/* QLogic qed NIC Driver
* Copyright (c) 2015-2017 QLogic Corporation
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
* General Public License (GPL) Version 2, available from the file
* COPYING in the main directory of this source tree, or the
* OpenIB.org BSD license below:
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
*
* - 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.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef _QED_INT_H
#define _QED_INT_H
#include <linux/types.h>
#include <linux/slab.h>
#include "qed.h"
/* Fields of IGU PF CONFIGRATION REGISTER */
#define IGU_PF_CONF_FUNC_EN (0x1 << 0) /* function enable */
#define IGU_PF_CONF_MSI_MSIX_EN (0x1 << 1) /* MSI/MSIX enable */
#define IGU_PF_CONF_INT_LINE_EN (0x1 << 2) /* INT enable */
#define IGU_PF_CONF_ATTN_BIT_EN (0x1 << 3) /* attention enable */
#define IGU_PF_CONF_SINGLE_ISR_EN (0x1 << 4) /* single ISR mode enable */
#define IGU_PF_CONF_SIMD_MODE (0x1 << 5) /* simd all ones mode */
/* Fields of IGU VF CONFIGRATION REGISTER */
#define IGU_VF_CONF_FUNC_EN (0x1 << 0) /* function enable */
#define IGU_VF_CONF_MSI_MSIX_EN (0x1 << 1) /* MSI/MSIX enable */
#define IGU_VF_CONF_SINGLE_ISR_EN (0x1 << 4) /* single ISR mode enable */
#define IGU_VF_CONF_PARENT_MASK (0xF) /* Parent PF */
#define IGU_VF_CONF_PARENT_SHIFT 5 /* Parent PF */
/* Igu control commands
*/
enum igu_ctrl_cmd {
IGU_CTRL_CMD_TYPE_RD,
IGU_CTRL_CMD_TYPE_WR,
MAX_IGU_CTRL_CMD
};
/* Control register for the IGU command register
*/
struct igu_ctrl_reg {
u32 ctrl_data;
#define IGU_CTRL_REG_FID_MASK 0xFFFF /* Opaque_FID */
#define IGU_CTRL_REG_FID_SHIFT 0
#define IGU_CTRL_REG_PXP_ADDR_MASK 0xFFF /* Command address */
#define IGU_CTRL_REG_PXP_ADDR_SHIFT 16
#define IGU_CTRL_REG_RESERVED_MASK 0x1
#define IGU_CTRL_REG_RESERVED_SHIFT 28
#define IGU_CTRL_REG_TYPE_MASK 0x1 /* use enum igu_ctrl_cmd */
#define IGU_CTRL_REG_TYPE_SHIFT 31
};
enum qed_coalescing_fsm {
QED_COAL_RX_STATE_MACHINE,
QED_COAL_TX_STATE_MACHINE
};
/**
* @brief qed_int_igu_enable_int - enable device interrupts
*
* @param p_hwfn
* @param p_ptt
* @param int_mode - interrupt mode to use
*/
void qed_int_igu_enable_int(struct qed_hwfn *p_hwfn,
struct qed_ptt *p_ptt,
enum qed_int_mode int_mode);
/**
* @brief qed_int_igu_disable_int - disable device interrupts
*
* @param p_hwfn
* @param p_ptt
*/
void qed_int_igu_disable_int(struct qed_hwfn *p_hwfn,
struct qed_ptt *p_ptt);
/**
* @brief qed_int_igu_read_sisr_reg - Reads the single isr multiple dpc
* register from igu.
*
* @param p_hwfn
*
* @return u64
*/
u64 qed_int_igu_read_sisr_reg(struct qed_hwfn *p_hwfn);
#define QED_SP_SB_ID 0xffff
/**
* @brief qed_int_sb_init - Initializes the sb_info structure.
*
* once the structure is initialized it can be passed to sb related functions.
*
* @param p_hwfn
* @param p_ptt
* @param sb_info points to an uninitialized (but
* allocated) sb_info structure
* @param sb_virt_addr
* @param sb_phy_addr
* @param sb_id the sb_id to be used (zero based in driver)
* should use QED_SP_SB_ID for SP Status block
*
* @return int
*/
int qed_int_sb_init(struct qed_hwfn *p_hwfn,
struct qed_ptt *p_ptt,
struct qed_sb_info *sb_info,
void *sb_virt_addr,
dma_addr_t sb_phy_addr,
u16 sb_id);
/**
* @brief qed_int_sb_setup - Setup the sb.
*
* @param p_hwfn
* @param p_ptt
* @param sb_info initialized sb_info structure
*/
void qed_int_sb_setup(struct qed_hwfn *p_hwfn,
struct qed_ptt *p_ptt,
struct qed_sb_info *sb_info);
/**
* @brief qed_int_sb_release - releases the sb_info structure.
*
* once the structure is released, it's memory can be freed
*
* @param p_hwfn
* @param sb_info points to an allocated sb_info structure
* @param sb_id the sb_id to be used (zero based in driver)
* should never be equal to QED_SP_SB_ID
* (SP Status block)
*
* @return int
*/
int qed_int_sb_release(struct qed_hwfn *p_hwfn,
struct qed_sb_info *sb_info,
u16 sb_id);
/**
* @brief qed_int_sp_dpc - To be called when an interrupt is received on the
* default status block.
*
* @param p_hwfn - pointer to hwfn
*
*/
void qed_int_sp_dpc(unsigned long hwfn_cookie);
/**
* @brief qed_int_get_num_sbs - get the number of status
* blocks configured for this funciton in the igu.
*
* @param p_hwfn
* @param p_sb_cnt_info
*
* @return int - number of status blocks configured
*/
void qed_int_get_num_sbs(struct qed_hwfn *p_hwfn,
struct qed_sb_cnt_info *p_sb_cnt_info);
/**
* @brief qed_int_disable_post_isr_release - performs the cleanup post ISR
* release. The API need to be called after releasing all slowpath IRQs
* of the device.
*
* @param cdev
*
*/
void qed_int_disable_post_isr_release(struct qed_dev *cdev);
/**
* @brief - Doorbell Recovery handler.
* Run DB_REAL_DEAL doorbell recovery in case of PF overflow
* (and flush DORQ if needed), otherwise run DB_REC_ONCE.
*
* @param p_hwfn
* @param p_ptt
*/
int qed_db_rec_handler(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt);
#define QED_CAU_DEF_RX_TIMER_RES 0
#define QED_CAU_DEF_TX_TIMER_RES 0
#define QED_SB_ATT_IDX 0x0001
#define QED_SB_EVENT_MASK 0x0003
#define SB_ALIGNED_SIZE(p_hwfn) \
ALIGNED_TYPE_SIZE(struct status_block_e4, p_hwfn)
#define QED_SB_INVALID_IDX 0xffff
struct qed_igu_block {
u8 status;
#define QED_IGU_STATUS_FREE 0x01
#define QED_IGU_STATUS_VALID 0x02
#define QED_IGU_STATUS_PF 0x04
#define QED_IGU_STATUS_DSB 0x08
u8 vector_number;
u8 function_id;
u8 is_pf;
/* Index inside IGU [meant for back reference] */
u16 igu_sb_id;
struct qed_sb_info *sb_info;
};
struct qed_igu_info {
struct qed_igu_block entry[MAX_TOT_SB_PER_PATH];
u16 igu_dsb_id;
struct qed_sb_cnt_info usage;
bool b_allow_pf_vf_change;
};
/**
* @brief - Make sure the IGU CAM reflects the resources provided by MFW
*
* @param p_hwfn
* @param p_ptt
*/
int qed_int_igu_reset_cam(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt);
/**
* @brief Translate the weakly-defined client sb-id into an IGU sb-id
*
* @param p_hwfn
* @param sb_id - user provided sb_id
*
* @return an index inside IGU CAM where the SB resides
*/
u16 qed_get_igu_sb_id(struct qed_hwfn *p_hwfn, u16 sb_id);
/**
* @brief return a pointer to an unused valid SB
*
* @param p_hwfn
* @param b_is_pf - true iff we want a SB belonging to a PF
*
* @return point to an igu_block, NULL if none is available
*/
struct qed_igu_block *qed_get_igu_free_sb(struct qed_hwfn *p_hwfn,
bool b_is_pf);
void qed_int_igu_init_pure_rt(struct qed_hwfn *p_hwfn,
struct qed_ptt *p_ptt,
bool b_set,
bool b_slowpath);
void qed_int_igu_init_rt(struct qed_hwfn *p_hwfn);
/**
* @brief qed_int_igu_read_cam - Reads the IGU CAM.
* This function needs to be called during hardware
* prepare. It reads the info from igu cam to know which
* status block is the default / base status block etc.
*
* @param p_hwfn
* @param p_ptt
*
* @return int
*/
int qed_int_igu_read_cam(struct qed_hwfn *p_hwfn,
struct qed_ptt *p_ptt);
typedef int (*qed_int_comp_cb_t)(struct qed_hwfn *p_hwfn,
void *cookie);
/**
* @brief qed_int_register_cb - Register callback func for
* slowhwfn statusblock.
*
* Every protocol that uses the slowhwfn status block
* should register a callback function that will be called
* once there is an update of the sp status block.
*
* @param p_hwfn
* @param comp_cb - function to be called when there is an
* interrupt on the sp sb
*
* @param cookie - passed to the callback function
* @param sb_idx - OUT parameter which gives the chosen index
* for this protocol.
* @param p_fw_cons - pointer to the actual address of the
* consumer for this protocol.
*
* @return int
*/
int qed_int_register_cb(struct qed_hwfn *p_hwfn,
qed_int_comp_cb_t comp_cb,
void *cookie,
u8 *sb_idx,
__le16 **p_fw_cons);
/**
* @brief qed_int_unregister_cb - Unregisters callback
* function from sp sb.
* Partner of qed_int_register_cb -> should be called
* when no longer required.
*
* @param p_hwfn
* @param pi
*
* @return int
*/
int qed_int_unregister_cb(struct qed_hwfn *p_hwfn,
u8 pi);
/**
* @brief qed_int_get_sp_sb_id - Get the slowhwfn sb id.
*
* @param p_hwfn
*
* @return u16
*/
u16 qed_int_get_sp_sb_id(struct qed_hwfn *p_hwfn);
/**
* @brief Status block cleanup. Should be called for each status
* block that will be used -> both PF / VF
*
* @param p_hwfn
* @param p_ptt
* @param igu_sb_id - igu status block id
* @param opaque - opaque fid of the sb owner.
* @param b_set - set(1) / clear(0)
*/
void qed_int_igu_init_pure_rt_single(struct qed_hwfn *p_hwfn,
struct qed_ptt *p_ptt,
u16 igu_sb_id,
u16 opaque,
bool b_set);
/**
* @brief qed_int_cau_conf - configure cau for a given status
* block
*
* @param p_hwfn
* @param ptt
* @param sb_phys
* @param igu_sb_id
* @param vf_number
* @param vf_valid
*/
void qed_int_cau_conf_sb(struct qed_hwfn *p_hwfn,
struct qed_ptt *p_ptt,
dma_addr_t sb_phys,
u16 igu_sb_id,
u16 vf_number,
u8 vf_valid);
/**
* @brief qed_int_alloc
*
* @param p_hwfn
* @param p_ptt
*
* @return int
*/
int qed_int_alloc(struct qed_hwfn *p_hwfn,
struct qed_ptt *p_ptt);
/**
* @brief qed_int_free
*
* @param p_hwfn
*/
void qed_int_free(struct qed_hwfn *p_hwfn);
/**
* @brief qed_int_setup
*
* @param p_hwfn
* @param p_ptt
*/
void qed_int_setup(struct qed_hwfn *p_hwfn,
struct qed_ptt *p_ptt);
/**
* @brief - Enable Interrupt & Attention for hw function
*
* @param p_hwfn
* @param p_ptt
* @param int_mode
*
* @return int
*/
int qed_int_igu_enable(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt,
enum qed_int_mode int_mode);
/**
* @brief - Initialize CAU status block entry
*
* @param p_hwfn
* @param p_sb_entry
* @param pf_id
* @param vf_number
* @param vf_valid
*/
void qed_init_cau_sb_entry(struct qed_hwfn *p_hwfn,
struct cau_sb_entry *p_sb_entry,
u8 pf_id,
u16 vf_number,
u8 vf_valid);
int qed_int_set_timer_res(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt,
u8 timer_res, u16 sb_id, bool tx);
#define QED_MAPPING_MEMORY_SIZE(dev) (NUM_OF_SBS(dev))
int qed_pglueb_rbc_attn_handler(struct qed_hwfn *p_hwfn,
struct qed_ptt *p_ptt);
#endif
