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1// SPDX-License-Identifier: GPL-2.0-only2/*3 * Copyright (C) 2016 Cavium, Inc.4 */5 6#include <linux/interrupt.h>7#include <linux/module.h>8 9#include "cptvf.h"10 11#define DRV_NAME	"thunder-cptvf"12#define DRV_VERSION	"1.0"13 14struct cptvf_wqe {15	struct tasklet_struct twork;16	void *cptvf;17	u32 qno;18};19 20struct cptvf_wqe_info {21	struct cptvf_wqe vq_wqe[CPT_NUM_QS_PER_VF];22};23 24static void vq_work_handler(unsigned long data)25{26	struct cptvf_wqe_info *cwqe_info = (struct cptvf_wqe_info *)data;27	struct cptvf_wqe *cwqe = &cwqe_info->vq_wqe[0];28 29	vq_post_process(cwqe->cptvf, cwqe->qno);30}31 32static int init_worker_threads(struct cpt_vf *cptvf)33{34	struct pci_dev *pdev = cptvf->pdev;35	struct cptvf_wqe_info *cwqe_info;36	int i;37 38	cwqe_info = kzalloc(sizeof(*cwqe_info), GFP_KERNEL);39	if (!cwqe_info)40		return -ENOMEM;41 42	if (cptvf->nr_queues) {43		dev_info(&pdev->dev, "Creating VQ worker threads (%d)\n",44			 cptvf->nr_queues);45	}46 47	for (i = 0; i < cptvf->nr_queues; i++) {48		tasklet_init(&cwqe_info->vq_wqe[i].twork, vq_work_handler,49			     (u64)cwqe_info);50		cwqe_info->vq_wqe[i].qno = i;51		cwqe_info->vq_wqe[i].cptvf = cptvf;52	}53 54	cptvf->wqe_info = cwqe_info;55 56	return 0;57}58 59static void cleanup_worker_threads(struct cpt_vf *cptvf)60{61	struct cptvf_wqe_info *cwqe_info;62	struct pci_dev *pdev = cptvf->pdev;63	int i;64 65	cwqe_info = (struct cptvf_wqe_info *)cptvf->wqe_info;66	if (!cwqe_info)67		return;68 69	if (cptvf->nr_queues) {70		dev_info(&pdev->dev, "Cleaning VQ worker threads (%u)\n",71			 cptvf->nr_queues);72	}73 74	for (i = 0; i < cptvf->nr_queues; i++)75		tasklet_kill(&cwqe_info->vq_wqe[i].twork);76 77	kfree_sensitive(cwqe_info);78	cptvf->wqe_info = NULL;79}80 81static void free_pending_queues(struct pending_qinfo *pqinfo)82{83	int i;84	struct pending_queue *queue;85 86	for_each_pending_queue(pqinfo, queue, i) {87		if (!queue->head)88			continue;89 90		/* free single queue */91		kfree_sensitive((queue->head));92 93		queue->front = 0;94		queue->rear = 0;95 96		return;97	}98 99	pqinfo->qlen = 0;100	pqinfo->nr_queues = 0;101}102 103static int alloc_pending_queues(struct pending_qinfo *pqinfo, u32 qlen,104				u32 nr_queues)105{106	u32 i;107	int ret;108	struct pending_queue *queue = NULL;109 110	pqinfo->nr_queues = nr_queues;111	pqinfo->qlen = qlen;112 113	for_each_pending_queue(pqinfo, queue, i) {114		queue->head = kcalloc(qlen, sizeof(*queue->head), GFP_KERNEL);115		if (!queue->head) {116			ret = -ENOMEM;117			goto pending_qfail;118		}119 120		queue->front = 0;121		queue->rear = 0;122		atomic64_set((&queue->pending_count), (0));123 124		/* init queue spin lock */125		spin_lock_init(&queue->lock);126	}127 128	return 0;129 130pending_qfail:131	free_pending_queues(pqinfo);132 133	return ret;134}135 136static int init_pending_queues(struct cpt_vf *cptvf, u32 qlen, u32 nr_queues)137{138	struct pci_dev *pdev = cptvf->pdev;139	int ret;140 141	if (!nr_queues)142		return 0;143 144	ret = alloc_pending_queues(&cptvf->pqinfo, qlen, nr_queues);145	if (ret) {146		dev_err(&pdev->dev, "failed to setup pending queues (%u)\n",147			nr_queues);148		return ret;149	}150 151	return 0;152}153 154static void cleanup_pending_queues(struct cpt_vf *cptvf)155{156	struct pci_dev *pdev = cptvf->pdev;157 158	if (!cptvf->nr_queues)159		return;160 161	dev_info(&pdev->dev, "Cleaning VQ pending queue (%u)\n",162		 cptvf->nr_queues);163	free_pending_queues(&cptvf->pqinfo);164}165 166static void free_command_queues(struct cpt_vf *cptvf,167				struct command_qinfo *cqinfo)168{169	int i;170	struct command_queue *queue = NULL;171	struct command_chunk *chunk = NULL;172	struct pci_dev *pdev = cptvf->pdev;173	struct hlist_node *node;174 175	/* clean up for each queue */176	for (i = 0; i < cptvf->nr_queues; i++) {177		queue = &cqinfo->queue[i];178		if (hlist_empty(&cqinfo->queue[i].chead))179			continue;180 181		hlist_for_each_entry_safe(chunk, node, &cqinfo->queue[i].chead,182					  nextchunk) {183			dma_free_coherent(&pdev->dev, chunk->size,184					  chunk->head,185					  chunk->dma_addr);186			chunk->head = NULL;187			chunk->dma_addr = 0;188			hlist_del(&chunk->nextchunk);189			kfree_sensitive(chunk);190		}191 192		queue->nchunks = 0;193		queue->idx = 0;194	}195 196	/* common cleanup */197	cqinfo->cmd_size = 0;198}199 200static int alloc_command_queues(struct cpt_vf *cptvf,201				struct command_qinfo *cqinfo, size_t cmd_size,202				u32 qlen)203{204	int i;205	size_t q_size;206	struct command_queue *queue = NULL;207	struct pci_dev *pdev = cptvf->pdev;208 209	/* common init */210	cqinfo->cmd_size = cmd_size;211	/* Qsize in dwords, needed for SADDR config, 1-next chunk pointer */212	cptvf->qsize = min(qlen, cqinfo->qchunksize) *213			CPT_NEXT_CHUNK_PTR_SIZE + 1;214	/* Qsize in bytes to create space for alignment */215	q_size = qlen * cqinfo->cmd_size;216 217	/* per queue initialization */218	for (i = 0; i < cptvf->nr_queues; i++) {219		size_t c_size = 0;220		size_t rem_q_size = q_size;221		struct command_chunk *curr = NULL, *first = NULL, *last = NULL;222		u32 qcsize_bytes = cqinfo->qchunksize * cqinfo->cmd_size;223 224		queue = &cqinfo->queue[i];225		INIT_HLIST_HEAD(&cqinfo->queue[i].chead);226		do {227			curr = kzalloc(sizeof(*curr), GFP_KERNEL);228			if (!curr)229				goto cmd_qfail;230 231			c_size = (rem_q_size > qcsize_bytes) ? qcsize_bytes :232					rem_q_size;233			curr->head = dma_alloc_coherent(&pdev->dev,234							c_size + CPT_NEXT_CHUNK_PTR_SIZE,235							&curr->dma_addr,236							GFP_KERNEL);237			if (!curr->head) {238				dev_err(&pdev->dev, "Command Q (%d) chunk (%d) allocation failed\n",239					i, queue->nchunks);240				kfree(curr);241				goto cmd_qfail;242			}243 244			curr->size = c_size;245			if (queue->nchunks == 0) {246				hlist_add_head(&curr->nextchunk,247					       &cqinfo->queue[i].chead);248				first = curr;249			} else {250				hlist_add_behind(&curr->nextchunk,251						 &last->nextchunk);252			}253 254			queue->nchunks++;255			rem_q_size -= c_size;256			if (last)257				*((u64 *)(&last->head[last->size])) = (u64)curr->dma_addr;258 259			last = curr;260		} while (rem_q_size);261 262		/* Make the queue circular */263		/* Tie back last chunk entry to head */264		curr = first;265		*((u64 *)(&last->head[last->size])) = (u64)curr->dma_addr;266		queue->qhead = curr;267		spin_lock_init(&queue->lock);268	}269	return 0;270 271cmd_qfail:272	free_command_queues(cptvf, cqinfo);273	return -ENOMEM;274}275 276static int init_command_queues(struct cpt_vf *cptvf, u32 qlen)277{278	struct pci_dev *pdev = cptvf->pdev;279	int ret;280 281	/* setup AE command queues */282	ret = alloc_command_queues(cptvf, &cptvf->cqinfo, CPT_INST_SIZE,283				   qlen);284	if (ret) {285		dev_err(&pdev->dev, "failed to allocate AE command queues (%u)\n",286			cptvf->nr_queues);287		return ret;288	}289 290	return ret;291}292 293static void cleanup_command_queues(struct cpt_vf *cptvf)294{295	struct pci_dev *pdev = cptvf->pdev;296 297	if (!cptvf->nr_queues)298		return;299 300	dev_info(&pdev->dev, "Cleaning VQ command queue (%u)\n",301		 cptvf->nr_queues);302	free_command_queues(cptvf, &cptvf->cqinfo);303}304 305static void cptvf_sw_cleanup(struct cpt_vf *cptvf)306{307	cleanup_worker_threads(cptvf);308	cleanup_pending_queues(cptvf);309	cleanup_command_queues(cptvf);310}311 312static int cptvf_sw_init(struct cpt_vf *cptvf, u32 qlen, u32 nr_queues)313{314	struct pci_dev *pdev = cptvf->pdev;315	int ret = 0;316	u32 max_dev_queues = 0;317 318	max_dev_queues = CPT_NUM_QS_PER_VF;319	/* possible cpus */320	nr_queues = min_t(u32, nr_queues, max_dev_queues);321	cptvf->nr_queues = nr_queues;322 323	ret = init_command_queues(cptvf, qlen);324	if (ret) {325		dev_err(&pdev->dev, "Failed to setup command queues (%u)\n",326			nr_queues);327		return ret;328	}329 330	ret = init_pending_queues(cptvf, qlen, nr_queues);331	if (ret) {332		dev_err(&pdev->dev, "Failed to setup pending queues (%u)\n",333			nr_queues);334		goto setup_pqfail;335	}336 337	/* Create worker threads for BH processing */338	ret = init_worker_threads(cptvf);339	if (ret) {340		dev_err(&pdev->dev, "Failed to setup worker threads\n");341		goto init_work_fail;342	}343 344	return 0;345 346init_work_fail:347	cleanup_worker_threads(cptvf);348	cleanup_pending_queues(cptvf);349 350setup_pqfail:351	cleanup_command_queues(cptvf);352 353	return ret;354}355 356static void cptvf_free_irq_affinity(struct cpt_vf *cptvf, int vec)357{358	irq_set_affinity_hint(pci_irq_vector(cptvf->pdev, vec), NULL);359	free_cpumask_var(cptvf->affinity_mask[vec]);360}361 362static void cptvf_write_vq_ctl(struct cpt_vf *cptvf, bool val)363{364	union cptx_vqx_ctl vqx_ctl;365 366	vqx_ctl.u = cpt_read_csr64(cptvf->reg_base, CPTX_VQX_CTL(0, 0));367	vqx_ctl.s.ena = val;368	cpt_write_csr64(cptvf->reg_base, CPTX_VQX_CTL(0, 0), vqx_ctl.u);369}370 371void cptvf_write_vq_doorbell(struct cpt_vf *cptvf, u32 val)372{373	union cptx_vqx_doorbell vqx_dbell;374 375	vqx_dbell.u = cpt_read_csr64(cptvf->reg_base,376				     CPTX_VQX_DOORBELL(0, 0));377	vqx_dbell.s.dbell_cnt = val * 8; /* Num of Instructions * 8 words */378	cpt_write_csr64(cptvf->reg_base, CPTX_VQX_DOORBELL(0, 0),379			vqx_dbell.u);380}381 382static void cptvf_write_vq_inprog(struct cpt_vf *cptvf, u8 val)383{384	union cptx_vqx_inprog vqx_inprg;385 386	vqx_inprg.u = cpt_read_csr64(cptvf->reg_base, CPTX_VQX_INPROG(0, 0));387	vqx_inprg.s.inflight = val;388	cpt_write_csr64(cptvf->reg_base, CPTX_VQX_INPROG(0, 0), vqx_inprg.u);389}390 391static void cptvf_write_vq_done_numwait(struct cpt_vf *cptvf, u32 val)392{393	union cptx_vqx_done_wait vqx_dwait;394 395	vqx_dwait.u = cpt_read_csr64(cptvf->reg_base,396				     CPTX_VQX_DONE_WAIT(0, 0));397	vqx_dwait.s.num_wait = val;398	cpt_write_csr64(cptvf->reg_base, CPTX_VQX_DONE_WAIT(0, 0),399			vqx_dwait.u);400}401 402static void cptvf_write_vq_done_timewait(struct cpt_vf *cptvf, u16 time)403{404	union cptx_vqx_done_wait vqx_dwait;405 406	vqx_dwait.u = cpt_read_csr64(cptvf->reg_base,407				     CPTX_VQX_DONE_WAIT(0, 0));408	vqx_dwait.s.time_wait = time;409	cpt_write_csr64(cptvf->reg_base, CPTX_VQX_DONE_WAIT(0, 0),410			vqx_dwait.u);411}412 413static void cptvf_enable_swerr_interrupts(struct cpt_vf *cptvf)414{415	union cptx_vqx_misc_ena_w1s vqx_misc_ena;416 417	vqx_misc_ena.u = cpt_read_csr64(cptvf->reg_base,418					CPTX_VQX_MISC_ENA_W1S(0, 0));419	/* Set mbox(0) interupts for the requested vf */420	vqx_misc_ena.s.swerr = 1;421	cpt_write_csr64(cptvf->reg_base, CPTX_VQX_MISC_ENA_W1S(0, 0),422			vqx_misc_ena.u);423}424 425static void cptvf_enable_mbox_interrupts(struct cpt_vf *cptvf)426{427	union cptx_vqx_misc_ena_w1s vqx_misc_ena;428 429	vqx_misc_ena.u = cpt_read_csr64(cptvf->reg_base,430					CPTX_VQX_MISC_ENA_W1S(0, 0));431	/* Set mbox(0) interupts for the requested vf */432	vqx_misc_ena.s.mbox = 1;433	cpt_write_csr64(cptvf->reg_base, CPTX_VQX_MISC_ENA_W1S(0, 0),434			vqx_misc_ena.u);435}436 437static void cptvf_enable_done_interrupts(struct cpt_vf *cptvf)438{439	union cptx_vqx_done_ena_w1s vqx_done_ena;440 441	vqx_done_ena.u = cpt_read_csr64(cptvf->reg_base,442					CPTX_VQX_DONE_ENA_W1S(0, 0));443	/* Set DONE interrupt for the requested vf */444	vqx_done_ena.s.done = 1;445	cpt_write_csr64(cptvf->reg_base, CPTX_VQX_DONE_ENA_W1S(0, 0),446			vqx_done_ena.u);447}448 449static void cptvf_clear_dovf_intr(struct cpt_vf *cptvf)450{451	union cptx_vqx_misc_int vqx_misc_int;452 453	vqx_misc_int.u = cpt_read_csr64(cptvf->reg_base,454					CPTX_VQX_MISC_INT(0, 0));455	/* W1C for the VF */456	vqx_misc_int.s.dovf = 1;457	cpt_write_csr64(cptvf->reg_base, CPTX_VQX_MISC_INT(0, 0),458			vqx_misc_int.u);459}460 461static void cptvf_clear_irde_intr(struct cpt_vf *cptvf)462{463	union cptx_vqx_misc_int vqx_misc_int;464 465	vqx_misc_int.u = cpt_read_csr64(cptvf->reg_base,466					CPTX_VQX_MISC_INT(0, 0));467	/* W1C for the VF */468	vqx_misc_int.s.irde = 1;469	cpt_write_csr64(cptvf->reg_base, CPTX_VQX_MISC_INT(0, 0),470			vqx_misc_int.u);471}472 473static void cptvf_clear_nwrp_intr(struct cpt_vf *cptvf)474{475	union cptx_vqx_misc_int vqx_misc_int;476 477	vqx_misc_int.u = cpt_read_csr64(cptvf->reg_base,478					CPTX_VQX_MISC_INT(0, 0));479	/* W1C for the VF */480	vqx_misc_int.s.nwrp = 1;481	cpt_write_csr64(cptvf->reg_base,482			CPTX_VQX_MISC_INT(0, 0), vqx_misc_int.u);483}484 485static void cptvf_clear_mbox_intr(struct cpt_vf *cptvf)486{487	union cptx_vqx_misc_int vqx_misc_int;488 489	vqx_misc_int.u = cpt_read_csr64(cptvf->reg_base,490					CPTX_VQX_MISC_INT(0, 0));491	/* W1C for the VF */492	vqx_misc_int.s.mbox = 1;493	cpt_write_csr64(cptvf->reg_base, CPTX_VQX_MISC_INT(0, 0),494			vqx_misc_int.u);495}496 497static void cptvf_clear_swerr_intr(struct cpt_vf *cptvf)498{499	union cptx_vqx_misc_int vqx_misc_int;500 501	vqx_misc_int.u = cpt_read_csr64(cptvf->reg_base,502					CPTX_VQX_MISC_INT(0, 0));503	/* W1C for the VF */504	vqx_misc_int.s.swerr = 1;505	cpt_write_csr64(cptvf->reg_base, CPTX_VQX_MISC_INT(0, 0),506			vqx_misc_int.u);507}508 509static u64 cptvf_read_vf_misc_intr_status(struct cpt_vf *cptvf)510{511	return cpt_read_csr64(cptvf->reg_base, CPTX_VQX_MISC_INT(0, 0));512}513 514static irqreturn_t cptvf_misc_intr_handler(int irq, void *cptvf_irq)515{516	struct cpt_vf *cptvf = (struct cpt_vf *)cptvf_irq;517	struct pci_dev *pdev = cptvf->pdev;518	u64 intr;519 520	intr = cptvf_read_vf_misc_intr_status(cptvf);521	/*Check for MISC interrupt types*/522	if (likely(intr & CPT_VF_INTR_MBOX_MASK)) {523		dev_dbg(&pdev->dev, "Mailbox interrupt 0x%llx on CPT VF %d\n",524			intr, cptvf->vfid);525		cptvf_handle_mbox_intr(cptvf);526		cptvf_clear_mbox_intr(cptvf);527	} else if (unlikely(intr & CPT_VF_INTR_DOVF_MASK)) {528		cptvf_clear_dovf_intr(cptvf);529		/*Clear doorbell count*/530		cptvf_write_vq_doorbell(cptvf, 0);531		dev_err(&pdev->dev, "Doorbell overflow error interrupt 0x%llx on CPT VF %d\n",532			intr, cptvf->vfid);533	} else if (unlikely(intr & CPT_VF_INTR_IRDE_MASK)) {534		cptvf_clear_irde_intr(cptvf);535		dev_err(&pdev->dev, "Instruction NCB read error interrupt 0x%llx on CPT VF %d\n",536			intr, cptvf->vfid);537	} else if (unlikely(intr & CPT_VF_INTR_NWRP_MASK)) {538		cptvf_clear_nwrp_intr(cptvf);539		dev_err(&pdev->dev, "NCB response write error interrupt 0x%llx on CPT VF %d\n",540			intr, cptvf->vfid);541	} else if (unlikely(intr & CPT_VF_INTR_SERR_MASK)) {542		cptvf_clear_swerr_intr(cptvf);543		dev_err(&pdev->dev, "Software error interrupt 0x%llx on CPT VF %d\n",544			intr, cptvf->vfid);545	} else {546		dev_err(&pdev->dev, "Unhandled interrupt in CPT VF %d\n",547			cptvf->vfid);548	}549 550	return IRQ_HANDLED;551}552 553static inline struct cptvf_wqe *get_cptvf_vq_wqe(struct cpt_vf *cptvf,554						 int qno)555{556	struct cptvf_wqe_info *nwqe_info;557 558	if (unlikely(qno >= cptvf->nr_queues))559		return NULL;560	nwqe_info = (struct cptvf_wqe_info *)cptvf->wqe_info;561 562	return &nwqe_info->vq_wqe[qno];563}564 565static inline u32 cptvf_read_vq_done_count(struct cpt_vf *cptvf)566{567	union cptx_vqx_done vqx_done;568 569	vqx_done.u = cpt_read_csr64(cptvf->reg_base, CPTX_VQX_DONE(0, 0));570	return vqx_done.s.done;571}572 573static inline void cptvf_write_vq_done_ack(struct cpt_vf *cptvf,574					   u32 ackcnt)575{576	union cptx_vqx_done_ack vqx_dack_cnt;577 578	vqx_dack_cnt.u = cpt_read_csr64(cptvf->reg_base,579					CPTX_VQX_DONE_ACK(0, 0));580	vqx_dack_cnt.s.done_ack = ackcnt;581	cpt_write_csr64(cptvf->reg_base, CPTX_VQX_DONE_ACK(0, 0),582			vqx_dack_cnt.u);583}584 585static irqreturn_t cptvf_done_intr_handler(int irq, void *cptvf_irq)586{587	struct cpt_vf *cptvf = (struct cpt_vf *)cptvf_irq;588	struct pci_dev *pdev = cptvf->pdev;589	/* Read the number of completions */590	u32 intr = cptvf_read_vq_done_count(cptvf);591 592	if (intr) {593		struct cptvf_wqe *wqe;594 595		/* Acknowledge the number of596		 * scheduled completions for processing597		 */598		cptvf_write_vq_done_ack(cptvf, intr);599		wqe = get_cptvf_vq_wqe(cptvf, 0);600		if (unlikely(!wqe)) {601			dev_err(&pdev->dev, "No work to schedule for VF (%d)",602				cptvf->vfid);603			return IRQ_NONE;604		}605		tasklet_hi_schedule(&wqe->twork);606	}607 608	return IRQ_HANDLED;609}610 611static void cptvf_set_irq_affinity(struct cpt_vf *cptvf, int vec)612{613	struct pci_dev *pdev = cptvf->pdev;614	int cpu;615 616	if (!zalloc_cpumask_var(&cptvf->affinity_mask[vec],617				GFP_KERNEL)) {618		dev_err(&pdev->dev, "Allocation failed for affinity_mask for VF %d",619			cptvf->vfid);620		return;621	}622 623	cpu = cptvf->vfid % num_online_cpus();624	cpumask_set_cpu(cpumask_local_spread(cpu, cptvf->node),625			cptvf->affinity_mask[vec]);626	irq_set_affinity_hint(pci_irq_vector(pdev, vec),627			cptvf->affinity_mask[vec]);628}629 630static void cptvf_write_vq_saddr(struct cpt_vf *cptvf, u64 val)631{632	union cptx_vqx_saddr vqx_saddr;633 634	vqx_saddr.u = val;635	cpt_write_csr64(cptvf->reg_base, CPTX_VQX_SADDR(0, 0), vqx_saddr.u);636}637 638static void cptvf_device_init(struct cpt_vf *cptvf)639{640	u64 base_addr = 0;641 642	/* Disable the VQ */643	cptvf_write_vq_ctl(cptvf, 0);644	/* Reset the doorbell */645	cptvf_write_vq_doorbell(cptvf, 0);646	/* Clear inflight */647	cptvf_write_vq_inprog(cptvf, 0);648	/* Write VQ SADDR */649	/* TODO: for now only one queue, so hard coded */650	base_addr = (u64)(cptvf->cqinfo.queue[0].qhead->dma_addr);651	cptvf_write_vq_saddr(cptvf, base_addr);652	/* Configure timerhold / coalescence */653	cptvf_write_vq_done_timewait(cptvf, CPT_TIMER_THOLD);654	cptvf_write_vq_done_numwait(cptvf, 1);655	/* Enable the VQ */656	cptvf_write_vq_ctl(cptvf, 1);657	/* Flag the VF ready */658	cptvf->flags |= CPT_FLAG_DEVICE_READY;659}660 661static int cptvf_probe(struct pci_dev *pdev, const struct pci_device_id *ent)662{663	struct device *dev = &pdev->dev;664	struct cpt_vf *cptvf;665	int    err;666 667	cptvf = devm_kzalloc(dev, sizeof(*cptvf), GFP_KERNEL);668	if (!cptvf)669		return -ENOMEM;670 671	pci_set_drvdata(pdev, cptvf);672	cptvf->pdev = pdev;673	err = pci_enable_device(pdev);674	if (err) {675		dev_err(dev, "Failed to enable PCI device\n");676		pci_set_drvdata(pdev, NULL);677		return err;678	}679 680	err = pci_request_regions(pdev, DRV_NAME);681	if (err) {682		dev_err(dev, "PCI request regions failed 0x%x\n", err);683		goto cptvf_err_disable_device;684	}685	/* Mark as VF driver */686	cptvf->flags |= CPT_FLAG_VF_DRIVER;687	err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(48));688	if (err) {689		dev_err(dev, "Unable to get usable 48-bit DMA configuration\n");690		goto cptvf_err_release_regions;691	}692 693	/* MAP PF's configuration registers */694	cptvf->reg_base = pcim_iomap(pdev, 0, 0);695	if (!cptvf->reg_base) {696		dev_err(dev, "Cannot map config register space, aborting\n");697		err = -ENOMEM;698		goto cptvf_err_release_regions;699	}700 701	cptvf->node = dev_to_node(&pdev->dev);702	err = pci_alloc_irq_vectors(pdev, CPT_VF_MSIX_VECTORS,703			CPT_VF_MSIX_VECTORS, PCI_IRQ_MSIX);704	if (err < 0) {705		dev_err(dev, "Request for #%d msix vectors failed\n",706			CPT_VF_MSIX_VECTORS);707		goto cptvf_err_release_regions;708	}709 710	err = request_irq(pci_irq_vector(pdev, CPT_VF_INT_VEC_E_MISC),711			  cptvf_misc_intr_handler, 0, "CPT VF misc intr",712			  cptvf);713	if (err) {714		dev_err(dev, "Request misc irq failed");715		goto cptvf_free_vectors;716	}717 718	/* Enable mailbox interrupt */719	cptvf_enable_mbox_interrupts(cptvf);720	cptvf_enable_swerr_interrupts(cptvf);721 722	/* Check ready with PF */723	/* Gets chip ID / device Id from PF if ready */724	err = cptvf_check_pf_ready(cptvf);725	if (err) {726		dev_err(dev, "PF not responding to READY msg");727		goto cptvf_free_misc_irq;728	}729 730	/* CPT VF software resources initialization */731	cptvf->cqinfo.qchunksize = CPT_CMD_QCHUNK_SIZE;732	err = cptvf_sw_init(cptvf, CPT_CMD_QLEN, CPT_NUM_QS_PER_VF);733	if (err) {734		dev_err(dev, "cptvf_sw_init() failed");735		goto cptvf_free_misc_irq;736	}737	/* Convey VQ LEN to PF */738	err = cptvf_send_vq_size_msg(cptvf);739	if (err) {740		dev_err(dev, "PF not responding to QLEN msg");741		goto cptvf_free_misc_irq;742	}743 744	/* CPT VF device initialization */745	cptvf_device_init(cptvf);746	/* Send msg to PF to assign currnet Q to required group */747	cptvf->vfgrp = 1;748	err = cptvf_send_vf_to_grp_msg(cptvf);749	if (err) {750		dev_err(dev, "PF not responding to VF_GRP msg");751		goto cptvf_free_misc_irq;752	}753 754	cptvf->priority = 1;755	err = cptvf_send_vf_priority_msg(cptvf);756	if (err) {757		dev_err(dev, "PF not responding to VF_PRIO msg");758		goto cptvf_free_misc_irq;759	}760 761	err = request_irq(pci_irq_vector(pdev, CPT_VF_INT_VEC_E_DONE),762			  cptvf_done_intr_handler, 0, "CPT VF done intr",763			  cptvf);764	if (err) {765		dev_err(dev, "Request done irq failed\n");766		goto cptvf_free_misc_irq;767	}768 769	/* Enable mailbox interrupt */770	cptvf_enable_done_interrupts(cptvf);771 772	/* Set irq affinity masks */773	cptvf_set_irq_affinity(cptvf, CPT_VF_INT_VEC_E_MISC);774	cptvf_set_irq_affinity(cptvf, CPT_VF_INT_VEC_E_DONE);775 776	err = cptvf_send_vf_up(cptvf);777	if (err) {778		dev_err(dev, "PF not responding to UP msg");779		goto cptvf_free_irq_affinity;780	}781	err = cvm_crypto_init(cptvf);782	if (err) {783		dev_err(dev, "Algorithm register failed\n");784		goto cptvf_free_irq_affinity;785	}786	return 0;787 788cptvf_free_irq_affinity:789	cptvf_free_irq_affinity(cptvf, CPT_VF_INT_VEC_E_DONE);790	cptvf_free_irq_affinity(cptvf, CPT_VF_INT_VEC_E_MISC);791cptvf_free_misc_irq:792	free_irq(pci_irq_vector(pdev, CPT_VF_INT_VEC_E_MISC), cptvf);793cptvf_free_vectors:794	pci_free_irq_vectors(cptvf->pdev);795cptvf_err_release_regions:796	pci_release_regions(pdev);797cptvf_err_disable_device:798	pci_disable_device(pdev);799	pci_set_drvdata(pdev, NULL);800 801	return err;802}803 804static void cptvf_remove(struct pci_dev *pdev)805{806	struct cpt_vf *cptvf = pci_get_drvdata(pdev);807 808	if (!cptvf) {809		dev_err(&pdev->dev, "Invalid CPT-VF device\n");810		return;811	}812 813	/* Convey DOWN to PF */814	if (cptvf_send_vf_down(cptvf)) {815		dev_err(&pdev->dev, "PF not responding to DOWN msg");816	} else {817		cptvf_free_irq_affinity(cptvf, CPT_VF_INT_VEC_E_DONE);818		cptvf_free_irq_affinity(cptvf, CPT_VF_INT_VEC_E_MISC);819		free_irq(pci_irq_vector(pdev, CPT_VF_INT_VEC_E_DONE), cptvf);820		free_irq(pci_irq_vector(pdev, CPT_VF_INT_VEC_E_MISC), cptvf);821		pci_free_irq_vectors(cptvf->pdev);822		cptvf_sw_cleanup(cptvf);823		pci_set_drvdata(pdev, NULL);824		pci_release_regions(pdev);825		pci_disable_device(pdev);826		cvm_crypto_exit();827	}828}829 830static void cptvf_shutdown(struct pci_dev *pdev)831{832	cptvf_remove(pdev);833}834 835/* Supported devices */836static const struct pci_device_id cptvf_id_table[] = {837	{PCI_VDEVICE(CAVIUM, CPT_81XX_PCI_VF_DEVICE_ID), 0},838	{ 0, }  /* end of table */839};840 841static struct pci_driver cptvf_pci_driver = {842	.name = DRV_NAME,843	.id_table = cptvf_id_table,844	.probe = cptvf_probe,845	.remove = cptvf_remove,846	.shutdown = cptvf_shutdown,847};848 849module_pci_driver(cptvf_pci_driver);850 851MODULE_AUTHOR("George Cherian <george.cherian@cavium.com>");852MODULE_DESCRIPTION("Cavium Thunder CPT Virtual Function Driver");853MODULE_LICENSE("GPL v2");854MODULE_VERSION(DRV_VERSION);855MODULE_DEVICE_TABLE(pci, cptvf_id_table);856