| /* |
| * io_sm.h |
| * |
| * DSP-BIOS Bridge driver support functions for TI OMAP processors. |
| * |
| * IO dispatcher for a shared memory channel driver. |
| * Also, includes macros to simulate shm via port io calls. |
| * |
| * Copyright (C) 2005-2006 Texas Instruments, Inc. |
| * |
| * This package is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| * |
| * THIS PACKAGE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR |
| * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED |
| * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. |
| */ |
| |
| #ifndef IOSM_ |
| #define IOSM_ |
| |
| #include <dspbridge/_chnl_sm.h> |
| #include <dspbridge/host_os.h> |
| |
| #include <dspbridge/io.h> |
| #include <dspbridge/mbx_sh.h> /* shared mailbox codes */ |
| |
| /* Magic code used to determine if DSP signaled exception. */ |
| #define DEH_BASE MBX_DEH_BASE |
| #define DEH_LIMIT MBX_DEH_LIMIT |
| |
| #define IO_INPUT 0 |
| #define IO_OUTPUT 1 |
| #define IO_SERVICE 2 |
| |
| #ifdef CONFIG_TIDSPBRIDGE_DVFS |
| /* The maximum number of OPPs that are supported */ |
| extern s32 dsp_max_opps; |
| /* The Vdd1 opp table information */ |
| extern u32 vdd1_dsp_freq[6][4]; |
| #endif |
| |
| /* |
| * ======== io_cancel_chnl ======== |
| * Purpose: |
| * Cancel IO on a given channel. |
| * Parameters: |
| * hio_mgr: IO Manager. |
| * chnl: Index of channel to cancel IO on. |
| * Returns: |
| * Requires: |
| * Valid hio_mgr. |
| * Ensures: |
| */ |
| extern void io_cancel_chnl(struct io_mgr *hio_mgr, u32 chnl); |
| |
| /* |
| * ======== io_dpc ======== |
| * Purpose: |
| * Deferred procedure call for shared memory channel driver ISR. Carries |
| * out the dispatch of I/O. |
| * Parameters: |
| * ref_data: Pointer to reference data registered via a call to |
| * DPC_Create(). |
| * Returns: |
| * Requires: |
| * Must not block. |
| * Must not acquire resources. |
| * All data touched must be locked in memory if running in kernel mode. |
| * Ensures: |
| * Non-preemptible (but interruptible). |
| */ |
| extern void io_dpc(unsigned long ref_data); |
| |
| /* |
| * ======== io_mbox_msg ======== |
| * Purpose: |
| * Main message handler for the shared memory Bridge channel manager. |
| * Determine if this message is ours, then schedules a DPC to |
| * dispatch I/O. |
| * Parameters: |
| * self: Pointer to its own notifier_block struct. |
| * len: Length of message. |
| * msg: Message code received. |
| * Returns: |
| * NOTIFY_OK if handled; NOTIFY_BAD otherwise. |
| */ |
| int io_mbox_msg(struct notifier_block *self, unsigned long len, void *msg); |
| |
| /* |
| * ======== io_request_chnl ======== |
| * Purpose: |
| * Request I/O from the DSP. Sets flags in shared memory, then interrupts |
| * the DSP. |
| * Parameters: |
| * hio_mgr: IO manager handle. |
| * pchnl: Ptr to the channel requesting I/O. |
| * io_mode: Mode of channel: {IO_INPUT | IO_OUTPUT}. |
| * Returns: |
| * Requires: |
| * pchnl != NULL |
| * Ensures: |
| */ |
| extern void io_request_chnl(struct io_mgr *io_manager, |
| struct chnl_object *pchnl, |
| u8 io_mode, u16 *mbx_val); |
| |
| /* |
| * ======== iosm_schedule ======== |
| * Purpose: |
| * Schedule DPC for IO. |
| * Parameters: |
| * pio_mgr: Ptr to a I/O manager. |
| * Returns: |
| * Requires: |
| * pchnl != NULL |
| * Ensures: |
| */ |
| extern void iosm_schedule(struct io_mgr *io_manager); |
| |
| /* |
| * ======== io_sh_msetting ======== |
| * Purpose: |
| * Sets the shared memory setting |
| * Parameters: |
| * hio_mgr: Handle to a I/O manager. |
| * desc: Shared memory type |
| * pargs: Ptr to shm setting |
| * Returns: |
| * Requires: |
| * hio_mgr != NULL |
| * pargs != NULL |
| * Ensures: |
| */ |
| extern int io_sh_msetting(struct io_mgr *hio_mgr, u8 desc, void *pargs); |
| |
| /* |
| * Misc functions for the CHNL_IO shared memory library: |
| */ |
| |
| /* Maximum channel bufsize that can be used. */ |
| extern u32 io_buf_size(struct io_mgr *hio_mgr); |
| |
| #ifdef CONFIG_TIDSPBRIDGE_BACKTRACE |
| /* |
| * ========print_dsp_trace_buffer ======== |
| * Print DSP tracebuffer. |
| */ |
| extern int print_dsp_trace_buffer(struct bridge_dev_context |
| *hbridge_context); |
| |
| int dump_dsp_stack(struct bridge_dev_context *bridge_context); |
| |
| void dump_dl_modules(struct bridge_dev_context *bridge_context); |
| |
| #endif |
| #if defined(CONFIG_TIDSPBRIDGE_BACKTRACE) || defined(CONFIG_TIDSPBRIDGE_DEBUG) |
| void print_dsp_debug_trace(struct io_mgr *hio_mgr); |
| #endif |
| |
| #endif /* IOSM_ */ |