Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/include/asm-ppc/ocp.h b/include/asm-ppc/ocp.h
new file mode 100644
index 0000000..5ea44ca
--- /dev/null
+++ b/include/asm-ppc/ocp.h
@@ -0,0 +1,211 @@
+/*
+ * ocp.h
+ *
+ * (c) Benjamin Herrenschmidt (benh@kernel.crashing.org)
+ * Mipsys - France
+ *
+ * Derived from work (c) Armin Kuster akuster@pacbell.net
+ *
+ * Additional support and port to 2.6 LDM/sysfs by
+ * Matt Porter <mporter@kernel.crashing.org>
+ * Copyright 2003-2004 MontaVista Software, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * TODO: - Add get/put interface & fixup locking to provide same API for
+ * 2.4 and 2.5
+ * - Rework PM callbacks
+ */
+
+#ifdef __KERNEL__
+#ifndef __OCP_H__
+#define __OCP_H__
+
+#include <linux/init.h>
+#include <linux/list.h>
+#include <linux/config.h>
+#include <linux/devfs_fs_kernel.h>
+#include <linux/device.h>
+
+#include <asm/mmu.h>
+#include <asm/ocp_ids.h>
+#include <asm/rwsem.h>
+#include <asm/semaphore.h>
+
+#ifdef CONFIG_PPC_OCP
+
+#define OCP_MAX_IRQS 7
+#define MAX_EMACS 4
+#define OCP_IRQ_NA -1 /* used when ocp device does not have an irq */
+#define OCP_IRQ_MUL -2 /* used for ocp devices with multiply irqs */
+#define OCP_NULL_TYPE -1 /* used to mark end of list */
+#define OCP_CPM_NA 0 /* No Clock or Power Management avaliable */
+#define OCP_PADDR_NA 0 /* No MMIO registers */
+
+#define OCP_ANY_ID (~0)
+#define OCP_ANY_INDEX -1
+
+extern struct list_head ocp_devices;
+extern struct rw_semaphore ocp_devices_sem;
+
+struct ocp_device_id {
+ unsigned int vendor, function; /* Vendor and function ID or OCP_ANY_ID */
+ unsigned long driver_data; /* Data private to the driver */
+};
+
+
+/*
+ * Static definition of an OCP device.
+ *
+ * @vendor: Vendor code. It is _STRONGLY_ discouraged to use
+ * the vendor code as a way to match a unique device,
+ * though I kept that possibility open, you should
+ * really define different function codes for different
+ * device types
+ * @function: This is the function code for this device.
+ * @index: This index is used for mapping the Nth function of a
+ * given core. This is typically used for cross-driver
+ * matching, like looking for a given MAL or ZMII from
+ * an EMAC or for getting to the proper set of DCRs.
+ * Indices are no longer magically calculated based on
+ * structure ordering, they have to be actually coded
+ * into the ocp_def to avoid any possible confusion
+ * I _STRONGLY_ (again ? wow !) encourage anybody relying
+ * on index mapping to encode the "target" index in an
+ * associated structure pointed to by "additions", see
+ * how it's done for the EMAC driver.
+ * @paddr: Device physical address (may not mean anything...)
+ * @irq: Interrupt line for this device (TODO: think about making
+ * an array with this)
+ * @pm: Currently, contains the bitmask in CPMFR DCR for the device
+ * @additions: Optionally points to a function specific structure
+ * providing additional informations for a given device
+ * instance. It's currently used by the EMAC driver for MAL
+ * channel & ZMII port mapping among others.
+ * @show: Optionally points to a function specific structure
+ * providing a sysfs show routine for additions fields.
+ */
+struct ocp_def {
+ unsigned int vendor;
+ unsigned int function;
+ int index;
+ phys_addr_t paddr;
+ int irq;
+ unsigned long pm;
+ void *additions;
+ void (*show)(struct device *);
+};
+
+
+/* Struct for a given device instance */
+struct ocp_device {
+ struct list_head link;
+ char name[80]; /* device name */
+ struct ocp_def *def; /* device definition */
+ void *drvdata; /* driver data for this device */
+ struct ocp_driver *driver;
+ u32 current_state; /* Current operating state. In ACPI-speak,
+ this is D0-D3, D0 being fully functional,
+ and D3 being off. */
+ struct device dev;
+};
+
+struct ocp_driver {
+ struct list_head node;
+ char *name;
+ const struct ocp_device_id *id_table; /* NULL if wants all devices */
+ int (*probe) (struct ocp_device *dev); /* New device inserted */
+ void (*remove) (struct ocp_device *dev); /* Device removed (NULL if not a hot-plug capable driver) */
+ int (*suspend) (struct ocp_device *dev, u32 state); /* Device suspended */
+ int (*resume) (struct ocp_device *dev); /* Device woken up */
+ struct device_driver driver;
+};
+
+#define to_ocp_dev(n) container_of(n, struct ocp_device, dev)
+#define to_ocp_drv(n) container_of(n, struct ocp_driver, driver)
+
+/* Similar to the helpers above, these manipulate per-ocp_dev
+ * driver-specific data. Currently stored as ocp_dev::ocpdev,
+ * a void pointer, but it is not present on older kernels.
+ */
+static inline void *
+ocp_get_drvdata(struct ocp_device *pdev)
+{
+ return pdev->drvdata;
+}
+
+static inline void
+ocp_set_drvdata(struct ocp_device *pdev, void *data)
+{
+ pdev->drvdata = data;
+}
+
+#if defined (CONFIG_PM)
+/*
+ * This is right for the IBM 405 and 440 but will need to be
+ * generalized if the OCP stuff gets used on other processors.
+ */
+static inline void
+ocp_force_power_off(struct ocp_device *odev)
+{
+ mtdcr(DCRN_CPMFR, mfdcr(DCRN_CPMFR) | odev->def->pm);
+}
+
+static inline void
+ocp_force_power_on(struct ocp_device *odev)
+{
+ mtdcr(DCRN_CPMFR, mfdcr(DCRN_CPMFR) & ~odev->def->pm);
+}
+#else
+#define ocp_force_power_off(x) (void)(x)
+#define ocp_force_power_on(x) (void)(x)
+#endif
+
+/* Register/Unregister an OCP driver */
+extern int ocp_register_driver(struct ocp_driver *drv);
+extern void ocp_unregister_driver(struct ocp_driver *drv);
+
+/* Build list of devices */
+extern int ocp_early_init(void) __init;
+
+/* Find a device by index */
+extern struct ocp_device *ocp_find_device(unsigned int vendor, unsigned int function, int index);
+
+/* Get a def by index */
+extern struct ocp_def *ocp_get_one_device(unsigned int vendor, unsigned int function, int index);
+
+/* Add a device by index */
+extern int ocp_add_one_device(struct ocp_def *def);
+
+/* Remove a device by index */
+extern int ocp_remove_one_device(unsigned int vendor, unsigned int function, int index);
+
+/* Iterate over devices and execute a routine */
+extern void ocp_for_each_device(void(*callback)(struct ocp_device *, void *arg), void *arg);
+
+/* Sysfs support */
+#define OCP_SYSFS_ADDTL(type, format, name, field) \
+static ssize_t \
+show_##name##_##field(struct device *dev, char *buf) \
+{ \
+ struct ocp_device *odev = to_ocp_dev(dev); \
+ type *add = odev->def->additions; \
+ \
+ return sprintf(buf, format, add->field); \
+} \
+static DEVICE_ATTR(name##_##field, S_IRUGO, show_##name##_##field, NULL);
+
+#ifdef CONFIG_IBM_OCP
+#include <asm/ibm_ocp.h>
+#endif
+
+#ifdef CONFIG_FSL_OCP
+#include <asm/fsl_ocp.h>
+#endif
+
+#endif /* CONFIG_PPC_OCP */
+#endif /* __OCP_H__ */
+#endif /* __KERNEL__ */