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git.proxmox.com Git - mirror_ubuntu-eoan-kernel.git/blob - drivers/crypto/cavium/nitrox/nitrox_lib.c
1 // SPDX-License-Identifier: GPL-2.0
2 #include <linux/cpumask.h>
3 #include <linux/dma-mapping.h>
4 #include <linux/dmapool.h>
5 #include <linux/delay.h>
7 #include <linux/kernel.h>
8 #include <linux/module.h>
9 #include <linux/pci_regs.h>
10 #include <linux/vmalloc.h>
11 #include <linux/pci.h>
13 #include "nitrox_dev.h"
14 #include "nitrox_common.h"
15 #include "nitrox_req.h"
16 #include "nitrox_csr.h"
18 #define CRYPTO_CTX_SIZE 256
20 /* packet inuput ring alignments */
21 #define PKTIN_Q_ALIGN_BYTES 16
23 static int nitrox_cmdq_init(struct nitrox_cmdq
*cmdq
, int align_bytes
)
25 struct nitrox_device
*ndev
= cmdq
->ndev
;
27 cmdq
->qsize
= (ndev
->qlen
* cmdq
->instr_size
) + align_bytes
;
28 cmdq
->unalign_base
= dma_zalloc_coherent(DEV(ndev
), cmdq
->qsize
,
31 if (!cmdq
->unalign_base
)
34 cmdq
->dma
= PTR_ALIGN(cmdq
->unalign_dma
, align_bytes
);
35 cmdq
->base
= cmdq
->unalign_base
+ (cmdq
->dma
- cmdq
->unalign_dma
);
38 spin_lock_init(&cmdq
->cmd_qlock
);
39 spin_lock_init(&cmdq
->resp_qlock
);
40 spin_lock_init(&cmdq
->backlog_qlock
);
42 INIT_LIST_HEAD(&cmdq
->response_head
);
43 INIT_LIST_HEAD(&cmdq
->backlog_head
);
44 INIT_WORK(&cmdq
->backlog_qflush
, backlog_qflush_work
);
46 atomic_set(&cmdq
->pending_count
, 0);
47 atomic_set(&cmdq
->backlog_count
, 0);
51 static void nitrox_cmdq_reset(struct nitrox_cmdq
*cmdq
)
54 atomic_set(&cmdq
->pending_count
, 0);
55 atomic_set(&cmdq
->backlog_count
, 0);
58 static void nitrox_cmdq_cleanup(struct nitrox_cmdq
*cmdq
)
60 struct nitrox_device
*ndev
= cmdq
->ndev
;
62 if (!cmdq
->unalign_base
)
65 cancel_work_sync(&cmdq
->backlog_qflush
);
67 dma_free_coherent(DEV(ndev
), cmdq
->qsize
,
68 cmdq
->unalign_base
, cmdq
->unalign_dma
);
69 nitrox_cmdq_reset(cmdq
);
71 cmdq
->dbell_csr_addr
= NULL
;
72 cmdq
->compl_cnt_csr_addr
= NULL
;
73 cmdq
->unalign_base
= NULL
;
75 cmdq
->unalign_dma
= 0;
81 static void nitrox_free_pktin_queues(struct nitrox_device
*ndev
)
85 for (i
= 0; i
< ndev
->nr_queues
; i
++) {
86 struct nitrox_cmdq
*cmdq
= &ndev
->pkt_inq
[i
];
88 nitrox_cmdq_cleanup(cmdq
);
94 static int nitrox_alloc_pktin_queues(struct nitrox_device
*ndev
)
98 ndev
->pkt_inq
= kcalloc_node(ndev
->nr_queues
,
99 sizeof(struct nitrox_cmdq
),
100 GFP_KERNEL
, ndev
->node
);
104 for (i
= 0; i
< ndev
->nr_queues
; i
++) {
105 struct nitrox_cmdq
*cmdq
;
108 cmdq
= &ndev
->pkt_inq
[i
];
111 cmdq
->instr_size
= sizeof(struct nps_pkt_instr
);
113 /* packet input ring doorbell address */
114 offset
= NPS_PKT_IN_INSTR_BAOFF_DBELLX(i
);
115 cmdq
->dbell_csr_addr
= NITROX_CSR_ADDR(ndev
, offset
);
116 /* packet solicit port completion count address */
117 offset
= NPS_PKT_SLC_CNTSX(i
);
118 cmdq
->compl_cnt_csr_addr
= NITROX_CSR_ADDR(ndev
, offset
);
120 err
= nitrox_cmdq_init(cmdq
, PKTIN_Q_ALIGN_BYTES
);
127 nitrox_free_pktin_queues(ndev
);
131 static int create_crypto_dma_pool(struct nitrox_device
*ndev
)
135 /* Crypto context pool, 16 byte aligned */
136 size
= CRYPTO_CTX_SIZE
+ sizeof(struct ctx_hdr
);
137 ndev
->ctx_pool
= dma_pool_create("nitrox-context",
138 DEV(ndev
), size
, 16, 0);
145 static void destroy_crypto_dma_pool(struct nitrox_device
*ndev
)
150 dma_pool_destroy(ndev
->ctx_pool
);
151 ndev
->ctx_pool
= NULL
;
155 * crypto_alloc_context - Allocate crypto context from pool
156 * @ndev: NITROX Device
158 void *crypto_alloc_context(struct nitrox_device
*ndev
)
161 struct crypto_ctx_hdr
*chdr
;
165 chdr
= kmalloc(sizeof(*chdr
), GFP_KERNEL
);
169 vaddr
= dma_pool_zalloc(ndev
->ctx_pool
, GFP_KERNEL
, &dma
);
177 ctx
->pool
= ndev
->ctx_pool
;
179 ctx
->ctx_dma
= dma
+ sizeof(struct ctx_hdr
);
181 chdr
->pool
= ndev
->ctx_pool
;
189 * crypto_free_context - Free crypto context to pool
190 * @ctx: context to free
192 void crypto_free_context(void *ctx
)
194 struct crypto_ctx_hdr
*ctxp
;
200 dma_pool_free(ctxp
->pool
, ctxp
->vaddr
, ctxp
->dma
);
205 * nitrox_common_sw_init - allocate software resources.
206 * @ndev: NITROX device
208 * Allocates crypto context pools and command queues etc.
210 * Return: 0 on success, or a negative error code on error.
212 int nitrox_common_sw_init(struct nitrox_device
*ndev
)
216 /* per device crypto context pool */
217 err
= create_crypto_dma_pool(ndev
);
221 err
= nitrox_alloc_pktin_queues(ndev
);
223 destroy_crypto_dma_pool(ndev
);
229 * nitrox_common_sw_cleanup - free software resources.
230 * @ndev: NITROX device
232 void nitrox_common_sw_cleanup(struct nitrox_device
*ndev
)
234 nitrox_free_pktin_queues(ndev
);
235 destroy_crypto_dma_pool(ndev
);