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Message-Id: <200703221750.24570.ossthema@de.ibm.com>
Date: Thu, 22 Mar 2007 17:50:24 +0100
From: Jan-Bernd Themann <ossthema@...ibm.com>
To: Jeff Garzik <jeff@...zik.org>
Cc: netdev <netdev@...r.kernel.org>,
Christoph Raisch <raisch@...ibm.com>,
"Jan-Bernd Themann" <themann@...ibm.com>,
"linux-kernel" <linux-kernel@...r.kernel.org>,
"linux-ppc" <linuxppc-dev@...abs.org>,
Marcus Eder <meder@...ibm.com>,
Thomas Klein <tklein@...ibm.com>,
Stefan Roscher <stefan.roscher@...ibm.com>
Subject: [PATCH 2/2] ehea: code cleanup
This patch includes:
- code cleanup related to resource management
- extended error data gathering for resource management
- removing trailing whitespaces
Signed-off-by: Jan-Bernd Themann <themann@...ibm.com>
---
This patch applies on top of the netdev upstream branch for 2.6.22
drivers/net/ehea/ehea.h | 3
drivers/net/ehea/ehea_main.c | 95 ++++++++--------------
drivers/net/ehea/ehea_phyp.c | 6 -
drivers/net/ehea/ehea_phyp.h | 6 +
drivers/net/ehea/ehea_qmr.c | 184 +++++++++++++++++++++++++++++++------------
drivers/net/ehea/ehea_qmr.h | 7 +
6 files changed, 187 insertions(+), 114 deletions(-)
diff -Nurp netdev-2.6/drivers/net/ehea/ehea.h netdev_backup/drivers/net/ehea/ehea.h
--- netdev-2.6/drivers/net/ehea/ehea.h 2007-03-22 15:37:46.000000000 +0100
+++ netdev_backup/drivers/net/ehea/ehea.h 2007-03-22 15:41:50.000000000 +0100
@@ -39,7 +39,7 @@
#include <asm/io.h>
#define DRV_NAME "ehea"
-#define DRV_VERSION "EHEA_0053"
+#define DRV_VERSION "EHEA_0054"
#define EHEA_MSG_DEFAULT (NETIF_MSG_LINK | NETIF_MSG_TIMER \
| NETIF_MSG_RX_ERR | NETIF_MSG_TX_ERR)
@@ -309,6 +309,7 @@ struct ehea_cq {
* Memory Region
*/
struct ehea_mr {
+ struct ehea_adapter *adapter;
u64 handle;
u64 vaddr;
u32 lkey;
diff -Nurp netdev-2.6/drivers/net/ehea/ehea_main.c netdev_backup/drivers/net/ehea/ehea_main.c
--- netdev-2.6/drivers/net/ehea/ehea_main.c 2007-03-22 15:37:46.000000000 +0100
+++ netdev_backup/drivers/net/ehea/ehea_main.c 2007-03-22 15:41:50.000000000 +0100
@@ -546,19 +546,19 @@ static int ehea_poll(struct net_device *
cqe = ehea_poll_rq1(pr->qp, &wqe_index);
cqe_skb = ehea_poll_cq(pr->send_cq);
- if (!cqe && !cqe_skb)
+ if (!cqe && !cqe_skb)
return 0;
- if (!netif_rx_reschedule(dev, dev->quota))
+ if (!netif_rx_reschedule(dev, dev->quota))
return 0;
}
-
+
cqe = ehea_proc_rwqes(dev, pr, budget);
cqe_skb = ehea_proc_cqes(pr, 300);
if (cqe || cqe_skb)
pr->poll_counter++;
-
+
return 1;
}
@@ -1011,7 +1011,7 @@ static int ehea_configure_port(struct eh
else
cb0->default_qpn_arr[i] =
port->port_res[0].qp->init_attr.qp_nr;
-
+
if (netif_msg_ifup(port))
ehea_dump(cb0, sizeof(*cb0), "ehea_configure_port");
@@ -1033,52 +1033,35 @@ out:
return ret;
}
-static int ehea_gen_smrs(struct ehea_port_res *pr)
+int ehea_gen_smrs(struct ehea_port_res *pr)
{
- u64 hret;
+ int ret;
struct ehea_adapter *adapter = pr->port->adapter;
- hret = ehea_h_register_smr(adapter->handle, adapter->mr.handle,
- adapter->mr.vaddr, EHEA_MR_ACC_CTRL,
- adapter->pd, &pr->send_mr);
- if (hret != H_SUCCESS)
+ ret = ehea_gen_smr(adapter, &adapter->mr, &pr->send_mr);
+ if (ret)
goto out;
- hret = ehea_h_register_smr(adapter->handle, adapter->mr.handle,
- adapter->mr.vaddr, EHEA_MR_ACC_CTRL,
- adapter->pd, &pr->recv_mr);
- if (hret != H_SUCCESS)
- goto out_freeres;
+ ret = ehea_gen_smr(adapter, &adapter->mr, &pr->recv_mr);
+ if (ret)
+ goto out_free;
return 0;
-out_freeres:
- hret = ehea_h_free_resource(adapter->handle, pr->send_mr.handle);
- if (hret != H_SUCCESS)
- ehea_error("failed freeing SMR");
+out_free:
+ ehea_rem_mr(&pr->send_mr);
out:
+ ehea_error("Generating SMRS failed\n");
return -EIO;
}
-static int ehea_rem_smrs(struct ehea_port_res *pr)
+int ehea_rem_smrs(struct ehea_port_res *pr)
{
- struct ehea_adapter *adapter = pr->port->adapter;
- int ret = 0;
- u64 hret;
-
- hret = ehea_h_free_resource(adapter->handle, pr->send_mr.handle);
- if (hret != H_SUCCESS) {
- ret = -EIO;
- ehea_error("failed freeing send SMR for pr=%p", pr);
- }
-
- hret = ehea_h_free_resource(adapter->handle, pr->recv_mr.handle);
- if (hret != H_SUCCESS) {
- ret = -EIO;
- ehea_error("failed freeing recv SMR for pr=%p", pr);
- }
-
- return ret;
+ if ((ehea_rem_mr(&pr->send_mr))
+ || (ehea_rem_mr(&pr->recv_mr)))
+ return -EIO;
+ else
+ return 0;
}
static int ehea_init_q_skba(struct ehea_q_skb_arr *q_skba, int max_q_entries)
@@ -2240,7 +2223,7 @@ static int ehea_down(struct net_device *
ehea_free_interrupts(dev);
for (i = 0; i < port->num_def_qps; i++)
- while (test_bit(__LINK_STATE_RX_SCHED,
+ while (test_bit(__LINK_STATE_RX_SCHED,
&port->port_res[i].d_netdev->state))
msleep(1);
@@ -2415,7 +2398,7 @@ static struct device *ehea_register_port
ehea_error("failed to register attributes, ret=%d", ret);
goto out_unreg_of_dev;
}
-
+
return &port->ofdev.dev;
out_unreg_of_dev:
@@ -2514,7 +2497,7 @@ struct ehea_port *ehea_setup_single_port
}
ret = ehea_get_jumboframe_status(port, &jumbo);
- if (ret)
+ if (ret)
ehea_error("failed determining jumbo frame status for %s",
port->netdev->name);
@@ -2557,7 +2540,7 @@ static int ehea_setup_ports(struct ehea_
lhea_dn = adapter->ebus_dev->ofdev.node;
while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) {
-
+
dn_log_port_id = (u32*)get_property(eth_dn, "ibm,hea-port-no",
NULL);
if (!dn_log_port_id) {
@@ -2571,7 +2554,7 @@ static int ehea_setup_ports(struct ehea_
eth_dn);
if (adapter->port[i])
ehea_info("%s -> logical port id #%d",
- adapter->port[i]->netdev->name,
+ adapter->port[i]->netdev->name,
*dn_log_port_id);
i++;
};
@@ -2587,8 +2570,8 @@ static int ehea_setup_ports(struct ehea_
return -EINVAL;
}
-static struct device_node *ehea_get_eth_dn(struct ehea_adapter *adapter,
- u32 logical_port_id)
+static struct device_node *ehea_get_eth_dn(struct ehea_adapter *adapter,
+ u32 logical_port_id)
{
struct device_node *lhea_dn;
struct device_node *eth_dn = NULL;
@@ -2596,7 +2579,7 @@ static struct device_node *ehea_get_eth_
lhea_dn = adapter->ebus_dev->ofdev.node;
while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) {
-
+
dn_log_port_id = (u32*)get_property(eth_dn, "ibm,hea-port-no",
NULL);
if (dn_log_port_id)
@@ -2628,14 +2611,14 @@ static ssize_t ehea_probe_port(struct de
port->netdev->name);
return -EINVAL;
}
-
+
eth_dn = ehea_get_eth_dn(adapter, logical_port_id);
if (!eth_dn) {
ehea_info("no logical port with id %d found", logical_port_id);
return -EINVAL;
}
-
+
port = ehea_setup_single_port(adapter, logical_port_id, eth_dn);
of_node_put(eth_dn);
@@ -2649,8 +2632,8 @@ static ssize_t ehea_probe_port(struct de
ehea_info("added %s (logical port id=%d)", port->netdev->name,
logical_port_id);
- } else
- return -EIO;
+ } else
+ return -EIO;
return (ssize_t) count;
}
@@ -2745,7 +2728,7 @@ static int __devinit ehea_probe_adapter(
dev->ofdev.dev.driver_data = adapter;
- ret = ehea_reg_mr_adapter(adapter);
+ ret = ehea_reg_kernel_mr(adapter, &adapter->mr);
if (ret) {
dev_err(&dev->ofdev.dev, "reg_mr_adapter failed\n");
goto out_free_ad;
@@ -2810,7 +2793,7 @@ out_kill_eq:
ehea_destroy_eq(adapter->neq);
out_free_res:
- ehea_h_free_resource(adapter->handle, adapter->mr.handle);
+ ehea_rem_mr(&adapter->mr);
out_free_ad:
kfree(adapter);
@@ -2821,7 +2804,6 @@ out:
static int __devexit ehea_remove(struct ibmebus_dev *dev)
{
struct ehea_adapter *adapter = dev->ofdev.dev.driver_data;
- u64 hret;
int i;
for (i = 0; i < EHEA_MAX_PORTS; i++)
@@ -2838,12 +2820,7 @@ static int __devexit ehea_remove(struct
tasklet_kill(&adapter->neq_tasklet);
ehea_destroy_eq(adapter->neq);
-
- hret = ehea_h_free_resource(adapter->handle, adapter->mr.handle);
- if (hret) {
- dev_err(&dev->ofdev.dev, "free_resource_mr failed");
- return -EIO;
- }
+ ehea_rem_mr(&adapter->mr);
kfree(adapter);
return 0;
}
diff -Nurp netdev-2.6/drivers/net/ehea/ehea_phyp.c netdev_backup/drivers/net/ehea/ehea_phyp.c
--- netdev-2.6/drivers/net/ehea/ehea_phyp.c 2007-03-22 14:07:32.000000000 +0100
+++ netdev_backup/drivers/net/ehea/ehea_phyp.c 2007-03-22 15:41:50.000000000 +0100
@@ -478,12 +478,14 @@ u64 ehea_h_disable_and_get_hea(const u64
0, 0, 0, 0, 0, 0); /* R7-R12 */
}
-u64 ehea_h_free_resource(const u64 adapter_handle, const u64 res_handle)
+u64 ehea_h_free_resource(const u64 adapter_handle, const u64 res_handle,
+ u64 force_bit)
{
return ehea_plpar_hcall_norets(H_FREE_RESOURCE,
adapter_handle, /* R4 */
res_handle, /* R5 */
- 0, 0, 0, 0, 0); /* R6-R10 */
+ force_bit,
+ 0, 0, 0, 0); /* R7-R10 */
}
u64 ehea_h_alloc_resource_mr(const u64 adapter_handle, const u64 vaddr,
diff -Nurp netdev-2.6/drivers/net/ehea/ehea_phyp.h netdev_backup/drivers/net/ehea/ehea_phyp.h
--- netdev-2.6/drivers/net/ehea/ehea_phyp.h 2007-03-22 14:07:32.000000000 +0100
+++ netdev_backup/drivers/net/ehea/ehea_phyp.h 2007-03-22 15:41:50.000000000 +0100
@@ -414,7 +414,11 @@ u64 ehea_h_register_rpage(const u64 adap
u64 ehea_h_disable_and_get_hea(const u64 adapter_handle, const u64 qp_handle);
-u64 ehea_h_free_resource(const u64 adapter_handle, const u64 res_handle);
+#define FORCE_FREE 1
+#define NORMAL_FREE 0
+
+u64 ehea_h_free_resource(const u64 adapter_handle, const u64 res_handle,
+ u64 force_bit);
u64 ehea_h_alloc_resource_mr(const u64 adapter_handle, const u64 vaddr,
const u64 length, const u32 access_ctrl,
diff -Nurp netdev-2.6/drivers/net/ehea/ehea_qmr.c netdev_backup/drivers/net/ehea/ehea_qmr.c
--- netdev-2.6/drivers/net/ehea/ehea_qmr.c 2007-03-22 14:07:32.000000000 +0100
+++ netdev_backup/drivers/net/ehea/ehea_qmr.c 2007-03-22 15:41:50.000000000 +0100
@@ -197,7 +197,7 @@ out_kill_hwq:
hw_queue_dtor(&cq->hw_queue);
out_freeres:
- ehea_h_free_resource(adapter->handle, cq->fw_handle);
+ ehea_h_free_resource(adapter->handle, cq->fw_handle, FORCE_FREE);
out_freemem:
kfree(cq);
@@ -206,25 +206,38 @@ out_nomem:
return NULL;
}
-int ehea_destroy_cq(struct ehea_cq *cq)
+u64 ehea_destroy_cq_res(struct ehea_cq *cq, u64 force)
{
- u64 adapter_handle, hret;
+ u64 hret;
+ u64 adapter_handle = cq->adapter->handle;
+
+ /* deregister all previous registered pages */
+ hret = ehea_h_free_resource(adapter_handle, cq->fw_handle, force);
+ if (hret != H_SUCCESS)
+ return hret;
+
+ hw_queue_dtor(&cq->hw_queue);
+ kfree(cq);
+
+ return hret;
+}
+int ehea_destroy_cq(struct ehea_cq *cq)
+{
+ u64 hret;
if (!cq)
return 0;
- adapter_handle = cq->adapter->handle;
+ if ((hret = ehea_destroy_cq_res(cq, NORMAL_FREE)) == H_R_STATE) {
+ ehea_error_data(cq->adapter, cq->fw_handle);
+ hret = ehea_destroy_cq_res(cq, FORCE_FREE);
+ }
- /* deregister all previous registered pages */
- hret = ehea_h_free_resource(adapter_handle, cq->fw_handle);
if (hret != H_SUCCESS) {
ehea_error("destroy CQ failed");
return -EIO;
}
- hw_queue_dtor(&cq->hw_queue);
- kfree(cq);
-
return 0;
}
@@ -297,7 +310,7 @@ out_kill_hwq:
hw_queue_dtor(&eq->hw_queue);
out_freeres:
- ehea_h_free_resource(adapter->handle, eq->fw_handle);
+ ehea_h_free_resource(adapter->handle, eq->fw_handle, FORCE_FREE);
out_freemem:
kfree(eq);
@@ -316,27 +329,41 @@ struct ehea_eqe *ehea_poll_eq(struct ehe
return eqe;
}
-int ehea_destroy_eq(struct ehea_eq *eq)
+u64 ehea_destroy_eq_res(struct ehea_eq *eq, u64 force)
{
u64 hret;
unsigned long flags;
- if (!eq)
- return 0;
-
spin_lock_irqsave(&eq->spinlock, flags);
- hret = ehea_h_free_resource(eq->adapter->handle, eq->fw_handle);
+ hret = ehea_h_free_resource(eq->adapter->handle, eq->fw_handle, force);
spin_unlock_irqrestore(&eq->spinlock, flags);
- if (hret != H_SUCCESS) {
- ehea_error("destroy_eq failed");
- return -EIO;
- }
+ if (hret != H_SUCCESS)
+ return hret;
hw_queue_dtor(&eq->hw_queue);
kfree(eq);
+ return hret;
+}
+
+int ehea_destroy_eq(struct ehea_eq *eq)
+{
+ u64 hret;
+ if (!eq)
+ return 0;
+
+ if ((hret = ehea_destroy_eq_res(eq, NORMAL_FREE)) == H_R_STATE) {
+ ehea_error_data(eq->adapter, eq->fw_handle);
+ hret = ehea_destroy_eq_res(eq, FORCE_FREE);
+ }
+
+ if (hret != H_SUCCESS) {
+ ehea_error("destroy EQ failed");
+ return -EIO;
+ }
+
return 0;
}
@@ -471,41 +498,56 @@ out_kill_hwsq:
out_freeres:
ehea_h_disable_and_get_hea(adapter->handle, qp->fw_handle);
- ehea_h_free_resource(adapter->handle, qp->fw_handle);
+ ehea_h_free_resource(adapter->handle, qp->fw_handle, FORCE_FREE);
out_freemem:
kfree(qp);
return NULL;
}
-int ehea_destroy_qp(struct ehea_qp *qp)
+u64 ehea_destroy_qp_res(struct ehea_qp *qp, u64 force)
{
- u64 hret;
- struct ehea_qp_init_attr *qp_attr = &qp->init_attr;
+ u64 hret;
+ struct ehea_qp_init_attr *qp_attr = &qp->init_attr;
- if (!qp)
- return 0;
- ehea_h_disable_and_get_hea(qp->adapter->handle, qp->fw_handle);
- hret = ehea_h_free_resource(qp->adapter->handle, qp->fw_handle);
- if (hret != H_SUCCESS) {
- ehea_error("destroy_qp failed");
- return -EIO;
- }
+ ehea_h_disable_and_get_hea(qp->adapter->handle, qp->fw_handle);
+ hret = ehea_h_free_resource(qp->adapter->handle, qp->fw_handle, force);
+ if (hret != H_SUCCESS)
+ return hret;
- hw_queue_dtor(&qp->hw_squeue);
- hw_queue_dtor(&qp->hw_rqueue1);
+ hw_queue_dtor(&qp->hw_squeue);
+ hw_queue_dtor(&qp->hw_rqueue1);
- if (qp_attr->rq_count > 1)
- hw_queue_dtor(&qp->hw_rqueue2);
- if (qp_attr->rq_count > 2)
- hw_queue_dtor(&qp->hw_rqueue3);
- kfree(qp);
+ if (qp_attr->rq_count > 1)
+ hw_queue_dtor(&qp->hw_rqueue2);
+ if (qp_attr->rq_count > 2)
+ hw_queue_dtor(&qp->hw_rqueue3);
+ kfree(qp);
- return 0;
+ return hret;
}
-int ehea_reg_mr_adapter(struct ehea_adapter *adapter)
+int ehea_destroy_qp(struct ehea_qp *qp)
+{
+ u64 hret;
+ if (!qp)
+ return 0;
+
+ if ((hret = ehea_destroy_qp_res(qp, NORMAL_FREE)) == H_R_STATE) {
+ ehea_error_data(qp->adapter, qp->fw_handle);
+ hret = ehea_destroy_qp_res(qp, FORCE_FREE);
+ }
+
+ if (hret != H_SUCCESS) {
+ ehea_error("destroy QP failed");
+ return -EIO;
+ }
+
+ return 0;
+}
+
+int ehea_reg_kernel_mr(struct ehea_adapter *adapter, struct ehea_mr *mr)
{
int i, k, ret;
u64 hret, pt_abs, start, end, nr_pages;
@@ -526,14 +568,14 @@ int ehea_reg_mr_adapter(struct ehea_adap
hret = ehea_h_alloc_resource_mr(adapter->handle, start, end - start,
acc_ctrl, adapter->pd,
- &adapter->mr.handle, &adapter->mr.lkey);
+ &mr->handle, &mr->lkey);
if (hret != H_SUCCESS) {
ehea_error("alloc_resource_mr failed");
ret = -EIO;
goto out;
}
- adapter->mr.vaddr = KERNELBASE;
+ mr->vaddr = KERNELBASE;
k = 0;
while (nr_pages > 0) {
@@ -545,7 +587,7 @@ int ehea_reg_mr_adapter(struct ehea_adap
EHEA_PAGESIZE)));
hret = ehea_h_register_rpage_mr(adapter->handle,
- adapter->mr.handle, 0,
+ mr->handle, 0,
0, (u64)pt_abs,
num_pages);
nr_pages -= num_pages;
@@ -554,34 +596,68 @@ int ehea_reg_mr_adapter(struct ehea_adap
(k * EHEA_PAGESIZE)));
hret = ehea_h_register_rpage_mr(adapter->handle,
- adapter->mr.handle, 0,
+ mr->handle, 0,
0, abs_adr,1);
nr_pages--;
}
if ((hret != H_SUCCESS) && (hret != H_PAGE_REGISTERED)) {
ehea_h_free_resource(adapter->handle,
- adapter->mr.handle);
- ehea_error("register_rpage_mr failed: hret = %lX",
- hret);
+ mr->handle, FORCE_FREE);
+ ehea_error("register_rpage_mr failed");
ret = -EIO;
goto out;
}
}
if (hret != H_SUCCESS) {
- ehea_h_free_resource(adapter->handle, adapter->mr.handle);
- ehea_error("register_rpage failed for last page: hret = %lX",
- hret);
+ ehea_h_free_resource(adapter->handle, mr->handle,
+ FORCE_FREE);
+ ehea_error("register_rpage failed for last page");
ret = -EIO;
goto out;
}
+
+ mr->adapter = adapter;
ret = 0;
out:
kfree(pt);
return ret;
}
+int ehea_rem_mr(struct ehea_mr *mr)
+{
+ u64 hret;
+
+ if (!mr || !mr->adapter)
+ return -EINVAL;
+
+ hret = ehea_h_free_resource(mr->adapter->handle, mr->handle,
+ FORCE_FREE);
+ if (hret != H_SUCCESS) {
+ ehea_error("destroy MR failed");
+ return -EIO;
+ }
+
+ return 0;
+}
+
+int ehea_gen_smr(struct ehea_adapter *adapter, struct ehea_mr *old_mr,
+ struct ehea_mr *shared_mr)
+{
+ u64 hret;
+
+ hret = ehea_h_register_smr(adapter->handle, old_mr->handle,
+ old_mr->vaddr, EHEA_MR_ACC_CTRL,
+ adapter->pd, shared_mr);
+ if (hret != H_SUCCESS)
+ return -EIO;
+
+ shared_mr->adapter = adapter;
+
+ return 0;
+}
+
void print_error_data(u64 *data)
{
int length;
@@ -597,6 +673,14 @@ void print_error_data(u64 *data)
ehea_error("QP (resource=%lX) state: AER=0x%lX, AERR=0x%lX, "
"port=%lX", resource, data[6], data[12], data[22]);
+ if (type == 0x4) /* Completion Queue */
+ ehea_error("CQ (resource=%lX) state: AER=0x%lX", resource,
+ data[6]);
+
+ if (type == 0x3) /* Event Queue */
+ ehea_error("EQ (resource=%lX) state: AER=0x%lX", resource,
+ data[6]);
+
ehea_dump(data, length, "error data");
}
diff -Nurp netdev-2.6/drivers/net/ehea/ehea_qmr.h netdev_backup/drivers/net/ehea/ehea_qmr.h
--- netdev-2.6/drivers/net/ehea/ehea_qmr.h 2007-03-22 14:09:39.000000000 +0100
+++ netdev_backup/drivers/net/ehea/ehea_qmr.h 2007-03-22 15:41:50.000000000 +0100
@@ -361,7 +361,12 @@ struct ehea_qp *ehea_create_qp(struct eh
int ehea_destroy_qp(struct ehea_qp *qp);
-int ehea_reg_mr_adapter(struct ehea_adapter *adapter);
+int ehea_reg_kernel_mr(struct ehea_adapter *adapter, struct ehea_mr *mr);
+
+int ehea_gen_smr(struct ehea_adapter *adapter, struct ehea_mr *old_mr,
+ struct ehea_mr *shared_mr);
+
+int ehea_rem_mr(struct ehea_mr *mr);
void ehea_error_data(struct ehea_adapter *adapter, u64 res_handle);
-
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