Updated ISAPnP, EISA, MCA and ISA buses to current device model.

ISA 3c509 is currently non-functional, although the EISA (3c509-eisa) and
MCA (3c529) variants should build OK.

None of this code is yet tested.

src/include/gpxe/mca.h

@@ -0,0 +1,103 @@
+/*
+ * MCA bus driver code
+ *
+ * Abstracted from 3c509.c.
+ *
+ */
+
+#ifndef MCA_H
+#define MCA_H
+
+#include <gpxe/isa_ids.h>
+#include <gpxe/device.h>
+#include <gpxe/tables.h>
+
+/*
+ * MCA constants
+ *
+ */
+#define MCA_MOTHERBOARD_SETUP_REG	0x94
+#define MCA_ADAPTER_SETUP_REG		0x96
+#define MCA_MAX_SLOT_NR			0x07	/* Must be 2^n - 1 */
+#define MCA_POS_REG(n)			(0x100+(n))
+
+/* Is there a standard that would define this? */
+#define GENERIC_MCA_VENDOR ISA_VENDOR ( 'M', 'C', 'A' )
+
+/** An MCA device ID list entry */
+struct mca_device_id {
+	/** Name */
+        const char *name;
+	/** Device ID */
+	uint16_t id;
+};
+
+/** An MCA device */
+struct mca_device {
+	/** Generic device */
+	struct device dev;
+	/** Slot number */
+	unsigned int slot;
+	/** POS register values */
+	unsigned char pos[8];
+	/** Driver for this device */
+	struct mca_driver *driver;
+	/** Driver-private data
+	 *
+	 * Use mca_set_drvdata() and mca_get_drvdata() to access
+	 * this field.
+	 */
+	void *priv;
+	/** Driver name */
+	const char *driver_name;
+};
+
+#define MCA_ID(mca) ( ( (mca)->pos[1] << 8 ) + (mca)->pos[0] )
+
+/** An MCA driver */
+struct mca_driver {
+	/** MCA ID table */
+	struct mca_device_id *ids;
+	/** Number of entries in MCA ID table */
+	unsigned int id_count;
+	/**
+	 * Probe device
+	 *
+	 * @v mca	MCA device
+	 * @v id	Matching entry in ID table
+	 * @ret rc	Return status code
+	 */
+	int ( * probe ) ( struct mca_device *mca,
+			  const struct mca_device_id *id );
+	/**
+	 * Remove device
+	 *
+	 * @v mca	MCA device
+	 */
+	void ( * remove ) ( struct mca_device *mca );
+};
+
+/** Declare an MCA driver */
+#define __mca_driver __table ( struct mca_driver, mca_drivers, 01 )
+
+/**
+ * Set MCA driver-private data
+ *
+ * @v mca		MCA device
+ * @v priv		Private data
+ */
+static inline void mca_set_drvdata ( struct mca_device *mca, void *priv ) {
+	mca->priv = priv;
+}
+
+/**
+ * Get MCA driver-private data
+ *
+ * @v mca		MCA device
+ * @ret priv		Private data
+ */
+static inline void * mca_get_drvdata ( struct mca_device *mca ) {
+	return mca->priv;
+}
+
+#endif