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From: Takao Indoh <indou.takao@jp.fujitsu.com>
To: linux-pci@vger.kernel.org, x86@kernel.org, linux-kernel@vger.kernel.org
Cc: Takao Indoh <indou.takao@jp.fujitsu.com>,
	tokunaga.keiich@jp.fujitsu.com, kexec@lists.infradead.org,
	hbabu@us.ibm.com, andi@firstfloor.org, ddutile@redhat.com,
	ishii.hironobu@jp.fujitsu.com, hpa@zytor.com,
	bhelgaas@google.com, tglx@linutronix.de, yinghai@kernel.org,
	mingo@redhat.com, vgoyal@redhat.com, khalid@gonehiking.org
Subject: [PATCH v6 1/5] x86, pci: add dummy pci device for early stage
Date: Tue, 13 Nov 2012 18:07:33 +0900 (JST)	[thread overview]
Message-ID: <20121113090222.1180.36111.sendpatchset@indoh> (raw)
In-Reply-To: <20121113090212.1180.12233.sendpatchset@indoh>

From: Yinghai Lu <yinghai@kernel.org>

So we can pass pci_dev *dev to reuse some generic pci functions.

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Takao Indoh <indou.takao@jp.fujitsu.com>
---
 arch/x86/include/asm/pci-direct.h |    2 +
 arch/x86/pci/early.c              |   75 +++++++++++++++++++++++++++++++++++++
 2 files changed, 77 insertions(+), 0 deletions(-)

diff --git a/arch/x86/include/asm/pci-direct.h b/arch/x86/include/asm/pci-direct.h
index b1e7a45..b6360d3 100644
--- a/arch/x86/include/asm/pci-direct.h
+++ b/arch/x86/include/asm/pci-direct.h
@@ -18,4 +18,6 @@ extern int early_pci_allowed(void);
 extern unsigned int pci_early_dump_regs;
 extern void early_dump_pci_device(u8 bus, u8 slot, u8 func);
 extern void early_dump_pci_devices(void);
+
+struct pci_dev *get_early_pci_dev(int num, int slot, int func);
 #endif /* _ASM_X86_PCI_DIRECT_H */
diff --git a/arch/x86/pci/early.c b/arch/x86/pci/early.c
index d1067d5..aea6b2b 100644
--- a/arch/x86/pci/early.c
+++ b/arch/x86/pci/early.c
@@ -109,3 +109,78 @@ void early_dump_pci_devices(void)
 		}
 	}
 }
+
+static __init int
+early_pci_read(struct pci_bus *bus, unsigned int devfn, int where,
+			int size, u32 *value)
+{
+	int num, slot, func;
+
+	num = bus->number;
+	slot = devfn >> 3;
+	func = devfn & 7;
+	switch (size) {
+	case 1:
+		*value = read_pci_config_byte(num, slot, func, where);
+		break;
+	case 2:
+		*value = read_pci_config_16(num, slot, func, where);
+		break;
+	case 4:
+		*value = read_pci_config(num, slot, func, where);
+		break;
+	}
+
+	return 0;
+}
+
+static __init int
+early_pci_write(struct pci_bus *bus, unsigned int devfn, int where,
+			int size, u32 value)
+{
+	int num, slot, func;
+
+	num = bus->number;
+	slot = devfn >> 3;
+	func = devfn & 7;
+	switch (size) {
+	case 1:
+		write_pci_config_byte(num, slot, func, where, (u8)value);
+		break;
+	case 2:
+		write_pci_config_16(num, slot, func, where, (u16)value);
+		break;
+	case 4:
+		write_pci_config(num, slot, func, where, (u32)value);
+		break;
+	}
+
+	return 0;
+}
+
+static __initdata struct pci_ops pci_early_ops = {
+	.read  = early_pci_read,
+	.write = early_pci_write,
+};
+static __initdata struct pci_bus pci_early_bus = {
+	.ops = &pci_early_ops,
+};
+static __initdata char pci_early_init_name[8];
+static __initdata struct pci_dev pci_early_dev = {
+	.bus = &pci_early_bus,
+	.dev = {
+		.init_name = pci_early_init_name,
+	},
+};
+
+__init struct pci_dev *get_early_pci_dev(int num, int slot, int func)
+{
+	struct pci_dev *pdev;
+
+	pdev = &pci_early_dev;
+	pdev->devfn = (slot<<3) | (func & 7);
+	pdev->bus->number = num;
+	sprintf((char *)pdev->dev.init_name, "%02x:%02x.%01x", num, slot, func);
+
+	return pdev;
+}
-- 
1.7.1



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WARNING: multiple messages have this Message-ID (diff)
From: Takao Indoh <indou.takao@jp.fujitsu.com>
To: linux-pci@vger.kernel.org, x86@kernel.org, linux-kernel@vger.kernel.org
Cc: tokunaga.keiich@jp.fujitsu.com, kexec@lists.infradead.org,
	hbabu@us.ibm.com, andi@firstfloor.org, ddutile@redhat.com,
	Takao Indoh <indou.takao@jp.fujitsu.com>,
	ishii.hironobu@jp.fujitsu.com, hpa@zytor.com,
	bhelgaas@google.com, tglx@linutronix.de, yinghai@kernel.org,
	mingo@redhat.com, vgoyal@redhat.com, khalid@gonehiking.org
Subject: [PATCH v6 1/5] x86, pci: add dummy pci device for early stage
Date: Tue, 13 Nov 2012 18:07:33 +0900 (JST)	[thread overview]
Message-ID: <20121113090222.1180.36111.sendpatchset@indoh> (raw)
In-Reply-To: <20121113090212.1180.12233.sendpatchset@indoh>

From: Yinghai Lu <yinghai@kernel.org>

So we can pass pci_dev *dev to reuse some generic pci functions.

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Takao Indoh <indou.takao@jp.fujitsu.com>
---
 arch/x86/include/asm/pci-direct.h |    2 +
 arch/x86/pci/early.c              |   75 +++++++++++++++++++++++++++++++++++++
 2 files changed, 77 insertions(+), 0 deletions(-)

diff --git a/arch/x86/include/asm/pci-direct.h b/arch/x86/include/asm/pci-direct.h
index b1e7a45..b6360d3 100644
--- a/arch/x86/include/asm/pci-direct.h
+++ b/arch/x86/include/asm/pci-direct.h
@@ -18,4 +18,6 @@ extern int early_pci_allowed(void);
 extern unsigned int pci_early_dump_regs;
 extern void early_dump_pci_device(u8 bus, u8 slot, u8 func);
 extern void early_dump_pci_devices(void);
+
+struct pci_dev *get_early_pci_dev(int num, int slot, int func);
 #endif /* _ASM_X86_PCI_DIRECT_H */
diff --git a/arch/x86/pci/early.c b/arch/x86/pci/early.c
index d1067d5..aea6b2b 100644
--- a/arch/x86/pci/early.c
+++ b/arch/x86/pci/early.c
@@ -109,3 +109,78 @@ void early_dump_pci_devices(void)
 		}
 	}
 }
+
+static __init int
+early_pci_read(struct pci_bus *bus, unsigned int devfn, int where,
+			int size, u32 *value)
+{
+	int num, slot, func;
+
+	num = bus->number;
+	slot = devfn >> 3;
+	func = devfn & 7;
+	switch (size) {
+	case 1:
+		*value = read_pci_config_byte(num, slot, func, where);
+		break;
+	case 2:
+		*value = read_pci_config_16(num, slot, func, where);
+		break;
+	case 4:
+		*value = read_pci_config(num, slot, func, where);
+		break;
+	}
+
+	return 0;
+}
+
+static __init int
+early_pci_write(struct pci_bus *bus, unsigned int devfn, int where,
+			int size, u32 value)
+{
+	int num, slot, func;
+
+	num = bus->number;
+	slot = devfn >> 3;
+	func = devfn & 7;
+	switch (size) {
+	case 1:
+		write_pci_config_byte(num, slot, func, where, (u8)value);
+		break;
+	case 2:
+		write_pci_config_16(num, slot, func, where, (u16)value);
+		break;
+	case 4:
+		write_pci_config(num, slot, func, where, (u32)value);
+		break;
+	}
+
+	return 0;
+}
+
+static __initdata struct pci_ops pci_early_ops = {
+	.read  = early_pci_read,
+	.write = early_pci_write,
+};
+static __initdata struct pci_bus pci_early_bus = {
+	.ops = &pci_early_ops,
+};
+static __initdata char pci_early_init_name[8];
+static __initdata struct pci_dev pci_early_dev = {
+	.bus = &pci_early_bus,
+	.dev = {
+		.init_name = pci_early_init_name,
+	},
+};
+
+__init struct pci_dev *get_early_pci_dev(int num, int slot, int func)
+{
+	struct pci_dev *pdev;
+
+	pdev = &pci_early_dev;
+	pdev->devfn = (slot<<3) | (func & 7);
+	pdev->bus->number = num;
+	sprintf((char *)pdev->dev.init_name, "%02x:%02x.%01x", num, slot, func);
+
+	return pdev;
+}
-- 
1.7.1



  reply	other threads:[~2012-11-13  9:07 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-11-13  9:07 [PATCH v6 0/5] Reset PCIe devices to address DMA problem on kdump with iommu Takao Indoh
2012-11-13  9:07 ` Takao Indoh
2012-11-13  9:07 ` Takao Indoh [this message]
2012-11-13  9:07   ` [PATCH v6 1/5] x86, pci: add dummy pci device for early stage Takao Indoh
2012-11-13 10:01   ` Andrew Murray
2012-11-13 10:01     ` Andrew Murray
2012-11-13 10:57     ` Takao Indoh
2012-11-13 10:57       ` Takao Indoh
2012-11-13  9:07 ` [PATCH v6 2/5] PCI: Define the maximum number of PCI function Takao Indoh
2012-11-13  9:07   ` Takao Indoh
2012-11-13  9:07 ` [PATCH v6 3/5] Make reset_devices available at early stage Takao Indoh
2012-11-13  9:07   ` Takao Indoh
2012-11-13  9:08 ` [PATCH v6 4/5] x86, pci: Reset PCIe devices at boot time Takao Indoh
2012-11-13  9:08   ` Takao Indoh
2012-11-13  9:08 ` [PATCH v6 5/5] x86, pci: Enable PCI INTx when MSI is disabled Takao Indoh
2012-11-13  9:08   ` Takao Indoh

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