE         0x200000 /* 2M */
45 #define I40E_HMC_PAGED_BP_SIZE          4096
46 #define I40E_HMC_PD_BP_BUF_ALIGNMENT    4096
47 #define I40E_FIRST_VF_FPM_ID            16
48
49 struct i40e_hmc_obj_info {
50         u64 base;       /* base addr in FPM */
51         u32 max_cnt;    /* max count available for this hmc func */
52         u32 cnt;        /* count of objects driver actually wants to create */
53         u64 size;       /* size in bytes of one object */
54 };
55
56 enum i40e_sd_entry_type {
57         I40E_SD_TYPE_INVALID = 0,
58         I40E_SD_TYPE_PAGED   = 1,
59         I40E_SD_TYPE_DIRECT  = 2
60 };
61
62 struct i40e_hmc_bp {
63         enum i40e_sd_entry_type entry_type;
64         struct i40e_dma_mem addr; /* populate to be used by hw */
65         u32 sd_pd_index;
66         u32 ref_cnt;
67 };
68
69 struct i40e_hmc_pd_entry {
70         struct i40e_hmc_bp bp;
71         u32 sd_index;
72         bool rsrc_pg;
73         bool valid;
74 };
75
76 struct i40e_hmc_pd_table {
77         struct i40e_dma_mem pd_page_addr; /* populate to be used by hw */
78         struct i40e_hmc_pd_entry  *pd_entry; /* [512] for sw book keeping */
79         struct i40e_virt_mem pd_entry_virt_mem; /* virt mem for pd_entry */
80
81         u32 ref_cnt;
82         u32 sd_index;
83 };
84
85 struct i40e_hmc_sd_entry {
86         enum i40e_sd_entry_type entry_type;
87         bool valid;
88
89         union {
90                 struct i40e_hmc_pd_table pd_table;
91                 struct i40e_hmc_bp bp;
92         } u;
93 };
94
95 struct i40e_hmc_sd_table {
96         struct i40e_virt_mem addr; /* used to track sd_entry allocations */
97         u32 sd_cnt;
98         u32 ref_cnt;
99         struct i40e_hmc_sd_entry *sd_entry; /* (sd_cnt*512) entries max */
100 };
101
102 struct i40e_hmc_info {
103         u32 signature;
104         /* equals to pci func num for PF and dynamically allocated for VFs */
105         u8 hmc_fn_id;
106         u16 first_sd_index; /* index of the first available SD */
107
108         /* hmc objects */
109         struct i40e_hmc_obj_info *hmc_obj;
110         struct i40e_virt_mem hmc_obj_virt_mem;
111         struct i40e_hmc_sd_table sd_table;
112 };
113
114 #define I40E_INC_SD_REFCNT(sd_table)    ((sd_table)->ref_cnt++)
115 #define I40E_INC_PD_REFCNT(pd_table)    ((pd_table)->ref_cnt++)
116 #define I40E_INC_BP_REFCNT(bp)          ((bp)->ref_cnt++)
117
118 #define I40E_DEC_SD_REFCNT(sd_table)    ((sd_table)->ref_cnt--)
119 #define I40E_DEC_PD_REFCNT(pd_table)    ((pd_table)->ref_cnt--)
120 #define I40E_DEC_BP_REFCNT(bp)          ((bp)->ref_cnt--)
121
122 /**
123  * I40E_SET_PF_SD_ENTRY - marks the sd entry as valid in the hardware
124  * @hw: pointer to our hw struct
125  * @pa: pointer to physical address
126  * @sd_index: segment descriptor index
127  * @type: if sd entry is direct or paged
128  **/
129 #define I40E_SET_PF_SD_ENTRY(hw, pa, sd_index, type)                    \
130 {                                                                       \
131         u32 val1, val2, val3;                                           \
132         val1 = (u32)(I40E_HI_DWORD(pa));                                \
133         val2 = (u32)(pa) | (I40E_HMC_MAX_BP_COUNT <<                    \
134                  I40E_PFHMC_SDDATALOW_PMSDBPCOUNT_SHIFT) |              \
135                 ((((type) == I40E_SD_TYPE_PAGED) ? 0 : 1) <<            \
136                 I40E_PFHMC_SDDATALOW_PMSDTYPE_SHIFT) |                  \
137                 BIT(I40E_PFHMC_SDDATALOW_PMSDVALID_SHIFT);              \
138         val3 = (sd_index) | BIT_ULL(I40E_PFHMC_SDCMD_PMSDWR_SHIFT);     \
139         wr32((hw), I40E_PFHMC_SDDATAHIGH, val1);                        \
140         wr32((hw), I40E_PFHMC_SDDATALOW, val2);                         \
141         wr32((hw), I40E_PFHMC_SDCMD, val3);                             \
142 }
143
144 /**
145  * I40E_CLEAR_PF_SD_ENTRY - marks the sd entry as invalid in the hardware
146  * @hw: pointer to our hw struct
147  * @sd_index: segment descriptor index
148  * @type: if sd entry is direct or paged
149  **/
150 #define I40E_CLEAR_PF_SD_ENTRY(hw, sd_index, type)                      \
151 {                                                                       \
152         u32 val2, val3;                                                 \
153         val2 = (I40E_HMC_MAX_BP_COUNT <<                                \
154                 I40E_PFHMC_SDDATALOW_PMSDBPCOUNT_SHIFT) |               \
155                 ((((type) == I40E_SD_TYPE_PAGED) ? 0 : 1) <<            \
156                 I40E_PFHMC_SDDATALOW_PMSDTYPE_SHIFT);                   \
157         val3 = (sd_index) | BIT_ULL(I40E_PFHMC_SDCMD_PMSDWR_SHIFT);     \
158         wr32((hw), I40E_PFHMC_SDDATAHIGH, 0);                           \
159         wr32((hw), I40E_PFHMC_SDDATALOW, val2);                         \
160         wr32((hw), I40E_PFHMC_SDCMD, val3);                             \
161 }
162
163 /**
164  * I40E_INVALIDATE_PF_HMC_PD - Invalidates the pd cache in the hardware
165  * @hw: pointer to our hw struct
166  * @sd_idx: segment descriptor index
167  * @pd_idx: page descriptor index
168  **/
169 #define I40E_INVALIDATE_PF_HMC_PD(hw, sd_idx, pd_idx)                   \
170         wr32((hw), I40E_PFHMC_PDINV,                                    \
171             (((sd_idx) << I40E_PFHMC_PDINV_PMSDIDX_SHIFT) |             \
172              ((pd_idx) << I40E_PFHMC_PDINV_PMPDIDX_SHIFT)))
173
174 /**
175  * I40E_FIND_SD_INDEX_LIMIT - finds segment descriptor index limit
176  * @hmc_info: pointer to the HMC configuration information structure
177  * @type: type of HMC resources we're searching
178  * @index: starting index for the object
179  * @cnt: number of objects we're trying to create
180  * @sd_idx: pointer to return index of the segment descriptor in question
181  * @sd_limit: pointer to return the maximum number of segment descriptors
182  *
183  * This function calculates the segment descriptor index and index limit
184  * for the resource defined by i40e_hmc_rsrc_type.
185  **/
186 #define I40E_FIND_SD_INDEX_LIMIT(hmc_info, type, index, cnt, sd_idx, sd_limit)\
187 {                                                                       \
188         u64 fpm_addr, fpm_limit;                                        \
189         fpm_addr = (hmc_info)->hmc_obj[(type)].base +                   \
190                    (hmc_info)->hmc_obj[(type)].size * (index);          \
191         fpm_limit = fpm_addr + (hmc_info)->hmc_obj[(type)].size * (cnt);\
192         *(sd_idx) = (u32)(fpm_addr / I40E_HMC_DIRECT_BP_SIZE);          \
193         *(sd_limit) = (u32)((fpm_limit - 1) / I40E_HMC_DIRECT_BP_SIZE); \
194         /* add one more to the limit to correct our range */            \
195         *(sd_limit) += 1;                                               \
196 }
197
198 /**
199  * I40E_FIND_PD_INDEX_LIMIT - finds page descriptor index limit
200  * @hmc_info: pointer to the HMC configuration information struct
201  * @type: HMC resource type we're examining
202  * @idx: starting index for the object
203  * @cnt: number of objects we're trying to create
204  * @pd_index: pointer to return page descriptor index
205  * @pd_limit: pointer to return page descriptor index limit
206  *
207  * Calculates the page descriptor index and index limit for the resource
208  * defined by i40e_hmc_rsrc_type.
209  **/
210 #define I40E_FIND_PD_INDEX_LIMIT(hmc_info, type, idx, cnt, pd_index, pd_limit)\
211 {                                                                       \
212         u64 fpm_adr, fpm_limit;                                         \
213         fpm_adr = (hmc_info)->hmc_obj[(type)].base +                    \
214                   (hmc_info)->hmc_obj[(type)].size * (idx);             \
215         fpm_limit = fpm_adr + (hmc_info)->hmc_obj[(type)].size * (cnt); \
216         *(pd_index) = (u32)(fpm_adr / I40E_HMC_PAGED_BP_SIZE);          \
217         *(pd_limit) = (u32)((fpm_limit - 1) / I40E_HMC_PAGED_BP_SIZE);  \
218         /* add one more to the limit to correct our range */            \
219         *(pd_limit) += 1;                                               \
220 }
221 enum i40e_status_code i40e_add_sd_table_entry(struct i40e_hw *hw,
222                                               struct i40e_hmc_info *hmc_info,
223                                               u32 sd_index,
224                                               enum i40e_sd_entry_type type,
225                                               u64 direct_mode_sz);
226
227 enum i40e_status_code i40e_add_pd_table_entry(struct i40e_hw *hw,
228                                               struct i40e_hmc_info *hmc_info,
229                                               u32 pd_index,
230                                               struct i40e_dma_mem *rsrc_pg);
231 enum i40e_status_code i40e_remove_pd_bp(struct i40e_hw *hw,
232                                         struct i40e_hmc_info *hmc_info,
233                                         u32 idx);
234 enum i40e_status_code i40e_prep_remove_sd_bp(struct i40e_hmc_info *hmc_info,
235                                              u32 idx);
236 enum i40e_status_code i40e_remove_sd_bp_new(struct i40e_hw *hw,
237                                             struct i40e_hmc_info *hmc_info,
238                                             u32 idx, bool is_pf);
239 enum i40e_status_code i40e_prep_remove_pd_page(struct i40e_hmc_info *hmc_info,
240                                                u32 idx);
241 enum i40e_status_code i40e_remove_pd_page_new(struct i40e_hw *hw,
242                                               struct i40e_hmc_info *hmc_info,
243                                               u32 idx, bool is_pf);
244
245 #endif /* _I40E_HMC_H_ */