diff options
Diffstat (limited to 'drivers')
57 files changed, 1610 insertions, 208 deletions
diff --git a/drivers/bluetooth/Makefile b/drivers/bluetooth/Makefile index b1fc29a697b7..80627187c8b6 100644 --- a/drivers/bluetooth/Makefile +++ b/drivers/bluetooth/Makefile @@ -40,5 +40,3 @@ hci_uart-$(CONFIG_BT_HCIUART_QCA) += hci_qca.o hci_uart-$(CONFIG_BT_HCIUART_AG6XX) += hci_ag6xx.o hci_uart-$(CONFIG_BT_HCIUART_MRVL) += hci_mrvl.o hci_uart-objs := $(hci_uart-y) - -ccflags-y += -D__CHECK_ENDIAN__ diff --git a/drivers/char/virtio_console.c b/drivers/char/virtio_console.c index 5649234b7316..8b00e79c2683 100644 --- a/drivers/char/virtio_console.c +++ b/drivers/char/virtio_console.c @@ -152,8 +152,8 @@ struct ports_device { spinlock_t c_ivq_lock; spinlock_t c_ovq_lock; - /* The current config space is stored here */ - struct virtio_console_config config; + /* max. number of ports this device can hold */ + u32 max_nr_ports; /* The virtio device we're associated with */ struct virtio_device *vdev; @@ -1649,11 +1649,11 @@ static void handle_control_message(struct virtio_device *vdev, break; } if (virtio32_to_cpu(vdev, cpkt->id) >= - portdev->config.max_nr_ports) { + portdev->max_nr_ports) { dev_warn(&portdev->vdev->dev, "Request for adding port with " "out-of-bound id %u, max. supported id: %u\n", - cpkt->id, portdev->config.max_nr_ports - 1); + cpkt->id, portdev->max_nr_ports - 1); break; } add_port(portdev, virtio32_to_cpu(vdev, cpkt->id)); @@ -1894,7 +1894,7 @@ static int init_vqs(struct ports_device *portdev) u32 i, j, nr_ports, nr_queues; int err; - nr_ports = portdev->config.max_nr_ports; + nr_ports = portdev->max_nr_ports; nr_queues = use_multiport(portdev) ? (nr_ports + 1) * 2 : 2; vqs = kmalloc(nr_queues * sizeof(struct virtqueue *), GFP_KERNEL); @@ -2047,13 +2047,13 @@ static int virtcons_probe(struct virtio_device *vdev) } multiport = false; - portdev->config.max_nr_ports = 1; + portdev->max_nr_ports = 1; /* Don't test MULTIPORT at all if we're rproc: not a valid feature! */ if (!is_rproc_serial(vdev) && virtio_cread_feature(vdev, VIRTIO_CONSOLE_F_MULTIPORT, struct virtio_console_config, max_nr_ports, - &portdev->config.max_nr_ports) == 0) { + &portdev->max_nr_ports) == 0) { multiport = true; } diff --git a/drivers/crypto/Kconfig b/drivers/crypto/Kconfig index 4d2b81f2b223..79564785ae30 100644 --- a/drivers/crypto/Kconfig +++ b/drivers/crypto/Kconfig @@ -555,4 +555,6 @@ config CRYPTO_DEV_ROCKCHIP source "drivers/crypto/chelsio/Kconfig" +source "drivers/crypto/virtio/Kconfig" + endif # CRYPTO_HW diff --git a/drivers/crypto/Makefile b/drivers/crypto/Makefile index ad7250fa1348..bc53cb833a06 100644 --- a/drivers/crypto/Makefile +++ b/drivers/crypto/Makefile @@ -32,3 +32,4 @@ obj-$(CONFIG_CRYPTO_DEV_VMX) += vmx/ obj-$(CONFIG_CRYPTO_DEV_SUN4I_SS) += sunxi-ss/ obj-$(CONFIG_CRYPTO_DEV_ROCKCHIP) += rockchip/ obj-$(CONFIG_CRYPTO_DEV_CHELSIO) += chelsio/ +obj-$(CONFIG_CRYPTO_DEV_VIRTIO) += virtio/ diff --git a/drivers/crypto/virtio/Kconfig b/drivers/crypto/virtio/Kconfig new file mode 100644 index 000000000000..d80f73366ae2 --- /dev/null +++ b/drivers/crypto/virtio/Kconfig @@ -0,0 +1,10 @@ +config CRYPTO_DEV_VIRTIO + tristate "VirtIO crypto driver" + depends on VIRTIO + select CRYPTO_AEAD + select CRYPTO_AUTHENC + select CRYPTO_BLKCIPHER + default m + help + This driver provides support for virtio crypto device. If you + choose 'M' here, this module will be called virtio_crypto. diff --git a/drivers/crypto/virtio/Makefile b/drivers/crypto/virtio/Makefile new file mode 100644 index 000000000000..dd342c947ff9 --- /dev/null +++ b/drivers/crypto/virtio/Makefile @@ -0,0 +1,5 @@ +obj-$(CONFIG_CRYPTO_DEV_VIRTIO) += virtio_crypto.o +virtio_crypto-objs := \ + virtio_crypto_algs.o \ + virtio_crypto_mgr.o \ + virtio_crypto_core.o diff --git a/drivers/crypto/virtio/virtio_crypto_algs.c b/drivers/crypto/virtio/virtio_crypto_algs.c new file mode 100644 index 000000000000..c2374df9abae --- /dev/null +++ b/drivers/crypto/virtio/virtio_crypto_algs.c @@ -0,0 +1,540 @@ + /* Algorithms supported by virtio crypto device + * + * Authors: Gonglei <arei.gonglei@huawei.com> + * + * Copyright 2016 HUAWEI TECHNOLOGIES CO., LTD. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see <http://www.gnu.org/licenses/>. + */ + +#include <linux/scatterlist.h> +#include <crypto/algapi.h> +#include <linux/err.h> +#include <crypto/scatterwalk.h> +#include <linux/atomic.h> + +#include <uapi/linux/virtio_crypto.h> +#include "virtio_crypto_common.h" + +/* + * The algs_lock protects the below global virtio_crypto_active_devs + * and crypto algorithms registion. + */ +static DEFINE_MUTEX(algs_lock); +static unsigned int virtio_crypto_active_devs; + +static u64 virtio_crypto_alg_sg_nents_length(struct scatterlist *sg) +{ + u64 total = 0; + + for (total = 0; sg; sg = sg_next(sg)) + total += sg->length; + + return total; +} + +static int +virtio_crypto_alg_validate_key(int key_len, uint32_t *alg) +{ + switch (key_len) { + case AES_KEYSIZE_128: + case AES_KEYSIZE_192: + case AES_KEYSIZE_256: + *alg = VIRTIO_CRYPTO_CIPHER_AES_CBC; + break; + default: + pr_err("virtio_crypto: Unsupported key length: %d\n", + key_len); + return -EINVAL; + } + return 0; +} + +static int virtio_crypto_alg_ablkcipher_init_session( + struct virtio_crypto_ablkcipher_ctx *ctx, + uint32_t alg, const uint8_t *key, + unsigned int keylen, + int encrypt) +{ + struct scatterlist outhdr, key_sg, inhdr, *sgs[3]; + unsigned int tmp; + struct virtio_crypto *vcrypto = ctx->vcrypto; + int op = encrypt ? VIRTIO_CRYPTO_OP_ENCRYPT : VIRTIO_CRYPTO_OP_DECRYPT; + int err; + unsigned int num_out = 0, num_in = 0; + + /* + * Avoid to do DMA from the stack, switch to using + * dynamically-allocated for the key + */ + uint8_t *cipher_key = kmalloc(keylen, GFP_ATOMIC); + + if (!cipher_key) + return -ENOMEM; + + memcpy(cipher_key, key, keylen); + + spin_lock(&vcrypto->ctrl_lock); + /* Pad ctrl header */ + vcrypto->ctrl.header.opcode = + cpu_to_le32(VIRTIO_CRYPTO_CIPHER_CREATE_SESSION); + vcrypto->ctrl.header.algo = cpu_to_le32(alg); + /* Set the default dataqueue id to 0 */ + vcrypto->ctrl.header.queue_id = 0; + + vcrypto->input.status = cpu_to_le32(VIRTIO_CRYPTO_ERR); + /* Pad cipher's parameters */ + vcrypto->ctrl.u.sym_create_session.op_type = + cpu_to_le32(VIRTIO_CRYPTO_SYM_OP_CIPHER); + vcrypto->ctrl.u.sym_create_session.u.cipher.para.algo = + vcrypto->ctrl.header.algo; + vcrypto->ctrl.u.sym_create_session.u.cipher.para.keylen = + cpu_to_le32(keylen); + vcrypto->ctrl.u.sym_create_session.u.cipher.para.op = + cpu_to_le32(op); + + sg_init_one(&outhdr, &vcrypto->ctrl, sizeof(vcrypto->ctrl)); + sgs[num_out++] = &outhdr; + + /* Set key */ + sg_init_one(&key_sg, cipher_key, keylen); + sgs[num_out++] = &key_sg; + + /* Return status and session id back */ + sg_init_one(&inhdr, &vcrypto->input, sizeof(vcrypto->input)); + sgs[num_out + num_in++] = &inhdr; + + err = virtqueue_add_sgs(vcrypto->ctrl_vq, sgs, num_out, + num_in, vcrypto, GFP_ATOMIC); + if (err < 0) { + spin_unlock(&vcrypto->ctrl_lock); + kzfree(cipher_key); + return err; + } + virtqueue_kick(vcrypto->ctrl_vq); + + /* + * Trapping into the hypervisor, so the request should be + * handled immediately. + */ + while (!virtqueue_get_buf(vcrypto->ctrl_vq, &tmp) && + !virtqueue_is_broken(vcrypto->ctrl_vq)) + cpu_relax(); + + if (le32_to_cpu(vcrypto->input.status) != VIRTIO_CRYPTO_OK) { + spin_unlock(&vcrypto->ctrl_lock); + pr_err("virtio_crypto: Create session failed status: %u\n", + le32_to_cpu(vcrypto->input.status)); + kzfree(cipher_key); + return -EINVAL; + } + + if (encrypt) + ctx->enc_sess_info.session_id = + le64_to_cpu(vcrypto->input.session_id); + else + ctx->dec_sess_info.session_id = + le64_to_cpu(vcrypto->input.session_id); + + spin_unlock(&vcrypto->ctrl_lock); + + kzfree(cipher_key); + return 0; +} + +static int virtio_crypto_alg_ablkcipher_close_session( + struct virtio_crypto_ablkcipher_ctx *ctx, + int encrypt) +{ + struct scatterlist outhdr, status_sg, *sgs[2]; + unsigned int tmp; + struct virtio_crypto_destroy_session_req *destroy_session; + struct virtio_crypto *vcrypto = ctx->vcrypto; + int err; + unsigned int num_out = 0, num_in = 0; + + spin_lock(&vcrypto->ctrl_lock); + vcrypto->ctrl_status.status = VIRTIO_CRYPTO_ERR; + /* Pad ctrl header */ + vcrypto->ctrl.header.opcode = + cpu_to_le32(VIRTIO_CRYPTO_CIPHER_DESTROY_SESSION); + /* Set the default virtqueue id to 0 */ + vcrypto->ctrl.header.queue_id = 0; + + destroy_session = &vcrypto->ctrl.u.destroy_session; + + if (encrypt) + destroy_session->session_id = + cpu_to_le64(ctx->enc_sess_info.session_id); + else + destroy_session->session_id = + cpu_to_le64(ctx->dec_sess_info.session_id); + + sg_init_one(&outhdr, &vcrypto->ctrl, sizeof(vcrypto->ctrl)); + sgs[num_out++] = &outhdr; + + /* Return status and session id back */ + sg_init_one(&status_sg, &vcrypto->ctrl_status.status, + sizeof(vcrypto->ctrl_status.status)); + sgs[num_out + num_in++] = &status_sg; + + err = virtqueue_add_sgs(vcrypto->ctrl_vq, sgs, num_out, + num_in, vcrypto, GFP_ATOMIC); + if (err < 0) { + spin_unlock(&vcrypto->ctrl_lock); + return err; + } + virtqueue_kick(vcrypto->ctrl_vq); + + while (!virtqueue_get_buf(vcrypto->ctrl_vq, &tmp) && + !virtqueue_is_broken(vcrypto->ctrl_vq)) + cpu_relax(); + + if (vcrypto->ctrl_status.status != VIRTIO_CRYPTO_OK) { + spin_unlock(&vcrypto->ctrl_lock); + pr_err("virtio_crypto: Close session failed status: %u, session_id: 0x%llx\n", + vcrypto->ctrl_status.status, + destroy_session->session_id); + + return -EINVAL; + } + spin_unlock(&vcrypto->ctrl_lock); + + return 0; +} + +static int virtio_crypto_alg_ablkcipher_init_sessions( + struct virtio_crypto_ablkcipher_ctx *ctx, + const uint8_t *key, unsigned int keylen) +{ + uint32_t alg; + int ret; + struct virtio_crypto *vcrypto = ctx->vcrypto; + + if (keylen > vcrypto->max_cipher_key_len) { + pr_err("virtio_crypto: the key is too long\n"); + goto bad_key; + } + + if (virtio_crypto_alg_validate_key(keylen, &alg)) + goto bad_key; + + /* Create encryption session */ + ret = virtio_crypto_alg_ablkcipher_init_session(ctx, + alg, key, keylen, 1); + if (ret) + return ret; + /* Create decryption session */ + ret = virtio_crypto_alg_ablkcipher_init_session(ctx, + alg, key, keylen, 0); + if (ret) { + virtio_crypto_alg_ablkcipher_close_session(ctx, 1); + return ret; + } + return 0; + +bad_key: + crypto_tfm_set_flags(ctx->tfm, CRYPTO_TFM_RES_BAD_KEY_LEN); + return -EINVAL; +} + +/* Note: kernel crypto API realization */ +static int virtio_crypto_ablkcipher_setkey(struct crypto_ablkcipher *tfm, + const uint8_t *key, + unsigned int keylen) +{ + struct virtio_crypto_ablkcipher_ctx *ctx = crypto_ablkcipher_ctx(tfm); + int ret; + + if (!ctx->vcrypto) { + /* New key */ + int node = virtio_crypto_get_current_node(); + struct virtio_crypto *vcrypto = + virtcrypto_get_dev_node(node); + if (!vcrypto) { + pr_err("virtio_crypto: Could not find a virtio device in the system"); + return -ENODEV; + } + + ctx->vcrypto = vcrypto; + } else { + /* Rekeying, we should close the created sessions previously */ + virtio_crypto_alg_ablkcipher_close_session(ctx, 1); + virtio_crypto_alg_ablkcipher_close_session(ctx, 0); + } + + ret = virtio_crypto_alg_ablkcipher_init_sessions(ctx, key, keylen); + if (ret) { + virtcrypto_dev_put(ctx->vcrypto); + ctx->vcrypto = NULL; + + return ret; + } + + return 0; +} + +static int +__virtio_crypto_ablkcipher_do_req(struct virtio_crypto_request *vc_req, + struct ablkcipher_request *req, + struct data_queue *data_vq, + __u8 op) +{ + struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req); + unsigned int ivsize = crypto_ablkcipher_ivsize(tfm); + struct virtio_crypto_ablkcipher_ctx *ctx = vc_req->ablkcipher_ctx; + struct virtio_crypto *vcrypto = ctx->vcrypto; + struct virtio_crypto_op_data_req *req_data; + int src_nents, dst_nents; + int err; + unsigned long flags; + struct scatterlist outhdr, iv_sg, status_sg, **sgs; + int i; + u64 dst_len; + unsigned int num_out = 0, num_in = 0; + int sg_total; + uint8_t *iv; + + src_nents = sg_nents_for_len(req->src, req->nbytes); + dst_nents = sg_nents(req->dst); + + pr_debug("virtio_crypto: Number of sgs (src_nents: %d, dst_nents: %d)\n", + src_nents, dst_nents); + + /* Why 3? outhdr + iv + inhdr */ + sg_total = src_nents + dst_nents + 3; + sgs = kzalloc_node(sg_total * sizeof(*sgs), GFP_ATOMIC, + dev_to_node(&vcrypto->vdev->dev)); + if (!sgs) + return -ENOMEM; + + req_data = kzalloc_node(sizeof(*req_data), GFP_ATOMIC, + dev_to_node(&vcrypto->vdev->dev)); + if (!req_data) { + kfree(sgs); + return -ENOMEM; + } + + vc_req->req_data = req_data; + vc_req->type = VIRTIO_CRYPTO_SYM_OP_CIPHER; + /* Head of operation */ + if (op) { + req_data->header.session_id = + cpu_to_le64(ctx->enc_sess_info.session_id); + req_data->header.opcode = + cpu_to_le32(VIRTIO_CRYPTO_CIPHER_ENCRYPT); + } else { + req_data->header.session_id = + cpu_to_le64(ctx->dec_sess_info.session_id); + req_data->header.opcode = + cpu_to_le32(VIRTIO_CRYPTO_CIPHER_DECRYPT); + } + req_data->u.sym_req.op_type = cpu_to_le32(VIRTIO_CRYPTO_SYM_OP_CIPHER); + req_data->u.sym_req.u.cipher.para.iv_len = cpu_to_le32(ivsize); + req_data->u.sym_req.u.cipher.para.src_data_len = + cpu_to_le32(req->nbytes); + + dst_len = virtio_crypto_alg_sg_nents_length(req->dst); + if (unlikely(dst_len > U32_MAX)) { + pr_err("virtio_crypto: The dst_len is beyond U32_MAX\n"); + err = -EINVAL; + goto free; + } + + pr_debug("virtio_crypto: src_len: %u, dst_len: %llu\n", + req->nbytes, dst_len); + + if (unlikely(req->nbytes + dst_len + ivsize + + sizeof(vc_req->status) > vcrypto->max_size)) { + pr_err("virtio_crypto: The length is too big\n"); + err = -EINVAL; + goto free; + } + + req_data->u.sym_req.u.cipher.para.dst_data_len = + cpu_to_le32((uint32_t)dst_len); + + /* Outhdr */ + sg_init_one(&outhdr, req_data, sizeof(*req_data)); + sgs[num_out++] = &outhdr; + + /* IV */ + + /* + * Avoid to do DMA from the stack, switch to using + * dynamically-allocated for the IV + */ + iv = kzalloc_node(ivsize, GFP_ATOMIC, + dev_to_node(&vcrypto->vdev->dev)); + if (!iv) { + err = -ENOMEM; + goto free; + } + memcpy(iv, req->info, ivsize); + sg_init_one(&iv_sg, iv, ivsize); + sgs[num_out++] = &iv_sg; + vc_req->iv = iv; + + /* Source data */ + for (i = 0; i < src_nents; i++) + sgs[num_out++] = &req->src[i]; + + /* Destination data */ + for (i = 0; i < dst_nents; i++) + sgs[num_out + num_in++] = &req->dst[i]; + + /* Status */ + sg_init_one(&status_sg, &vc_req->status, sizeof(vc_req->status)); + sgs[num_out + num_in++] = &status_sg; + + vc_req->sgs = sgs; + + spin_lock_irqsave(&data_vq->lock, flags); + err = virtqueue_add_sgs(data_vq->vq, sgs, num_out, + num_in, vc_req, GFP_ATOMIC); + virtqueue_kick(data_vq->vq); + spin_unlock_irqrestore(&data_vq->lock, flags); + if (unlikely(err < 0)) + goto free_iv; + + return 0; + +free_iv: + kzfree(iv); +free: + kzfree(req_data); + kfree(sgs); + return err; +} + +static int virtio_crypto_ablkcipher_encrypt(struct ablkcipher_request *req) +{ + struct crypto_ablkcipher *atfm = crypto_ablkcipher_reqtfm(req); + struct virtio_crypto_ablkcipher_ctx *ctx = crypto_ablkcipher_ctx(atfm); + struct virtio_crypto_request *vc_req = ablkcipher_request_ctx(req); + struct virtio_crypto *vcrypto = ctx->vcrypto; + int ret; + /* Use the first data virtqueue as default */ + struct data_queue *data_vq = &vcrypto->data_vq[0]; + + vc_req->ablkcipher_ctx = ctx; + vc_req->ablkcipher_req = req; + ret = __virtio_crypto_ablkcipher_do_req(vc_req, req, data_vq, 1); + if (ret < 0) { + pr_err("virtio_crypto: Encryption failed!\n"); + return ret; + } + + return -EINPROGRESS; +} + +static int virtio_crypto_ablkcipher_decrypt(struct ablkcipher_request *req) +{ + struct crypto_ablkcipher *atfm = crypto_ablkcipher_reqtfm(req); + struct virtio_crypto_ablkcipher_ctx *ctx = crypto_ablkcipher_ctx(atfm); + struct virtio_crypto_request *vc_req = ablkcipher_request_ctx(req); + struct virtio_crypto *vcrypto = ctx->vcrypto; + int ret; + /* Use the first data virtqueue as default */ + struct data_queue *data_vq = &vcrypto->data_vq[0]; + + vc_req->ablkcipher_ctx = ctx; + vc_req->ablkcipher_req = req; + + ret = __virtio_crypto_ablkcipher_do_req(vc_req, req, data_vq, 0); + if (ret < 0) { + pr_err("virtio_crypto: Decryption failed!\n"); + return ret; + } + + return -EINPROGRESS; +} + +static int virtio_crypto_ablkcipher_init(struct crypto_tfm *tfm) +{ + struct virtio_crypto_ablkcipher_ctx *ctx = crypto_tfm_ctx(tfm); + + tfm->crt_ablkcipher.reqsize = sizeof(struct virtio_crypto_request); + ctx->tfm = tfm; + + return 0; +} + +static void virtio_crypto_ablkcipher_exit(struct crypto_tfm *tfm) +{ + struct virtio_crypto_ablkcipher_ctx *ctx = crypto_tfm_ctx(tfm); + + if (!ctx->vcrypto) + return; + + virtio_crypto_alg_ablkcipher_close_session(ctx, 1); + virtio_crypto_alg_ablkcipher_close_session(ctx, 0); + virtcrypto_dev_put(ctx->vcrypto); + ctx->vcrypto = NULL; +} + +static struct crypto_alg virtio_crypto_algs[] = { { + .cra_name = "cbc(aes)", + .cra_driver_name = "virtio_crypto_aes_cbc", + .cra_priority = 501, + .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC, + .cra_blocksize = AES_BLOCK_SIZE, + .cra_ctxsize = sizeof(struct virtio_crypto_ablkcipher_ctx), + .cra_alignmask = 0, + .cra_module = THIS_MODULE, + .cra_type = &crypto_ablkcipher_type, + .cra_init = virtio_crypto_ablkcipher_init, + .cra_exit = virtio_crypto_ablkcipher_exit, + .cra_u = { + .ablkcipher = { + .setkey = virtio_crypto_ablkcipher_setkey, + .decrypt = virtio_crypto_ablkcipher_decrypt, + .encrypt = virtio_crypto_ablkcipher_encrypt, + .min_keysize = AES_MIN_KEY_SIZE, + .max_keysize = AES_MAX_KEY_SIZE, + .ivsize = AES_BLOCK_SIZE, + }, + }, +} }; + +int virtio_crypto_algs_register(void) +{ + int ret = 0; + + mutex_lock(&algs_lock); + if (++virtio_crypto_active_devs != 1) + goto unlock; + + ret = crypto_register_algs(virtio_crypto_algs, + ARRAY_SIZE(virtio_crypto_algs)); + if (ret) + virtio_crypto_active_devs--; + +unlock: + mutex_unlock(&algs_lock); + return ret; +} + +void virtio_crypto_algs_unregister(void) +{ + mutex_lock(&algs_lock); + if (--virtio_crypto_active_devs != 0) + goto unlock; + + crypto_unregister_algs(virtio_crypto_algs, + ARRAY_SIZE(virtio_crypto_algs)); + +unlock: + mutex_unlock(&algs_lock); +} diff --git a/drivers/crypto/virtio/virtio_crypto_common.h b/drivers/crypto/virtio/virtio_crypto_common.h new file mode 100644 index 000000000000..3d6566b02876 --- /dev/null +++ b/drivers/crypto/virtio/virtio_crypto_common.h @@ -0,0 +1,128 @@ +/* Common header for Virtio crypto device. + * + * Copyright 2016 HUAWEI TECHNOLOGIES CO., LTD. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see <http://www.gnu.org/licenses/>. + */ + +#ifndef _VIRTIO_CRYPTO_COMMON_H +#define _VIRTIO_CRYPTO_COMMON_H + +#include <linux/virtio.h> +#include <linux/crypto.h> +#include <linux/spinlock.h> +#include <crypto/aead.h> +#include <crypto/aes.h> +#include <crypto/authenc.h> + + +/* Internal representation of a data virtqueue */ +struct data_queue { + /* Virtqueue associated with this send _queue */ + struct virtqueue *vq; + + /* To protect the vq operations for the dataq */ + spinlock_t lock; + + /* Name of the tx queue: dataq.$index */ + char name[32]; +}; + +struct virtio_crypto { + struct virtio_device *vdev; + struct virtqueue *ctrl_vq; + struct data_queue *data_vq; + + /* To protect the vq operations for the controlq */ + spinlock_t ctrl_lock; + + /* Maximum of data queues supported by the device */ + u32 max_data_queues; + + /* Number of queue currently used by the driver */ + u32 curr_queue; + + /* Maximum length of cipher key */ + u32 max_cipher_key_len; + /* Maximum length of authenticated key */ + u32 max_auth_key_len; + /* Maximum size of per request */ + u64 max_size; + + /* Control VQ buffers: protected by the ctrl_lock */ + struct virtio_crypto_op_ctrl_req ctrl; + struct virtio_crypto_session_input input; + struct virtio_crypto_inhdr ctrl_status; + + unsigned long status; + atomic_t ref_count; + struct list_head list; + struct module *owner; + uint8_t dev_id; + + /* Does the affinity hint is set for virtqueues? */ + bool affinity_hint_set; +}; + +struct virtio_crypto_sym_session_info { + /* Backend session id, which come from the host side */ + __u64 session_id; +}; + +struct virtio_crypto_ablkcipher_ctx { + struct virtio_crypto *vcrypto; + struct crypto_tfm *tfm; + + struct virtio_crypto_sym_session_info enc_sess_info; + struct virtio_crypto_sym_session_info dec_sess_info; +}; + +struct virtio_crypto_request { + /* Cipher or aead */ + uint32_t type; + uint8_t status; + struct virtio_crypto_ablkcipher_ctx *ablkcipher_ctx; + struct ablkcipher_request *ablkcipher_req; + struct virtio_crypto_op_data_req *req_data; + struct scatterlist **sgs; + uint8_t *iv; +}; + +int virtcrypto_devmgr_add_dev(struct virtio_crypto *vcrypto_dev); +struct list_head *virtcrypto_devmgr_get_head(void); +void virtcrypto_devmgr_rm_dev(struct virtio_crypto *vcrypto_dev); +struct virtio_crypto *virtcrypto_devmgr_get_first(void); +int virtcrypto_dev_in_use(struct virtio_crypto *vcrypto_dev); +int virtcrypto_dev_get(struct virtio_crypto *vcrypto_dev); +void virtcrypto_dev_put(struct virtio_crypto *vcrypto_dev); +int virtcrypto_dev_started(struct virtio_crypto *vcrypto_dev); +struct virtio_crypto *virtcrypto_get_dev_node(int node); +int virtcrypto_dev_start(struct virtio_crypto *vcrypto); +void virtcrypto_dev_stop(struct virtio_crypto *vcrypto); + +static inline int virtio_crypto_get_current_node(void) +{ + int cpu, node; + + cpu = get_cpu(); + node = topology_physical_package_id(cpu); + put_cpu(); + + return node; +} + +int virtio_crypto_algs_register(void); +void virtio_crypto_algs_unregister(void); + +#endif /* _VIRTIO_CRYPTO_COMMON_H */ diff --git a/drivers/crypto/virtio/virtio_crypto_core.c b/drivers/crypto/virtio/virtio_crypto_core.c new file mode 100644 index 000000000000..fe70ec823b27 --- /dev/null +++ b/drivers/crypto/virtio/virtio_crypto_core.c @@ -0,0 +1,476 @@ + /* Driver for Virtio crypto device. + * + * Copyright 2016 HUAWEI TECHNOLOGIES CO., LTD. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see <http://www.gnu.org/licenses/>. + */ + +#include <linux/err.h> +#include <linux/module.h> +#include <linux/virtio_config.h> +#include <linux/cpu.h> + +#include <uapi/linux/virtio_crypto.h> +#include "virtio_crypto_common.h" + + +static void +virtcrypto_clear_request(struct virtio_crypto_request *vc_req) +{ + if (vc_req) { + kzfree(vc_req->iv); + kzfree(vc_req->req_data); + kfree(vc_req->sgs); + } +} + +static void virtcrypto_dataq_callback(struct virtqueue *vq) +{ + struct virtio_crypto *vcrypto = vq->vdev->priv; + struct virtio_crypto_request *vc_req; + unsigned long flags; + unsigned int len; + struct ablkcipher_request *ablk_req; + int error; + unsigned int qid = vq->index; + + spin_lock_irqsave(&vcrypto->data_vq[qid].lock, flags); + do { + virtqueue_disable_cb(vq); + while ((vc_req = virtqueue_get_buf(vq, &len)) != NULL) { + if (vc_req->type == VIRTIO_CRYPTO_SYM_OP_CIPHER) { + switch (vc_req->status) { + case VIRTIO_CRYPTO_OK: + error = 0; + break; + case VIRTIO_CRYPTO_INVSESS: + case VIRTIO_CRYPTO_ERR: + error = -EINVAL; + break; + case VIRTIO_CRYPTO_BADMSG: + error = -EBADMSG; + break; + default: + error = -EIO; + break; + } + ablk_req = vc_req->ablkcipher_req; + virtcrypto_clear_request(vc_req); + + spin_unlock_irqrestore( + &vcrypto->data_vq[qid].lock, flags); + /* Finish the encrypt or decrypt process */ + ablk_req->base.complete(&ablk_req->base, error); + spin_lock_irqsave( + &vcrypto->data_vq[qid].lock, flags); + } + } + } while (!virtqueue_enable_cb(vq)); + spin_unlock_irqrestore(&vcrypto->data_vq[qid].lock, flags); +} + +static int virtcrypto_find_vqs(struct virtio_crypto *vi) +{ + vq_callback_t **callbacks; + struct virtqueue **vqs; + int ret = -ENOMEM; + int i, total_vqs; + const char **names; + + /* + * We expect 1 data virtqueue, followed by + * possible N-1 data queues used in multiqueue mode, + * followed by control vq. + */ + total_vqs = vi->max_data_queues + 1; + + /* Allocate space for find_vqs parameters */ + vqs = kcalloc(total_vqs, sizeof(*vqs), GFP_KERNEL); + if (!vqs) + goto err_vq; + callbacks = kcalloc(total_vqs, sizeof(*callbacks), GFP_KERNEL); + if (!callbacks) + goto err_callback; + names = kcalloc(total_vqs, sizeof(*names), GFP_KERNEL); + if (!names) + goto err_names; + + /* Parameters for control virtqueue */ + callbacks[total_vqs - 1] = NULL; + names[total_vqs - 1] = "controlq"; + + /* Allocate/initialize parameters for data virtqueues */ + for (i = 0; i < vi->max_data_queues; i++) { + callbacks[i] = virtcrypto_dataq_callback; + snprintf(vi->data_vq[i].name, sizeof(vi->data_vq[i].name), + "dataq.%d", i); + names[i] = vi->data_vq[i].name; + } + + ret = vi->vdev->config->find_vqs(vi->vdev, total_vqs, vqs, callbacks, + names); + if (ret) + goto err_find; + + vi->ctrl_vq = vqs[total_vqs - 1]; + + for (i = 0; i < vi->max_data_queues; i++) { + spin_lock_init(&vi->data_vq[i].lock); + vi->data_vq[i].vq = vqs[i]; + } + + kfree(names); + kfree(callbacks); + kfree(vqs); + + return 0; + +err_find: + kfree(names); +err_names: + kfree(callbacks); +err_callback: + kfree(vqs); +err_vq: + return ret; +} + +static int virtcrypto_alloc_queues(struct virtio_crypto *vi) +{ + vi->data_vq = kcalloc(vi->max_data_queues, sizeof(*vi->data_vq), + GFP_KERNEL); + if (!vi->data_vq) + return -ENOMEM; + + return 0; +} + +static void virtcrypto_clean_affinity(struct virtio_crypto *vi, long hcpu) +{ + int i; + + if (vi->affinity_hint_set) { + for (i = 0; i < vi->max_data_queues; i++) + virtqueue_set_affinity(vi->data_vq[i].vq, -1); + + vi->affinity_hint_set = false; + } +} + +static void virtcrypto_set_affinity(struct virtio_crypto *vcrypto) +{ + int i = 0; + int cpu; + + /* + * In single queue mode, we don't set the cpu affinity. + */ + if (vcrypto->curr_queue == 1 || vcrypto->max_data_queues == 1) { + virtcrypto_clean_affinity(vcrypto, -1); + return; + } + + /* + * In multiqueue mode, we let the queue to be private to one cpu + * by setting the affinity hint to eliminate the contention. + * + * TODO: adds cpu hotplug support by register cpu notifier. + * + */ + for_each_online_cpu(cpu) { + virtqueue_set_affinity(vcrypto->data_vq[i].vq, cpu); + if (++i >= vcrypto->max_data_queues) + break; + } + + vcrypto->affinity_hint_set = true; +} + +static void virtcrypto_free_queues(struct virtio_crypto *vi) +{ + kfree(vi->data_vq); +} + +static int virtcrypto_init_vqs(struct virtio_crypto *vi) +{ + int ret; + + /* Allocate send & receive queues */ + ret = virtcrypto_alloc_queues(vi); + if (ret) + goto err; + + ret = virtcrypto_find_vqs(vi); + if (ret) + goto err_free; + + get_online_cpus(); + virtcrypto_set_affinity(vi); + put_online_cpus(); + + return 0; + +err_free: + virtcrypto_free_queues(vi); +err: + return ret; +} + +static int virtcrypto_update_status(struct virtio_crypto *vcrypto) +{ + u32 status; + int err; + + virtio_cread(vcrypto->vdev, + struct virtio_crypto_config, status, &status); + + /* + * Unknown status bits would be a host error and the driver + * should consider the device to be broken. + */ + if (status & (~VIRTIO_CRYPTO_S_HW_READY)) { + dev_warn(&vcrypto->vdev->dev, + "Unknown status bits: 0x%x\n", status); + + virtio_break_device(vcrypto->vdev); + return -EPERM; + } + + if (vcrypto->status == status) + return 0; + + vcrypto->status = status; + + if (vcrypto->status & VIRTIO_CRYPTO_S_HW_READY) { + err = virtcrypto_dev_start(vcrypto); + if (err) { + dev_err(&vcrypto->vdev->dev, + "Failed to start virtio crypto device.\n"); + + return -EPERM; + } + dev_info(&vcrypto->vdev->dev, "Accelerator is ready\n"); + } else { + virtcrypto_dev_stop(vcrypto); + dev_info(&vcrypto->vdev->dev, "Accelerator is not ready\n"); + } + + return 0; +} + +static void virtcrypto_del_vqs(struct virtio_crypto *vcrypto) +{ + struct virtio_device *vdev = vcrypto->vdev; + + virtcrypto_clean_affinity(vcrypto, -1); + + vdev->config->del_vqs(vdev); + + virtcrypto_free_queues(vcrypto); +} + +static int virtcrypto_probe(struct virtio_device *vdev) +{ + int err = -EFAULT; + struct virtio_crypto *vcrypto; + u32 max_data_queues = 0, max_cipher_key_len = 0; + u32 max_auth_key_len = 0; + u64 max_size = 0; + + if (!virtio_has_feature(vdev, VIRTIO_F_VERSION_1)) + return -ENODEV; + + if (!vdev->config->get) { + dev_err(&vdev->dev, "%s failure: config access disabled\n", + __func__); + return -EINVAL; + } + + if (num_possible_nodes() > 1 && dev_to_node(&vdev->dev) < 0) { + /* + * If the accelerator is connected to a node with no memory + * there is no point in using the accelerator since the remote + * memory transaction will be very slow. + */ + dev_err(&vdev->dev, "Invalid NUMA configuration.\n"); + return -EINVAL; + } + + vcrypto = kzalloc_node(sizeof(*vcrypto), GFP_KERNEL, + dev_to_node(&vdev->dev)); + if (!vcrypto) + return -ENOMEM; + + virtio_cread(vdev, struct virtio_crypto_config, + max_dataqueues, &max_data_queues); + if (max_data_queues < 1) + max_data_queues = 1; + + virtio_cread(vdev, struct virtio_crypto_config, + max_cipher_key_len, &max_cipher_key_len); + virtio_cread(vdev, struct virtio_crypto_config, + max_auth_key_len, &max_auth_key_len); + virtio_cread(vdev, struct virtio_crypto_config, + max_size, &max_size); + + /* Add virtio crypto device to global table */ + err = virtcrypto_devmgr_add_dev(vcrypto); + if (err) { + dev_err(&vdev->dev, "Failed to add new virtio crypto device.\n"); + goto free; + } + vcrypto->owner = THIS_MODULE; + vcrypto = vdev->priv = vcrypto; + vcrypto->vdev = vdev; + + spin_lock_init(&vcrypto->ctrl_lock); + + /* Use single data queue as default */ + vcrypto->curr_queue = 1; + vcrypto->max_data_queues = max_data_queues; + vcrypto->max_cipher_key_len = max_cipher_key_len; + vcrypto->max_auth_key_len = max_auth_key_len; + vcrypto->max_size = max_size; + + dev_info(&vdev->dev, + "max_queues: %u, max_cipher_key_len: %u, max_auth_key_len: %u, max_size 0x%llx\n", + vcrypto->max_data_queues, + vcrypto->max_cipher_key_len, + vcrypto->max_auth_key_len, + vcrypto->max_size); + + err = virtcrypto_init_vqs(vcrypto); + if (err) { + dev_err(&vdev->dev, "Failed to initialize vqs.\n"); + goto free_dev; + } + virtio_device_ready(vdev); + + err = virtcrypto_update_status(vcrypto); + if (err) + goto free_vqs; + + return 0; + +free_vqs: + vcrypto->vdev->config->reset(vdev); + virtcrypto_del_vqs(vcrypto); +free_dev: + virtcrypto_devmgr_rm_dev(vcrypto); +free: + kfree(vcrypto); + return err; +} + +static void virtcrypto_free_unused_reqs(struct virtio_crypto *vcrypto) +{ + struct virtio_crypto_request *vc_req; + int i; + struct virtqueue *vq; + + for (i = 0; i < vcrypto->max_data_queues; i++) { + vq = vcrypto->data_vq[i].vq; + while ((vc_req = virtqueue_detach_unused_buf(vq)) != NULL) { + kfree(vc_req->req_data); + kfree(vc_req->sgs); + } + } +} + +static void virtcrypto_remove(struct virtio_device *vdev) +{ + struct virtio_crypto *vcrypto = vdev->priv; + + dev_info(&vdev->dev, "Start virtcrypto_remove.\n"); + + if (virtcrypto_dev_started(vcrypto)) + virtcrypto_dev_stop(vcrypto); + vdev->config->reset(vdev); + virtcrypto_free_unused_reqs(vcrypto); + virtcrypto_del_vqs(vcrypto); + virtcrypto_devmgr_rm_dev(vcrypto); + kfree(vcrypto); +} + +static void virtcrypto_config_changed(struct virtio_device *vdev) +{ + struct virtio_crypto *vcrypto = vdev->priv; + + virtcrypto_update_status(vcrypto); +} + +#ifdef CONFIG_PM_SLEEP +static int virtcrypto_freeze(struct virtio_device *vdev) +{ + struct virtio_crypto *vcrypto = vdev->priv; + + vdev->config->reset(vdev); + virtcrypto_free_unused_reqs(vcrypto); + if (virtcrypto_dev_started(vcrypto)) + virtcrypto_dev_stop(vcrypto); + + virtcrypto_del_vqs(vcrypto); + return 0; +} + +static int virtcrypto_restore(struct virtio_device *vdev) +{ + struct virtio_crypto *vcrypto = vdev->priv; + int err; + + err = virtcrypto_init_vqs(vcrypto); + if (err) + return err; + + virtio_device_ready(vdev); + err = virtcrypto_dev_start(vcrypto); + if (err) { + dev_err(&vdev->dev, "Failed to start virtio crypto device.\n"); + return -EFAULT; + } + + return 0; +} +#endif + +static unsigned int features[] = { + /* none */ +}; + +static struct virtio_device_id id_table[] = { + { VIRTIO_ID_CRYPTO, VIRTIO_DEV_ANY_ID }, + { 0 }, +}; + +static struct virtio_driver virtio_crypto_driver = { + .driver.name = KBUILD_MODNAME, + .driver.owner = THIS_MODULE, + .feature_table = features, + .feature_table_size = ARRAY_SIZE(features), + .id_table = id_table, + .probe = virtcrypto_probe, + .remove = virtcrypto_remove, + .config_changed = virtcrypto_config_changed, +#ifdef CONFIG_PM_SLEEP + .freeze = virtcrypto_freeze, + .restore = virtcrypto_restore, +#endif +}; + +module_virtio_driver(virtio_crypto_driver); + +MODULE_DEVICE_TABLE(virtio, id_table); +MODULE_DESCRIPTION("virtio crypto device driver"); +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Gonglei <arei.gonglei@huawei.com>"); diff --git a/drivers/crypto/virtio/virtio_crypto_mgr.c b/drivers/crypto/virtio/virtio_crypto_mgr.c new file mode 100644 index 000000000000..a69ff71de2c4 --- /dev/null +++ b/drivers/crypto/virtio/virtio_crypto_mgr.c @@ -0,0 +1,264 @@ + /* Management for virtio crypto devices (refer to adf_dev_mgr.c) + * + * Copyright 2016 HUAWEI TECHNOLOGIES CO., LTD. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see <http://www.gnu.org/licenses/>. + */ + +#include <linux/mutex.h> +#include <linux/list.h> +#include <linux/module.h> + +#include <uapi/linux/virtio_crypto.h> +#include "virtio_crypto_common.h" + +static LIST_HEAD(virtio_crypto_table); +static uint32_t num_devices; + +/* The table_lock protects the above global list and num_devices */ +static DEFINE_MUTEX(table_lock); + +#define VIRTIO_CRYPTO_MAX_DEVICES 32 + + +/* + * virtcrypto_devmgr_add_dev() - Add vcrypto_dev to the acceleration + * framework. + * @vcrypto_dev: Pointer to virtio crypto device. + * + * Function adds virtio crypto device to the global list. + * To be used by virtio crypto device specific drivers. + * + * Return: 0 on success, error code othewise. + */ +int virtcrypto_devmgr_add_dev(struct virtio_crypto *vcrypto_dev) +{ + struct list_head *itr; + + mutex_lock(&table_lock); + if (num_devices == VIRTIO_CRYPTO_MAX_DEVICES) { + pr_info("virtio_crypto: only support up to %d devices\n", + VIRTIO_CRYPTO_MAX_DEVICES); + mutex_unlock(&table_lock); + return -EFAULT; + } + + list_for_each(itr, &virtio_crypto_table) { + struct virtio_crypto *ptr = + list_entry(itr, struct virtio_crypto, list); + + if (ptr == vcrypto_dev) { + mutex_unlock(&table_lock); + return -EEXIST; + } + } + atomic_set(&vcrypto_dev->ref_count, 0); + list_add_tail(&vcrypto_dev->list, &virtio_crypto_table); + vcrypto_dev->dev_id = num_devices++; + mutex_unlock(&table_lock); + return 0; +} + +struct list_head *virtcrypto_devmgr_get_head(void) +{ + return &virtio_crypto_table; +} + +/* + * virtcrypto_devmgr_rm_dev() - Remove vcrypto_dev from the acceleration + * framework. + * @vcrypto_dev: Pointer to virtio crypto device. + * + * Function removes virtio crypto device from the acceleration framework. + * To be used by virtio crypto device specific drivers. + * + * Return: void + */ +void virtcrypto_devmgr_rm_dev(struct virtio_crypto *vcrypto_dev) +{ + mutex_lock(&table_lock); + list_del(&vcrypto_dev->list); + num_devices--; + mutex_unlock(&table_lock); +} + +/* + * virtcrypto_devmgr_get_first() + * + * Function returns the first virtio crypto device from the acceleration + * framework. + * + * To be used by virtio crypto device specific drivers. + * + * Return: pointer to vcrypto_dev or NULL if not found. + */ +struct virtio_crypto *virtcrypto_devmgr_get_first(void) +{ + struct virtio_crypto *dev = NULL; + + mutex_lock(&table_lock); + if (!list_empty(&virtio_crypto_table)) + dev = list_first_entry(&virtio_crypto_table, + struct virtio_crypto, + list); + mutex_unlock(&table_lock); + return dev; +} + +/* + * virtcrypto_dev_in_use() - Check whether vcrypto_dev is currently in use + * @vcrypto_dev: Pointer to virtio crypto device. + * + * To be used by virtio crypto device specific drivers. + * + * Return: 1 when device is in use, 0 otherwise. + */ +int virtcrypto_dev_in_use(struct virtio_crypto *vcrypto_dev) +{ + return atomic_read(&vcrypto_dev->ref_count) != 0; +} + +/* + * virtcrypto_dev_get() - Increment vcrypto_dev reference count + * @vcrypto_dev: Pointer to virtio crypto device. + * + * Increment the vcrypto_dev refcount and if this is the first time + * incrementing it during this period the vcrypto_dev is in use, + * increment the module refcount too. + * To be used by virtio crypto device specific drivers. + * + * Return: 0 when successful, EFAULT when fail to bump module refcount + */ +int virtcrypto_dev_get(struct virtio_crypto *vcrypto_dev) +{ + if (atomic_add_return(1, &vcrypto_dev->ref_count) == 1) + if (!try_module_get(vcrypto_dev->owner)) + return -EFAULT; + return 0; +} + +/* + * virtcrypto_dev_put() - Decrement vcrypto_dev reference count + * @vcrypto_dev: Pointer to virtio crypto device. + * + * Decrement the vcrypto_dev refcount and if this is the last time + * decrementing it during this period the vcrypto_dev is in use, + * decrement the module refcount too. + * To be used by virtio crypto device specific drivers. + * + * Return: void + */ +void virtcrypto_dev_put(struct virtio_crypto *vcrypto_dev) +{ + if (atomic_sub_return(1, &vcrypto_dev->ref_count) == 0) + module_put(vcrypto_dev->owner); +} + +/* + * virtcrypto_dev_started() - Check whether device has started + * @vcrypto_dev: Pointer to virtio crypto device. + * + * To be used by virtio crypto device specific drivers. + * + * Return: 1 when the device has started, 0 otherwise + */ +int virtcrypto_dev_started(struct virtio_crypto *vcrypto_dev) +{ + return (vcrypto_dev->status & VIRTIO_CRYPTO_S_HW_READY); +} + +/* + * virtcrypto_get_dev_node() - Get vcrypto_dev on the node. + * @node: Node id the driver works. + * + * Function returns the virtio crypto device used fewest on the node. + * + * To be used by virtio crypto device specific drivers. + * + * Return: pointer to vcrypto_dev or NULL if not found. + */ +struct virtio_crypto *virtcrypto_get_dev_node(int node) +{ + struct virtio_crypto *vcrypto_dev = NULL, *tmp_dev; + unsigned long best = ~0; + unsigned long ctr; + + mutex_lock(&table_lock); + list_for_each_entry(tmp_dev, virtcrypto_devmgr_get_head(), list) { + + if ((node == dev_to_node(&tmp_dev->vdev->dev) || + dev_to_node(&tmp_dev->vdev->dev) < 0) && + virtcrypto_dev_started(tmp_dev)) { + ctr = atomic_read(&tmp_dev->ref_count); + if (best > ctr) { + vcrypto_dev = tmp_dev; + best = ctr; + } + } + } + + if (!vcrypto_dev) { + pr_info("virtio_crypto: Could not find a device on node %d\n", + node); + /* Get any started device */ + list_for_each_entry(tmp_dev, + virtcrypto_devmgr_get_head(), list) { + if (virtcrypto_dev_started(tmp_dev)) { + vcrypto_dev = tmp_dev; + break; + } + } + } + mutex_unlock(&table_lock); + if (!vcrypto_dev) + return NULL; + + virtcrypto_dev_get(vcrypto_dev); + return vcrypto_dev; +} + +/* + * virtcrypto_dev_start() - Start virtio crypto device + * @vcrypto: Pointer to virtio crypto device. + * + * Function notifies all the registered services that the virtio crypto device + * is ready to be used. + * To be used by virtio crypto device specific drivers. + * + * Return: 0 on success, EFAULT when fail to register algorithms + */ +int virtcrypto_dev_start(struct virtio_crypto *vcrypto) +{ + if (virtio_crypto_algs_register()) { + pr_err("virtio_crypto: Failed to register crypto algs\n"); + return -EFAULT; + } + + return 0; +} + +/* + * virtcrypto_dev_stop() - Stop virtio crypto device + * @vcrypto: Pointer to virtio crypto device. + * + * Function notifies all the registered services that the virtio crypto device + * is ready to be used. + * To be used by virtio crypto device specific drivers. + * + * Return: void + */ +void virtcrypto_dev_stop(struct virtio_crypto *vcrypto) +{ + virtio_crypto_algs_unregister(); +} diff --git a/drivers/gpu/drm/virtio/virtgpu_plane.c b/drivers/gpu/drm/virtio/virtgpu_plane.c index cb75f0663ba0..11288ffa4af6 100644 --- a/drivers/gpu/drm/virtio/virtgpu_plane.c +++ b/drivers/gpu/drm/virtio/virtgpu_plane.c @@ -88,8 +88,8 @@ static void virtio_gpu_primary_plane_update(struct drm_plane *plane, (vgdev, handle, 0, cpu_to_le32(plane->state->src_w >> 16), cpu_to_le32(plane->state->src_h >> 16), - plane->state->src_x >> 16, - plane->state->src_y >> 16, NULL); + cpu_to_le32(plane->state->src_x >> 16), + cpu_to_le32(plane->state->src_y >> 16), NULL); } } else { handle = 0; diff --git a/drivers/gpu/drm/virtio/virtgpu_vq.c b/drivers/gpu/drm/virtio/virtgpu_vq.c index 974f9410474b..43ea0dc957d2 100644 --- a/drivers/gpu/drm/virtio/virtgpu_vq.c +++ b/drivers/gpu/drm/virtio/virtgpu_vq.c @@ -109,8 +109,10 @@ void virtio_gpu_free_vbufs(struct virtio_gpu_device *vgdev) spin_lock(&vgdev->free_vbufs_lock); for (i = 0; i < count; i++) { - if (WARN_ON(list_empty(&vgdev->free_vbufs))) + if (WARN_ON(list_empty(&vgdev->free_vbufs))) { + spin_unlock(&vgdev->free_vbufs_lock); return; + } vbuf = list_first_entry(&vgdev->free_vbufs, struct virtio_gpu_vbuffer, list); list_del(&vbuf->list); @@ -295,6 +297,8 @@ void virtio_gpu_dequeue_cursor_func(struct work_struct *work) static int virtio_gpu_queue_ctrl_buffer_locked(struct virtio_gpu_device *vgdev, struct virtio_gpu_vbuffer *vbuf) + __releases(&vgdev->ctrlq.qlock) + __acquires(&vgdev->ctrlq.qlock) { struct virtqueue *vq = vgdev->ctrlq.vq; struct scatterlist *sgs[3], vcmd, vout, vresp; diff --git a/drivers/md/dm-cache-block-types.h b/drivers/md/dm-cache-block-types.h index bed4ad4e1b7c..389c9e8ac785 100644 --- a/drivers/md/dm-cache-block-types.h +++ b/drivers/md/dm-cache-block-types.h @@ -17,9 +17,9 @@ * discard bitset. */ -typedef dm_block_t __bitwise__ dm_oblock_t; -typedef uint32_t __bitwise__ dm_cblock_t; -typedef dm_block_t __bitwise__ dm_dblock_t; +typedef dm_block_t __bitwise dm_oblock_t; +typedef uint32_t __bitwise dm_cblock_t; +typedef dm_block_t __bitwise dm_dblock_t; static inline dm_oblock_t to_oblock(dm_block_t b) { diff --git a/drivers/net/can/Makefile b/drivers/net/can/Makefile index 26ba4b794a0b..7a85495dbb0c 100644 --- a/drivers/net/can/Makefile +++ b/drivers/net/can/Makefile @@ -31,5 +31,4 @@ obj-$(CONFIG_CAN_TI_HECC) += ti_hecc.o obj-$(CONFIG_CAN_XILINXCAN) += xilinx_can.o obj-$(CONFIG_PCH_CAN) += pch_can.o -subdir-ccflags-y += -D__CHECK_ENDIAN__ subdir-ccflags-$(CONFIG_CAN_DEBUG_DEVICES) += -DDEBUG diff --git a/drivers/net/ethernet/altera/Makefile b/drivers/net/ethernet/altera/Makefile index 3eff2fd3997e..d4a187e45369 100644 --- a/drivers/net/ethernet/altera/Makefile +++ b/drivers/net/ethernet/altera/Makefile @@ -5,4 +5,3 @@ obj-$(CONFIG_ALTERA_TSE) += altera_tse.o altera_tse-objs := altera_tse_main.o altera_tse_ethtool.o \ altera_msgdma.o altera_sgdma.o altera_utils.o -ccflags-y += -D__CHECK_ENDIAN__ diff --git a/drivers/net/ethernet/atheros/alx/Makefile b/drivers/net/ethernet/atheros/alx/Makefile index 5901fa407d52..ed4a605874a3 100644 --- a/drivers/net/ethernet/atheros/alx/Makefile +++ b/drivers/net/ethernet/atheros/alx/Makefile @@ -1,3 +1,2 @@ obj-$(CONFIG_ALX) += alx.o alx-objs := main.o ethtool.o hw.o -ccflags-y += -D__CHECK_ENDIAN__ diff --git a/drivers/net/ethernet/freescale/Makefile b/drivers/net/ethernet/freescale/Makefile index 4a13115155c9..c46df5c82af5 100644 --- a/drivers/net/ethernet/freescale/Makefile +++ b/drivers/net/ethernet/freescale/Makefile @@ -4,8 +4,6 @@ obj-$(CONFIG_FEC) += fec.o fec-objs :=fec_main.o fec_ptp.o -CFLAGS_fec_main.o := -D__CHECK_ENDIAN__ -CFLAGS_fec_ptp.o := -D__CHECK_ENDIAN__ obj-$(CONFIG_FEC_MPC52xx) += fec_mpc52xx.o ifeq ($(CONFIG_FEC_MPC52xx_MDIO),y) diff --git a/drivers/net/ethernet/sun/sunhme.h b/drivers/net/ethernet/sun/sunhme.h index f4307654e4ae..4a8d5b18dfd5 100644 --- a/drivers/net/ethernet/sun/sunhme.h +++ b/drivers/net/ethernet/sun/sunhme.h @@ -302,7 +302,7 @@ * Always write the address first before setting the ownership * bits to avoid races with the hardware scanning the ring. */ -typedef u32 __bitwise__ hme32; +typedef u32 __bitwise hme32; struct happy_meal_rxd { hme32 rx_flags; diff --git a/drivers/net/wireless/ath/Makefile b/drivers/net/wireless/ath/Makefile index 89f8d5979402..4cdebc7659dd 100644 --- a/drivers/net/wireless/ath/Makefile +++ b/drivers/net/wireless/ath/Makefile @@ -19,6 +19,4 @@ ath-objs := main.o \ ath-$(CONFIG_ATH_DEBUG) += debug.o ath-$(CONFIG_ATH_TRACEPOINTS) += trace.o -ccflags-y += -D__CHECK_ENDIAN__ - CFLAGS_trace.o := -I$(src) diff --git a/drivers/net/wireless/ath/wil6210/Makefile b/drivers/net/wireless/ath/wil6210/Makefile index 11b544b26c74..89bf2f9eca1d 100644 --- a/drivers/net/wireless/ath/wil6210/Makefile +++ b/drivers/net/wireless/ath/wil6210/Makefile @@ -22,5 +22,3 @@ wil6210-y += p2p.o # for tracing framework to find trace.h CFLAGS_trace.o := -I$(src) - -subdir-ccflags-y += -D__CHECK_ENDIAN__ diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/Makefile b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/Makefile index d1568bed1ad1..0383ba559edc 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/Makefile +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/Makefile @@ -19,8 +19,6 @@ ccflags-y += \ -Idrivers/net/wireless/broadcom/brcm80211/brcmfmac \ -Idrivers/net/wireless/broadcom/brcm80211/include -ccflags-y += -D__CHECK_ENDIAN__ - obj-$(CONFIG_BRCMFMAC) += brcmfmac.o brcmfmac-objs += \ cfg80211.o \ diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmsmac/Makefile b/drivers/net/wireless/broadcom/brcm80211/brcmsmac/Makefile index 960e6b86bbcb..ed83f33aceb7 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmsmac/Makefile +++ b/drivers/net/wireless/broadcom/brcm80211/brcmsmac/Makefile @@ -16,7 +16,6 @@ # CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. ccflags-y := \ - -D__CHECK_ENDIAN__ \ -Idrivers/net/wireless/broadcom/brcm80211/brcmsmac \ -Idrivers/net/wireless/broadcom/brcm80211/brcmsmac/phy \ -Idrivers/net/wireless/broadcom/brcm80211/include diff --git a/drivers/net/wireless/intel/iwlegacy/Makefile b/drivers/net/wireless/intel/iwlegacy/Makefile index c985a01a0731..c826a6b985bb 100644 --- a/drivers/net/wireless/intel/iwlegacy/Makefile +++ b/drivers/net/wireless/intel/iwlegacy/Makefile @@ -13,5 +13,3 @@ iwl4965-$(CONFIG_IWLEGACY_DEBUGFS) += 4965-debug.o obj-$(CONFIG_IWL3945) += iwl3945.o iwl3945-objs := 3945-mac.o 3945.o 3945-rs.o iwl3945-$(CONFIG_IWLEGACY_DEBUGFS) += 3945-debug.o - -ccflags-y += -D__CHECK_ENDIAN__ diff --git a/drivers/net/wireless/intel/iwlwifi/Makefile b/drivers/net/wireless/intel/iwlwifi/Makefile index 6e7ed908de0c..92e611841200 100644 --- a/drivers/net/wireless/intel/iwlwifi/Makefile +++ b/drivers/net/wireless/intel/iwlwifi/Makefile @@ -15,7 +15,7 @@ iwlwifi-objs += $(iwlwifi-m) iwlwifi-$(CONFIG_IWLWIFI_DEVICE_TRACING) += iwl-devtrace.o -ccflags-y += -D__CHECK_ENDIAN__ -I$(src) +ccflags-y += -I$(src) obj-$(CONFIG_IWLDVM) += dvm/ obj-$(CONFIG_IWLMVM) += mvm/ diff --git a/drivers/net/wireless/intel/iwlwifi/dvm/Makefile b/drivers/net/wireless/intel/iwlwifi/dvm/Makefile index 4d19685f31c3..b256a354953a 100644 --- a/drivers/net/wireless/intel/iwlwifi/dvm/Makefile +++ b/drivers/net/wireless/intel/iwlwifi/dvm/Makefile @@ -10,4 +10,4 @@ iwldvm-objs += rxon.o devices.o iwldvm-$(CONFIG_IWLWIFI_LEDS) += led.o iwldvm-$(CONFIG_IWLWIFI_DEBUGFS) += debugfs.o -ccflags-y += -D__CHECK_ENDIAN__ -I$(src)/../ +ccflags-y += -I$(src)/../ diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-fw-file.h b/drivers/net/wireless/intel/iwlwifi/iwl-fw-file.h index 1ad0ec180d5d..84813b550ef1 100644 --- a/drivers/net/wireless/intel/iwlwifi/iwl-fw-file.h +++ b/drivers/net/wireless/intel/iwlwifi/iwl-fw-file.h @@ -228,7 +228,7 @@ enum iwl_ucode_tlv_flag { IWL_UCODE_TLV_FLAGS_BCAST_FILTERING = BIT(29), }; -typedef unsigned int __bitwise__ iwl_ucode_tlv_api_t; +typedef unsigned int __bitwise iwl_ucode_tlv_api_t; /** * enum iwl_ucode_tlv_api - ucode api @@ -258,7 +258,7 @@ enum iwl_ucode_tlv_api { #endif }; -typedef unsigned int __bitwise__ iwl_ucode_tlv_capa_t; +typedef unsigned int __bitwise iwl_ucode_tlv_capa_t; /** * enum iwl_ucode_tlv_capa - ucode capabilities diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/Makefile b/drivers/net/wireless/intel/iwlwifi/mvm/Makefile index 2e06dfc1c477..83ac807e547d 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/Makefile +++ b/drivers/net/wireless/intel/iwlwifi/mvm/Makefile @@ -9,4 +9,4 @@ iwlmvm-$(CONFIG_IWLWIFI_LEDS) += led.o iwlmvm-y += tof.o fw-dbg.o iwlmvm-$(CONFIG_PM) += d3.o -ccflags-y += -D__CHECK_ENDIAN__ -I$(src)/../ +ccflags-y += -I$(src)/../ diff --git a/drivers/net/wireless/intersil/orinoco/Makefile b/drivers/net/wireless/intersil/orinoco/Makefile index bfdefb85abcd..b7ecef820f76 100644 --- a/drivers/net/wireless/intersil/orinoco/Makefile +++ b/drivers/net/wireless/intersil/orinoco/Makefile @@ -12,6 +12,3 @@ obj-$(CONFIG_TMD_HERMES) += orinoco_tmd.o obj-$(CONFIG_NORTEL_HERMES) += orinoco_nortel.o obj-$(CONFIG_PCMCIA_SPECTRUM) += spectrum_cs.o obj-$(CONFIG_ORINOCO_USB) += orinoco_usb.o - -# Orinoco should be endian clean. -ccflags-y += -D__CHECK_ENDIAN__ diff --git a/drivers/net/wireless/mediatek/mt7601u/Makefile b/drivers/net/wireless/mediatek/mt7601u/Makefile index ea9ed8a5db4d..08fc802ead4b 100644 --- a/drivers/net/wireless/mediatek/mt7601u/Makefile +++ b/drivers/net/wireless/mediatek/mt7601u/Makefile @@ -1,5 +1,3 @@ -ccflags-y += -D__CHECK_ENDIAN__ - obj-$(CONFIG_MT7601U) += mt7601u.o mt7601u-objs = \ diff --git a/drivers/net/wireless/realtek/rtlwifi/Makefile b/drivers/net/wireless/realtek/rtlwifi/Makefile index ad6d3c52ec57..84c2e826fa1d 100644 --- a/drivers/net/wireless/realtek/rtlwifi/Makefile +++ b/drivers/net/wireless/realtek/rtlwifi/Makefile @@ -30,5 +30,3 @@ obj-$(CONFIG_RTLBTCOEXIST) += btcoexist/ obj-$(CONFIG_RTL8723_COMMON) += rtl8723com/ obj-$(CONFIG_RTL8821AE) += rtl8821ae/ obj-$(CONFIG_RTL8192EE) += rtl8192ee/ - -ccflags-y += -D__CHECK_ENDIAN__ diff --git a/drivers/net/wireless/realtek/rtlwifi/btcoexist/Makefile b/drivers/net/wireless/realtek/rtlwifi/btcoexist/Makefile index 47ceecfcb7dc..d1454d4f08a5 100644 --- a/drivers/net/wireless/realtek/rtlwifi/btcoexist/Makefile +++ b/drivers/net/wireless/realtek/rtlwifi/btcoexist/Makefile @@ -3,5 +3,3 @@ btcoexist-objs := halbtc8723b2ant.o \ rtl_btc.o obj-$(CONFIG_RTLBTCOEXIST) += btcoexist.o - -ccflags-y += -D__CHECK_ENDIAN__ diff --git a/drivers/net/wireless/realtek/rtlwifi/rtl8188ee/Makefile b/drivers/net/wireless/realtek/rtlwifi/rtl8188ee/Makefile index 676e7de27f27..dae4f0f19cd3 100644 --- a/drivers/net/wireless/realtek/rtlwifi/rtl8188ee/Makefile +++ b/drivers/net/wireless/realtek/rtlwifi/rtl8188ee/Makefile @@ -11,5 +11,3 @@ rtl8188ee-objs := \ trx.o obj-$(CONFIG_RTL8188EE) += rtl8188ee.o - -ccflags-y += -D__CHECK_ENDIAN__ diff --git a/drivers/net/wireless/realtek/rtlwifi/rtl8192c/Makefile b/drivers/net/wireless/realtek/rtlwifi/rtl8192c/Makefile index aee42d7ae8a2..0546b7556259 100644 --- a/drivers/net/wireless/realtek/rtlwifi/rtl8192c/Makefile +++ b/drivers/net/wireless/realtek/rtlwifi/rtl8192c/Makefile @@ -5,5 +5,3 @@ rtl8192c-common-objs := \ phy_common.o obj-$(CONFIG_RTL8192C_COMMON) += rtl8192c-common.o - -ccflags-y += -D__CHECK_ENDIAN__ diff --git a/drivers/net/wireless/realtek/rtlwifi/rtl8192ce/Makefile b/drivers/net/wireless/realtek/rtlwifi/rtl8192ce/Makefile index c0cb0cfe7d37..577c7adbc322 100644 --- a/drivers/net/wireless/realtek/rtlwifi/rtl8192ce/Makefile +++ b/drivers/net/wireless/realtek/rtlwifi/rtl8192ce/Makefile @@ -9,5 +9,3 @@ rtl8192ce-objs := \ trx.o obj-$(CONFIG_RTL8192CE) += rtl8192ce.o - -ccflags-y += -D__CHECK_ENDIAN__ diff --git a/drivers/net/wireless/realtek/rtlwifi/rtl8192cu/Makefile b/drivers/net/wireless/realtek/rtlwifi/rtl8192cu/Makefile index ad2de6b839ef..97437dadc287 100644 --- a/drivers/net/wireless/realtek/rtlwifi/rtl8192cu/Makefile +++ b/drivers/net/wireless/realtek/rtlwifi/rtl8192cu/Makefile @@ -10,5 +10,3 @@ rtl8192cu-objs := \ trx.o obj-$(CONFIG_RTL8192CU) += rtl8192cu.o - -ccflags-y += -D__CHECK_ENDIAN__ diff --git a/drivers/net/wireless/realtek/rtlwifi/rtl8192de/Makefile b/drivers/net/wireless/realtek/rtlwifi/rtl8192de/Makefile index e3213c8264b6..d0703f20d30c 100644 --- a/drivers/net/wireless/realtek/rtlwifi/rtl8192de/Makefile +++ b/drivers/net/wireless/realtek/rtlwifi/rtl8192de/Makefile @@ -10,5 +10,3 @@ rtl8192de-objs := \ trx.o obj-$(CONFIG_RTL8192DE) += rtl8192de.o - -ccflags-y += -D__CHECK_ENDIAN__ diff --git a/drivers/net/wireless/realtek/rtlwifi/rtl8192ee/Makefile b/drivers/net/wireless/realtek/rtlwifi/rtl8192ee/Makefile index 0315eeda9b60..f254b9f64326 100644 --- a/drivers/net/wireless/realtek/rtlwifi/rtl8192ee/Makefile +++ b/drivers/net/wireless/realtek/rtlwifi/rtl8192ee/Makefile @@ -12,5 +12,3 @@ rtl8192ee-objs := \ obj-$(CONFIG_RTL8192EE) += rtl8192ee.o - -ccflags-y += -D__CHECK_ENDIAN__ diff --git a/drivers/net/wireless/realtek/rtlwifi/rtl8192se/Makefile b/drivers/net/wireless/realtek/rtlwifi/rtl8192se/Makefile index b7eb13819cbc..dfa9dbbe2cdf 100644 --- a/drivers/net/wireless/realtek/rtlwifi/rtl8192se/Makefile +++ b/drivers/net/wireless/realtek/rtlwifi/rtl8192se/Makefile @@ -11,5 +11,3 @@ rtl8192se-objs := \ obj-$(CONFIG_RTL8192SE) += rtl8192se.o -ccflags-y += -D__CHECK_ENDIAN__ - diff --git a/drivers/net/wireless/realtek/rtlwifi/rtl8723ae/Makefile b/drivers/net/wireless/realtek/rtlwifi/rtl8723ae/Makefile index 6220672a96f4..e7607d2cb2ef 100644 --- a/drivers/net/wireless/realtek/rtlwifi/rtl8723ae/Makefile +++ b/drivers/net/wireless/realtek/rtlwifi/rtl8723ae/Makefile @@ -14,5 +14,3 @@ rtl8723ae-objs := \ obj-$(CONFIG_RTL8723AE) += rtl8723ae.o - -ccflags-y += -D__CHECK_ENDIAN__ diff --git a/drivers/net/wireless/realtek/rtlwifi/rtl8723be/Makefile b/drivers/net/wireless/realtek/rtlwifi/rtl8723be/Makefile index a77c34102792..a841cbd55d8e 100644 --- a/drivers/net/wireless/realtek/rtlwifi/rtl8723be/Makefile +++ b/drivers/net/wireless/realtek/rtlwifi/rtl8723be/Makefile @@ -12,5 +12,3 @@ rtl8723be-objs := \ obj-$(CONFIG_RTL8723BE) += rtl8723be.o - -ccflags-y += -D__CHECK_ENDIAN__ diff --git a/drivers/net/wireless/realtek/rtlwifi/rtl8723com/Makefile b/drivers/net/wireless/realtek/rtlwifi/rtl8723com/Makefile index 345a68adcf38..73da75526e2a 100644 --- a/drivers/net/wireless/realtek/rtlwifi/rtl8723com/Makefile +++ b/drivers/net/wireless/realtek/rtlwifi/rtl8723com/Makefile @@ -5,5 +5,3 @@ rtl8723-common-objs := \ phy_common.o obj-$(CONFIG_RTL8723_COMMON) += rtl8723-common.o - -ccflags-y += -D__CHECK_ENDIAN__ diff --git a/drivers/net/wireless/realtek/rtlwifi/rtl8821ae/Makefile b/drivers/net/wireless/realtek/rtlwifi/rtl8821ae/Makefile index f7a26f71197e..8ca406b95f02 100644 --- a/drivers/net/wireless/realtek/rtlwifi/rtl8821ae/Makefile +++ b/drivers/net/wireless/realtek/rtlwifi/rtl8821ae/Makefile @@ -12,5 +12,3 @@ rtl8821ae-objs := \ obj-$(CONFIG_RTL8821AE) += rtl8821ae.o - -ccflags-y += -D__CHECK_ENDIAN__ diff --git a/drivers/net/wireless/ti/wl1251/Makefile b/drivers/net/wireless/ti/wl1251/Makefile index a5c6328b5f72..58b4f935a3f6 100644 --- a/drivers/net/wireless/ti/wl1251/Makefile +++ b/drivers/net/wireless/ti/wl1251/Makefile @@ -6,5 +6,3 @@ wl1251_sdio-objs += sdio.o obj-$(CONFIG_WL1251) += wl1251.o obj-$(CONFIG_WL1251_SPI) += wl1251_spi.o obj-$(CONFIG_WL1251_SDIO) += wl1251_sdio.o - -ccflags-y += -D__CHECK_ENDIAN__ diff --git a/drivers/net/wireless/ti/wlcore/Makefile b/drivers/net/wireless/ti/wlcore/Makefile index 0a69c1373643..e286713b3c18 100644 --- a/drivers/net/wireless/ti/wlcore/Makefile +++ b/drivers/net/wireless/ti/wlcore/Makefile @@ -8,5 +8,3 @@ wlcore-$(CONFIG_NL80211_TESTMODE) += testmode.o obj-$(CONFIG_WLCORE) += wlcore.o obj-$(CONFIG_WLCORE_SPI) += wlcore_spi.o obj-$(CONFIG_WLCORE_SDIO) += wlcore_sdio.o - -ccflags-y += -D__CHECK_ENDIAN__ diff --git a/drivers/staging/rtl8188eu/Makefile b/drivers/staging/rtl8188eu/Makefile index 29b9834870fd..27af86e05098 100644 --- a/drivers/staging/rtl8188eu/Makefile +++ b/drivers/staging/rtl8188eu/Makefile @@ -53,4 +53,4 @@ r8188eu-y := \ obj-$(CONFIG_R8188EU) := r8188eu.o -ccflags-y += -D__CHECK_ENDIAN__ -I$(srctree)/$(src)/include +ccflags-y += -I$(srctree)/$(src)/include diff --git a/drivers/staging/rtl8192e/Makefile b/drivers/staging/rtl8192e/Makefile index cb18db74d78c..7101fcc8871b 100644 --- a/drivers/staging/rtl8192e/Makefile +++ b/drivers/staging/rtl8192e/Makefile @@ -17,5 +17,3 @@ obj-$(CONFIG_RTLLIB_CRYPTO_TKIP) += rtllib_crypt_tkip.o obj-$(CONFIG_RTLLIB_CRYPTO_WEP) += rtllib_crypt_wep.o obj-$(CONFIG_RTL8192E) += rtl8192e/ - -ccflags-y += -D__CHECK_ENDIAN__ diff --git a/drivers/staging/rtl8192e/rtl8192e/Makefile b/drivers/staging/rtl8192e/rtl8192e/Makefile index a2c4fb4ba1af..176a4a2b8b20 100644 --- a/drivers/staging/rtl8192e/rtl8192e/Makefile +++ b/drivers/staging/rtl8192e/rtl8192e/Makefile @@ -16,5 +16,3 @@ r8192e_pci-objs := \ rtl_wx.o \ obj-$(CONFIG_RTL8192E) += r8192e_pci.o - -ccflags-y += -D__CHECK_ENDIAN__ diff --git a/drivers/vhost/scsi.c b/drivers/vhost/scsi.c index 6e29d053843d..e2be447752c2 100644 --- a/drivers/vhost/scsi.c +++ b/drivers/vhost/scsi.c @@ -1749,7 +1749,6 @@ out: static int vhost_scsi_make_nexus(struct vhost_scsi_tpg *tpg, const char *name) { - struct se_portal_group *se_tpg; struct vhost_scsi_nexus *tv_nexus; mutex_lock(&tpg->tv_tpg_mutex); @@ -1758,7 +1757,6 @@ static int vhost_scsi_make_nexus(struct vhost_scsi_tpg *tpg, pr_debug("tpg->tpg_nexus already exists\n"); return -EEXIST; } - se_tpg = &tpg->se_tpg; tv_nexus = kzalloc(sizeof(struct vhost_scsi_nexus), GFP_KERNEL); if (!tv_nexus) { diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c index 266354390c8f..c0f81e8cb50c 100644 --- a/drivers/vhost/vhost.c +++ b/drivers/vhost/vhost.c @@ -49,7 +49,7 @@ enum { INTERVAL_TREE_DEFINE(struct vhost_umem_node, rb, __u64, __subtree_last, - START, LAST, , vhost_umem_interval_tree); + START, LAST, static inline, vhost_umem_interval_tree); #ifdef CONFIG_VHOST_CROSS_ENDIAN_LEGACY static void vhost_disable_cross_endian(struct vhost_virtqueue *vq) @@ -290,6 +290,7 @@ static void vhost_vq_reset(struct vhost_dev *dev, vq->avail = NULL; vq->used = NULL; vq->last_avail_idx = 0; + vq->last_used_event = 0; vq->avail_idx = 0; vq->last_used_idx = 0; vq->signalled_used = 0; @@ -719,7 +720,7 @@ static int memory_access_ok(struct vhost_dev *d, struct vhost_umem *umem, static int translate_desc(struct vhost_virtqueue *vq, u64 addr, u32 len, struct iovec iov[], int iov_size, int access); -static int vhost_copy_to_user(struct vhost_virtqueue *vq, void *to, +static int vhost_copy_to_user(struct vhost_virtqueue *vq, void __user *to, const void *from, unsigned size) { int ret; @@ -749,7 +750,7 @@ out: } static int vhost_copy_from_user(struct vhost_virtqueue *vq, void *to, - void *from, unsigned size) + void __user *from, unsigned size) { int ret; @@ -783,7 +784,7 @@ out: } static void __user *__vhost_get_user(struct vhost_virtqueue *vq, - void *addr, unsigned size) + void __user *addr, unsigned size) { int ret; @@ -934,8 +935,8 @@ static int umem_access_ok(u64 uaddr, u64 size, int access) return 0; } -int vhost_process_iotlb_msg(struct vhost_dev *dev, - struct vhost_iotlb_msg *msg) +static int vhost_process_iotlb_msg(struct vhost_dev *dev, + struct vhost_iotlb_msg *msg) { int ret = 0; @@ -1324,7 +1325,7 @@ long vhost_vring_ioctl(struct vhost_dev *d, int ioctl, void __user *argp) r = -EINVAL; break; } - vq->last_avail_idx = s.num; + vq->last_avail_idx = vq->last_used_event = s.num; /* Forget the cached index value. */ vq->avail_idx = vq->last_avail_idx; break; @@ -2159,10 +2160,6 @@ static bool vhost_notify(struct vhost_dev *dev, struct vhost_virtqueue *vq) __u16 old, new; __virtio16 event; bool v; - /* Flush out used index updates. This is paired - * with the barrier that the Guest executes when enabling - * interrupts. */ - smp_mb(); if (vhost_has_feature(vq, VIRTIO_F_NOTIFY_ON_EMPTY) && unlikely(vq->avail_idx == vq->last_avail_idx)) @@ -2170,6 +2167,10 @@ static bool vhost_notify(struct vhost_dev *dev, struct vhost_virtqueue *vq) if (!vhost_has_feature(vq, VIRTIO_RING_F_EVENT_IDX)) { __virtio16 flags; + /* Flush out used index updates. This is paired + * with the barrier that the Guest executes when enabling + * interrupts. */ + smp_mb(); if (vhost_get_user(vq, flags, &vq->avail->flags)) { vq_err(vq, "Failed to get flags"); return true; @@ -2184,11 +2185,26 @@ static bool vhost_notify(struct vhost_dev *dev, struct vhost_virtqueue *vq) if (unlikely(!v)) return true; + /* We're sure if the following conditions are met, there's no + * need to notify guest: + * 1) cached used event is ahead of new + * 2) old to new updating does not cross cached used event. */ + if (vring_need_event(vq->last_used_event, new + vq->num, new) && + !vring_need_event(vq->last_used_event, new, old)) + return false; + + /* Flush out used index updates. This is paired + * with the barrier that the Guest executes when enabling + * interrupts. */ + smp_mb(); + if (vhost_get_user(vq, event, vhost_used_event(vq))) { vq_err(vq, "Failed to get used event idx"); return true; } - return vring_need_event(vhost16_to_cpu(vq, event), new, old); + vq->last_used_event = vhost16_to_cpu(vq, event); + + return vring_need_event(vq->last_used_event, new, old); } /* This actually signals the guest, using eventfd. */ diff --git a/drivers/vhost/vhost.h b/drivers/vhost/vhost.h index 78f3c5fc02e4..a9cbbb148f46 100644 --- a/drivers/vhost/vhost.h +++ b/drivers/vhost/vhost.h @@ -107,6 +107,9 @@ struct vhost_virtqueue { /* Last index we used. */ u16 last_used_idx; + /* Last used evet we've seen */ + u16 last_used_event; + /* Used flags */ u16 used_flags; diff --git a/drivers/vhost/vringh.c b/drivers/vhost/vringh.c index 3bb02c60a2f5..bb8971f2a634 100644 --- a/drivers/vhost/vringh.c +++ b/drivers/vhost/vringh.c @@ -3,6 +3,7 @@ * * Since these may be in userspace, we use (inline) accessors. */ +#include <linux/compiler.h> #include <linux/module.h> #include <linux/vringh.h> #include <linux/virtio_ring.h> @@ -820,13 +821,13 @@ EXPORT_SYMBOL(vringh_need_notify_user); static inline int getu16_kern(const struct vringh *vrh, u16 *val, const __virtio16 *p) { - *val = vringh16_to_cpu(vrh, ACCESS_ONCE(*p)); + *val = vringh16_to_cpu(vrh, READ_ONCE(*p)); return 0; } static inline int putu16_kern(const struct vringh *vrh, __virtio16 *p, u16 val) { - ACCESS_ONCE(*p) = cpu_to_vringh16(vrh, val); + WRITE_ONCE(*p, cpu_to_vringh16(vrh, val)); return 0; } diff --git a/drivers/vhost/vsock.c b/drivers/vhost/vsock.c index e6b70966c19d..bbbf588540ed 100644 --- a/drivers/vhost/vsock.c +++ b/drivers/vhost/vsock.c @@ -50,11 +50,10 @@ static u32 vhost_transport_get_local_cid(void) return VHOST_VSOCK_DEFAULT_HOST_CID; } -static struct vhost_vsock *vhost_vsock_get(u32 guest_cid) +static struct vhost_vsock *__vhost_vsock_get(u32 guest_cid) { struct vhost_vsock *vsock; - spin_lock_bh(&vhost_vsock_lock); list_for_each_entry(vsock, &vhost_vsock_list, list) { u32 other_cid = vsock->guest_cid; @@ -63,15 +62,24 @@ static struct vhost_vsock *vhost_vsock_get(u32 guest_cid) continue; if (other_cid == guest_cid) { - spin_unlock_bh(&vhost_vsock_lock); return vsock; } } - spin_unlock_bh(&vhost_vsock_lock); return NULL; } +static struct vhost_vsock *vhost_vsock_get(u32 guest_cid) +{ + struct vhost_vsock *vsock; + + spin_lock_bh(&vhost_vsock_lock); + vsock = __vhost_vsock_get(guest_cid); + spin_unlock_bh(&vhost_vsock_lock); + + return vsock; +} + static void vhost_transport_do_send_pkt(struct vhost_vsock *vsock, struct vhost_virtqueue *vq) @@ -559,11 +567,12 @@ static int vhost_vsock_set_cid(struct vhost_vsock *vsock, u64 guest_cid) return -EINVAL; /* Refuse if CID is already in use */ - other = vhost_vsock_get(guest_cid); - if (other && other != vsock) - return -EADDRINUSE; - spin_lock_bh(&vhost_vsock_lock); + other = __vhost_vsock_get(guest_cid); + if (other && other != vsock) { + spin_unlock_bh(&vhost_vsock_lock); + return -EADDRINUSE; + } vsock->guest_cid = guest_cid; spin_unlock_bh(&vhost_vsock_lock); diff --git a/drivers/virtio/virtio_mmio.c b/drivers/virtio/virtio_mmio.c index 48bfea91dbca..d47a2fcef818 100644 --- a/drivers/virtio/virtio_mmio.c +++ b/drivers/virtio/virtio_mmio.c @@ -489,6 +489,7 @@ static const struct virtio_config_ops virtio_mmio_config_ops = { }; +static void virtio_mmio_release_dev_empty(struct device *_d) {} /* Platform device */ @@ -511,6 +512,7 @@ static int virtio_mmio_probe(struct platform_device *pdev) return -ENOMEM; vm_dev->vdev.dev.parent = &pdev->dev; + vm_dev->vdev.dev.release = virtio_mmio_release_dev_empty; vm_dev->vdev.config = &virtio_mmio_config_ops; vm_dev->pdev = pdev; INIT_LIST_HEAD(&vm_dev->virtqueues); diff --git a/drivers/virtio/virtio_pci_common.c b/drivers/virtio/virtio_pci_common.c index d9a905827967..186cbab327b8 100644 --- a/drivers/virtio/virtio_pci_common.c +++ b/drivers/virtio/virtio_pci_common.c @@ -37,7 +37,7 @@ void vp_synchronize_vectors(struct virtio_device *vdev) synchronize_irq(vp_dev->pci_dev->irq); for (i = 0; i < vp_dev->msix_vectors; ++i) - synchronize_irq(vp_dev->msix_entries[i].vector); + synchronize_irq(pci_irq_vector(vp_dev->pci_dev, i)); } /* the notify function used when creating a virt queue */ @@ -102,41 +102,6 @@ static irqreturn_t vp_interrupt(int irq, void *opaque) return vp_vring_interrupt(irq, opaque); } -static void vp_free_vectors(struct virtio_device *vdev) -{ - struct virtio_pci_device *vp_dev = to_vp_device(vdev); - int i; - - if (vp_dev->intx_enabled) { - free_irq(vp_dev->pci_dev->irq, vp_dev); - vp_dev->intx_enabled = 0; - } - - for (i = 0; i < vp_dev->msix_used_vectors; ++i) - free_irq(vp_dev->msix_entries[i].vector, vp_dev); - - for (i = 0; i < vp_dev->msix_vectors; i++) - if (vp_dev->msix_affinity_masks[i]) - free_cpumask_var(vp_dev->msix_affinity_masks[i]); - - if (vp_dev->msix_enabled) { - /* Disable the vector used for configuration */ - vp_dev->config_vector(vp_dev, VIRTIO_MSI_NO_VECTOR); - - pci_disable_msix(vp_dev->pci_dev); - vp_dev->msix_enabled = 0; - } - - vp_dev->msix_vectors = 0; - vp_dev->msix_used_vectors = 0; - kfree(vp_dev->msix_names); - vp_dev->msix_names = NULL; - kfree(vp_dev->msix_entries); - vp_dev->msix_entries = NULL; - kfree(vp_dev->msix_affinity_masks); - vp_dev->msix_affinity_masks = NULL; -} - static int vp_request_msix_vectors(struct virtio_device *vdev, int nvectors, bool per_vq_vectors) { @@ -147,10 +112,6 @@ static int vp_request_msix_vectors(struct virtio_device *vdev, int nvectors, vp_dev->msix_vectors = nvectors; - vp_dev->msix_entries = kmalloc(nvectors * sizeof *vp_dev->msix_entries, - GFP_KERNEL); - if (!vp_dev->msix_entries) - goto error; vp_dev->msix_names = kmalloc(nvectors * sizeof *vp_dev->msix_names, GFP_KERNEL); if (!vp_dev->msix_names) @@ -165,12 +126,9 @@ static int vp_request_msix_vectors(struct virtio_device *vdev, int nvectors, GFP_KERNEL)) goto error; - for (i = 0; i < nvectors; ++i) - vp_dev->msix_entries[i].entry = i; - - err = pci_enable_msix_exact(vp_dev->pci_dev, - vp_dev->msix_entries, nvectors); - if (err) + err = pci_alloc_irq_vectors(vp_dev->pci_dev, nvectors, nvectors, + PCI_IRQ_MSIX); + if (err < 0) goto error; vp_dev->msix_enabled = 1; @@ -178,7 +136,7 @@ static int vp_request_msix_vectors(struct virtio_device *vdev, int nvectors, v = vp_dev->msix_used_vectors; snprintf(vp_dev->msix_names[v], sizeof *vp_dev->msix_names, "%s-config", name); - err = request_irq(vp_dev->msix_entries[v].vector, + err = request_irq(pci_irq_vector(vp_dev->pci_dev, v), vp_config_changed, 0, vp_dev->msix_names[v], vp_dev); if (err) @@ -197,7 +155,7 @@ static int vp_request_msix_vectors(struct virtio_device *vdev, int nvectors, v = vp_dev->msix_used_vectors; snprintf(vp_dev->msix_names[v], sizeof *vp_dev->msix_names, "%s-virtqueues", name); - err = request_irq(vp_dev->msix_entries[v].vector, + err = request_irq(pci_irq_vector(vp_dev->pci_dev, v), vp_vring_interrupt, 0, vp_dev->msix_names[v], vp_dev); if (err) @@ -206,19 +164,6 @@ static int vp_request_msix_vectors(struct virtio_device *vdev, int nvectors, } return 0; error: - vp_free_vectors(vdev); - return err; -} - -static int vp_request_intx(struct virtio_device *vdev) -{ - int err; - struct virtio_pci_device *vp_dev = to_vp_device(vdev); - - err = request_irq(vp_dev->pci_dev->irq, vp_interrupt, - IRQF_SHARED, dev_name(&vdev->dev), vp_dev); - if (!err) - vp_dev->intx_enabled = 1; return err; } @@ -276,67 +221,88 @@ void vp_del_vqs(struct virtio_device *vdev) { struct virtio_pci_device *vp_dev = to_vp_device(vdev); struct virtqueue *vq, *n; - struct virtio_pci_vq_info *info; + int i; list_for_each_entry_safe(vq, n, &vdev->vqs, list) { - info = vp_dev->vqs[vq->index]; - if (vp_dev->per_vq_vectors && - info->msix_vector != VIRTIO_MSI_NO_VECTOR) - free_irq(vp_dev->msix_entries[info->msix_vector].vector, - vq); + if (vp_dev->per_vq_vectors) { + int v = vp_dev->vqs[vq->index]->msix_vector; + + if (v != VIRTIO_MSI_NO_VECTOR) + free_irq(pci_irq_vector(vp_dev->pci_dev, v), + vq); + } vp_del_vq(vq); } vp_dev->per_vq_vectors = false; - vp_free_vectors(vdev); + if (vp_dev->intx_enabled) { + free_irq(vp_dev->pci_dev->irq, vp_dev); + vp_dev->intx_enabled = 0; + } + + for (i = 0; i < vp_dev->msix_used_vectors; ++i) + free_irq(pci_irq_vector(vp_dev->pci_dev, i), vp_dev); + + for (i = 0; i < vp_dev->msix_vectors; i++) + if (vp_dev->msix_affinity_masks[i]) + free_cpumask_var(vp_dev->msix_affinity_masks[i]); + + if (vp_dev->msix_enabled) { + /* Disable the vector used for configuration */ + vp_dev->config_vector(vp_dev, VIRTIO_MSI_NO_VECTOR); + + pci_free_irq_vectors(vp_dev->pci_dev); + vp_dev->msix_enabled = 0; + } + + vp_dev->msix_vectors = 0; + vp_dev->msix_used_vectors = 0; + kfree(vp_dev->msix_names); + vp_dev->msix_names = NULL; + kfree(vp_dev->msix_affinity_masks); + vp_dev->msix_affinity_masks = NULL; kfree(vp_dev->vqs); vp_dev->vqs = NULL; } -static int vp_try_to_find_vqs(struct virtio_device *vdev, unsigned nvqs, +static int vp_find_vqs_msix(struct virtio_device *vdev, unsigned nvqs, struct virtqueue *vqs[], vq_callback_t *callbacks[], const char * const names[], - bool use_msix, bool per_vq_vectors) { struct virtio_pci_device *vp_dev = to_vp_device(vdev); u16 msix_vec; int i, err, nvectors, allocated_vectors; - vp_dev->vqs = kmalloc(nvqs * sizeof *vp_dev->vqs, GFP_KERNEL); + vp_dev->vqs = kcalloc(nvqs, sizeof(*vp_dev->vqs), GFP_KERNEL); if (!vp_dev->vqs) return -ENOMEM; - if (!use_msix) { - /* Old style: one normal interrupt for change and all vqs. */ - err = vp_request_intx(vdev); - if (err) - goto error_find; + if (per_vq_vectors) { + /* Best option: one for change interrupt, one per vq. */ + nvectors = 1; + for (i = 0; i < nvqs; ++i) + if (callbacks[i]) + ++nvectors; } else { - if (per_vq_vectors) { - /* Best option: one for change interrupt, one per vq. */ - nvectors = 1; - for (i = 0; i < nvqs; ++i) - if (callbacks[i]) - ++nvectors; - } else { - /* Second best: one for change, shared for all vqs. */ - nvectors = 2; - } - - err = vp_request_msix_vectors(vdev, nvectors, per_vq_vectors); - if (err) - goto error_find; + /* Second best: one for change, shared for all vqs. */ + nvectors = 2; } + err = vp_request_msix_vectors(vdev, nvectors, per_vq_vectors); + if (err) + goto error_find; + vp_dev->per_vq_vectors = per_vq_vectors; allocated_vectors = vp_dev->msix_used_vectors; for (i = 0; i < nvqs; ++i) { if (!names[i]) { vqs[i] = NULL; continue; - } else if (!callbacks[i] || !vp_dev->msix_enabled) + } + + if (!callbacks[i]) msix_vec = VIRTIO_MSI_NO_VECTOR; else if (vp_dev->per_vq_vectors) msix_vec = allocated_vectors++; @@ -356,14 +322,12 @@ static int vp_try_to_find_vqs(struct virtio_device *vdev, unsigned nvqs, sizeof *vp_dev->msix_names, "%s-%s", dev_name(&vp_dev->vdev.dev), names[i]); - err = request_irq(vp_dev->msix_entries[msix_vec].vector, + err = request_irq(pci_irq_vector(vp_dev->pci_dev, msix_vec), vring_interrupt, 0, vp_dev->msix_names[msix_vec], vqs[i]); - if (err) { - vp_del_vq(vqs[i]); + if (err) goto error_find; - } } return 0; @@ -372,6 +336,43 @@ error_find: return err; } +static int vp_find_vqs_intx(struct virtio_device *vdev, unsigned nvqs, + struct virtqueue *vqs[], vq_callback_t *callbacks[], + const char * const names[]) +{ + struct virtio_pci_device *vp_dev = to_vp_device(vdev); + int i, err; + + vp_dev->vqs = kcalloc(nvqs, sizeof(*vp_dev->vqs), GFP_KERNEL); + if (!vp_dev->vqs) + return -ENOMEM; + + err = request_irq(vp_dev->pci_dev->irq, vp_interrupt, IRQF_SHARED, + dev_name(&vdev->dev), vp_dev); + if (err) + goto out_del_vqs; + + vp_dev->intx_enabled = 1; + vp_dev->per_vq_vectors = false; + for (i = 0; i < nvqs; ++i) { + if (!names[i]) { + vqs[i] = NULL; + continue; + } + vqs[i] = vp_setup_vq(vdev, i, callbacks[i], names[i], + VIRTIO_MSI_NO_VECTOR); + if (IS_ERR(vqs[i])) { + err = PTR_ERR(vqs[i]); + goto out_del_vqs; + } + } + + return 0; +out_del_vqs: + vp_del_vqs(vdev); + return err; +} + /* the config->find_vqs() implementation */ int vp_find_vqs(struct virtio_device *vdev, unsigned nvqs, struct virtqueue *vqs[], @@ -381,17 +382,15 @@ int vp_find_vqs(struct virtio_device *vdev, unsigned nvqs, int err; /* Try MSI-X with one vector per queue. */ - err = vp_try_to_find_vqs(vdev, nvqs, vqs, callbacks, names, true, true); + err = vp_find_vqs_msix(vdev, nvqs, vqs, callbacks, names, true); if (!err) return 0; /* Fallback: MSI-X with one vector for config, one shared for queues. */ - err = vp_try_to_find_vqs(vdev, nvqs, vqs, callbacks, names, - true, false); + err = vp_find_vqs_msix(vdev, nvqs, vqs, callbacks, names, false); if (!err) return 0; /* Finally fall back to regular interrupts. */ - return vp_try_to_find_vqs(vdev, nvqs, vqs, callbacks, names, - false, false); + return vp_find_vqs_intx(vdev, nvqs, vqs, callbacks, names); } const char *vp_bus_name(struct virtio_device *vdev) @@ -419,7 +418,7 @@ int vp_set_vq_affinity(struct virtqueue *vq, int cpu) if (vp_dev->msix_enabled) { mask = vp_dev->msix_affinity_masks[info->msix_vector]; - irq = vp_dev->msix_entries[info->msix_vector].vector; + irq = pci_irq_vector(vp_dev->pci_dev, info->msix_vector); if (cpu == -1) irq_set_affinity_hint(irq, NULL); else { diff --git a/drivers/virtio/virtio_pci_common.h b/drivers/virtio/virtio_pci_common.h index 28263200ed42..b2f666250ae0 100644 --- a/drivers/virtio/virtio_pci_common.h +++ b/drivers/virtio/virtio_pci_common.h @@ -85,7 +85,6 @@ struct virtio_pci_device { /* MSI-X support */ int msix_enabled; int intx_enabled; - struct msix_entry *msix_entries; cpumask_var_t *msix_affinity_masks; /* Name strings for interrupts. This size should be enough, * and I'm too lazy to allocate each name separately. */ diff --git a/drivers/virtio/virtio_pci_modern.c b/drivers/virtio/virtio_pci_modern.c index e76bd91a29da..4bf7ab375894 100644 --- a/drivers/virtio/virtio_pci_modern.c +++ b/drivers/virtio/virtio_pci_modern.c @@ -33,12 +33,12 @@ static inline u8 vp_ioread8(u8 __iomem *addr) { return ioread8(addr); } -static inline u16 vp_ioread16 (u16 __iomem *addr) +static inline u16 vp_ioread16 (__le16 __iomem *addr) { return ioread16(addr); } -static inline u32 vp_ioread32(u32 __iomem *addr) +static inline u32 vp_ioread32(__le32 __iomem *addr) { return ioread32(addr); } @@ -48,12 +48,12 @@ static inline void vp_iowrite8(u8 value, u8 __iomem *addr) iowrite8(value, addr); } -static inline void vp_iowrite16(u16 value, u16 __iomem *addr) +static inline void vp_iowrite16(u16 value, __le16 __iomem *addr) { iowrite16(value, addr); } -static inline void vp_iowrite32(u32 value, u32 __iomem *addr) +static inline void vp_iowrite32(u32 value, __le32 __iomem *addr) { iowrite32(value, addr); } diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c index 489bfc61cf30..409aeaa49246 100644 --- a/drivers/virtio/virtio_ring.c +++ b/drivers/virtio/virtio_ring.c @@ -420,7 +420,7 @@ unmap_release: if (i == err_idx) break; vring_unmap_one(vq, &desc[i]); - i = vq->vring.desc[i].next; + i = virtio16_to_cpu(_vq->vdev, vq->vring.desc[i].next); } vq->vq.num_free += total_sg; @@ -601,7 +601,7 @@ EXPORT_SYMBOL_GPL(virtqueue_kick); static void detach_buf(struct vring_virtqueue *vq, unsigned int head) { unsigned int i, j; - u16 nextflag = cpu_to_virtio16(vq->vq.vdev, VRING_DESC_F_NEXT); + __virtio16 nextflag = cpu_to_virtio16(vq->vq.vdev, VRING_DESC_F_NEXT); /* Clear data ptr. */ vq->desc_state[head].data = NULL; @@ -649,7 +649,7 @@ static inline bool more_used(const struct vring_virtqueue *vq) * @vq: the struct virtqueue we're talking about. * @len: the length written into the buffer * - * If the driver wrote data into the buffer, @len will be set to the + * If the device wrote data into the buffer, @len will be set to the * amount written. This means you don't need to clear the buffer * beforehand to ensure there's no data leakage in the case of short * writes. |