diff options
Diffstat (limited to 'linux/drivers/soc/fsl/qbman/qman.h')
| -rw-r--r-- | linux/drivers/soc/fsl/qbman/qman.h | 1133 |
1 files changed, 1133 insertions, 0 deletions
diff --git a/linux/drivers/soc/fsl/qbman/qman.h b/linux/drivers/soc/fsl/qbman/qman.h new file mode 100644 index 00000000..331db7c7 --- /dev/null +++ b/linux/drivers/soc/fsl/qbman/qman.h @@ -0,0 +1,1133 @@ +/* Copyright 2008 - 2015 Freescale Semiconductor, Inc. + * + * 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. + * * Neither the name of Freescale Semiconductor nor the + * names of its contributors may be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * ALTERNATIVELY, this software may be distributed under the terms of the + * GNU General Public License ("GPL") as published by the Free Software + * Foundation, either version 2 of that License or (at your option) any + * later version. + * + * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``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 Freescale Semiconductor 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. + */ + +#include "qman_priv.h" + +/* Portal register assists */ + +/* Cache-inhibited register offsets */ +#define QM_REG_EQCR_PI_CINH 0x0000 +#define QM_REG_EQCR_CI_CINH 0x0004 +#define QM_REG_EQCR_ITR 0x0008 +#define QM_REG_DQRR_PI_CINH 0x0040 +#define QM_REG_DQRR_CI_CINH 0x0044 +#define QM_REG_DQRR_ITR 0x0048 +#define QM_REG_DQRR_DCAP 0x0050 +#define QM_REG_DQRR_SDQCR 0x0054 +#define QM_REG_DQRR_VDQCR 0x0058 +#define QM_REG_DQRR_PDQCR 0x005c +#define QM_REG_MR_PI_CINH 0x0080 +#define QM_REG_MR_CI_CINH 0x0084 +#define QM_REG_MR_ITR 0x0088 +#define QM_REG_CFG 0x0100 +#define QM_REG_ISR 0x0e00 +#define QM_REG_IIR 0x0e0c +#define QM_REG_ITPR 0x0e14 + +/* Cache-enabled register offsets */ +#define QM_CL_EQCR 0x0000 +#define QM_CL_DQRR 0x1000 +#define QM_CL_MR 0x2000 +#define QM_CL_EQCR_PI_CENA 0x3000 +#define QM_CL_EQCR_CI_CENA 0x3100 +#define QM_CL_DQRR_PI_CENA 0x3200 +#define QM_CL_DQRR_CI_CENA 0x3300 +#define QM_CL_MR_PI_CENA 0x3400 +#define QM_CL_MR_CI_CENA 0x3500 +#define QM_CL_CR 0x3800 +#define QM_CL_RR0 0x3900 +#define QM_CL_RR1 0x3940 + +/* BTW, the drivers (and h/w programming model) already obtain the required + * synchronisation for portal accesses via lwsync(), hwsync(), and + * data-dependencies. Use of barrier()s or other order-preserving primitives + * simply degrade performance. Hence the use of the __raw_*() interfaces, which + * simply ensure that the compiler treats the portal registers as volatile (ie. + * non-coherent). */ + +/* Cache-inhibited register access. */ +#define __qm_in(qm, o) __raw_readl((qm)->addr_ci + (o)) +#define __qm_out(qm, o, val) __raw_writel((val), (qm)->addr_ci + (o)) +#define qm_in(reg) __qm_in(&portal->addr, QM_REG_##reg) +#define qm_out(reg, val) __qm_out(&portal->addr, QM_REG_##reg, val) + +/* Cache-enabled (index) register access */ +#define __qm_cl_touch_ro(qm, o) dcbt_ro((qm)->addr_ce + (o)) +#define __qm_cl_touch_rw(qm, o) dcbt_rw((qm)->addr_ce + (o)) +#define __qm_cl_in(qm, o) __raw_readl((qm)->addr_ce + (o)) +#define __qm_cl_out(qm, o, val) \ + do { \ + u32 *__tmpclout = (qm)->addr_ce + (o); \ + __raw_writel((val), __tmpclout); \ + dcbf(__tmpclout); \ + } while (0) +#define __qm_cl_invalidate(qm, o) dcbi((qm)->addr_ce + (o)) +#define qm_cl_touch_ro(reg) __qm_cl_touch_ro(&portal->addr, QM_CL_##reg##_CENA) +#define qm_cl_touch_rw(reg) __qm_cl_touch_rw(&portal->addr, QM_CL_##reg##_CENA) +#define qm_cl_in(reg) __qm_cl_in(&portal->addr, QM_CL_##reg##_CENA) +#define qm_cl_out(reg, val) __qm_cl_out(&portal->addr, QM_CL_##reg##_CENA, val) +#define qm_cl_invalidate(reg)\ + __qm_cl_invalidate(&portal->addr, QM_CL_##reg##_CENA) + +/* Cache-enabled ring access */ +#define qm_cl(base, idx) ((void *)base + ((idx) << 6)) + +/* Cyclic helper for rings. FIXME: once we are able to do fine-grain perf + * analysis, look at using the "extra" bit in the ring index registers to avoid + * cyclic issues. */ +static inline u8 qm_cyc_diff(u8 ringsize, u8 first, u8 last) +{ + /* 'first' is included, 'last' is excluded */ + if (first <= last) + return last - first; + return ringsize + last - first; +} + +/* Portal modes. + * Enum types; + * pmode == production mode + * cmode == consumption mode, + * dmode == h/w dequeue mode. + * Enum values use 3 letter codes. First letter matches the portal mode, + * remaining two letters indicate; + * ci == cache-inhibited portal register + * ce == cache-enabled portal register + * vb == in-band valid-bit (cache-enabled) + * dc == DCA (Discrete Consumption Acknowledgment), DQRR-only + * As for "enum qm_dqrr_dmode", it should be self-explanatory. + */ +enum qm_eqcr_pmode { /* matches QCSP_CFG::EPM */ + qm_eqcr_pci = 0, /* PI index, cache-inhibited */ + qm_eqcr_pce = 1, /* PI index, cache-enabled */ + qm_eqcr_pvb = 2 /* valid-bit */ +}; +enum qm_dqrr_dmode { /* matches QCSP_CFG::DP */ + qm_dqrr_dpush = 0, /* SDQCR + VDQCR */ + qm_dqrr_dpull = 1 /* PDQCR */ +}; +enum qm_dqrr_pmode { /* s/w-only */ + qm_dqrr_pci, /* reads DQRR_PI_CINH */ + qm_dqrr_pce, /* reads DQRR_PI_CENA */ + qm_dqrr_pvb /* reads valid-bit */ +}; +enum qm_dqrr_cmode { /* matches QCSP_CFG::DCM */ + qm_dqrr_cci = 0, /* CI index, cache-inhibited */ + qm_dqrr_cce = 1, /* CI index, cache-enabled */ + qm_dqrr_cdc = 2 /* Discrete Consumption Acknowledgment */ +}; +enum qm_mr_pmode { /* s/w-only */ + qm_mr_pci, /* reads MR_PI_CINH */ + qm_mr_pce, /* reads MR_PI_CENA */ + qm_mr_pvb /* reads valid-bit */ +}; +enum qm_mr_cmode { /* matches QCSP_CFG::MM */ + qm_mr_cci = 0, /* CI index, cache-inhibited */ + qm_mr_cce = 1 /* CI index, cache-enabled */ +}; + +/* --- Portal structures --- */ + +#define QM_EQCR_SIZE 8 +#define QM_DQRR_SIZE 16 +#define QM_MR_SIZE 8 + +struct qm_eqcr { + struct qm_eqcr_entry *ring, *cursor; + u8 ci, available, ithresh, vbit; +#ifdef CONFIG_FSL_DPA_CHECKING + u32 busy; + enum qm_eqcr_pmode pmode; +#endif +}; + +struct qm_dqrr { + const struct qm_dqrr_entry *ring, *cursor; + u8 pi, ci, fill, ithresh, vbit; +#ifdef CONFIG_FSL_DPA_CHECKING + enum qm_dqrr_dmode dmode; + enum qm_dqrr_pmode pmode; + enum qm_dqrr_cmode cmode; +#endif +}; + +struct qm_mr { + const struct qm_mr_entry *ring, *cursor; + u8 pi, ci, fill, ithresh, vbit; +#ifdef CONFIG_FSL_DPA_CHECKING + enum qm_mr_pmode pmode; + enum qm_mr_cmode cmode; +#endif +}; + +struct qm_mc { + struct qm_mc_command *cr; + struct qm_mc_result *rr; + u8 rridx, vbit; +#ifdef CONFIG_FSL_DPA_CHECKING + enum { + /* Can be _mc_start()ed */ + qman_mc_idle, + /* Can be _mc_commit()ed or _mc_abort()ed */ + qman_mc_user, + /* Can only be _mc_retry()ed */ + qman_mc_hw + } state; +#endif +}; + +#define QM_PORTAL_ALIGNMENT ____cacheline_aligned + +struct qm_addr { + void __iomem *addr_ce; /* cache-enabled */ + void __iomem *addr_ci; /* cache-inhibited */ +}; + +struct qm_portal { + /* In the non-CONFIG_FSL_DPA_CHECKING case, the following stuff up to + * and including 'mc' fits within 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; +} QM_PORTAL_ALIGNMENT; + +/* --- EQCR API --- */ + +/* Bit-wise logic to wrap a ring pointer by clearing the "carry bit" */ +#define EQCR_CARRYCLEAR(p) \ + (void *)((unsigned long)(p) & (~(unsigned long)(QM_EQCR_SIZE << 6))) + +/* Bit-wise logic to convert a ring pointer to a ring index */ +static inline u8 EQCR_PTR2IDX(struct qm_eqcr_entry *e) +{ + return ((uintptr_t)e >> 6) & (QM_EQCR_SIZE - 1); +} + +/* Increment the 'cursor' ring pointer, taking 'vbit' into account */ +static inline void EQCR_INC(struct qm_eqcr *eqcr) +{ + /* NB: this is odd-looking, but experiments show that it generates fast + * code with essentially no branching overheads. We increment to the + * next EQCR pointer and handle overflow and 'vbit'. */ + struct qm_eqcr_entry *partial = eqcr->cursor + 1; + + eqcr->cursor = EQCR_CARRYCLEAR(partial); + if (partial != eqcr->cursor) + eqcr->vbit ^= QM_EQCR_VERB_VBIT; +} + +static inline int qm_eqcr_init(struct qm_portal *portal, + enum qm_eqcr_pmode pmode, + unsigned int eq_stash_thresh, + int eq_stash_prio) +{ + /* This use of 'register', as well as all other occurrences, is because + * it has been observed to generate much faster code with gcc than is + * otherwise the case. */ + register struct qm_eqcr *eqcr = &portal->eqcr; + u32 cfg; + u8 pi; + + eqcr->ring = portal->addr.addr_ce + QM_CL_EQCR; + eqcr->ci = qm_in(EQCR_CI_CINH) & (QM_EQCR_SIZE - 1); + qm_cl_invalidate(EQCR_CI); + pi = qm_in(EQCR_PI_CINH) & (QM_EQCR_SIZE - 1); + eqcr->cursor = eqcr->ring + pi; + eqcr->vbit = (qm_in(EQCR_PI_CINH) & QM_EQCR_SIZE) ? + QM_EQCR_VERB_VBIT : 0; + eqcr->available = QM_EQCR_SIZE - 1 - + qm_cyc_diff(QM_EQCR_SIZE, eqcr->ci, pi); + eqcr->ithresh = qm_in(EQCR_ITR); +#ifdef CONFIG_FSL_DPA_CHECKING + eqcr->busy = 0; + eqcr->pmode = pmode; +#endif + cfg = (qm_in(CFG) & 0x00ffffff) | + (eq_stash_thresh << 28) | /* QCSP_CFG: EST */ + (eq_stash_prio << 26) | /* QCSP_CFG: EP */ + ((pmode & 0x3) << 24); /* QCSP_CFG::EPM */ + qm_out(CFG, cfg); + return 0; +} + +static inline unsigned int qm_eqcr_get_ci_stashing(struct qm_portal *portal) +{ + return (qm_in(CFG) >> 28) & 0x7; +} + +static inline void qm_eqcr_finish(struct qm_portal *portal) +{ + register struct qm_eqcr *eqcr = &portal->eqcr; + u8 pi = qm_in(EQCR_PI_CINH) & (QM_EQCR_SIZE - 1); + u8 ci = qm_in(EQCR_CI_CINH) & (QM_EQCR_SIZE - 1); + + DPA_ASSERT(!eqcr->busy); + if (pi != EQCR_PTR2IDX(eqcr->cursor)) + pr_crit("losing uncommited EQCR entries\n"); + if (ci != eqcr->ci) + pr_crit("missing existing EQCR completions\n"); + if (eqcr->ci != EQCR_PTR2IDX(eqcr->cursor)) + pr_crit("EQCR destroyed unquiesced\n"); +} + +static inline struct qm_eqcr_entry *qm_eqcr_start_no_stash(struct qm_portal + *portal) +{ + register struct qm_eqcr *eqcr = &portal->eqcr; + + DPA_ASSERT(!eqcr->busy); + if (!eqcr->available) + return NULL; + + +#ifdef CONFIG_FSL_DPA_CHECKING + eqcr->busy = 1; +#endif + dcbz_64(eqcr->cursor); + return eqcr->cursor; +} + +static inline struct qm_eqcr_entry *qm_eqcr_start_stash(struct qm_portal + *portal) +{ + register struct qm_eqcr *eqcr = &portal->eqcr; + u8 diff, old_ci; + + DPA_ASSERT(!eqcr->busy); + if (!eqcr->available) { + old_ci = eqcr->ci; + eqcr->ci = qm_cl_in(EQCR_CI) & (QM_EQCR_SIZE - 1); + diff = qm_cyc_diff(QM_EQCR_SIZE, old_ci, eqcr->ci); + eqcr->available += diff; + if (!diff) + return NULL; + } +#ifdef CONFIG_FSL_DPA_CHECKING + eqcr->busy = 1; +#endif + dcbz_64(eqcr->cursor); + return eqcr->cursor; +} + +static inline void qm_eqcr_abort(struct qm_portal *portal) +{ + __maybe_unused register struct qm_eqcr *eqcr = &portal->eqcr; + + DPA_ASSERT(eqcr->busy); +#ifdef CONFIG_FSL_DPA_CHECKING + eqcr->busy = 0; +#endif +} + +static inline struct qm_eqcr_entry *qm_eqcr_pend_and_next( + struct qm_portal *portal, u8 myverb) +{ + register struct qm_eqcr *eqcr = &portal->eqcr; + + DPA_ASSERT(eqcr->busy); + DPA_ASSERT(eqcr->pmode != qm_eqcr_pvb); + if (eqcr->available == 1) + return NULL; + eqcr->cursor->__dont_write_directly__verb = myverb | eqcr->vbit; + dcbf(eqcr->cursor); + EQCR_INC(eqcr); + eqcr->available--; + dcbz_64(eqcr->cursor); + return eqcr->cursor; +} + +#define EQCR_COMMIT_CHECKS(eqcr) \ +do { \ + DPA_ASSERT(eqcr->busy); \ + DPA_ASSERT(eqcr->cursor->orp == (eqcr->cursor->orp & 0x00ffffff)); \ + DPA_ASSERT(eqcr->cursor->fqid == (eqcr->cursor->fqid & 0x00ffffff)); \ +} while (0) + +static inline void qm_eqcr_pci_commit(struct qm_portal *portal, u8 myverb) +{ + register struct qm_eqcr *eqcr = &portal->eqcr; + + EQCR_COMMIT_CHECKS(eqcr); + DPA_ASSERT(eqcr->pmode == qm_eqcr_pci); + eqcr->cursor->__dont_write_directly__verb = myverb | eqcr->vbit; + EQCR_INC(eqcr); + eqcr->available--; + dcbf(eqcr->cursor); + hwsync(); + qm_out(EQCR_PI_CINH, EQCR_PTR2IDX(eqcr->cursor)); +#ifdef CONFIG_FSL_DPA_CHECKING + eqcr->busy = 0; +#endif +} + +static inline void qm_eqcr_pce_prefetch(struct qm_portal *portal) +{ + __maybe_unused register struct qm_eqcr *eqcr = &portal->eqcr; + + DPA_ASSERT(eqcr->pmode == qm_eqcr_pce); + qm_cl_invalidate(EQCR_PI); + qm_cl_touch_rw(EQCR_PI); +} + +static inline void qm_eqcr_pce_commit(struct qm_portal *portal, u8 myverb) +{ + register struct qm_eqcr *eqcr = &portal->eqcr; + + EQCR_COMMIT_CHECKS(eqcr); + DPA_ASSERT(eqcr->pmode == qm_eqcr_pce); + eqcr->cursor->__dont_write_directly__verb = myverb | eqcr->vbit; + EQCR_INC(eqcr); + eqcr->available--; + dcbf(eqcr->cursor); + lwsync(); + qm_cl_out(EQCR_PI, EQCR_PTR2IDX(eqcr->cursor)); +#ifdef CONFIG_FSL_DPA_CHECKING + eqcr->busy = 0; +#endif +} + +static inline void qm_eqcr_pvb_commit(struct qm_portal *portal, u8 myverb) +{ + register struct qm_eqcr *eqcr = &portal->eqcr; + struct qm_eqcr_entry *eqcursor; + + EQCR_COMMIT_CHECKS(eqcr); + DPA_ASSERT(eqcr->pmode == qm_eqcr_pvb); + lwsync(); + eqcursor = eqcr->cursor; + eqcursor->__dont_write_directly__verb = myverb | eqcr->vbit; + dcbf(eqcursor); + EQCR_INC(eqcr); + eqcr->available--; +#ifdef CONFIG_FSL_DPA_CHECKING + eqcr->busy = 0; +#endif +} + +static inline u8 qm_eqcr_cci_update(struct qm_portal *portal) +{ + register struct qm_eqcr *eqcr = &portal->eqcr; + u8 diff, old_ci = eqcr->ci; + + eqcr->ci = qm_in(EQCR_CI_CINH) & (QM_EQCR_SIZE - 1); + diff = qm_cyc_diff(QM_EQCR_SIZE, old_ci, eqcr->ci); + eqcr->available += diff; + return diff; +} + +static inline void qm_eqcr_cce_prefetch(struct qm_portal *portal) +{ + __maybe_unused register struct qm_eqcr *eqcr = &portal->eqcr; + + qm_cl_touch_ro(EQCR_CI); +} + +static inline u8 qm_eqcr_cce_update(struct qm_portal *portal) +{ + register struct qm_eqcr *eqcr = &portal->eqcr; + u8 diff, old_ci = eqcr->ci; + + eqcr->ci = qm_cl_in(EQCR_CI) & (QM_EQCR_SIZE - 1); + qm_cl_invalidate(EQCR_CI); + diff = qm_cyc_diff(QM_EQCR_SIZE, old_ci, eqcr->ci); + eqcr->available += diff; + return diff; +} + +static inline u8 qm_eqcr_get_ithresh(struct qm_portal *portal) +{ + register struct qm_eqcr *eqcr = &portal->eqcr; + + return eqcr->ithresh; +} + +static inline void qm_eqcr_set_ithresh(struct qm_portal *portal, u8 ithresh) +{ + register struct qm_eqcr *eqcr = &portal->eqcr; + + eqcr->ithresh = ithresh; + qm_out(EQCR_ITR, ithresh); +} + +static inline u8 qm_eqcr_get_avail(struct qm_portal *portal) +{ + register struct qm_eqcr *eqcr = &portal->eqcr; + + return eqcr->available; +} + +static inline u8 qm_eqcr_get_fill(struct qm_portal *portal) +{ + register struct qm_eqcr *eqcr = &portal->eqcr; + + return QM_EQCR_SIZE - 1 - eqcr->available; +} + +/* --- DQRR API --- */ + +/* FIXME: many possible improvements; + * - look at changing the API to use pointer rather than index parameters now + * that 'cursor' is a pointer, + * - consider moving other parameters to pointer if it could help (ci) + */ + +#define DQRR_CARRYCLEAR(p) \ + (void *)((unsigned long)(p) & (~(unsigned long)(QM_DQRR_SIZE << 6))) + +static inline u8 DQRR_PTR2IDX(const struct qm_dqrr_entry *e) +{ + return ((uintptr_t)e >> 6) & (QM_DQRR_SIZE - 1); +} + +static inline const struct qm_dqrr_entry *DQRR_INC( + const struct qm_dqrr_entry *e) +{ + return DQRR_CARRYCLEAR(e + 1); +} + +static inline void qm_dqrr_set_maxfill(struct qm_portal *portal, u8 mf) +{ + qm_out(CFG, (qm_in(CFG) & 0xff0fffff) | + ((mf & (QM_DQRR_SIZE - 1)) << 20)); +} + +static inline int qm_dqrr_init(struct qm_portal *portal, + const struct qm_portal_config *config, + enum qm_dqrr_dmode dmode, + __maybe_unused enum qm_dqrr_pmode pmode, + enum qm_dqrr_cmode cmode, u8 max_fill) +{ + register struct qm_dqrr *dqrr = &portal->dqrr; + u32 cfg; + + /* Make sure the DQRR will be idle when we enable */ + qm_out(DQRR_SDQCR, 0); + qm_out(DQRR_VDQCR, 0); + qm_out(DQRR_PDQCR, 0); + dqrr->ring = portal->addr.addr_ce + QM_CL_DQRR; + dqrr->pi = qm_in(DQRR_PI_CINH) & (QM_DQRR_SIZE - 1); + dqrr->ci = qm_in(DQRR_CI_CINH) & (QM_DQRR_SIZE - 1); + dqrr->cursor = dqrr->ring + dqrr->ci; + dqrr->fill = qm_cyc_diff(QM_DQRR_SIZE, dqrr->ci, dqrr->pi); + dqrr->vbit = (qm_in(DQRR_PI_CINH) & QM_DQRR_SIZE) ? + QM_DQRR_VERB_VBIT : 0; + dqrr->ithresh = qm_in(DQRR_ITR); +#ifdef CONFIG_FSL_DPA_CHECKING + dqrr->dmode = dmode; + dqrr->pmode = pmode; + dqrr->cmode = cmode; +#endif + /* Invalidate every ring entry before beginning */ + for (cfg = 0; cfg < QM_DQRR_SIZE; cfg++) + dcbi(qm_cl(dqrr->ring, cfg)); + cfg = (qm_in(CFG) & 0xff000f00) | + ((max_fill & (QM_DQRR_SIZE - 1)) << 20) | /* DQRR_MF */ + ((dmode & 1) << 18) | /* DP */ + ((cmode & 3) << 16) | /* DCM */ +#ifndef __rtems__ + 0xa0 | /* RE+SE */ +#endif /* __rtems__ */ + (0 ? 0x40 : 0) | /* Ignore RP */ + (0 ? 0x10 : 0); /* Ignore SP */ + qm_out(CFG, cfg); + qm_dqrr_set_maxfill(portal, max_fill); + return 0; +} + +static inline void qm_dqrr_finish(struct qm_portal *portal) +{ + __maybe_unused register struct qm_dqrr *dqrr = &portal->dqrr; +#ifdef CONFIG_FSL_DPA_CHECKING + if ((dqrr->cmode != qm_dqrr_cdc) && + (dqrr->ci != DQRR_PTR2IDX(dqrr->cursor))) + pr_crit("Ignoring completed DQRR entries\n"); +#endif +} + +static inline const struct qm_dqrr_entry *qm_dqrr_current( + struct qm_portal *portal) +{ + register struct qm_dqrr *dqrr = &portal->dqrr; + + if (!dqrr->fill) + return NULL; + return dqrr->cursor; +} + +static inline u8 qm_dqrr_cursor(struct qm_portal *portal) +{ + register struct qm_dqrr *dqrr = &portal->dqrr; + + return DQRR_PTR2IDX(dqrr->cursor); +} + +static inline u8 qm_dqrr_next(struct qm_portal *portal) +{ + register struct qm_dqrr *dqrr = &portal->dqrr; + + DPA_ASSERT(dqrr->fill); + dqrr->cursor = DQRR_INC(dqrr->cursor); + return --dqrr->fill; +} + +static inline u8 qm_dqrr_pci_update(struct qm_portal *portal) +{ + register struct qm_dqrr *dqrr = &portal->dqrr; + u8 diff, old_pi = dqrr->pi; + + DPA_ASSERT(dqrr->pmode == qm_dqrr_pci); + dqrr->pi = qm_in(DQRR_PI_CINH) & (QM_DQRR_SIZE - 1); + diff = qm_cyc_diff(QM_DQRR_SIZE, old_pi, dqrr->pi); + dqrr->fill += diff; + return diff; +} + +static inline void qm_dqrr_pce_prefetch(struct qm_portal *portal) +{ + __maybe_unused register struct qm_dqrr *dqrr = &portal->dqrr; + + DPA_ASSERT(dqrr->pmode == qm_dqrr_pce); + qm_cl_invalidate(DQRR_PI); + qm_cl_touch_ro(DQRR_PI); +} + +static inline u8 qm_dqrr_pce_update(struct qm_portal *portal) +{ + register struct qm_dqrr *dqrr = &portal->dqrr; + u8 diff, old_pi = dqrr->pi; + + DPA_ASSERT(dqrr->pmode == qm_dqrr_pce); + dqrr->pi = qm_cl_in(DQRR_PI) & (QM_DQRR_SIZE - 1); + diff = qm_cyc_diff(QM_DQRR_SIZE, old_pi, dqrr->pi); + dqrr->fill += diff; + return diff; +} + +static inline void qm_dqrr_pvb_update(struct qm_portal *portal) +{ + register struct qm_dqrr *dqrr = &portal->dqrr; + const struct qm_dqrr_entry *res = qm_cl(dqrr->ring, dqrr->pi); + + DPA_ASSERT(dqrr->pmode == qm_dqrr_pvb); + /* when accessing 'verb', use __raw_readb() to ensure that compiler + * inlining doesn't try to optimise out "excess reads". */ +#ifdef __rtems__ + dcbi(res); +#endif /* __rtems__ */ + if ((__raw_readb(&res->verb) & QM_DQRR_VERB_VBIT) == dqrr->vbit) { + dqrr->pi = (dqrr->pi + 1) & (QM_DQRR_SIZE - 1); + if (!dqrr->pi) + dqrr->vbit ^= QM_DQRR_VERB_VBIT; + dqrr->fill++; + } +} + +static inline void qm_dqrr_cci_consume(struct qm_portal *portal, u8 num) +{ + register struct qm_dqrr *dqrr = &portal->dqrr; + + DPA_ASSERT(dqrr->cmode == qm_dqrr_cci); + dqrr->ci = (dqrr->ci + num) & (QM_DQRR_SIZE - 1); + qm_out(DQRR_CI_CINH, dqrr->ci); +} + +static inline void qm_dqrr_cci_consume_to_current(struct qm_portal *portal) +{ + register struct qm_dqrr *dqrr = &portal->dqrr; + + DPA_ASSERT(dqrr->cmode == qm_dqrr_cci); + dqrr->ci = DQRR_PTR2IDX(dqrr->cursor); + qm_out(DQRR_CI_CINH, dqrr->ci); +} + +static inline void qm_dqrr_cce_prefetch(struct qm_portal *portal) +{ + __maybe_unused register struct qm_dqrr *dqrr = &portal->dqrr; + + DPA_ASSERT(dqrr->cmode == qm_dqrr_cce); + qm_cl_invalidate(DQRR_CI); + qm_cl_touch_rw(DQRR_CI); +} + +static inline void qm_dqrr_cce_consume(struct qm_portal *portal, u8 num) +{ + register struct qm_dqrr *dqrr = &portal->dqrr; + + DPA_ASSERT(dqrr->cmode == qm_dqrr_cce); + dqrr->ci = (dqrr->ci + num) & (QM_DQRR_SIZE - 1); + qm_cl_out(DQRR_CI, dqrr->ci); +} + +static inline void qm_dqrr_cce_consume_to_current(struct qm_portal *portal) +{ + register struct qm_dqrr *dqrr = &portal->dqrr; + + DPA_ASSERT(dqrr->cmode == qm_dqrr_cce); + dqrr->ci = DQRR_PTR2IDX(dqrr->cursor); + qm_cl_out(DQRR_CI, dqrr->ci); +} + +static inline void qm_dqrr_cdc_consume_1(struct qm_portal *portal, u8 idx, + int park) +{ + __maybe_unused register struct qm_dqrr *dqrr = &portal->dqrr; + + DPA_ASSERT(dqrr->cmode == qm_dqrr_cdc); + DPA_ASSERT(idx < QM_DQRR_SIZE); + qm_out(DQRR_DCAP, (0 << 8) | /* S */ + ((park ? 1 : 0) << 6) | /* PK */ + idx); /* DCAP_CI */ +} + +static inline void qm_dqrr_cdc_consume_1ptr(struct qm_portal *portal, + const struct qm_dqrr_entry *dq, + int park) +{ + __maybe_unused register struct qm_dqrr *dqrr = &portal->dqrr; + u8 idx = DQRR_PTR2IDX(dq); + + DPA_ASSERT(dqrr->cmode == qm_dqrr_cdc); + DPA_ASSERT((dqrr->ring + idx) == dq); + DPA_ASSERT(idx < QM_DQRR_SIZE); + qm_out(DQRR_DCAP, (0 << 8) | /* DQRR_DCAP::S */ + ((park ? 1 : 0) << 6) | /* DQRR_DCAP::PK */ + idx); /* DQRR_DCAP::DCAP_CI */ +} + +static inline void qm_dqrr_cdc_consume_n(struct qm_portal *portal, u16 bitmask) +{ + __maybe_unused register struct qm_dqrr *dqrr = &portal->dqrr; + + DPA_ASSERT(dqrr->cmode == qm_dqrr_cdc); + qm_out(DQRR_DCAP, (1 << 8) | /* DQRR_DCAP::S */ + ((u32)bitmask << 16)); /* DQRR_DCAP::DCAP_CI */ +} + +static inline u8 qm_dqrr_cdc_cci(struct qm_portal *portal) +{ + __maybe_unused register struct qm_dqrr *dqrr = &portal->dqrr; + + DPA_ASSERT(dqrr->cmode == qm_dqrr_cdc); + return qm_in(DQRR_CI_CINH) & (QM_DQRR_SIZE - 1); +} + +static inline void qm_dqrr_cdc_cce_prefetch(struct qm_portal *portal) +{ + __maybe_unused register struct qm_dqrr *dqrr = &portal->dqrr; + + DPA_ASSERT(dqrr->cmode == qm_dqrr_cdc); + qm_cl_invalidate(DQRR_CI); + qm_cl_touch_ro(DQRR_CI); +} + +static inline u8 qm_dqrr_cdc_cce(struct qm_portal *portal) +{ + __maybe_unused register struct qm_dqrr *dqrr = &portal->dqrr; + + DPA_ASSERT(dqrr->cmode == qm_dqrr_cdc); + return qm_cl_in(DQRR_CI) & (QM_DQRR_SIZE - 1); +} + +static inline u8 qm_dqrr_get_ci(struct qm_portal *portal) +{ + register struct qm_dqrr *dqrr = &portal->dqrr; + + DPA_ASSERT(dqrr->cmode != qm_dqrr_cdc); + return dqrr->ci; +} + +static inline void qm_dqrr_park(struct qm_portal *portal, u8 idx) +{ + __maybe_unused register struct qm_dqrr *dqrr = &portal->dqrr; + + DPA_ASSERT(dqrr->cmode != qm_dqrr_cdc); + qm_out(DQRR_DCAP, (0 << 8) | /* S */ + (1 << 6) | /* PK */ + (idx & (QM_DQRR_SIZE - 1))); /* DCAP_CI */ +} + +static inline void qm_dqrr_park_current(struct qm_portal *portal) +{ + register struct qm_dqrr *dqrr = &portal->dqrr; + + DPA_ASSERT(dqrr->cmode != qm_dqrr_cdc); + qm_out(DQRR_DCAP, (0 << 8) | /* S */ + (1 << 6) | /* PK */ + DQRR_PTR2IDX(dqrr->cursor)); /* DCAP_CI */ +} + +static inline void qm_dqrr_sdqcr_set(struct qm_portal *portal, u32 sdqcr) +{ + qm_out(DQRR_SDQCR, sdqcr); +} + +static inline u32 qm_dqrr_sdqcr_get(struct qm_portal *portal) +{ + return qm_in(DQRR_SDQCR); +} + +static inline void qm_dqrr_vdqcr_set(struct qm_portal *portal, u32 vdqcr) +{ + qm_out(DQRR_VDQCR, vdqcr); +} + +static inline u32 qm_dqrr_vdqcr_get(struct qm_portal *portal) +{ + return qm_in(DQRR_VDQCR); +} + +static inline void qm_dqrr_pdqcr_set(struct qm_portal *portal, u32 pdqcr) +{ + qm_out(DQRR_PDQCR, pdqcr); +} + +static inline u32 qm_dqrr_pdqcr_get(struct qm_portal *portal) +{ + return qm_in(DQRR_PDQCR); +} + +static inline u8 qm_dqrr_get_ithresh(struct qm_portal *portal) +{ + register struct qm_dqrr *dqrr = &portal->dqrr; + + return dqrr->ithresh; +} + +static inline void qm_dqrr_set_ithresh(struct qm_portal *portal, u8 ithresh) +{ + qm_out(DQRR_ITR, ithresh); +} + +static inline u8 qm_dqrr_get_maxfill(struct qm_portal *portal) +{ + return (qm_in(CFG) & 0x00f00000) >> 20; +} + +/* --- MR API --- */ + +#define MR_CARRYCLEAR(p) \ + (void *)((unsigned long)(p) & (~(unsigned long)(QM_MR_SIZE << 6))) + +static inline u8 MR_PTR2IDX(const struct qm_mr_entry *e) +{ + return ((uintptr_t)e >> 6) & (QM_MR_SIZE - 1); +} + +static inline const struct qm_mr_entry *MR_INC(const struct qm_mr_entry *e) +{ + return MR_CARRYCLEAR(e + 1); +} + +static inline int qm_mr_init(struct qm_portal *portal, enum qm_mr_pmode pmode, + enum qm_mr_cmode cmode) +{ + register struct qm_mr *mr = &portal->mr; + u32 cfg; + + mr->ring = portal->addr.addr_ce + QM_CL_MR; + mr->pi = qm_in(MR_PI_CINH) & (QM_MR_SIZE - 1); + mr->ci = qm_in(MR_CI_CINH) & (QM_MR_SIZE - 1); + mr->cursor = mr->ring + mr->ci; + mr->fill = qm_cyc_diff(QM_MR_SIZE, mr->ci, mr->pi); + mr->vbit = (qm_in(MR_PI_CINH) & QM_MR_SIZE) ? QM_MR_VERB_VBIT : 0; + mr->ithresh = qm_in(MR_ITR); +#ifdef CONFIG_FSL_DPA_CHECKING + mr->pmode = pmode; + mr->cmode = cmode; +#endif + cfg = (qm_in(CFG) & 0xfffff0ff) | + ((cmode & 1) << 8); /* QCSP_CFG:MM */ + qm_out(CFG, cfg); + return 0; +} + +static inline void qm_mr_finish(struct qm_portal *portal) +{ + register struct qm_mr *mr = &portal->mr; + + if (mr->ci != MR_PTR2IDX(mr->cursor)) + pr_crit("Ignoring completed MR entries\n"); +} + +static inline const struct qm_mr_entry *qm_mr_current(struct qm_portal *portal) +{ + register struct qm_mr *mr = &portal->mr; + + if (!mr->fill) + return NULL; + return mr->cursor; +} + +static inline u8 qm_mr_cursor(struct qm_portal *portal) +{ + register struct qm_mr *mr = &portal->mr; + + return MR_PTR2IDX(mr->cursor); +} + +static inline u8 qm_mr_next(struct qm_portal *portal) +{ + register struct qm_mr *mr = &portal->mr; + + DPA_ASSERT(mr->fill); + mr->cursor = MR_INC(mr->cursor); + return --mr->fill; +} + +static inline u8 qm_mr_pci_update(struct qm_portal *portal) +{ + register struct qm_mr *mr = &portal->mr; + u8 diff, old_pi = mr->pi; + + DPA_ASSERT(mr->pmode == qm_mr_pci); + mr->pi = qm_in(MR_PI_CINH); + diff = qm_cyc_diff(QM_MR_SIZE, old_pi, mr->pi); + mr->fill += diff; + return diff; +} + +static inline void qm_mr_pce_prefetch(struct qm_portal *portal) +{ + __maybe_unused register struct qm_mr *mr = &portal->mr; + + DPA_ASSERT(mr->pmode == qm_mr_pce); + qm_cl_invalidate(MR_PI); + qm_cl_touch_ro(MR_PI); +} + +static inline u8 qm_mr_pce_update(struct qm_portal *portal) +{ + register struct qm_mr *mr = &portal->mr; + u8 diff, old_pi = mr->pi; + + DPA_ASSERT(mr->pmode == qm_mr_pce); + mr->pi = qm_cl_in(MR_PI) & (QM_MR_SIZE - 1); + diff = qm_cyc_diff(QM_MR_SIZE, old_pi, mr->pi); + mr->fill += diff; + return diff; +} + +static inline void qm_mr_pvb_update(struct qm_portal *portal) +{ + register struct qm_mr *mr = &portal->mr; + const struct qm_mr_entry *res = qm_cl(mr->ring, mr->pi); + + DPA_ASSERT(mr->pmode == qm_mr_pvb); + /* when accessing 'verb', use __raw_readb() to ensure that compiler + * inlining doesn't try to optimise out "excess reads". */ + if ((__raw_readb(&res->verb) & QM_MR_VERB_VBIT) == mr->vbit) { + mr->pi = (mr->pi + 1) & (QM_MR_SIZE - 1); + if (!mr->pi) + mr->vbit ^= QM_MR_VERB_VBIT; + mr->fill++; + res = MR_INC(res); + } + dcbit_ro(res); +} + +static inline void qm_mr_cci_consume(struct qm_portal *portal, u8 num) +{ + register struct qm_mr *mr = &portal->mr; + + DPA_ASSERT(mr->cmode == qm_mr_cci); + mr->ci = (mr->ci + num) & (QM_MR_SIZE - 1); + qm_out(MR_CI_CINH, mr->ci); +} + +static inline void qm_mr_cci_consume_to_current(struct qm_portal *portal) +{ + register struct qm_mr *mr = &portal->mr; + + DPA_ASSERT(mr->cmode == qm_mr_cci); + mr->ci = MR_PTR2IDX(mr->cursor); + qm_out(MR_CI_CINH, mr->ci); +} + +static inline void qm_mr_cce_prefetch(struct qm_portal *portal) +{ + __maybe_unused register struct qm_mr *mr = &portal->mr; + + DPA_ASSERT(mr->cmode == qm_mr_cce); + qm_cl_invalidate(MR_CI); + qm_cl_touch_rw(MR_CI); +} + +static inline void qm_mr_cce_consume(struct qm_portal *portal, u8 num) +{ + register struct qm_mr *mr = &portal->mr; + + DPA_ASSERT(mr->cmode == qm_mr_cce); + mr->ci = (mr->ci + num) & (QM_MR_SIZE - 1); + qm_cl_out(MR_CI, mr->ci); +} + +static inline void qm_mr_cce_consume_to_current(struct qm_portal *portal) +{ + register struct qm_mr *mr = &portal->mr; + + DPA_ASSERT(mr->cmode == qm_mr_cce); + mr->ci = MR_PTR2IDX(mr->cursor); + qm_cl_out(MR_CI, mr->ci); +} + +static inline u8 qm_mr_get_ci(struct qm_portal *portal) +{ + register struct qm_mr *mr = &portal->mr; + + return mr->ci; +} + +static inline u8 qm_mr_get_ithresh(struct qm_portal *portal) +{ + register struct qm_mr *mr = &portal->mr; + + return mr->ithresh; +} + +static inline void qm_mr_set_ithresh(struct qm_portal *portal, u8 ithresh) +{ + qm_out(MR_ITR, ithresh); +} + +/* --- Management command API --- */ + +static inline int qm_mc_init(struct qm_portal *portal) +{ + register struct qm_mc *mc = &portal->mc; + + mc->cr = portal->addr.addr_ce + QM_CL_CR; + mc->rr = portal->addr.addr_ce + QM_CL_RR0; + mc->rridx = (__raw_readb(&mc->cr->__dont_write_directly__verb) & + QM_MCC_VERB_VBIT) ? 0 : 1; + mc->vbit = mc->rridx ? QM_MCC_VERB_VBIT : 0; +#ifdef CONFIG_FSL_DPA_CHECKING + mc->state = qman_mc_idle; +#endif + return 0; +} + +static inline void qm_mc_finish(struct qm_portal *portal) +{ + __maybe_unused register struct qm_mc *mc = &portal->mc; + + DPA_ASSERT(mc->state == qman_mc_idle); +#ifdef CONFIG_FSL_DPA_CHECKING + if (mc->state != qman_mc_idle) + pr_crit("Losing incomplete MC command\n"); +#endif +} + +static inline struct qm_mc_command *qm_mc_start(struct qm_portal *portal) +{ + register struct qm_mc *mc = &portal->mc; + + DPA_ASSERT(mc->state == qman_mc_idle); +#ifdef CONFIG_FSL_DPA_CHECKING + mc->state = qman_mc_user; +#endif + dcbz_64(mc->cr); + return mc->cr; +} + +static inline void qm_mc_abort(struct qm_portal *portal) +{ + __maybe_unused register struct qm_mc *mc = &portal->mc; + + DPA_ASSERT(mc->state == qman_mc_user); +#ifdef CONFIG_FSL_DPA_CHECKING + mc->state = qman_mc_idle; +#endif +} + +static inline void qm_mc_commit(struct qm_portal *portal, u8 myverb) +{ + register struct qm_mc *mc = &portal->mc; + struct qm_mc_result *rr = mc->rr + mc->rridx; + + DPA_ASSERT(mc->state == qman_mc_user); + lwsync(); + mc->cr->__dont_write_directly__verb = myverb | mc->vbit; + dcbf(mc->cr); + dcbit_ro(rr); +#ifdef CONFIG_FSL_DPA_CHECKING + mc->state = qman_mc_hw; +#endif +} + +static inline struct qm_mc_result *qm_mc_result(struct qm_portal *portal) +{ + register struct qm_mc *mc = &portal->mc; + struct qm_mc_result *rr = mc->rr + mc->rridx; + + DPA_ASSERT(mc->state == qman_mc_hw); + /* The inactive response register's verb byte always returns zero until + * its command is submitted and completed. This includes the valid-bit, + * in case you were wondering... */ + if (!__raw_readb(&rr->verb)) { + dcbit_ro(rr); + return NULL; + } + mc->rridx ^= 1; + mc->vbit ^= QM_MCC_VERB_VBIT; +#ifdef CONFIG_FSL_DPA_CHECKING + mc->state = qman_mc_idle; +#endif + return rr; +} + +/* --- Portal interrupt register API --- */ + +static inline int qm_isr_init(__always_unused struct qm_portal *portal) +{ + return 0; +} + +static inline void qm_isr_finish(__always_unused struct qm_portal *portal) +{ +} + +static inline void qm_isr_set_iperiod(struct qm_portal *portal, u16 iperiod) +{ + qm_out(ITPR, iperiod); +} + +static inline u32 __qm_isr_read(struct qm_portal *portal, enum qm_isr_reg n) +{ + return __qm_in(&portal->addr, QM_REG_ISR + (n << 2)); +} + +static inline void __qm_isr_write(struct qm_portal *portal, enum qm_isr_reg n, + u32 val) +{ + __qm_out(&portal->addr, QM_REG_ISR + (n << 2), val); +} |