diff options
Diffstat (limited to 'drivers/staging/tidspbridge/include/dspbridge/io_sm.h')
| -rw-r--r-- | drivers/staging/tidspbridge/include/dspbridge/io_sm.h | 298 |
1 files changed, 298 insertions, 0 deletions
diff --git a/drivers/staging/tidspbridge/include/dspbridge/io_sm.h b/drivers/staging/tidspbridge/include/dspbridge/io_sm.h new file mode 100644 index 000000000000..18aec55d8647 --- /dev/null +++ b/drivers/staging/tidspbridge/include/dspbridge/io_sm.h @@ -0,0 +1,298 @@ +/* + * 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/iodefs.h> + +#define IO_INPUT 0 +#define IO_OUTPUT 1 +#define IO_SERVICE 2 +#define IO_MAXSERVICE IO_SERVICE + +#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 interrupt handler for the shared memory Bridge channel manager. + * Calls the Bridge's chnlsm_isr to determine if this interrupt is ours, + * then schedules a DPC to dispatch I/O. + * Parameters: + * ref_data: Pointer to the channel manager object for this board. + * Set in an initial call to ISR_Install(). + * Returns: + * TRUE if interrupt handled; FALSE otherwise. + * Requires: + * Must be in locked memory if executing in kernel mode. + * Must only call functions which are in locked memory if Kernel mode. + * Must only call asynchronous services. + * Interrupts are disabled and EOI for this interrupt has been sent. + * Ensures: + */ +void io_mbox_msg(u32 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); + +/* + * DSP-DMA IO functions + */ + +/* + * ======== io_ddma_init_chnl_desc ======== + * Purpose: + * Initialize DSP DMA channel descriptor. + * Parameters: + * hio_mgr: Handle to a I/O manager. + * ddma_chnl_id: DDMA channel identifier. + * num_desc: Number of buffer descriptors(equals # of IOReqs & + * Chirps) + * dsp: Dsp address; + * Returns: + * Requires: + * ddma_chnl_id < DDMA_MAXDDMACHNLS + * num_desc > 0 + * pVa != NULL + * pDspPa != NULL + * + * Ensures: + */ +extern void io_ddma_init_chnl_desc(struct io_mgr *hio_mgr, u32 ddma_chnl_id, + u32 num_desc, void *dsp); + +/* + * ======== io_ddma_clear_chnl_desc ======== + * Purpose: + * Clear DSP DMA channel descriptor. + * Parameters: + * hio_mgr: Handle to a I/O manager. + * ddma_chnl_id: DDMA channel identifier. + * Returns: + * Requires: + * ddma_chnl_id < DDMA_MAXDDMACHNLS + * Ensures: + */ +extern void io_ddma_clear_chnl_desc(struct io_mgr *hio_mgr, u32 ddma_chnl_id); + +/* + * ======== io_ddma_request_chnl ======== + * Purpose: + * Request channel DSP-DMA from the DSP. Sets up SM descriptors and + * control fields in shared memory. + * Parameters: + * hio_mgr: Handle to a I/O manager. + * pchnl: Ptr to channel object + * chnl_packet_obj: Ptr to channel i/o request packet. + * Returns: + * Requires: + * pchnl != NULL + * pchnl->cio_reqs > 0 + * chnl_packet_obj != NULL + * Ensures: + */ +extern void io_ddma_request_chnl(struct io_mgr *hio_mgr, + struct chnl_object *pchnl, + struct chnl_irp *chnl_packet_obj, + u16 *mbx_val); + +/* + * Zero-copy IO functions + */ + +/* + * ======== io_ddzc_init_chnl_desc ======== + * Purpose: + * Initialize ZCPY channel descriptor. + * Parameters: + * hio_mgr: Handle to a I/O manager. + * zid: zero-copy channel identifier. + * Returns: + * Requires: + * ddma_chnl_id < DDMA_MAXZCPYCHNLS + * hio_mgr != Null + * Ensures: + */ +extern void io_ddzc_init_chnl_desc(struct io_mgr *hio_mgr, u32 zid); + +/* + * ======== io_ddzc_clear_chnl_desc ======== + * Purpose: + * Clear DSP ZC channel descriptor. + * Parameters: + * hio_mgr: Handle to a I/O manager. + * ch_id: ZC channel identifier. + * Returns: + * Requires: + * hio_mgr is valid + * ch_id < DDMA_MAXZCPYCHNLS + * Ensures: + */ +extern void io_ddzc_clear_chnl_desc(struct io_mgr *hio_mgr, u32 ch_id); + +/* + * ======== io_ddzc_request_chnl ======== + * Purpose: + * Request zero-copy channel transfer. Sets up SM descriptors and + * control fields in shared memory. + * Parameters: + * hio_mgr: Handle to a I/O manager. + * pchnl: Ptr to channel object + * chnl_packet_obj: Ptr to channel i/o request packet. + * Returns: + * Requires: + * pchnl != NULL + * pchnl->cio_reqs > 0 + * chnl_packet_obj != NULL + * Ensures: + */ +extern void io_ddzc_request_chnl(struct io_mgr *hio_mgr, + struct chnl_object *pchnl, + struct chnl_irp *chnl_packet_obj, + u16 *mbx_val); + +/* + * ======== 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); + +extern u32 io_read_value(struct bridge_dev_context *dev_ctxt, u32 dsp_addr); + +extern void io_write_value(struct bridge_dev_context *dev_ctxt, + u32 dsp_addr, u32 value); + +extern u32 io_read_value_long(struct bridge_dev_context *dev_ctxt, + u32 dsp_addr); + +extern void io_write_value_long(struct bridge_dev_context *dev_ctxt, + u32 dsp_addr, u32 value); + +extern void io_or_set_value(struct bridge_dev_context *dev_ctxt, + u32 dsp_addr, u32 value); + +extern void io_and_set_value(struct bridge_dev_context *dev_ctxt, + u32 dsp_addr, u32 value); + +extern void io_sm_init(void); + +#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_ */ |