aboutsummaryrefslogtreecommitdiff
path: root/arch/sparc/include/asm/sbus_64.h
diff options
context:
space:
mode:
Diffstat (limited to 'arch/sparc/include/asm/sbus_64.h')
-rw-r--r--arch/sparc/include/asm/sbus_64.h190
1 files changed, 190 insertions, 0 deletions
diff --git a/arch/sparc/include/asm/sbus_64.h b/arch/sparc/include/asm/sbus_64.h
new file mode 100644
index 00000000000..0e16b6dd7e9
--- /dev/null
+++ b/arch/sparc/include/asm/sbus_64.h
@@ -0,0 +1,190 @@
+/* sbus.h: Defines for the Sun SBus.
+ *
+ * Copyright (C) 1996, 1999, 2007 David S. Miller (davem@davemloft.net)
+ */
+
+#ifndef _SPARC64_SBUS_H
+#define _SPARC64_SBUS_H
+
+#include <linux/dma-mapping.h>
+#include <linux/ioport.h>
+
+#include <asm/oplib.h>
+#include <asm/prom.h>
+#include <asm/of_device.h>
+#include <asm/iommu.h>
+#include <asm/scatterlist.h>
+
+/* We scan which devices are on the SBus using the PROM node device
+ * tree. SBus devices are described in two different ways. You can
+ * either get an absolute address at which to access the device, or
+ * you can get a SBus 'slot' number and an offset within that slot.
+ */
+
+/* The base address at which to calculate device OBIO addresses. */
+#define SUN_SBUS_BVADDR 0x00000000
+#define SBUS_OFF_MASK 0x0fffffff
+
+/* These routines are used to calculate device address from slot
+ * numbers + offsets, and vice versa.
+ */
+
+static inline unsigned long sbus_devaddr(int slotnum, unsigned long offset)
+{
+ return (unsigned long) (SUN_SBUS_BVADDR+((slotnum)<<28)+(offset));
+}
+
+static inline int sbus_dev_slot(unsigned long dev_addr)
+{
+ return (int) (((dev_addr)-SUN_SBUS_BVADDR)>>28);
+}
+
+struct sbus_bus;
+
+/* Linux SBUS device tables */
+struct sbus_dev {
+ struct of_device ofdev;
+ struct sbus_bus *bus;
+ struct sbus_dev *next;
+ struct sbus_dev *child;
+ struct sbus_dev *parent;
+ int prom_node;
+ char prom_name[64];
+ int slot;
+
+ struct resource resource[PROMREG_MAX];
+
+ struct linux_prom_registers reg_addrs[PROMREG_MAX];
+ int num_registers;
+
+ struct linux_prom_ranges device_ranges[PROMREG_MAX];
+ int num_device_ranges;
+
+ unsigned int irqs[4];
+ int num_irqs;
+};
+#define to_sbus_device(d) container_of(d, struct sbus_dev, ofdev.dev)
+
+/* This struct describes the SBus(s) found on this machine. */
+struct sbus_bus {
+ struct of_device ofdev;
+ struct sbus_dev *devices; /* Tree of SBUS devices */
+ struct sbus_bus *next; /* Next SBUS in system */
+ int prom_node; /* OBP node of SBUS */
+ char prom_name[64]; /* Usually "sbus" or "sbi" */
+ int clock_freq;
+
+ struct linux_prom_ranges sbus_ranges[PROMREG_MAX];
+ int num_sbus_ranges;
+
+ int portid;
+};
+#define to_sbus(d) container_of(d, struct sbus_bus, ofdev.dev)
+
+extern struct sbus_bus *sbus_root;
+
+/* Device probing routines could find these handy */
+#define for_each_sbus(bus) \
+ for((bus) = sbus_root; (bus); (bus)=(bus)->next)
+
+#define for_each_sbusdev(device, bus) \
+ for((device) = (bus)->devices; (device); (device)=(device)->next)
+
+#define for_all_sbusdev(device, bus) \
+ for ((bus) = sbus_root; (bus); (bus) = (bus)->next) \
+ for ((device) = (bus)->devices; (device); (device) = (device)->next)
+
+/* Driver DVMA interfaces. */
+#define sbus_can_dma_64bit(sdev) (1)
+#define sbus_can_burst64(sdev) (1)
+extern void sbus_set_sbus64(struct sbus_dev *, int);
+extern void sbus_fill_device_irq(struct sbus_dev *);
+
+static inline void *sbus_alloc_consistent(struct sbus_dev *sdev , size_t size,
+ dma_addr_t *dma_handle)
+{
+ return dma_alloc_coherent(&sdev->ofdev.dev, size,
+ dma_handle, GFP_ATOMIC);
+}
+
+static inline void sbus_free_consistent(struct sbus_dev *sdev, size_t size,
+ void *vaddr, dma_addr_t dma_handle)
+{
+ return dma_free_coherent(&sdev->ofdev.dev, size, vaddr, dma_handle);
+}
+
+#define SBUS_DMA_BIDIRECTIONAL DMA_BIDIRECTIONAL
+#define SBUS_DMA_TODEVICE DMA_TO_DEVICE
+#define SBUS_DMA_FROMDEVICE DMA_FROM_DEVICE
+#define SBUS_DMA_NONE DMA_NONE
+
+/* All the rest use streaming mode mappings. */
+static inline dma_addr_t sbus_map_single(struct sbus_dev *sdev, void *ptr,
+ size_t size, int direction)
+{
+ return dma_map_single(&sdev->ofdev.dev, ptr, size,
+ (enum dma_data_direction) direction);
+}
+
+static inline void sbus_unmap_single(struct sbus_dev *sdev,
+ dma_addr_t dma_addr, size_t size,
+ int direction)
+{
+ dma_unmap_single(&sdev->ofdev.dev, dma_addr, size,
+ (enum dma_data_direction) direction);
+}
+
+static inline int sbus_map_sg(struct sbus_dev *sdev, struct scatterlist *sg,
+ int nents, int direction)
+{
+ return dma_map_sg(&sdev->ofdev.dev, sg, nents,
+ (enum dma_data_direction) direction);
+}
+
+static inline void sbus_unmap_sg(struct sbus_dev *sdev, struct scatterlist *sg,
+ int nents, int direction)
+{
+ dma_unmap_sg(&sdev->ofdev.dev, sg, nents,
+ (enum dma_data_direction) direction);
+}
+
+/* Finally, allow explicit synchronization of streamable mappings. */
+static inline void sbus_dma_sync_single_for_cpu(struct sbus_dev *sdev,
+ dma_addr_t dma_handle,
+ size_t size, int direction)
+{
+ dma_sync_single_for_cpu(&sdev->ofdev.dev, dma_handle, size,
+ (enum dma_data_direction) direction);
+}
+#define sbus_dma_sync_single sbus_dma_sync_single_for_cpu
+
+static inline void sbus_dma_sync_single_for_device(struct sbus_dev *sdev,
+ dma_addr_t dma_handle,
+ size_t size, int direction)
+{
+ /* No flushing needed to sync cpu writes to the device. */
+}
+
+static inline void sbus_dma_sync_sg_for_cpu(struct sbus_dev *sdev,
+ struct scatterlist *sg,
+ int nents, int direction)
+{
+ dma_sync_sg_for_cpu(&sdev->ofdev.dev, sg, nents,
+ (enum dma_data_direction) direction);
+}
+#define sbus_dma_sync_sg sbus_dma_sync_sg_for_cpu
+
+static inline void sbus_dma_sync_sg_for_device(struct sbus_dev *sdev,
+ struct scatterlist *sg,
+ int nents, int direction)
+{
+ /* No flushing needed to sync cpu writes to the device. */
+}
+
+extern void sbus_arch_bus_ranges_init(struct device_node *, struct sbus_bus *);
+extern void sbus_setup_iommu(struct sbus_bus *, struct device_node *);
+extern void sbus_setup_arch_props(struct sbus_bus *, struct device_node *);
+extern int sbus_arch_preinit(void);
+extern void sbus_arch_postinit(void);
+
+#endif /* !(_SPARC64_SBUS_H) */