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staging: comedi: add interface to ni routing table information

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Adds interface and associated unittests for accessing/looking-up/validating
the new ni routing table information.

Signed-off-by: Spencer E. Olson <olsonse@umich.edu>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Spencer E. Olson 2018-10-03 14:56:04 -06:00 committed by Greg Kroah-Hartman
parent ba932fcfee
commit 4bb90c87ab
7 changed files with 1502 additions and 1 deletions
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4
drivers/staging/comedi/Kconfig
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@ -1313,5 +1313,9 @@ config COMEDI_NI_LABPC_ISADMA
config COMEDI_NI_TIO
tristate
select COMEDI_NI_ROUTING
config COMEDI_NI_ROUTING
tristate
endif # COMEDI

27
drivers/staging/comedi/drivers/Makefile
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@ -137,6 +137,33 @@ obj-$(CONFIG_COMEDI_VMK80XX) += vmk80xx.o
obj-$(CONFIG_COMEDI_MITE) += mite.o
obj-$(CONFIG_COMEDI_NI_TIO) += ni_tio.o
obj-$(CONFIG_COMEDI_NI_TIOCMD) += ni_tiocmd.o
obj-$(CONFIG_COMEDI_NI_ROUTING) += ni_routing.o
ni_routing-objs += ni_routes.o \
ni_routing/ni_route_values.o \
ni_routing/ni_route_values/ni_660x.o \
ni_routing/ni_route_values/ni_eseries.o \
ni_routing/ni_route_values/ni_mseries.o \
ni_routing/ni_device_routes.o \
ni_routing/ni_device_routes/pxi-6030e.o \
ni_routing/ni_device_routes/pci-6070e.o \
ni_routing/ni_device_routes/pci-6220.o \
ni_routing/ni_device_routes/pci-6221.o \
ni_routing/ni_device_routes/pxi-6224.o \
ni_routing/ni_device_routes/pxi-6225.o \
ni_routing/ni_device_routes/pci-6229.o \
ni_routing/ni_device_routes/pci-6251.o \
ni_routing/ni_device_routes/pxi-6251.o \
ni_routing/ni_device_routes/pxie-6251.o \
ni_routing/ni_device_routes/pci-6254.o \
ni_routing/ni_device_routes/pci-6259.o \
ni_routing/ni_device_routes/pci-6534.o \
ni_routing/ni_device_routes/pxie-6535.o \
ni_routing/ni_device_routes/pci-6602.o \
ni_routing/ni_device_routes/pci-6713.o \
ni_routing/ni_device_routes/pci-6723.o \
ni_routing/ni_device_routes/pci-6733.o \
ni_routing/ni_device_routes/pxi-6733.o \
ni_routing/ni_device_routes/pxie-6738.o
obj-$(CONFIG_COMEDI_NI_LABPC) += ni_labpc_common.o
obj-$(CONFIG_COMEDI_NI_LABPC_ISADMA) += ni_labpc_isadma.o

523
drivers/staging/comedi/drivers/ni_routes.c Normal file
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@ -0,0 +1,523 @@
// SPDX-License-Identifier: GPL-2.0+
/* vim: set ts=8 sw=8 noet tw=80 nowrap: */
/*
* 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.
*/
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/bsearch.h>
#include <linux/sort.h>
#include "../comedi.h"
#include "ni_routes.h"
#include "ni_routing/ni_route_values.h"
#include "ni_routing/ni_device_routes.h"
/*
* 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)))
*
*/
/* Helper for accessing data. */
#define RVi(table, src, dest) ((table)[(dest) * NI_NUM_NAMES + (src)])
static const size_t route_table_size = NI_NUM_NAMES * NI_NUM_NAMES;
/*
* Find the proper route_values and ni_device_routes tables for this particular
* device.
*
* Return: -ENODATA if either was not found; 0 if both were found.
*/
static int ni_find_device_routes(const char *device_family,
const char *board_name,
struct ni_route_tables *tables)
{
const struct ni_device_routes *dr = NULL;
const u8 *rv = NULL;
int i;
/* First, find the register_values table for this device family */
for (i = 0; ni_all_route_values[i]; ++i) {
if (memcmp(ni_all_route_values[i]->family, device_family,
strnlen(device_family, 30)) == 0) {
rv = &ni_all_route_values[i]->register_values[0][0];
break;
}
}
if (!rv)
return -ENODATA;
/* Second, find the set of routes valid for this device. */
for (i = 0; ni_device_routes_list[i]; ++i) {
if (memcmp(ni_device_routes_list[i]->device, board_name,
strnlen(board_name, 30)) == 0) {
dr = ni_device_routes_list[i];
break;
}
}
if (!dr)
return -ENODATA;
tables->route_values = rv;
tables->valid_routes = dr;
return 0;
}
/**
* ni_assign_device_routes() - Assign the proper lookup table for NI signal
* routing to the specified NI device.
*
* Return: -ENODATA if assignment was not successful; 0 if successful.
*/
int ni_assign_device_routes(const char *device_family,
const char *board_name,
struct ni_route_tables *tables)
{
memset(tables, 0, sizeof(struct ni_route_tables));
return ni_find_device_routes(device_family, board_name, tables);
}
EXPORT_SYMBOL_GPL(ni_assign_device_routes);
/**
* ni_count_valid_routes() - Count the number of valid routes.
* @tables: Routing tables for which to count all valid routes.
*/
unsigned int ni_count_valid_routes(const struct ni_route_tables *tables)
{
int total = 0;
int i;
for (i = 0; i < tables->valid_routes->n_route_sets; ++i) {
const struct ni_route_set *R = &tables->valid_routes->routes[i];
int j;
for (j = 0; j < R->n_src; ++j) {
const int src = R->src[j];
const int dest = R->dest;
const u8 *rv = tables->route_values;
if (RVi(rv, B(src), B(dest)))
/* direct routing is valid */
++total;
else if (channel_is_rtsi(dest) &&
(RVi(rv, B(src), B(NI_RGOUT0)) ||
RVi(rv, B(src), B(NI_RTSI_BRD(0))) ||
RVi(rv, B(src), B(NI_RTSI_BRD(1))) ||
RVi(rv, B(src), B(NI_RTSI_BRD(2))) ||
RVi(rv, B(src), B(NI_RTSI_BRD(3))))) {
++total;
}
}
}
return total;
}
EXPORT_SYMBOL_GPL(ni_count_valid_routes);
/**
* 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.
*/
unsigned int ni_get_valid_routes(const struct ni_route_tables *tables,
unsigned int n_pairs,
unsigned int *pair_data)
{
unsigned int n_valid = ni_count_valid_routes(tables);
int i;
if (n_pairs == 0 || n_valid == 0)
return n_valid;
if (!pair_data)
return 0;
n_valid = 0;
for (i = 0; i < tables->valid_routes->n_route_sets; ++i) {
const struct ni_route_set *R = &tables->valid_routes->routes[i];
int j;
for (j = 0; j < R->n_src; ++j) {
const int src = R->src[j];
const int dest = R->dest;
bool valid = false;
const u8 *rv = tables->route_values;
if (RVi(rv, B(src), B(dest)))
/* direct routing is valid */
valid = true;
else if (channel_is_rtsi(dest) &&
(RVi(rv, B(src), B(NI_RGOUT0)) ||
RVi(rv, B(src), B(NI_RTSI_BRD(0))) ||
RVi(rv, B(src), B(NI_RTSI_BRD(1))) ||
RVi(rv, B(src), B(NI_RTSI_BRD(2))) ||
RVi(rv, B(src), B(NI_RTSI_BRD(3))))) {
/* indirect routing also valid */
valid = true;
}
if (valid) {
pair_data[2 * n_valid] = src;
pair_data[2 * n_valid + 1] = dest;
++n_valid;
}
if (n_valid >= n_pairs)
return n_valid;
}
}
return n_valid;
}
EXPORT_SYMBOL_GPL(ni_get_valid_routes);
/**
* List of NI global signal names that, as destinations, are only routeable
* indirectly through the *_arg elements of the comedi_cmd structure.
*/
static const int NI_CMD_DESTS[] = {
NI_AI_SampleClock,
NI_AI_StartTrigger,
NI_AI_ConvertClock,
NI_AO_SampleClock,
NI_AO_StartTrigger,
NI_DI_SampleClock,
NI_DO_SampleClock,
};
/**
* 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 dest)
{
int i;
for (i = 0; i < ARRAY_SIZE(NI_CMD_DESTS); ++i)
if (NI_CMD_DESTS[i] == dest)
return true;
return false;
}
EXPORT_SYMBOL_GPL(ni_is_cmd_dest);
/* **** BEGIN Routes sort routines **** */
static int _ni_sort_destcmp(const void *va, const void *vb)
{
const struct ni_route_set *a = va;
const struct ni_route_set *b = vb;
if (a->dest < b->dest)
return -1;
else if (a->dest > b->dest)
return 1;
return 0;
}
static int _ni_sort_srccmp(const void *vsrc0, const void *vsrc1)
{
const int *src0 = vsrc0;
const int *src1 = vsrc1;
if (*src0 < *src1)
return -1;
else if (*src0 > *src1)
return 1;
return 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)
{
unsigned int n;
/* 1. Count and set the number of ni_route_set objects. */
valid_routes->n_route_sets = 0;
while (valid_routes->routes[valid_routes->n_route_sets].dest != 0)
++valid_routes->n_route_sets;
/* 2. sort all ni_route_set objects by destination. */
sort(valid_routes->routes, valid_routes->n_route_sets,
sizeof(struct ni_route_set), _ni_sort_destcmp, NULL);
/* 3. Loop through each route_set for sorting. */
for (n = 0; n < valid_routes->n_route_sets; ++n) {
struct ni_route_set *rs = &valid_routes->routes[n];
/* 3a. Count and set the number of sources. */
rs->n_src = 0;
while (rs->src[rs->n_src])
++rs->n_src;
/* 3a. Sort sources. */
sort(valid_routes->routes[n].src, valid_routes->routes[n].n_src,
sizeof(int), _ni_sort_srccmp, NULL);
}
}
EXPORT_SYMBOL_GPL(ni_sort_device_routes);
/* sort all valid device signal routes in prep for use */
static void ni_sort_all_device_routes(void)
{
unsigned int i;
for (i = 0; ni_device_routes_list[i]; ++i)
ni_sort_device_routes(ni_device_routes_list[i]);
}
/* **** BEGIN Routes search routines **** */
static int _ni_bsearch_destcmp(const void *vkey, const void *velt)
{
const int *key = vkey;
const struct ni_route_set *elt = velt;
if (*key < elt->dest)
return -1;
else if (*key > elt->dest)
return 1;
return 0;
}
static int _ni_bsearch_srccmp(const void *vkey, const void *velt)
{
const int *key = vkey;
const int *elt = velt;
if (*key < *elt)
return -1;
else if (*key > *elt)
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.
*/
const struct ni_route_set *
ni_find_route_set(const int destination,
const struct ni_device_routes *valid_routes)
{
return bsearch(&destination, valid_routes->routes,
valid_routes->n_route_sets, sizeof(struct 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(const struct ni_route_set *routes,
const int source)
{
if (!bsearch(&source, routes->src, routes->n_src, sizeof(int),
_ni_bsearch_srccmp))
return false;
return true;
}
EXPORT_SYMBOL_GPL(ni_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,
const struct 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 = B(dest);
if (src < 0 || src >= NI_NUM_NAMES || dest < 0 || dest >= NI_NUM_NAMES)
return -EINVAL;
regval = RVi(tables->route_values, src, dest);
if (!regval)
return -EINVAL;
/* mask out the valid-value marking bit */
return UNMARK(regval);
}
EXPORT_SYMBOL_GPL(ni_lookup_route_register);
/**
* ni_route_to_register() - Validates and converts the specified signal route
* (src-->dest) to the value used at the appropriate
* register.
* @src: global-identifier for route source
* @dest: global-identifier for route destination
* @tables: pointer to relevant set of routing tables.
*
* Generally speaking, most routes require the first six bits and a few require
* 7 bits. Special handling is given for the return value when the route is to
* be handled by the RTSI sub-device. In this case, the returned register may
* not be sufficient to define the entire route path, but rather may only
* indicate the intermediate route. For example, if the route must go through
* the RGOUT0 pin, the (src->RGOUT0) register value will be returned.
* Similarly, if the route must go through the NI_RTSI_BRD lines, the BIT(6)
* will be set:
*
* if route does not need RTSI_BRD lines:
* bits 0:7 : register value
* for a route that must go through RGOUT0 pin, this will be equal
* to the (src->RGOUT0) register value.
* else: * route is (src->RTSI_BRD(x), RTSI_BRD(x)->TRIGGER_LINE(i)) *
* bits 0:5 : zero
* bits 6 : set to 1
* bits 7:7 : zero
*
* Return: register value to be used for source at destination with special
* cases given above; Otherwise, -1 if the specified route is not valid for
* this particular device.
*/
s8 ni_route_to_register(const int src, const int dest,
const struct ni_route_tables *tables)
{
const struct ni_route_set *routes =
ni_find_route_set(dest, tables->valid_routes);
const u8 *rv;
s8 regval;
/* first check to see if source is listed with bunch of destinations. */
if (!routes)
return -1;
/* 2nd, check to see if destination is in list of source's targets. */
if (!ni_route_set_has_source(routes, src))
return -1;
/*
* 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.
*/
rv = tables->route_values;
regval = RVi(rv, B(src), B(dest));
/*
* 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 = RVi(rv, B(src), B(NI_RGOUT0));
if (!regval && (RVi(rv, B(src), B(NI_RTSI_BRD(0))) ||
RVi(rv, B(src), B(NI_RTSI_BRD(1))) ||
RVi(rv, B(src), B(NI_RTSI_BRD(2))) ||
RVi(rv, B(src), B(NI_RTSI_BRD(3)))))
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,
const struct ni_route_tables *tables)
{
int src;
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);
/* **** END Routes search routines **** */
/* **** BEGIN simple module entry/exit functions **** */
static int __init ni_routes_module_init(void)
{
ni_sort_all_device_routes();
return 0;
}
static void __exit ni_routes_module_exit(void)
{
}
module_init(ni_routes_module_init);
module_exit(ni_routes_module_exit);
MODULE_AUTHOR("Comedi http://www.comedi.org");
MODULE_DESCRIPTION("Comedi helper for routing signals-->terminals for NI");
MODULE_LICENSE("GPL");
/* **** END simple module entry/exit functions **** */

329
drivers/staging/comedi/drivers/ni_routes.h Normal file
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@ -0,0 +1,329 @@
/* SPDX-License-Identifier: GPL-2.0+ */
/* vim: set ts=8 sw=8 noet tw=80 nowrap: */
/*
* comedi/drivers/ni_routes.h
* 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.
*/
#ifndef _COMEDI_DRIVERS_NI_ROUTES_H
#define _COMEDI_DRIVERS_NI_ROUTES_H
#include <linux/types.h>
#include <linux/errno.h>
#ifndef NI_ROUTE_VALUE_EXTERNAL_CONVERSION
#include <linux/bitops.h>
#endif
#include "../comedi.h"
/**
* struct ni_route_set - Set of destinations with a common source.
* @dest: Destination of all sources in this route set.
* @n_src: Number of sources for this route set.
* @src: List of sources that all map to the same destination.
*/
struct ni_route_set {
int dest;
int n_src;
int *src;
};
/**
* struct ni_device_routes - List of all src->dest sets for a particular device.
* @device: Name of board/device (e.g. pxi-6733).
* @n_route_sets: Number of route sets that are valid for this device.
* @routes: List of route sets that are valid for this device.
*/
struct ni_device_routes {
const char *device;
int n_route_sets;
struct ni_route_set *routes;
};
/**
* struct ni_route_tables - Register values and valid routes for a device.
* @valid_routes: Pointer to a all valid route sets for a single device.
* @route_values: Pointer to register values for all routes for the family to
* which the device belongs.
*
* Link to the valid src->dest routes and the register values used to assign
* such routes for that particular device.
*/
struct ni_route_tables {
const struct ni_device_routes *valid_routes;
const u8 *route_values;
};
/*
* ni_assign_device_routes() - Assign the proper lookup table for NI signal
* routing to the specified NI device.
*
* Return: -ENODATA if assignment was not successful; 0 if successful.
*/
int ni_assign_device_routes(const char *device_family,
const char *board_name,
struct ni_route_tables *tables);
/*
* 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.
*/
const struct ni_route_set *
ni_find_route_set(const int destination,
const struct ni_device_routes *valid_routes);
/*
* 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(const struct ni_route_set *routes, const int src);
/*
* ni_route_to_register() - Validates and converts the specified signal route
* (src-->dest) to the value used at the appropriate
* register.
* @src: global-identifier for route source
* @dest: global-identifier for route destination
* @tables: pointer to relevant set of routing tables.
*
* Generally speaking, most routes require the first six bits and a few require
* 7 bits. Special handling is given for the return value when the route is to
* be handled by the RTSI sub-device. In this case, the returned register may
* not be sufficient to define the entire route path, but rather may only
* indicate the intermediate route. For example, if the route must go through
* the RGOUT0 pin, the (src->RGOUT0) register value will be returned.
* Similarly, if the route must go through the NI_RTSI_BRD lines, the BIT(6)
* will be set:
*
* if route does not need RTSI_BRD lines:
* bits 0:7 : register value
* for a route that must go through RGOUT0 pin, this will be equal
* to the (src->RGOUT0) register value.
* else: * route is (src->RTSI_BRD(x), RTSI_BRD(x)->TRIGGER_LINE(i)) *
* bits 0:5 : zero
* bits 6 : set to 1
* bits 7:7 : zero
*
* Return: register value to be used for source at destination with special
* cases given above; Otherwise, -1 if the specified route is not valid for
* this particular device.
*/
s8 ni_route_to_register(const int src, const int dest,
const struct ni_route_tables *tables);
static inline bool ni_rtsi_route_requires_mux(s8 value)
{
return value & BIT(6);
}
/*
* 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,
const struct ni_route_tables *tables);
/**
* route_is_valid() - Determines whether the specified signal route (src-->dest)
* is valid for the given NI comedi_device.
* @src: global-identifier for route source
* @dest: global-identifier for route destination
* @tables: pointer to relevant set of routing tables.
*
* Return: True if the route is valid, otherwise false.
*/
static inline bool route_is_valid(const int src, const int dest,
const struct ni_route_tables *tables)
{
return ni_route_to_register(src, dest, tables) >= 0;
}
/*
* 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 dest);
static inline bool channel_is_pfi(int channel)
{
return NI_PFI(0) <= channel && channel <= NI_PFI(-1);
}
static inline bool channel_is_rtsi(int channel)
{
return TRIGGER_LINE(0) <= channel && channel <= TRIGGER_LINE(-1);
}
static inline bool channel_is_ctr(int channel)
{
return channel >= NI_COUNTER_NAMES_BASE &&
channel <= NI_COUNTER_NAMES_MAX;
}
/*
* ni_count_valid_routes() - Count the number of valid routes.
* @tables: Routing tables for which to count all valid routes.
*/
unsigned int ni_count_valid_routes(const struct ni_route_tables *tables);
/*
* 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.
*/
unsigned int ni_get_valid_routes(const struct ni_route_tables *tables,
unsigned int n_pairs,
unsigned int *pair_data);
/*
* 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);
/*
* 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, const int dest,
const struct ni_route_tables *tables);
/**
* route_register_is_valid() - Determines whether the register value for the
* specified route destination on the specified
* device is valid.
*/
static inline bool route_register_is_valid(const u8 src_sel_reg_value,
const int dest,
const struct ni_route_tables *tables)
{
return ni_find_route_source(src_sel_reg_value, dest, tables) >= 0;
}
/**
* ni_get_reg_value_roffs() - Determines the proper register value for a
* particular valid NI signal/terminal route.
* @src: Either a direct register value or one of NI_* signal names.
* @dest: global-identifier for route destination
* @tables: pointer to relevant set of routing tables.
* @direct_reg_offset:
* Compatibility compensation argument. This argument allows us to
* arbitrarily apply an offset to src if src is a direct register
* value reference. This is necessary to be compatible with
* definitions of register values as previously exported directly
* to user space.
*
* Return: the register value (>0) to be used at the destination if the src is
* valid for the given destination; -1 otherwise.
*/
static inline s8 ni_get_reg_value_roffs(int src, const int dest,
const struct ni_route_tables *tables,
const int direct_reg_offset)
{
if (src < NI_NAMES_BASE) {
src += direct_reg_offset;
/*
* In this case, the src is expected to actually be a register
* value.
*/
if (route_register_is_valid(src, dest, tables))
return src;
return -1;
}
/*
* Otherwise, the src is expected to be one of the abstracted NI
* signal/terminal names.
*/
return ni_route_to_register(src, dest, tables);
}
static inline int ni_get_reg_value(const int src, const int dest,
const struct ni_route_tables *tables)
{
return ni_get_reg_value_roffs(src, dest, tables, 0);
}
/**
* ni_check_trigger_arg_roffs() - Checks the trigger argument (*_arg) of an NI
* device to ensure that the *_arg value
* corresponds to _either_ a valid register value
* to define a trigger source, _or_ a valid NI
* signal/terminal name that has a valid route to
* the destination on the particular device.
* @src: Either a direct register value or one of NI_* signal names.
* @dest: global-identifier for route destination
* @tables: pointer to relevant set of routing tables.
* @direct_reg_offset:
* Compatibility compensation argument. This argument allows us to
* arbitrarily apply an offset to src if src is a direct register
* value reference. This is necessary to be compatible with
* definitions of register values as previously exported directly
* to user space.
*
* Return: 0 if the src (either register value or NI signal/terminal name) is
* valid for the destination; -EINVAL otherwise.
*/
static inline
int ni_check_trigger_arg_roffs(int src, const int dest,
const struct ni_route_tables *tables,
const int direct_reg_offset)
{
if (ni_get_reg_value_roffs(src, dest, tables, direct_reg_offset) < 0)
return -EINVAL;
return 0;
}
static inline int ni_check_trigger_arg(const int src, const int dest,
const struct ni_route_tables *tables)
{
return ni_check_trigger_arg_roffs(src, dest, tables, 0);
}
#endif /* _COMEDI_DRIVERS_NI_ROUTES_H */

4
drivers/staging/comedi/drivers/ni_stc.h
View File

@ -15,6 +15,7 @@
#define _COMEDI_NI_STC_H
#include "ni_tio.h"
#include "ni_routes.h"
/*
* Registers in the National Instruments DAQ-STC chip
@ -1058,6 +1059,9 @@ struct ni_private {
* possible.
*/
unsigned int ao_needs_arming:1;
/* device signal route tables */
struct ni_route_tables routing_tables;
};
static const struct comedi_lrange range_ni_E_ao_ext;

3
drivers/staging/comedi/drivers/tests/Makefile
View File

@ -3,4 +3,5 @@
#
ccflags-$(CONFIG_COMEDI_DEBUG) := -DDEBUG
obj-$(CONFIG_COMEDI_TESTS) += example_test.o
obj-$(CONFIG_COMEDI_TESTS) += example_test.o ni_routes_test.o
CFLAGS_ni_routes_test.o := -DDEBUG

613
drivers/staging/comedi/drivers/tests/ni_routes_test.c Normal file
View File

@ -0,0 +1,613 @@
// SPDX-License-Identifier: GPL-2.0+
/* vim: set ts=8 sw=8 noet tw=80 nowrap: */
/*
* comedi/drivers/tests/ni_routes_test.c
* Unit tests for NI routes (ni_routes.c module).
*
* 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.
*/
#include <linux/module.h>
#include "../ni_stc.h"
#include "../ni_routes.h"
#include "unittest.h"
#define RVi(table, src, dest) ((table)[(dest) * NI_NUM_NAMES + (src)])
#define O(x) ((x) + NI_NAMES_BASE)
#define B(x) ((x) - NI_NAMES_BASE)
#define V(x) ((x) | 0x80)
/* *** BEGIN fake board data *** */
static const char *pci_6070e = "pci-6070e";
static const char *pci_6220 = "pci-6220";
static const char *pci_fake = "pci-fake";
static const char *ni_eseries = "ni_eseries";
static const char *ni_mseries = "ni_mseries";
static struct ni_board_struct board = {
.name = NULL,
};
static struct ni_private private = {
.is_m_series = 0,
};
static const int bad_dest = O(8), dest0 = O(0), desti = O(5);
static const int ith_dest_index = 2;
static const int no_val_dest = O(7), no_val_index = 4;
/* These have to be defs to be used in init code below */
#define rgout0_src0 (O(100))
#define rgout0_src1 (O(101))
#define brd0_src0 (O(110))
#define brd0_src1 (O(111))
#define brd1_src0 (O(120))
#define brd1_src1 (O(121))
#define brd2_src0 (O(130))
#define brd2_src1 (O(131))
#define brd3_src0 (O(140))
#define brd3_src1 (O(141))
/* I1 and I2 should not call O(...). Mostly here to shut checkpatch.pl up */
#define I1(x1) \
(int[]){ \
x1, 0 \
}
#define I2(x1, x2) \
(int[]){ \
(x1), (x2), 0 \
}
#define I3(x1, x2, x3) \
(int[]){ \
(x1), (x2), (x3), 0 \
}
/* O9 is build to call O(...) for each arg */
#define O9(x1, x2, x3, x4, x5, x6, x7, x8, x9) \
(int[]){ \
O(x1), O(x2), O(x3), O(x4), O(x5), O(x6), O(x7), O(x8), O(x9), \
0 \
}
static struct ni_device_routes DR = {
.device = "testdev",
.routes = (struct ni_route_set[]){
{.dest = O(0), .src = O9(/**/1, 2, 3, 4, 5, 6, 7, 8, 9)},
{.dest = O(1), .src = O9(0, /**/2, 3, 4, 5, 6, 7, 8, 9)},
/* ith route_set */
{.dest = O(5), .src = O9(0, 1, 2, 3, 4,/**/ 6, 7, 8, 9)},
{.dest = O(6), .src = O9(0, 1, 2, 3, 4, 5,/**/ 7, 8, 9)},
/* next one will not have valid reg values */
{.dest = O(7), .src = O9(0, 1, 2, 3, 4, 5, 6,/**/ 8, 9)},
{.dest = O(9), .src = O9(0, 1, 2, 3, 4, 5, 6, 7, 8/**/)},
/* indirect routes done through muxes */
{.dest = TRIGGER_LINE(0), .src = I1(rgout0_src0)},
{.dest = TRIGGER_LINE(1), .src = I3(rgout0_src0,
brd3_src0,
brd3_src1)},
{.dest = TRIGGER_LINE(2), .src = I3(rgout0_src1,
brd2_src0,
brd2_src1)},
{.dest = TRIGGER_LINE(3), .src = I3(rgout0_src1,
brd1_src0,
brd1_src1)},
{.dest = TRIGGER_LINE(4), .src = I2(brd0_src0,
brd0_src1)},
{.dest = 0},
},
};
#undef I1
#undef I2
#undef O9
#define RV9(x1, x2, x3, x4, x5, x6, x7, x8, x9) \
[x1] = V(x1), [x2] = V(x2), [x3] = V(x3), [x4] = V(x4), \
[x5] = V(x5), [x6] = V(x6), [x7] = V(x7), [x8] = V(x8), \
[x9] = V(x9),
/* This table is indexed as RV[destination][source] */
static const u8 RV[NI_NUM_NAMES][NI_NUM_NAMES] = {
[0] = {RV9(/**/1, 2, 3, 4, 5, 6, 7, 8, 9)},
[1] = {RV9(0,/**/ 2, 3, 4, 5, 6, 7, 8, 9)},
[2] = {RV9(0, 1,/**/3, 4, 5, 6, 7, 8, 9)},
[3] = {RV9(0, 1, 2,/**/4, 5, 6, 7, 8, 9)},
[4] = {RV9(0, 1, 2, 3,/**/5, 6, 7, 8, 9)},
[5] = {RV9(0, 1, 2, 3, 4,/**/6, 7, 8, 9)},
[6] = {RV9(0, 1, 2, 3, 4, 5,/**/7, 8, 9)},
/* [7] is intentionaly left absent to test invalid routes */
[8] = {RV9(0, 1, 2, 3, 4, 5, 6, 7,/**/9)},
[9] = {RV9(0, 1, 2, 3, 4, 5, 6, 7, 8/**/)},
/* some tests for needing extra muxes */
[B(NI_RGOUT0)] = {[B(rgout0_src0)] = V(0),
[B(rgout0_src1)] = V(1)},
[B(NI_RTSI_BRD(0))] = {[B(brd0_src0)] = V(0),
[B(brd0_src1)] = V(1)},
[B(NI_RTSI_BRD(1))] = {[B(brd1_src0)] = V(0),
[B(brd1_src1)] = V(1)},
[B(NI_RTSI_BRD(2))] = {[B(brd2_src0)] = V(0),
[B(brd2_src1)] = V(1)},
[B(NI_RTSI_BRD(3))] = {[B(brd3_src0)] = V(0),
[B(brd3_src1)] = V(1)},
};
#undef RV9
/* *** END fake board data *** */
/* *** BEGIN board data initializers *** */
static void init_private(void)
{
memset(&private, 0, sizeof(struct ni_private));
}
static void init_pci_6070e(void)
{
board.name = pci_6070e;
init_private();
private.is_m_series = 0;
}
static void init_pci_6220(void)
{
board.name = pci_6220;
init_private();
private.is_m_series = 1;
}
static void init_pci_fake(void)
{
board.name = pci_fake;
init_private();
private.routing_tables.route_values = &RV[0][0];
private.routing_tables.valid_routes = &DR;
}
/* *** END board data initializers *** */
/* Tests that route_sets are in order of the signal destination. */
static bool route_set_dests_in_order(const struct ni_device_routes *devroutes)
{
int i;
int last = NI_NAMES_BASE - 1;
for (i = 0; i < devroutes->n_route_sets; ++i) {
if (last >= devroutes->routes[i].dest)
return false;
last = devroutes->routes[i].dest;
}
return true;
}
/* Tests that all route_set->src are in order of the signal source. */
bool route_set_sources_in_order(const struct ni_device_routes *devroutes)
{
int i;
for (i = 0; i < devroutes->n_route_sets; ++i) {
int j;
int last = NI_NAMES_BASE - 1;
for (j = 0; j < devroutes->routes[i].n_src; ++j) {
if (last >= devroutes->routes[i].src[j])
return false;
last = devroutes->routes[i].src[j];
}
}
return true;
}
void test_ni_assign_device_routes(void)
{
const struct ni_device_routes *devroutes, *olddevroutes;
const u8 *table, *oldtable;
init_pci_6070e();
ni_assign_device_routes(ni_eseries, pci_6070e, &private.routing_tables);
devroutes = private.routing_tables.valid_routes;
table = private.routing_tables.route_values;
unittest(strncmp(devroutes->device, pci_6070e, 10) == 0,
"find device pci-6070e\n");
unittest(devroutes->n_route_sets == 37,
"number of pci-6070e route_sets == 37\n");
unittest(devroutes->routes->dest == NI_PFI(0),
"first pci-6070e route_set is for NI_PFI(0)\n");
unittest(devroutes->routes->n_src == 1,
"first pci-6070e route_set length == 1\n");
unittest(devroutes->routes->src[0] == NI_AI_StartTrigger,
"first pci-6070e route_set src. == NI_AI_StartTrigger\n");
unittest(devroutes->routes[10].dest == TRIGGER_LINE(0),
"10th pci-6070e route_set is for TRIGGER_LINE(0)\n");
unittest(devroutes->routes[10].n_src == 10,
"10th pci-6070e route_set length == 10\n");
unittest(devroutes->routes[10].src[0] == NI_CtrSource(0),
"10th pci-6070e route_set src. == NI_CtrSource(0)\n");
unittest(route_set_dests_in_order(devroutes),
"all pci-6070e route_sets in order of signal destination\n");
unittest(route_set_sources_in_order(devroutes),
"all pci-6070e route_set->src's in order of signal source\n");
unittest(
RVi(table, B(PXI_Star), B(NI_AI_SampleClock)) == V(17) &&
RVi(table, B(NI_10MHzRefClock), B(TRIGGER_LINE(0))) == 0 &&
RVi(table, B(NI_AI_ConvertClock), B(NI_PFI(0))) == 0 &&
RVi(table, B(NI_AI_ConvertClock), B(NI_PFI(2))) ==
V(NI_PFI_OUTPUT_AI_CONVERT),
"pci-6070e finds e-series route_values table\n");
olddevroutes = devroutes;
oldtable = table;
init_pci_6220();
ni_assign_device_routes(ni_mseries, pci_6220, &private.routing_tables);
devroutes = private.routing_tables.valid_routes;
table = private.routing_tables.route_values;
unittest(strncmp(devroutes->device, pci_6220, 10) == 0,
"find device pci-6220\n");
unittest(oldtable != table, "pci-6220 find other route_values table\n");
unittest(
RVi(table, B(PXI_Star), B(NI_AI_SampleClock)) == V(20) &&
RVi(table, B(NI_10MHzRefClock), B(TRIGGER_LINE(0))) == V(12) &&
RVi(table, B(NI_AI_ConvertClock), B(NI_PFI(0))) == V(3) &&
RVi(table, B(NI_AI_ConvertClock), B(NI_PFI(2))) == V(3),
"pci-6220 finds m-series route_values table\n");
}
void test_ni_sort_device_routes(void)
{
/* We begin by sorting the device routes for use in later tests */
ni_sort_device_routes(&DR);
/* now we test that sorting. */
unittest(route_set_dests_in_order(&DR),
"all route_sets of fake data in order of sig. destination\n");
unittest(route_set_sources_in_order(&DR),
"all route_set->src's of fake data in order of sig. source\n");
}
void test_ni_find_route_set(void)
{
unittest(ni_find_route_set(bad_dest, &DR) == NULL,
"check for nonexistent route_set\n");
unittest(ni_find_route_set(dest0, &DR) == &DR.routes[0],
"find first route_set\n");
unittest(ni_find_route_set(desti, &DR) == &DR.routes[ith_dest_index],
"find ith route_set\n");
unittest(ni_find_route_set(no_val_dest, &DR) ==
&DR.routes[no_val_index],
"find no_val route_set in spite of missing values\n");
unittest(ni_find_route_set(DR.routes[DR.n_route_sets - 1].dest, &DR) ==
&DR.routes[DR.n_route_sets - 1],
"find last route_set\n");
}
void test_ni_route_set_has_source(void)
{
unittest(!ni_route_set_has_source(&DR.routes[0], O(0)),
"check for bad source\n");
unittest(ni_route_set_has_source(&DR.routes[0], O(1)),
"find first source\n");
unittest(ni_route_set_has_source(&DR.routes[0], O(5)),
"find fifth source\n");
unittest(ni_route_set_has_source(&DR.routes[0], O(9)),
"find last source\n");
}
void test_ni_route_to_register(void)
{
const struct ni_route_tables *T = &private.routing_tables;
init_pci_fake();
unittest(ni_route_to_register(O(0), O(0), T) < 0,
"check for bad route 0-->0\n");
unittest(ni_route_to_register(O(1), O(0), T) == 1,
"validate first destination\n");
unittest(ni_route_to_register(O(6), O(5), T) == 6,
"validate middle destination\n");
unittest(ni_route_to_register(O(8), O(9), T) == 8,
"validate last destination\n");
/* choice of trigger line in the following is somewhat random */
unittest(ni_route_to_register(rgout0_src0, TRIGGER_LINE(0), T) == 0,
"validate indirect route through rgout0 to TRIGGER_LINE(0)\n");
unittest(ni_route_to_register(rgout0_src0, TRIGGER_LINE(1), T) == 0,
"validate indirect route through rgout0 to TRIGGER_LINE(1)\n");
unittest(ni_route_to_register(rgout0_src1, TRIGGER_LINE(2), T) == 1,
"validate indirect route through rgout0 to TRIGGER_LINE(2)\n");
unittest(ni_route_to_register(rgout0_src1, TRIGGER_LINE(3), T) == 1,
"validate indirect route through rgout0 to TRIGGER_LINE(3)\n");
unittest(ni_route_to_register(brd0_src0, TRIGGER_LINE(4), T) ==
BIT(6),
"validate indirect route through brd0 to TRIGGER_LINE(4)\n");
unittest(ni_route_to_register(brd0_src1, TRIGGER_LINE(4), T) ==
BIT(6),
"validate indirect route through brd0 to TRIGGER_LINE(4)\n");
unittest(ni_route_to_register(brd1_src0, TRIGGER_LINE(3), T) ==
BIT(6),
"validate indirect route through brd1 to TRIGGER_LINE(3)\n");
unittest(ni_route_to_register(brd1_src1, TRIGGER_LINE(3), T) ==
BIT(6),
"validate indirect route through brd1 to TRIGGER_LINE(3)\n");
unittest(ni_route_to_register(brd2_src0, TRIGGER_LINE(2), T) ==
BIT(6),
"validate indirect route through brd2 to TRIGGER_LINE(2)\n");
unittest(ni_route_to_register(brd2_src1, TRIGGER_LINE(2), T) ==
BIT(6),
"validate indirect route through brd2 to TRIGGER_LINE(2)\n");
unittest(ni_route_to_register(brd3_src0, TRIGGER_LINE(1), T) ==
BIT(6),
"validate indirect route through brd3 to TRIGGER_LINE(1)\n");
unittest(ni_route_to_register(brd3_src1, TRIGGER_LINE(1), T) ==
BIT(6),
"validate indirect route through brd3 to TRIGGER_LINE(1)\n");
}
void test_ni_lookup_route_register(void)
{
const struct ni_route_tables *T = &private.routing_tables;
init_pci_fake();
unittest(ni_lookup_route_register(O(0), O(0), T) == -EINVAL,
"check for bad route 0-->0\n");
unittest(ni_lookup_route_register(O(1), O(0), T) == 1,
"validate first destination\n");
unittest(ni_lookup_route_register(O(6), O(5), T) == 6,
"validate middle destination\n");
unittest(ni_lookup_route_register(O(8), O(9), T) == 8,
"validate last destination\n");
unittest(ni_lookup_route_register(O(10), O(9), T) == -EINVAL,
"lookup invalid desination\n");
unittest(ni_lookup_route_register(rgout0_src0, TRIGGER_LINE(0), T) ==
-EINVAL,
"rgout0_src0: no direct lookup of indirect route\n");
unittest(ni_lookup_route_register(rgout0_src0, NI_RGOUT0, T) == 0,
"rgout0_src0: lookup indirect route register\n");
unittest(ni_lookup_route_register(rgout0_src1, TRIGGER_LINE(2), T) ==
-EINVAL,
"rgout0_src1: no direct lookup of indirect route\n");
unittest(ni_lookup_route_register(rgout0_src1, NI_RGOUT0, T) == 1,
"rgout0_src1: lookup indirect route register\n");
unittest(ni_lookup_route_register(brd0_src0, TRIGGER_LINE(4), T) ==
-EINVAL,
"brd0_src0: no direct lookup of indirect route\n");
unittest(ni_lookup_route_register(brd0_src0, NI_RTSI_BRD(0), T) == 0,
"brd0_src0: lookup indirect route register\n");
unittest(ni_lookup_route_register(brd0_src1, TRIGGER_LINE(4), T) ==
-EINVAL,
"brd0_src1: no direct lookup of indirect route\n");
unittest(ni_lookup_route_register(brd0_src1, NI_RTSI_BRD(0), T) == 1,
"brd0_src1: lookup indirect route register\n");
}
void test_route_is_valid(void)
{
const struct ni_route_tables *T = &private.routing_tables;
init_pci_fake();
unittest(!route_is_valid(O(0), O(0), T),
"check for bad route 0-->0\n");
unittest(route_is_valid(O(0), O(1), T),
"validate first destination\n");
unittest(route_is_valid(O(5), O(6), T),
"validate middle destination\n");
unittest(route_is_valid(O(8), O(9), T),
"validate last destination\n");
}
void test_ni_is_cmd_dest(void)
{
init_pci_fake();
unittest(ni_is_cmd_dest(NI_AI_SampleClock),
"check that AI/SampleClock is cmd destination\n");
unittest(ni_is_cmd_dest(NI_AI_StartTrigger),
"check that AI/StartTrigger is cmd destination\n");
unittest(ni_is_cmd_dest(NI_AI_ConvertClock),
"check that AI/ConvertClock is cmd destination\n");
unittest(ni_is_cmd_dest(NI_AO_SampleClock),
"check that AO/SampleClock is cmd destination\n");
unittest(ni_is_cmd_dest(NI_DO_SampleClock),
"check that DO/SampleClock is cmd destination\n");
unittest(!ni_is_cmd_dest(NI_AO_SampleClockTimebase),
"check that AO/SampleClockTimebase _not_ cmd destination\n");
}
void test_channel_is_pfi(void)
{
init_pci_fake();
unittest(channel_is_pfi(NI_PFI(0)), "check First pfi channel\n");
unittest(channel_is_pfi(NI_PFI(10)), "check 10th pfi channel\n");
unittest(channel_is_pfi(NI_PFI(-1)), "check last pfi channel\n");
unittest(!channel_is_pfi(NI_PFI(-1) + 1),
"check first non pfi channel\n");
}
void test_channel_is_rtsi(void)
{
init_pci_fake();
unittest(channel_is_rtsi(TRIGGER_LINE(0)),
"check First rtsi channel\n");
unittest(channel_is_rtsi(TRIGGER_LINE(3)),
"check 3rd rtsi channel\n");
unittest(channel_is_rtsi(TRIGGER_LINE(-1)),
"check last rtsi channel\n");
unittest(!channel_is_rtsi(TRIGGER_LINE(-1) + 1),
"check first non rtsi channel\n");
}
void test_ni_count_valid_routes(void)
{
const struct ni_route_tables *T = &private.routing_tables;
init_pci_fake();
unittest(ni_count_valid_routes(T) == 57, "count all valid routes\n");
}
void test_ni_get_valid_routes(void)
{
const struct ni_route_tables *T = &private.routing_tables;
unsigned int pair_data[2];
init_pci_fake();
unittest(ni_get_valid_routes(T, 0, NULL) == 57,
"count all valid routes through ni_get_valid_routes\n");
unittest(ni_get_valid_routes(T, 1, pair_data) == 1,
"copied first valid route from ni_get_valid_routes\n");
unittest(pair_data[0] == O(1),
"source of first valid pair from ni_get_valid_routes\n");
unittest(pair_data[1] == O(0),
"destination of first valid pair from ni_get_valid_routes\n");
}
void test_ni_find_route_source(void)
{
const struct ni_route_tables *T = &private.routing_tables;
init_pci_fake();
unittest(ni_find_route_source(4, O(4), T) == -EINVAL,
"check for bad source 4-->4\n");
unittest(ni_find_route_source(0, O(1), T) == O(0),
"find first source\n");
unittest(ni_find_route_source(4, O(6), T) == O(4),
"find middle source\n");
unittest(ni_find_route_source(9, O(8), T) == O(9),
"find last source");
unittest(ni_find_route_source(8, O(9), T) == O(8),
"find invalid source (without checking device routes)\n");
}
void test_route_register_is_valid(void)
{
const struct ni_route_tables *T = &private.routing_tables;
init_pci_fake();
unittest(route_register_is_valid(4, O(4), T) == false,
"check for bad source 4-->4\n");
unittest(route_register_is_valid(0, O(1), T) == true,
"find first source\n");
unittest(route_register_is_valid(4, O(6), T) == true,
"find middle source\n");
unittest(route_register_is_valid(9, O(8), T) == true,
"find last source");
}
void test_ni_check_trigger_arg(void)
{
const struct ni_route_tables *T = &private.routing_tables;
init_pci_fake();
unittest(ni_check_trigger_arg(0, O(0), T) == -EINVAL,
"check bad direct trigger arg for first reg->dest\n");
unittest(ni_check_trigger_arg(0, O(1), T) == 0,
"check direct trigger arg for first reg->dest\n");
unittest(ni_check_trigger_arg(4, O(6), T) == 0,
"check direct trigger arg for middle reg->dest\n");
unittest(ni_check_trigger_arg(9, O(8), T) == 0,
"check direct trigger arg for last reg->dest\n");
unittest(ni_check_trigger_arg_roffs(-1, O(0), T, 1) == -EINVAL,
"check bad direct trigger arg for first reg->dest w/offs\n");
unittest(ni_check_trigger_arg_roffs(0, O(1), T, 0) == 0,
"check direct trigger arg for first reg->dest w/offs\n");
unittest(ni_check_trigger_arg_roffs(3, O(6), T, 1) == 0,
"check direct trigger arg for middle reg->dest w/offs\n");
unittest(ni_check_trigger_arg_roffs(7, O(8), T, 2) == 0,
"check direct trigger arg for last reg->dest w/offs\n");
unittest(ni_check_trigger_arg(O(0), O(0), T) == -EINVAL,
"check bad trigger arg for first src->dest\n");
unittest(ni_check_trigger_arg(O(0), O(1), T) == 0,
"check trigger arg for first src->dest\n");
unittest(ni_check_trigger_arg(O(5), O(6), T) == 0,
"check trigger arg for middle src->dest\n");
unittest(ni_check_trigger_arg(O(8), O(9), T) == 0,
"check trigger arg for last src->dest\n");
}
void test_ni_get_reg_value(void)
{
const struct ni_route_tables *T = &private.routing_tables;
init_pci_fake();
unittest(ni_get_reg_value(0, O(0), T) == -1,
"check bad direct trigger arg for first reg->dest\n");
unittest(ni_get_reg_value(0, O(1), T) == 0,
"check direct trigger arg for first reg->dest\n");
unittest(ni_get_reg_value(4, O(6), T) == 4,
"check direct trigger arg for middle reg->dest\n");
unittest(ni_get_reg_value(9, O(8), T) == 9,
"check direct trigger arg for last reg->dest\n");
unittest(ni_get_reg_value_roffs(-1, O(0), T, 1) == -1,
"check bad direct trigger arg for first reg->dest w/offs\n");
unittest(ni_get_reg_value_roffs(0, O(1), T, 0) == 0,
"check direct trigger arg for first reg->dest w/offs\n");
unittest(ni_get_reg_value_roffs(3, O(6), T, 1) == 4,
"check direct trigger arg for middle reg->dest w/offs\n");
unittest(ni_get_reg_value_roffs(7, O(8), T, 2) == 9,
"check direct trigger arg for last reg->dest w/offs\n");
unittest(ni_get_reg_value(O(0), O(0), T) == -1,
"check bad trigger arg for first src->dest\n");
unittest(ni_get_reg_value(O(0), O(1), T) == 0,
"check trigger arg for first src->dest\n");
unittest(ni_get_reg_value(O(5), O(6), T) == 5,
"check trigger arg for middle src->dest\n");
unittest(ni_get_reg_value(O(8), O(9), T) == 8,
"check trigger arg for last src->dest\n");
}
/* **** BEGIN simple module entry/exit functions **** */
static int __init ni_routes_unittest(void)
{
const unittest_fptr unit_tests[] = {
(unittest_fptr)test_ni_assign_device_routes,
(unittest_fptr)test_ni_sort_device_routes,
(unittest_fptr)test_ni_find_route_set,
(unittest_fptr)test_ni_route_set_has_source,
(unittest_fptr)test_ni_route_to_register,
(unittest_fptr)test_ni_lookup_route_register,
(unittest_fptr)test_route_is_valid,
(unittest_fptr)test_ni_is_cmd_dest,
(unittest_fptr)test_channel_is_pfi,
(unittest_fptr)test_channel_is_rtsi,
(unittest_fptr)test_ni_count_valid_routes,
(unittest_fptr)test_ni_get_valid_routes,
(unittest_fptr)test_ni_find_route_source,
(unittest_fptr)test_route_register_is_valid,
(unittest_fptr)test_ni_check_trigger_arg,
(unittest_fptr)test_ni_get_reg_value,
NULL,
};
exec_unittests("ni_routes", unit_tests);
return 0;
}
static void __exit ni_routes_unittest_exit(void) { }
module_init(ni_routes_unittest);
module_exit(ni_routes_unittest_exit);
MODULE_AUTHOR("Comedi http://www.comedi.org");
MODULE_DESCRIPTION("Comedi unit-tests for ni_routes module");
MODULE_LICENSE("GPL");
/* **** END simple module entry/exit functions **** */