109 lines
3.7 KiB
C
109 lines
3.7 KiB
C
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/*
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* Copyright (C) 2003-2004 Giuseppe Cavallaro (peppe.cavallaro@st.com)
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*
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* May be copied or modified under the terms of the GNU General Public
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* License. See linux/COPYING for more information.
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*/
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#include <linux/ioctl.h>
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#include <linux/platform_device.h>
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#include <asm/addrspace.h>
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#define MEGA (1024 * 1024)
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typedef unsigned long kaddr_t;
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/* IOCTL parameters */
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typedef struct {
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char name[16]; /* coprocessor name */
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u_int flags; /* control flags */
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/* Coprocessor region: */
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kaddr_t ram_start; /* Host effective address */
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u_int ram_size; /* region size (in bytes) */
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kaddr_t cp_ram_start; /* coprocessor effective address */
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} cop_properties_t;
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#define ST_IOCTL_BASE 'l'
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#define STCOP_GRANT _IOR(ST_IOCTL_BASE, 0, u_int)
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#define STCOP_RESET _IOR(ST_IOCTL_BASE, 1, u_int)
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#define STCOP_START STCOP_GRANT
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#define STCOP_PEEK _IOR(ST_IOCTL_BASE, 2, void*)
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#define STCOP_POKE _IOW(ST_IOCTL_BASE, 3, void*)
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#define STCOP_GET_PROPERTIES _IOR(ST_IOCTL_BASE, 4, cop_properties_t*)
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#define STCOP_SET_PROPERTIES _IOW(ST_IOCTL_BASE, 5, cop_properties_t*)
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#define NO_DATA 0xdeadbeef
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#define UNDEFINED_DATA NO_DATA
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/* ---------------------------------------------------------------------------
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* Generic macros
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* ------------------------------------------------------------------------ */
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#define xstring(x) string(x)
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#define string(x) #x
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#define plname(x) x
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#define make_pname(x,y) x ## y
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#define MEGA (1024 * 1024)
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#define COPROCESSOR_MAJOR 63
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#define FILE_2_COP(c,f) (&(c)[MINOR((f)->f_dentry->d_inode->i_rdev)])
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#define OUT_PORT 2 /* Mailbox host --> cop. port */
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#define IN_PORT 3 /* Mailbox cop. --> host port */
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#define poke_l(v,a) *((u_int *)(a)) = (v)
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#define peek_l(a) *((u_int *)(a))
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#define COPR_ADDR(cop, off) ( (cop)->ram_offset + (off))
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#define HOST_ADDR(cop, off) ( (cop)->vma_address + (off))
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#ifdef CONFIG_COPROCESSOR_DEBUG
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#define DPRINTK(args...) printk(args)
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#else
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#define DPRINTK(args...)
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#endif
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#define __debug(a, b) _debug(a, b)
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/* ---------------------------------------------------------------------------
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* Local types
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* ------------------------------------------------------------------------ */
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#define COPROC_SPACE_ALLOCATE 0x0001 /* coprocessor RAM has been defined */
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#define COPROC_IN_USE 0x0002 /* copr. device has been opened */
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#define COPROC_RUNNING 0x0004 /* coproc. is running (ioctl GRANT) */
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typedef struct {
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u_int control; /* see flags above (driver control) */
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/*
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* The base address of coprocessor region, both sides: host (ST40)
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* and slave (ST231, LX,...) are build based on offset and start addr.
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*/
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u_long ram_offset; /* Coprocessor RAM offset (in bytes)*/
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u_int ram_size; /* Coprocessor RAM size (in bytes) */
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u_long vma_address; /* The remap phisycal memory */
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#ifdef CONFIG_COPROCESSOR_DEBUG
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u_int h2c_port; /* comm. port: host --> coproc. */
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u_int c2h_port; /* comm. port: host <-- coproc. */
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#endif
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u_int irq; /* interrup used... if any */
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u_long mbox_wait; /* CPU signature (waiting for boot) */
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u_long mbox_entryp; /* where to put the entry point... */
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u_long mbox_enable; /* ... to trigger the CPU start */
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struct platform_device pdev;
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struct device *dev;
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} coproc_t;
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struct coproc_board_info {
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char *name;
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int max_coprs;
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};
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extern int coproc_cpu_open(coproc_t *);
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extern int coproc_cpu_init(coproc_t *);
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extern int coproc_cpu_grant(coproc_t *, unsigned long);
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extern int coproc_cpu_release(coproc_t *);
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extern int coproc_cpu_reset(coproc_t *);
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extern int coproc_check_area(u_long, u_long, int, coproc_t *);
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extern void coproc_proc_other_info(coproc_t *, struct seq_file *);
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