Linux-2.6.12-rc2v2.6.12-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!

1 files changed, 190 insertions, 0 deletions

diff --git a/drivers/ieee1394/highlevel.h b/drivers/ieee1394/highlevel.h
new file mode 100644
index 000000000000..e119fb87e5b5
--- /dev/null
+++ b/drivers/ieee1394/highlevel.h
@@ -0,0 +1,190 @@
+
+#ifndef IEEE1394_HIGHLEVEL_H
+#define IEEE1394_HIGHLEVEL_H
+
+
+struct hpsb_address_serve {
+        struct list_head host_list; /* per host list */
+
+        struct list_head hl_list; /* hpsb_highlevel list */
+
+        struct hpsb_address_ops *op;
+
+        struct hpsb_host *host;
+
+        /* first address handled and first address behind, quadlet aligned */
+        u64 start, end;
+};
+
+
+/*
+ * The above structs are internal to highlevel driver handling.  Only the
+ * following structures are of interest to actual highlevel drivers.
+ */
+
+struct hpsb_highlevel {
+        struct module *owner;
+        const char *name;
+
+        /* Any of the following pointers can legally be NULL, except for
+         * iso_receive which can only be NULL when you don't request
+         * channels. */
+
+        /* New host initialized.  Will also be called during
+         * hpsb_register_highlevel for all hosts already installed. */
+        void (*add_host) (struct hpsb_host *host);
+
+        /* Host about to be removed.  Will also be called during
+         * hpsb_unregister_highlevel once for each host. */
+        void (*remove_host) (struct hpsb_host *host);
+
+        /* Host experienced bus reset with possible configuration changes.
+         * Note that this one may occur during interrupt/bottom half handling.
+         * You can not expect to be able to do stock hpsb_reads. */
+        void (*host_reset) (struct hpsb_host *host);
+
+        /* An isochronous packet was received.  Channel contains the channel
+         * number for your convenience, it is also contained in the included
+         * packet header (first quadlet, CRCs are missing).  You may get called
+         * for channel/host combinations you did not request. */
+        void (*iso_receive) (struct hpsb_host *host, int channel,
+                             quadlet_t *data, size_t length);
+
+        /* A write request was received on either the FCP_COMMAND (direction =
+         * 0) or the FCP_RESPONSE (direction = 1) register.  The cts arg
+         * contains the cts field (first byte of data). */
+        void (*fcp_request) (struct hpsb_host *host, int nodeid, int direction,
+                             int cts, u8 *data, size_t length);
+
+        /* These are initialized by the subsystem when the
+         * hpsb_higlevel is registered. */
+        struct list_head hl_list;
+        struct list_head irq_list;
+        struct list_head addr_list;
+
+        struct list_head host_info_list;
+        rwlock_t host_info_lock;
+};
+
+struct hpsb_address_ops {
+        /*
+         * Null function pointers will make the respective operation complete
+         * with RCODE_TYPE_ERROR.  Makes for easy to implement read-only
+         * registers (just leave everything but read NULL).
+         *
+         * All functions shall return appropriate IEEE 1394 rcodes.
+         */
+
+        /* These functions have to implement block reads for themselves. */
+        /* These functions either return a response code
+           or a negative number. In the first case a response will be generated; in the
+           later case, no response will be sent and the driver, that handled the request
+           will send the response itself
+        */
+        int (*read) (struct hpsb_host *host, int nodeid, quadlet_t *buffer,
+                     u64 addr, size_t length, u16 flags);
+        int (*write) (struct hpsb_host *host, int nodeid, int destid,
+                      quadlet_t *data, u64 addr, size_t length, u16 flags);
+
+        /* Lock transactions: write results of ext_tcode operation into
+         * *store. */
+        int (*lock) (struct hpsb_host *host, int nodeid, quadlet_t *store,
+                     u64 addr, quadlet_t data, quadlet_t arg, int ext_tcode, u16 flags);
+        int (*lock64) (struct hpsb_host *host, int nodeid, octlet_t *store,
+                       u64 addr, octlet_t data, octlet_t arg, int ext_tcode, u16 flags);
+};
+
+
+void highlevel_add_host(struct hpsb_host *host);
+void highlevel_remove_host(struct hpsb_host *host);
+void highlevel_host_reset(struct hpsb_host *host);
+
+
+/* these functions are called to handle transactions. They are called, when
+   a packet arrives. The flags argument contains the second word of the first header
+   quadlet of the incoming packet (containing transaction label, retry code,
+   transaction code and priority). These functions either return a response code
+   or a negative number. In the first case a response will be generated; in the
+   later case, no response will be sent and the driver, that handled the request
+   will send the response itself.
+*/
+int highlevel_read(struct hpsb_host *host, int nodeid, void *data,
+                   u64 addr, unsigned int length, u16 flags);
+int highlevel_write(struct hpsb_host *host, int nodeid, int destid,
+                    void *data, u64 addr, unsigned int length, u16 flags);
+int highlevel_lock(struct hpsb_host *host, int nodeid, quadlet_t *store,
+                   u64 addr, quadlet_t data, quadlet_t arg, int ext_tcode, u16 flags);
+int highlevel_lock64(struct hpsb_host *host, int nodeid, octlet_t *store,
+                     u64 addr, octlet_t data, octlet_t arg, int ext_tcode, u16 flags);
+
+void highlevel_iso_receive(struct hpsb_host *host, void *data,
+                           size_t length);
+void highlevel_fcp_request(struct hpsb_host *host, int nodeid, int direction,
+                           void *data, size_t length);
+
+
+/*
+ * Register highlevel driver.  The name pointer has to stay valid at all times
+ * because the string is not copied.
+ */
+void hpsb_register_highlevel(struct hpsb_highlevel *hl);
+void hpsb_unregister_highlevel(struct hpsb_highlevel *hl);
+
+/*
+ * Register handlers for host address spaces.  Start and end are 48 bit pointers
+ * and have to be quadlet aligned (end points to the first address behind the
+ * handled addresses.  This function can be called multiple times for a single
+ * hpsb_highlevel to implement sparse register sets.  The requested region must
+ * not overlap any previously allocated region, otherwise registering will fail.
+ *
+ * It returns true for successful allocation.  There is no unregister function,
+ * all address spaces are deallocated together with the hpsb_highlevel.
+ */
+u64 hpsb_allocate_and_register_addrspace(struct hpsb_highlevel *hl,
+                                         struct hpsb_host *host,
+                                         struct hpsb_address_ops *ops,
+                                         u64 size, u64 alignment,
+                                         u64 start, u64 end);
+int hpsb_register_addrspace(struct hpsb_highlevel *hl, struct hpsb_host *host,
+                            struct hpsb_address_ops *ops, u64 start, u64 end);
+
+int hpsb_unregister_addrspace(struct hpsb_highlevel *hl, struct hpsb_host *host,
+                              u64 start);
+
+/*
+ * Enable or disable receving a certain isochronous channel through the
+ * iso_receive op.
+ */
+int hpsb_listen_channel(struct hpsb_highlevel *hl, struct hpsb_host *host,
+                         unsigned int channel);
+void hpsb_unlisten_channel(struct hpsb_highlevel *hl, struct hpsb_host *host,
+                           unsigned int channel);
+
+
+/* Retrieve a hostinfo pointer bound to this driver/host */
+void *hpsb_get_hostinfo(struct hpsb_highlevel *hl, struct hpsb_host *host);
+
+/* Allocate a hostinfo pointer of data_size bound to this driver/host */
+void *hpsb_create_hostinfo(struct hpsb_highlevel *hl, struct hpsb_host *host,
+                           size_t data_size);
+
+/* Free and remove the hostinfo pointer bound to this driver/host */
+void hpsb_destroy_hostinfo(struct hpsb_highlevel *hl, struct hpsb_host *host);
+
+/* Set an alternate lookup key for the hostinfo bound to this driver/host */
+void hpsb_set_hostinfo_key(struct hpsb_highlevel *hl, struct hpsb_host *host, unsigned long key);
+
+/* Retrieve the alternate lookup key for the hostinfo bound to this driver/host */
+unsigned long hpsb_get_hostinfo_key(struct hpsb_highlevel *hl, struct hpsb_host *host);
+
+/* Retrieve a hostinfo pointer bound to this driver using its alternate key */
+void *hpsb_get_hostinfo_bykey(struct hpsb_highlevel *hl, unsigned long key);
+
+/* Set the hostinfo pointer to something useful. Usually follows a call to
+ * hpsb_create_hostinfo, where the size is 0. */
+int hpsb_set_hostinfo(struct hpsb_highlevel *hl, struct hpsb_host *host, void *data);
+
+/* Retrieve hpsb_host using a highlevel handle and a key */
+struct hpsb_host *hpsb_get_host_bykey(struct hpsb_highlevel *hl, unsigned long key);
+
+#endif /* IEEE1394_HIGHLEVEL_H */