Merge http://linux-voyager.bkbits.net/mca-sysfs-2.5

into home.transmeta.com:/home/torvalds/v2.5/linux

2 files changed, 181 insertions, 70 deletions

diff --git a/include/linux/mca-legacy.h b/include/linux/mca-legacy.h
new file mode 100644
index 000000000000..af45394d3cd2
--- /dev/null
+++ b/include/linux/mca-legacy.h
@@ -0,0 +1,68 @@
+/* -*- mode: c; c-basic-offset: 8 -*- */
+
+/* This is the function prototypes for the old legacy MCA interface
+ *
+ * Please move your driver to the new sysfs based one instead */
+
+#ifndef _LINUX_MCA_LEGACY_H
+#define _LINUX_MCA_LEGACY_H
+
+/* MCA_NOTFOUND is an error condition.  The other two indicate
+ * motherboard POS registers contain the adapter.  They might be
+ * returned by the mca_find_adapter() function, and can be used as
+ * arguments to mca_read_stored_pos().  I'm not going to allow direct
+ * access to the motherboard registers until we run across an adapter
+ * that requires it.  We don't know enough about them to know if it's
+ * safe.
+ *
+ * See Documentation/mca.txt or one of the existing drivers for
+ * more information.
+ */
+#define MCA_NOTFOUND	(-1)
+
+
+
+/* Returns the slot of the first enabled adapter matching id.  User can
+ * specify a starting slot beyond zero, to deal with detecting multiple
+ * devices.  Returns MCA_NOTFOUND if id not found.  Also checks the
+ * integrated adapters.
+ */
+extern int mca_find_adapter(int id, int start);
+extern int mca_find_unused_adapter(int id, int start);
+
+/* adapter state info - returns 0 if no */
+extern int mca_isadapter(int slot);
+extern int mca_isenabled(int slot);
+
+extern int mca_is_adapter_used(int slot);
+extern int mca_mark_as_used(int slot);
+extern void mca_mark_as_unused(int slot);
+
+/* gets a byte out of POS register (stored in memory) */
+extern unsigned char mca_read_stored_pos(int slot, int reg);
+
+/* This can be expanded later.  Right now, it gives us a way of
+ * getting meaningful information into the MCA_info structure,
+ * so we can have a more interesting /proc/mca.
+ */
+extern void mca_set_adapter_name(int slot, char* name);
+extern char* mca_get_adapter_name(int slot);
+
+/* These routines actually mess with the hardware POS registers.  They
+ * temporarily disable the device (and interrupts), so make sure you know
+ * what you're doing if you use them.  Furthermore, writing to a POS may
+ * result in two devices trying to share a resource, which in turn can
+ * result in multiple devices sharing memory spaces, IRQs, or even trashing
+ * hardware.  YOU HAVE BEEN WARNED.
+ *
+ * You can only access slots with this.  Motherboard registers are off
+ * limits.
+ */
+
+/* read a byte from the specified POS register. */
+extern unsigned char mca_read_pos(int slot, int reg);
+
+/* write a byte to the specified POS register. */
+extern void mca_write_pos(int slot, int reg, unsigned char byte);
+
+#endif
diff --git a/include/linux/mca.h b/include/linux/mca.h
index 3e83a9134acf..137c3973c600 100644
--- a/include/linux/mca.h
+++ b/include/linux/mca.h
@@ -6,6 +6,14 @@
 #ifndef _LINUX_MCA_H
 #define _LINUX_MCA_H
 
+/* FIXME: This shouldn't happen, but we need everything that previously
+ * included mca.h to compile.  Take it out later when the MCA #includes
+ * are sorted out */
+#include <linux/device.h>
+
+/* get the platform specific defines */
+#include <asm/mca.h>
+
 /* The detection of MCA bus is done in the real mode (using BIOS).
  * The information is exported to the protected code, where this
  * variable is set to one in case MCA bus was detected.
@@ -14,58 +22,6 @@
 extern int  MCA_bus;
 #endif
 
-/* Maximal number of MCA slots - actually, some machines have less, but
- * they all have sufficient number of POS registers to cover 8.
- */
-#define MCA_MAX_SLOT_NR  8
-
-/* MCA_NOTFOUND is an error condition.  The other two indicate
- * motherboard POS registers contain the adapter.  They might be
- * returned by the mca_find_adapter() function, and can be used as
- * arguments to mca_read_stored_pos().  I'm not going to allow direct
- * access to the motherboard registers until we run across an adapter
- * that requires it.  We don't know enough about them to know if it's
- * safe.
- *
- * See Documentation/mca.txt or one of the existing drivers for
- * more information.
- */
-#define MCA_NOTFOUND	(-1)
-#define MCA_INTEGSCSI	(MCA_MAX_SLOT_NR)
-#define MCA_INTEGVIDEO	(MCA_MAX_SLOT_NR+1)
-#define MCA_MOTHERBOARD (MCA_MAX_SLOT_NR+2)
-
-/* Max number of adapters, including both slots and various integrated
- * things.
- */
-#define MCA_NUMADAPTERS (MCA_MAX_SLOT_NR+3)
-
-/* Returns the slot of the first enabled adapter matching id.  User can
- * specify a starting slot beyond zero, to deal with detecting multiple
- * devices.  Returns MCA_NOTFOUND if id not found.  Also checks the
- * integrated adapters.
- */
-extern int mca_find_adapter(int id, int start);
-extern int mca_find_unused_adapter(int id, int start);
-
-/* adapter state info - returns 0 if no */
-extern int mca_isadapter(int slot);
-extern int mca_isenabled(int slot);
-
-extern int mca_is_adapter_used(int slot);
-extern int mca_mark_as_used(int slot);
-extern void mca_mark_as_unused(int slot);
-
-/* gets a byte out of POS register (stored in memory) */
-extern unsigned char mca_read_stored_pos(int slot, int reg);
-
-/* This can be expanded later.  Right now, it gives us a way of
- * getting meaningful information into the MCA_info structure,
- * so we can have a more interesting /proc/mca.
- */
-extern void mca_set_adapter_name(int slot, char* name);
-extern char* mca_get_adapter_name(int slot);
-
 /* This sets up an information callback for /proc/mca/slot?.  The
  * function is called with the buffer, slot, and device pointer (or
  * some equally informative context information, or nothing, if you
@@ -78,28 +34,115 @@ extern char* mca_get_adapter_name(int slot);
  * nastiness.
  */
 typedef int (*MCA_ProcFn)(char* buf, int slot, void* dev);
-extern void mca_set_adapter_procfn(int slot, MCA_ProcFn, void* dev);
-
-/* These routines actually mess with the hardware POS registers.  They
- * temporarily disable the device (and interrupts), so make sure you know
- * what you're doing if you use them.  Furthermore, writing to a POS may
- * result in two devices trying to share a resource, which in turn can
- * result in multiple devices sharing memory spaces, IRQs, or even trashing
- * hardware.  YOU HAVE BEEN WARNED.
- *
- * You can only access slots with this.  Motherboard registers are off
- * limits.
- */
-
-/* read a byte from the specified POS register. */
-extern unsigned char mca_read_pos(int slot, int reg);
-
-/* write a byte to the specified POS register. */
-extern void mca_write_pos(int slot, int reg, unsigned char byte);
 
 /* Should only be called by the NMI interrupt handler, this will do some
  * fancy stuff to figure out what might have generated a NMI.
  */
 extern void mca_handle_nmi(void);
 
+enum MCA_AdapterStatus {
+	MCA_ADAPTER_NORMAL = 0,
+	MCA_ADAPTER_NONE = 1,
+	MCA_ADAPTER_DISABLED = 2,
+	MCA_ADAPTER_ERROR = 3
+};
+
+struct mca_device {
+	u64			dma_mask;
+	int			pos_id;
+	int			slot;
+
+	/* index into id_table, set by the bus match routine */
+	int			index;
+
+	/* is there a driver installed? 0 - No, 1 - Yes */
+	int			driver_loaded;
+	/* POS registers */
+	unsigned char		pos[8];
+	/* if a pseudo adapter of the motherboard, this is the motherboard
+	 * register value to use for setup cycles */
+	short			pos_register;
+	
+	enum MCA_AdapterStatus	status;
+#ifdef CONFIG_MCA_PROC_FS
+	/* name of the proc/mca file */
+	char			procname[8];
+	/* /proc info callback */
+	MCA_ProcFn		procfn;
+	/* device/context info for proc callback */
+	void			*proc_dev;
+#endif
+	struct device		dev;
+};
+#define to_mca_device(mdev) container_of(mdev, struct mca_device, dev)
+
+struct mca_bus_accessor_functions {
+	unsigned char	(*mca_read_pos)(struct mca_device *, int reg);
+	void		(*mca_write_pos)(struct mca_device *, int reg,
+					 unsigned char byte);
+	int		(*mca_transform_irq)(struct mca_device *, int irq);
+	int		(*mca_transform_ioport)(struct mca_device *,
+						  int region);
+	void *		(*mca_transform_memory)(struct mca_device *,
+						void *memory);
+};
+
+struct mca_bus {
+	u64			default_dma_mask;
+	int			number;
+	struct mca_bus_accessor_functions f;
+	struct device		dev;
+};
+#define to_mca_bus(mdev) container_of(mdev, struct mca_bus, dev)
+
+struct mca_driver {
+	const short		*id_table;
+	void			*driver_data;
+	struct device_driver	driver;
+};
+#define to_mca_driver(mdriver) container_of(mdriver, struct mca_driver, driver)
+
+/* Ongoing supported API functions */
+extern struct mca_device *mca_find_device_by_slot(int slot);
+extern int mca_system_init(void);
+extern struct mca_bus *mca_attach_bus(int);
+
+extern unsigned char mca_device_read_stored_pos(struct mca_device *mca_dev,
+						int reg);
+extern unsigned char mca_device_read_pos(struct mca_device *mca_dev, int reg);
+extern void mca_device_write_pos(struct mca_device *mca_dev, int reg,
+				 unsigned char byte);
+extern int mca_device_transform_irq(struct mca_device *mca_dev, int irq);
+extern int mca_device_transform_ioport(struct mca_device *mca_dev, int port);
+extern void *mca_device_transform_memory(struct mca_device *mca_dev,
+					 void *mem);
+extern int mca_device_claimed(struct mca_device *mca_dev);
+extern void mca_device_set_claim(struct mca_device *mca_dev, int val);
+extern enum MCA_AdapterStatus mca_device_status(struct mca_device *mca_dev);
+
+extern struct bus_type mca_bus_type;
+
+extern int mca_register_driver(struct mca_driver *drv);
+extern void mca_unregister_driver(struct mca_driver *drv);
+
+/* WARNING: only called by the boot time device setup */
+extern int mca_register_device(int bus, struct mca_device *mca_dev);
+
+#ifdef CONFIG_MCA_LEGACY
+#include <linux/mca-legacy.h>
+#endif
+
+#ifdef CONFIG_MCA_PROC_FS
+extern void mca_do_proc_init(void);
+extern void mca_set_adapter_procfn(int slot, MCA_ProcFn, void* dev);
+#else
+static inline void mca_do_proc_init(void)
+{
+}
+
+static inline void mca_set_adapter_procfn(int slot, MCA_ProcFn *fn, void* dev)
+{
+}
+#endif
+
 #endif /* _LINUX_MCA_H */