aboutsummaryrefslogtreecommitdiffstats
path: root/target/linux/mvebu/patches-3.10/0070-PCI-use-weak-functions-for-MSI-arch-specific-functio.patch
diff options
context:
space:
mode:
Diffstat (limited to 'target/linux/mvebu/patches-3.10/0070-PCI-use-weak-functions-for-MSI-arch-specific-functio.patch')
-rw-r--r--target/linux/mvebu/patches-3.10/0070-PCI-use-weak-functions-for-MSI-arch-specific-functio.patch291
1 files changed, 0 insertions, 291 deletions
diff --git a/target/linux/mvebu/patches-3.10/0070-PCI-use-weak-functions-for-MSI-arch-specific-functio.patch b/target/linux/mvebu/patches-3.10/0070-PCI-use-weak-functions-for-MSI-arch-specific-functio.patch
deleted file mode 100644
index 364898c5e8..0000000000
--- a/target/linux/mvebu/patches-3.10/0070-PCI-use-weak-functions-for-MSI-arch-specific-functio.patch
+++ /dev/null
@@ -1,291 +0,0 @@
-From 4fb403ed86e78027a5b85333fa1491d5a0e68ae9 Mon Sep 17 00:00:00 2001
-From: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
-Date: Wed, 19 Jun 2013 09:42:32 +0200
-Subject: [PATCH 070/203] PCI: use weak functions for MSI arch-specific
- functions
-
-Until now, the MSI architecture-specific functions could be overloaded
-using a fairly complex set of #define and compile-time
-conditionals. In order to prepare for the introduction of the msi_chip
-infrastructure, it is desirable to switch all those functions to use
-the 'weak' mechanism. This commit converts all the architectures that
-were overidding those MSI functions to use the new strategy.
-
-Note that we keep two separate, non-weak, functions
-default_teardown_msi_irqs() and default_restore_msi_irqs() for the
-default behavior of the arch_teardown_msi_irqs() and
-arch_restore_msi_irqs(), as the default behavior is needed by x86 PCI
-code.
-
-Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
-Acked-by: Bjorn Helgaas <bhelgaas@google.com>
-Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
-Tested-by: Daniel Price <daniel.price@gmail.com>
-Tested-by: Thierry Reding <thierry.reding@gmail.com>
-Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
-Cc: Paul Mackerras <paulus@samba.org>
-Cc: linuxppc-dev@lists.ozlabs.org
-Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
-Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
-Cc: linux390@de.ibm.com
-Cc: linux-s390@vger.kernel.org
-Cc: Thomas Gleixner <tglx@linutronix.de>
-Cc: Ingo Molnar <mingo@redhat.com>
-Cc: H. Peter Anvin <hpa@zytor.com>
-Cc: x86@kernel.org
-Cc: Russell King <linux@arm.linux.org.uk>
-Cc: Tony Luck <tony.luck@intel.com>
-Cc: Fenghua Yu <fenghua.yu@intel.com>
-Cc: linux-ia64@vger.kernel.org
-Cc: Ralf Baechle <ralf@linux-mips.org>
-Cc: linux-mips@linux-mips.org
-Cc: David S. Miller <davem@davemloft.net>
-Cc: sparclinux@vger.kernel.org
-Cc: Chris Metcalf <cmetcalf@tilera.com>
----
- arch/mips/include/asm/pci.h | 5 -----
- arch/powerpc/include/asm/pci.h | 5 -----
- arch/s390/include/asm/pci.h | 4 ----
- arch/x86/include/asm/pci.h | 30 --------------------------
- arch/x86/kernel/x86_init.c | 24 +++++++++++++++++++++
- drivers/pci/msi.c | 48 +++++++++++++++++++++---------------------
- include/linux/msi.h | 8 ++++++-
- 7 files changed, 55 insertions(+), 69 deletions(-)
-
---- a/arch/mips/include/asm/pci.h
-+++ b/arch/mips/include/asm/pci.h
-@@ -137,11 +137,6 @@ static inline int pci_get_legacy_ide_irq
- return channel ? 15 : 14;
- }
-
--#ifdef CONFIG_CPU_CAVIUM_OCTEON
--/* MSI arch hook for OCTEON */
--#define arch_setup_msi_irqs arch_setup_msi_irqs
--#endif
--
- extern char * (*pcibios_plat_setup)(char *str);
-
- #ifdef CONFIG_OF
---- a/arch/powerpc/include/asm/pci.h
-+++ b/arch/powerpc/include/asm/pci.h
-@@ -113,11 +113,6 @@ extern int pci_domain_nr(struct pci_bus
- /* Decide whether to display the domain number in /proc */
- extern int pci_proc_domain(struct pci_bus *bus);
-
--/* MSI arch hooks */
--#define arch_setup_msi_irqs arch_setup_msi_irqs
--#define arch_teardown_msi_irqs arch_teardown_msi_irqs
--#define arch_msi_check_device arch_msi_check_device
--
- struct vm_area_struct;
- /* Map a range of PCI memory or I/O space for a device into user space */
- int pci_mmap_page_range(struct pci_dev *pdev, struct vm_area_struct *vma,
---- a/arch/s390/include/asm/pci.h
-+++ b/arch/s390/include/asm/pci.h
-@@ -21,10 +21,6 @@ void pci_iounmap(struct pci_dev *, void
- int pci_domain_nr(struct pci_bus *);
- int pci_proc_domain(struct pci_bus *);
-
--/* MSI arch hooks */
--#define arch_setup_msi_irqs arch_setup_msi_irqs
--#define arch_teardown_msi_irqs arch_teardown_msi_irqs
--
- #define ZPCI_BUS_NR 0 /* default bus number */
- #define ZPCI_DEVFN 0 /* default device number */
-
---- a/arch/x86/include/asm/pci.h
-+++ b/arch/x86/include/asm/pci.h
-@@ -100,29 +100,6 @@ static inline void early_quirks(void) {
- extern void pci_iommu_alloc(void);
-
- #ifdef CONFIG_PCI_MSI
--/* MSI arch specific hooks */
--static inline int x86_setup_msi_irqs(struct pci_dev *dev, int nvec, int type)
--{
-- return x86_msi.setup_msi_irqs(dev, nvec, type);
--}
--
--static inline void x86_teardown_msi_irqs(struct pci_dev *dev)
--{
-- x86_msi.teardown_msi_irqs(dev);
--}
--
--static inline void x86_teardown_msi_irq(unsigned int irq)
--{
-- x86_msi.teardown_msi_irq(irq);
--}
--static inline void x86_restore_msi_irqs(struct pci_dev *dev, int irq)
--{
-- x86_msi.restore_msi_irqs(dev, irq);
--}
--#define arch_setup_msi_irqs x86_setup_msi_irqs
--#define arch_teardown_msi_irqs x86_teardown_msi_irqs
--#define arch_teardown_msi_irq x86_teardown_msi_irq
--#define arch_restore_msi_irqs x86_restore_msi_irqs
- /* implemented in arch/x86/kernel/apic/io_apic. */
- struct msi_desc;
- int native_setup_msi_irqs(struct pci_dev *dev, int nvec, int type);
-@@ -130,16 +107,9 @@ void native_teardown_msi_irq(unsigned in
- void native_restore_msi_irqs(struct pci_dev *dev, int irq);
- int setup_msi_irq(struct pci_dev *dev, struct msi_desc *msidesc,
- unsigned int irq_base, unsigned int irq_offset);
--/* default to the implementation in drivers/lib/msi.c */
--#define HAVE_DEFAULT_MSI_TEARDOWN_IRQS
--#define HAVE_DEFAULT_MSI_RESTORE_IRQS
--void default_teardown_msi_irqs(struct pci_dev *dev);
--void default_restore_msi_irqs(struct pci_dev *dev, int irq);
- #else
- #define native_setup_msi_irqs NULL
- #define native_teardown_msi_irq NULL
--#define default_teardown_msi_irqs NULL
--#define default_restore_msi_irqs NULL
- #endif
-
- #define PCI_DMA_BUS_IS_PHYS (dma_ops->is_phys)
---- a/arch/x86/kernel/x86_init.c
-+++ b/arch/x86/kernel/x86_init.c
-@@ -107,6 +107,8 @@ struct x86_platform_ops x86_platform = {
- };
-
- EXPORT_SYMBOL_GPL(x86_platform);
-+
-+#if defined(CONFIG_PCI_MSI)
- struct x86_msi_ops x86_msi = {
- .setup_msi_irqs = native_setup_msi_irqs,
- .compose_msi_msg = native_compose_msi_msg,
-@@ -116,6 +118,28 @@ struct x86_msi_ops x86_msi = {
- .setup_hpet_msi = default_setup_hpet_msi,
- };
-
-+/* MSI arch specific hooks */
-+int arch_setup_msi_irqs(struct pci_dev *dev, int nvec, int type)
-+{
-+ return x86_msi.setup_msi_irqs(dev, nvec, type);
-+}
-+
-+void arch_teardown_msi_irqs(struct pci_dev *dev)
-+{
-+ x86_msi.teardown_msi_irqs(dev);
-+}
-+
-+void arch_teardown_msi_irq(unsigned int irq)
-+{
-+ x86_msi.teardown_msi_irq(irq);
-+}
-+
-+void arch_restore_msi_irqs(struct pci_dev *dev, int irq)
-+{
-+ x86_msi.restore_msi_irqs(dev, irq);
-+}
-+#endif
-+
- struct x86_io_apic_ops x86_io_apic_ops = {
- .init = native_io_apic_init_mappings,
- .read = native_io_apic_read,
---- a/drivers/pci/msi.c
-+++ b/drivers/pci/msi.c
-@@ -30,20 +30,21 @@ static int pci_msi_enable = 1;
-
- /* Arch hooks */
-
--#ifndef arch_msi_check_device
--int arch_msi_check_device(struct pci_dev *dev, int nvec, int type)
-+int __weak arch_setup_msi_irq(struct pci_dev *dev, struct msi_desc *desc)
-+{
-+ return -EINVAL;
-+}
-+
-+void __weak arch_teardown_msi_irq(unsigned int irq)
- {
-- return 0;
- }
--#endif
-
--#ifndef arch_setup_msi_irqs
--# define arch_setup_msi_irqs default_setup_msi_irqs
--# define HAVE_DEFAULT_MSI_SETUP_IRQS
--#endif
-+int __weak arch_msi_check_device(struct pci_dev *dev, int nvec, int type)
-+{
-+ return 0;
-+}
-
--#ifdef HAVE_DEFAULT_MSI_SETUP_IRQS
--int default_setup_msi_irqs(struct pci_dev *dev, int nvec, int type)
-+int __weak arch_setup_msi_irqs(struct pci_dev *dev, int nvec, int type)
- {
- struct msi_desc *entry;
- int ret;
-@@ -65,14 +66,11 @@ int default_setup_msi_irqs(struct pci_de
-
- return 0;
- }
--#endif
-
--#ifndef arch_teardown_msi_irqs
--# define arch_teardown_msi_irqs default_teardown_msi_irqs
--# define HAVE_DEFAULT_MSI_TEARDOWN_IRQS
--#endif
--
--#ifdef HAVE_DEFAULT_MSI_TEARDOWN_IRQS
-+/*
-+ * We have a default implementation available as a separate non-weak
-+ * function, as it is used by the Xen x86 PCI code
-+ */
- void default_teardown_msi_irqs(struct pci_dev *dev)
- {
- struct msi_desc *entry;
-@@ -86,14 +84,12 @@ void default_teardown_msi_irqs(struct pc
- arch_teardown_msi_irq(entry->irq + i);
- }
- }
--#endif
-
--#ifndef arch_restore_msi_irqs
--# define arch_restore_msi_irqs default_restore_msi_irqs
--# define HAVE_DEFAULT_MSI_RESTORE_IRQS
--#endif
-+void __weak arch_teardown_msi_irqs(struct pci_dev *dev)
-+{
-+ return default_teardown_msi_irqs(dev);
-+}
-
--#ifdef HAVE_DEFAULT_MSI_RESTORE_IRQS
- void default_restore_msi_irqs(struct pci_dev *dev, int irq)
- {
- struct msi_desc *entry;
-@@ -111,7 +107,11 @@ void default_restore_msi_irqs(struct pci
- if (entry)
- write_msi_msg(irq, &entry->msg);
- }
--#endif
-+
-+void __weak arch_restore_msi_irqs(struct pci_dev *dev, int irq)
-+{
-+ return default_restore_msi_irqs(dev, irq);
-+}
-
- static void msi_set_enable(struct pci_dev *dev, int enable)
- {
---- a/include/linux/msi.h
-+++ b/include/linux/msi.h
-@@ -50,12 +50,18 @@ struct msi_desc {
- };
-
- /*
-- * The arch hook for setup up msi irqs
-+ * The arch hooks to setup up msi irqs. Those functions are
-+ * implemented as weak symbols so that they /can/ be overriden by
-+ * architecture specific code if needed.
- */
- int arch_setup_msi_irq(struct pci_dev *dev, struct msi_desc *desc);
- void arch_teardown_msi_irq(unsigned int irq);
- int arch_setup_msi_irqs(struct pci_dev *dev, int nvec, int type);
- void arch_teardown_msi_irqs(struct pci_dev *dev);
- int arch_msi_check_device(struct pci_dev* dev, int nvec, int type);
-+void arch_restore_msi_irqs(struct pci_dev *dev, int irq);
-+
-+void default_teardown_msi_irqs(struct pci_dev *dev);
-+void default_restore_msi_irqs(struct pci_dev *dev, int irq);
-
- #endif /* LINUX_MSI_H */