Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759247AbYGAOIl (ORCPT ); Tue, 1 Jul 2008 10:08:41 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1758689AbYGAOHg (ORCPT ); Tue, 1 Jul 2008 10:07:36 -0400 Received: from mtagate5.de.ibm.com ([195.212.29.154]:31896 "EHLO mtagate5.de.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755700AbYGAOHW (ORCPT ); Tue, 1 Jul 2008 10:07:22 -0400 Message-Id: <20080701140624.830807533@de.ibm.com> References: <20080701140551.168274793@de.ibm.com> User-Agent: quilt/0.46-1 Date: Tue, 01 Jul 2008 16:05:54 +0200 From: Martin Schwidefsky To: linux-kernel@vger.kernel.org, linux-s390@vger.kernel.org Cc: jang@linux.vnet.ibm.com, Martin Schwidefsky Subject: [patch 3/5] qdio: new qdio driver, part 2. Content-Disposition: inline; filename=202-nqio-main2.diff Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 92973 Lines: 3155 From: Jan Glauber List of major changes: - split qdio driver into several files - seperation of thin interrupt code - improved handling for multiple thin interrupt devices - inbound and outbound processing now always runs in tasklet context - significant less tasklet schedules per interrupt needed - merged qebsm with non-qebsm handling - cleanup qdio interface and added kerneldoc - coding style Reviewed-by: Cornelia Huck Reviewed-by: Utz Bacher Reviewed-by: Ursula Braun Signed-off-by: Jan Glauber Signed-off-by: Martin Schwidefsky --- drivers/s390/cio/Makefile | 2 drivers/s390/cio/qdio.h | 830 +++++++++++++--------------------------- drivers/s390/cio/qdio_debug.c | 238 +++++++++++ drivers/s390/cio/qdio_debug.h | 93 ++++ drivers/s390/cio/qdio_perf.c | 151 +++++++ drivers/s390/cio/qdio_perf.h | 54 ++ drivers/s390/cio/qdio_setup.c | 516 ++++++++++++++++++++++++ drivers/s390/cio/qdio_thinint.c | 380 ++++++++++++++++++ include/asm-s390/qdio.h | 640 ++++++++++++++---------------- 9 files changed, 2029 insertions(+), 875 deletions(-) Index: quilt-2.6/drivers/s390/cio/Makefile =================================================================== --- quilt-2.6.orig/drivers/s390/cio/Makefile +++ quilt-2.6/drivers/s390/cio/Makefile @@ -9,4 +9,6 @@ ccw_device-objs += device_id.o device_pg obj-y += ccw_device.o cmf.o obj-$(CONFIG_CHSC_SCH) += chsc_sch.o obj-$(CONFIG_CCWGROUP) += ccwgroup.o + +qdio-objs := qdio_main.o qdio_thinint.o qdio_debug.o qdio_perf.o qdio_setup.o obj-$(CONFIG_QDIO) += qdio.o Index: quilt-2.6/drivers/s390/cio/qdio_debug.c =================================================================== --- /dev/null +++ quilt-2.6/drivers/s390/cio/qdio_debug.c @@ -0,0 +1,238 @@ +/* + * drivers/s390/cio/qdio_debug.c + * + * Copyright IBM Corp. 2008 + * + * Author: Jan Glauber (jang@linux.vnet.ibm.com) + */ +#include +#include +#include +#include +#include +#include "qdio_debug.h" +#include "qdio.h" + +debug_info_t *qdio_dbf_setup; +debug_info_t *qdio_dbf_trace; + +static struct dentry *debugfs_root; +#define MAX_DEBUGFS_QUEUES 32 +static struct dentry *debugfs_queues[MAX_DEBUGFS_QUEUES] = { NULL }; +static DEFINE_MUTEX(debugfs_mutex); + +void qdio_allocate_do_dbf(struct qdio_initialize *init_data) +{ + char dbf_text[20]; + + sprintf(dbf_text, "qfmt:%x", init_data->q_format); + QDIO_DBF_TEXT0(0, setup, dbf_text); + QDIO_DBF_HEX0(0, setup, init_data->adapter_name, 8); + sprintf(dbf_text, "qpff%4x", init_data->qib_param_field_format); + QDIO_DBF_TEXT0(0, setup, dbf_text); + QDIO_DBF_HEX0(0, setup, &init_data->qib_param_field, sizeof(void *)); + QDIO_DBF_HEX0(0, setup, &init_data->input_slib_elements, sizeof(void *)); + QDIO_DBF_HEX0(0, setup, &init_data->output_slib_elements, sizeof(void *)); + sprintf(dbf_text, "niq:%4x", init_data->no_input_qs); + QDIO_DBF_TEXT0(0, setup, dbf_text); + sprintf(dbf_text, "noq:%4x", init_data->no_output_qs); + QDIO_DBF_TEXT0(0, setup, dbf_text); + QDIO_DBF_HEX0(0, setup, &init_data->input_handler, sizeof(void *)); + QDIO_DBF_HEX0(0, setup, &init_data->output_handler, sizeof(void *)); + QDIO_DBF_HEX0(0, setup, &init_data->int_parm, sizeof(long)); + QDIO_DBF_HEX0(0, setup, &init_data->flags, sizeof(long)); + QDIO_DBF_HEX0(0, setup, &init_data->input_sbal_addr_array, sizeof(void *)); + QDIO_DBF_HEX0(0, setup, &init_data->output_sbal_addr_array, sizeof(void *)); +} + +static void qdio_unregister_dbf_views(void) +{ + if (qdio_dbf_setup) + debug_unregister(qdio_dbf_setup); + if (qdio_dbf_trace) + debug_unregister(qdio_dbf_trace); +} + +static int qdio_register_dbf_views(void) +{ + qdio_dbf_setup = debug_register("qdio_setup", QDIO_DBF_SETUP_PAGES, + QDIO_DBF_SETUP_NR_AREAS, + QDIO_DBF_SETUP_LEN); + if (!qdio_dbf_setup) + goto oom; + debug_register_view(qdio_dbf_setup, &debug_hex_ascii_view); + debug_set_level(qdio_dbf_setup, QDIO_DBF_SETUP_LEVEL); + + qdio_dbf_trace = debug_register("qdio_trace", QDIO_DBF_TRACE_PAGES, + QDIO_DBF_TRACE_NR_AREAS, + QDIO_DBF_TRACE_LEN); + if (!qdio_dbf_trace) + goto oom; + debug_register_view(qdio_dbf_trace, &debug_hex_ascii_view); + debug_set_level(qdio_dbf_trace, QDIO_DBF_TRACE_LEVEL); + return 0; +oom: + qdio_unregister_dbf_views(); + return -ENOMEM; +} + +static int qstat_show(struct seq_file *m, void *v) +{ + unsigned char state; + struct qdio_q *q = (struct qdio_q *)m->private; + int i; + + if (!q) + return 0; + + seq_printf(m, "device state indicator: %d\n", *q->irq_ptr->dsci); + seq_printf(m, "nr_used: %d\n", atomic_read(&q->nr_buf_used)); + seq_printf(m, "ftc: %d\n", q->first_to_check); + seq_printf(m, "last_move_ftc: %d\n", q->last_move_ftc); + seq_printf(m, "polling: %d\n", atomic_read(&q->u.in.polling)); + seq_printf(m, "slsb buffer states:\n"); + + qdio_siga_sync_q(q); + for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; i++) { + get_buf_state(q, i, &state); + switch (state) { + case SLSB_P_INPUT_NOT_INIT: + case SLSB_P_OUTPUT_NOT_INIT: + seq_printf(m, "N"); + break; + case SLSB_P_INPUT_PRIMED: + case SLSB_CU_OUTPUT_PRIMED: + seq_printf(m, "+"); + break; + case SLSB_P_INPUT_ACK: + seq_printf(m, "A"); + break; + case SLSB_P_INPUT_ERROR: + case SLSB_P_OUTPUT_ERROR: + seq_printf(m, "x"); + break; + case SLSB_CU_INPUT_EMPTY: + case SLSB_P_OUTPUT_EMPTY: + seq_printf(m, "-"); + break; + case SLSB_P_INPUT_HALTED: + case SLSB_P_OUTPUT_HALTED: + seq_printf(m, "."); + break; + default: + seq_printf(m, "?"); + } + if (i == 63) + seq_printf(m, "\n"); + } + seq_printf(m, "\n"); + return 0; +} + +static ssize_t qstat_seq_write(struct file *file, const char __user *buf, + size_t count, loff_t *off) +{ + struct seq_file *seq = file->private_data; + struct qdio_q *q = (struct qdio_q *)seq->private; + + if (!q) + return 0; + + if (q->is_input_q) + xchg(q->irq_ptr->dsci, 1); + tasklet_schedule(&q->tasklet); + return count; +} + +static int qstat_seq_open(struct inode *inode, struct file *filp) +{ + return single_open(filp, qstat_show, + filp->f_path.dentry->d_inode->i_private); +} + +static void get_queue_name(struct qdio_q *q, struct ccw_device *cdev, char *name) +{ + memset(name, 0, sizeof(name)); + sprintf(name, "%s", cdev->dev.bus_id); + if (q->is_input_q) + sprintf(name + strlen(name), "_input"); + else + sprintf(name + strlen(name), "_output"); + sprintf(name + strlen(name), "_%d", q->nr); +} + +static void remove_debugfs_entry(struct qdio_q *q) +{ + int i; + + for (i = 0; i < MAX_DEBUGFS_QUEUES; i++) { + if (!debugfs_queues[i]) + continue; + if (debugfs_queues[i]->d_inode->i_private == q) { + debugfs_remove(debugfs_queues[i]); + debugfs_queues[i] = NULL; + } + } +} + +static struct file_operations debugfs_fops = { + .owner = THIS_MODULE, + .open = qstat_seq_open, + .read = seq_read, + .write = qstat_seq_write, + .llseek = seq_lseek, + .release = single_release, +}; + +static void setup_debugfs_entry(struct qdio_q *q, struct ccw_device *cdev) +{ + int i = 0; + char name[40]; + + while (debugfs_queues[i] != NULL) { + i++; + if (i >= MAX_DEBUGFS_QUEUES) + return; + } + get_queue_name(q, cdev, name); + debugfs_queues[i] = debugfs_create_file(name, S_IFREG | S_IRUGO | S_IWUSR, + debugfs_root, q, &debugfs_fops); +} + +void qdio_setup_debug_entries(struct qdio_irq *irq_ptr, struct ccw_device *cdev) +{ + struct qdio_q *q; + int i; + + mutex_lock(&debugfs_mutex); + for_each_input_queue(irq_ptr, q, i) + setup_debugfs_entry(q, cdev); + for_each_output_queue(irq_ptr, q, i) + setup_debugfs_entry(q, cdev); + mutex_unlock(&debugfs_mutex); +} + +void qdio_shutdown_debug_entries(struct qdio_irq *irq_ptr, struct ccw_device *cdev) +{ + struct qdio_q *q; + int i; + + mutex_lock(&debugfs_mutex); + for_each_input_queue(irq_ptr, q, i) + remove_debugfs_entry(q); + for_each_output_queue(irq_ptr, q, i) + remove_debugfs_entry(q); + mutex_unlock(&debugfs_mutex); +} + +int __init qdio_debug_init(void) +{ + debugfs_root = debugfs_create_dir("qdio_queues", NULL); + return qdio_register_dbf_views(); +} + +void qdio_debug_exit(void) +{ + debugfs_remove(debugfs_root); + qdio_unregister_dbf_views(); +} Index: quilt-2.6/drivers/s390/cio/qdio_debug.h =================================================================== --- /dev/null +++ quilt-2.6/drivers/s390/cio/qdio_debug.h @@ -0,0 +1,93 @@ +/* + * drivers/s390/cio/qdio_debug.h + * + * Copyright IBM Corp. 2008 + * + * Author: Jan Glauber (jang@linux.vnet.ibm.com) + */ +#ifndef QDIO_DEBUG_H +#define QDIO_DEBUG_H + +#include +#include +#include "qdio.h" + +#define QDIO_DBF_HEX(ex, name, level, addr, len) \ + do { \ + if (ex) \ + debug_exception(qdio_dbf_##name, level, (void *)(addr), len); \ + else \ + debug_event(qdio_dbf_##name, level, (void *)(addr), len); \ + } while (0) +#define QDIO_DBF_TEXT(ex, name, level, text) \ + do { \ + if (ex) \ + debug_text_exception(qdio_dbf_##name, level, text); \ + else \ + debug_text_event(qdio_dbf_##name, level, text); \ + } while (0) + +#define QDIO_DBF_HEX0(ex, name, addr, len) QDIO_DBF_HEX(ex, name, 0, addr, len) +#define QDIO_DBF_HEX1(ex, name, addr, len) QDIO_DBF_HEX(ex, name, 1, addr, len) +#define QDIO_DBF_HEX2(ex, name, addr, len) QDIO_DBF_HEX(ex, name, 2, addr, len) + +#ifdef CONFIG_QDIO_DEBUG +#define QDIO_DBF_HEX3(ex, name, addr, len) QDIO_DBF_HEX(ex, name, 3, addr, len) +#define QDIO_DBF_HEX4(ex, name, addr, len) QDIO_DBF_HEX(ex, name, 4, addr, len) +#define QDIO_DBF_HEX5(ex, name, addr, len) QDIO_DBF_HEX(ex, name, 5, addr, len) +#define QDIO_DBF_HEX6(ex, name, addr, len) QDIO_DBF_HEX(ex, name, 6, addr, len) +#else +#define QDIO_DBF_HEX3(ex, name, addr, len) do {} while (0) +#define QDIO_DBF_HEX4(ex, name, addr, len) do {} while (0) +#define QDIO_DBF_HEX5(ex, name, addr, len) do {} while (0) +#define QDIO_DBF_HEX6(ex, name, addr, len) do {} while (0) +#endif /* CONFIG_QDIO_DEBUG */ + +#define QDIO_DBF_TEXT0(ex, name, text) QDIO_DBF_TEXT(ex, name, 0, text) +#define QDIO_DBF_TEXT1(ex, name, text) QDIO_DBF_TEXT(ex, name, 1, text) +#define QDIO_DBF_TEXT2(ex, name, text) QDIO_DBF_TEXT(ex, name, 2, text) + +#ifdef CONFIG_QDIO_DEBUG +#define QDIO_DBF_TEXT3(ex, name, text) QDIO_DBF_TEXT(ex, name, 3, text) +#define QDIO_DBF_TEXT4(ex, name, text) QDIO_DBF_TEXT(ex, name, 4, text) +#define QDIO_DBF_TEXT5(ex, name, text) QDIO_DBF_TEXT(ex, name, 5, text) +#define QDIO_DBF_TEXT6(ex, name, text) QDIO_DBF_TEXT(ex, name, 6, text) +#else +#define QDIO_DBF_TEXT3(ex, name, text) do {} while (0) +#define QDIO_DBF_TEXT4(ex, name, text) do {} while (0) +#define QDIO_DBF_TEXT5(ex, name, text) do {} while (0) +#define QDIO_DBF_TEXT6(ex, name, text) do {} while (0) +#endif /* CONFIG_QDIO_DEBUG */ + +/* s390dbf views */ +#define QDIO_DBF_SETUP_LEN 8 +#define QDIO_DBF_SETUP_PAGES 4 +#define QDIO_DBF_SETUP_NR_AREAS 1 + +#define QDIO_DBF_TRACE_LEN 8 +#define QDIO_DBF_TRACE_NR_AREAS 2 + +#ifdef CONFIG_QDIO_DEBUG +#define QDIO_DBF_TRACE_PAGES 16 +#define QDIO_DBF_SETUP_LEVEL 6 +#define QDIO_DBF_SBAL_LEVEL 6 +#define QDIO_DBF_TRACE_LEVEL 4 +#else /* !CONFIG_QDIO_DEBUG */ +#define QDIO_DBF_TRACE_PAGES 4 +#define QDIO_DBF_SETUP_LEVEL 2 +#define QDIO_DBF_SBAL_LEVEL 2 +#define QDIO_DBF_TRACE_LEVEL 2 +#endif /* CONFIG_QDIO_DEBUG */ + +extern debug_info_t *qdio_dbf_setup; +extern debug_info_t *qdio_dbf_trace; + +void qdio_allocate_do_dbf(struct qdio_initialize *init_data); +void debug_print_bstat(struct qdio_q *q); +void qdio_setup_debug_entries(struct qdio_irq *irq_ptr, + struct ccw_device *cdev); +void qdio_shutdown_debug_entries(struct qdio_irq *irq_ptr, + struct ccw_device *cdev); +int qdio_debug_init(void); +void qdio_debug_exit(void); +#endif Index: quilt-2.6/drivers/s390/cio/qdio.h =================================================================== --- quilt-2.6.orig/drivers/s390/cio/qdio.h +++ quilt-2.6/drivers/s390/cio/qdio.h @@ -1,66 +1,20 @@ +/* + * linux/drivers/s390/cio/qdio.h + * + * Copyright 2000,2008 IBM Corp. + * Author(s): Utz Bacher + * Jan Glauber + */ #ifndef _CIO_QDIO_H #define _CIO_QDIO_H #include -#include #include +#include "chsc.h" -#ifdef CONFIG_QDIO_DEBUG -#define QDIO_VERBOSE_LEVEL 9 -#else /* CONFIG_QDIO_DEBUG */ -#define QDIO_VERBOSE_LEVEL 5 -#endif /* CONFIG_QDIO_DEBUG */ -#define QDIO_USE_PROCESSING_STATE - -#define QDIO_MINIMAL_BH_RELIEF_TIME 16 -#define QDIO_TIMER_POLL_VALUE 1 -#define IQDIO_TIMER_POLL_VALUE 1 - -/* - * unfortunately this can't be (QDIO_MAX_BUFFERS_PER_Q*4/3) or so -- as - * we never know, whether we'll get initiative again, e.g. to give the - * transmit skb's back to the stack, however the stack may be waiting for - * them... therefore we define 4 as threshold to start polling (which - * will stop as soon as the asynchronous queue catches up) - * btw, this only applies to the asynchronous HiperSockets queue - */ -#define IQDIO_FILL_LEVEL_TO_POLL 4 - -#define TIQDIO_THININT_ISC QDIO_AIRQ_ISC -#define TIQDIO_DELAY_TARGET 0 -#define QDIO_BUSY_BIT_PATIENCE 100 /* in microsecs */ -#define QDIO_BUSY_BIT_GIVE_UP 10000000 /* 10 seconds */ -#define IQDIO_GLOBAL_LAPS 2 /* GLOBAL_LAPS are not used as we */ -#define IQDIO_GLOBAL_LAPS_INT 1 /* don't global summary */ -#define IQDIO_LOCAL_LAPS 4 -#define IQDIO_LOCAL_LAPS_INT 1 -#define IQDIO_GLOBAL_SUMMARY_CC_MASK 2 -/*#define IQDIO_IQDC_INT_PARM 0x1234*/ - -#define QDIO_Q_LAPS 5 - -#define QDIO_STORAGE_KEY PAGE_DEFAULT_KEY - -#define L2_CACHELINE_SIZE 256 -#define INDICATORS_PER_CACHELINE (L2_CACHELINE_SIZE/sizeof(__u32)) - -#define QDIO_PERF "qdio_perf" - -/* must be a power of 2 */ -/*#define QDIO_STATS_NUMBER 4 - -#define QDIO_STATS_CLASSES 2 -#define QDIO_STATS_COUNT_NEEDED 2*/ - -#define QDIO_NO_USE_COUNT_TIMEOUT (1*HZ) /* wait for 1 sec on each q before - exiting without having use_count - of the queue to 0 */ - -#define QDIO_ESTABLISH_TIMEOUT (1*HZ) -#define QDIO_CLEANUP_CLEAR_TIMEOUT (20*HZ) -#define QDIO_CLEANUP_HALT_TIMEOUT (10*HZ) -#define QDIO_FORCE_CHECK_TIMEOUT (10*HZ) -#define QDIO_ACTIVATE_TIMEOUT (5) /* 5 ms */ +#define QDIO_BUSY_BIT_PATIENCE 100 /* 100 microseconds */ +#define QDIO_BUSY_BIT_GIVE_UP 2000000 /* 2 seconds = eternity */ +#define QDIO_INPUT_THRESHOLD 500 /* 500 microseconds */ enum qdio_irq_states { QDIO_IRQ_STATE_INACTIVE, @@ -72,224 +26,85 @@ enum qdio_irq_states { NR_QDIO_IRQ_STATES, }; -/* used as intparm in do_IO: */ -#define QDIO_DOING_SENSEID 0 -#define QDIO_DOING_ESTABLISH 1 -#define QDIO_DOING_ACTIVATE 2 -#define QDIO_DOING_CLEANUP 3 - -/************************* DEBUG FACILITY STUFF *********************/ - -#define QDIO_DBF_HEX(ex,name,level,addr,len) \ - do { \ - if (ex) \ - debug_exception(qdio_dbf_##name,level,(void*)(addr),len); \ - else \ - debug_event(qdio_dbf_##name,level,(void*)(addr),len); \ - } while (0) -#define QDIO_DBF_TEXT(ex,name,level,text) \ - do { \ - if (ex) \ - debug_text_exception(qdio_dbf_##name,level,text); \ - else \ - debug_text_event(qdio_dbf_##name,level,text); \ - } while (0) - - -#define QDIO_DBF_HEX0(ex,name,addr,len) QDIO_DBF_HEX(ex,name,0,addr,len) -#define QDIO_DBF_HEX1(ex,name,addr,len) QDIO_DBF_HEX(ex,name,1,addr,len) -#define QDIO_DBF_HEX2(ex,name,addr,len) QDIO_DBF_HEX(ex,name,2,addr,len) -#ifdef CONFIG_QDIO_DEBUG -#define QDIO_DBF_HEX3(ex,name,addr,len) QDIO_DBF_HEX(ex,name,3,addr,len) -#define QDIO_DBF_HEX4(ex,name,addr,len) QDIO_DBF_HEX(ex,name,4,addr,len) -#define QDIO_DBF_HEX5(ex,name,addr,len) QDIO_DBF_HEX(ex,name,5,addr,len) -#define QDIO_DBF_HEX6(ex,name,addr,len) QDIO_DBF_HEX(ex,name,6,addr,len) -#else /* CONFIG_QDIO_DEBUG */ -#define QDIO_DBF_HEX3(ex,name,addr,len) do {} while (0) -#define QDIO_DBF_HEX4(ex,name,addr,len) do {} while (0) -#define QDIO_DBF_HEX5(ex,name,addr,len) do {} while (0) -#define QDIO_DBF_HEX6(ex,name,addr,len) do {} while (0) -#endif /* CONFIG_QDIO_DEBUG */ - -#define QDIO_DBF_TEXT0(ex,name,text) QDIO_DBF_TEXT(ex,name,0,text) -#define QDIO_DBF_TEXT1(ex,name,text) QDIO_DBF_TEXT(ex,name,1,text) -#define QDIO_DBF_TEXT2(ex,name,text) QDIO_DBF_TEXT(ex,name,2,text) -#ifdef CONFIG_QDIO_DEBUG -#define QDIO_DBF_TEXT3(ex,name,text) QDIO_DBF_TEXT(ex,name,3,text) -#define QDIO_DBF_TEXT4(ex,name,text) QDIO_DBF_TEXT(ex,name,4,text) -#define QDIO_DBF_TEXT5(ex,name,text) QDIO_DBF_TEXT(ex,name,5,text) -#define QDIO_DBF_TEXT6(ex,name,text) QDIO_DBF_TEXT(ex,name,6,text) -#else /* CONFIG_QDIO_DEBUG */ -#define QDIO_DBF_TEXT3(ex,name,text) do {} while (0) -#define QDIO_DBF_TEXT4(ex,name,text) do {} while (0) -#define QDIO_DBF_TEXT5(ex,name,text) do {} while (0) -#define QDIO_DBF_TEXT6(ex,name,text) do {} while (0) -#endif /* CONFIG_QDIO_DEBUG */ - -#define QDIO_DBF_SETUP_NAME "qdio_setup" -#define QDIO_DBF_SETUP_LEN 8 -#define QDIO_DBF_SETUP_PAGES 4 -#define QDIO_DBF_SETUP_NR_AREAS 1 -#ifdef CONFIG_QDIO_DEBUG -#define QDIO_DBF_SETUP_LEVEL 6 -#else /* CONFIG_QDIO_DEBUG */ -#define QDIO_DBF_SETUP_LEVEL 2 -#endif /* CONFIG_QDIO_DEBUG */ - -#define QDIO_DBF_SBAL_NAME "qdio_labs" /* sbal */ -#define QDIO_DBF_SBAL_LEN 256 -#define QDIO_DBF_SBAL_PAGES 4 -#define QDIO_DBF_SBAL_NR_AREAS 2 -#ifdef CONFIG_QDIO_DEBUG -#define QDIO_DBF_SBAL_LEVEL 6 -#else /* CONFIG_QDIO_DEBUG */ -#define QDIO_DBF_SBAL_LEVEL 2 -#endif /* CONFIG_QDIO_DEBUG */ - -#define QDIO_DBF_TRACE_NAME "qdio_trace" -#define QDIO_DBF_TRACE_LEN 8 -#define QDIO_DBF_TRACE_NR_AREAS 2 -#ifdef CONFIG_QDIO_DEBUG -#define QDIO_DBF_TRACE_PAGES 16 -#define QDIO_DBF_TRACE_LEVEL 4 /* -------- could be even more verbose here */ -#else /* CONFIG_QDIO_DEBUG */ -#define QDIO_DBF_TRACE_PAGES 4 -#define QDIO_DBF_TRACE_LEVEL 2 -#endif /* CONFIG_QDIO_DEBUG */ - -#define QDIO_DBF_SENSE_NAME "qdio_sense" -#define QDIO_DBF_SENSE_LEN 64 -#define QDIO_DBF_SENSE_PAGES 2 -#define QDIO_DBF_SENSE_NR_AREAS 1 -#ifdef CONFIG_QDIO_DEBUG -#define QDIO_DBF_SENSE_LEVEL 6 -#else /* CONFIG_QDIO_DEBUG */ -#define QDIO_DBF_SENSE_LEVEL 2 -#endif /* CONFIG_QDIO_DEBUG */ - -#ifdef CONFIG_QDIO_DEBUG -#define QDIO_TRACE_QTYPE QDIO_ZFCP_QFMT - -#define QDIO_DBF_SLSB_OUT_NAME "qdio_slsb_out" -#define QDIO_DBF_SLSB_OUT_LEN QDIO_MAX_BUFFERS_PER_Q -#define QDIO_DBF_SLSB_OUT_PAGES 256 -#define QDIO_DBF_SLSB_OUT_NR_AREAS 1 -#define QDIO_DBF_SLSB_OUT_LEVEL 6 - -#define QDIO_DBF_SLSB_IN_NAME "qdio_slsb_in" -#define QDIO_DBF_SLSB_IN_LEN QDIO_MAX_BUFFERS_PER_Q -#define QDIO_DBF_SLSB_IN_PAGES 256 -#define QDIO_DBF_SLSB_IN_NR_AREAS 1 -#define QDIO_DBF_SLSB_IN_LEVEL 6 -#endif /* CONFIG_QDIO_DEBUG */ - -#define QDIO_PRINTK_HEADER QDIO_NAME ": " - -#if QDIO_VERBOSE_LEVEL>8 -#define QDIO_PRINT_STUPID(x...) printk( KERN_DEBUG QDIO_PRINTK_HEADER x) -#else -#define QDIO_PRINT_STUPID(x...) do { } while (0) -#endif - -#if QDIO_VERBOSE_LEVEL>7 -#define QDIO_PRINT_ALL(x...) printk( QDIO_PRINTK_HEADER x) -#else -#define QDIO_PRINT_ALL(x...) do { } while (0) -#endif - -#if QDIO_VERBOSE_LEVEL>6 -#define QDIO_PRINT_INFO(x...) printk( QDIO_PRINTK_HEADER x) -#else -#define QDIO_PRINT_INFO(x...) do { } while (0) -#endif - -#if QDIO_VERBOSE_LEVEL>5 -#define QDIO_PRINT_WARN(x...) printk( QDIO_PRINTK_HEADER x) -#else -#define QDIO_PRINT_WARN(x...) do { } while (0) -#endif - -#if QDIO_VERBOSE_LEVEL>4 -#define QDIO_PRINT_ERR(x...) printk( QDIO_PRINTK_HEADER x) -#else -#define QDIO_PRINT_ERR(x...) do { } while (0) -#endif - -#if QDIO_VERBOSE_LEVEL>3 -#define QDIO_PRINT_CRIT(x...) printk( QDIO_PRINTK_HEADER x) -#else -#define QDIO_PRINT_CRIT(x...) do { } while (0) -#endif - -#if QDIO_VERBOSE_LEVEL>2 -#define QDIO_PRINT_ALERT(x...) printk( QDIO_PRINTK_HEADER x) -#else -#define QDIO_PRINT_ALERT(x...) do { } while (0) -#endif - -#if QDIO_VERBOSE_LEVEL>1 -#define QDIO_PRINT_EMERG(x...) printk( QDIO_PRINTK_HEADER x) -#else -#define QDIO_PRINT_EMERG(x...) do { } while (0) -#endif +/* used as intparm in do_IO */ +#define QDIO_DOING_ESTABLISH 1 +#define QDIO_DOING_ACTIVATE 2 +#define QDIO_DOING_CLEANUP 3 + +#define SLSB_STATE_NOT_INIT 0x0 +#define SLSB_STATE_EMPTY 0x1 +#define SLSB_STATE_PRIMED 0x2 +#define SLSB_STATE_HALTED 0xe +#define SLSB_STATE_ERROR 0xf +#define SLSB_TYPE_INPUT 0x0 +#define SLSB_TYPE_OUTPUT 0x20 +#define SLSB_OWNER_PROG 0x80 +#define SLSB_OWNER_CU 0x40 + +#define SLSB_P_INPUT_NOT_INIT \ + (SLSB_OWNER_PROG | SLSB_TYPE_INPUT | SLSB_STATE_NOT_INIT) /* 0x80 */ +#define SLSB_P_INPUT_ACK \ + (SLSB_OWNER_PROG | SLSB_TYPE_INPUT | SLSB_STATE_EMPTY) /* 0x81 */ +#define SLSB_CU_INPUT_EMPTY \ + (SLSB_OWNER_CU | SLSB_TYPE_INPUT | SLSB_STATE_EMPTY) /* 0x41 */ +#define SLSB_P_INPUT_PRIMED \ + (SLSB_OWNER_PROG | SLSB_TYPE_INPUT | SLSB_STATE_PRIMED) /* 0x82 */ +#define SLSB_P_INPUT_HALTED \ + (SLSB_OWNER_PROG | SLSB_TYPE_INPUT | SLSB_STATE_HALTED) /* 0x8e */ +#define SLSB_P_INPUT_ERROR \ + (SLSB_OWNER_PROG | SLSB_TYPE_INPUT | SLSB_STATE_ERROR) /* 0x8f */ +#define SLSB_P_OUTPUT_NOT_INIT \ + (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_CU_OUTPUT_PRIMED \ + (SLSB_OWNER_CU | SLSB_TYPE_OUTPUT | SLSB_STATE_PRIMED) /* 0x62 */ +#define SLSB_P_OUTPUT_HALTED \ + (SLSB_OWNER_PROG | SLSB_TYPE_OUTPUT | SLSB_STATE_HALTED) /* 0xae */ +#define SLSB_P_OUTPUT_ERROR \ + (SLSB_OWNER_PROG | SLSB_TYPE_OUTPUT | SLSB_STATE_ERROR) /* 0xaf */ + +#define SLSB_ERROR_DURING_LOOKUP 0xff + +/* additional CIWs returned by extended Sense-ID */ +#define CIW_TYPE_EQUEUE 0x3 /* establish QDIO queues */ +#define CIW_TYPE_AQUEUE 0x4 /* activate QDIO queues */ -#define QDIO_HEXDUMP16(importance,header,ptr) \ -QDIO_PRINT_##importance(header "%02x %02x %02x %02x " \ - "%02x %02x %02x %02x %02x %02x %02x %02x " \ - "%02x %02x %02x %02x\n",*(((char*)ptr)), \ - *(((char*)ptr)+1),*(((char*)ptr)+2), \ - *(((char*)ptr)+3),*(((char*)ptr)+4), \ - *(((char*)ptr)+5),*(((char*)ptr)+6), \ - *(((char*)ptr)+7),*(((char*)ptr)+8), \ - *(((char*)ptr)+9),*(((char*)ptr)+10), \ - *(((char*)ptr)+11),*(((char*)ptr)+12), \ - *(((char*)ptr)+13),*(((char*)ptr)+14), \ - *(((char*)ptr)+15)); \ -QDIO_PRINT_##importance(header "%02x %02x %02x %02x %02x %02x %02x %02x " \ - "%02x %02x %02x %02x %02x %02x %02x %02x\n", \ - *(((char*)ptr)+16),*(((char*)ptr)+17), \ - *(((char*)ptr)+18),*(((char*)ptr)+19), \ - *(((char*)ptr)+20),*(((char*)ptr)+21), \ - *(((char*)ptr)+22),*(((char*)ptr)+23), \ - *(((char*)ptr)+24),*(((char*)ptr)+25), \ - *(((char*)ptr)+26),*(((char*)ptr)+27), \ - *(((char*)ptr)+28),*(((char*)ptr)+29), \ - *(((char*)ptr)+30),*(((char*)ptr)+31)); - -/****************** END OF DEBUG FACILITY STUFF *********************/ +/* flags for st qdio sch data */ +#define CHSC_FLAG_QDIO_CAPABILITY 0x80 +#define CHSC_FLAG_VALIDITY 0x40 -/* - * Some instructions as assembly - */ +/* qdio adapter-characteristics-1 flag */ +#define AC1_SIGA_INPUT_NEEDED 0x40 /* process input queues */ +#define AC1_SIGA_OUTPUT_NEEDED 0x20 /* process output queues */ +#define AC1_SIGA_SYNC_NEEDED 0x10 /* ask hypervisor to sync */ +#define AC1_AUTOMATIC_SYNC_ON_THININT 0x08 /* set by hypervisor */ +#define AC1_AUTOMATIC_SYNC_ON_OUT_PCI 0x04 /* set by hypervisor */ +#define AC1_SC_QEBSM_AVAILABLE 0x02 /* available for subchannel */ +#define AC1_SC_QEBSM_ENABLED 0x01 /* enabled for subchannel */ -static inline int -do_sqbs(unsigned long sch, unsigned char state, int queue, - unsigned int *start, unsigned int *count) -{ #ifdef CONFIG_64BIT - register unsigned long _ccq asm ("0") = *count; - register unsigned long _sch asm ("1") = sch; - unsigned long _queuestart = ((unsigned long)queue << 32) | *start; - - asm volatile( - " .insn rsy,0xeb000000008A,%1,0,0(%2)" - : "+d" (_ccq), "+d" (_queuestart) - : "d" ((unsigned long)state), "d" (_sch) - : "memory", "cc"); - *count = _ccq & 0xff; - *start = _queuestart & 0xff; +static inline int do_sqbs(u64 sch, unsigned char state, int queue, + int *start, int *count) +{ + register unsigned long _ccq asm ("0") = *count; + register unsigned long _sch asm ("1") = sch; + unsigned long _queuestart = ((unsigned long)queue << 32) | *start; - return (_ccq >> 32) & 0xff; -#else - return 0; -#endif + asm volatile( + " .insn rsy,0xeb000000008A,%1,0,0(%2)" + : "+d" (_ccq), "+d" (_queuestart) + : "d" ((unsigned long)state), "d" (_sch) + : "memory", "cc"); + *count = _ccq & 0xff; + *start = _queuestart & 0xff; + + return (_ccq >> 32) & 0xff; } -static inline int -do_eqbs(unsigned long sch, unsigned char *state, int queue, - unsigned int *start, unsigned int *count) +static inline int do_eqbs(u64 sch, unsigned char *state, int queue, + int *start, int *count) { -#ifdef CONFIG_64BIT register unsigned long _ccq asm ("0") = *count; register unsigned long _sch asm ("1") = sch; unsigned long _queuestart = ((unsigned long)queue << 32) | *start; @@ -299,338 +114,265 @@ do_eqbs(unsigned long sch, unsigned char " .insn rrf,0xB99c0000,%1,%2,0,0" : "+d" (_ccq), "+d" (_queuestart), "+d" (_state) : "d" (_sch) - : "memory", "cc" ); + : "memory", "cc"); *count = _ccq & 0xff; *start = _queuestart & 0xff; *state = _state & 0xff; return (_ccq >> 32) & 0xff; -#else - return 0; -#endif -} - - -static inline int -do_siga_sync(struct subchannel_id schid, unsigned int mask1, unsigned int mask2) -{ - register unsigned long reg0 asm ("0") = 2; - register struct subchannel_id reg1 asm ("1") = schid; - register unsigned long reg2 asm ("2") = mask1; - register unsigned long reg3 asm ("3") = mask2; - int cc; - - asm volatile( - " siga 0\n" - " ipm %0\n" - " srl %0,28\n" - : "=d" (cc) - : "d" (reg0), "d" (reg1), "d" (reg2), "d" (reg3) : "cc"); - return cc; -} - -static inline int -do_siga_input(struct subchannel_id schid, unsigned int mask) -{ - register unsigned long reg0 asm ("0") = 1; - register struct subchannel_id reg1 asm ("1") = schid; - register unsigned long reg2 asm ("2") = mask; - int cc; - - asm volatile( - " siga 0\n" - " ipm %0\n" - " srl %0,28\n" - : "=d" (cc) - : "d" (reg0), "d" (reg1), "d" (reg2) : "cc", "memory"); - return cc; } +#else +static inline int do_sqbs(u64 sch, unsigned char state, int queue, + int *start, int *count) { return 0; } +static inline int do_eqbs(u64 sch, unsigned char *state, int queue, + int *start, int *count) { return 0; } +#endif /* CONFIG_64BIT */ -static inline int -do_siga_output(unsigned long schid, unsigned long mask, __u32 *bb, - unsigned int fc) -{ - register unsigned long __fc asm("0") = fc; - register unsigned long __schid asm("1") = schid; - register unsigned long __mask asm("2") = mask; - int cc; - - asm volatile( - " siga 0\n" - "0: ipm %0\n" - " srl %0,28\n" - "1:\n" - EX_TABLE(0b,1b) - : "=d" (cc), "+d" (__fc), "+d" (__schid), "+d" (__mask) - : "0" (QDIO_SIGA_ERROR_ACCESS_EXCEPTION) - : "cc", "memory"); - (*bb) = ((unsigned int) __fc) >> 31; - return cc; -} - -static inline unsigned long -do_clear_global_summary(void) -{ - register unsigned long __fn asm("1") = 3; - register unsigned long __tmp asm("2"); - register unsigned long __time asm("3"); - - asm volatile( - " .insn rre,0xb2650000,2,0" - : "+d" (__fn), "=d" (__tmp), "=d" (__time)); - return __time; -} - -/* - * QDIO device commands returned by extended Sense-ID - */ -#define DEFAULT_ESTABLISH_QS_CMD 0x1b -#define DEFAULT_ESTABLISH_QS_COUNT 0x1000 -#define DEFAULT_ACTIVATE_QS_CMD 0x1f -#define DEFAULT_ACTIVATE_QS_COUNT 0 - -/* - * additional CIWs returned by extended Sense-ID - */ -#define CIW_TYPE_EQUEUE 0x3 /* establish QDIO queues */ -#define CIW_TYPE_AQUEUE 0x4 /* activate QDIO queues */ +struct qdio_irq; -#define QDIO_CHSC_RESPONSE_CODE_OK 1 -/* flags for st qdio sch data */ -#define CHSC_FLAG_QDIO_CAPABILITY 0x80 -#define CHSC_FLAG_VALIDITY 0x40 +struct siga_flag { + u8 input:1; + u8 output:1; + u8 sync:1; + u8 no_sync_ti:1; + u8 no_sync_out_ti:1; + u8 no_sync_out_pci:1; + u8:2; +} __attribute__ ((packed)); -#define CHSC_FLAG_SIGA_INPUT_NECESSARY 0x40 -#define CHSC_FLAG_SIGA_OUTPUT_NECESSARY 0x20 -#define CHSC_FLAG_SIGA_SYNC_NECESSARY 0x10 -#define CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS 0x08 -#define CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS 0x04 - -struct qdio_chsc_ssqd { +struct chsc_ssqd_area { struct chsc_header request; - u16 reserved1:10; - u16 ssid:2; - u16 fmt:4; + u16:10; + u8 ssid:2; + u8 fmt:4; u16 first_sch; - u16 reserved2; + u16:16; u16 last_sch; - u32 reserved3; + u32:32; struct chsc_header response; - u32 reserved4; - u8 flags; - u8 reserved5; - u16 sch; - u8 qfmt; - u8 parm; - u8 qdioac1; - u8 sch_class; - u8 pct; - u8 icnt; - u8 reserved7; - u8 ocnt; - u8 reserved8; - u8 mbccnt; - u16 qdioac2; - u64 sch_token; -}; + u32:32; + struct qdio_ssqd_desc qdio_ssqd; +} __attribute__ ((packed)); -struct qdio_perf_stats { -#ifdef CONFIG_64BIT - atomic64_t tl_runs; - atomic64_t outbound_tl_runs; - atomic64_t outbound_tl_runs_resched; - atomic64_t inbound_tl_runs; - atomic64_t inbound_tl_runs_resched; - atomic64_t inbound_thin_tl_runs; - atomic64_t inbound_thin_tl_runs_resched; - - atomic64_t siga_outs; - atomic64_t siga_ins; - atomic64_t siga_syncs; - atomic64_t pcis; - atomic64_t thinints; - atomic64_t fast_reqs; - - atomic64_t outbound_cnt; - atomic64_t inbound_cnt; -#else /* CONFIG_64BIT */ - atomic_t tl_runs; - atomic_t outbound_tl_runs; - atomic_t outbound_tl_runs_resched; - atomic_t inbound_tl_runs; - atomic_t inbound_tl_runs_resched; - atomic_t inbound_thin_tl_runs; - atomic_t inbound_thin_tl_runs_resched; - - atomic_t siga_outs; - atomic_t siga_ins; - atomic_t siga_syncs; - atomic_t pcis; - atomic_t thinints; - atomic_t fast_reqs; +struct scssc_area { + struct chsc_header request; + u16 operation_code; + u16:16; + u32:32; + u32:32; + u64 summary_indicator_addr; + u64 subchannel_indicator_addr; + u32 ks:4; + u32 kc:4; + u32:21; + u32 isc:3; + u32 word_with_d_bit; + u32:32; + struct subchannel_id schid; + u32 reserved[1004]; + struct chsc_header response; + u32:32; +} __attribute__ ((packed)); - atomic_t outbound_cnt; - atomic_t inbound_cnt; -#endif /* CONFIG_64BIT */ -}; +struct qdio_input_q { + /* input buffer acknowledgement flag */ + atomic_t polling; -/* unlikely as the later the better */ -#define SYNC_MEMORY if (unlikely(q->siga_sync)) qdio_siga_sync_q(q) -#define SYNC_MEMORY_ALL if (unlikely(q->siga_sync)) \ - qdio_siga_sync(q,~0U,~0U) -#define SYNC_MEMORY_ALL_OUTB if (unlikely(q->siga_sync)) \ - qdio_siga_sync(q,~0U,0) - -#define NOW qdio_get_micros() -#define SAVE_TIMESTAMP(q) q->timing.last_transfer_time=NOW -#define GET_SAVED_TIMESTAMP(q) (q->timing.last_transfer_time) -#define SAVE_FRONTIER(q,val) q->last_move_ftc=val -#define GET_SAVED_FRONTIER(q) (q->last_move_ftc) + /* last time of noticing incoming data */ + u64 timestamp; -#define MY_MODULE_STRING(x) #x + /* lock for clearing the acknowledgement */ + spinlock_t lock; +}; -#ifdef CONFIG_64BIT -#define QDIO_GET_ADDR(x) ((__u32)(unsigned long)x) -#else /* CONFIG_64BIT */ -#define QDIO_GET_ADDR(x) ((__u32)(long)x) -#endif /* CONFIG_64BIT */ +struct qdio_output_q { + /* failed siga-w attempts*/ + atomic_t busy_siga_counter; -struct qdio_q { - volatile struct slsb slsb; + /* start time of busy condition */ + u64 timestamp; - char unused[QDIO_MAX_BUFFERS_PER_Q]; + /* PCIs are enabled for the queue */ + unsigned int pci_out_enabled; - __u32 * dev_st_chg_ind; + /* timer to check for more outbound work */ + struct timer_list timer; +}; - int is_input_q; - struct subchannel_id schid; - struct ccw_device *cdev; +struct qdio_q { + struct slsb slsb; + union { + struct qdio_input_q in; + struct qdio_output_q out; + } u; - unsigned int is_iqdio_q; - unsigned int is_thinint_q; + /* queue number */ + unsigned int nr; - /* bit 0 means queue 0, bit 1 means queue 1, ... */ + /* bitmask of queue number */ unsigned int mask; - unsigned int q_no; - qdio_handler_t (*handler); - - /* points to the next buffer to be checked for having - * been processed by the card (outbound) - * or to the next buffer the program should check for (inbound) */ - volatile int first_to_check; - /* and the last time it was: */ - volatile int last_move_ftc; + /* input or output queue */ + unsigned int is_input_q; - atomic_t number_of_buffers_used; - atomic_t polling; + /* list of thinint input queues */ + struct list_head entry; - unsigned int siga_in; - unsigned int siga_out; - unsigned int siga_sync; - unsigned int siga_sync_done_on_thinints; - unsigned int siga_sync_done_on_outb_tis; - unsigned int hydra_gives_outbound_pcis; + /* upper-layer program handler */ + qdio_handler_t (*handler); - /* used to save beginning position when calling dd_handlers */ - int first_element_to_kick; + /* + * inbound: next buffer the program should check for + * outbound: next buffer to check for having been processed + * by the card + */ + int first_to_check; + + /* first_to_check of the last time */ + int last_move_ftc; - atomic_t use_count; - atomic_t is_in_shutdown; + /* beginning position for calling the program */ + int first_to_kick; - void *irq_ptr; + /* number of buffers in use by the adapter */ + atomic_t nr_buf_used; - struct timer_list timer; -#ifdef QDIO_USE_TIMERS_FOR_POLLING - atomic_t timer_already_set; - spinlock_t timer_lock; -#else /* QDIO_USE_TIMERS_FOR_POLLING */ + struct qdio_irq *irq_ptr; struct tasklet_struct tasklet; -#endif /* QDIO_USE_TIMERS_FOR_POLLING */ - - - enum qdio_irq_states state; - /* used to store the error condition during a data transfer */ + /* error condition during a data transfer */ unsigned int qdio_error; - unsigned int siga_error; - unsigned int error_status_flags; - - /* list of interesting queues */ - volatile struct qdio_q *list_next; - volatile struct qdio_q *list_prev; struct sl *sl; - volatile struct sbal *sbal[QDIO_MAX_BUFFERS_PER_Q]; + struct qdio_buffer *sbal[QDIO_MAX_BUFFERS_PER_Q]; - struct qdio_buffer *qdio_buffers[QDIO_MAX_BUFFERS_PER_Q]; - - unsigned long int_parm; - - /*struct { - int in_bh_check_limit; - int threshold; - } threshold_classes[QDIO_STATS_CLASSES];*/ - - struct { - /* inbound: the time to stop polling - outbound: the time to kick peer */ - int threshold; /* the real value */ - - /* outbound: last time of do_QDIO - inbound: last time of noticing incoming data */ - /*__u64 last_transfer_times[QDIO_STATS_NUMBER]; - int last_transfer_index; */ - - __u64 last_transfer_time; - __u64 busy_start; - } timing; - atomic_t busy_siga_counter; - unsigned int queue_type; - unsigned int is_pci_out; - - /* leave this member at the end. won't be cleared in qdio_fill_qs */ - struct slib *slib; /* a page is allocated under this pointer, - sl points into this page, offset PAGE_SIZE/2 - (after slib) */ + /* + * Warning: Leave this member at the end so it won't be cleared in + * qdio_fill_qs. A page is allocated under this pointer and used for + * slib and sl. slib is 2048 bytes big and sl points to offset + * PAGE_SIZE / 2. + */ + struct slib *slib; } __attribute__ ((aligned(256))); struct qdio_irq { - __u32 * volatile dev_st_chg_ind; + struct qib qib; + u32 *dsci; /* address of device state change indicator */ + struct ccw_device *cdev; unsigned long int_parm; struct subchannel_id schid; - - unsigned int is_iqdio_irq; - unsigned int is_thinint_irq; - unsigned int hydra_gives_outbound_pcis; - unsigned int sync_done_on_outb_pcis; - - /* QEBSM facility */ - unsigned int is_qebsm; - unsigned long sch_token; + unsigned long sch_token; /* QEBSM facility */ enum qdio_irq_states state; - unsigned int no_input_qs; - unsigned int no_output_qs; + struct siga_flag siga_flag; /* siga sync information from qdioac */ - unsigned char qdioac; + unsigned int nr_input_qs; + unsigned int nr_output_qs; struct ccw1 ccw; - struct ciw equeue; struct ciw aqueue; - struct qib qib; - - void (*original_int_handler) (struct ccw_device *, - unsigned long, struct irb *); + struct qdio_ssqd_desc ssqd_desc; + + void (*orig_handler) (struct ccw_device *, unsigned long, struct irb *); - /* leave these four members together at the end. won't be cleared in qdio_fill_irq */ + /* + * Warning: Leave these members together at the end so they won't be + * cleared in qdio_setup_irq. + */ struct qdr *qdr; + unsigned long chsc_page; + struct qdio_q *input_qs[QDIO_MAX_QUEUES_PER_IRQ]; struct qdio_q *output_qs[QDIO_MAX_QUEUES_PER_IRQ]; - struct semaphore setting_up_sema; + + struct mutex setup_mutex; }; -#endif + +/* helper functions */ +#define queue_type(q) q->irq_ptr->qib.qfmt + +#define is_thinint_irq(irq) \ + (irq->qib.qfmt == QDIO_IQDIO_QFMT || \ + css_general_characteristics.aif_osa) + +/* the highest iqdio queue is used for multicast */ +static inline int multicast_outbound(struct qdio_q *q) +{ + return ((q->irq_ptr->nr_output_qs > 1) && + (q->nr == q->irq_ptr->nr_output_qs - 1)); +} + +static inline unsigned long long get_usecs(void) +{ + return monotonic_clock() >> 12; +} + +#define pci_out_supported(q) \ + (q->irq_ptr->qib.ac & QIB_AC_OUTBOUND_PCI_SUPPORTED) +#define is_qebsm(q) (q->irq_ptr->sch_token != 0) + +#define need_siga_sync_thinint(q) (!q->irq_ptr->siga_flag.no_sync_ti) +#define need_siga_sync_out_thinint(q) (!q->irq_ptr->siga_flag.no_sync_out_ti) +#define need_siga_in(q) (q->irq_ptr->siga_flag.input) +#define need_siga_out(q) (q->irq_ptr->siga_flag.output) +#define need_siga_sync(q) (q->irq_ptr->siga_flag.sync) +#define siga_syncs_out_pci(q) (q->irq_ptr->siga_flag.no_sync_out_pci) + +#define for_each_input_queue(irq_ptr, q, i) \ + for (i = 0, q = irq_ptr->input_qs[0]; \ + i < irq_ptr->nr_input_qs; \ + q = irq_ptr->input_qs[++i]) +#define for_each_output_queue(irq_ptr, q, i) \ + for (i = 0, q = irq_ptr->output_qs[0]; \ + i < irq_ptr->nr_output_qs; \ + q = irq_ptr->output_qs[++i]) + +#define prev_buf(bufnr) \ + ((bufnr + QDIO_MAX_BUFFERS_MASK) & QDIO_MAX_BUFFERS_MASK) +#define next_buf(bufnr) \ + ((bufnr + 1) & QDIO_MAX_BUFFERS_MASK) +#define add_buf(bufnr, inc) \ + ((bufnr + inc) & QDIO_MAX_BUFFERS_MASK) + +/* prototypes for thin interrupt */ +void qdio_sync_after_thinint(struct qdio_q *q); +int get_buf_state(struct qdio_q *q, unsigned int bufnr, unsigned char *state); +void qdio_check_outbound_after_thinint(struct qdio_q *q); +int qdio_inbound_q_moved(struct qdio_q *q); +void qdio_kick_inbound_handler(struct qdio_q *q); +void qdio_stop_polling(struct qdio_q *q); +int qdio_siga_sync_q(struct qdio_q *q); + +void qdio_setup_thinint(struct qdio_irq *irq_ptr); +int qdio_establish_thinint(struct qdio_irq *irq_ptr); +void qdio_shutdown_thinint(struct qdio_irq *irq_ptr); +void tiqdio_add_input_queues(struct qdio_irq *irq_ptr); +void tiqdio_remove_input_queues(struct qdio_irq *irq_ptr); +void tiqdio_inbound_processing(unsigned long q); +int tiqdio_allocate_memory(void); +void tiqdio_free_memory(void); +int tiqdio_register_thinints(void); +void tiqdio_unregister_thinints(void); + +/* prototypes for setup */ +void qdio_init_buf_states(struct qdio_q *q); +void qdio_inbound_processing(unsigned long data); +void qdio_outbound_processing(unsigned long data); +void qdio_outbound_timer(unsigned long data); +void qdio_int_handler(struct ccw_device *cdev, unsigned long intparm, + struct irb *irb); +int qdio_allocate_qs(struct qdio_irq *irq_ptr, int nr_input_qs, + int nr_output_qs); +void qdio_setup_ssqd_info(struct qdio_irq *irq_ptr); +int qdio_setup_irq(struct qdio_initialize *init_data); +void qdio_print_subchannel_info(struct qdio_irq *irq_ptr, + struct ccw_device *cdev); +void qdio_release_memory(struct qdio_irq *irq_ptr); +int qdio_setup_init(void); +void qdio_setup_exit(void); + +#endif /* _CIO_QDIO_H */ Index: quilt-2.6/drivers/s390/cio/qdio_perf.c =================================================================== --- /dev/null +++ quilt-2.6/drivers/s390/cio/qdio_perf.c @@ -0,0 +1,151 @@ +/* + * drivers/s390/cio/qdio_perf.c + * + * Copyright IBM Corp. 2008 + * + * Author: Jan Glauber (jang@linux.vnet.ibm.com) + */ +#include +#include +#include +#include + +#include "cio.h" +#include "css.h" +#include "device.h" +#include "ioasm.h" +#include "chsc.h" +#include "qdio_debug.h" +#include "qdio_perf.h" + +int qdio_performance_stats; +struct qdio_perf_stats perf_stats; + +#ifdef CONFIG_PROC_FS +static struct proc_dir_entry *qdio_perf_pde; +#endif + +inline void qdio_perf_stat_inc(atomic_long_t *count) +{ + if (qdio_performance_stats) + atomic_long_inc(count); +} + +inline void qdio_perf_stat_dec(atomic_long_t *count) +{ + if (qdio_performance_stats) + atomic_long_dec(count); +} + +/* + * procfs functions + */ +static int qdio_perf_proc_show(struct seq_file *m, void *v) +{ + seq_printf(m, "Number of qdio interrupts\t\t\t: %li\n", + (long)atomic_long_read(&perf_stats.qdio_int)); + seq_printf(m, "Number of PCI interrupts\t\t\t: %li\n", + (long)atomic_long_read(&perf_stats.pci_int)); + seq_printf(m, "Number of adapter interrupts\t\t\t: %li\n", + (long)atomic_long_read(&perf_stats.thin_int)); + seq_printf(m, "\n"); + seq_printf(m, "Inbound tasklet runs\t\t\t\t: %li\n", + (long)atomic_long_read(&perf_stats.tasklet_inbound)); + seq_printf(m, "Outbound tasklet runs\t\t\t\t: %li\n", + (long)atomic_long_read(&perf_stats.tasklet_outbound)); + seq_printf(m, "Adapter interrupt tasklet runs/loops\t\t: %li/%li\n", + (long)atomic_long_read(&perf_stats.tasklet_thinint), + (long)atomic_long_read(&perf_stats.tasklet_thinint_loop)); + seq_printf(m, "Adapter interrupt inbound tasklet runs/loops\t: %li/%li\n", + (long)atomic_long_read(&perf_stats.thinint_inbound), + (long)atomic_long_read(&perf_stats.thinint_inbound_loop)); + seq_printf(m, "\n"); + seq_printf(m, "Number of SIGA In issued\t\t\t: %li\n", + (long)atomic_long_read(&perf_stats.siga_in)); + seq_printf(m, "Number of SIGA Out issued\t\t\t: %li\n", + (long)atomic_long_read(&perf_stats.siga_out)); + seq_printf(m, "Number of SIGA Sync issued\t\t\t: %li\n", + (long)atomic_long_read(&perf_stats.siga_sync)); + seq_printf(m, "\n"); + seq_printf(m, "Number of inbound transfers\t\t\t: %li\n", + (long)atomic_long_read(&perf_stats.inbound_handler)); + seq_printf(m, "Number of outbound transfers\t\t\t: %li\n", + (long)atomic_long_read(&perf_stats.outbound_handler)); + seq_printf(m, "\n"); + seq_printf(m, "Number of fast requeues (outg. SBAL w/o SIGA)\t: %li\n", + (long)atomic_long_read(&perf_stats.fast_requeue)); + seq_printf(m, "Number of outbound tasklet mod_timer calls\t: %li\n", + (long)atomic_long_read(&perf_stats.debug_tl_out_timer)); + seq_printf(m, "Number of stop polling calls\t\t\t: %li\n", + (long)atomic_long_read(&perf_stats.debug_stop_polling)); + seq_printf(m, "AI inbound tasklet loops after stop polling\t: %li\n", + (long)atomic_long_read(&perf_stats.thinint_inbound_loop2)); + seq_printf(m, "\n"); + return 0; +} +static int qdio_perf_seq_open(struct inode *inode, struct file *filp) +{ + return single_open(filp, qdio_perf_proc_show, NULL); +} + +static struct file_operations qdio_perf_proc_fops = { + .owner = THIS_MODULE, + .open = qdio_perf_seq_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + +/* + * sysfs functions + */ +static ssize_t qdio_perf_stats_show(struct bus_type *bus, char *buf) +{ + return sprintf(buf, "%i\n", qdio_performance_stats ? 1 : 0); +} + +static ssize_t qdio_perf_stats_store(struct bus_type *bus, + const char *buf, size_t count) +{ + unsigned long i; + + if (strict_strtoul(buf, 16, &i) != 0) + return -EINVAL; + if ((i != 0) && (i != 1)) + return -EINVAL; + if (i == qdio_performance_stats) + return count; + + qdio_performance_stats = i; + /* reset performance statistics */ + if (i == 0) + memset(&perf_stats, 0, sizeof(struct qdio_perf_stats)); + return count; +} + +static BUS_ATTR(qdio_performance_stats, 0644, qdio_perf_stats_show, + qdio_perf_stats_store); + +int __init qdio_setup_perf_stats(void) +{ + int rc; + + rc = bus_create_file(&ccw_bus_type, &bus_attr_qdio_performance_stats); + if (rc) + return rc; + +#ifdef CONFIG_PROC_FS + memset(&perf_stats, 0, sizeof(struct qdio_perf_stats)); + qdio_perf_pde = proc_create("qdio_perf", S_IFREG | S_IRUGO, + &proc_root, &qdio_perf_proc_fops); +#endif + return 0; +} + +void __exit qdio_remove_perf_stats(void) +{ +#ifdef CONFIG_PROC_FS + remove_proc_entry("qdio_perf", &proc_root); +#endif + bus_remove_file(&ccw_bus_type, &bus_attr_qdio_performance_stats); +} Index: quilt-2.6/drivers/s390/cio/qdio_perf.h =================================================================== --- /dev/null +++ quilt-2.6/drivers/s390/cio/qdio_perf.h @@ -0,0 +1,54 @@ +/* + * drivers/s390/cio/qdio_perf.h + * + * Copyright IBM Corp. 2008 + * + * Author: Jan Glauber (jang@linux.vnet.ibm.com) + */ +#ifndef QDIO_PERF_H +#define QDIO_PERF_H + +#include +#include +#include + +struct qdio_perf_stats { + /* interrupt handler calls */ + atomic_long_t qdio_int; + atomic_long_t pci_int; + atomic_long_t thin_int; + + /* tasklet runs */ + atomic_long_t tasklet_inbound; + atomic_long_t tasklet_outbound; + atomic_long_t tasklet_thinint; + atomic_long_t tasklet_thinint_loop; + atomic_long_t thinint_inbound; + atomic_long_t thinint_inbound_loop; + atomic_long_t thinint_inbound_loop2; + + /* signal adapter calls */ + atomic_long_t siga_out; + atomic_long_t siga_in; + atomic_long_t siga_sync; + + /* misc */ + atomic_long_t inbound_handler; + atomic_long_t outbound_handler; + atomic_long_t fast_requeue; + + /* for debugging */ + atomic_long_t debug_tl_out_timer; + atomic_long_t debug_stop_polling; +}; + +extern struct qdio_perf_stats perf_stats; +extern int qdio_performance_stats; + +int qdio_setup_perf_stats(void); +void qdio_remove_perf_stats(void); + +extern void qdio_perf_stat_inc(atomic_long_t *count); +extern void qdio_perf_stat_dec(atomic_long_t *count); + +#endif Index: quilt-2.6/drivers/s390/cio/qdio_setup.c =================================================================== --- /dev/null +++ quilt-2.6/drivers/s390/cio/qdio_setup.c @@ -0,0 +1,516 @@ +/* + * driver/s390/cio/qdio_setup.c + * + * qdio queue initialization + * + * Copyright (C) IBM Corp. 2008 + * Author(s): Jan Glauber + */ +#include +#include +#include + +#include "cio.h" +#include "css.h" +#include "device.h" +#include "ioasm.h" +#include "chsc.h" +#include "qdio.h" +#include "qdio_debug.h" + +static struct kmem_cache *qdio_q_cache; + +/* + * qib_param_field: pointer to 128 bytes or NULL, if no param field + * nr_input_qs: pointer to nr_queues*128 words of data or NULL + */ +static void set_impl_params(struct qdio_irq *irq_ptr, + unsigned int qib_param_field_format, + unsigned char *qib_param_field, + unsigned long *input_slib_elements, + unsigned long *output_slib_elements) +{ + struct qdio_q *q; + int i, j; + + if (!irq_ptr) + return; + + WARN_ON((unsigned long)&irq_ptr->qib & 0xff); + irq_ptr->qib.pfmt = qib_param_field_format; + if (qib_param_field) + memcpy(irq_ptr->qib.parm, qib_param_field, + QDIO_MAX_BUFFERS_PER_Q); + + if (!input_slib_elements) + goto output; + + for_each_input_queue(irq_ptr, q, i) { + for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; j++) + q->slib->slibe[j].parms = + input_slib_elements[i * QDIO_MAX_BUFFERS_PER_Q + j]; + } +output: + if (!output_slib_elements) + return; + + for_each_output_queue(irq_ptr, q, i) { + for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; j++) + q->slib->slibe[j].parms = + output_slib_elements[i * QDIO_MAX_BUFFERS_PER_Q + j]; + } +} + +static int __qdio_allocate_qs(struct qdio_q **irq_ptr_qs, int nr_queues) +{ + struct qdio_q *q; + int i; + + for (i = 0; i < nr_queues; i++) { + q = kmem_cache_alloc(qdio_q_cache, GFP_KERNEL); + if (!q) + return -ENOMEM; + WARN_ON((unsigned long)q & 0xff); + + q->slib = (struct slib *) __get_free_page(GFP_KERNEL); + if (!q->slib) { + kmem_cache_free(qdio_q_cache, q); + return -ENOMEM; + } + WARN_ON((unsigned long)q->slib & 0x7ff); + irq_ptr_qs[i] = q; + } + return 0; +} + +int qdio_allocate_qs(struct qdio_irq *irq_ptr, int nr_input_qs, int nr_output_qs) +{ + int rc; + + rc = __qdio_allocate_qs(irq_ptr->input_qs, nr_input_qs); + if (rc) + return rc; + rc = __qdio_allocate_qs(irq_ptr->output_qs, nr_output_qs); + return rc; +} + +static void setup_queues_misc(struct qdio_q *q, struct qdio_irq *irq_ptr, + qdio_handler_t *handler, int i) +{ + /* must be cleared by every qdio_establish */ + memset(q, 0, ((char *)&q->slib) - ((char *)q)); + memset(q->slib, 0, PAGE_SIZE); + + q->irq_ptr = irq_ptr; + q->mask = 1 << (31 - i); + q->nr = i; + q->handler = handler; +} + +static void setup_storage_lists(struct qdio_q *q, struct qdio_irq *irq_ptr, + void **sbals_array, char *dbf_text, int i) +{ + struct qdio_q *prev; + int j; + + QDIO_DBF_TEXT0(0, setup, dbf_text); + QDIO_DBF_HEX0(0, setup, &q, sizeof(void *)); + + q->sl = (struct sl *)((char *)q->slib + PAGE_SIZE / 2); + + /* fill in sbal */ + for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; j++) { + q->sbal[j] = *sbals_array++; + WARN_ON((unsigned long)q->sbal[j] & 0xff); + } + + /* fill in slib */ + if (i > 0) { + prev = (q->is_input_q) ? irq_ptr->input_qs[i - 1] + : irq_ptr->output_qs[i - 1]; + prev->slib->nsliba = (unsigned long)q->slib; + } + + q->slib->sla = (unsigned long)q->sl; + q->slib->slsba = (unsigned long)&q->slsb.val[0]; + + /* fill in sl */ + for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; j++) + q->sl->element[j].sbal = (unsigned long)q->sbal[j]; + + QDIO_DBF_TEXT2(0, setup, "sl-sb-b0"); + QDIO_DBF_HEX2(0, setup, q->sl, sizeof(void *)); + QDIO_DBF_HEX2(0, setup, &q->slsb, sizeof(void *)); + QDIO_DBF_HEX2(0, setup, q->sbal, sizeof(void *)); + + qdio_init_buf_states(q); +} + +static void setup_queues(struct qdio_irq *irq_ptr, + struct qdio_initialize *qdio_init) +{ + char dbf_text[20]; + struct qdio_q *q; + void **input_sbal_array = qdio_init->input_sbal_addr_array; + void **output_sbal_array = qdio_init->output_sbal_addr_array; + int i; + + sprintf(dbf_text, "qfqs%4x", qdio_init->cdev->private->schid.sch_no); + QDIO_DBF_TEXT0(0, setup, dbf_text); + + for_each_input_queue(irq_ptr, q, i) { + sprintf(dbf_text, "in-q%4x", i); + setup_queues_misc(q, irq_ptr, qdio_init->input_handler, i); + + q->is_input_q = 1; + spin_lock_init(&q->u.in.lock); + setup_storage_lists(q, irq_ptr, input_sbal_array, dbf_text, i); + input_sbal_array += QDIO_MAX_BUFFERS_PER_Q; + + if (is_thinint_irq(irq_ptr)) + tasklet_init(&q->tasklet, tiqdio_inbound_processing, + (unsigned long) q); + else + tasklet_init(&q->tasklet, qdio_inbound_processing, + (unsigned long) q); + } + + for_each_output_queue(irq_ptr, q, i) { + sprintf(dbf_text, "outq%4x", i); + setup_queues_misc(q, irq_ptr, qdio_init->output_handler, i); + + q->is_input_q = 0; + setup_storage_lists(q, irq_ptr, output_sbal_array, + dbf_text, i); + output_sbal_array += QDIO_MAX_BUFFERS_PER_Q; + + tasklet_init(&q->tasklet, qdio_outbound_processing, + (unsigned long) q); + setup_timer(&q->u.out.timer, (void(*)(unsigned long)) + &qdio_outbound_timer, (unsigned long)q); + } +} + +static void process_ac_flags(struct qdio_irq *irq_ptr, unsigned char qdioac) +{ + if (qdioac & AC1_SIGA_INPUT_NEEDED) + irq_ptr->siga_flag.input = 1; + if (qdioac & AC1_SIGA_OUTPUT_NEEDED) + irq_ptr->siga_flag.output = 1; + if (qdioac & AC1_SIGA_SYNC_NEEDED) + irq_ptr->siga_flag.sync = 1; + if (qdioac & AC1_AUTOMATIC_SYNC_ON_THININT) + irq_ptr->siga_flag.no_sync_ti = 1; + if (qdioac & AC1_AUTOMATIC_SYNC_ON_OUT_PCI) + irq_ptr->siga_flag.no_sync_out_pci = 1; + + if (irq_ptr->siga_flag.no_sync_out_pci && + irq_ptr->siga_flag.no_sync_ti) + irq_ptr->siga_flag.no_sync_out_ti = 1; +} + +static void check_and_setup_qebsm(struct qdio_irq *irq_ptr, + unsigned char qdioac, unsigned long token) +{ + char dbf_text[15]; + + if (!(irq_ptr->qib.rflags & QIB_RFLAGS_ENABLE_QEBSM)) + goto no_qebsm; + if (!(qdioac & AC1_SC_QEBSM_AVAILABLE) || + (!(qdioac & AC1_SC_QEBSM_ENABLED))) + goto no_qebsm; + + irq_ptr->sch_token = token; + + QDIO_DBF_TEXT0(0, setup, "V=V:1"); + sprintf(dbf_text, "%8lx", irq_ptr->sch_token); + QDIO_DBF_TEXT0(0, setup, dbf_text); + return; + +no_qebsm: + irq_ptr->sch_token = 0; + irq_ptr->qib.rflags &= ~QIB_RFLAGS_ENABLE_QEBSM; + QDIO_DBF_TEXT0(0, setup, "noV=V"); +} + +static int __get_ssqd_info(struct qdio_irq *irq_ptr) +{ + struct chsc_ssqd_area *ssqd; + int rc; + + QDIO_DBF_TEXT0(0, setup, "getssqd"); + ssqd = (struct chsc_ssqd_area *)irq_ptr->chsc_page; + memset(ssqd, 0, PAGE_SIZE); + + ssqd->request = (struct chsc_header) { + .length = 0x0010, + .code = 0x0024, + }; + ssqd->first_sch = irq_ptr->schid.sch_no; + ssqd->last_sch = irq_ptr->schid.sch_no; + ssqd->ssid = irq_ptr->schid.ssid; + + if (chsc(ssqd)) + return -EIO; + rc = chsc_error_from_response(ssqd->response.code); + if (rc) + return rc; + + if (!(ssqd->qdio_ssqd.flags & CHSC_FLAG_QDIO_CAPABILITY) || + !(ssqd->qdio_ssqd.flags & CHSC_FLAG_VALIDITY) || + (ssqd->qdio_ssqd.sch != irq_ptr->schid.sch_no)) + return -EINVAL; + + memcpy(&irq_ptr->ssqd_desc, &ssqd->qdio_ssqd, + sizeof(struct qdio_ssqd_desc)); + return 0; +} + +void qdio_setup_ssqd_info(struct qdio_irq *irq_ptr) +{ + unsigned char qdioac; + char dbf_text[15]; + int rc; + + rc = __get_ssqd_info(irq_ptr); + if (rc) { + QDIO_DBF_TEXT2(0, setup, "ssqdasig"); + sprintf(dbf_text, "schno%x", irq_ptr->schid.sch_no); + QDIO_DBF_TEXT2(0, setup, dbf_text); + sprintf(dbf_text, "rc:%d", rc); + QDIO_DBF_TEXT2(0, setup, dbf_text); + /* all flags set, worst case */ + qdioac = AC1_SIGA_INPUT_NEEDED | AC1_SIGA_OUTPUT_NEEDED | + AC1_SIGA_SYNC_NEEDED; + } else + qdioac = irq_ptr->ssqd_desc.qdioac1; + + check_and_setup_qebsm(irq_ptr, qdioac, irq_ptr->ssqd_desc.sch_token); + process_ac_flags(irq_ptr, qdioac); + + sprintf(dbf_text, "qdioac%2x", qdioac); + QDIO_DBF_TEXT2(0, setup, dbf_text); +} + +void qdio_release_memory(struct qdio_irq *irq_ptr) +{ + struct qdio_q *q; + int i; + + /* + * Must check queue array manually since irq_ptr->nr_input_queues / + * irq_ptr->nr_input_queues may not yet be set. + */ + for (i = 0; i < QDIO_MAX_QUEUES_PER_IRQ; i++) { + q = irq_ptr->input_qs[i]; + if (q) { + free_page((unsigned long) q->slib); + kmem_cache_free(qdio_q_cache, q); + } + } + for (i = 0; i < QDIO_MAX_QUEUES_PER_IRQ; i++) { + q = irq_ptr->output_qs[i]; + if (q) { + free_page((unsigned long) q->slib); + kmem_cache_free(qdio_q_cache, q); + } + } + kfree(irq_ptr->qdr); + free_page(irq_ptr->chsc_page); + free_page((unsigned long) irq_ptr); +} + +static void __qdio_allocate_fill_qdr(struct qdio_irq *irq_ptr, + struct qdio_q **irq_ptr_qs, + int i, int nr) +{ + irq_ptr->qdr->qdf0[i + nr].sliba = + (unsigned long)irq_ptr_qs[i]->slib; + + irq_ptr->qdr->qdf0[i + nr].sla = + (unsigned long)irq_ptr_qs[i]->sl; + + irq_ptr->qdr->qdf0[i + nr].slsba = + (unsigned long)&irq_ptr_qs[i]->slsb.val[0]; + + irq_ptr->qdr->qdf0[i + nr].akey = PAGE_DEFAULT_KEY; + irq_ptr->qdr->qdf0[i + nr].bkey = PAGE_DEFAULT_KEY; + irq_ptr->qdr->qdf0[i + nr].ckey = PAGE_DEFAULT_KEY; + irq_ptr->qdr->qdf0[i + nr].dkey = PAGE_DEFAULT_KEY; +} + +static void setup_qdr(struct qdio_irq *irq_ptr, + struct qdio_initialize *qdio_init) +{ + int i; + + irq_ptr->qdr->qfmt = qdio_init->q_format; + irq_ptr->qdr->iqdcnt = qdio_init->no_input_qs; + irq_ptr->qdr->oqdcnt = qdio_init->no_output_qs; + irq_ptr->qdr->iqdsz = sizeof(struct qdesfmt0) / 4; /* size in words */ + irq_ptr->qdr->oqdsz = sizeof(struct qdesfmt0) / 4; + irq_ptr->qdr->qiba = (unsigned long)&irq_ptr->qib; + irq_ptr->qdr->qkey = PAGE_DEFAULT_KEY; + + for (i = 0; i < qdio_init->no_input_qs; i++) + __qdio_allocate_fill_qdr(irq_ptr, irq_ptr->input_qs, i, 0); + + for (i = 0; i < qdio_init->no_output_qs; i++) + __qdio_allocate_fill_qdr(irq_ptr, irq_ptr->output_qs, i, + qdio_init->no_input_qs); +} + +static void setup_qib(struct qdio_irq *irq_ptr, + struct qdio_initialize *init_data) +{ + if (css_general_characteristics.qebsm) + irq_ptr->qib.rflags |= QIB_RFLAGS_ENABLE_QEBSM; + + irq_ptr->qib.qfmt = init_data->q_format; + if (init_data->no_input_qs) + irq_ptr->qib.isliba = + (unsigned long)(irq_ptr->input_qs[0]->slib); + if (init_data->no_output_qs) + irq_ptr->qib.osliba = + (unsigned long)(irq_ptr->output_qs[0]->slib); + memcpy(irq_ptr->qib.ebcnam, init_data->adapter_name, 8); +} + +int qdio_setup_irq(struct qdio_initialize *init_data) +{ + struct ciw *ciw; + struct qdio_irq *irq_ptr = init_data->cdev->private->qdio_data; + int rc; + + memset(irq_ptr, 0, ((char *)&irq_ptr->qdr) - ((char *)irq_ptr)); + /* wipes qib.ac, required by ar7063 */ + memset(irq_ptr->qdr, 0, sizeof(struct qdr)); + + irq_ptr->int_parm = init_data->int_parm; + irq_ptr->nr_input_qs = init_data->no_input_qs; + irq_ptr->nr_output_qs = init_data->no_output_qs; + + irq_ptr->schid = ccw_device_get_subchannel_id(init_data->cdev); + irq_ptr->cdev = init_data->cdev; + setup_queues(irq_ptr, init_data); + + if (!try_module_get(THIS_MODULE)) { + rc = -EINVAL; + goto out_err; + } + + setup_qib(irq_ptr, init_data); + qdio_setup_thinint(irq_ptr); + set_impl_params(irq_ptr, init_data->qib_param_field_format, + init_data->qib_param_field, + init_data->input_slib_elements, + init_data->output_slib_elements); + + /* fill input and output descriptors */ + setup_qdr(irq_ptr, init_data); + + /* qdr, qib, sls, slsbs, slibs, sbales are filled now */ + + /* get qdio commands */ + ciw = ccw_device_get_ciw(init_data->cdev, CIW_TYPE_EQUEUE); + if (!ciw) { + QDIO_DBF_TEXT2(1, setup, "no eq"); + rc = -EINVAL; + goto out_err; + } + irq_ptr->equeue = *ciw; + + ciw = ccw_device_get_ciw(init_data->cdev, CIW_TYPE_AQUEUE); + if (!ciw) { + QDIO_DBF_TEXT2(1, setup, "no aq"); + rc = -EINVAL; + goto out_err; + } + irq_ptr->aqueue = *ciw; + + /* set new interrupt handler */ + irq_ptr->orig_handler = init_data->cdev->handler; + init_data->cdev->handler = qdio_int_handler; + return 0; +out_err: + qdio_release_memory(irq_ptr); + return rc; +} + +void qdio_print_subchannel_info(struct qdio_irq *irq_ptr, + struct ccw_device *cdev) +{ + char s[80]; + + sprintf(s, "%s ", cdev->dev.bus_id); + + switch (irq_ptr->qib.qfmt) { + case QDIO_QETH_QFMT: + sprintf(s + strlen(s), "OSADE "); + break; + case QDIO_ZFCP_QFMT: + sprintf(s + strlen(s), "ZFCP "); + break; + case QDIO_IQDIO_QFMT: + sprintf(s + strlen(s), "HiperSockets "); + break; + } + sprintf(s + strlen(s), "using: "); + + if (!is_thinint_irq(irq_ptr)) + sprintf(s + strlen(s), "no"); + sprintf(s + strlen(s), "AdapterInterrupts "); + if (!(irq_ptr->sch_token != 0)) + sprintf(s + strlen(s), "no"); + sprintf(s + strlen(s), "QEBSM "); + if (!(irq_ptr->qib.ac & QIB_AC_OUTBOUND_PCI_SUPPORTED)) + sprintf(s + strlen(s), "no"); + sprintf(s + strlen(s), "OutboundPCI "); + if (!css_general_characteristics.aif_tdd) + sprintf(s + strlen(s), "no"); + sprintf(s + strlen(s), "TDD\n"); + printk(KERN_INFO "qdio: %s", s); + + memset(s, 0, sizeof(s)); + sprintf(s, "%s SIGA required: ", cdev->dev.bus_id); + if (irq_ptr->siga_flag.input) + sprintf(s + strlen(s), "Read "); + if (irq_ptr->siga_flag.output) + sprintf(s + strlen(s), "Write "); + if (irq_ptr->siga_flag.sync) + sprintf(s + strlen(s), "Sync "); + if (!irq_ptr->siga_flag.no_sync_ti) + sprintf(s + strlen(s), "SyncAI "); + if (!irq_ptr->siga_flag.no_sync_out_ti) + sprintf(s + strlen(s), "SyncOutAI "); + if (!irq_ptr->siga_flag.no_sync_out_pci) + sprintf(s + strlen(s), "SyncOutPCI"); + sprintf(s + strlen(s), "\n"); + printk(KERN_INFO "qdio: %s", s); +} + +int __init qdio_setup_init(void) +{ + char dbf_text[15]; + + qdio_q_cache = kmem_cache_create("qdio_q", sizeof(struct qdio_q), + 256, 0, NULL); + if (!qdio_q_cache) + return -ENOMEM; + + /* Check for OSA/FCP thin interrupts (bit 67). */ + sprintf(dbf_text, "thini%1x", + (css_general_characteristics.aif_osa) ? 1 : 0); + QDIO_DBF_TEXT0(0, setup, dbf_text); + + /* Check for QEBSM support in general (bit 58). */ + sprintf(dbf_text, "cssQBS:%1x", + (css_general_characteristics.qebsm) ? 1 : 0); + QDIO_DBF_TEXT0(0, setup, dbf_text); + return 0; +} + +void __exit qdio_setup_exit(void) +{ + kmem_cache_destroy(qdio_q_cache); +} Index: quilt-2.6/drivers/s390/cio/qdio_thinint.c =================================================================== --- /dev/null +++ quilt-2.6/drivers/s390/cio/qdio_thinint.c @@ -0,0 +1,380 @@ +/* + * linux/drivers/s390/cio/thinint_qdio.c + * + * thin interrupt support for qdio + * + * Copyright 2000-2008 IBM Corp. + * Author(s): Utz Bacher + * Cornelia Huck + * Jan Glauber + */ +#include +#include +#include +#include +#include +#include + +#include "cio.h" +#include "ioasm.h" +#include "qdio.h" +#include "qdio_debug.h" +#include "qdio_perf.h" + +/* + * Restriction: only 63 iqdio subchannels would have its own indicator, + * after that, subsequent subchannels share one indicator + */ +#define TIQDIO_NR_NONSHARED_IND 63 +#define TIQDIO_NR_INDICATORS (TIQDIO_NR_NONSHARED_IND + 1) +#define TIQDIO_SHARED_IND 63 + +/* list of thin interrupt input queues */ +static LIST_HEAD(tiq_list); + +/* adapter local summary indicator */ +static unsigned char *tiqdio_alsi; + +/* device state change indicators */ +struct indicator_t { + u32 ind; /* u32 because of compare-and-swap performance */ + atomic_t count; /* use count, 0 or 1 for non-shared indicators */ +}; +static struct indicator_t *indicators; + +static void tiqdio_tasklet_fn(unsigned long data); +static DECLARE_TASKLET(tiqdio_tasklet, tiqdio_tasklet_fn, 0); + +static int css_qdio_omit_svs; + +static inline unsigned long do_clear_global_summary(void) +{ + register unsigned long __fn asm("1") = 3; + register unsigned long __tmp asm("2"); + register unsigned long __time asm("3"); + + asm volatile( + " .insn rre,0xb2650000,2,0" + : "+d" (__fn), "=d" (__tmp), "=d" (__time)); + return __time; +} + +/* returns addr for the device state change indicator */ +static u32 *get_indicator(void) +{ + int i; + + for (i = 0; i < TIQDIO_NR_NONSHARED_IND; i++) + if (!atomic_read(&indicators[i].count)) { + atomic_set(&indicators[i].count, 1); + return &indicators[i].ind; + } + + /* use the shared indicator */ + atomic_inc(&indicators[TIQDIO_SHARED_IND].count); + return &indicators[TIQDIO_SHARED_IND].ind; +} + +static void put_indicator(u32 *addr) +{ + int i; + + if (!addr) + return; + + i = (addr - (u32 *)indicators) / sizeof(struct indicator_t); + atomic_dec(&indicators[i].count); +} + +void tiqdio_add_input_queues(struct qdio_irq *irq_ptr) +{ + struct qdio_q *q; + int i; + + /* No TDD facility? If we must use SIGA-s we can also omit SVS. */ + if (!css_qdio_omit_svs && irq_ptr->siga_flag.sync) + css_qdio_omit_svs = 1; + + for_each_input_queue(irq_ptr, q, i) { + list_add_rcu(&q->entry, &tiq_list); + synchronize_rcu(); + } + xchg(irq_ptr->dsci, 1); + tasklet_schedule(&tiqdio_tasklet); +} + +/* + * we cannot stop the tiqdio tasklet here since it is for all + * thinint qdio devices and it must run as long as there is a + * thinint device left + */ +void tiqdio_remove_input_queues(struct qdio_irq *irq_ptr) +{ + struct qdio_q *q; + int i; + + for_each_input_queue(irq_ptr, q, i) { + list_del_rcu(&q->entry); + synchronize_rcu(); + } +} + +static inline int tiqdio_inbound_q_done(struct qdio_q *q) +{ + unsigned char state; + + if (!atomic_read(&q->nr_buf_used)) + return 1; + + qdio_siga_sync_q(q); + get_buf_state(q, q->first_to_check, &state); + + if (state == SLSB_P_INPUT_PRIMED) + /* more work coming */ + return 0; + return 1; +} + +static inline int shared_ind(struct qdio_irq *irq_ptr) +{ + return irq_ptr->dsci == &indicators[TIQDIO_SHARED_IND].ind; +} + +static void __tiqdio_inbound_processing(struct qdio_q *q) +{ + qdio_perf_stat_inc(&perf_stats.thinint_inbound); + qdio_sync_after_thinint(q); + + /* + * Maybe we have work on our outbound queues... at least + * we have to check the PCI capable queues. + */ + qdio_check_outbound_after_thinint(q); + +again: + if (!qdio_inbound_q_moved(q)) + return; + + qdio_kick_inbound_handler(q); + + if (!tiqdio_inbound_q_done(q)) { + qdio_perf_stat_inc(&perf_stats.thinint_inbound_loop); + goto again; + } + + qdio_stop_polling(q); + /* + * We need to check again to not lose initiative after + * resetting the ACK state. + */ + if (!tiqdio_inbound_q_done(q)) { + qdio_perf_stat_inc(&perf_stats.thinint_inbound_loop2); + goto again; + } +} + +void tiqdio_inbound_processing(unsigned long data) +{ + struct qdio_q *q = (struct qdio_q *)data; + + __tiqdio_inbound_processing(q); +} + +/* check for work on all inbound thinint queues */ +static void tiqdio_tasklet_fn(unsigned long data) +{ + struct qdio_q *q; + + qdio_perf_stat_inc(&perf_stats.tasklet_thinint); +again: + + /* protect tiq_list entries, only changed in activate or shutdown */ + rcu_read_lock(); + + list_for_each_entry_rcu(q, &tiq_list, entry) + /* only process queues from changed sets */ + if (*q->irq_ptr->dsci) { + + /* only clear it if the indicator is non-shared */ + if (!shared_ind(q->irq_ptr)) + xchg(q->irq_ptr->dsci, 0); + /* + * don't call inbound processing directly since + * that could starve other thinint queues + */ + tasklet_schedule(&q->tasklet); + } + + rcu_read_unlock(); + + /* + * if we used the shared indicator clear it now after all queues + * were processed + */ + if (atomic_read(&indicators[TIQDIO_SHARED_IND].count)) { + xchg(&indicators[TIQDIO_SHARED_IND].ind, 0); + + /* prevent racing */ + if (*tiqdio_alsi) + xchg(&indicators[TIQDIO_SHARED_IND].ind, 1); + } + + /* check for more work */ + if (*tiqdio_alsi) { + xchg(tiqdio_alsi, 0); + qdio_perf_stat_inc(&perf_stats.tasklet_thinint_loop); + goto again; + } +} + +/** + * tiqdio_thinint_handler - thin interrupt handler for qdio + * @ind: pointer to adapter local summary indicator + * @drv_data: NULL + */ +static void tiqdio_thinint_handler(void *ind, void *drv_data) +{ + qdio_perf_stat_inc(&perf_stats.thin_int); + + /* + * SVS only when needed: issue SVS to benefit from iqdio interrupt + * avoidance (SVS clears adapter interrupt suppression overwrite) + */ + if (!css_qdio_omit_svs) + do_clear_global_summary(); + + /* + * reset local summary indicator (tiqdio_alsi) to stop adapter + * interrupts for now, the tasklet will clean all dsci's + */ + xchg((u8 *)ind, 0); + tasklet_hi_schedule(&tiqdio_tasklet); +} + +static int set_subchannel_ind(struct qdio_irq *irq_ptr, int reset) +{ + struct scssc_area *scssc_area; + char dbf_text[15]; + void *ptr; + int rc; + + scssc_area = (struct scssc_area *)irq_ptr->chsc_page; + memset(scssc_area, 0, PAGE_SIZE); + + if (reset) { + scssc_area->summary_indicator_addr = 0; + scssc_area->subchannel_indicator_addr = 0; + } else { + scssc_area->summary_indicator_addr = virt_to_phys(tiqdio_alsi); + scssc_area->subchannel_indicator_addr = + virt_to_phys(irq_ptr->dsci); + } + + scssc_area->request = (struct chsc_header) { + .length = 0x0fe0, + .code = 0x0021, + }; + scssc_area->operation_code = 0; + scssc_area->ks = PAGE_DEFAULT_KEY; + scssc_area->kc = PAGE_DEFAULT_KEY; + scssc_area->isc = QDIO_AIRQ_ISC; + scssc_area->schid = irq_ptr->schid; + + /* enable the time delay disablement facility */ + if (css_general_characteristics.aif_tdd) + scssc_area->word_with_d_bit = 0x10000000; + + rc = chsc(scssc_area); + if (rc) + return -EIO; + + rc = chsc_error_from_response(scssc_area->response.code); + if (rc) { + sprintf(dbf_text, "sidR%4x", scssc_area->response.code); + QDIO_DBF_TEXT1(0, trace, dbf_text); + QDIO_DBF_TEXT1(0, setup, dbf_text); + ptr = &scssc_area->response; + QDIO_DBF_HEX2(1, setup, &ptr, QDIO_DBF_SETUP_LEN); + return rc; + } + + QDIO_DBF_TEXT2(0, setup, "setscind"); + QDIO_DBF_HEX2(0, setup, &scssc_area->summary_indicator_addr, + sizeof(unsigned long)); + QDIO_DBF_HEX2(0, setup, &scssc_area->subchannel_indicator_addr, + sizeof(unsigned long)); + return 0; +} + +/* allocate non-shared indicators and shared indicator */ +int __init tiqdio_allocate_memory(void) +{ + indicators = kzalloc(sizeof(struct indicator_t) * TIQDIO_NR_INDICATORS, + GFP_KERNEL); + if (!indicators) + return -ENOMEM; + return 0; +} + +void tiqdio_free_memory(void) +{ + kfree(indicators); +} + +int __init tiqdio_register_thinints(void) +{ + char dbf_text[20]; + + isc_register(QDIO_AIRQ_ISC); + tiqdio_alsi = s390_register_adapter_interrupt(&tiqdio_thinint_handler, + NULL, QDIO_AIRQ_ISC); + if (IS_ERR(tiqdio_alsi)) { + sprintf(dbf_text, "regthn%lx", PTR_ERR(tiqdio_alsi)); + QDIO_DBF_TEXT0(0, setup, dbf_text); + tiqdio_alsi = NULL; + isc_unregister(QDIO_AIRQ_ISC); + return -ENOMEM; + } + return 0; +} + +int qdio_establish_thinint(struct qdio_irq *irq_ptr) +{ + if (!is_thinint_irq(irq_ptr)) + return 0; + + /* Check for aif time delay disablement. If installed, + * omit SVS even under LPAR + */ + if (css_general_characteristics.aif_tdd) + css_qdio_omit_svs = 1; + return set_subchannel_ind(irq_ptr, 0); +} + +void qdio_setup_thinint(struct qdio_irq *irq_ptr) +{ + if (!is_thinint_irq(irq_ptr)) + return; + irq_ptr->dsci = get_indicator(); + QDIO_DBF_HEX1(0, setup, &irq_ptr->dsci, sizeof(void *)); +} + +void qdio_shutdown_thinint(struct qdio_irq *irq_ptr) +{ + if (!is_thinint_irq(irq_ptr)) + return; + + /* reset adapter interrupt indicators */ + put_indicator(irq_ptr->dsci); + set_subchannel_ind(irq_ptr, 1); +} + +void __exit tiqdio_unregister_thinints(void) +{ + tasklet_disable(&tiqdio_tasklet); + + if (tiqdio_alsi) { + s390_unregister_adapter_interrupt(tiqdio_alsi, QDIO_AIRQ_ISC); + isc_unregister(QDIO_AIRQ_ISC); + } +} Index: quilt-2.6/include/asm-s390/qdio.h =================================================================== --- quilt-2.6.orig/include/asm-s390/qdio.h +++ quilt-2.6/include/asm-s390/qdio.h @@ -1,404 +1,382 @@ /* * linux/include/asm-s390/qdio.h * - * Linux for S/390 QDIO base support, Hipersocket base support - * version 2 - * - * Copyright 2000,2002 IBM Corporation + * Copyright 2000,2008 IBM Corp. * Author(s): Utz Bacher + * Jan Glauber * */ #ifndef __QDIO_H__ #define __QDIO_H__ -/* note, that most of the typedef's are from ingo. */ - #include #include #include -#define QDIO_NAME "qdio " - -#ifndef __s390x__ -#define QDIO_32_BIT -#endif /* __s390x__ */ - -/**** CONSTANTS, that are relied on without using these symbols *****/ -#define QDIO_MAX_QUEUES_PER_IRQ 32 /* used in width of unsigned int */ -/************************ END of CONSTANTS **************************/ -#define QDIO_MAX_BUFFERS_PER_Q 128 /* must be a power of 2 (%x=&(x-1)*/ -#define QDIO_BUF_ORDER 7 /* 2**this == number of pages used for sbals in 1 q */ -#define QDIO_MAX_ELEMENTS_PER_BUFFER 16 -#define SBAL_SIZE 256 - -#define QDIO_QETH_QFMT 0 -#define QDIO_ZFCP_QFMT 1 -#define QDIO_IQDIO_QFMT 2 -#define QDIO_IQDIO_QFMT_ASYNCH 3 - -struct qdio_buffer_element{ - unsigned int flags; - unsigned int length; -#ifdef QDIO_32_BIT - void *reserved; -#endif /* QDIO_32_BIT */ - void *addr; -} __attribute__ ((packed,aligned(16))); - -struct qdio_buffer{ - volatile struct qdio_buffer_element element[16]; -} __attribute__ ((packed,aligned(256))); - - -/* params are: ccw_device, status, qdio_error, siga_error, - queue_number, first element processed, number of elements processed, - int_parm */ -typedef void qdio_handler_t(struct ccw_device *,unsigned int,unsigned int, - unsigned int,unsigned int,int,int,unsigned long); - - -#define QDIO_STATUS_INBOUND_INT 0x01 -#define QDIO_STATUS_OUTBOUND_INT 0x02 -#define QDIO_STATUS_LOOK_FOR_ERROR 0x04 -#define QDIO_STATUS_MORE_THAN_ONE_QDIO_ERROR 0x08 -#define QDIO_STATUS_MORE_THAN_ONE_SIGA_ERROR 0x10 -#define QDIO_STATUS_ACTIVATE_CHECK_CONDITION 0x20 - -#define QDIO_SIGA_ERROR_ACCESS_EXCEPTION 0x10 -#define QDIO_SIGA_ERROR_B_BIT_SET 0x20 - -/* for qdio_initialize */ -#define QDIO_INBOUND_0COPY_SBALS 0x01 -#define QDIO_OUTBOUND_0COPY_SBALS 0x02 -#define QDIO_USE_OUTBOUND_PCIS 0x04 - -/* for qdio_cleanup */ -#define QDIO_FLAG_CLEANUP_USING_CLEAR 0x01 -#define QDIO_FLAG_CLEANUP_USING_HALT 0x02 - -struct qdio_initialize { - struct ccw_device *cdev; - unsigned char q_format; - unsigned char adapter_name[8]; - unsigned int qib_param_field_format; /*adapter dependent*/ - /* pointer to 128 bytes or NULL, if no param field */ - unsigned char *qib_param_field; /* adapter dependent */ - /* pointer to no_queues*128 words of data or NULL */ - unsigned long *input_slib_elements; - unsigned long *output_slib_elements; - unsigned int min_input_threshold; - unsigned int max_input_threshold; - unsigned int min_output_threshold; - unsigned int max_output_threshold; - unsigned int no_input_qs; - unsigned int no_output_qs; - qdio_handler_t *input_handler; - qdio_handler_t *output_handler; - unsigned long int_parm; - unsigned long flags; - void **input_sbal_addr_array; /* addr of n*128 void ptrs */ - void **output_sbal_addr_array; /* addr of n*128 void ptrs */ -}; - -extern int qdio_initialize(struct qdio_initialize *init_data); -extern int qdio_allocate(struct qdio_initialize *init_data); -extern int qdio_establish(struct qdio_initialize *init_data); - -extern int qdio_activate(struct ccw_device *,int flags); - -#define QDIO_STATE_MUST_USE_OUTB_PCI 0x00000001 -#define QDIO_STATE_INACTIVE 0x00000002 /* after qdio_cleanup */ -#define QDIO_STATE_ESTABLISHED 0x00000004 /* after qdio_initialize */ -#define QDIO_STATE_ACTIVE 0x00000008 /* after qdio_activate */ -#define QDIO_STATE_STOPPED 0x00000010 /* after queues went down */ -extern unsigned long qdio_get_status(int irq); - - -#define QDIO_FLAG_SYNC_INPUT 0x01 -#define QDIO_FLAG_SYNC_OUTPUT 0x02 -#define QDIO_FLAG_UNDER_INTERRUPT 0x04 -#define QDIO_FLAG_NO_INPUT_INTERRUPT_CONTEXT 0x08 /* no effect on - adapter interrupts */ -#define QDIO_FLAG_DONT_SIGA 0x10 -#define QDIO_FLAG_PCI_OUT 0x20 - -extern int do_QDIO(struct ccw_device*, unsigned int flags, - unsigned int queue_number, - unsigned int qidx,unsigned int count, - struct qdio_buffer *buffers); - -extern int qdio_get_ssqd_pct(struct ccw_device*); -extern int qdio_synchronize(struct ccw_device*, unsigned int flags, - unsigned int queue_number); - -extern int qdio_cleanup(struct ccw_device*, int how); -extern int qdio_shutdown(struct ccw_device*, int how); -extern int qdio_free(struct ccw_device*); - -unsigned char qdio_get_slsb_state(struct ccw_device*, unsigned int flag, - unsigned int queue_number, - unsigned int qidx); - -extern void qdio_init_scrubber(void); - +#define QDIO_MAX_QUEUES_PER_IRQ 32 +#define QDIO_MAX_BUFFERS_PER_Q 128 +#define QDIO_MAX_BUFFERS_MASK (QDIO_MAX_BUFFERS_PER_Q - 1) +#define QDIO_MAX_ELEMENTS_PER_BUFFER 16 +#define QDIO_SBAL_SIZE 256 + +#define QDIO_QETH_QFMT 0 +#define QDIO_ZFCP_QFMT 1 +#define QDIO_IQDIO_QFMT 2 + +/** + * struct qdesfmt0 - queue descriptor, format 0 + * @sliba: storage list information block address + * @sla: storage list address + * @slsba: storage list state block address + * @akey: access key for DLIB + * @bkey: access key for SL + * @ckey: access key for SBALs + * @dkey: access key for SLSB + */ struct qdesfmt0 { -#ifdef QDIO_32_BIT - unsigned long res1; /* reserved */ -#endif /* QDIO_32_BIT */ - unsigned long sliba; /* storage-list-information-block - address */ -#ifdef QDIO_32_BIT - unsigned long res2; /* reserved */ -#endif /* QDIO_32_BIT */ - unsigned long sla; /* storage-list address */ -#ifdef QDIO_32_BIT - unsigned long res3; /* reserved */ -#endif /* QDIO_32_BIT */ - unsigned long slsba; /* storage-list-state-block address */ - unsigned int res4; /* reserved */ - unsigned int akey : 4; /* access key for DLIB */ - unsigned int bkey : 4; /* access key for SL */ - unsigned int ckey : 4; /* access key for SBALs */ - unsigned int dkey : 4; /* access key for SLSB */ - unsigned int res5 : 16; /* reserved */ + u64 sliba; + u64 sla; + u64 slsba; + u32 : 32; + u32 akey : 4; + u32 bkey : 4; + u32 ckey : 4; + u32 dkey : 4; + u32 : 16; } __attribute__ ((packed)); -/* - * Queue-Description record (QDR) +/** + * struct qdr - queue description record (QDR) + * @qfmt: queue format + * @pfmt: implementation dependent parameter format + * @ac: adapter characteristics + * @iqdcnt: input queue descriptor count + * @oqdcnt: output queue descriptor count + * @iqdsz: inpout queue descriptor size + * @oqdsz: output queue descriptor size + * @qiba: queue information block address + * @qkey: queue information block key + * @qdf0: queue descriptions */ struct qdr { - unsigned int qfmt : 8; /* queue format */ - unsigned int pfmt : 8; /* impl. dep. parameter format */ - unsigned int res1 : 8; /* reserved */ - unsigned int ac : 8; /* adapter characteristics */ - unsigned int res2 : 8; /* reserved */ - unsigned int iqdcnt : 8; /* input-queue-descriptor count */ - unsigned int res3 : 8; /* reserved */ - unsigned int oqdcnt : 8; /* output-queue-descriptor count */ - unsigned int res4 : 8; /* reserved */ - unsigned int iqdsz : 8; /* input-queue-descriptor size */ - unsigned int res5 : 8; /* reserved */ - unsigned int oqdsz : 8; /* output-queue-descriptor size */ - unsigned int res6[9]; /* reserved */ -#ifdef QDIO_32_BIT - unsigned long res7; /* reserved */ -#endif /* QDIO_32_BIT */ - unsigned long qiba; /* queue-information-block address */ - unsigned int res8; /* reserved */ - unsigned int qkey : 4; /* queue-information-block key */ - unsigned int res9 : 28; /* reserved */ -/* union _qd {*/ /* why this? */ - struct qdesfmt0 qdf0[126]; -/* } qd;*/ -} __attribute__ ((packed,aligned(4096))); - + u32 qfmt : 8; + u32 pfmt : 8; + u32 : 8; + u32 ac : 8; + u32 : 8; + u32 iqdcnt : 8; + u32 : 8; + u32 oqdcnt : 8; + u32 : 8; + u32 iqdsz : 8; + u32 : 8; + u32 oqdsz : 8; + /* private: */ + u32 res[9]; + /* public: */ + u64 qiba; + u32 : 32; + u32 qkey : 4; + u32 : 28; + struct qdesfmt0 qdf0[126]; +} __attribute__ ((packed, aligned(4096))); -/* - * queue information block (QIB) - */ -#define QIB_AC_INBOUND_PCI_SUPPORTED 0x80 -#define QIB_AC_OUTBOUND_PCI_SUPPORTED 0x40 +#define QIB_AC_OUTBOUND_PCI_SUPPORTED 0x40 #define QIB_RFLAGS_ENABLE_QEBSM 0x80 +/** + * struct qib - queue information block (QIB) + * @qfmt: queue format + * @pfmt: implementation dependent parameter format + * @rflags: QEBSM + * @ac: adapter characteristics + * @isliba: absolute address of first input SLIB + * @osliba: absolute address of first output SLIB + * @ebcnam: adapter identifier in EBCDIC + * @parm: implementation dependent parameters + */ struct qib { - unsigned int qfmt : 8; /* queue format */ - unsigned int pfmt : 8; /* impl. dep. parameter format */ - unsigned int rflags : 8; /* QEBSM */ - unsigned int ac : 8; /* adapter characteristics */ - unsigned int res2; /* reserved */ -#ifdef QDIO_32_BIT - unsigned long res3; /* reserved */ -#endif /* QDIO_32_BIT */ - unsigned long isliba; /* absolute address of 1st - input SLIB */ -#ifdef QDIO_32_BIT - unsigned long res4; /* reserved */ -#endif /* QDIO_32_BIT */ - unsigned long osliba; /* absolute address of 1st - output SLIB */ - unsigned int res5; /* reserved */ - unsigned int res6; /* reserved */ - unsigned char ebcnam[8]; /* adapter identifier in EBCDIC */ - unsigned char res7[88]; /* reserved */ - unsigned char parm[QDIO_MAX_BUFFERS_PER_Q]; - /* implementation dependent - parameters */ -} __attribute__ ((packed,aligned(256))); - - -/* - * storage-list-information block element (SLIBE) + u32 qfmt : 8; + u32 pfmt : 8; + u32 rflags : 8; + u32 ac : 8; + u32 : 32; + u64 isliba; + u64 osliba; + u32 : 32; + u32 : 32; + u8 ebcnam[8]; + /* private: */ + u8 res[88]; + /* public: */ + u8 parm[QDIO_MAX_BUFFERS_PER_Q]; +} __attribute__ ((packed, aligned(256))); + +/** + * struct slibe - storage list information block element (SLIBE) + * @parms: implementation dependent parameters */ struct slibe { -#ifdef QDIO_32_BIT - unsigned long res; /* reserved */ -#endif /* QDIO_32_BIT */ - unsigned long parms; /* implementation dependent - parameters */ + u64 parms; }; -/* - * storage-list-information block (SLIB) +/** + * struct slib - storage list information block (SLIB) + * @nsliba: next SLIB address (if any) + * @sla: SL address + * @slsba: SLSB address + * @slibe: SLIB elements */ struct slib { -#ifdef QDIO_32_BIT - unsigned long res1; /* reserved */ -#endif /* QDIO_32_BIT */ - unsigned long nsliba; /* next SLIB address (if any) */ -#ifdef QDIO_32_BIT - unsigned long res2; /* reserved */ -#endif /* QDIO_32_BIT */ - unsigned long sla; /* SL address */ -#ifdef QDIO_32_BIT - unsigned long res3; /* reserved */ -#endif /* QDIO_32_BIT */ - unsigned long slsba; /* SLSB address */ - unsigned char res4[1000]; /* reserved */ - struct slibe slibe[QDIO_MAX_BUFFERS_PER_Q]; /* SLIB elements */ -} __attribute__ ((packed,aligned(2048))); - + u64 nsliba; + u64 sla; + u64 slsba; + /* private: */ + u8 res[1000]; + /* public: */ + struct slibe slibe[QDIO_MAX_BUFFERS_PER_Q]; +} __attribute__ ((packed, aligned(2048))); + +/** + * struct sbal_flags - storage block address list flags + * @last: last entry + * @cont: contiguous storage + * @frag: fragmentation + */ struct sbal_flags { - unsigned char res1 : 1; /* reserved */ - unsigned char last : 1; /* last entry */ - unsigned char cont : 1; /* contiguous storage */ - unsigned char res2 : 1; /* reserved */ - unsigned char frag : 2; /* fragmentation (s.below) */ - unsigned char res3 : 2; /* reserved */ + u8 : 1; + u8 last : 1; + u8 cont : 1; + u8 : 1; + u8 frag : 2; + u8 : 2; } __attribute__ ((packed)); -#define SBAL_FLAGS_FIRST_FRAG 0x04000000UL -#define SBAL_FLAGS_MIDDLE_FRAG 0x08000000UL -#define SBAL_FLAGS_LAST_FRAG 0x0c000000UL -#define SBAL_FLAGS_LAST_ENTRY 0x40000000UL -#define SBAL_FLAGS_CONTIGUOUS 0x20000000UL +#define SBAL_FLAGS_FIRST_FRAG 0x04000000UL +#define SBAL_FLAGS_MIDDLE_FRAG 0x08000000UL +#define SBAL_FLAGS_LAST_FRAG 0x0c000000UL +#define SBAL_FLAGS_LAST_ENTRY 0x40000000UL +#define SBAL_FLAGS_CONTIGUOUS 0x20000000UL -#define SBAL_FLAGS0_DATA_CONTINUATION 0x20UL +#define SBAL_FLAGS0_DATA_CONTINUATION 0x20UL /* Awesome OpenFCP extensions */ -#define SBAL_FLAGS0_TYPE_STATUS 0x00UL -#define SBAL_FLAGS0_TYPE_WRITE 0x08UL -#define SBAL_FLAGS0_TYPE_READ 0x10UL -#define SBAL_FLAGS0_TYPE_WRITE_READ 0x18UL -#define SBAL_FLAGS0_MORE_SBALS 0x04UL -#define SBAL_FLAGS0_COMMAND 0x02UL -#define SBAL_FLAGS0_LAST_SBAL 0x00UL -#define SBAL_FLAGS0_ONLY_SBAL SBAL_FLAGS0_COMMAND -#define SBAL_FLAGS0_MIDDLE_SBAL SBAL_FLAGS0_MORE_SBALS -#define SBAL_FLAGS0_FIRST_SBAL SBAL_FLAGS0_MORE_SBALS | SBAL_FLAGS0_COMMAND -/* Naught of interest beyond this point */ - -#define SBAL_FLAGS0_PCI 0x40 +#define SBAL_FLAGS0_TYPE_STATUS 0x00UL +#define SBAL_FLAGS0_TYPE_WRITE 0x08UL +#define SBAL_FLAGS0_TYPE_READ 0x10UL +#define SBAL_FLAGS0_TYPE_WRITE_READ 0x18UL +#define SBAL_FLAGS0_MORE_SBALS 0x04UL +#define SBAL_FLAGS0_COMMAND 0x02UL +#define SBAL_FLAGS0_LAST_SBAL 0x00UL +#define SBAL_FLAGS0_ONLY_SBAL SBAL_FLAGS0_COMMAND +#define SBAL_FLAGS0_MIDDLE_SBAL SBAL_FLAGS0_MORE_SBALS +#define SBAL_FLAGS0_FIRST_SBAL SBAL_FLAGS0_MORE_SBALS | SBAL_FLAGS0_COMMAND +#define SBAL_FLAGS0_PCI 0x40 + +/** + * struct sbal_sbalf_0 - sbal flags for sbale 0 + * @pci: PCI indicator + * @cont: data continuation + * @sbtype: storage-block type (FCP) + */ struct sbal_sbalf_0 { - unsigned char res1 : 1; /* reserved */ - unsigned char pci : 1; /* PCI indicator */ - unsigned char cont : 1; /* data continuation */ - unsigned char sbtype: 2; /* storage-block type (OpenFCP) */ - unsigned char res2 : 3; /* reserved */ + u8 : 1; + u8 pci : 1; + u8 cont : 1; + u8 sbtype : 2; + u8 : 3; } __attribute__ ((packed)); +/** + * struct sbal_sbalf_1 - sbal flags for sbale 1 + * @key: storage key + */ struct sbal_sbalf_1 { - unsigned char res1 : 4; /* reserved */ - unsigned char key : 4; /* storage key */ + u8 : 4; + u8 key : 4; } __attribute__ ((packed)); +/** + * struct sbal_sbalf_14 - sbal flags for sbale 14 + * @erridx: error index + */ struct sbal_sbalf_14 { - unsigned char res1 : 4; /* reserved */ - unsigned char erridx : 4; /* error index */ + u8 : 4; + u8 erridx : 4; } __attribute__ ((packed)); +/** + * struct sbal_sbalf_15 - sbal flags for sbale 15 + * @reason: reason for error state + */ struct sbal_sbalf_15 { - unsigned char reason; /* reserved */ + u8 reason; } __attribute__ ((packed)); +/** + * union sbal_sbalf - storage block address list flags + * @i0: sbalf0 + * @i1: sbalf1 + * @i14: sbalf14 + * @i15: sblaf15 + * @value: raw value + */ union sbal_sbalf { struct sbal_sbalf_0 i0; struct sbal_sbalf_1 i1; struct sbal_sbalf_14 i14; struct sbal_sbalf_15 i15; - unsigned char value; + u8 value; }; -struct sbal_element { - union { - struct sbal_flags bits; /* flags */ - unsigned char value; - } flags; - unsigned int res1 : 16; /* reserved */ - union sbal_sbalf sbalf; /* SBAL flags */ - unsigned int res2 : 16; /* reserved */ - unsigned int count : 16; /* data count */ -#ifdef QDIO_32_BIT - unsigned long res3; /* reserved */ -#endif /* QDIO_32_BIT */ - unsigned long addr; /* absolute data address */ -} __attribute__ ((packed,aligned(16))); +/** + * struct qdio_buffer_element - SBAL entry + * @flags: flags + * @length: length + * @addr: address +*/ +struct qdio_buffer_element { + u32 flags; + u32 length; +#ifdef CONFIG_32BIT + /* private: */ + void *reserved; + /* public: */ +#endif + void *addr; +} __attribute__ ((packed, aligned(16))); -/* - * strorage-block access-list (SBAL) +/** + * struct qdio_buffer - storage block address list (SBAL) + * @element: SBAL entries */ -struct sbal { - struct sbal_element element[QDIO_MAX_ELEMENTS_PER_BUFFER]; -} __attribute__ ((packed,aligned(256))); - -/* - * storage-list (SL) +struct qdio_buffer { + struct qdio_buffer_element element[QDIO_MAX_ELEMENTS_PER_BUFFER]; +} __attribute__ ((packed, aligned(256))); + +/** + * struct sl_element - storage list entry + * @sbal: absolute SBAL address */ struct sl_element { -#ifdef QDIO_32_BIT - unsigned long res; /* reserved */ -#endif /* QDIO_32_BIT */ - unsigned long sbal; /* absolute SBAL address */ +#ifdef CONFIG_32BIT + /* private: */ + unsigned long reserved; + /* public: */ +#endif + unsigned long sbal; } __attribute__ ((packed)); +/** + * struct sl - storage list (SL) + * @element: SL entries + */ struct sl { struct sl_element element[QDIO_MAX_BUFFERS_PER_Q]; -} __attribute__ ((packed,aligned(1024))); +} __attribute__ ((packed, aligned(1024))); -/* - * storage-list-state block (SLSB) +/** + * struct slsb - storage list state block (SLSB) + * @val: state per buffer */ -struct slsb_flags { - unsigned char owner : 2; /* SBAL owner */ - unsigned char type : 1; /* buffer type */ - unsigned char state : 5; /* processing state */ +struct slsb { + u8 val[QDIO_MAX_BUFFERS_PER_Q]; +} __attribute__ ((packed, aligned(256))); + +struct qdio_ssqd_desc { + u8 flags; + u8:8; + u16 sch; + u8 qfmt; + u8 parm; + u8 qdioac1; + u8 sch_class; + u8 pcnt; + u8 icnt; + u8:8; + u8 ocnt; + u8:8; + u8 mbccnt; + u16 qdioac2; + u64 sch_token; + u64:64; } __attribute__ ((packed)); +/* params are: ccw_device, qdio_error, queue_number, + first element processed, number of elements processed, int_parm */ +typedef void qdio_handler_t(struct ccw_device *, unsigned int, int, + int, int, unsigned long); + +/* qdio errors reported to the upper-layer program */ +#define QDIO_ERROR_SIGA_ACCESS_EXCEPTION 0x10 +#define QDIO_ERROR_SIGA_BUSY 0x20 +#define QDIO_ERROR_ACTIVATE_CHECK_CONDITION 0x40 +#define QDIO_ERROR_SLSB_STATE 0x80 -struct slsb { - union { - unsigned char val[QDIO_MAX_BUFFERS_PER_Q]; - struct slsb_flags flags[QDIO_MAX_BUFFERS_PER_Q]; - } acc; -} __attribute__ ((packed,aligned(256))); +/* for qdio_initialize */ +#define QDIO_INBOUND_0COPY_SBALS 0x01 +#define QDIO_OUTBOUND_0COPY_SBALS 0x02 +#define QDIO_USE_OUTBOUND_PCIS 0x04 -/* - * SLSB values +/* for qdio_cleanup */ +#define QDIO_FLAG_CLEANUP_USING_CLEAR 0x01 +#define QDIO_FLAG_CLEANUP_USING_HALT 0x02 + +/** + * struct qdio_initialize - qdio initalization data + * @cdev: associated ccw device + * @q_format: queue format + * @adapter_name: name for the adapter + * @qib_param_field_format: format for qib_parm_field + * @qib_param_field: pointer to 128 bytes or NULL, if no param field + * @input_slib_elements: pointer to no_input_qs * 128 words of data or NULL + * @output_slib_elements: pointer to no_output_qs * 128 words of data or NULL + * @no_input_qs: number of input queues + * @no_output_qs: number of output queues + * @input_handler: handler to be called for input queues + * @output_handler: handler to be called for output queues + * @int_parm: interruption parameter + * @flags: initialization flags + * @input_sbal_addr_array: address of no_input_qs * 128 pointers + * @output_sbal_addr_array: address of no_output_qs * 128 pointers */ -#define SLSB_OWNER_PROG 1 -#define SLSB_OWNER_CU 2 +struct qdio_initialize { + struct ccw_device *cdev; + unsigned char q_format; + unsigned char adapter_name[8]; + unsigned int qib_param_field_format; + unsigned char *qib_param_field; + unsigned long *input_slib_elements; + unsigned long *output_slib_elements; + unsigned int no_input_qs; + unsigned int no_output_qs; + qdio_handler_t *input_handler; + qdio_handler_t *output_handler; + unsigned long int_parm; + unsigned long flags; + void **input_sbal_addr_array; + void **output_sbal_addr_array; +}; -#define SLSB_TYPE_INPUT 0 -#define SLSB_TYPE_OUTPUT 1 +#define QDIO_STATE_INACTIVE 0x00000002 /* after qdio_cleanup */ +#define QDIO_STATE_ESTABLISHED 0x00000004 /* after qdio_establish */ +#define QDIO_STATE_ACTIVE 0x00000008 /* after qdio_activate */ +#define QDIO_STATE_STOPPED 0x00000010 /* after queues went down */ + +#define QDIO_FLAG_SYNC_INPUT 0x01 +#define QDIO_FLAG_SYNC_OUTPUT 0x02 +#define QDIO_FLAG_PCI_OUT 0x10 -#define SLSB_STATE_NOT_INIT 0 -#define SLSB_STATE_EMPTY 1 -#define SLSB_STATE_PRIMED 2 -#define SLSB_STATE_HALTED 0xe -#define SLSB_STATE_ERROR 0xf - -#define SLSB_P_INPUT_NOT_INIT 0x80 -#define SLSB_P_INPUT_PROCESSING 0x81 -#define SLSB_CU_INPUT_EMPTY 0x41 -#define SLSB_P_INPUT_PRIMED 0x82 -#define SLSB_P_INPUT_HALTED 0x8E -#define SLSB_P_INPUT_ERROR 0x8F - -#define SLSB_P_OUTPUT_NOT_INIT 0xA0 -#define SLSB_P_OUTPUT_EMPTY 0xA1 -#define SLSB_CU_OUTPUT_PRIMED 0x62 -#define SLSB_P_OUTPUT_HALTED 0xAE -#define SLSB_P_OUTPUT_ERROR 0xAF +extern int qdio_initialize(struct qdio_initialize *init_data); +extern int qdio_allocate(struct qdio_initialize *init_data); +extern int qdio_establish(struct qdio_initialize *init_data); +extern int qdio_activate(struct ccw_device *); -#define SLSB_ERROR_DURING_LOOKUP 0xFF +extern int do_QDIO(struct ccw_device*, unsigned int flags, + int q_nr, int qidx, int count); +extern int qdio_cleanup(struct ccw_device*, int how); +extern int qdio_shutdown(struct ccw_device*, int how); +extern int qdio_free(struct ccw_device *); +extern struct qdio_ssqd_desc *qdio_get_ssqd_desc(struct ccw_device *cdev); #endif /* __QDIO_H__ */ -- blue skies, Martin. "Reality continues to ruin my life." - Calvin. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/