common/cnxk: support bandwidth profile configure

Implement RoC API to configure HW bandwidth profile for
CN10K platform.

Signed-off-by: Sunil Kumar Kori <skori@marvell.com>
Acked-by: Jerin Jacob <jerinj@marvell.com>
This commit is contained in:
Sunil Kumar Kori 2021-10-12 12:35:50 +05:30 committed by Jerin Jacob
parent bf7290c65f
commit 4ad8bc2fc7
4 changed files with 361 additions and 0 deletions

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@ -2113,6 +2113,55 @@ struct nix_lso_format {
#define NIX_RPM_MAX_HW_FRS 16380UL
#define NIX_MIN_HW_FRS 60UL
/** NIX policer rate limits */
#define NIX_BPF_MAX_RATE_DIV_EXP 12
#define NIX_BPF_MAX_RATE_EXPONENT 0xf
#define NIX_BPF_MAX_RATE_MANTISSA 0xff
#define NIX_BPF_RATE_CONST 2000000ULL
/* NIX rate calculation in Bits/Sec
* PIR_ADD = ((256 + NIX_*_PIR[RATE_MANTISSA])
* << NIX_*_PIR[RATE_EXPONENT]) / 256
* PIR = (2E6 * PIR_ADD / (1 << NIX_*_PIR[RATE_DIVIDER_EXPONENT]))
*
* CIR_ADD = ((256 + NIX_*_CIR[RATE_MANTISSA])
* << NIX_*_CIR[RATE_EXPONENT]) / 256
* CIR = (2E6 * CIR_ADD / (CCLK_TICKS << NIX_*_CIR[RATE_DIVIDER_EXPONENT]))
*/
#define NIX_BPF_RATE(exponent, mantissa, div_exp) \
((NIX_BPF_RATE_CONST * ((256 + (mantissa)) << (exponent))) / \
(((1ull << (div_exp)) * 256)))
/* Meter rate limits in Bits/Sec */
#define NIX_BPF_RATE_MIN NIX_BPF_RATE(0, 0, NIX_BPF_MAX_RATE_DIV_EXP)
#define NIX_BPF_RATE_MAX \
NIX_BPF_RATE(NIX_BPF_MAX_RATE_EXPONENT, NIX_BPF_MAX_RATE_MANTISSA, 0)
#define NIX_BPF_DEFAULT_ADJUST_MANTISSA 511
#define NIX_BPF_DEFAULT_ADJUST_EXPONENT 0
/** NIX burst limits */
#define NIX_BPF_MAX_BURST_EXPONENT 0xf
#define NIX_BPF_MAX_BURST_MANTISSA 0xff
/* NIX burst calculation
* PIR_BURST = ((256 + NIX_*_PIR[BURST_MANTISSA])
* << (NIX_*_PIR[BURST_EXPONENT] + 1))
* / 256
*
* CIR_BURST = ((256 + NIX_*_CIR[BURST_MANTISSA])
* << (NIX_*_CIR[BURST_EXPONENT] + 1))
* / 256
*/
#define NIX_BPF_BURST(exponent, mantissa) \
(((256 + (mantissa)) << ((exponent) + 1)) / 256)
/** Meter burst limits */
#define NIX_BPF_BURST_MIN NIX_BPF_BURST(0, 0)
#define NIX_BPF_BURST_MAX \
NIX_BPF_BURST(NIX_BPF_MAX_BURST_EXPONENT, NIX_BPF_MAX_BURST_MANTISSA)
/* NIX rate limits */
#define NIX_TM_MAX_RATE_DIV_EXP 12
#define NIX_TM_MAX_RATE_EXPONENT 0xf

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@ -39,6 +39,74 @@ enum roc_nix_bpf_level_flag {
ROC_NIX_BPF_LEVEL_F_TOP = BIT(2),
};
enum roc_nix_bpf_pc_mode {
ROC_NIX_BPF_PC_MODE_VLAN_INNER,
ROC_NIX_BPF_PC_MODE_VLAN_OUTER,
ROC_NIX_BPF_PC_MODE_DSCP_INNER,
ROC_NIX_BPF_PC_MODE_DSCP_OUTER,
ROC_NIX_BPF_PC_MODE_GEN_INNER,
ROC_NIX_BPF_PC_MODE_GEN_OUTER
};
enum roc_nix_bpf_color {
ROC_NIX_BPF_COLOR_GREEN,
ROC_NIX_BPF_COLOR_YELLOW,
ROC_NIX_BPF_COLOR_RED,
ROC_NIX_BPF_COLOR_MAX
};
enum roc_nix_bpf_algo {
ROC_NIX_BPF_ALGO_NONE,
ROC_NIX_BPF_ALGO_2698,
ROC_NIX_BPF_ALGO_4115,
ROC_NIX_BPF_ALGO_2697
};
enum roc_nix_bpf_lmode { ROC_NIX_BPF_LMODE_BYTE, ROC_NIX_BPF_LMODE_PACKET };
enum roc_nix_bpf_action {
ROC_NIX_BPF_ACTION_PASS,
ROC_NIX_BPF_ACTION_DROP,
ROC_NIX_BPF_ACTION_RED
};
struct roc_nix_bpf_cfg {
enum roc_nix_bpf_algo alg;
enum roc_nix_bpf_lmode lmode;
enum roc_nix_bpf_color icolor;
enum roc_nix_bpf_pc_mode pc_mode;
bool tnl_ena;
union {
/* Valid when *alg* is set to ROC_NIX_BPF_ALGO_2697. */
struct {
uint64_t cir;
uint64_t cbs;
uint64_t ebs;
} algo2697;
/* Valid when *alg* is set to ROC_NIX_BPF_ALGO_2698. */
struct {
uint64_t cir;
uint64_t pir;
uint64_t cbs;
uint64_t pbs;
} algo2698;
/* Valid when *alg* is set to ROC_NIX_BPF_ALGO_4115. */
struct {
uint64_t cir;
uint64_t eir;
uint64_t cbs;
uint64_t ebs;
} algo4115;
};
enum roc_nix_bpf_action action[ROC_NIX_BPF_COLOR_MAX];
/* Reserved for future config*/
uint32_t rsvd[3];
};
struct roc_nix_bpf_objs {
uint16_t level;
uint16_t count;
@ -539,6 +607,10 @@ int __roc_api roc_nix_bpf_free(struct roc_nix *roc_nix,
int __roc_api roc_nix_bpf_free_all(struct roc_nix *roc_nix);
int __roc_api roc_nix_bpf_config(struct roc_nix *roc_nix, uint16_t id,
enum roc_nix_bpf_level_flag lvl_flag,
struct roc_nix_bpf_cfg *cfg);
uint8_t __roc_api
roc_nix_bpf_level_to_idx(enum roc_nix_bpf_level_flag lvl_flag);

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@ -26,6 +26,105 @@ get_mbox(struct roc_nix *roc_nix)
return dev->mbox;
}
static inline uint64_t
meter_rate_to_nix(uint64_t value, uint64_t *exponent_p, uint64_t *mantissa_p,
uint64_t *div_exp_p)
{
uint64_t div_exp, exponent, mantissa;
/* Boundary checks */
if (value < NIX_BPF_RATE_MIN || value > NIX_BPF_RATE_MAX)
return 0;
if (value <= NIX_BPF_RATE(0, 0, 0)) {
/* Calculate rate div_exp and mantissa using
* the following formula:
*
* value = (2E6 * (256 + mantissa)
* / ((1 << div_exp) * 256))
*/
div_exp = 0;
exponent = 0;
mantissa = NIX_BPF_MAX_RATE_MANTISSA;
while (value < (NIX_BPF_RATE_CONST / (1 << div_exp)))
div_exp += 1;
while (value < ((NIX_BPF_RATE_CONST * (256 + mantissa)) /
((1 << div_exp) * 256)))
mantissa -= 1;
} else {
/* Calculate rate exponent and mantissa using
* the following formula:
*
* value = (2E6 * ((256 + mantissa) << exponent)) / 256
*
*/
div_exp = 0;
exponent = NIX_BPF_MAX_RATE_EXPONENT;
mantissa = NIX_BPF_MAX_RATE_MANTISSA;
while (value < (NIX_BPF_RATE_CONST * (1 << exponent)))
exponent -= 1;
while (value <
((NIX_BPF_RATE_CONST * ((256 + mantissa) << exponent)) /
256))
mantissa -= 1;
}
if (div_exp > NIX_BPF_MAX_RATE_DIV_EXP ||
exponent > NIX_BPF_MAX_RATE_EXPONENT ||
mantissa > NIX_BPF_MAX_RATE_MANTISSA)
return 0;
if (div_exp_p)
*div_exp_p = div_exp;
if (exponent_p)
*exponent_p = exponent;
if (mantissa_p)
*mantissa_p = mantissa;
/* Calculate real rate value */
return NIX_BPF_RATE(exponent, mantissa, div_exp);
}
static inline uint64_t
meter_burst_to_nix(uint64_t value, uint64_t *exponent_p, uint64_t *mantissa_p)
{
uint64_t exponent, mantissa;
if (value < NIX_BPF_BURST_MIN || value > NIX_BPF_BURST_MAX)
return 0;
/* Calculate burst exponent and mantissa using
* the following formula:
*
* value = (((256 + mantissa) << (exponent + 1)
/ 256)
*
*/
exponent = NIX_BPF_MAX_BURST_EXPONENT;
mantissa = NIX_BPF_MAX_BURST_MANTISSA;
while (value < (1ull << (exponent + 1)))
exponent -= 1;
while (value < ((256 + mantissa) << (exponent + 1)) / 256)
mantissa -= 1;
if (exponent > NIX_BPF_MAX_BURST_EXPONENT ||
mantissa > NIX_BPF_MAX_BURST_MANTISSA)
return 0;
if (exponent_p)
*exponent_p = exponent;
if (mantissa_p)
*mantissa_p = mantissa;
return NIX_BPF_BURST(exponent, mantissa);
}
uint8_t
roc_nix_bpf_level_to_idx(enum roc_nix_bpf_level_flag level_f)
{
@ -210,3 +309,143 @@ roc_nix_bpf_free_all(struct roc_nix *roc_nix)
req->free_all = true;
return mbox_process(mbox);
}
int
roc_nix_bpf_config(struct roc_nix *roc_nix, uint16_t id,
enum roc_nix_bpf_level_flag lvl_flag,
struct roc_nix_bpf_cfg *cfg)
{
uint64_t exponent_p = 0, mantissa_p = 0, div_exp_p = 0;
struct mbox *mbox = get_mbox(roc_nix);
struct nix_cn10k_aq_enq_req *aq;
uint8_t level_idx;
if (roc_model_is_cn9k())
return NIX_ERR_HW_NOTSUP;
if (!cfg)
return NIX_ERR_PARAM;
level_idx = roc_nix_bpf_level_to_idx(lvl_flag);
if (level_idx == ROC_NIX_BPF_LEVEL_IDX_INVALID)
return NIX_ERR_PARAM;
aq = mbox_alloc_msg_nix_cn10k_aq_enq(mbox);
if (aq == NULL)
return -ENOSPC;
aq->qidx = (sw_to_hw_lvl_map[level_idx] << 14) | id;
aq->ctype = NIX_AQ_CTYPE_BAND_PROF;
aq->op = NIX_AQ_INSTOP_WRITE;
aq->prof.adjust_exponent = NIX_BPF_DEFAULT_ADJUST_EXPONENT;
aq->prof.adjust_mantissa = NIX_BPF_DEFAULT_ADJUST_MANTISSA;
if (cfg->lmode == ROC_NIX_BPF_LMODE_BYTE)
aq->prof.adjust_mantissa = NIX_BPF_DEFAULT_ADJUST_MANTISSA / 2;
aq->prof_mask.adjust_exponent = ~(aq->prof_mask.adjust_exponent);
aq->prof_mask.adjust_mantissa = ~(aq->prof_mask.adjust_mantissa);
switch (cfg->alg) {
case ROC_NIX_BPF_ALGO_2697:
meter_rate_to_nix(cfg->algo2697.cir, &exponent_p, &mantissa_p,
&div_exp_p);
aq->prof.cir_mantissa = mantissa_p;
aq->prof.cir_exponent = exponent_p;
meter_burst_to_nix(cfg->algo2697.cbs, &exponent_p, &mantissa_p);
aq->prof.cbs_mantissa = mantissa_p;
aq->prof.cbs_exponent = exponent_p;
meter_burst_to_nix(cfg->algo2697.ebs, &exponent_p, &mantissa_p);
aq->prof.pebs_mantissa = mantissa_p;
aq->prof.pebs_exponent = exponent_p;
aq->prof_mask.cir_mantissa = ~(aq->prof_mask.cir_mantissa);
aq->prof_mask.cbs_mantissa = ~(aq->prof_mask.cbs_mantissa);
aq->prof_mask.pebs_mantissa = ~(aq->prof_mask.pebs_mantissa);
aq->prof_mask.cir_exponent = ~(aq->prof_mask.cir_exponent);
aq->prof_mask.cbs_exponent = ~(aq->prof_mask.cbs_exponent);
aq->prof_mask.pebs_exponent = ~(aq->prof_mask.pebs_exponent);
break;
case ROC_NIX_BPF_ALGO_2698:
meter_rate_to_nix(cfg->algo2698.cir, &exponent_p, &mantissa_p,
&div_exp_p);
aq->prof.cir_mantissa = mantissa_p;
aq->prof.cir_exponent = exponent_p;
meter_rate_to_nix(cfg->algo2698.pir, &exponent_p, &mantissa_p,
&div_exp_p);
aq->prof.peir_mantissa = mantissa_p;
aq->prof.peir_exponent = exponent_p;
meter_burst_to_nix(cfg->algo2698.cbs, &exponent_p, &mantissa_p);
aq->prof.cbs_mantissa = mantissa_p;
aq->prof.cbs_exponent = exponent_p;
meter_burst_to_nix(cfg->algo2698.pbs, &exponent_p, &mantissa_p);
aq->prof.pebs_mantissa = mantissa_p;
aq->prof.pebs_exponent = exponent_p;
aq->prof_mask.cir_mantissa = ~(aq->prof_mask.cir_mantissa);
aq->prof_mask.peir_mantissa = ~(aq->prof_mask.peir_mantissa);
aq->prof_mask.cbs_mantissa = ~(aq->prof_mask.cbs_mantissa);
aq->prof_mask.pebs_mantissa = ~(aq->prof_mask.pebs_mantissa);
aq->prof_mask.cir_exponent = ~(aq->prof_mask.cir_exponent);
aq->prof_mask.peir_exponent = ~(aq->prof_mask.peir_exponent);
aq->prof_mask.cbs_exponent = ~(aq->prof_mask.cbs_exponent);
aq->prof_mask.pebs_exponent = ~(aq->prof_mask.pebs_exponent);
break;
case ROC_NIX_BPF_ALGO_4115:
meter_rate_to_nix(cfg->algo4115.cir, &exponent_p, &mantissa_p,
&div_exp_p);
aq->prof.cir_mantissa = mantissa_p;
aq->prof.cir_exponent = exponent_p;
meter_rate_to_nix(cfg->algo4115.eir, &exponent_p, &mantissa_p,
&div_exp_p);
aq->prof.peir_mantissa = mantissa_p;
aq->prof.peir_exponent = exponent_p;
meter_burst_to_nix(cfg->algo4115.cbs, &exponent_p, &mantissa_p);
aq->prof.cbs_mantissa = mantissa_p;
aq->prof.cbs_exponent = exponent_p;
meter_burst_to_nix(cfg->algo4115.ebs, &exponent_p, &mantissa_p);
aq->prof.pebs_mantissa = mantissa_p;
aq->prof.pebs_exponent = exponent_p;
aq->prof_mask.cir_mantissa = ~(aq->prof_mask.cir_mantissa);
aq->prof_mask.peir_mantissa = ~(aq->prof_mask.peir_mantissa);
aq->prof_mask.cbs_mantissa = ~(aq->prof_mask.cbs_mantissa);
aq->prof_mask.pebs_mantissa = ~(aq->prof_mask.pebs_mantissa);
aq->prof_mask.cir_exponent = ~(aq->prof_mask.cir_exponent);
aq->prof_mask.peir_exponent = ~(aq->prof_mask.peir_exponent);
aq->prof_mask.cbs_exponent = ~(aq->prof_mask.cbs_exponent);
aq->prof_mask.pebs_exponent = ~(aq->prof_mask.pebs_exponent);
break;
default:
return NIX_ERR_PARAM;
}
aq->prof.lmode = cfg->lmode;
aq->prof.icolor = cfg->icolor;
aq->prof.pc_mode = cfg->pc_mode;
aq->prof.tnl_ena = cfg->tnl_ena;
aq->prof.gc_action = cfg->action[ROC_NIX_BPF_COLOR_GREEN];
aq->prof.yc_action = cfg->action[ROC_NIX_BPF_COLOR_YELLOW];
aq->prof.rc_action = cfg->action[ROC_NIX_BPF_COLOR_RED];
aq->prof_mask.lmode = ~(aq->prof_mask.lmode);
aq->prof_mask.icolor = ~(aq->prof_mask.icolor);
aq->prof_mask.pc_mode = ~(aq->prof_mask.pc_mode);
aq->prof_mask.tnl_ena = ~(aq->prof_mask.tnl_ena);
aq->prof_mask.gc_action = ~(aq->prof_mask.gc_action);
aq->prof_mask.yc_action = ~(aq->prof_mask.yc_action);
aq->prof_mask.rc_action = ~(aq->prof_mask.rc_action);
return mbox_process(mbox);
}

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@ -83,6 +83,7 @@ INTERNAL {
roc_se_auth_key_set;
roc_se_ciph_key_set;
roc_nix_bpf_alloc;
roc_nix_bpf_config;
roc_nix_bpf_count_get;
roc_nix_bpf_free;
roc_nix_bpf_free_all;