[PATCH] CRIS update: I/O and DMA allocator

Added I/O and DMA allocators to be used by drivers.

Signed-off-by: Mikael Starvik <starvik@axis.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

3 files changed, 104 insertions, 0 deletions

diff --git a/include/asm-cris/arch-v10/dma.h b/include/asm-cris/arch-v10/dma.h
index 9e078b9bc93..ecb9dba6fa4 100644
--- a/include/asm-cris/arch-v10/dma.h
+++ b/include/asm-cris/arch-v10/dma.h
@@ -44,3 +44,31 @@
 #define USB_RX_DMA_NBR 9
 
 #endif
+
+enum dma_owner
+{
+  dma_eth,
+  dma_ser0,
+  dma_ser1, /* Async and sync */
+  dma_ser2,
+  dma_ser3, /* Async and sync */
+  dma_ata,
+  dma_par0,
+  dma_par1,
+  dma_ext0,
+  dma_ext1,
+  dma_int6,
+  dma_int7,
+  dma_usb,
+  dma_scsi0,
+  dma_scsi1
+};
+
+/* Masks used by cris_request_dma options: */
+#define DMA_VERBOSE_ON_ERROR    (1<<0)
+#define DMA_PANIC_ON_ERROR     ((1<<1)|DMA_VERBOSE_ON_ERROR)
+
+int cris_request_dma(unsigned int dmanr, const char * device_id,
+                     unsigned options, enum dma_owner owner);
+
+void cris_free_dma(unsigned int dmanr, const char * device_id);
diff --git a/include/asm-cris/arch-v10/io.h b/include/asm-cris/arch-v10/io.h
index 0bc38a0313c..dd39198ec67 100644
--- a/include/asm-cris/arch-v10/io.h
+++ b/include/asm-cris/arch-v10/io.h
@@ -6,6 +6,7 @@
 
 /* Etrax shadow registers - which live in arch/cris/kernel/shadows.c */
 
+extern unsigned long gen_config_ii_shadow;
 extern unsigned long port_g_data_shadow;
 extern unsigned char port_pa_dir_shadow;
 extern unsigned char port_pa_data_shadow;
diff --git a/include/asm-cris/arch-v10/io_interface_mux.h b/include/asm-cris/arch-v10/io_interface_mux.h
new file mode 100644
index 00000000000..d9250008088
--- /dev/null
+++ b/include/asm-cris/arch-v10/io_interface_mux.h
@@ -0,0 +1,75 @@
+/* IO interface mux allocator for ETRAX100LX.
+ * Copyright 2004, Axis Communications AB
+ * $Id: io_interface_mux.h,v 1.1 2004/12/13 12:21:53 starvik Exp $
+ */
+
+
+#ifndef _IO_INTERFACE_MUX_H
+#define _IO_INTERFACE_MUX_H
+
+
+/* C.f. ETRAX100LX Designer's Reference 20.9 */
+
+/* The order in enum must match the order of interfaces[] in
+ * io_interface_mux.c */
+enum cris_io_interface {
+        /* Begin Non-multiplexed interfaces */
+        if_eth = 0,
+        if_serial_0,
+        /* End Non-multiplexed interfaces */
+        if_serial_1,
+        if_serial_2,
+        if_serial_3,
+        if_sync_serial_1,
+        if_sync_serial_3,
+        if_shared_ram,
+        if_shared_ram_w,
+        if_par_0,
+        if_par_1,
+        if_par_w,
+        if_scsi8_0,
+        if_scsi8_1,
+        if_scsi_w,
+        if_ata,
+        if_csp,
+        if_i2c,
+        if_usb_1,
+        if_usb_2,
+        /* GPIO pins */
+        if_gpio_grp_a,
+        if_gpio_grp_b,
+        if_gpio_grp_c,
+        if_gpio_grp_d,
+        if_gpio_grp_e,
+        if_gpio_grp_f,
+        if_max_interfaces,
+        if_unclaimed
+};
+
+int cris_request_io_interface(enum cris_io_interface ioif, const char *device_id);
+
+void cris_free_io_interface(enum cris_io_interface ioif);
+
+/* port can be 'a', 'b' or 'g' */
+int cris_io_interface_allocate_pins(const enum cris_io_interface ioif,
+                                    const char port,
+                                    const unsigned start_bit,
+                                    const unsigned stop_bit);
+
+/* port can be 'a', 'b' or 'g' */
+int cris_io_interface_free_pins(const enum cris_io_interface ioif,
+                                const char port,
+                                const unsigned start_bit,
+                                const unsigned stop_bit);
+
+int cris_io_interface_register_watcher(void (*notify)(const unsigned int gpio_in_available,
+                                                      const unsigned int gpio_out_available,
+                                                      const unsigned char pa_available,
+                                                      const unsigned char pb_available));
+
+void cris_io_interface_delete_watcher(void (*notify)(const unsigned int gpio_in_available,
+                                                     const unsigned int gpio_out_available,
+                                                     const unsigned char pa_available,
+                                                     const unsigned char pb_available));
+
+#endif /* _IO_INTERFACE_MUX_H */