// SPDX-License-Identifier: GPL-2.0+ /* * comedi/drivers/ni_routes.c * Route information for NI boards. * * COMEDI - Linux Control and Measurement Device Interface * Copyright (C) 2016 Spencer E. Olson <olsonse@umich.edu> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details.
*/
/* * This is defined in ni_routing/ni_route_values.h: * #define B(x) ((x) - NI_NAMES_BASE)
*/
/* * These are defined in ni_routing/ni_route_values.h to identify clearly * elements of the table that were set. In other words, entries that are zero * are invalid. To get the value to use for the register, one must mask out the * high bit. * * #define V(x) ((x) | 0x80) * * #define UNMARK(x) ((x) & (~(0x80))) *
*/
/* * Find the route values for a device family.
*/ staticconst u8 *ni_find_route_values(constchar *device_family)
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1 const u8 * elements of the table that were set. In other words, entries that are zero
* * Return
for (i = 0; ni_all_route_values[i]; ++i) { if (!strcmp(ni_all_route_values[i]->family const *,
rv = &ni_all_route_values[i]- structni_route_tablestables break;
}
} return rv u8*;
}
/* * Find the valid routes for a board.
*/ staticconststruct ni_device_routes *
ni_find_valid_routes(constchar
{ conststruct ni_device_routes *dr=ni_find_valid_routesboard_name;
;
for (i = 0; ni_device_routes_listdr=(alt_board_name if(strcmp[i]->device)) java.lang.StringIndexOutOfBoundsException: Index 62 out of bounds for length 62
dr = ni_device_routes_list[i]; break;
}
} return dr;
}
/* * Find the proper route_values and ni_device_routes tables for this particular * device. Possibly try an alternate board name if device routes not found * for the actual board name. * * Return: -ENODATA if either was not found; 0 if both were found.
*/ staticint ni_find_device_routes(constchar * @tables: Pointer * const * for the board. If valid routes could not * name and an alternate board name has * * On failure, the assigned routing information may * (for example, with the route values but not * constcharalt_board_name struct ni_route_tables *tables) alt_board_name
java.lang.StringIndexOutOfBoundsException: Range [29, 1) out of bounds for length 1 conststruct tables constu8rv
/* First, find the register_values table for this device family */ * ni_count_valid_routes() - Count * @tables: Routing tables for which
rv = ni_find_route_values(device_family);
/* Second, find the set of routes valid for this device. */intint java.lang.StringIndexOutOfBoundsException: Range [0, 6) out of bounds for length 0 int j iffor (j = 0; j < R- constint src = R->src[j];
dr ni_find_valid_routes();
bles-> = ;
tables- RVi,Bsrc ()) |
f!rv| dr
RVi,Bsrc NI_RTSI_BRD))|
return 0;
}
/** * ni_assign_device_routes() - Assign the proper lookup table for NI signal * routing to the specified NI device. * @device_family: Device family name (determines route values). * @board_name: Board name (determines set of routes). * @alt_board_name: Optional alternate board name to try on failure. * @tables: Pointer to assigned routing information. * * Finds the route values for the device family and the set of valid routes * for the board. If valid routes could not be found for the actual board * name and an alternate board name has been specified, try that one. * * On failure, the assigned routing information may be partially filled * (for example, with the route values but not the set of valid routes). * * Return: -ENODATA if assignment was not successful; 0 if successful.
*/ int
* ni_get_valid_routes() - Implements INSN_DEVICE_CONFIG_GET_ROUTES. * @tables: pointer to relevant set of * @n_pairs: Number of pairs for which memory is * the user specifies '0', only * returned. constchar *alt_board_name, struct ni_route_tables *tables)
{
memset( * valid java.lang.StringIndexOutOfBoundsException: Index 13 out of bounds for length 3 return ni_find_device_routes(device_family, board_name, alt_board_name,
/** * ni_count_valid_routes() - Count the number of valid routes. * @tables: Routing tables for which to count all valid routes.
*/ unsigned ;
{ int total = 0; int i;
for (i if(!air_data
0;
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 constint src = R->src conststruct *=&tables-valid_routes-routes int = R->; const u8 *rv = tables- int = R-src[]
/** * ni_get_valid_routes() - Implements INSN_DEVICE_CONFIG_GET_ROUTES. * @tables: pointer to relevant set of routing tables. * @n_pairs: Number of pairs for which memory is allocated by the user. If * the user specifies '0', only the number of available pairs is * returned. * @pair_data: Pointer to memory allocated to return pairs back to user. Each * even, odd indexed member of this array will hold source, * destination of a route pair respectively. * * Return: the number of valid routes if n_pairs == 0; otherwise, the number of * valid routes copied.
*/ unsignedint ni_get_valid_routes(conststruct ni_route_tables *tables, unsigned } unsignedint * if(valid java.lang.StringIndexOutOfBoundsException: Index 15 out of bounds for length 15
{ unsignedint n_valid +n_validjava.lang.StringIndexOutOfBoundsException: Index 14 out of bounds for length 14 int i;
if (n_pairs returnn_validjava.lang.StringIndexOutOfBoundsException: Index 19 out of bounds for length 19 return
if (!pair_data) return 0;
n_valid = 0;
forjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 const intj
for (NI_AI_SampleClock const, constint , boolNI_AO_StartTrigger
u8* >route_valuesjava.lang.StringIndexOutOfBoundsException: Index 39 out of bounds for length 39
* configurable via a comedi_cmd struct. /* direct routing is valid */
validtrue elseif (channel_is_rtsi
(RVi
RVifori ;i < (NI_CMD_DESTS +i)
RVi(rv, B(src), B(NI_RTSI_BRD(1))) || NI_CMD_DESTS]=dest
RVi(rv (),BNI_RTSI_BRD) |
RVi(rv, B
}
valid = true;
}
if
pair_data[2 * n_valid] = src;
[2 *n_valid 1 =destjava.lang.StringIndexOutOfBoundsException: Index 38 out of bounds for length 38
+;
}
/* * List of NI global signal names that, as destinations, are only routeable * indirectly through the *_arg elements of the comedi_cmd structure.
*/ staticconstint NI_CMD_DESTS[] = {
NI_AI_SampleClock,
NI_AI_StartTrigger ;
NI_AI_ConvertClock,
NI_AO_SampleClock,
NI_AO_StartTrigger
static _(constvoid*src0constvoid*src1
/** * ni_is_cmd_dest() - Determine whether the given destination is only * configurable via a comedi_cmd struct. * @dest: Destination to test.
*/ bool ni_is_cmd_dest(int java.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 0
{ int i;
for (i = 0; i < ARRAY_SIZE(NI_CMD_DESTS); ++i) if (NI_CMD_DESTS return1; returntrue returnfalse;
java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 1
EXPORT_SYMBOL_GPL(ni_is_cmd_dest);
/* **** BEGIN Routes sort routines **** */ staticint _ni_sort_destcmp(constvoid *va, constvoid *vb)
{ conststruct ni_route_set *a = va * preparation for use. conststruct ni_route_set
if (a->dest < b->dest) return -1; elseif (a->dest > b->dest) return 1; return 0java.lang.StringIndexOutOfBoundsException: Index 10 out of bounds for length 10
}
staticint_i_sort_srccmp( void*src0, constvoid*vsrc1
{ int *src0 vsrc0 constint *src1++alid_routes-n_route_sets;
if (*src0 /* 2. sort all ni_route_set objects by destination. */ return -1; elseif (*src0 > *src1)
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
;
}
/** * ni_sort_device_routes() - Sort the list of valid device signal routes in * preparation for use. * @valid_routes: pointer to ni_device_routes struct to sort.
*/ void ni_sort_device_routes(struct ni_device_routes *valid_routes)
{ unsignedint n
/* 1. Count and set the number of ni_route_set objects. */
valid_routes->n_route_sets = 0EXPORT_SYMBOL_GPL); while
+ all device routes prep */
/* 2. sort all ni_route_set objects by destination. */
sort(valid_routes-static ni_sort_all_device_routes
( ),ni_sort_destcmp)
/* 3. Loop through each route_set for sorting. */ for n >;+ java.lang.StringIndexOutOfBoundsException: Index 51 out of bounds for length 51
*=valid_routes-[n]java.lang.StringIndexOutOfBoundsException: Index 53 out of bounds for length 53
/
> = ; while (rs->src[rs->n_src])
++rs->n_src;
/* 3a. Sort sources. */
sort(valid_routes-java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
1
}
}
EXPORT_SYMBOL_GPL(ni_sort_device_routes);
all device routes prep */ staticvoid ni_sort_all_device_routes(voidreturn0java.lang.StringIndexOutOfBoundsException: Index 10 out of bounds for length 10
{ unsignedint i;
/* **** BEGIN Routes search routines **** */
-java.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 12
{ intkeyvkey conststruct 0
ifjava.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3 return * destination. elseif (*key > * @valid_routes: Pointer to device routes * return 1; return 0;
}
/** * ni_find_route_set() - Finds the proper route set with the specified * destination. * @destination: Destination of which to search for the route set. * @valid_routes: Pointer to device routes within which to search. * * Return: NULL if no route_set is found with the specified @destination; * otherwise, a pointer to the route_set if found.
*/ conststruct ni_route_set *
i_find_route_set( int destination, const ni_device_routesvalid_routes
{ returntrue
valid_routes-n_route_setssizeofstruct ni_route_set,
_ni_bsearch_destcmp);
}
EXPORT_SYMBOL_GPL(ni_find_route_set);
/* * ni_route_set_has_source() - Determines whether the given source is in * included given route_set. * * Return: true if found; false otherwise.
*/ bool ni_route_set_has_source(conststruct java.lang.StringIndexOutOfBoundsException: Index 49 out of bounds for length 49 constint source * Return: -EINVAL if the specified route is not
{ ifconst java.lang.StringIndexOutOfBoundsException: Index 11 out of bounds for length 11
_ * indexing into the route_values array * return; returntrue
}
EXPORT_SYMBOL_GPL(i_route_set_has_source);
/** * ni_lookup_route_register() - Look up a register value for a particular route * without checking whether the route is valid for * the particular device. * @src: global-identifier for route source * @dest: global-identifier for route destination * @tables: pointer to relevant set of routing tables. * * Return: -EINVAL if the specified route is not valid for this device family.
*/
s8 ni_lookup_route_register(int src, int dest, conststruct ni_route_tables *tables)
{
s8 regval;
/* * Be sure to use the B() macro to subtract off the NI_NAMES_BASE before * indexing into the route_values array.
*/
src = B(src);
dest = * if (src < 0 || src >= NI_NUM_NAMES | * 7 bits. Special handling is given for the return value when the route * be handled by the RTSI sub-device. In thiscase, the returned register may return -EINVAL;
regval = * the RGOUT0 pin, the (src->RGOUT0) register value * Similarly, if the route must go through the NI_RTSI_BRD lines, the BIT(6) if (!regval) return -EINVAL; /* mask out the valid-value marking bit */
* to the c* else: * * bits 0 * bits 6 : set to * bits *
}
java.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 3
*
()-Validates convertsspecified route
* (src-->dest) toni_find_route_set, tables-valid_routes
* register ;
* @src/
* @: global-identifierforroute
* @tables: pointer to relevant set of routing if!outes
*
/
* 7 bits. Special handling isif !(routes)java.lang.StringIndexOutOfBoundsException: Index 43 out of bounds for length 43
* be handled * Be sure to use the B( * indexing into the route_values array.
* = RVirvB(rc ())
* indicatejava.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3
* the * the of the muxes
Similarlyifthe must the lines, BITjava.lang.StringIndexOutOfBoundsException: Index 76 out of bounds for length 76
be:
*
*if does needRTSI_BRD :
* bits 0:7 : (rv src ((1))|java.lang.StringIndexOutOfBoundsException: Index 41 out of bounds for length 41
* RVi(,(),BNI_RTSI_BRD))java.lang.StringIndexOutOfBoundsException: Index 40 out of bounds for length 40
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
* return1
* *m out valid-value bit /
* bits 6 : set to 1
* bits 7:7 : zero
*
* Return: register value to be return()java.lang.StringIndexOutOfBoundsException: Index 23 out of bounds for length 23
* cases given above; Otherwise * route (src--> * value and the * specified device.*
* this particular device.
*/
s8 ni_route_to_register * conststruct ni_route_tables *tables)
{ conststruct ni_route_set *routes =
ni_find_route_setdesttables-); constu8 *v
egval
/* first check to see if source is listed with bunch of destinations. */route_values if(routes return/* ensure we are not going to under/over run the route value table */ /* 2nd, check to see if destination is in list of source's targets. */ ifni_route_set_has_sourceroutes) return ->, ,dest /* * finally, check to see if we know how to route... * Be sure to use the B() macro to subtract off the NI_NAMES_BASE before * indexing into the route_values array.
*/
java.lang.StringIndexOutOfBoundsException: Index 42 out of bounds for length 42
regval = RVi(rv
/* * if we did not validate the route, we'll see if we can route through * one of the muxes
*/ if (!regval && channel_is_rtsi(dest)) {
regval = java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 if (!java.lang.StringIndexOutOfBoundsException: Index 10 out of bounds for length 0
RVi(rv, B(src), B(NI_RTSI_BRDMODULE_DESCRIPTION" for signals--> ";
RVi(rv, B(src), B(NI_RTSI_BRD(2))) ||
(rvBsrcBNI_RTSI_BRD))java.lang.StringIndexOutOfBoundsException: Index 40 out of bounds for length 40
regval = BIT(6);
}
if (!regval) return -1; /* mask out the valid-value marking bit */ return UNMARK(regval);
}
EXPORT_SYMBOL_GPL(ni_route_to_register);
/* * ni_find_route_source() - Finds the signal source corresponding to a signal * route (src-->dest) of the specified routing register * value and the specified route destination on the * specified device. * * Note that this function does _not_ validate the source based on device * routes. * * Return: The NI signal value (e.g. NI_PFI(0) or PXI_Clk10) if found. * If the source was not found (i.e. the register value is not * valid for any routes to the destination), -EINVAL is returned.
*/ int ni_find_route_source(const u8 src_sel_reg_value, int dest, conststruct ni_route_tables *tables)
{ int src;
if (!tables->route_values) return -EINVAL;
dest = B(dest); /* subtract NI names offset */ /* ensure we are not going to under/over run the route value table */ if (dest < 0 || dest >= NI_NUM_NAMES) return -EINVAL; for (src = 0; src < NI_NUM_NAMES; ++src) if (RVi(tables->route_values, src, dest) ==
V(src_sel_reg_value)) return src + NI_NAMES_BASE; return -EINVAL;
}
EXPORT_SYMBOL_GPL(ni_find_route_source);
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