| /* |
| * 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 |
| |
| #define DSP_FIELD_ADDR(type, field, base, wordsize) \ |
| ((((s32)&(((type *)0)->field)) / wordsize) + (u32)base) |
| |
| /* Access can be different SM access word size (e.g. 16/32 bit words) */ |
| #define IO_SET_VALUE(context, type, base, field, value) (base->field = value) |
| #define IO_GET_VALUE(context, type, base, field) (base->field) |
| #define IO_OR_VALUE(context, type, base, field, value) (base->field |= value) |
| #define IO_AND_VALUE(context, type, base, field, value) (base->field &= value) |
| #define IO_SET_LONG(context, type, base, field, value) (base->field = value) |
| #define IO_GET_LONG(context, type, base, field) (base->field) |
| |
| #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(OUT 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, OUT 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, |
| OUT 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, |
| OUT 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_intr_dsp2(struct io_mgr *pio_mgr, u16 mb_val); |
| |
| 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_ */ |