diff options
Diffstat (limited to 'drivers/misc/mei')
| -rw-r--r-- | drivers/misc/mei/client.c | 189 | ||||
| -rw-r--r-- | drivers/misc/mei/hbm.c | 14 | ||||
| -rw-r--r-- | drivers/misc/mei/hw.h | 93 | ||||
| -rw-r--r-- | drivers/misc/mei/interrupt.c | 113 | ||||
| -rw-r--r-- | drivers/misc/mei/mei_dev.h | 11 |
5 files changed, 334 insertions, 86 deletions
diff --git a/drivers/misc/mei/client.c b/drivers/misc/mei/client.c index 2572887d99b6..a52799590dc7 100644 --- a/drivers/misc/mei/client.c +++ b/drivers/misc/mei/client.c @@ -378,6 +378,8 @@ static struct mei_cl_cb *mei_io_cb_init(struct mei_cl *cl, cb->cl = cl; cb->buf_idx = 0; cb->fop_type = type; + cb->vtag = 0; + return cb; } @@ -1518,21 +1520,67 @@ nortpm: return rets; } +static inline u8 mei_ext_hdr_set_vtag(struct mei_ext_hdr *ext, u8 vtag) +{ + ext->type = MEI_EXT_HDR_VTAG; + ext->ext_payload[0] = vtag; + ext->length = mei_data2slots(sizeof(*ext)); + return ext->length; +} + /** - * mei_msg_hdr_init - initialize mei message header + * mei_msg_hdr_init - allocate and initialize mei message header * - * @mei_hdr: mei message header * @cb: message callback structure + * + * Return: a pointer to initialized header */ -static void mei_msg_hdr_init(struct mei_msg_hdr *mei_hdr, struct mei_cl_cb *cb) +static struct mei_msg_hdr *mei_msg_hdr_init(const struct mei_cl_cb *cb) { + size_t hdr_len; + struct mei_ext_meta_hdr *meta; + struct mei_ext_hdr *ext; + struct mei_msg_hdr *mei_hdr; + bool is_ext, is_vtag; + + if (!cb) + return ERR_PTR(-EINVAL); + + /* Extended header for vtag is attached only on the first fragment */ + is_vtag = (cb->vtag && cb->buf_idx == 0); + is_ext = is_vtag; + + /* Compute extended header size */ + hdr_len = sizeof(*mei_hdr); + + if (!is_ext) + goto setup_hdr; + + hdr_len += sizeof(*meta); + if (is_vtag) + hdr_len += sizeof(*ext); + +setup_hdr: + mei_hdr = kzalloc(hdr_len, GFP_KERNEL); + if (!mei_hdr) + return ERR_PTR(-ENOMEM); + mei_hdr->host_addr = mei_cl_host_addr(cb->cl); mei_hdr->me_addr = mei_cl_me_id(cb->cl); - mei_hdr->length = 0; - mei_hdr->reserved = 0; - mei_hdr->msg_complete = 0; - mei_hdr->dma_ring = 0; mei_hdr->internal = cb->internal; + mei_hdr->extended = is_ext; + + if (!is_ext) + goto out; + + meta = (struct mei_ext_meta_hdr *)mei_hdr->extension; + if (is_vtag) { + meta->count++; + meta->size += mei_ext_hdr_set_vtag(meta->hdrs, cb->vtag); + } +out: + mei_hdr->length = hdr_len - sizeof(*mei_hdr); + return mei_hdr; } /** @@ -1550,10 +1598,11 @@ int mei_cl_irq_write(struct mei_cl *cl, struct mei_cl_cb *cb, { struct mei_device *dev; struct mei_msg_data *buf; - struct mei_msg_hdr mei_hdr; - size_t hdr_len = sizeof(mei_hdr); - size_t len; + struct mei_msg_hdr *mei_hdr = NULL; + size_t hdr_len; size_t hbuf_len, dr_len; + size_t buf_len; + size_t data_len; int hbuf_slots; u32 dr_slots; u32 dma_len; @@ -1579,7 +1628,7 @@ int mei_cl_irq_write(struct mei_cl *cl, struct mei_cl_cb *cb, return 0; } - len = buf->size - cb->buf_idx; + buf_len = buf->size - cb->buf_idx; data = buf->data + cb->buf_idx; hbuf_slots = mei_hbuf_empty_slots(dev); if (hbuf_slots < 0) { @@ -1591,42 +1640,54 @@ int mei_cl_irq_write(struct mei_cl *cl, struct mei_cl_cb *cb, dr_slots = mei_dma_ring_empty_slots(dev); dr_len = mei_slots2data(dr_slots); - mei_msg_hdr_init(&mei_hdr, cb); + mei_hdr = mei_msg_hdr_init(cb); + if (IS_ERR(mei_hdr)) { + rets = PTR_ERR(mei_hdr); + mei_hdr = NULL; + goto err; + } + + cl_dbg(dev, cl, "Extended Header %d vtag = %d\n", + mei_hdr->extended, cb->vtag); + + hdr_len = sizeof(*mei_hdr) + mei_hdr->length; /** * Split the message only if we can write the whole host buffer * otherwise wait for next time the host buffer is empty. */ - if (len + hdr_len <= hbuf_len) { - mei_hdr.length = len; - mei_hdr.msg_complete = 1; + if (hdr_len + buf_len <= hbuf_len) { + data_len = buf_len; + mei_hdr->msg_complete = 1; } else if (dr_slots && hbuf_len >= hdr_len + sizeof(dma_len)) { - mei_hdr.dma_ring = 1; - if (len > dr_len) - len = dr_len; + mei_hdr->dma_ring = 1; + if (buf_len > dr_len) + buf_len = dr_len; else - mei_hdr.msg_complete = 1; + mei_hdr->msg_complete = 1; - mei_hdr.length = sizeof(dma_len); - dma_len = len; + data_len = sizeof(dma_len); + dma_len = buf_len; data = &dma_len; } else if ((u32)hbuf_slots == mei_hbuf_depth(dev)) { - len = hbuf_len - hdr_len; - mei_hdr.length = len; + buf_len = hbuf_len - hdr_len; + data_len = buf_len; } else { + kfree(mei_hdr); return 0; } + mei_hdr->length += data_len; - if (mei_hdr.dma_ring) - mei_dma_ring_write(dev, buf->data + cb->buf_idx, len); + if (mei_hdr->dma_ring) + mei_dma_ring_write(dev, buf->data + cb->buf_idx, buf_len); + rets = mei_write_message(dev, mei_hdr, hdr_len, data, data_len); - rets = mei_write_message(dev, &mei_hdr, hdr_len, data, mei_hdr.length); if (rets) goto err; cl->status = 0; cl->writing_state = MEI_WRITING; - cb->buf_idx += len; + cb->buf_idx += buf_len; if (first_chunk) { if (mei_cl_tx_flow_ctrl_creds_reduce(cl)) { @@ -1635,12 +1696,14 @@ int mei_cl_irq_write(struct mei_cl *cl, struct mei_cl_cb *cb, } } - if (mei_hdr.msg_complete) + if (mei_hdr->msg_complete) list_move_tail(&cb->list, &dev->write_waiting_list); + kfree(mei_hdr); return 0; err: + kfree(mei_hdr); cl->status = rets; list_move_tail(&cb->list, cmpl_list); return rets; @@ -1659,9 +1722,11 @@ ssize_t mei_cl_write(struct mei_cl *cl, struct mei_cl_cb *cb) { struct mei_device *dev; struct mei_msg_data *buf; - struct mei_msg_hdr mei_hdr; - size_t hdr_len = sizeof(mei_hdr); - size_t len, hbuf_len, dr_len; + struct mei_msg_hdr *mei_hdr = NULL; + size_t hdr_len; + size_t hbuf_len, dr_len; + size_t buf_len; + size_t data_len; int hbuf_slots; u32 dr_slots; u32 dma_len; @@ -1678,9 +1743,9 @@ ssize_t mei_cl_write(struct mei_cl *cl, struct mei_cl_cb *cb) dev = cl->dev; buf = &cb->buf; - len = buf->size; + buf_len = buf->size; - cl_dbg(dev, cl, "len=%zd\n", len); + cl_dbg(dev, cl, "buf_len=%zd\n", buf_len); blocking = cb->blocking; data = buf->data; @@ -1700,17 +1765,27 @@ ssize_t mei_cl_write(struct mei_cl *cl, struct mei_cl_cb *cb) if (rets < 0) goto err; - mei_msg_hdr_init(&mei_hdr, cb); + mei_hdr = mei_msg_hdr_init(cb); + if (IS_ERR(mei_hdr)) { + rets = -PTR_ERR(mei_hdr); + mei_hdr = NULL; + goto err; + } + + cl_dbg(dev, cl, "Extended Header %d vtag = %d\n", + mei_hdr->extended, cb->vtag); + + hdr_len = sizeof(*mei_hdr) + mei_hdr->length; if (rets == 0) { cl_dbg(dev, cl, "No flow control credentials: not sending.\n"); - rets = len; + rets = buf_len; goto out; } if (!mei_hbuf_acquire(dev)) { cl_dbg(dev, cl, "Cannot acquire the host buffer: not sending.\n"); - rets = len; + rets = buf_len; goto out; } @@ -1724,29 +1799,30 @@ ssize_t mei_cl_write(struct mei_cl *cl, struct mei_cl_cb *cb) dr_slots = mei_dma_ring_empty_slots(dev); dr_len = mei_slots2data(dr_slots); - if (len + hdr_len <= hbuf_len) { - mei_hdr.length = len; - mei_hdr.msg_complete = 1; + if (hdr_len + buf_len <= hbuf_len) { + data_len = buf_len; + mei_hdr->msg_complete = 1; } else if (dr_slots && hbuf_len >= hdr_len + sizeof(dma_len)) { - mei_hdr.dma_ring = 1; - if (len > dr_len) - len = dr_len; + mei_hdr->dma_ring = 1; + if (buf_len > dr_len) + buf_len = dr_len; else - mei_hdr.msg_complete = 1; + mei_hdr->msg_complete = 1; - mei_hdr.length = sizeof(dma_len); - dma_len = len; + data_len = sizeof(dma_len); + dma_len = buf_len; data = &dma_len; } else { - len = hbuf_len - hdr_len; - mei_hdr.length = len; + buf_len = hbuf_len - hdr_len; + data_len = buf_len; } - if (mei_hdr.dma_ring) - mei_dma_ring_write(dev, buf->data, len); + mei_hdr->length += data_len; + + if (mei_hdr->dma_ring) + mei_dma_ring_write(dev, buf->data, buf_len); + rets = mei_write_message(dev, mei_hdr, hdr_len, data, data_len); - rets = mei_write_message(dev, &mei_hdr, hdr_len, - data, mei_hdr.length); if (rets) goto err; @@ -1755,12 +1831,12 @@ ssize_t mei_cl_write(struct mei_cl *cl, struct mei_cl_cb *cb) goto err; cl->writing_state = MEI_WRITING; - cb->buf_idx = len; + cb->buf_idx = buf_len; /* restore return value */ - len = buf->size; + buf_len = buf->size; out: - if (mei_hdr.msg_complete) + if (mei_hdr->msg_complete) mei_tx_cb_enqueue(cb, &dev->write_waiting_list); else mei_tx_cb_enqueue(cb, &dev->write_list); @@ -1785,7 +1861,7 @@ out: } } - rets = len; + rets = buf_len; err: cl_dbg(dev, cl, "rpm: autosuspend\n"); pm_runtime_mark_last_busy(dev->dev); @@ -1793,10 +1869,11 @@ err: free: mei_io_cb_free(cb); + kfree(mei_hdr); + return rets; } - /** * mei_cl_complete - processes completed operation for a client * diff --git a/drivers/misc/mei/hbm.c b/drivers/misc/mei/hbm.c index 0513b8a4ea88..a97eb5d47705 100644 --- a/drivers/misc/mei/hbm.c +++ b/drivers/misc/mei/hbm.c @@ -125,19 +125,15 @@ void mei_hbm_reset(struct mei_device *dev) /** * mei_hbm_hdr - construct hbm header * - * @hdr: hbm header + * @mei_hdr: hbm header * @length: payload length */ -static inline void mei_hbm_hdr(struct mei_msg_hdr *hdr, size_t length) +static inline void mei_hbm_hdr(struct mei_msg_hdr *mei_hdr, size_t length) { - hdr->host_addr = 0; - hdr->me_addr = 0; - hdr->length = length; - hdr->msg_complete = 1; - hdr->dma_ring = 0; - hdr->reserved = 0; - hdr->internal = 0; + memset(mei_hdr, 0, sizeof(*mei_hdr)); + mei_hdr->length = length; + mei_hdr->msg_complete = 1; } /** diff --git a/drivers/misc/mei/hw.h b/drivers/misc/mei/hw.h index ea0a2e459282..c3c628132b50 100644 --- a/drivers/misc/mei/hw.h +++ b/drivers/misc/mei/hw.h @@ -197,17 +197,103 @@ enum mei_cl_connect_status { /* * Client Disconnect Status */ -enum mei_cl_disconnect_status { +enum mei_cl_disconnect_status { MEI_CL_DISCONN_SUCCESS = MEI_HBMS_SUCCESS }; /** + * enum mei_ext_hdr_type - extended header type used in + * extended header TLV + * + * @MEI_EXT_HDR_NONE: sentinel + * @MEI_EXT_HDR_VTAG: vtag header + */ +enum mei_ext_hdr_type { + MEI_EXT_HDR_NONE = 0, + MEI_EXT_HDR_VTAG = 1, +}; + +/** + * struct mei_ext_hdr - extend header descriptor (TLV) + * @type: enum mei_ext_hdr_type + * @length: length excluding descriptor + * @ext_payload: payload of the specific extended header + * @hdr: place holder for actual header + */ +struct mei_ext_hdr { + u8 type; + u8 length; + u8 ext_payload[2]; + u8 hdr[0]; +}; + +/** + * struct mei_ext_meta_hdr - extend header meta data + * @count: number of headers + * @size: total size of the extended header list excluding meta header + * @reserved: reserved + * @hdrs: extended headers TLV list + */ +struct mei_ext_meta_hdr { + u8 count; + u8 size; + u8 reserved[2]; + struct mei_ext_hdr hdrs[0]; +}; + +/* + * Extended header iterator functions + */ +/** + * mei_ext_hdr - extended header iterator begin + * + * @meta: meta header of the extended header list + * + * Return: + * The first extended header + */ +static inline struct mei_ext_hdr *mei_ext_begin(struct mei_ext_meta_hdr *meta) +{ + return meta->hdrs; +} + +/** + * mei_ext_last - check if the ext is the last one in the TLV list + * + * @meta: meta header of the extended header list + * @ext: a meta header on the list + * + * Return: true if ext is the last header on the list + */ +static inline bool mei_ext_last(struct mei_ext_meta_hdr *meta, + struct mei_ext_hdr *ext) +{ + return (u8 *)ext >= (u8 *)meta + sizeof(*meta) + (meta->size * 4); +} + +/** + *mei_ext_next - following extended header on the TLV list + * + * @ext: current extend header + * + * Context: The function does not check for the overflows, + * one should call mei_ext_last before. + * + * Return: The following extend header after @ext + */ +static inline struct mei_ext_hdr *mei_ext_next(struct mei_ext_hdr *ext) +{ + return (struct mei_ext_hdr *)(ext->hdr + (ext->length * 4)); +} + +/** * struct mei_msg_hdr - MEI BUS Interface Section * * @me_addr: device address * @host_addr: host address * @length: message length * @reserved: reserved + * @extended: message has extended header * @dma_ring: message is on dma ring * @internal: message is internal * @msg_complete: last packet of the message @@ -217,7 +303,8 @@ struct mei_msg_hdr { u32 me_addr:8; u32 host_addr:8; u32 length:9; - u32 reserved:4; + u32 reserved:3; + u32 extended:1; u32 dma_ring:1; u32 internal:1; u32 msg_complete:1; @@ -227,8 +314,6 @@ struct mei_msg_hdr { /* The length is up to 9 bits */ #define MEI_MSG_MAX_LEN_MASK GENMASK(9, 0) -#define MEI_MSG_HDR_MAX 2 - struct mei_bus_message { u8 hbm_cmd; u8 data[]; diff --git a/drivers/misc/mei/interrupt.c b/drivers/misc/mei/interrupt.c index c70a8c74cc57..326955b04fda 100644 --- a/drivers/misc/mei/interrupt.c +++ b/drivers/misc/mei/interrupt.c @@ -61,16 +61,21 @@ static inline int mei_cl_hbm_equal(struct mei_cl *cl, * * @dev: mei device * @hdr: message header + * @discard_len: the length of the message to discard (excluding header) */ -static void mei_irq_discard_msg(struct mei_device *dev, struct mei_msg_hdr *hdr) +static void mei_irq_discard_msg(struct mei_device *dev, struct mei_msg_hdr *hdr, + size_t discard_len) { - if (hdr->dma_ring) - mei_dma_ring_read(dev, NULL, hdr->extension[0]); + if (hdr->dma_ring) { + mei_dma_ring_read(dev, NULL, + hdr->extension[dev->rd_msg_hdr_count - 2]); + discard_len = 0; + } /* * no need to check for size as it is guarantied * that length fits into rd_msg_buf */ - mei_read_slots(dev, dev->rd_msg_buf, hdr->length); + mei_read_slots(dev, dev->rd_msg_buf, discard_len); dev_dbg(dev->dev, "discarding message " MEI_HDR_FMT "\n", MEI_HDR_PRM(hdr)); } @@ -80,18 +85,29 @@ static void mei_irq_discard_msg(struct mei_device *dev, struct mei_msg_hdr *hdr) * * @cl: reading client * @mei_hdr: header of mei client message + * @meta: extend meta header * @cmpl_list: completion list * * Return: always 0 */ static int mei_cl_irq_read_msg(struct mei_cl *cl, struct mei_msg_hdr *mei_hdr, + struct mei_ext_meta_hdr *meta, struct list_head *cmpl_list) { struct mei_device *dev = cl->dev; struct mei_cl_cb *cb; + size_t buf_sz; u32 length; + int ext_len; + + length = mei_hdr->length; + ext_len = 0; + if (mei_hdr->extended) { + ext_len = sizeof(*meta) + mei_slots2data(meta->size); + length -= ext_len; + } cb = list_first_entry_or_null(&cl->rd_pending, struct mei_cl_cb, list); if (!cb) { @@ -105,13 +121,50 @@ static int mei_cl_irq_read_msg(struct mei_cl *cl, list_add_tail(&cb->list, &cl->rd_pending); } + if (mei_hdr->extended) { + struct mei_ext_hdr *ext; + struct mei_ext_hdr *vtag = NULL; + + ext = mei_ext_begin(meta); + do { + switch (ext->type) { + case MEI_EXT_HDR_VTAG: + vtag = ext; + break; + case MEI_EXT_HDR_NONE: + fallthrough; + default: + cb->status = -EPROTO; + break; + } + + ext = mei_ext_next(ext); + } while (!mei_ext_last(meta, ext)); + + if (!vtag) { + cl_dbg(dev, cl, "vtag not found in extended header.\n"); + cb->status = -EPROTO; + goto discard; + } + + cl_dbg(dev, cl, "vtag: %d\n", vtag->ext_payload[0]); + if (cb->vtag && cb->vtag != vtag->ext_payload[0]) { + cl_err(dev, cl, "mismatched tag: %d != %d\n", + cb->vtag, vtag->ext_payload[0]); + cb->status = -EPROTO; + goto discard; + } + cb->vtag = vtag->ext_payload[0]; + } + if (!mei_cl_is_connected(cl)) { cl_dbg(dev, cl, "not connected\n"); cb->status = -ENODEV; goto discard; } - length = mei_hdr->dma_ring ? mei_hdr->extension[0] : mei_hdr->length; + if (mei_hdr->dma_ring) + length = mei_hdr->extension[mei_data2slots(ext_len)]; buf_sz = length + cb->buf_idx; /* catch for integer overflow */ @@ -129,11 +182,13 @@ static int mei_cl_irq_read_msg(struct mei_cl *cl, goto discard; } - if (mei_hdr->dma_ring) + if (mei_hdr->dma_ring) { mei_dma_ring_read(dev, cb->buf.data + cb->buf_idx, length); - - /* for DMA read 0 length to generate an interrupt to the device */ - mei_read_slots(dev, cb->buf.data + cb->buf_idx, mei_hdr->length); + /* for DMA read 0 length to generate interrupt to the device */ + mei_read_slots(dev, cb->buf.data + cb->buf_idx, 0); + } else { + mei_read_slots(dev, cb->buf.data + cb->buf_idx, length); + } cb->buf_idx += length; @@ -150,7 +205,7 @@ static int mei_cl_irq_read_msg(struct mei_cl *cl, discard: if (cb) list_move_tail(&cb->list, cmpl_list); - mei_irq_discard_msg(dev, mei_hdr); + mei_irq_discard_msg(dev, mei_hdr, length); return 0; } @@ -265,11 +320,16 @@ int mei_irq_read_handler(struct mei_device *dev, struct list_head *cmpl_list, s32 *slots) { struct mei_msg_hdr *mei_hdr; + struct mei_ext_meta_hdr *meta_hdr = NULL; struct mei_cl *cl; int ret; + u32 ext_meta_hdr_u32; + int i; + int ext_hdr_end; if (!dev->rd_msg_hdr[0]) { dev->rd_msg_hdr[0] = mei_read_hdr(dev); + dev->rd_msg_hdr_count = 1; (*slots)--; dev_dbg(dev->dev, "slots =%08x.\n", *slots); @@ -292,10 +352,34 @@ int mei_irq_read_handler(struct mei_device *dev, goto end; } + ext_hdr_end = 1; + + if (mei_hdr->extended) { + if (!dev->rd_msg_hdr[1]) { + ext_meta_hdr_u32 = mei_read_hdr(dev); + dev->rd_msg_hdr[1] = ext_meta_hdr_u32; + dev->rd_msg_hdr_count++; + (*slots)--; + dev_dbg(dev->dev, "extended header is %08x\n", + ext_meta_hdr_u32); + } + meta_hdr = ((struct mei_ext_meta_hdr *) + dev->rd_msg_hdr + 1); + ext_hdr_end = meta_hdr->size + 2; + for (i = dev->rd_msg_hdr_count; i < ext_hdr_end; i++) { + dev->rd_msg_hdr[i] = mei_read_hdr(dev); + dev_dbg(dev->dev, "extended header %d is %08x\n", i, + dev->rd_msg_hdr[i]); + dev->rd_msg_hdr_count++; + (*slots)--; + } + } + if (mei_hdr->dma_ring) { - dev->rd_msg_hdr[1] = mei_read_hdr(dev); + dev->rd_msg_hdr[ext_hdr_end] = mei_read_hdr(dev); + dev->rd_msg_hdr_count++; (*slots)--; - mei_hdr->length = 0; + mei_hdr->length -= sizeof(dev->rd_msg_hdr[ext_hdr_end]); } /* HBM message */ @@ -326,7 +410,7 @@ int mei_irq_read_handler(struct mei_device *dev, */ if (hdr_is_fixed(mei_hdr) || dev->dev_state == MEI_DEV_POWER_DOWN) { - mei_irq_discard_msg(dev, mei_hdr); + mei_irq_discard_msg(dev, mei_hdr, mei_hdr->length); ret = 0; goto reset_slots; } @@ -336,12 +420,13 @@ int mei_irq_read_handler(struct mei_device *dev, goto end; } - ret = mei_cl_irq_read_msg(cl, mei_hdr, cmpl_list); + ret = mei_cl_irq_read_msg(cl, mei_hdr, meta_hdr, cmpl_list); reset_slots: /* reset the number of slots and header */ memset(dev->rd_msg_hdr, 0, sizeof(dev->rd_msg_hdr)); + dev->rd_msg_hdr_count = 0; *slots = mei_count_full_read_slots(dev); if (*slots == -EOVERFLOW) { /* overflow - reset */ diff --git a/drivers/misc/mei/mei_dev.h b/drivers/misc/mei/mei_dev.h index f80cc6463f18..fefa5b53a6d0 100644 --- a/drivers/misc/mei/mei_dev.h +++ b/drivers/misc/mei/mei_dev.h @@ -174,6 +174,7 @@ struct mei_cl; * @fop_type: file operation type * @buf: buffer for data associated with the callback * @buf_idx: last read index + * @vtag: virtual tag * @fp: pointer to file structure * @status: io status of the cb * @internal: communication between driver and FW flag @@ -185,6 +186,7 @@ struct mei_cl_cb { enum mei_cb_file_ops fop_type; struct mei_msg_data buf; size_t buf_idx; + u8 vtag; const struct file *fp; int status; u32 internal:1; @@ -413,6 +415,7 @@ struct mei_fw_version { * * @rd_msg_buf : control messages buffer * @rd_msg_hdr : read message header storage + * @rd_msg_hdr_count : how many dwords were already read from header * * @hbuf_is_ready : query if the host host/write buffer is ready * @dr_dscr: DMA ring descriptors: TX, RX, and CTRL @@ -496,7 +499,8 @@ struct mei_device { #endif /* CONFIG_PM */ unsigned char rd_msg_buf[MEI_RD_MSG_BUF_SIZE]; - u32 rd_msg_hdr[MEI_MSG_HDR_MAX]; + u32 rd_msg_hdr[MEI_RD_MSG_BUF_SIZE]; + int rd_msg_hdr_count; /* write buffer */ bool hbuf_is_ready; @@ -750,10 +754,11 @@ static inline void mei_dbgfs_deregister(struct mei_device *dev) {} int mei_register(struct mei_device *dev, struct device *parent); void mei_deregister(struct mei_device *dev); -#define MEI_HDR_FMT "hdr:host=%02d me=%02d len=%d dma=%1d internal=%1d comp=%1d" +#define MEI_HDR_FMT "hdr:host=%02d me=%02d len=%d dma=%1d ext=%1d internal=%1d comp=%1d" #define MEI_HDR_PRM(hdr) \ (hdr)->host_addr, (hdr)->me_addr, \ - (hdr)->length, (hdr)->dma_ring, (hdr)->internal, (hdr)->msg_complete + (hdr)->length, (hdr)->dma_ring, (hdr)->extended, \ + (hdr)->internal, (hdr)->msg_complete ssize_t mei_fw_status2str(struct mei_fw_status *fw_sts, char *buf, size_t len); /** |