[ewg] [PATCH] IB/ehca: Backport for RHEL 4.6
Joachim Fenkes
fenkes at de.ibm.com
Tue Jul 15 07:27:44 PDT 2008
Also, fix atomic64_t backport on powerpc64.
Signed-off-by: Joachim Fenkes <fenkes at de.ibm.com>
---
.../2.6.9_U6/include/asm-powerpc/atomic64.h | 61 +++++++
.../backport/2.6.9_U6/include/asm/atomic.h | 4 +
.../2.6.9_U6/ehca_01_ibmebus_loc_code.patch | 186 ++++++++++++++++++++
3 files changed, 251 insertions(+), 0 deletions(-)
create mode 100644 kernel_addons/backport/2.6.9_U6/include/asm-powerpc/atomic64.h
create mode 100644 kernel_patches/backport/2.6.9_U6/ehca_01_ibmebus_loc_code.patch
diff --git a/kernel_addons/backport/2.6.9_U6/include/asm-powerpc/atomic64.h b/kernel_addons/backport/2.6.9_U6/include/asm-powerpc/atomic64.h
new file mode 100644
index 0000000..8036dbe
--- /dev/null
+++ b/kernel_addons/backport/2.6.9_U6/include/asm-powerpc/atomic64.h
@@ -0,0 +1,61 @@
+#ifndef __ATOMIC64_INC_BACKPORT_2_6_9__
+#define __ATOMIC64_INC_BACKPORT_2_6_9__
+
+typedef struct { volatile long counter; } atomic64_t;
+
+#define ATOMIC64_INIT(i) { (i) }
+
+#define atomic64_read(v) ((v)->counter)
+#define atomic64_set(v,i) (((v)->counter) = (i))
+
+static __inline__ void atomic64_add(long a, atomic64_t *v)
+{
+ long t;
+
+ __asm__ __volatile__(
+"1: ldarx %0,0,%3 # atomic64_add\n\
+ add %0,%2,%0\n\
+ stdcx. %0,0,%3 \n\
+ bne- 1b"
+: "=&r" (t), "=m" (v->counter)
+: "r" (a), "r" (&v->counter), "m" (v->counter)
+: "cc");
+}
+
+static __inline__ long atomic64_add_return(long a, atomic64_t *v)
+{
+ long t;
+
+ __asm__ __volatile__(
+#ifdef CONFIG_SMP
+" lwsync\n"
+#endif
+"1: ldarx %0,0,%2 # atomic64_add_return\n\
+ add %0,%1,%0\n\
+ stdcx. %0,0,%2 \n\
+ bne- 1b"
+#ifdef CONFIG_SMP
+" isync\n"
+#endif
+ : "=&r" (t)
+ : "r" (a), "r" (&v->counter)
+ : "cc", "memory");
+
+ return t;
+}
+
+static __inline__ void atomic64_inc(atomic64_t *v)
+{
+ long t;
+
+ __asm__ __volatile__(
+"1: ldarx %0,0,%2 # atomic64_inc\n\
+ addic %0,%0,1\n\
+ stdcx. %0,0,%2 \n\
+ bne- 1b"
+: "=&r" (t), "=m" (v->counter)
+: "r" (&v->counter), "m" (v->counter)
+: "cc");
+}
+
+#endif
diff --git a/kernel_addons/backport/2.6.9_U6/include/asm/atomic.h b/kernel_addons/backport/2.6.9_U6/include/asm/atomic.h
index 11de648..2823278 100644
--- a/kernel_addons/backport/2.6.9_U6/include/asm/atomic.h
+++ b/kernel_addons/backport/2.6.9_U6/include/asm/atomic.h
@@ -3,6 +3,10 @@
#include_next <asm/atomic.h>
+#ifdef __powerpc64__
+#include <asm-powerpc/atomic64.h>
+#endif
+
# if defined(__x86_64__)
/**
diff --git a/kernel_patches/backport/2.6.9_U6/ehca_01_ibmebus_loc_code.patch b/kernel_patches/backport/2.6.9_U6/ehca_01_ibmebus_loc_code.patch
new file mode 100644
index 0000000..8737b79
--- /dev/null
+++ b/kernel_patches/backport/2.6.9_U6/ehca_01_ibmebus_loc_code.patch
@@ -0,0 +1,186 @@
+diff --git a/drivers/infiniband/hw/ehca/ehca_classes.h b/drivers/infiniband/hw/ehca/ehca_classes.h
+index 1e9e99a..fbf6e58 100644
+--- a/drivers/infiniband/hw/ehca/ehca_classes.h
++++ b/drivers/infiniband/hw/ehca/ehca_classes.h
+@@ -112,7 +112,7 @@ struct ehca_sport {
+
+ struct ehca_shca {
+ struct ib_device ib_device;
+- struct of_device *ofdev;
++ struct ibmebus_dev *ibmebus_dev;
+ u8 num_ports;
+ int hw_level;
+ struct list_head shca_list;
+diff --git a/drivers/infiniband/hw/ehca/ehca_eq.c b/drivers/infiniband/hw/ehca/ehca_eq.c
+index 49660df..aab80e9 100644
+--- a/drivers/infiniband/hw/ehca/ehca_eq.c
++++ b/drivers/infiniband/hw/ehca/ehca_eq.c
+@@ -122,7 +122,7 @@ int ehca_create_eq(struct ehca_shca *shca,
+
+ /* register interrupt handlers and initialize work queues */
+ if (type == EHCA_EQ) {
+- ret = ibmebus_request_irq(eq->ist, ehca_interrupt_eq,
++ ret = ibmebus_request_irq(NULL, eq->ist, ehca_interrupt_eq,
+ IRQF_DISABLED, "ehca_eq",
+ (void *)shca);
+ if (ret < 0)
+@@ -130,7 +130,7 @@ int ehca_create_eq(struct ehca_shca *shca,
+
+ tasklet_init(&eq->interrupt_task, ehca_tasklet_eq, (long)shca);
+ } else if (type == EHCA_NEQ) {
+- ret = ibmebus_request_irq(eq->ist, ehca_interrupt_neq,
++ ret = ibmebus_request_irq(NULL, eq->ist, ehca_interrupt_neq,
+ IRQF_DISABLED, "ehca_neq",
+ (void *)shca);
+ if (ret < 0)
+@@ -170,7 +170,7 @@ int ehca_destroy_eq(struct ehca_shca *shca, struct ehca_eq *eq)
+ u64 h_ret;
+
+ spin_lock_irqsave(&eq->spinlock, flags);
+- ibmebus_free_irq(eq->ist, (void *)shca);
++ ibmebus_free_irq(NULL, eq->ist, (void *)shca);
+
+ h_ret = hipz_h_destroy_eq(shca->ipz_hca_handle, eq);
+
+diff --git a/drivers/infiniband/hw/ehca/ehca_main.c b/drivers/infiniband/hw/ehca/ehca_main.c
+index 482103e..666aafe 100644
+--- a/drivers/infiniband/hw/ehca/ehca_main.c
++++ b/drivers/infiniband/hw/ehca/ehca_main.c
+@@ -289,8 +289,8 @@ static int ehca_sense_attributes(struct
+ };
+
+ ehca_gen_dbg("Probing adapter %s...",
+- shca->ofdev->node->full_name);
+- loc_code = of_get_property(shca->ofdev->node, "ibm,loc-code", NULL);
++ shca->ibmebus_dev->ofdev.node->full_name);
++ loc_code = of_get_property(shca->ibmebus_dev->ofdev.node, "ibm,loc-code", NULL);
+ if (loc_code)
+ ehca_gen_dbg(" ... location lode=%s", loc_code);
+
+@@ -458,7 +458,7 @@ static int ehca_init_device(struct ehca_shca *shca)
+ shca->ib_device.node_type = RDMA_NODE_IB_CA;
+ shca->ib_device.phys_port_cnt = shca->num_ports;
+ shca->ib_device.num_comp_vectors = 1;
+- shca->ib_device.dma_device = &shca->ofdev->dev;
++ shca->ib_device.dma_device = &shca->ibmebus_dev->ofdev.dev;
+ shca->ib_device.query_device = ehca_query_device;
+ shca->ib_device.query_port = ehca_query_port;
+ shca->ib_device.query_gid = ehca_query_gid;
+@@ -619,11 +619,6 @@ static struct attribute_group ehca_drv_attr_grp = {
+ .attrs = ehca_drv_attrs
+ };
+
+-static struct attribute_group *ehca_drv_attr_groups[] = {
+- &ehca_drv_attr_grp,
+- NULL,
+-};
+-
+ #define EHCA_RESOURCE_ATTR(name) \
+ static ssize_t ehca_show_##name(struct device *dev, \
+ struct device_attribute *attr, \
+@@ -707,7 +702,7 @@ static struct attribute_group ehca_dev_attr_grp = {
+ .attrs = ehca_dev_attrs
+ };
+
+-static int __devinit ehca_probe(struct of_device *dev,
++static int __devinit ehca_probe(struct ibmebus_dev *dev,
+ const struct of_device_id *id)
+ {
+ struct ehca_shca *shca;
+@@ -715,16 +710,16 @@ static int __devinit ehca_probe(struct of_device *dev,
+ struct ib_pd *ibpd;
+ int ret, i, eq_size;
+
+- handle = of_get_property(dev->node, "ibm,hca-handle", NULL);
++ handle = of_get_property(dev->ofdev.node, "ibm,hca-handle", NULL);
+ if (!handle) {
+ ehca_gen_err("Cannot get eHCA handle for adapter: %s.",
+- dev->node->full_name);
++ dev->ofdev.node->full_name);
+ return -ENODEV;
+ }
+
+ if (!(*handle)) {
+ ehca_gen_err("Wrong eHCA handle for adapter: %s.",
+- dev->node->full_name);
++ dev->ofdev.node->full_name);
+ return -ENODEV;
+ }
+
+@@ -739,9 +734,9 @@ static int __devinit ehca_probe(struct of_device *dev,
+ for (i = 0; i < ARRAY_SIZE(shca->sport); i++)
+ spin_lock_init(&shca->sport[i].mod_sqp_lock);
+
+- shca->ofdev = dev;
++ shca->ibmebus_dev = dev;
+ shca->ipz_hca_handle.handle = *handle;
+- dev->dev.driver_data = shca;
++ dev->ofdev.dev.driver_data = shca;
+
+ ret = ehca_sense_attributes(shca);
+ if (ret < 0) {
+@@ -818,7 +813,7 @@ static int __devinit ehca_probe(struct of_device *dev,
+ }
+ }
+
+- ret = sysfs_create_group(&dev->dev.kobj, &ehca_dev_attr_grp);
++ ret = sysfs_create_group(&dev->ofdev.dev.kobj, &ehca_dev_attr_grp);
+ if (ret) /* only complain; we can live without attributes */
+ ehca_err(&shca->ib_device,
+ "Cannot create device attributes ret=%d", ret);
+@@ -868,12 +863,12 @@ probe1:
+ return -EINVAL;
+ }
+
+-static int __devexit ehca_remove(struct of_device *dev)
++static int __devexit ehca_remove(struct ibmebus_dev *dev)
+ {
+- struct ehca_shca *shca = dev->dev.driver_data;
++ struct ehca_shca *shca = dev->ofdev.dev.driver_data;
+ int ret;
+
+- sysfs_remove_group(&dev->dev.kobj, &ehca_dev_attr_grp);
++ sysfs_remove_group(&dev->ofdev.dev.kobj, &ehca_dev_attr_grp);
+
+ if (ehca_open_aqp1 == 1) {
+ int i;
+@@ -924,14 +919,11 @@ static struct of_device_id ehca_device_table[] =
+ {},
+ };
+
+-static struct of_platform_driver ehca_driver = {
+- .name = "ehca",
+- .match_table = ehca_device_table,
+- .probe = ehca_probe,
+- .remove = ehca_remove,
+- .driver = {
+- .groups = ehca_drv_attr_groups,
+- },
++static struct ibmebus_driver ehca_driver = {
++ .name = "ehca",
++ .id_table = ehca_device_table,
++ .probe = ehca_probe,
++ .remove = ehca_remove,
+ };
+
+ void ehca_poll_eqs(unsigned long data)
+@@ -990,6 +982,10 @@ static int __init ehca_module_init(void)
+ goto module_init2;
+ }
+
++ ret = sysfs_create_group(&ehca_driver.driver.kobj, &ehca_drv_attr_grp);
++ if (ret) /* only complain; we can live without attributes */
++ ehca_gen_err("Cannot create driver attributes ret=%d", ret);
++
+ if (ehca_poll_all_eqs != 1) {
+ ehca_gen_err("WARNING!!!");
+ ehca_gen_err("It is possible to lose interrupts.");
+@@ -1015,6 +1011,7 @@ static void __exit ehca_module_exit(void)
+ if (ehca_poll_all_eqs == 1)
+ del_timer_sync(&poll_eqs_timer);
+
++ sysfs_remove_group(&ehca_driver.driver.kobj, &ehca_drv_attr_grp);
+ ibmebus_unregister_driver(&ehca_driver);
+
+ ehca_destroy_slab_caches();
+
--
1.5.5
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