swh:1:snp:c3bf2749e3476071fa748f67b0ffa2fdc5fe49d9
Tip revision: e49d033bddf5b565044e2abe4241353959bc9120 authored by Linus Torvalds on 04 April 2021, 21:15:36 UTC
Linux 5.12-rc6
Linux 5.12-rc6
Tip revision: e49d033
qbman-portal.h
/* SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause) */
/*
* Copyright (C) 2014-2016 Freescale Semiconductor, Inc.
* Copyright 2016-2019 NXP
*
*/
#ifndef __FSL_QBMAN_PORTAL_H
#define __FSL_QBMAN_PORTAL_H
#include <soc/fsl/dpaa2-fd.h>
#define QMAN_REV_4000 0x04000000
#define QMAN_REV_4100 0x04010000
#define QMAN_REV_4101 0x04010001
#define QMAN_REV_5000 0x05000000
#define QMAN_REV_MASK 0xffff0000
struct dpaa2_dq;
struct qbman_swp;
/* qbman software portal descriptor structure */
struct qbman_swp_desc {
void *cena_bar; /* Cache-enabled portal base address */
void __iomem *cinh_bar; /* Cache-inhibited portal base address */
u32 qman_version;
};
#define QBMAN_SWP_INTERRUPT_EQRI 0x01
#define QBMAN_SWP_INTERRUPT_EQDI 0x02
#define QBMAN_SWP_INTERRUPT_DQRI 0x04
#define QBMAN_SWP_INTERRUPT_RCRI 0x08
#define QBMAN_SWP_INTERRUPT_RCDI 0x10
#define QBMAN_SWP_INTERRUPT_VDCI 0x20
/* the structure for pull dequeue descriptor */
struct qbman_pull_desc {
u8 verb;
u8 numf;
u8 tok;
u8 reserved;
__le32 dq_src;
__le64 rsp_addr;
u64 rsp_addr_virt;
u8 padding[40];
};
enum qbman_pull_type_e {
/* dequeue with priority precedence, respect intra-class scheduling */
qbman_pull_type_prio = 1,
/* dequeue with active FQ precedence, respect ICS */
qbman_pull_type_active,
/* dequeue with active FQ precedence, no ICS */
qbman_pull_type_active_noics
};
/* Definitions for parsing dequeue entries */
#define QBMAN_RESULT_MASK 0x7f
#define QBMAN_RESULT_DQ 0x60
#define QBMAN_RESULT_FQRN 0x21
#define QBMAN_RESULT_FQRNI 0x22
#define QBMAN_RESULT_FQPN 0x24
#define QBMAN_RESULT_FQDAN 0x25
#define QBMAN_RESULT_CDAN 0x26
#define QBMAN_RESULT_CSCN_MEM 0x27
#define QBMAN_RESULT_CGCU 0x28
#define QBMAN_RESULT_BPSCN 0x29
#define QBMAN_RESULT_CSCN_WQ 0x2a
/* QBMan FQ management command codes */
#define QBMAN_FQ_SCHEDULE 0x48
#define QBMAN_FQ_FORCE 0x49
#define QBMAN_FQ_XON 0x4d
#define QBMAN_FQ_XOFF 0x4e
/* structure of enqueue descriptor */
struct qbman_eq_desc {
u8 verb;
u8 dca;
__le16 seqnum;
__le16 orpid;
__le16 reserved1;
__le32 tgtid;
__le32 tag;
__le16 qdbin;
u8 qpri;
u8 reserved[3];
u8 wae;
u8 rspid;
__le64 rsp_addr;
};
struct qbman_eq_desc_with_fd {
struct qbman_eq_desc desc;
u8 fd[32];
};
/* buffer release descriptor */
struct qbman_release_desc {
u8 verb;
u8 reserved;
__le16 bpid;
__le32 reserved2;
__le64 buf[7];
};
/* Management command result codes */
#define QBMAN_MC_RSLT_OK 0xf0
#define CODE_CDAN_WE_EN 0x1
#define CODE_CDAN_WE_CTX 0x4
/* portal data structure */
struct qbman_swp {
const struct qbman_swp_desc *desc;
void *addr_cena;
void __iomem *addr_cinh;
/* Management commands */
struct {
u32 valid_bit; /* 0x00 or 0x80 */
} mc;
/* Management response */
struct {
u32 valid_bit; /* 0x00 or 0x80 */
} mr;
/* Push dequeues */
u32 sdq;
/* Volatile dequeues */
struct {
atomic_t available; /* indicates if a command can be sent */
u32 valid_bit; /* 0x00 or 0x80 */
struct dpaa2_dq *storage; /* NULL if DQRR */
} vdq;
/* DQRR */
struct {
u32 next_idx;
u32 valid_bit;
u8 dqrr_size;
int reset_bug; /* indicates dqrr reset workaround is needed */
} dqrr;
struct {
u32 pi;
u32 pi_vb;
u32 pi_ring_size;
u32 pi_ci_mask;
u32 ci;
int available;
u32 pend;
u32 no_pfdr;
} eqcr;
spinlock_t access_spinlock;
};
/* Function pointers */
extern
int (*qbman_swp_enqueue_ptr)(struct qbman_swp *s,
const struct qbman_eq_desc *d,
const struct dpaa2_fd *fd);
extern
int (*qbman_swp_enqueue_multiple_ptr)(struct qbman_swp *s,
const struct qbman_eq_desc *d,
const struct dpaa2_fd *fd,
uint32_t *flags,
int num_frames);
extern
int (*qbman_swp_enqueue_multiple_desc_ptr)(struct qbman_swp *s,
const struct qbman_eq_desc *d,
const struct dpaa2_fd *fd,
int num_frames);
extern
int (*qbman_swp_pull_ptr)(struct qbman_swp *s, struct qbman_pull_desc *d);
extern
const struct dpaa2_dq *(*qbman_swp_dqrr_next_ptr)(struct qbman_swp *s);
extern
int (*qbman_swp_release_ptr)(struct qbman_swp *s,
const struct qbman_release_desc *d,
const u64 *buffers,
unsigned int num_buffers);
/* Functions */
struct qbman_swp *qbman_swp_init(const struct qbman_swp_desc *d);
void qbman_swp_finish(struct qbman_swp *p);
u32 qbman_swp_interrupt_read_status(struct qbman_swp *p);
void qbman_swp_interrupt_clear_status(struct qbman_swp *p, u32 mask);
u32 qbman_swp_interrupt_get_trigger(struct qbman_swp *p);
void qbman_swp_interrupt_set_trigger(struct qbman_swp *p, u32 mask);
int qbman_swp_interrupt_get_inhibit(struct qbman_swp *p);
void qbman_swp_interrupt_set_inhibit(struct qbman_swp *p, int inhibit);
void qbman_swp_push_get(struct qbman_swp *p, u8 channel_idx, int *enabled);
void qbman_swp_push_set(struct qbman_swp *p, u8 channel_idx, int enable);
void qbman_pull_desc_clear(struct qbman_pull_desc *d);
void qbman_pull_desc_set_storage(struct qbman_pull_desc *d,
struct dpaa2_dq *storage,
dma_addr_t storage_phys,
int stash);
void qbman_pull_desc_set_numframes(struct qbman_pull_desc *d, u8 numframes);
void qbman_pull_desc_set_fq(struct qbman_pull_desc *d, u32 fqid);
void qbman_pull_desc_set_wq(struct qbman_pull_desc *d, u32 wqid,
enum qbman_pull_type_e dct);
void qbman_pull_desc_set_channel(struct qbman_pull_desc *d, u32 chid,
enum qbman_pull_type_e dct);
void qbman_swp_dqrr_consume(struct qbman_swp *s, const struct dpaa2_dq *dq);
int qbman_result_has_new_result(struct qbman_swp *p, const struct dpaa2_dq *dq);
void qbman_eq_desc_clear(struct qbman_eq_desc *d);
void qbman_eq_desc_set_no_orp(struct qbman_eq_desc *d, int respond_success);
void qbman_eq_desc_set_token(struct qbman_eq_desc *d, u8 token);
void qbman_eq_desc_set_fq(struct qbman_eq_desc *d, u32 fqid);
void qbman_eq_desc_set_qd(struct qbman_eq_desc *d, u32 qdid,
u32 qd_bin, u32 qd_prio);
void qbman_release_desc_clear(struct qbman_release_desc *d);
void qbman_release_desc_set_bpid(struct qbman_release_desc *d, u16 bpid);
void qbman_release_desc_set_rcdi(struct qbman_release_desc *d, int enable);
int qbman_swp_acquire(struct qbman_swp *s, u16 bpid, u64 *buffers,
unsigned int num_buffers);
int qbman_swp_alt_fq_state(struct qbman_swp *s, u32 fqid,
u8 alt_fq_verb);
int qbman_swp_CDAN_set(struct qbman_swp *s, u16 channelid,
u8 we_mask, u8 cdan_en,
u64 ctx);
void *qbman_swp_mc_start(struct qbman_swp *p);
void qbman_swp_mc_submit(struct qbman_swp *p, void *cmd, u8 cmd_verb);
void *qbman_swp_mc_result(struct qbman_swp *p);
/**
* qbman_swp_enqueue() - Issue an enqueue command
* @s: the software portal used for enqueue
* @d: the enqueue descriptor
* @fd: the frame descriptor to be enqueued
*
* Return 0 for successful enqueue, -EBUSY if the EQCR is not ready.
*/
static inline int
qbman_swp_enqueue(struct qbman_swp *s, const struct qbman_eq_desc *d,
const struct dpaa2_fd *fd)
{
return qbman_swp_enqueue_ptr(s, d, fd);
}
/**
* qbman_swp_enqueue_multiple() - Issue a multi enqueue command
* using one enqueue descriptor
* @s: the software portal used for enqueue
* @d: the enqueue descriptor
* @fd: table pointer of frame descriptor table to be enqueued
* @flags: table pointer of QBMAN_ENQUEUE_FLAG_DCA flags, not used if NULL
* @num_frames: number of fd to be enqueued
*
* Return the number of fd enqueued, or a negative error number.
*/
static inline int
qbman_swp_enqueue_multiple(struct qbman_swp *s,
const struct qbman_eq_desc *d,
const struct dpaa2_fd *fd,
uint32_t *flags,
int num_frames)
{
return qbman_swp_enqueue_multiple_ptr(s, d, fd, flags, num_frames);
}
/**
* qbman_swp_enqueue_multiple_desc() - Issue a multi enqueue command
* using multiple enqueue descriptor
* @s: the software portal used for enqueue
* @d: table of minimal enqueue descriptor
* @fd: table pointer of frame descriptor table to be enqueued
* @num_frames: number of fd to be enqueued
*
* Return the number of fd enqueued, or a negative error number.
*/
static inline int
qbman_swp_enqueue_multiple_desc(struct qbman_swp *s,
const struct qbman_eq_desc *d,
const struct dpaa2_fd *fd,
int num_frames)
{
return qbman_swp_enqueue_multiple_desc_ptr(s, d, fd, num_frames);
}
/**
* qbman_result_is_DQ() - check if the dequeue result is a dequeue response
* @dq: the dequeue result to be checked
*
* DQRR entries may contain non-dequeue results, ie. notifications
*/
static inline int qbman_result_is_DQ(const struct dpaa2_dq *dq)
{
return ((dq->dq.verb & QBMAN_RESULT_MASK) == QBMAN_RESULT_DQ);
}
/**
* qbman_result_is_SCN() - Check the dequeue result is notification or not
* @dq: the dequeue result to be checked
*
*/
static inline int qbman_result_is_SCN(const struct dpaa2_dq *dq)
{
return !qbman_result_is_DQ(dq);
}
/* FQ Data Availability */
static inline int qbman_result_is_FQDAN(const struct dpaa2_dq *dq)
{
return ((dq->dq.verb & QBMAN_RESULT_MASK) == QBMAN_RESULT_FQDAN);
}
/* Channel Data Availability */
static inline int qbman_result_is_CDAN(const struct dpaa2_dq *dq)
{
return ((dq->dq.verb & QBMAN_RESULT_MASK) == QBMAN_RESULT_CDAN);
}
/* Congestion State Change */
static inline int qbman_result_is_CSCN(const struct dpaa2_dq *dq)
{
return ((dq->dq.verb & QBMAN_RESULT_MASK) == QBMAN_RESULT_CSCN_WQ);
}
/* Buffer Pool State Change */
static inline int qbman_result_is_BPSCN(const struct dpaa2_dq *dq)
{
return ((dq->dq.verb & QBMAN_RESULT_MASK) == QBMAN_RESULT_BPSCN);
}
/* Congestion Group Count Update */
static inline int qbman_result_is_CGCU(const struct dpaa2_dq *dq)
{
return ((dq->dq.verb & QBMAN_RESULT_MASK) == QBMAN_RESULT_CGCU);
}
/* Retirement */
static inline int qbman_result_is_FQRN(const struct dpaa2_dq *dq)
{
return ((dq->dq.verb & QBMAN_RESULT_MASK) == QBMAN_RESULT_FQRN);
}
/* Retirement Immediate */
static inline int qbman_result_is_FQRNI(const struct dpaa2_dq *dq)
{
return ((dq->dq.verb & QBMAN_RESULT_MASK) == QBMAN_RESULT_FQRNI);
}
/* Park */
static inline int qbman_result_is_FQPN(const struct dpaa2_dq *dq)
{
return ((dq->dq.verb & QBMAN_RESULT_MASK) == QBMAN_RESULT_FQPN);
}
/**
* qbman_result_SCN_state() - Get the state field in State-change notification
*/
static inline u8 qbman_result_SCN_state(const struct dpaa2_dq *scn)
{
return scn->scn.state;
}
#define SCN_RID_MASK 0x00FFFFFF
/**
* qbman_result_SCN_rid() - Get the resource id in State-change notification
*/
static inline u32 qbman_result_SCN_rid(const struct dpaa2_dq *scn)
{
return le32_to_cpu(scn->scn.rid_tok) & SCN_RID_MASK;
}
/**
* qbman_result_SCN_ctx() - Get the context data in State-change notification
*/
static inline u64 qbman_result_SCN_ctx(const struct dpaa2_dq *scn)
{
return le64_to_cpu(scn->scn.ctx);
}
/**
* qbman_swp_fq_schedule() - Move the fq to the scheduled state
* @s: the software portal object
* @fqid: the index of frame queue to be scheduled
*
* There are a couple of different ways that a FQ can end up parked state,
* This schedules it.
*
* Return 0 for success, or negative error code for failure.
*/
static inline int qbman_swp_fq_schedule(struct qbman_swp *s, u32 fqid)
{
return qbman_swp_alt_fq_state(s, fqid, QBMAN_FQ_SCHEDULE);
}
/**
* qbman_swp_fq_force() - Force the FQ to fully scheduled state
* @s: the software portal object
* @fqid: the index of frame queue to be forced
*
* Force eligible will force a tentatively-scheduled FQ to be fully-scheduled
* and thus be available for selection by any channel-dequeuing behaviour (push
* or pull). If the FQ is subsequently "dequeued" from the channel and is still
* empty at the time this happens, the resulting dq_entry will have no FD.
* (qbman_result_DQ_fd() will return NULL.)
*
* Return 0 for success, or negative error code for failure.
*/
static inline int qbman_swp_fq_force(struct qbman_swp *s, u32 fqid)
{
return qbman_swp_alt_fq_state(s, fqid, QBMAN_FQ_FORCE);
}
/**
* qbman_swp_fq_xon() - sets FQ flow-control to XON
* @s: the software portal object
* @fqid: the index of frame queue
*
* This setting doesn't affect enqueues to the FQ, just dequeues.
*
* Return 0 for success, or negative error code for failure.
*/
static inline int qbman_swp_fq_xon(struct qbman_swp *s, u32 fqid)
{
return qbman_swp_alt_fq_state(s, fqid, QBMAN_FQ_XON);
}
/**
* qbman_swp_fq_xoff() - sets FQ flow-control to XOFF
* @s: the software portal object
* @fqid: the index of frame queue
*
* This setting doesn't affect enqueues to the FQ, just dequeues.
* XOFF FQs will remain in the tenatively-scheduled state, even when
* non-empty, meaning they won't be selected for scheduled dequeuing.
* If a FQ is changed to XOFF after it had already become truly-scheduled
* to a channel, and a pull dequeue of that channel occurs that selects
* that FQ for dequeuing, then the resulting dq_entry will have no FD.
* (qbman_result_DQ_fd() will return NULL.)
*
* Return 0 for success, or negative error code for failure.
*/
static inline int qbman_swp_fq_xoff(struct qbman_swp *s, u32 fqid)
{
return qbman_swp_alt_fq_state(s, fqid, QBMAN_FQ_XOFF);
}
/* If the user has been allocated a channel object that is going to generate
* CDANs to another channel, then the qbman_swp_CDAN* functions will be
* necessary.
*
* CDAN-enabled channels only generate a single CDAN notification, after which
* they need to be reenabled before they'll generate another. The idea is
* that pull dequeuing will occur in reaction to the CDAN, followed by a
* reenable step. Each function generates a distinct command to hardware, so a
* combination function is provided if the user wishes to modify the "context"
* (which shows up in each CDAN message) each time they reenable, as a single
* command to hardware.
*/
/**
* qbman_swp_CDAN_set_context() - Set CDAN context
* @s: the software portal object
* @channelid: the channel index
* @ctx: the context to be set in CDAN
*
* Return 0 for success, or negative error code for failure.
*/
static inline int qbman_swp_CDAN_set_context(struct qbman_swp *s, u16 channelid,
u64 ctx)
{
return qbman_swp_CDAN_set(s, channelid,
CODE_CDAN_WE_CTX,
0, ctx);
}
/**
* qbman_swp_CDAN_enable() - Enable CDAN for the channel
* @s: the software portal object
* @channelid: the index of the channel to generate CDAN
*
* Return 0 for success, or negative error code for failure.
*/
static inline int qbman_swp_CDAN_enable(struct qbman_swp *s, u16 channelid)
{
return qbman_swp_CDAN_set(s, channelid,
CODE_CDAN_WE_EN,
1, 0);
}
/**
* qbman_swp_CDAN_disable() - disable CDAN for the channel
* @s: the software portal object
* @channelid: the index of the channel to generate CDAN
*
* Return 0 for success, or negative error code for failure.
*/
static inline int qbman_swp_CDAN_disable(struct qbman_swp *s, u16 channelid)
{
return qbman_swp_CDAN_set(s, channelid,
CODE_CDAN_WE_EN,
0, 0);
}
/**
* qbman_swp_CDAN_set_context_enable() - Set CDAN contest and enable CDAN
* @s: the software portal object
* @channelid: the index of the channel to generate CDAN
* @ctx:i the context set in CDAN
*
* Return 0 for success, or negative error code for failure.
*/
static inline int qbman_swp_CDAN_set_context_enable(struct qbman_swp *s,
u16 channelid,
u64 ctx)
{
return qbman_swp_CDAN_set(s, channelid,
CODE_CDAN_WE_EN | CODE_CDAN_WE_CTX,
1, ctx);
}
/* Wraps up submit + poll-for-result */
static inline void *qbman_swp_mc_complete(struct qbman_swp *swp, void *cmd,
u8 cmd_verb)
{
int loopvar = 2000;
qbman_swp_mc_submit(swp, cmd, cmd_verb);
do {
cmd = qbman_swp_mc_result(swp);
} while (!cmd && loopvar--);
WARN_ON(!loopvar);
return cmd;
}
/* Query APIs */
struct qbman_fq_query_np_rslt {
u8 verb;
u8 rslt;
u8 st1;
u8 st2;
u8 reserved[2];
__le16 od1_sfdr;
__le16 od2_sfdr;
__le16 od3_sfdr;
__le16 ra1_sfdr;
__le16 ra2_sfdr;
__le32 pfdr_hptr;
__le32 pfdr_tptr;
__le32 frm_cnt;
__le32 byte_cnt;
__le16 ics_surp;
u8 is;
u8 reserved2[29];
};
int qbman_fq_query_state(struct qbman_swp *s, u32 fqid,
struct qbman_fq_query_np_rslt *r);
u32 qbman_fq_state_frame_count(const struct qbman_fq_query_np_rslt *r);
u32 qbman_fq_state_byte_count(const struct qbman_fq_query_np_rslt *r);
struct qbman_bp_query_rslt {
u8 verb;
u8 rslt;
u8 reserved[4];
u8 bdi;
u8 state;
__le32 fill;
__le32 hdotr;
__le16 swdet;
__le16 swdxt;
__le16 hwdet;
__le16 hwdxt;
__le16 swset;
__le16 swsxt;
__le16 vbpid;
__le16 icid;
__le64 bpscn_addr;
__le64 bpscn_ctx;
__le16 hw_targ;
u8 dbe;
u8 reserved2;
u8 sdcnt;
u8 hdcnt;
u8 sscnt;
u8 reserved3[9];
};
int qbman_bp_query(struct qbman_swp *s, u16 bpid,
struct qbman_bp_query_rslt *r);
u32 qbman_bp_info_num_free_bufs(struct qbman_bp_query_rslt *a);
/**
* qbman_swp_release() - Issue a buffer release command
* @s: the software portal object
* @d: the release descriptor
* @buffers: a pointer pointing to the buffer address to be released
* @num_buffers: number of buffers to be released, must be less than 8
*
* Return 0 for success, -EBUSY if the release command ring is not ready.
*/
static inline int qbman_swp_release(struct qbman_swp *s,
const struct qbman_release_desc *d,
const u64 *buffers,
unsigned int num_buffers)
{
return qbman_swp_release_ptr(s, d, buffers, num_buffers);
}
/**
* qbman_swp_pull() - Issue the pull dequeue command
* @s: the software portal object
* @d: the software portal descriptor which has been configured with
* the set of qbman_pull_desc_set_*() calls
*
* Return 0 for success, and -EBUSY if the software portal is not ready
* to do pull dequeue.
*/
static inline int qbman_swp_pull(struct qbman_swp *s,
struct qbman_pull_desc *d)
{
return qbman_swp_pull_ptr(s, d);
}
/**
* qbman_swp_dqrr_next() - Get an valid DQRR entry
* @s: the software portal object
*
* Return NULL if there are no unconsumed DQRR entries. Return a DQRR entry
* only once, so repeated calls can return a sequence of DQRR entries, without
* requiring they be consumed immediately or in any particular order.
*/
static inline const struct dpaa2_dq *qbman_swp_dqrr_next(struct qbman_swp *s)
{
return qbman_swp_dqrr_next_ptr(s);
}
#endif /* __FSL_QBMAN_PORTAL_H */