diff options
Diffstat (limited to 'drivers/s390/scsi/zfcp_qdio.h')
| -rw-r--r-- | drivers/s390/scsi/zfcp_qdio.h | 42 |
1 files changed, 19 insertions, 23 deletions
diff --git a/drivers/s390/scsi/zfcp_qdio.h b/drivers/s390/scsi/zfcp_qdio.h index 497cd379b0d1..8f7d2ae94441 100644 --- a/drivers/s390/scsi/zfcp_qdio.h +++ b/drivers/s390/scsi/zfcp_qdio.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ /* * zfcp device driver * @@ -9,6 +10,7 @@ #ifndef ZFCP_QDIO_H #define ZFCP_QDIO_H +#include <linux/interrupt.h> #include <asm/qdio.h> #define ZFCP_QDIO_SBALE_LEN PAGE_SIZE @@ -28,7 +30,12 @@ * @req_q_util: used for accounting * @req_q_full: queue full incidents * @req_q_wq: used to wait for SBAL availability + * @irq_tasklet: used for QDIO interrupt processing + * @request_tasklet: used for Request Queue completion processing + * @request_timer: used to trigger the Request Queue completion processing * @adapter: adapter used in conjunction with this qdio structure + * @max_sbale_per_sbal: qdio limit per sbal + * @max_sbale_per_req: qdio limit per request */ struct zfcp_qdio { struct qdio_buffer *res_q[QDIO_MAX_BUFFERS_PER_Q]; @@ -41,6 +48,9 @@ struct zfcp_qdio { u64 req_q_util; atomic_t req_q_full; wait_queue_head_t req_q_wq; + struct tasklet_struct irq_tasklet; + struct tasklet_struct request_tasklet; + struct timer_list request_timer; struct zfcp_adapter *adapter; u16 max_sbale_per_sbal; u16 max_sbale_per_req; @@ -54,7 +64,6 @@ struct zfcp_qdio { * @sbal_last: last sbal for this request * @sbal_limit: last possible sbal for this request * @sbale_curr: current sbale at creation of this request - * @sbal_response: sbal used in interrupt * @qdio_outb_usage: usage of outbound queue */ struct zfcp_qdio_req { @@ -64,14 +73,13 @@ struct zfcp_qdio_req { u8 sbal_last; u8 sbal_limit; u8 sbale_curr; - u8 sbal_response; u16 qdio_outb_usage; }; /** * zfcp_qdio_sbale_req - return pointer to sbale on req_q for a request * @qdio: pointer to struct zfcp_qdio - * @q_rec: pointer to struct zfcp_qdio_req + * @q_req: pointer to struct zfcp_qdio_req * Returns: pointer to qdio_buffer_element (sbale) structure */ static inline struct qdio_buffer_element * @@ -83,7 +91,7 @@ zfcp_qdio_sbale_req(struct zfcp_qdio *qdio, struct zfcp_qdio_req *q_req) /** * zfcp_qdio_sbale_curr - return current sbale on req_q for a request * @qdio: pointer to struct zfcp_qdio - * @fsf_req: pointer to struct zfcp_fsf_req + * @q_req: pointer to struct zfcp_qdio_req * Returns: pointer to qdio_buffer_element (sbale) structure */ static inline struct qdio_buffer_element * @@ -107,7 +115,7 @@ zfcp_qdio_sbale_curr(struct zfcp_qdio *qdio, struct zfcp_qdio_req *q_req) */ static inline void zfcp_qdio_req_init(struct zfcp_qdio *qdio, struct zfcp_qdio_req *q_req, - unsigned long req_id, u8 sbtype, void *data, u32 len) + u64 req_id, u8 sbtype, void *data, u32 len) { struct qdio_buffer_element *sbale; int count = min(atomic_read(&qdio->req_q_free), @@ -121,14 +129,14 @@ void zfcp_qdio_req_init(struct zfcp_qdio *qdio, struct zfcp_qdio_req *q_req, % QDIO_MAX_BUFFERS_PER_Q; sbale = zfcp_qdio_sbale_req(qdio, q_req); - sbale->addr = (void *) req_id; + sbale->addr = u64_to_dma64(req_id); sbale->eflags = 0; sbale->sflags = SBAL_SFLAGS0_COMMAND | sbtype; if (unlikely(!data)) return; sbale++; - sbale->addr = data; + sbale->addr = virt_to_dma64(data); sbale->length = len; } @@ -136,6 +144,8 @@ void zfcp_qdio_req_init(struct zfcp_qdio *qdio, struct zfcp_qdio_req *q_req, * zfcp_qdio_fill_next - Fill next sbale, only for single sbal requests * @qdio: pointer to struct zfcp_qdio * @q_req: pointer to struct zfcp_queue_req + * @data: pointer to data + * @len: length of data * * This is only required for single sbal requests, calling it when * wrapping around to the next sbal is a bug. @@ -149,7 +159,7 @@ void zfcp_qdio_fill_next(struct zfcp_qdio *qdio, struct zfcp_qdio_req *q_req, BUG_ON(q_req->sbale_curr == qdio->max_sbale_per_sbal - 1); q_req->sbale_curr++; sbale = zfcp_qdio_sbale_curr(qdio, q_req); - sbale->addr = data; + sbale->addr = virt_to_dma64(data); sbale->length = len; } @@ -183,6 +193,7 @@ int zfcp_qdio_sg_one_sbale(struct scatterlist *sg) /** * zfcp_qdio_skip_to_last_sbale - skip to last sbale in sbal + * @qdio: pointer to struct zfcp_qdio * @q_req: The current zfcp_qdio_req */ static inline @@ -225,21 +236,6 @@ void zfcp_qdio_set_data_div(struct zfcp_qdio *qdio, } /** - * zfcp_qdio_sbale_count - count sbale used - * @sg: pointer to struct scatterlist - */ -static inline -unsigned int zfcp_qdio_sbale_count(struct scatterlist *sg) -{ - unsigned int count = 0; - - for (; sg; sg = sg_next(sg)) - count++; - - return count; -} - -/** * zfcp_qdio_real_bytes - count bytes used * @sg: pointer to struct scatterlist */ |