diff options
Diffstat (limited to 'drivers/s390')
| -rw-r--r-- | drivers/s390/cio/qdio.h | 29 | ||||
| -rw-r--r-- | drivers/s390/cio/qdio_debug.c | 3 | ||||
| -rw-r--r-- | drivers/s390/cio/qdio_main.c | 203 | ||||
| -rw-r--r-- | drivers/s390/cio/qdio_setup.c | 83 | ||||
| -rw-r--r-- | drivers/s390/cio/qdio_thinint.c | 88 | ||||
| -rw-r--r-- | drivers/s390/net/qeth_core_main.c | 30 |
6 files changed, 359 insertions, 77 deletions
diff --git a/drivers/s390/cio/qdio.h b/drivers/s390/cio/qdio.h index e5c966462c5a..2b21f65a8950 100644 --- a/drivers/s390/cio/qdio.h +++ b/drivers/s390/cio/qdio.h @@ -44,6 +44,7 @@ enum qdio_irq_states { #define SLSB_STATE_NOT_INIT 0x0 #define SLSB_STATE_EMPTY 0x1 #define SLSB_STATE_PRIMED 0x2 +#define SLSB_STATE_PENDING 0x3 #define SLSB_STATE_HALTED 0xe #define SLSB_STATE_ERROR 0xf #define SLSB_TYPE_INPUT 0x0 @@ -67,6 +68,8 @@ enum qdio_irq_states { (SLSB_OWNER_PROG | SLSB_TYPE_OUTPUT | SLSB_STATE_NOT_INIT) /* 0xa0 */ #define SLSB_P_OUTPUT_EMPTY \ (SLSB_OWNER_PROG | SLSB_TYPE_OUTPUT | SLSB_STATE_EMPTY) /* 0xa1 */ +#define SLSB_P_OUTPUT_PENDING \ + (SLSB_OWNER_PROG | SLSB_TYPE_OUTPUT | SLSB_STATE_PENDING) /* 0xa3 */ #define SLSB_CU_OUTPUT_PRIMED \ (SLSB_OWNER_CU | SLSB_TYPE_OUTPUT | SLSB_STATE_PRIMED) /* 0x62 */ #define SLSB_P_OUTPUT_HALTED \ @@ -97,6 +100,7 @@ enum qdio_irq_states { #define QDIO_SIGA_WRITE 0x00 #define QDIO_SIGA_READ 0x01 #define QDIO_SIGA_SYNC 0x02 +#define QDIO_SIGA_WRITEQ 0x04 #define QDIO_SIGA_QEBSM_FLAG 0x80 #ifdef CONFIG_64BIT @@ -253,6 +257,12 @@ struct qdio_input_q { struct qdio_output_q { /* PCIs are enabled for the queue */ int pci_out_enabled; + /* cq: use asynchronous output buffers */ + int use_cq; + /* cq: aobs used for particual SBAL */ + struct qaob **aobs; + /* cq: sbal state related to asynchronous operation */ + struct qdio_outbuf_state *sbal_state; /* timer to check for more outbound work */ struct timer_list timer; /* used SBALs before tasklet schedule */ @@ -432,9 +442,20 @@ struct indicator_t { extern struct indicator_t *q_indicators; -static inline int shared_ind(u32 *dsci) +static inline int has_multiple_inq_on_dsci(struct qdio_irq *irq) { - return dsci == &q_indicators[TIQDIO_SHARED_IND].ind; + return irq->nr_input_qs > 1; +} + +static inline int references_shared_dsci(struct qdio_irq *irq) +{ + return irq->dsci == &q_indicators[TIQDIO_SHARED_IND].ind; +} + +static inline int shared_ind(struct qdio_q *q) +{ + struct qdio_irq *i = q->irq_ptr; + return references_shared_dsci(i) || has_multiple_inq_on_dsci(i); } /* prototypes for thin interrupt */ @@ -449,6 +470,7 @@ void tiqdio_free_memory(void); int tiqdio_register_thinints(void); void tiqdio_unregister_thinints(void); + /* prototypes for setup */ void qdio_inbound_processing(unsigned long data); void qdio_outbound_processing(unsigned long data); @@ -469,6 +491,9 @@ int qdio_setup_create_sysfs(struct ccw_device *cdev); void qdio_setup_destroy_sysfs(struct ccw_device *cdev); int qdio_setup_init(void); void qdio_setup_exit(void); +int qdio_enable_async_operation(struct qdio_output_q *q); +void qdio_disable_async_operation(struct qdio_output_q *q); +struct qaob *qdio_allocate_aob(void); int debug_get_buf_state(struct qdio_q *q, unsigned int bufnr, unsigned char *state); diff --git a/drivers/s390/cio/qdio_debug.c b/drivers/s390/cio/qdio_debug.c index 0e615cb912d0..aaf7f935bfd3 100644 --- a/drivers/s390/cio/qdio_debug.c +++ b/drivers/s390/cio/qdio_debug.c @@ -76,6 +76,9 @@ static int qstat_show(struct seq_file *m, void *v) case SLSB_P_OUTPUT_NOT_INIT: seq_printf(m, "N"); break; + case SLSB_P_OUTPUT_PENDING: + seq_printf(m, "P"); + break; case SLSB_P_INPUT_PRIMED: case SLSB_CU_OUTPUT_PRIMED: seq_printf(m, "+"); diff --git a/drivers/s390/cio/qdio_main.c b/drivers/s390/cio/qdio_main.c index 288c9140290e..a7153f2f3aff 100644 --- a/drivers/s390/cio/qdio_main.c +++ b/drivers/s390/cio/qdio_main.c @@ -14,6 +14,7 @@ #include <linux/timer.h> #include <linux/delay.h> #include <linux/gfp.h> +#include <linux/io.h> #include <linux/kernel_stat.h> #include <linux/atomic.h> #include <asm/debug.h> @@ -77,11 +78,13 @@ static inline int do_siga_input(unsigned long schid, unsigned int mask, * Note: For IQDC unicast queues only the highest priority queue is processed. */ static inline int do_siga_output(unsigned long schid, unsigned long mask, - unsigned int *bb, unsigned int fc) + unsigned int *bb, unsigned int fc, + unsigned long aob) { register unsigned long __fc asm("0") = fc; register unsigned long __schid asm("1") = schid; register unsigned long __mask asm("2") = mask; + register unsigned long __aob asm("3") = aob; int cc = QDIO_ERROR_SIGA_ACCESS_EXCEPTION; asm volatile( @@ -90,7 +93,8 @@ static inline int do_siga_output(unsigned long schid, unsigned long mask, " srl %0,28\n" "1:\n" EX_TABLE(0b, 1b) - : "+d" (cc), "+d" (__fc), "+d" (__schid), "+d" (__mask) + : "+d" (cc), "+d" (__fc), "+d" (__schid), "+d" (__mask), + "+d" (__aob) : : "cc", "memory"); *bb = ((unsigned int) __fc) >> 31; return cc; @@ -212,7 +216,7 @@ again: /* returns number of examined buffers and their common state in *state */ static inline int get_buf_states(struct qdio_q *q, unsigned int bufnr, unsigned char *state, unsigned int count, - int auto_ack) + int auto_ack, int merge_pending) { unsigned char __state = 0; int i; @@ -224,9 +228,14 @@ static inline int get_buf_states(struct qdio_q *q, unsigned int bufnr, return qdio_do_eqbs(q, state, bufnr, count, auto_ack); for (i = 0; i < count; i++) { - if (!__state) + if (!__state) { __state = q->slsb.val[bufnr]; - else if (q->slsb.val[bufnr] != __state) + if (merge_pending && __state == SLSB_P_OUTPUT_PENDING) + __state = SLSB_P_OUTPUT_EMPTY; + } else if (merge_pending) { + if ((q->slsb.val[bufnr] & __state) != __state) + break; + } else if (q->slsb.val[bufnr] != __state) break; bufnr = next_buf(bufnr); } @@ -237,7 +246,7 @@ static inline int get_buf_states(struct qdio_q *q, unsigned int bufnr, static inline int get_buf_state(struct qdio_q *q, unsigned int bufnr, unsigned char *state, int auto_ack) { - return get_buf_states(q, bufnr, state, 1, auto_ack); + return get_buf_states(q, bufnr, state, 1, auto_ack, 0); } /* wrap-around safe setting of slsb states, returns number of changed buffers */ @@ -308,19 +317,28 @@ static inline int qdio_siga_sync_q(struct qdio_q *q) return qdio_siga_sync(q, q->mask, 0); } -static int qdio_siga_output(struct qdio_q *q, unsigned int *busy_bit) +static int qdio_siga_output(struct qdio_q *q, unsigned int *busy_bit, + unsigned long aob) { unsigned long schid = *((u32 *) &q->irq_ptr->schid); unsigned int fc = QDIO_SIGA_WRITE; u64 start_time = 0; int retries = 0, cc; + unsigned long laob = 0; + + if (q->u.out.use_cq && aob != 0) { + fc = QDIO_SIGA_WRITEQ; + laob = aob; + } if (is_qebsm(q)) { schid = q->irq_ptr->sch_token; fc |= QDIO_SIGA_QEBSM_FLAG; } again: - cc = do_siga_output(schid, q->mask, busy_bit, fc); + WARN_ON_ONCE((aob && queue_type(q) != QDIO_IQDIO_QFMT) || + (aob && fc != QDIO_SIGA_WRITEQ)); + cc = do_siga_output(schid, q->mask, busy_bit, fc, laob); /* hipersocket busy condition */ if (unlikely(*busy_bit)) { @@ -379,7 +397,7 @@ int debug_get_buf_state(struct qdio_q *q, unsigned int bufnr, { if (need_siga_sync(q)) qdio_siga_sync_q(q); - return get_buf_states(q, bufnr, state, 1, 0); + return get_buf_states(q, bufnr, state, 1, 0, 0); } static inline void qdio_stop_polling(struct qdio_q *q) @@ -507,7 +525,7 @@ static int get_inbound_buffer_frontier(struct qdio_q *q) * No siga sync here, as a PCI or we after a thin interrupt * already sync'ed the queues. */ - count = get_buf_states(q, q->first_to_check, &state, count, 1); + count = get_buf_states(q, q->first_to_check, &state, count, 1, 0); if (!count) goto out; @@ -590,6 +608,107 @@ static inline int qdio_inbound_q_done(struct qdio_q *q) return 0; } +static inline int contains_aobs(struct qdio_q *q) +{ + return !q->is_input_q && q->u.out.use_cq; +} + +static inline void qdio_trace_aob(struct qdio_irq *irq, struct qdio_q *q, + int i, struct qaob *aob) +{ + int tmp; + + DBF_DEV_EVENT(DBF_INFO, irq, "AOB%d:%lx", i, + (unsigned long) virt_to_phys(aob)); + DBF_DEV_EVENT(DBF_INFO, irq, "RES00:%lx", + (unsigned long) aob->res0[0]); + DBF_DEV_EVENT(DBF_INFO, irq, "RES01:%lx", + (unsigned long) aob->res0[1]); + DBF_DEV_EVENT(DBF_INFO, irq, "RES02:%lx", + (unsigned long) aob->res0[2]); + DBF_DEV_EVENT(DBF_INFO, irq, "RES03:%lx", + (unsigned long) aob->res0[3]); + DBF_DEV_EVENT(DBF_INFO, irq, "RES04:%lx", + (unsigned long) aob->res0[4]); + DBF_DEV_EVENT(DBF_INFO, irq, "RES05:%lx", + (unsigned long) aob->res0[5]); + DBF_DEV_EVENT(DBF_INFO, irq, "RES1:%x", aob->res1); + DBF_DEV_EVENT(DBF_INFO, irq, "RES2:%x", aob->res2); + DBF_DEV_EVENT(DBF_INFO, irq, "RES3:%x", aob->res3); + DBF_DEV_EVENT(DBF_INFO, irq, "AORC:%u", aob->aorc); + DBF_DEV_EVENT(DBF_INFO, irq, "FLAGS:%u", aob->flags); + DBF_DEV_EVENT(DBF_INFO, irq, "CBTBS:%u", aob->cbtbs); + DBF_DEV_EVENT(DBF_INFO, irq, "SBC:%u", aob->sb_count); + for (tmp = 0; tmp < QDIO_MAX_ELEMENTS_PER_BUFFER; ++tmp) { + DBF_DEV_EVENT(DBF_INFO, irq, "SBA%d:%lx", tmp, + (unsigned long) aob->sba[tmp]); + DBF_DEV_EVENT(DBF_INFO, irq, "rSBA%d:%lx", tmp, + (unsigned long) q->sbal[i]->element[tmp].addr); + DBF_DEV_EVENT(DBF_INFO, irq, "DC%d:%u", tmp, aob->dcount[tmp]); + DBF_DEV_EVENT(DBF_INFO, irq, "rDC%d:%u", tmp, + q->sbal[i]->element[tmp].length); + } + DBF_DEV_EVENT(DBF_INFO, irq, "USER0:%lx", (unsigned long) aob->user0); + for (tmp = 0; tmp < 2; ++tmp) { + DBF_DEV_EVENT(DBF_INFO, irq, "RES4%d:%lx", tmp, + (unsigned long) aob->res4[tmp]); + } + DBF_DEV_EVENT(DBF_INFO, irq, "USER1:%lx", (unsigned long) aob->user1); + DBF_DEV_EVENT(DBF_INFO, irq, "USER2:%lx", (unsigned long) aob->user2); +} + +static inline void qdio_handle_aobs(struct qdio_q *q, int start, int count) +{ + unsigned char state = 0; + int j, b = start; + + if (!contains_aobs(q)) + return; + + for (j = 0; j < count; ++j) { + get_buf_state(q, b, &state, 0); + if (state == SLSB_P_OUTPUT_PENDING) { + struct qaob *aob = q->u.out.aobs[b]; + if (aob == NULL) + continue; + + BUG_ON(q->u.out.sbal_state == NULL); + q->u.out.sbal_state[b].flags |= + QDIO_OUTBUF_STATE_FLAG_PENDING; + q->u.out.aobs[b] = NULL; + } else if (state == SLSB_P_OUTPUT_EMPTY) { + BUG_ON(q->u.out.sbal_state == NULL); + q->u.out.sbal_state[b].aob = NULL; + } + b = next_buf(b); + } +} + +static inline unsigned long qdio_aob_for_buffer(struct qdio_output_q *q, + int bufnr) +{ + unsigned long phys_aob = 0; + + if (!q->use_cq) + goto out; + + if (!q->aobs[bufnr]) { + struct qaob *aob = qdio_allocate_aob(); + q->aobs[bufnr] = aob; + } + if (q->aobs[bufnr]) { + BUG_ON(q->sbal_state == NULL); + q->sbal_state[bufnr].flags = QDIO_OUTBUF_STATE_FLAG_NONE; + q->sbal_state[bufnr].aob = q->aobs[bufnr]; + q->aobs[bufnr]->user1 = (u64) q->sbal_state[bufnr].user; + phys_aob = virt_to_phys(q->aobs[bufnr]); + BUG_ON(phys_aob & 0xFF); + } + +out: + return phys_aob; +} + static void qdio_kick_handler(struct qdio_q *q) { int start = q->first_to_kick; @@ -610,6 +729,8 @@ static void qdio_kick_handler(struct qdio_q *q) start, count); } + qdio_handle_aobs(q, start, count); + q->handler(q->irq_ptr->cdev, q->qdio_error, q->nr, start, count, q->irq_ptr->int_parm); @@ -672,23 +793,26 @@ static int get_outbound_buffer_frontier(struct qdio_q *q) */ count = min(atomic_read(&q->nr_buf_used), QDIO_MAX_BUFFERS_MASK); stop = add_buf(q->first_to_check, count); - if (q->first_to_check == stop) - return q->first_to_check; + goto out; - count = get_buf_states(q, q->first_to_check, &state, count, 0); + count = get_buf_states(q, q->first_to_check, &state, count, 0, 1); if (!count) - return q->first_to_check; + goto out; switch (state) { + case SLSB_P_OUTPUT_PENDING: + BUG(); case SLSB_P_OUTPUT_EMPTY: /* the adapter got it */ - DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "out empty:%1d %02x", q->nr, count); + DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, + "out empty:%1d %02x", q->nr, count); atomic_sub(count, &q->nr_buf_used); q->first_to_check = add_buf(q->first_to_check, count); if (q->irq_ptr->perf_stat_enabled) account_sbals(q, count); + break; case SLSB_P_OUTPUT_ERROR: process_buffer_error(q, count); @@ -701,7 +825,8 @@ static int get_outbound_buffer_frontier(struct qdio_q *q) /* the adapter has not fetched the output yet */ if (q->irq_ptr->perf_stat_enabled) q->q_stats.nr_sbal_nop++; - DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "out primed:%1d", q->nr); + DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "out primed:%1d", + q->nr); break; case SLSB_P_OUTPUT_NOT_INIT: case SLSB_P_OUTPUT_HALTED: @@ -709,6 +834,8 @@ static int get_outbound_buffer_frontier(struct qdio_q *q) default: BUG(); } + +out: return q->first_to_check; } @@ -732,7 +859,7 @@ static inline int qdio_outbound_q_moved(struct qdio_q *q) return 0; } -static int qdio_kick_outbound_q(struct qdio_q *q) +static int qdio_kick_outbound_q(struct qdio_q *q, unsigned long aob) { int retries = 0, cc; unsigned int busy_bit; @@ -744,7 +871,7 @@ static int qdio_kick_outbound_q(struct qdio_q *q) retry: qperf_inc(q, siga_write); - cc = qdio_siga_output(q, &busy_bit); + cc = qdio_siga_output(q, &busy_bit, aob); switch (cc) { case 0: break; @@ -921,8 +1048,9 @@ static void qdio_int_handler_pci(struct qdio_irq *irq_ptr) } q->u.in.queue_start_poll(q->irq_ptr->cdev, q->nr, q->irq_ptr->int_parm); - } else + } else { tasklet_schedule(&q->tasklet); + } } if (!pci_out_supported(q)) @@ -1236,6 +1364,26 @@ out_err: } EXPORT_SYMBOL_GPL(qdio_allocate); +static void qdio_detect_hsicq(struct qdio_irq *irq_ptr) +{ + struct qdio_q *q = irq_ptr->input_qs[0]; + int i, use_cq = 0; + + if (irq_ptr->nr_input_qs > 1 && queue_type(q) == QDIO_IQDIO_QFMT) + use_cq = 1; + + for_each_output_queue(irq_ptr, q, i) { + if (use_cq) { + if (qdio_enable_async_operation(&q->u.out) < 0) { + use_cq = 0; + continue; + } + } else + qdio_disable_async_operation(&q->u.out); + } + DBF_EVENT("use_cq:%d", use_cq); +} + /** * qdio_establish - establish queues on a qdio subchannel * @init_data: initialization data @@ -1301,6 +1449,8 @@ int qdio_establish(struct qdio_initialize *init_data) qdio_setup_ssqd_info(irq_ptr); DBF_EVENT("qib ac:%4x", irq_ptr->qib.ac); + qdio_detect_hsicq(irq_ptr); + /* qebsm is now setup if available, initialize buffer states */ qdio_init_buf_states(irq_ptr); @@ -1480,17 +1630,21 @@ static int handle_outbound(struct qdio_q *q, unsigned int callflags, q->u.out.pci_out_enabled = 0; if (queue_type(q) == QDIO_IQDIO_QFMT) { - /* One SIGA-W per buffer required for unicast HiperSockets. */ + unsigned long phys_aob = 0; + + /* One SIGA-W per buffer required for unicast HSI */ WARN_ON_ONCE(count > 1 && !multicast_outbound(q)); - rc = qdio_kick_outbound_q(q); + phys_aob = qdio_aob_for_buffer(&q->u.out, bufnr); + + rc = qdio_kick_outbound_q(q, phys_aob); } else if (need_siga_sync(q)) { rc = qdio_siga_sync_q(q); } else { /* try to fast requeue buffers */ get_buf_state(q, prev_buf(bufnr), &state, 0); if (state != SLSB_CU_OUTPUT_PRIMED) - rc = qdio_kick_outbound_q(q); + rc = qdio_kick_outbound_q(q, 0); else qperf_inc(q, fast_requeue); } @@ -1518,6 +1672,7 @@ int do_QDIO(struct ccw_device *cdev, unsigned int callflags, { struct qdio_irq *irq_ptr; + if (bufnr >= QDIO_MAX_BUFFERS_PER_Q || count > QDIO_MAX_BUFFERS_PER_Q) return -EINVAL; @@ -1562,7 +1717,7 @@ int qdio_start_irq(struct ccw_device *cdev, int nr) WARN_ON(queue_irqs_enabled(q)); - if (!shared_ind(q->irq_ptr->dsci)) + if (!shared_ind(q)) xchg(q->irq_ptr->dsci, 0); qdio_stop_polling(q); @@ -1572,7 +1727,7 @@ int qdio_start_irq(struct ccw_device *cdev, int nr) * We need to check again to not lose initiative after * resetting the ACK state. */ - if (!shared_ind(q->irq_ptr->dsci) && *q->irq_ptr->dsci) + if (!shared_ind(q) && *q->irq_ptr->dsci) goto rescan; if (!qdio_inbound_q_done(q)) goto rescan; diff --git a/drivers/s390/cio/qdio_setup.c b/drivers/s390/cio/qdio_setup.c index 89107d0938c4..dd8bd670a6b8 100644 --- a/drivers/s390/cio/qdio_setup.c +++ b/drivers/s390/cio/qdio_setup.c @@ -19,6 +19,22 @@ #include "qdio_debug.h" static struct kmem_cache *qdio_q_cache; +static struct kmem_cache *qdio_aob_cache; + +struct qaob *qdio_allocate_aob() +{ + struct qaob *aob; + + aob = kmem_cache_zalloc(qdio_aob_cache, GFP_ATOMIC); + return aob; +} +EXPORT_SYMBOL_GPL(qdio_allocate_aob); + +void qdio_release_aob(struct qaob *aob) +{ + kmem_cache_free(qdio_aob_cache, aob); +} +EXPORT_SYMBOL_GPL(qdio_release_aob); /* * qebsm is only available under 64bit but the adapter sets the feature @@ -154,29 +170,36 @@ static void setup_queues(struct qdio_irq *irq_ptr, struct qdio_q *q; void **input_sbal_array = qdio_init->input_sbal_addr_array; void **output_sbal_array = qdio_init->output_sbal_addr_array; + struct qdio_outbuf_state *output_sbal_state_array = + qdio_init->output_sbal_state_array; int i; for_each_input_queue(irq_ptr, q, i) { - DBF_EVENT("in-q:%1d", i); + DBF_EVENT("inq:%1d", i); setup_queues_misc(q, irq_ptr, qdio_init->input_handler, i); q->is_input_q = 1; - q->u.in.queue_start_poll = qdio_init->queue_start_poll; + q->u.in.queue_start_poll = qdio_init->queue_start_poll[i]; + setup_storage_lists(q, irq_ptr, input_sbal_array, i); input_sbal_array += QDIO_MAX_BUFFERS_PER_Q; - if (is_thinint_irq(irq_ptr)) + if (is_thinint_irq(irq_ptr)) { tasklet_init(&q->tasklet, tiqdio_inbound_processing, (unsigned long) q); - else + } else { tasklet_init(&q->tasklet, qdio_inbound_processing, (unsigned long) q); + } } for_each_output_queue(irq_ptr, q, i) { DBF_EVENT("outq:%1d", i); setup_queues_misc(q, irq_ptr, qdio_init->output_handler, i); + q->u.out.sbal_state = output_sbal_state_array; + output_sbal_state_array += QDIO_MAX_BUFFERS_PER_Q; + q->is_input_q = 0; q->u.out.scan_threshold = qdio_init->scan_threshold; setup_storage_lists(q, irq_ptr, output_sbal_array, i); @@ -311,6 +334,19 @@ void qdio_release_memory(struct qdio_irq *irq_ptr) for (i = 0; i < QDIO_MAX_QUEUES_PER_IRQ; i++) { q = irq_ptr->output_qs[i]; if (q) { + if (q->u.out.use_cq) { + int n; + + for (n = 0; n < QDIO_MAX_BUFFERS_PER_Q; ++n) { + struct qaob *aob = q->u.out.aobs[n]; + if (aob) { + qdio_release_aob(aob); + q->u.out.aobs[n] = NULL; + } + } + + qdio_disable_async_operation(&q->u.out); + } free_page((unsigned long) q->slib); kmem_cache_free(qdio_q_cache, q); } @@ -465,23 +501,60 @@ void qdio_print_subchannel_info(struct qdio_irq *irq_ptr, printk(KERN_INFO "%s", s); } +int qdio_enable_async_operation(struct qdio_output_q *outq) +{ + outq->aobs = kzalloc(sizeof(struct qaob *) * QDIO_MAX_BUFFERS_PER_Q, + GFP_ATOMIC); + if (!outq->aobs) { + outq->use_cq = 0; + return -ENOMEM; + } + outq->use_cq = 1; + return 0; +} + +void qdio_disable_async_operation(struct qdio_output_q *q) +{ + kfree(q->aobs); + q->aobs = NULL; + q->use_cq = 0; +} + int __init qdio_setup_init(void) { + int rc; + qdio_q_cache = kmem_cache_create("qdio_q", sizeof(struct qdio_q), 256, 0, NULL); if (!qdio_q_cache) return -ENOMEM; + qdio_aob_cache = kmem_cache_create("qdio_aob", + sizeof(struct qaob), + sizeof(struct qaob), + 0, + NULL); + if (!qdio_aob_cache) { + rc = -ENOMEM; + goto free_qdio_q_cache; + } + /* Check for OSA/FCP thin interrupts (bit 67). */ DBF_EVENT("thinint:%1d", (css_general_characteristics.aif_osa) ? 1 : 0); /* Check for QEBSM support in general (bit 58). */ DBF_EVENT("cssQEBSM:%1d", (qebsm_possible()) ? 1 : 0); - return 0; + rc = 0; +out: + return rc; +free_qdio_q_cache: + kmem_cache_destroy(qdio_q_cache); + goto out; } void qdio_setup_exit(void) { + kmem_cache_destroy(qdio_aob_cache); kmem_cache_destroy(qdio_q_cache); } diff --git a/drivers/s390/cio/qdio_thinint.c b/drivers/s390/cio/qdio_thinint.c index 2a1d4dfaf859..a3e3949d7b69 100644 --- a/drivers/s390/cio/qdio_thinint.c +++ b/drivers/s390/cio/qdio_thinint.c @@ -67,12 +67,9 @@ static void put_indicator(u32 *addr) void tiqdio_add_input_queues(struct qdio_irq *irq_ptr) { - struct qdio_q *q; - int i; - mutex_lock(&tiq_list_lock); - for_each_input_queue(irq_ptr, q, i) - list_add_rcu(&q->entry, &tiq_list); + BUG_ON(irq_ptr->nr_input_qs < 1); + list_add_rcu(&irq_ptr->input_qs[0]->entry, &tiq_list); mutex_unlock(&tiq_list_lock); xchg(irq_ptr->dsci, 1 << 7); } @@ -80,19 +77,17 @@ void tiqdio_add_input_queues(struct qdio_irq *irq_ptr) void tiqdio_remove_input_queues(struct qdio_irq *irq_ptr) { struct qdio_q *q; - int i; - for (i = 0; i < irq_ptr->nr_input_qs; i++) { - q = irq_ptr->input_qs[i]; - /* if establish triggered an error */ - if (!q || !q->entry.prev || !q->entry.next) - continue; + BUG_ON(irq_ptr->nr_input_qs < 1); + q = irq_ptr->input_qs[0]; + /* if establish triggered an error */ + if (!q || !q->entry.prev || !q->entry.next) + return; - mutex_lock(&tiq_list_lock); - list_del_rcu(&q->entry); - mutex_unlock(&tiq_list_lock); - synchronize_rcu(); - } + mutex_lock(&tiq_list_lock); + list_del_rcu(&q->entry); + mutex_unlock(&tiq_list_lock); + synchronize_rcu(); } static inline u32 clear_shared_ind(void) @@ -102,6 +97,40 @@ static inline u32 clear_shared_ind(void) return xchg(&q_indicators[TIQDIO_SHARED_IND].ind, 0); } +static inline void tiqdio_call_inq_handlers(struct qdio_irq *irq) +{ + struct qdio_q *q; + int i; + + for_each_input_queue(irq, q, i) { + if (!references_shared_dsci(irq) && + has_multiple_inq_on_dsci(irq)) + xchg(q->irq_ptr->dsci, 0); + + if (q->u.in.queue_start_poll) { + /* skip if polling is enabled or already in work */ + if (test_and_set_bit(QDIO_QUEUE_IRQS_DISABLED, + &q->u.in.queue_irq_state)) { + qperf_inc(q, int_discarded); + continue; + } + + /* avoid dsci clear here, done after processing */ + q->u.in.queue_start_poll(q->irq_ptr->cdev, q->nr, + q->irq_ptr->int_parm); + } else { + if (!shared_ind(q)) + xchg(q->irq_ptr->dsci, 0); + + /* + * Call inbound processing but not directly + * since that could starve other thinint queues. + */ + tasklet_schedule(&q->tasklet); + } + } +} + /** * tiqdio_thinint_handler - thin interrupt handler for qdio * @alsi: pointer to adapter local summary indicator @@ -120,35 +149,18 @@ static void tiqdio_thinint_handler(void *alsi, void *data) /* check for work on all inbound thinint queues */ list_for_each_entry_rcu(q, &tiq_list, entry) { + struct qdio_irq *irq; /* only process queues from changed sets */ - if (unlikely(shared_ind(q->irq_ptr->dsci))) { + irq = q->irq_ptr; + if (unlikely(references_shared_dsci(irq))) { if (!si_used) continue; - } else if (!*q->irq_ptr->dsci) + } else if (!*irq->dsci) continue; - if (q->u.in.queue_start_poll) { - /* skip if polling is enabled or already in work */ - if (test_and_set_bit(QDIO_QUEUE_IRQS_DISABLED, - &q->u.in.queue_irq_state)) { - qperf_inc(q, int_discarded); - continue; - } + tiqdio_call_inq_handlers(irq); - /* avoid dsci clear here, done after processing */ - q->u.in.queue_start_poll(q->irq_ptr->cdev, q->nr, - q->irq_ptr->int_parm); - } else { - /* only clear it if the indicator is non-shared */ - if (!shared_ind(q->irq_ptr->dsci)) - xchg(q->irq_ptr->dsci, 0); - /* - * Call inbound processing but not directly - * since that could starve other thinint queues. - */ - tasklet_schedule(&q->tasklet); - } qperf_inc(q, adapter_int); } rcu_read_unlock(); diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c index 2b0fb056a51f..8d804be9f043 100644 --- a/drivers/s390/net/qeth_core_main.c +++ b/drivers/s390/net/qeth_core_main.c @@ -3939,6 +3939,7 @@ static int qeth_qdio_establish(struct qeth_card *card) struct qdio_initialize init_data; char *qib_param_field; struct qdio_buffer **in_sbal_ptrs; + void (**queue_start_poll) (struct ccw_device *, int, unsigned long); struct qdio_buffer **out_sbal_ptrs; int i, j, k; int rc = 0; @@ -3947,8 +3948,10 @@ static int qeth_qdio_establish(struct qeth_card *card) qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char), GFP_KERNEL); - if (!qib_param_field) - return -ENOMEM; + if (!qib_param_field) { + rc = -ENOMEM; + goto out_free_nothing; + } qeth_create_qib_param_field(card, qib_param_field); qeth_create_qib_param_field_blkt(card, qib_param_field); @@ -3956,20 +3959,26 @@ static int qeth_qdio_establish(struct qeth_card *card) in_sbal_ptrs = kmalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(void *), GFP_KERNEL); if (!in_sbal_ptrs) { - kfree(qib_param_field); - return -ENOMEM; + rc = -ENOMEM; + goto out_free_qib_param; } for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) in_sbal_ptrs[i] = (struct qdio_buffer *) virt_to_phys(card->qdio.in_q->bufs[i].buffer); + queue_start_poll = kmalloc(sizeof(void *) * 1, GFP_KERNEL); + if (!queue_start_poll) { + rc = -ENOMEM; + goto out_free_in_sbals; + } + queue_start_poll[0] = card->discipline.start_poll; + out_sbal_ptrs = kmalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q * sizeof(void *), GFP_KERNEL); if (!out_sbal_ptrs) { - kfree(in_sbal_ptrs); - kfree(qib_param_field); - return -ENOMEM; + rc = -ENOMEM; + goto out_free_queue_start_poll; } for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i) for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) { @@ -3986,7 +3995,7 @@ static int qeth_qdio_establish(struct qeth_card *card) init_data.no_output_qs = card->qdio.no_out_queues; init_data.input_handler = card->discipline.input_handler; init_data.output_handler = card->discipline.output_handler; - init_data.queue_start_poll = card->discipline.start_poll; + init_data.queue_start_poll = queue_start_poll; init_data.int_parm = (unsigned long) card; init_data.input_sbal_addr_array = (void **) in_sbal_ptrs; init_data.output_sbal_addr_array = (void **) out_sbal_ptrs; @@ -4008,8 +4017,13 @@ static int qeth_qdio_establish(struct qeth_card *card) } out: kfree(out_sbal_ptrs); +out_free_queue_start_poll: + kfree(queue_start_poll); +out_free_in_sbals: kfree(in_sbal_ptrs); +out_free_qib_param: kfree(qib_param_field); +out_free_nothing: return rc; } |