xref: /freebsd-11-stable/sys/contrib/ncsw/Peripherals/QM/qman_private.h

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/******************************************************************************
 @File          qman_private.h

 @Description   QM private header
*//***************************************************************************/
#ifndef __QMAN_PRIVATE_H
#define __QMAN_PRIVATE_H

#include "fsl_qman.h"


#define __ERR_MODULE__  MODULE_QM

#if defined(DEBUG) || !defined(DISABLE_ASSERTIONS)
/* Optionally compile-in assertion-checking */
#define QM_CHECKING
#endif /* defined(DEBUG) || ... */

/* TODO: NB, we currently assume that CORE_MemoryBarier() and lwsync() imply compiler barriers
 * and that dcbzl(), dcbfl(), and dcbi() won't fall victim to compiler or
 * execution reordering with respect to other code/instructions that manipulate
 * the same cacheline. */
#ifdef CORE_E500MC

#if defined(_DIAB_TOOL)
#define hwsync() \
do { \
__asm__ __volatile__ ("sync"); \
} while(0)

#define lwsync() \
do { \
__asm__ __volatile__ ("lwsync"); \
} while(0)

__asm__ __volatile__ void dcbf (volatile void * addr)
{
%reg addr
    dcbf r0, addr
}

__asm__ __volatile__ void dcbt_ro (volatile void * addr)
{
%reg addr
    dcbt r0, addr
}

__asm__ __volatile__ void dcbt_rw (volatile void * addr)
{
%reg addr
    dcbtst r0, addr
}

__asm__ __volatile__ void dcbzl (volatile void * addr)
{
%reg addr
    dcbzl r0, addr
}

#define dcbz_64(p) \
    do { \
        dcbzl(p); \
    } while (0)

#define dcbf_64(p) \
    do { \
        dcbf(p); \
    } while (0)

/* Commonly used combo */
#define dcbit_ro(p) \
    do { \
        dcbi(p); \
        dcbt_ro(p); \
    } while (0)

#else /* GNU C */
#define hwsync() \
    do { \
        __asm__ __volatile__ ("sync" : : : "memory"); \
    } while(0)

#define lwsync() \
    do { \
        __asm__ __volatile__ ("lwsync" : : : "memory"); \
    } while(0)

#define dcbf(addr)  \
    do { \
        __asm__ __volatile__ ("dcbf 0, %0" : : "r" (addr)); \
    } while(0)

#define dcbt_ro(addr)   \
    do { \
        __asm__ __volatile__ ("dcbt 0, %0" : : "r" (addr)); \
    } while(0)

#define dcbt_rw(addr)   \
    do { \
        __asm__ __volatile__ ("dcbtst 0, %0" : : "r" (addr)); \
    } while(0)

#define dcbzl(p) \
    do { \
        __asm__ __volatile__ ("dcbzl 0,%0" : : "r" (p)); \
    } while(0)

#define dcbz_64(p) \
    do { \
        dcbzl(p); \
    } while (0)

#define dcbf_64(p) \
    do { \
        dcbf(p); \
    } while (0)

/* Commonly used combo */
#define dcbit_ro(p) \
    do { \
        dcbi(p); \
        dcbt_ro(p); \
    } while (0)

#endif /* _DIAB_TOOL */

#else
#define hwsync      CORE_MemoryBarrier
#define lwsync      hwsync

#define dcbf(p) \
    do { \
        __asm__ __volatile__ ("dcbf 0,%0" : : "r" (p)); \
    } while(0)
#define dcbt_ro(p) \
    do { \
        __asm__ __volatile__ ("dcbt 0,%0" : : "r" (p)); \
        lwsync(); \
    } while(0)
#define dcbt_rw(p) \
    do { \
        __asm__ __volatile__ ("dcbtst 0,%0" : : "r" (p)); \
    } while(0)
#define dcbz(p) \
    do { \
        __asm__ __volatile__ ("dcbz 0,%0" : : "r" (p)); \
    } while (0)
#define dcbz_64(p) \
    do { \
        dcbz((uint32_t)p + 32); \
        dcbz(p);    \
    } while (0)
#define dcbf_64(p) \
    do { \
        dcbf((uint32_t)p + 32); \
        dcbf(p); \
    } while (0)
/* Commonly used combo */
#define dcbit_ro(p) \
    do { \
        dcbi(p); \
        dcbi((uint32_t)p + 32); \
        dcbt_ro(p); \
        dcbt_ro((uint32_t)p + 32); \
    } while (0)

#endif /* CORE_E500MC */

#define dcbi(p) dcbf(p)

struct qm_addr {
    void  *addr_ce;    /* cache-enabled */
    void  *addr_ci;    /* cache-inhibited */
};

/* EQCR state */
struct qm_eqcr {
    struct qm_eqcr_entry *ring, *cursor;
    uint8_t ci, available, ithresh, vbit;

#ifdef QM_CHECKING
    uint32_t busy;
    e_QmPortalProduceMode       pmode;
    e_QmPortalEqcrConsumeMode   cmode;
#endif /* QM_CHECKING */
};

/* DQRR state */
struct qm_dqrr {
    struct qm_dqrr_entry *ring, *cursor;
    uint8_t pi, ci, fill, ithresh, vbit, flags;

#ifdef QM_CHECKING
    e_QmPortalDequeueMode       dmode;
    e_QmPortalProduceMode       pmode;
    e_QmPortalDqrrConsumeMode   cmode;
#endif /* QM_CHECKING */
};
#define QM_DQRR_FLAG_RE 0x01 /* Stash ring entries */
#define QM_DQRR_FLAG_SE 0x02 /* Stash data */

/* MR state */
struct qm_mr {
    struct qm_mr_entry *ring, *cursor;
    uint8_t pi, ci, fill, ithresh, vbit;

#ifdef QM_CHECKING
    e_QmPortalProduceMode       pmode;
    e_QmPortalMrConsumeMode     cmode;
#endif /* QM_CHECKING */
};

/* MC state */
struct qm_mc {
    struct qm_mc_command *cr;
    struct qm_mc_result *rr;
    uint8_t rridx, vbit;
#ifdef QM_CHECKING
    enum {
        /* Can be _mc_start()ed */
        mc_idle,
        /* Can be _mc_commit()ed or _mc_abort()ed */
        mc_user,
        /* Can only be _mc_retry()ed */
        mc_hw
    } state;
#endif /* QM_CHECKING */
};

/********************/
/* Portal structure */
/********************/

struct qm_portal {
    /* In the non-QM_CHECKING case, everything up to and
     * including 'mc' fits in a cacheline (yay!). The 'config' part is setup-only, so isn't a
     * cause for a concern. In other words, don't rearrange this structure
     * on a whim, there be dragons ... */
    struct qm_addr addr;
    struct qm_eqcr eqcr;
    struct qm_dqrr dqrr;
    struct qm_mr mr;
    struct qm_mc mc;
    struct qm_portal_config config;
    t_Handle bind_lock;
    /* Logical index (not cell-index) */
    int index;
};

#endif /* __QMAN_PRIVATE_H */