common/cnxk: add routines to operate CPT CQ

Added routines to enable, disable and initialize
CPT CQ if cpt_cq_ena is set

Signed-off-by: Rakesh Kudurumalla <[email protected]>

Author: Rakesh Kudurumalla

drivers/common/cnxk/roc_cpt.c

@@ -24,6 +24,7 @@
 #define CPT_LF_MAX_NB_DESC	128000
 #define CPT_LF_DEFAULT_NB_DESC	1024
 #define CPT_LF_FC_MIN_THRESHOLD 32
+#define CQ_ENTRY_SIZE_UNIT	32
 
 static struct cpt_int_cb {
 	roc_cpt_int_misc_cb_t cb;
@@ -687,6 +688,37 @@ cpt_get_blkaddr(struct dev *dev)
 	return reg & 0x1FFULL ? RVU_BLOCK_ADDR_CPT1 : RVU_BLOCK_ADDR_CPT0;
 }
 
+int
+cpt_lf_cq_init(struct roc_cpt_lf *lf)
+{
+	union cpt_lf_cq_size lf_cq_size = {.u = 0x0};
+	union cpt_lf_cq_base lf_cq_base = {.u = 0x0};
+	uint8_t max_cq_entry_size = 0x3;
+	uintptr_t addr;
+	uint32_t len;
+
+	if (!lf->cq_size || lf->cq_entry_size > max_cq_entry_size)
+		return -EINVAL;
+
+	/* Disable CPT completion queue */
+	roc_cpt_cq_disable(lf);
+
+	/* Set command queue base address */
+	len = PLT_ALIGN(lf->cq_size * (CQ_ENTRY_SIZE_UNIT << lf->cq_entry_size), ROC_ALIGN);
+	lf->cq_vaddr = plt_zmalloc(len, ROC_ALIGN);
+	if (lf->cq_vaddr == NULL)
+		return -ENOMEM;
+
+	addr = (uintptr_t)lf->cq_vaddr;
+
+	lf_cq_base.s.addr = addr >> 7;
+	plt_write64(lf_cq_base.u, lf->rbase + CPT_LF_CQ_BASE);
+	lf_cq_size.s.size = PLT_ALIGN(len, ROC_ALIGN);
+	plt_write64(lf_cq_size.u, lf->rbase + CPT_LF_CQ_SIZE);
+
+	return 0;
+}
+
 int
 cpt_lf_init(struct roc_cpt_lf *lf, bool skip_register_irq)
 {
@@ -713,14 +745,22 @@ cpt_lf_init(struct roc_cpt_lf *lf, bool skip_register_irq)
 	/* Initialize instruction queue */
 	cpt_iq_init(lf);
 
+	if (lf->cpt_cq_ena) {
+		rc = cpt_lf_cq_init(lf);
+		if (rc)
+			goto disable_iq;
+	}
+
 	if (!skip_register_irq) {
 		rc = cpt_lf_register_irqs(lf, cpt_lf_misc_irq, cpt_lf_done_irq);
 		if (rc)
-			goto disable_iq;
+			goto disable_cq;
 	}
 
 	return 0;
 
+disable_cq:
+	cpt_lf_cq_fini(lf);
 disable_iq:
 	roc_cpt_iq_disable(lf);
 	plt_free(iq_mem);
@@ -954,6 +994,7 @@ cpt_lf_fini(struct roc_cpt_lf *lf, bool skip_register_irq)
 	if (!skip_register_irq)
 		cpt_lf_unregister_irqs(lf, cpt_lf_misc_irq, cpt_lf_done_irq);
 
+	cpt_lf_cq_fini(lf);
 	/* Disable IQ */
 	roc_cpt_iq_disable(lf);
 	roc_cpt_iq_reset(lf);
@@ -963,6 +1004,17 @@ cpt_lf_fini(struct roc_cpt_lf *lf, bool skip_register_irq)
 	lf->iq_vaddr = NULL;
 }
 
+void
+cpt_lf_cq_fini(struct roc_cpt_lf *lf)
+{
+	if (!lf->cpt_cq_ena)
+		return;
+
+	roc_cpt_cq_disable(lf);
+	plt_free(lf->cq_vaddr);
+	lf->cq_vaddr = NULL;
+}
+
 void
 roc_cpt_lf_reset(struct roc_cpt_lf *lf)
 {
@@ -1074,6 +1126,26 @@ roc_cpt_eng_grp_add(struct roc_cpt *roc_cpt, enum cpt_eng_type eng_type)
 	return ret;
 }
 
+void
+roc_cpt_cq_enable(struct roc_cpt_lf *lf)
+{
+	union cpt_lf_cq_ctl lf_cq_ctl = {.u = 0x0};
+
+	lf_cq_ctl.s.ena = 1;
+	lf_cq_ctl.s.dq_ack_ena = lf->dq_ack_ena;
+	lf_cq_ctl.s.entry_size = lf->cq_entry_size;
+	lf_cq_ctl.s.cq_all = lf->cq_all;
+	plt_write64(lf_cq_ctl.u, lf->rbase + CPT_LF_CQ_CTL);
+}
+
+void
+roc_cpt_cq_disable(struct roc_cpt_lf *lf)
+{
+	union cpt_lf_cq_ctl lf_cq_ctl = {.u = 0x0};
+
+	plt_write64(lf_cq_ctl.u, lf->rbase + CPT_LF_CQ_CTL);
+}
+
 void
 roc_cpt_iq_disable(struct roc_cpt_lf *lf)
 {

drivers/common/cnxk/roc_cpt.h

@@ -152,10 +152,16 @@ struct roc_cpt_lf {
 	/* Input parameters */
 	uint16_t lf_id;
 	uint32_t nb_desc;
+	bool dq_ack_ena;
+	bool cq_all;
+	bool cpt_cq_ena;
+	uint8_t cq_entry_size;
+	uint32_t cq_size;
 	/* End of Input parameters */
 	struct plt_pci_device *pci_dev;
 	struct dev *dev;
 	struct roc_cpt *roc_cpt;
+	uint16_t *cq_vaddr;
 	uintptr_t rbase;
 	uintptr_t lmt_base;
 	uint16_t msixoff;
@@ -231,6 +237,8 @@ int __roc_api roc_cpt_afs_print(struct roc_cpt *roc_cpt);
 int __roc_api roc_cpt_lfs_print(struct roc_cpt *roc_cpt);
 void __roc_api roc_cpt_iq_disable(struct roc_cpt_lf *lf);
 void __roc_api roc_cpt_iq_enable(struct roc_cpt_lf *lf);
+void __roc_api roc_cpt_cq_disable(struct roc_cpt_lf *lf);
+void __roc_api roc_cpt_cq_enable(struct roc_cpt_lf *lf);
 int __roc_api roc_cpt_lmtline_init(struct roc_cpt *roc_cpt, struct roc_cpt_lmtline *lmtline,
 				   int lf_id, bool is_dual);
 

drivers/common/cnxk/roc_cpt_priv.h

@@ -30,7 +30,8 @@ int cpt_lf_init(struct roc_cpt_lf *lf, bool skip_register_irq);
 void cpt_lf_fini(struct roc_cpt_lf *lf, bool skip_register_irq);
 int cpt_lf_register_irqs(struct roc_cpt_lf *lf, misc_irq_cb_t misc_cb, done_irq_cb_t done_cb);
 void cpt_lf_unregister_irqs(struct roc_cpt_lf *lf, misc_irq_cb_t misc_cb, done_irq_cb_t done_cb);
-void cpt_lf_cq_init(struct roc_cpt_lf *lf);
+int cpt_lf_cq_init(struct roc_cpt_lf *lf);
+void cpt_lf_cq_fini(struct roc_cpt_lf *lf);
 void cpt_lf_misc_irq(void *params);
 
 int cpt_lf_outb_cfg(struct dev *dev, uint16_t sso_pf_func, uint16_t nix_pf_func,

drivers/common/cnxk/roc_platform_base_symbols.c

@@ -50,6 +50,8 @@ RTE_EXPORT_INTERNAL_SYMBOL(roc_cpt_lf_ctx_reload)
 RTE_EXPORT_INTERNAL_SYMBOL(roc_cpt_lf_reset)
 RTE_EXPORT_INTERNAL_SYMBOL(roc_cpt_lf_fini)
 RTE_EXPORT_INTERNAL_SYMBOL(roc_cpt_dev_fini)
+RTE_EXPORT_INTERNAL_SYMBOL(roc_cpt_cq_disable)
+RTE_EXPORT_INTERNAL_SYMBOL(roc_cpt_cq_enable)
 RTE_EXPORT_INTERNAL_SYMBOL(roc_cpt_dev_clear)
 RTE_EXPORT_INTERNAL_SYMBOL(roc_cpt_eng_grp_add)
 RTE_EXPORT_INTERNAL_SYMBOL(roc_cpt_iq_disable)