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/*******************************************************************************
Copyright (c) 2013 - 2015, Intel Corporation
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
2. 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.
3. Neither the name of the Intel Corporation nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
***************************************************************************/
#ifndef _AVF_HMC_H_
#define _AVF_HMC_H_
#define AVF_HMC_MAX_BP_COUNT 512
/* forward-declare the HW struct for the compiler */
struct avf_hw;
#define AVF_HMC_INFO_SIGNATURE 0x484D5347 /* HMSG */
#define AVF_HMC_PD_CNT_IN_SD 512
#define AVF_HMC_DIRECT_BP_SIZE 0x200000 /* 2M */
#define AVF_HMC_PAGED_BP_SIZE 4096
#define AVF_HMC_PD_BP_BUF_ALIGNMENT 4096
#define AVF_FIRST_VF_FPM_ID 16
struct avf_hmc_obj_info {
u64 base; /* base addr in FPM */
u32 max_cnt; /* max count available for this hmc func */
u32 cnt; /* count of objects driver actually wants to create */
u64 size; /* size in bytes of one object */
};
enum avf_sd_entry_type {
AVF_SD_TYPE_INVALID = 0,
AVF_SD_TYPE_PAGED = 1,
AVF_SD_TYPE_DIRECT = 2
};
struct avf_hmc_bp {
enum avf_sd_entry_type entry_type;
struct avf_dma_mem addr; /* populate to be used by hw */
u32 sd_pd_index;
u32 ref_cnt;
};
struct avf_hmc_pd_entry {
struct avf_hmc_bp bp;
u32 sd_index;
bool rsrc_pg;
bool valid;
};
struct avf_hmc_pd_table {
struct avf_dma_mem pd_page_addr; /* populate to be used by hw */
struct avf_hmc_pd_entry *pd_entry; /* [512] for sw book keeping */
struct avf_virt_mem pd_entry_virt_mem; /* virt mem for pd_entry */
u32 ref_cnt;
u32 sd_index;
};
struct avf_hmc_sd_entry {
enum avf_sd_entry_type entry_type;
bool valid;
union {
struct avf_hmc_pd_table pd_table;
struct avf_hmc_bp bp;
} u;
};
struct avf_hmc_sd_table {
struct avf_virt_mem addr; /* used to track sd_entry allocations */
u32 sd_cnt;
u32 ref_cnt;
struct avf_hmc_sd_entry *sd_entry; /* (sd_cnt*512) entries max */
};
struct avf_hmc_info {
u32 signature;
/* equals to pci func num for PF and dynamically allocated for VFs */
u8 hmc_fn_id;
u16 first_sd_index; /* index of the first available SD */
/* hmc objects */
struct avf_hmc_obj_info *hmc_obj;
struct avf_virt_mem hmc_obj_virt_mem;
struct avf_hmc_sd_table sd_table;
};
#define AVF_INC_SD_REFCNT(sd_table) ((sd_table)->ref_cnt++)
#define AVF_INC_PD_REFCNT(pd_table) ((pd_table)->ref_cnt++)
#define AVF_INC_BP_REFCNT(bp) ((bp)->ref_cnt++)
#define AVF_DEC_SD_REFCNT(sd_table) ((sd_table)->ref_cnt--)
#define AVF_DEC_PD_REFCNT(pd_table) ((pd_table)->ref_cnt--)
#define AVF_DEC_BP_REFCNT(bp) ((bp)->ref_cnt--)
/**
* AVF_SET_PF_SD_ENTRY - marks the sd entry as valid in the hardware
* @hw: pointer to our hw struct
* @pa: pointer to physical address
* @sd_index: segment descriptor index
* @type: if sd entry is direct or paged
**/
#define AVF_SET_PF_SD_ENTRY(hw, pa, sd_index, type) \
{ \
u32 val1, val2, val3; \
val1 = (u32)(AVF_HI_DWORD(pa)); \
val2 = (u32)(pa) | (AVF_HMC_MAX_BP_COUNT << \
AVF_PFHMC_SDDATALOW_PMSDBPCOUNT_SHIFT) | \
((((type) == AVF_SD_TYPE_PAGED) ? 0 : 1) << \
AVF_PFHMC_SDDATALOW_PMSDTYPE_SHIFT) | \
BIT(AVF_PFHMC_SDDATALOW_PMSDVALID_SHIFT); \
val3 = (sd_index) | BIT_ULL(AVF_PFHMC_SDCMD_PMSDWR_SHIFT); \
wr32((hw), AVF_PFHMC_SDDATAHIGH, val1); \
wr32((hw), AVF_PFHMC_SDDATALOW, val2); \
wr32((hw), AVF_PFHMC_SDCMD, val3); \
}
/**
* AVF_CLEAR_PF_SD_ENTRY - marks the sd entry as invalid in the hardware
* @hw: pointer to our hw struct
* @sd_index: segment descriptor index
* @type: if sd entry is direct or paged
**/
#define AVF_CLEAR_PF_SD_ENTRY(hw, sd_index, type) \
{ \
u32 val2, val3; \
val2 = (AVF_HMC_MAX_BP_COUNT << \
AVF_PFHMC_SDDATALOW_PMSDBPCOUNT_SHIFT) | \
((((type) == AVF_SD_TYPE_PAGED) ? 0 : 1) << \
AVF_PFHMC_SDDATALOW_PMSDTYPE_SHIFT); \
val3 = (sd_index) | BIT_ULL(AVF_PFHMC_SDCMD_PMSDWR_SHIFT); \
wr32((hw), AVF_PFHMC_SDDATAHIGH, 0); \
wr32((hw), AVF_PFHMC_SDDATALOW, val2); \
wr32((hw), AVF_PFHMC_SDCMD, val3); \
}
/**
* AVF_INVALIDATE_PF_HMC_PD - Invalidates the pd cache in the hardware
* @hw: pointer to our hw struct
* @sd_idx: segment descriptor index
* @pd_idx: page descriptor index
**/
#define AVF_INVALIDATE_PF_HMC_PD(hw, sd_idx, pd_idx) \
wr32((hw), AVF_PFHMC_PDINV, \
(((sd_idx) << AVF_PFHMC_PDINV_PMSDIDX_SHIFT) | \
((pd_idx) << AVF_PFHMC_PDINV_PMPDIDX_SHIFT)))
/**
* AVF_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
* @index: 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 avf_hmc_rsrc_type.
**/
#define AVF_FIND_SD_INDEX_LIMIT(hmc_info, type, index, cnt, sd_idx, sd_limit)\
{ \
u64 fpm_addr, fpm_limit; \
fpm_addr = (hmc_info)->hmc_obj[(type)].base + \
(hmc_info)->hmc_obj[(type)].size * (index); \
fpm_limit = fpm_addr + (hmc_info)->hmc_obj[(type)].size * (cnt);\
*(sd_idx) = (u32)(fpm_addr / AVF_HMC_DIRECT_BP_SIZE); \
*(sd_limit) = (u32)((fpm_limit - 1) / AVF_HMC_DIRECT_BP_SIZE); \
/* add one more to the limit to correct our range */ \
*(sd_limit) += 1; \
}
/**
* AVF_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_index: 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 avf_hmc_rsrc_type.
**/
#define AVF_FIND_PD_INDEX_LIMIT(hmc_info, type, idx, cnt, pd_index, 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_index) = (u32)(fpm_adr / AVF_HMC_PAGED_BP_SIZE); \
*(pd_limit) = (u32)((fpm_limit - 1) / AVF_HMC_PAGED_BP_SIZE); \
/* add one more to the limit to correct our range */ \
*(pd_limit) += 1; \
}
enum avf_status_code avf_add_sd_table_entry(struct avf_hw *hw,
struct avf_hmc_info *hmc_info,
u32 sd_index,
enum avf_sd_entry_type type,
u64 direct_mode_sz);
enum avf_status_code avf_add_pd_table_entry(struct avf_hw *hw,
struct avf_hmc_info *hmc_info,
u32 pd_index,
struct avf_dma_mem *rsrc_pg);
enum avf_status_code avf_remove_pd_bp(struct avf_hw *hw,
struct avf_hmc_info *hmc_info,
u32 idx);
enum avf_status_code avf_prep_remove_sd_bp(struct avf_hmc_info *hmc_info,
u32 idx);
enum avf_status_code avf_remove_sd_bp_new(struct avf_hw *hw,
struct avf_hmc_info *hmc_info,
u32 idx, bool is_pf);
enum avf_status_code avf_prep_remove_pd_page(struct avf_hmc_info *hmc_info,
u32 idx);
enum avf_status_code avf_remove_pd_page_new(struct avf_hw *hw,
struct avf_hmc_info *hmc_info,
u32 idx, bool is_pf);
#endif /* _AVF_HMC_H_ */
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