From: Gavin Shan <gwshan@linux.vnet.ibm.com>
To: linuxppc-dev@lists.ozlabs.org
Cc: linux-pci@vger.kernel.org, benh@kernel.crashing.org,
bhelgaas@google.com, Gavin Shan <gwshan@linux.vnet.ibm.com>
Subject: [PATCH v4 13/21] powerpc/powernv: Introduce pnv_pci_poll()
Date: Fri, 1 May 2015 16:03:00 +1000 [thread overview]
Message-ID: <1430460188-31343-14-git-send-email-gwshan@linux.vnet.ibm.com> (raw)
In-Reply-To: <1430460188-31343-1-git-send-email-gwshan@linux.vnet.ibm.com>
We might not get some PCI slot information (e.g. power status)
immediately by OPAL API. Instead, opal_pci_poll() need to be called
for the required information.
The patch introduces pnv_pci_poll(), which bases on original
pnv_eeh_poll(), to cover the above case
Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
---
arch/powerpc/platforms/powernv/eeh-powernv.c | 28 ++--------------------------
arch/powerpc/platforms/powernv/pci.c | 16 ++++++++++++++++
arch/powerpc/platforms/powernv/pci.h | 1 +
3 files changed, 19 insertions(+), 26 deletions(-)
diff --git a/arch/powerpc/platforms/powernv/eeh-powernv.c b/arch/powerpc/platforms/powernv/eeh-powernv.c
index 58e4dcf..9253b9e 100644
--- a/arch/powerpc/platforms/powernv/eeh-powernv.c
+++ b/arch/powerpc/platforms/powernv/eeh-powernv.c
@@ -742,24 +742,6 @@ static int pnv_eeh_get_state(struct eeh_pe *pe, int *delay)
return ret;
}
-static s64 pnv_eeh_poll(uint64_t id)
-{
- s64 rc = OPAL_HARDWARE;
-
- while (1) {
- rc = opal_pci_poll(id, NULL);
- if (rc <= 0)
- break;
-
- if (system_state < SYSTEM_RUNNING)
- udelay(1000 * rc);
- else
- msleep(rc);
- }
-
- return rc;
-}
-
int pnv_eeh_phb_reset(struct pci_controller *hose, int option)
{
struct pnv_phb *phb = hose->private_data;
@@ -788,10 +770,7 @@ int pnv_eeh_phb_reset(struct pci_controller *hose, int option)
/* Issue reset and poll until it's completed */
rc = opal_pci_reset(phb->opal_id, scope, OPAL_ASSERT_RESET);
- if (rc > 0)
- rc = pnv_eeh_poll(phb->opal_id);
-
- return (rc == OPAL_SUCCESS) ? 0 : -EIO;
+ return pnv_pci_poll(phb->opal_id, rc, NULL);
}
static int __pnv_eeh_bridge_reset(struct pci_dev *dev, int option)
@@ -882,10 +861,7 @@ static int pnv_eeh_bridge_reset(struct pci_dev *dev, int option)
phb = hose->private_data;
id |= (dev->bus->number << 24) | (dev->devfn << 16) | phb->opal_id;
rc = opal_pci_reset(id, scope, OPAL_ASSERT_RESET);
- if (rc > 0)
- rc = pnv_eeh_poll(id);
-
- return (rc == OPAL_SUCCESS) ? 0 : -EIO;
+ return pnv_pci_poll(id, rc, NULL);
}
static int pnv_pci_dev_reset_type(struct pci_dev *pdev, void *data)
diff --git a/arch/powerpc/platforms/powernv/pci.c b/arch/powerpc/platforms/powernv/pci.c
index bca2aeb..a2da9a3 100644
--- a/arch/powerpc/platforms/powernv/pci.c
+++ b/arch/powerpc/platforms/powernv/pci.c
@@ -44,6 +44,22 @@
#define cfg_dbg(fmt...) do { } while(0)
//#define cfg_dbg(fmt...) printk(fmt)
+int pnv_pci_poll(uint64_t id, int64_t rval, uint8_t *pval)
+{
+ while (rval > 0) {
+ if (system_state < SYSTEM_RUNNING)
+ udelay(1000 * rval);
+ else
+ msleep(rval);
+
+ rval = opal_pci_poll(id, pval);
+ if (rval == OPAL_SUCCESS && pval)
+ rval = opal_pci_poll(id, pval);
+ }
+
+ return rval ? -EIO : 0;
+}
+
#ifdef CONFIG_PCI_MSI
static int pnv_setup_msi_irqs(struct pci_dev *pdev, int nvec, int type)
{
diff --git a/arch/powerpc/platforms/powernv/pci.h b/arch/powerpc/platforms/powernv/pci.h
index 8b10f01..82c5539 100644
--- a/arch/powerpc/platforms/powernv/pci.h
+++ b/arch/powerpc/platforms/powernv/pci.h
@@ -202,6 +202,7 @@ struct pnv_phb {
extern struct pci_ops pnv_pci_ops;
+int pnv_pci_poll(uint64_t id, int64_t rval, uint8_t *pval);
void pnv_pci_dump_phb_diag_data(struct pci_controller *hose,
unsigned char *log_buff);
int pnv_pci_cfg_read(struct pci_dn *pdn,
--
2.1.0
WARNING: multiple messages have this Message-ID (diff)
From: Gavin Shan <gwshan@linux.vnet.ibm.com>
To: linuxppc-dev@lists.ozlabs.org
Cc: bhelgaas@google.com, linux-pci@vger.kernel.org,
Gavin Shan <gwshan@linux.vnet.ibm.com>
Subject: [PATCH v4 13/21] powerpc/powernv: Introduce pnv_pci_poll()
Date: Fri, 1 May 2015 16:03:00 +1000 [thread overview]
Message-ID: <1430460188-31343-14-git-send-email-gwshan@linux.vnet.ibm.com> (raw)
In-Reply-To: <1430460188-31343-1-git-send-email-gwshan@linux.vnet.ibm.com>
We might not get some PCI slot information (e.g. power status)
immediately by OPAL API. Instead, opal_pci_poll() need to be called
for the required information.
The patch introduces pnv_pci_poll(), which bases on original
pnv_eeh_poll(), to cover the above case
Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
---
arch/powerpc/platforms/powernv/eeh-powernv.c | 28 ++--------------------------
arch/powerpc/platforms/powernv/pci.c | 16 ++++++++++++++++
arch/powerpc/platforms/powernv/pci.h | 1 +
3 files changed, 19 insertions(+), 26 deletions(-)
diff --git a/arch/powerpc/platforms/powernv/eeh-powernv.c b/arch/powerpc/platforms/powernv/eeh-powernv.c
index 58e4dcf..9253b9e 100644
--- a/arch/powerpc/platforms/powernv/eeh-powernv.c
+++ b/arch/powerpc/platforms/powernv/eeh-powernv.c
@@ -742,24 +742,6 @@ static int pnv_eeh_get_state(struct eeh_pe *pe, int *delay)
return ret;
}
-static s64 pnv_eeh_poll(uint64_t id)
-{
- s64 rc = OPAL_HARDWARE;
-
- while (1) {
- rc = opal_pci_poll(id, NULL);
- if (rc <= 0)
- break;
-
- if (system_state < SYSTEM_RUNNING)
- udelay(1000 * rc);
- else
- msleep(rc);
- }
-
- return rc;
-}
-
int pnv_eeh_phb_reset(struct pci_controller *hose, int option)
{
struct pnv_phb *phb = hose->private_data;
@@ -788,10 +770,7 @@ int pnv_eeh_phb_reset(struct pci_controller *hose, int option)
/* Issue reset and poll until it's completed */
rc = opal_pci_reset(phb->opal_id, scope, OPAL_ASSERT_RESET);
- if (rc > 0)
- rc = pnv_eeh_poll(phb->opal_id);
-
- return (rc == OPAL_SUCCESS) ? 0 : -EIO;
+ return pnv_pci_poll(phb->opal_id, rc, NULL);
}
static int __pnv_eeh_bridge_reset(struct pci_dev *dev, int option)
@@ -882,10 +861,7 @@ static int pnv_eeh_bridge_reset(struct pci_dev *dev, int option)
phb = hose->private_data;
id |= (dev->bus->number << 24) | (dev->devfn << 16) | phb->opal_id;
rc = opal_pci_reset(id, scope, OPAL_ASSERT_RESET);
- if (rc > 0)
- rc = pnv_eeh_poll(id);
-
- return (rc == OPAL_SUCCESS) ? 0 : -EIO;
+ return pnv_pci_poll(id, rc, NULL);
}
static int pnv_pci_dev_reset_type(struct pci_dev *pdev, void *data)
diff --git a/arch/powerpc/platforms/powernv/pci.c b/arch/powerpc/platforms/powernv/pci.c
index bca2aeb..a2da9a3 100644
--- a/arch/powerpc/platforms/powernv/pci.c
+++ b/arch/powerpc/platforms/powernv/pci.c
@@ -44,6 +44,22 @@
#define cfg_dbg(fmt...) do { } while(0)
//#define cfg_dbg(fmt...) printk(fmt)
+int pnv_pci_poll(uint64_t id, int64_t rval, uint8_t *pval)
+{
+ while (rval > 0) {
+ if (system_state < SYSTEM_RUNNING)
+ udelay(1000 * rval);
+ else
+ msleep(rval);
+
+ rval = opal_pci_poll(id, pval);
+ if (rval == OPAL_SUCCESS && pval)
+ rval = opal_pci_poll(id, pval);
+ }
+
+ return rval ? -EIO : 0;
+}
+
#ifdef CONFIG_PCI_MSI
static int pnv_setup_msi_irqs(struct pci_dev *pdev, int nvec, int type)
{
diff --git a/arch/powerpc/platforms/powernv/pci.h b/arch/powerpc/platforms/powernv/pci.h
index 8b10f01..82c5539 100644
--- a/arch/powerpc/platforms/powernv/pci.h
+++ b/arch/powerpc/platforms/powernv/pci.h
@@ -202,6 +202,7 @@ struct pnv_phb {
extern struct pci_ops pnv_pci_ops;
+int pnv_pci_poll(uint64_t id, int64_t rval, uint8_t *pval);
void pnv_pci_dump_phb_diag_data(struct pci_controller *hose,
unsigned char *log_buff);
int pnv_pci_cfg_read(struct pci_dn *pdn,
--
2.1.0
next prev parent reply other threads:[~2015-05-01 6:04 UTC|newest]
Thread overview: 184+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-05-01 6:02 [PATCH v4 00/21] PowerPC/PowerNV: PCI Slot Management Gavin Shan
2015-05-01 6:02 ` Gavin Shan
2015-05-01 6:02 ` [PATCH v4 01/21] pci: Add pcibios_setup_bridge() Gavin Shan
2015-05-01 6:02 ` Gavin Shan
2015-05-07 22:12 ` Bjorn Helgaas
2015-05-07 22:12 ` Bjorn Helgaas
2015-05-11 1:59 ` Gavin Shan
2015-05-11 1:59 ` Gavin Shan
2015-05-01 6:02 ` [PATCH v4 02/21] powerpc/powernv: Enable M64 on P7IOC Gavin Shan
2015-05-01 6:02 ` Gavin Shan
2015-05-09 0:18 ` Alexey Kardashevskiy
2015-05-09 0:18 ` Alexey Kardashevskiy
2015-05-11 4:37 ` Gavin Shan
2015-05-11 4:37 ` Gavin Shan
2015-05-01 6:02 ` [PATCH v4 03/21] powerpc/powernv: M64 support improvement Gavin Shan
2015-05-01 6:02 ` Gavin Shan
2015-05-09 10:24 ` Alexey Kardashevskiy
2015-05-09 10:24 ` Alexey Kardashevskiy
2015-05-11 4:47 ` Gavin Shan
2015-05-11 4:47 ` Gavin Shan
2015-05-01 6:02 ` [PATCH v4 04/21] powerpc/powernv: Improve IO and M32 mapping Gavin Shan
2015-05-01 6:02 ` Gavin Shan
2015-05-09 10:53 ` Alexey Kardashevskiy
2015-05-09 10:53 ` Alexey Kardashevskiy
2015-05-11 4:52 ` Gavin Shan
2015-05-11 4:52 ` Gavin Shan
2015-05-01 6:02 ` [PATCH v4 05/21] powerpc/powernv: Improve DMA32 segment assignment Gavin Shan
2015-05-01 6:02 ` Gavin Shan
2015-05-01 6:02 ` [PATCH v4 06/21] powerpc/powernv: Create PEs dynamically Gavin Shan
2015-05-01 6:02 ` Gavin Shan
2015-05-09 11:43 ` Alexey Kardashevskiy
2015-05-09 11:43 ` Alexey Kardashevskiy
2015-05-11 4:55 ` Gavin Shan
2015-05-11 4:55 ` Gavin Shan
2015-05-01 6:02 ` [PATCH v4 07/21] powerpc/powernv: Release " Gavin Shan
2015-05-01 6:02 ` Gavin Shan
2015-05-09 12:43 ` Alexey Kardashevskiy
2015-05-09 12:43 ` Alexey Kardashevskiy
2015-05-11 6:25 ` Gavin Shan
2015-05-11 6:25 ` Gavin Shan
2015-05-11 7:02 ` Alexey Kardashevskiy
2015-05-11 7:02 ` Alexey Kardashevskiy
2015-05-12 0:03 ` Gavin Shan
2015-05-12 0:03 ` Gavin Shan
2015-05-12 0:53 ` Alexey Kardashevskiy
2015-05-12 0:53 ` Alexey Kardashevskiy
2015-05-12 1:25 ` Gavin Shan
2015-05-12 1:25 ` Gavin Shan
2015-05-01 6:02 ` [PATCH v4 08/21] powerpc/powernv: Drop pnv_ioda_setup_dev_PE() Gavin Shan
2015-05-01 6:02 ` Gavin Shan
2015-05-09 12:45 ` Alexey Kardashevskiy
2015-05-09 12:45 ` Alexey Kardashevskiy
2015-05-01 6:02 ` [PATCH v4 09/21] powerpc/powernv: Use PCI slot reset infrastructure Gavin Shan
2015-05-01 6:02 ` Gavin Shan
2015-05-09 13:41 ` Alexey Kardashevskiy
2015-05-09 13:41 ` Alexey Kardashevskiy
2015-05-11 6:45 ` Gavin Shan
2015-05-11 6:45 ` Gavin Shan
2015-05-11 7:16 ` Alexey Kardashevskiy
2015-05-11 7:16 ` Alexey Kardashevskiy
2015-05-01 6:02 ` [PATCH v4 10/21] powerpc/powernv: Fundamental reset for PCI bus reset Gavin Shan
2015-05-01 6:02 ` Gavin Shan
2015-05-09 14:12 ` Alexey Kardashevskiy
2015-05-09 14:12 ` Alexey Kardashevskiy
2015-05-11 6:47 ` Gavin Shan
2015-05-11 6:47 ` Gavin Shan
2015-05-11 7:17 ` Alexey Kardashevskiy
2015-05-11 7:17 ` Alexey Kardashevskiy
2015-05-12 0:04 ` Gavin Shan
2015-05-12 0:04 ` Gavin Shan
2015-05-01 6:02 ` [PATCH v4 11/21] powerpc/pci: Don't scan empty slot Gavin Shan
2015-05-01 6:02 ` Gavin Shan
2015-05-01 6:02 ` [PATCH v4 12/21] powerpc/pci: Move pcibios_find_pci_bus() around Gavin Shan
2015-05-01 6:02 ` Gavin Shan
2015-05-01 6:03 ` Gavin Shan [this message]
2015-05-01 6:03 ` [PATCH v4 13/21] powerpc/powernv: Introduce pnv_pci_poll() Gavin Shan
2015-05-09 14:30 ` Alexey Kardashevskiy
2015-05-09 14:30 ` Alexey Kardashevskiy
2015-05-11 7:19 ` Gavin Shan
2015-05-11 7:19 ` Gavin Shan
2015-05-01 6:03 ` [PATCH v4 14/21] powerpc/powernv: Functions to get/reset PCI slot status Gavin Shan
2015-05-01 6:03 ` Gavin Shan
2015-05-09 14:44 ` Alexey Kardashevskiy
2015-05-09 14:44 ` Alexey Kardashevskiy
2015-05-01 6:03 ` [PATCH v4 15/21] powerpc/pci: Delay creating pci_dn Gavin Shan
2015-05-01 6:03 ` Gavin Shan
2015-05-09 14:55 ` Alexey Kardashevskiy
2015-05-09 14:55 ` Alexey Kardashevskiy
2015-05-11 7:21 ` Gavin Shan
2015-05-11 7:21 ` Gavin Shan
2015-05-01 6:03 ` [PATCH v4 16/21] powerpc/pci: Create eeh_dev while " Gavin Shan
2015-05-01 6:03 ` Gavin Shan
2015-05-09 15:08 ` Alexey Kardashevskiy
2015-05-09 15:08 ` Alexey Kardashevskiy
2015-05-11 7:24 ` Gavin Shan
2015-05-11 7:24 ` Gavin Shan
2015-05-01 6:03 ` [PATCH v4 17/21] powerpc/pci: Export traverse_pci_device_nodes() Gavin Shan
2015-05-01 6:03 ` Gavin Shan
2015-05-01 6:03 ` [PATCH v4 18/21] powerpc/pci: Update bridge windows on PCI plugging Gavin Shan
2015-05-01 6:03 ` Gavin Shan
2015-05-01 6:03 ` [PATCH v4 19/21] drivers/of: Support adding sub-tree Gavin Shan
2015-05-01 6:03 ` Gavin Shan
2015-05-01 12:54 ` Rob Herring
2015-05-01 12:54 ` Rob Herring
2015-05-01 15:22 ` Benjamin Herrenschmidt
2015-05-01 15:22 ` Benjamin Herrenschmidt
2015-05-01 18:46 ` Rob Herring
2015-05-01 18:46 ` Rob Herring
2015-05-01 22:57 ` Benjamin Herrenschmidt
2015-05-01 22:57 ` Benjamin Herrenschmidt
2015-05-01 23:29 ` Benjamin Herrenschmidt
2015-05-01 23:29 ` Benjamin Herrenschmidt
2015-05-02 2:48 ` Benjamin Herrenschmidt
2015-05-02 2:48 ` Benjamin Herrenschmidt
2015-05-04 1:30 ` Gavin Shan
2015-05-04 1:30 ` Gavin Shan
2015-05-04 4:51 ` Benjamin Herrenschmidt
2015-05-04 4:51 ` Benjamin Herrenschmidt
2015-05-04 0:23 ` Gavin Shan
2015-05-04 0:23 ` Gavin Shan
[not found] ` <1430521038.7979.70.camel-XVmvHMARGAS8U2dJNN8I7kB+6BGkLq7r@public.gmane.org>
2015-05-04 16:41 ` Pantelis Antoniou
2015-05-04 16:41 ` Pantelis Antoniou
2015-05-04 16:41 ` Pantelis Antoniou
2015-05-04 21:14 ` Benjamin Herrenschmidt
2015-05-04 21:14 ` Benjamin Herrenschmidt
2015-05-13 23:35 ` Benjamin Herrenschmidt
2015-05-13 23:35 ` Benjamin Herrenschmidt
[not found] ` <1431560124.20218.91.camel-XVmvHMARGAS8U2dJNN8I7kB+6BGkLq7r@public.gmane.org>
2015-05-14 0:18 ` Rob Herring
2015-05-14 0:18 ` Rob Herring
2015-05-14 0:18 ` Rob Herring
[not found] ` <CAL_JsqKqTa5eg3eOqx3bkeNdO_920WwDiRbQaxwWLEWpCypFmA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-05-14 0:54 ` Benjamin Herrenschmidt
2015-05-14 0:54 ` Benjamin Herrenschmidt
2015-05-14 0:54 ` Benjamin Herrenschmidt
2015-05-14 6:23 ` Pantelis Antoniou
2015-05-14 6:23 ` Pantelis Antoniou
2015-05-14 6:46 ` Benjamin Herrenschmidt
2015-05-14 6:46 ` Benjamin Herrenschmidt
2015-05-14 7:04 ` Pantelis Antoniou
2015-05-14 7:04 ` Pantelis Antoniou
[not found] ` <3988EABE-3DE9-4E1C-9778-22E35138E359-wVdstyuyKrO8r51toPun2/C9HSW9iNxf@public.gmane.org>
2015-05-14 7:14 ` Benjamin Herrenschmidt
2015-05-14 7:14 ` Benjamin Herrenschmidt
2015-05-14 7:14 ` Benjamin Herrenschmidt
2015-05-14 7:19 ` Pantelis Antoniou
2015-05-14 7:19 ` Pantelis Antoniou
2015-05-14 7:19 ` Pantelis Antoniou
[not found] ` <75F026CA-5AC1-4106-B2F0-AB0D006DEF5A-wVdstyuyKrO8r51toPun2/C9HSW9iNxf@public.gmane.org>
2015-05-14 7:25 ` Benjamin Herrenschmidt
2015-05-14 7:25 ` Benjamin Herrenschmidt
2015-05-14 7:25 ` Benjamin Herrenschmidt
2015-05-14 7:29 ` Benjamin Herrenschmidt
2015-05-14 7:29 ` Benjamin Herrenschmidt
[not found] ` <1431588358.4160.42.camel-XVmvHMARGAS8U2dJNN8I7kB+6BGkLq7r@public.gmane.org>
2015-05-14 7:34 ` Pantelis Antoniou
2015-05-14 7:34 ` Pantelis Antoniou
2015-05-14 7:34 ` Pantelis Antoniou
[not found] ` <D7FC0542-DD1A-428F-8E75-81620C6D83DC-wVdstyuyKrO8r51toPun2/C9HSW9iNxf@public.gmane.org>
2015-05-14 7:47 ` Benjamin Herrenschmidt
2015-05-14 7:47 ` Benjamin Herrenschmidt
2015-05-14 7:47 ` Benjamin Herrenschmidt
2015-05-14 11:02 ` Pantelis Antoniou
2015-05-14 11:02 ` Pantelis Antoniou
2015-05-14 11:02 ` Pantelis Antoniou
2015-05-14 23:25 ` Benjamin Herrenschmidt
2015-05-14 23:25 ` Benjamin Herrenschmidt
[not found] ` <1431564871.4160.8.camel-XVmvHMARGAS8U2dJNN8I7kB+6BGkLq7r@public.gmane.org>
2015-06-07 7:54 ` Grant Likely
2015-06-07 7:54 ` Grant Likely
[not found] ` <20150607075422.6ECE9C40A12-WNowdnHR2B42iJbIjFUEsiwD8/FfD2ys@public.gmane.org>
2015-06-08 20:57 ` Benjamin Herrenschmidt
2015-06-08 20:57 ` Benjamin Herrenschmidt
[not found] ` <1433797073.4526.163.camel-XVmvHMARGAS8U2dJNN8I7kB+6BGkLq7r@public.gmane.org>
2015-06-08 21:34 ` Grant Likely
2015-06-08 21:34 ` Grant Likely
2015-06-10 6:55 ` Gavin Shan
2015-05-03 23:28 ` Gavin Shan
2015-05-03 23:28 ` Gavin Shan
2015-05-15 1:27 ` Gavin Shan
2015-05-15 1:27 ` Gavin Shan
2015-05-01 6:03 ` [PATCH v4 20/21] powerpc/powernv: Select OF_DYNAMIC Gavin Shan
2015-05-01 6:03 ` Gavin Shan
2015-05-01 6:03 ` [PATCH v4 21/21] pci/hotplug: PowerPC PowerNV PCI hotplug driver Gavin Shan
2015-05-01 6:03 ` Gavin Shan
2015-05-09 15:54 ` Alexey Kardashevskiy
2015-05-09 15:54 ` Alexey Kardashevskiy
2015-05-11 7:38 ` Gavin Shan
2015-05-11 7:38 ` Gavin Shan
2015-05-08 23:59 ` [PATCH v4 00/21] PowerPC/PowerNV: PCI Slot Management Alexey Kardashevskiy
2015-05-08 23:59 ` Alexey Kardashevskiy
2015-05-11 7:40 ` Gavin Shan
2015-05-11 7:40 ` Gavin Shan
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