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-rw-r--r--drivers/s390/cio/airq.c167
-rw-r--r--drivers/s390/cio/chp.c36
-rw-r--r--drivers/s390/cio/chsc.c60
-rw-r--r--drivers/s390/cio/chsc.h48
-rw-r--r--drivers/s390/cio/chsc_sch.c155
-rw-r--r--drivers/s390/cio/cio.c68
-rw-r--r--drivers/s390/cio/qdio.h34
-rw-r--r--drivers/s390/cio/qdio_main.c44
-rw-r--r--drivers/s390/cio/qdio_setup.c47
-rw-r--r--drivers/s390/cio/qdio_thinint.c79
10 files changed, 419 insertions, 319 deletions
diff --git a/drivers/s390/cio/airq.c b/drivers/s390/cio/airq.c
index bc10220f684..91edbd7ee80 100644
--- a/drivers/s390/cio/airq.c
+++ b/drivers/s390/cio/airq.c
@@ -9,142 +9,87 @@
*/
#include <linux/init.h>
+#include <linux/irq.h>
+#include <linux/kernel_stat.h>
#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/rculist.h>
#include <linux/slab.h>
-#include <linux/rcupdate.h>
#include <asm/airq.h>
#include <asm/isc.h>
#include "cio.h"
#include "cio_debug.h"
+#include "ioasm.h"
-#define NR_AIRQS 32
-#define NR_AIRQS_PER_WORD sizeof(unsigned long)
-#define NR_AIRQ_WORDS (NR_AIRQS / NR_AIRQS_PER_WORD)
-
-union indicator_t {
- unsigned long word[NR_AIRQ_WORDS];
- unsigned char byte[NR_AIRQS];
-} __attribute__((packed));
-
-struct airq_t {
- adapter_int_handler_t handler;
- void *drv_data;
-};
-
-static union indicator_t indicators[MAX_ISC+1];
-static struct airq_t *airqs[MAX_ISC+1][NR_AIRQS];
-
-static int register_airq(struct airq_t *airq, u8 isc)
-{
- int i;
-
- for (i = 0; i < NR_AIRQS; i++)
- if (!cmpxchg(&airqs[isc][i], NULL, airq))
- return i;
- return -ENOMEM;
-}
+static DEFINE_SPINLOCK(airq_lists_lock);
+static struct hlist_head airq_lists[MAX_ISC+1];
/**
- * s390_register_adapter_interrupt() - register adapter interrupt handler
- * @handler: adapter handler to be registered
- * @drv_data: driver data passed with each call to the handler
- * @isc: isc for which the handler should be called
+ * register_adapter_interrupt() - register adapter interrupt handler
+ * @airq: pointer to adapter interrupt descriptor
*
- * Returns:
- * Pointer to the indicator to be used on success
- * ERR_PTR() if registration failed
+ * Returns 0 on success, or -EINVAL.
*/
-void *s390_register_adapter_interrupt(adapter_int_handler_t handler,
- void *drv_data, u8 isc)
+int register_adapter_interrupt(struct airq_struct *airq)
{
- struct airq_t *airq;
- char dbf_txt[16];
- int ret;
-
- if (isc > MAX_ISC)
- return ERR_PTR(-EINVAL);
- airq = kmalloc(sizeof(struct airq_t), GFP_KERNEL);
- if (!airq) {
- ret = -ENOMEM;
- goto out;
+ char dbf_txt[32];
+
+ if (!airq->handler || airq->isc > MAX_ISC)
+ return -EINVAL;
+ if (!airq->lsi_ptr) {
+ airq->lsi_ptr = kzalloc(1, GFP_KERNEL);
+ if (!airq->lsi_ptr)
+ return -ENOMEM;
+ airq->flags |= AIRQ_PTR_ALLOCATED;
}
- airq->handler = handler;
- airq->drv_data = drv_data;
-
- ret = register_airq(airq, isc);
-out:
- snprintf(dbf_txt, sizeof(dbf_txt), "rairq:%d", ret);
+ if (!airq->lsi_mask)
+ airq->lsi_mask = 0xff;
+ snprintf(dbf_txt, sizeof(dbf_txt), "rairq:%p", airq);
CIO_TRACE_EVENT(4, dbf_txt);
- if (ret < 0) {
- kfree(airq);
- return ERR_PTR(ret);
- } else
- return &indicators[isc].byte[ret];
+ isc_register(airq->isc);
+ spin_lock(&airq_lists_lock);
+ hlist_add_head_rcu(&airq->list, &airq_lists[airq->isc]);
+ spin_unlock(&airq_lists_lock);
+ return 0;
}
-EXPORT_SYMBOL(s390_register_adapter_interrupt);
+EXPORT_SYMBOL(register_adapter_interrupt);
/**
- * s390_unregister_adapter_interrupt - unregister adapter interrupt handler
- * @ind: indicator for which the handler is to be unregistered
- * @isc: interruption subclass
+ * unregister_adapter_interrupt - unregister adapter interrupt handler
+ * @airq: pointer to adapter interrupt descriptor
*/
-void s390_unregister_adapter_interrupt(void *ind, u8 isc)
+void unregister_adapter_interrupt(struct airq_struct *airq)
{
- struct airq_t *airq;
- char dbf_txt[16];
- int i;
+ char dbf_txt[32];
- i = (int) ((addr_t) ind) - ((addr_t) &indicators[isc].byte[0]);
- snprintf(dbf_txt, sizeof(dbf_txt), "urairq:%d", i);
+ if (hlist_unhashed(&airq->list))
+ return;
+ snprintf(dbf_txt, sizeof(dbf_txt), "urairq:%p", airq);
CIO_TRACE_EVENT(4, dbf_txt);
- indicators[isc].byte[i] = 0;
- airq = xchg(&airqs[isc][i], NULL);
- /*
- * Allow interrupts to complete. This will ensure that the airq handle
- * is no longer referenced by any interrupt handler.
- */
- synchronize_sched();
- kfree(airq);
+ spin_lock(&airq_lists_lock);
+ hlist_del_rcu(&airq->list);
+ spin_unlock(&airq_lists_lock);
+ synchronize_rcu();
+ isc_unregister(airq->isc);
+ if (airq->flags & AIRQ_PTR_ALLOCATED) {
+ kfree(airq->lsi_ptr);
+ airq->lsi_ptr = NULL;
+ airq->flags &= ~AIRQ_PTR_ALLOCATED;
+ }
}
-EXPORT_SYMBOL(s390_unregister_adapter_interrupt);
-
-#define INDICATOR_MASK (0xffUL << ((NR_AIRQS_PER_WORD - 1) * 8))
+EXPORT_SYMBOL(unregister_adapter_interrupt);
void do_adapter_IO(u8 isc)
{
- int w;
- int i;
- unsigned long word;
- struct airq_t *airq;
-
- /*
- * Access indicator array in word-sized chunks to minimize storage
- * fetch operations.
- */
- for (w = 0; w < NR_AIRQ_WORDS; w++) {
- word = indicators[isc].word[w];
- i = w * NR_AIRQS_PER_WORD;
- /*
- * Check bytes within word for active indicators.
- */
- while (word) {
- if (word & INDICATOR_MASK) {
- airq = airqs[isc][i];
- /* Make sure gcc reads from airqs only once. */
- barrier();
- if (likely(airq))
- airq->handler(&indicators[isc].byte[i],
- airq->drv_data);
- else
- /*
- * Reset ill-behaved indicator.
- */
- indicators[isc].byte[i] = 0;
- }
- word <<= 8;
- i++;
- }
- }
+ struct airq_struct *airq;
+ struct hlist_head *head;
+
+ head = &airq_lists[isc];
+ rcu_read_lock();
+ hlist_for_each_entry_rcu(airq, head, list)
+ if ((*airq->lsi_ptr & airq->lsi_mask) != 0)
+ airq->handler(airq);
+ rcu_read_unlock();
}
diff --git a/drivers/s390/cio/chp.c b/drivers/s390/cio/chp.c
index 21fabc6d5a9..6c440d4349d 100644
--- a/drivers/s390/cio/chp.c
+++ b/drivers/s390/cio/chp.c
@@ -352,12 +352,48 @@ static ssize_t chp_shared_show(struct device *dev,
static DEVICE_ATTR(shared, 0444, chp_shared_show, NULL);
+static ssize_t chp_chid_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct channel_path *chp = to_channelpath(dev);
+ ssize_t rc;
+
+ mutex_lock(&chp->lock);
+ if (chp->desc_fmt1.flags & 0x10)
+ rc = sprintf(buf, "%04x\n", chp->desc_fmt1.chid);
+ else
+ rc = 0;
+ mutex_unlock(&chp->lock);
+
+ return rc;
+}
+static DEVICE_ATTR(chid, 0444, chp_chid_show, NULL);
+
+static ssize_t chp_chid_external_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct channel_path *chp = to_channelpath(dev);
+ ssize_t rc;
+
+ mutex_lock(&chp->lock);
+ if (chp->desc_fmt1.flags & 0x10)
+ rc = sprintf(buf, "%x\n", chp->desc_fmt1.flags & 0x8 ? 1 : 0);
+ else
+ rc = 0;
+ mutex_unlock(&chp->lock);
+
+ return rc;
+}
+static DEVICE_ATTR(chid_external, 0444, chp_chid_external_show, NULL);
+
static struct attribute *chp_attrs[] = {
&dev_attr_status.attr,
&dev_attr_configure.attr,
&dev_attr_type.attr,
&dev_attr_cmg.attr,
&dev_attr_shared.attr,
+ &dev_attr_chid.attr,
+ &dev_attr_chid_external.attr,
NULL,
};
static struct attribute_group chp_attr_group = {
diff --git a/drivers/s390/cio/chsc.c b/drivers/s390/cio/chsc.c
index 8ea7d9b2c67..13299f90267 100644
--- a/drivers/s390/cio/chsc.c
+++ b/drivers/s390/cio/chsc.c
@@ -20,6 +20,7 @@
#include <asm/chpid.h>
#include <asm/chsc.h>
#include <asm/crw.h>
+#include <asm/isc.h>
#include "css.h"
#include "cio.h"
@@ -144,6 +145,65 @@ out:
return ret;
}
+/**
+ * chsc_ssqd() - store subchannel QDIO data (SSQD)
+ * @schid: id of the subchannel on which SSQD is performed
+ * @ssqd: request and response block for SSQD
+ *
+ * Returns 0 on success.
+ */
+int chsc_ssqd(struct subchannel_id schid, struct chsc_ssqd_area *ssqd)
+{
+ memset(ssqd, 0, sizeof(*ssqd));
+ ssqd->request.length = 0x0010;
+ ssqd->request.code = 0x0024;
+ ssqd->first_sch = schid.sch_no;
+ ssqd->last_sch = schid.sch_no;
+ ssqd->ssid = schid.ssid;
+
+ if (chsc(ssqd))
+ return -EIO;
+
+ return chsc_error_from_response(ssqd->response.code);
+}
+EXPORT_SYMBOL_GPL(chsc_ssqd);
+
+/**
+ * chsc_sadc() - set adapter device controls (SADC)
+ * @schid: id of the subchannel on which SADC is performed
+ * @scssc: request and response block for SADC
+ * @summary_indicator_addr: summary indicator address
+ * @subchannel_indicator_addr: subchannel indicator address
+ *
+ * Returns 0 on success.
+ */
+int chsc_sadc(struct subchannel_id schid, struct chsc_scssc_area *scssc,
+ u64 summary_indicator_addr, u64 subchannel_indicator_addr)
+{
+ memset(scssc, 0, sizeof(*scssc));
+ scssc->request.length = 0x0fe0;
+ scssc->request.code = 0x0021;
+ scssc->operation_code = 0;
+
+ scssc->summary_indicator_addr = summary_indicator_addr;
+ scssc->subchannel_indicator_addr = subchannel_indicator_addr;
+
+ scssc->ks = PAGE_DEFAULT_KEY >> 4;
+ scssc->kc = PAGE_DEFAULT_KEY >> 4;
+ scssc->isc = QDIO_AIRQ_ISC;
+ scssc->schid = schid;
+
+ /* enable the time delay disablement facility */
+ if (css_general_characteristics.aif_tdd)
+ scssc->word_with_d_bit = 0x10000000;
+
+ if (chsc(scssc))
+ return -EIO;
+
+ return chsc_error_from_response(scssc->response.code);
+}
+EXPORT_SYMBOL_GPL(chsc_sadc);
+
static int s390_subchannel_remove_chpid(struct subchannel *sch, void *data)
{
spin_lock_irq(sch->lock);
diff --git a/drivers/s390/cio/chsc.h b/drivers/s390/cio/chsc.h
index 349d5fc4719..23d072e70eb 100644
--- a/drivers/s390/cio/chsc.h
+++ b/drivers/s390/cio/chsc.h
@@ -7,14 +7,10 @@
#include <asm/chpid.h>
#include <asm/chsc.h>
#include <asm/schid.h>
+#include <asm/qdio.h>
#define CHSC_SDA_OC_MSS 0x2
-struct chsc_header {
- u16 length;
- u16 code;
-} __attribute__ ((packed));
-
#define NR_MEASUREMENT_CHARS 5
struct cmg_chars {
u32 values[NR_MEASUREMENT_CHARS];
@@ -43,7 +39,9 @@ struct channel_path_desc_fmt1 {
u8 chpid;
u32:24;
u8 chpp;
- u32 unused[3];
+ u32 unused[2];
+ u16 chid;
+ u32:16;
u16 mdc;
u16:13;
u8 r:1;
@@ -75,6 +73,40 @@ struct chsc_ssd_info {
u16 fla[8];
};
+struct chsc_ssqd_area {
+ struct chsc_header request;
+ u16:10;
+ u8 ssid:2;
+ u8 fmt:4;
+ u16 first_sch;
+ u16:16;
+ u16 last_sch;
+ u32:32;
+ struct chsc_header response;
+ u32:32;
+ struct qdio_ssqd_desc qdio_ssqd;
+} __packed;
+
+struct chsc_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;
+} __packed;
+
struct chsc_scpd {
struct chsc_header request;
u32:2;
@@ -114,7 +146,9 @@ int chsc_determine_fmt1_channel_path_desc(struct chp_id chpid,
void chsc_chp_online(struct chp_id chpid);
void chsc_chp_offline(struct chp_id chpid);
int chsc_get_channel_measurement_chars(struct channel_path *chp);
-
+int chsc_ssqd(struct subchannel_id schid, struct chsc_ssqd_area *ssqd);
+int chsc_sadc(struct subchannel_id schid, struct chsc_scssc_area *scssc,
+ u64 summary_indicator_addr, u64 subchannel_indicator_addr);
int chsc_error_from_response(int response);
int chsc_siosl(struct subchannel_id schid);
diff --git a/drivers/s390/cio/chsc_sch.c b/drivers/s390/cio/chsc_sch.c
index facdf809113..7b29d0be0ca 100644
--- a/drivers/s390/cio/chsc_sch.c
+++ b/drivers/s390/cio/chsc_sch.c
@@ -29,6 +29,10 @@
static debug_info_t *chsc_debug_msg_id;
static debug_info_t *chsc_debug_log_id;
+static struct chsc_request *on_close_request;
+static struct chsc_async_area *on_close_chsc_area;
+static DEFINE_MUTEX(on_close_mutex);
+
#define CHSC_MSG(imp, args...) do { \
debug_sprintf_event(chsc_debug_msg_id, imp , ##args); \
} while (0)
@@ -258,7 +262,7 @@ static int chsc_async(struct chsc_async_area *chsc_area,
CHSC_LOG(2, "schid");
CHSC_LOG_HEX(2, &sch->schid, sizeof(sch->schid));
cc = chsc(chsc_area);
- sprintf(dbf, "cc:%d", cc);
+ snprintf(dbf, sizeof(dbf), "cc:%d", cc);
CHSC_LOG(2, dbf);
switch (cc) {
case 0:
@@ -287,11 +291,11 @@ static int chsc_async(struct chsc_async_area *chsc_area,
return ret;
}
-static void chsc_log_command(struct chsc_async_area *chsc_area)
+static void chsc_log_command(void *chsc_area)
{
char dbf[10];
- sprintf(dbf, "CHSC:%x", chsc_area->header.code);
+ snprintf(dbf, sizeof(dbf), "CHSC:%x", ((uint16_t *)chsc_area)[1]);
CHSC_LOG(0, dbf);
CHSC_LOG_HEX(0, chsc_area, 32);
}
@@ -355,13 +359,106 @@ static int chsc_ioctl_start(void __user *user_area)
if (copy_to_user(user_area, chsc_area, PAGE_SIZE))
ret = -EFAULT;
out_free:
- sprintf(dbf, "ret:%d", ret);
+ snprintf(dbf, sizeof(dbf), "ret:%d", ret);
CHSC_LOG(0, dbf);
kfree(request);
free_page((unsigned long)chsc_area);
return ret;
}
+static int chsc_ioctl_on_close_set(void __user *user_area)
+{
+ char dbf[13];
+ int ret;
+
+ mutex_lock(&on_close_mutex);
+ if (on_close_chsc_area) {
+ ret = -EBUSY;
+ goto out_unlock;
+ }
+ on_close_request = kzalloc(sizeof(*on_close_request), GFP_KERNEL);
+ if (!on_close_request) {
+ ret = -ENOMEM;
+ goto out_unlock;
+ }
+ on_close_chsc_area = (void *)get_zeroed_page(GFP_DMA | GFP_KERNEL);
+ if (!on_close_chsc_area) {
+ ret = -ENOMEM;
+ goto out_free_request;
+ }
+ if (copy_from_user(on_close_chsc_area, user_area, PAGE_SIZE)) {
+ ret = -EFAULT;
+ goto out_free_chsc;
+ }
+ ret = 0;
+ goto out_unlock;
+
+out_free_chsc:
+ free_page((unsigned long)on_close_chsc_area);
+ on_close_chsc_area = NULL;
+out_free_request:
+ kfree(on_close_request);
+ on_close_request = NULL;
+out_unlock:
+ mutex_unlock(&on_close_mutex);
+ snprintf(dbf, sizeof(dbf), "ocsret:%d", ret);
+ CHSC_LOG(0, dbf);
+ return ret;
+}
+
+static int chsc_ioctl_on_close_remove(void)
+{
+ char dbf[13];
+ int ret;
+
+ mutex_lock(&on_close_mutex);
+ if (!on_close_chsc_area) {
+ ret = -ENOENT;
+ goto out_unlock;
+ }
+ free_page((unsigned long)on_close_chsc_area);
+ on_close_chsc_area = NULL;
+ kfree(on_close_request);
+ on_close_request = NULL;
+ ret = 0;
+out_unlock:
+ mutex_unlock(&on_close_mutex);
+ snprintf(dbf, sizeof(dbf), "ocrret:%d", ret);
+ CHSC_LOG(0, dbf);
+ return ret;
+}
+
+static int chsc_ioctl_start_sync(void __user *user_area)
+{
+ struct chsc_sync_area *chsc_area;
+ int ret, ccode;
+
+ chsc_area = (void *)get_zeroed_page(GFP_KERNEL | GFP_DMA);
+ if (!chsc_area)
+ return -ENOMEM;
+ if (copy_from_user(chsc_area, user_area, PAGE_SIZE)) {
+ ret = -EFAULT;
+ goto out_free;
+ }
+ if (chsc_area->header.code & 0x4000) {
+ ret = -EINVAL;
+ goto out_free;
+ }
+ chsc_log_command(chsc_area);
+ ccode = chsc(chsc_area);
+ if (ccode != 0) {
+ ret = -EIO;
+ goto out_free;
+ }
+ if (copy_to_user(user_area, chsc_area, PAGE_SIZE))
+ ret = -EFAULT;
+ else
+ ret = 0;
+out_free:
+ free_page((unsigned long)chsc_area);
+ return ret;
+}
+
static int chsc_ioctl_info_channel_path(void __user *user_cd)
{
struct chsc_chp_cd *cd;
@@ -795,6 +892,8 @@ static long chsc_ioctl(struct file *filp, unsigned int cmd,
switch (cmd) {
case CHSC_START:
return chsc_ioctl_start(argp);
+ case CHSC_START_SYNC:
+ return chsc_ioctl_start_sync(argp);
case CHSC_INFO_CHANNEL_PATH:
return chsc_ioctl_info_channel_path(argp);
case CHSC_INFO_CU:
@@ -809,14 +908,60 @@ static long chsc_ioctl(struct file *filp, unsigned int cmd,
return chsc_ioctl_chpd(argp);
case CHSC_INFO_DCAL:
return chsc_ioctl_dcal(argp);
+ case CHSC_ON_CLOSE_SET:
+ return chsc_ioctl_on_close_set(argp);
+ case CHSC_ON_CLOSE_REMOVE:
+ return chsc_ioctl_on_close_remove();
default: /* unknown ioctl number */
return -ENOIOCTLCMD;
}
}
+static atomic_t chsc_ready_for_use = ATOMIC_INIT(1);
+
+static int chsc_open(struct inode *inode, struct file *file)
+{
+ if (!atomic_dec_and_test(&chsc_ready_for_use)) {
+ atomic_inc(&chsc_ready_for_use);
+ return -EBUSY;
+ }
+ return nonseekable_open(inode, file);
+}
+
+static int chsc_release(struct inode *inode, struct file *filp)
+{
+ char dbf[13];
+ int ret;
+
+ mutex_lock(&on_close_mutex);
+ if (!on_close_chsc_area)
+ goto out_unlock;
+ init_completion(&on_close_request->completion);
+ CHSC_LOG(0, "on_close");
+ chsc_log_command(on_close_chsc_area);
+ spin_lock_irq(&chsc_lock);
+ ret = chsc_async(on_close_chsc_area, on_close_request);
+ spin_unlock_irq(&chsc_lock);
+ if (ret == -EINPROGRESS) {
+ wait_for_completion(&on_close_request->completion);
+ ret = chsc_examine_irb(on_close_request);
+ }
+ snprintf(dbf, sizeof(dbf), "relret:%d", ret);
+ CHSC_LOG(0, dbf);
+ free_page((unsigned long)on_close_chsc_area);
+ on_close_chsc_area = NULL;
+ kfree(on_close_request);
+ on_close_request = NULL;
+out_unlock:
+ mutex_unlock(&on_close_mutex);
+ atomic_inc(&chsc_ready_for_use);
+ return 0;
+}
+
static const struct file_operations chsc_fops = {
.owner = THIS_MODULE,
- .open = nonseekable_open,
+ .open = chsc_open,
+ .release = chsc_release,
.unlocked_ioctl = chsc_ioctl,
.compat_ioctl = chsc_ioctl,
.llseek = no_llseek,
diff --git a/drivers/s390/cio/cio.c b/drivers/s390/cio/cio.c
index 935d80b4e9c..4eeb4a6bf20 100644
--- a/drivers/s390/cio/cio.c
+++ b/drivers/s390/cio/cio.c
@@ -568,7 +568,7 @@ out:
*/
void __irq_entry do_IRQ(struct pt_regs *regs)
{
- struct tpi_info *tpi_info;
+ struct tpi_info *tpi_info = (struct tpi_info *) &regs->int_code;
struct subchannel *sch;
struct irb *irb;
struct pt_regs *old_regs;
@@ -579,46 +579,34 @@ void __irq_entry do_IRQ(struct pt_regs *regs)
if (S390_lowcore.int_clock >= S390_lowcore.clock_comparator)
/* Serve timer interrupts first. */
clock_comparator_work();
- /*
- * Get interrupt information from lowcore
- */
- tpi_info = (struct tpi_info *)&S390_lowcore.subchannel_id;
- irb = (struct irb *)&S390_lowcore.irb;
- do {
- kstat_incr_irqs_this_cpu(IO_INTERRUPT, NULL);
- if (tpi_info->adapter_IO) {
- do_adapter_IO(tpi_info->isc);
- continue;
- }
- sch = (struct subchannel *)(unsigned long)tpi_info->intparm;
- if (!sch) {
- /* Clear pending interrupt condition. */
- inc_irq_stat(IRQIO_CIO);
- tsch(tpi_info->schid, irb);
- continue;
- }
- spin_lock(sch->lock);
- /* Store interrupt response block to lowcore. */
- if (tsch(tpi_info->schid, irb) == 0) {
- /* Keep subchannel information word up to date. */
- memcpy (&sch->schib.scsw, &irb->scsw,
- sizeof (irb->scsw));
- /* Call interrupt handler if there is one. */
- if (sch->driver && sch->driver->irq)
- sch->driver->irq(sch);
- else
- inc_irq_stat(IRQIO_CIO);
- } else
+
+ kstat_incr_irqs_this_cpu(IO_INTERRUPT, NULL);
+ irb = (struct irb *) &S390_lowcore.irb;
+ if (tpi_info->adapter_IO) {
+ do_adapter_IO(tpi_info->isc);
+ goto out;
+ }
+ sch = (struct subchannel *)(unsigned long) tpi_info->intparm;
+ if (!sch) {
+ /* Clear pending interrupt condition. */
+ inc_irq_stat(IRQIO_CIO);
+ tsch(tpi_info->schid, irb);
+ goto out;
+ }
+ spin_lock(sch->lock);
+ /* Store interrupt response block to lowcore. */
+ if (tsch(tpi_info->schid, irb) == 0) {
+ /* Keep subchannel information word up to date. */
+ memcpy (&sch->schib.scsw, &irb->scsw, sizeof (irb->scsw));
+ /* Call interrupt handler if there is one. */
+ if (sch->driver && sch->driver->irq)
+ sch->driver->irq(sch);
+ else
inc_irq_stat(IRQIO_CIO);
- spin_unlock(sch->lock);
- /*
- * Are more interrupts pending?
- * If so, the tpi instruction will update the lowcore
- * to hold the info for the next interrupt.
- * We don't do this for VM because a tpi drops the cpu
- * out of the sie which costs more cycles than it saves.
- */
- } while (MACHINE_IS_LPAR && tpi(NULL) != 0);
+ } else
+ inc_irq_stat(IRQIO_CIO);
+ spin_unlock(sch->lock);
+out:
irq_exit();
set_irq_regs(old_regs);
}
diff --git a/drivers/s390/cio/qdio.h b/drivers/s390/cio/qdio.h
index 5132554d791..8acaae18bd1 100644
--- a/drivers/s390/cio/qdio.h
+++ b/drivers/s390/cio/qdio.h
@@ -140,40 +140,6 @@ struct siga_flag {
u8:3;
} __attribute__ ((packed));
-struct chsc_ssqd_area {
- struct chsc_header request;
- u16:10;
- u8 ssid:2;
- u8 fmt:4;
- u16 first_sch;
- u16:16;
- u16 last_sch;
- u32:32;
- struct chsc_header response;
- u32:32;
- struct qdio_ssqd_desc qdio_ssqd;
-} __attribute__ ((packed));
-
-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));
-
struct qdio_dev_perf_stat {
unsigned int adapter_int;
unsigned int qdio_int;
diff --git a/drivers/s390/cio/qdio_main.c b/drivers/s390/cio/qdio_main.c
index 843051bc20f..fb1c1e0483e 100644
--- a/drivers/s390/cio/qdio_main.c
+++ b/drivers/s390/cio/qdio_main.c
@@ -608,50 +608,6 @@ 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;
diff --git a/drivers/s390/cio/qdio_setup.c b/drivers/s390/cio/qdio_setup.c
index 16ecd35b8e5..f5f4a91fab4 100644
--- a/drivers/s390/cio/qdio_setup.c
+++ b/drivers/s390/cio/qdio_setup.c
@@ -254,40 +254,31 @@ int qdio_setup_get_ssqd(struct qdio_irq *irq_ptr,
int rc;
DBF_EVENT("getssqd:%4x", schid->sch_no);
- if (irq_ptr != NULL)
- ssqd = (struct chsc_ssqd_area *)irq_ptr->chsc_page;
- else
+ if (!irq_ptr) {
ssqd = (struct chsc_ssqd_area *)__get_free_page(GFP_KERNEL);
- memset(ssqd, 0, PAGE_SIZE);
-
- ssqd->request = (struct chsc_header) {
- .length = 0x0010,
- .code = 0x0024,
- };
- ssqd->first_sch = schid->sch_no;
- ssqd->last_sch = schid->sch_no;
- ssqd->ssid = schid->ssid;
-
- if (chsc(ssqd))
- return -EIO;
- rc = chsc_error_from_response(ssqd->response.code);
+ if (!ssqd)
+ return -ENOMEM;
+ } else {
+ ssqd = (struct chsc_ssqd_area *)irq_ptr->chsc_page;
+ }
+
+ rc = chsc_ssqd(*schid, ssqd);
if (rc)
- return rc;
+ goto out;
if (!(ssqd->qdio_ssqd.flags & CHSC_FLAG_QDIO_CAPABILITY) ||
!(ssqd->qdio_ssqd.flags & CHSC_FLAG_VALIDITY) ||
(ssqd->qdio_ssqd.sch != schid->sch_no))
- return -EINVAL;
-
- if (irq_ptr != NULL)
- memcpy(&irq_ptr->ssqd_desc, &ssqd->qdio_ssqd,
- sizeof(struct qdio_ssqd_desc));
- else {
- memcpy(data, &ssqd->qdio_ssqd,
- sizeof(struct qdio_ssqd_desc));
+ rc = -EINVAL;
+
+ if (!rc)
+ memcpy(data, &ssqd->qdio_ssqd, sizeof(*data));
+
+out:
+ if (!irq_ptr)
free_page((unsigned long)ssqd);
- }
- return 0;
+
+ return rc;
}
void qdio_setup_ssqd_info(struct qdio_irq *irq_ptr)
@@ -295,7 +286,7 @@ void qdio_setup_ssqd_info(struct qdio_irq *irq_ptr)
unsigned char qdioac;
int rc;
- rc = qdio_setup_get_ssqd(irq_ptr, &irq_ptr->schid, NULL);
+ rc = qdio_setup_get_ssqd(irq_ptr, &irq_ptr->schid, &irq_ptr->ssqd_desc);
if (rc) {
DBF_ERROR("%4x ssqd ERR", irq_ptr->schid.sch_no);
DBF_ERROR("rc:%x", rc);
diff --git a/drivers/s390/cio/qdio_thinint.c b/drivers/s390/cio/qdio_thinint.c
index bde5255200d..5d06253c2a7 100644
--- a/drivers/s390/cio/qdio_thinint.c
+++ b/drivers/s390/cio/qdio_thinint.c
@@ -36,8 +36,13 @@ struct indicator_t {
static LIST_HEAD(tiq_list);
static DEFINE_MUTEX(tiq_list_lock);
-/* adapter local summary indicator */
-static u8 *tiqdio_alsi;
+/* Adapter interrupt definitions */
+static void tiqdio_thinint_handler(struct airq_struct *airq);
+
+static struct airq_struct tiqdio_airq = {
+ .handler = tiqdio_thinint_handler,
+ .isc = QDIO_AIRQ_ISC,
+};
static struct indicator_t *q_indicators;
@@ -176,7 +181,7 @@ static inline void tiqdio_call_inq_handlers(struct qdio_irq *irq)
* @alsi: pointer to adapter local summary indicator
* @data: NULL
*/
-static void tiqdio_thinint_handler(void *alsi, void *data)
+static void tiqdio_thinint_handler(struct airq_struct *airq)
{
u32 si_used = clear_shared_ind();
struct qdio_q *q;
@@ -208,51 +213,31 @@ static void tiqdio_thinint_handler(void *alsi, void *data)
static int set_subchannel_ind(struct qdio_irq *irq_ptr, int reset)
{
- struct scssc_area *scssc_area;
+ struct chsc_scssc_area *scssc = (void *)irq_ptr->chsc_page;
+ u64 summary_indicator_addr, subchannel_indicator_addr;
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;
+ summary_indicator_addr = 0;
+ 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);
+ summary_indicator_addr = virt_to_phys(tiqdio_airq.lsi_ptr);
+ 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 >> 4;
- scssc_area->kc = PAGE_DEFAULT_KEY >> 4;
- 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);
+ rc = chsc_sadc(irq_ptr->schid, scssc, summary_indicator_addr,
+ subchannel_indicator_addr);
if (rc) {
DBF_ERROR("%4x SSI r:%4x", irq_ptr->schid.sch_no,
- scssc_area->response.code);
- DBF_ERROR_HEX(&scssc_area->response, sizeof(void *));
- return rc;
+ scssc->response.code);
+ goto out;
}
DBF_EVENT("setscind");
- DBF_HEX(&scssc_area->summary_indicator_addr, sizeof(unsigned long));
- DBF_HEX(&scssc_area->subchannel_indicator_addr, sizeof(unsigned long));
- return 0;
+ DBF_HEX(&summary_indicator_addr, sizeof(summary_indicator_addr));
+ DBF_HEX(&subchannel_indicator_addr, sizeof(subchannel_indicator_addr));
+out:
+ return rc;
}
/* allocate non-shared indicators and shared indicator */
@@ -272,14 +257,12 @@ void tiqdio_free_memory(void)
int __init tiqdio_register_thinints(void)
{
- isc_register(QDIO_AIRQ_ISC);
- tiqdio_alsi = s390_register_adapter_interrupt(&tiqdio_thinint_handler,
- NULL, QDIO_AIRQ_ISC);
- if (IS_ERR(tiqdio_alsi)) {
- DBF_EVENT("RTI:%lx", PTR_ERR(tiqdio_alsi));
- tiqdio_alsi = NULL;
- isc_unregister(QDIO_AIRQ_ISC);
- return -ENOMEM;
+ int rc;
+
+ rc = register_adapter_interrupt(&tiqdio_airq);
+ if (rc) {
+ DBF_EVENT("RTI:%x", rc);
+ return rc;
}
return 0;
}
@@ -312,9 +295,5 @@ void qdio_shutdown_thinint(struct qdio_irq *irq_ptr)
void __exit tiqdio_unregister_thinints(void)
{
WARN_ON(!list_empty(&tiq_list));
-
- if (tiqdio_alsi) {
- s390_unregister_adapter_interrupt(tiqdio_alsi, QDIO_AIRQ_ISC);
- isc_unregister(QDIO_AIRQ_ISC);
- }
+ unregister_adapter_interrupt(&tiqdio_airq);
}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-28 23:07:05 +0000