Adding upstream version 4.19.249.upstream/4.19.249upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 150 insertions, 0 deletions

diff --git a/arch/mips/include/asm/pci.h b/arch/mips/include/asm/pci.h
new file mode 100644
index 000000000..436099883
--- /dev/null
+++ b/arch/mips/include/asm/pci.h
@@ -0,0 +1,150 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+#ifndef _ASM_PCI_H
+#define _ASM_PCI_H
+
+#include <linux/mm.h>
+
+#ifdef __KERNEL__
+
+/*
+ * This file essentially defines the interface between board
+ * specific PCI code and MIPS common PCI code.	Should potentially put
+ * into include/asm/pci.h file.
+ */
+
+#include <linux/ioport.h>
+#include <linux/list.h>
+#include <linux/of.h>
+
+#ifdef CONFIG_PCI_DRIVERS_LEGACY
+
+/*
+ * Each pci channel is a top-level PCI bus seem by CPU.	 A machine  with
+ * multiple PCI channels may have multiple PCI host controllers or a
+ * single controller supporting multiple channels.
+ */
+struct pci_controller {
+	struct list_head list;
+	struct pci_bus *bus;
+	struct device_node *of_node;
+
+	struct pci_ops *pci_ops;
+	struct resource *mem_resource;
+	unsigned long mem_offset;
+	struct resource *io_resource;
+	unsigned long io_offset;
+	unsigned long io_map_base;
+	struct resource *busn_resource;
+
+#ifndef CONFIG_PCI_DOMAINS_GENERIC
+	unsigned int index;
+	/* For compatibility with current (as of July 2003) pciutils
+	   and XFree86. Eventually will be removed. */
+	unsigned int need_domain_info;
+#endif
+
+	/* Optional access methods for reading/writing the bus number
+	   of the PCI controller */
+	int (*get_busno)(void);
+	void (*set_busno)(int busno);
+};
+
+/*
+ * Used by boards to register their PCI busses before the actual scanning.
+ */
+extern void register_pci_controller(struct pci_controller *hose);
+
+/*
+ * board supplied pci irq fixup routine
+ */
+extern int pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin);
+
+/* Do platform specific device initialization at pci_enable_device() time */
+extern int pcibios_plat_dev_init(struct pci_dev *dev);
+
+extern char * (*pcibios_plat_setup)(char *str);
+
+#ifdef CONFIG_OF
+/* this function parses memory ranges from a device node */
+extern void pci_load_of_ranges(struct pci_controller *hose,
+			       struct device_node *node);
+#else
+static inline void pci_load_of_ranges(struct pci_controller *hose,
+				      struct device_node *node) {}
+#endif
+
+#ifdef CONFIG_PCI_DOMAINS_GENERIC
+static inline void set_pci_need_domain_info(struct pci_controller *hose,
+					    int need_domain_info)
+{
+	/* nothing to do */
+}
+#elif defined(CONFIG_PCI_DOMAINS)
+static inline void set_pci_need_domain_info(struct pci_controller *hose,
+					    int need_domain_info)
+{
+	hose->need_domain_info = need_domain_info;
+}
+#endif /* CONFIG_PCI_DOMAINS */
+
+#endif
+
+/* Can be used to override the logic in pci_scan_bus for skipping
+   already-configured bus numbers - to be used for buggy BIOSes
+   or architectures with incomplete PCI setup by the loader */
+static inline unsigned int pcibios_assign_all_busses(void)
+{
+	return 1;
+}
+
+extern unsigned long PCIBIOS_MIN_IO;
+extern unsigned long PCIBIOS_MIN_MEM;
+
+#define PCIBIOS_MIN_CARDBUS_IO	0x4000
+
+#define HAVE_PCI_MMAP
+#define ARCH_GENERIC_PCI_MMAP_RESOURCE
+#define HAVE_ARCH_PCI_RESOURCE_TO_USER
+
+/*
+ * Dynamic DMA mapping stuff.
+ * MIPS has everything mapped statically.
+ */
+
+#include <linux/types.h>
+#include <linux/slab.h>
+#include <linux/scatterlist.h>
+#include <linux/string.h>
+#include <asm/io.h>
+
+#ifdef CONFIG_PCI_DOMAINS_GENERIC
+static inline int pci_proc_domain(struct pci_bus *bus)
+{
+	return pci_domain_nr(bus);
+}
+#elif defined(CONFIG_PCI_DOMAINS)
+#define pci_domain_nr(bus) ((struct pci_controller *)(bus)->sysdata)->index
+
+static inline int pci_proc_domain(struct pci_bus *bus)
+{
+	struct pci_controller *hose = bus->sysdata;
+	return hose->need_domain_info;
+}
+#endif /* CONFIG_PCI_DOMAINS */
+
+#endif /* __KERNEL__ */
+
+/* Do platform specific device initialization at pci_enable_device() time */
+extern int pcibios_plat_dev_init(struct pci_dev *dev);
+
+/* Chances are this interrupt is wired PC-style ...  */
+static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
+{
+	return channel ? 15 : 14;
+}
+
+#endif /* _ASM_PCI_H */