^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * linux/drivers/spi/spi-loopback-test.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * (c) Martin Sperl <kernel@martin.sperl.org>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Loopback test driver to test several typical spi_message conditions
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * that a spi_master driver may encounter
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * this can also get used for regression testing
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/delay.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/ktime.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/list.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/list_sort.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/of_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/printk.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/vmalloc.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/spi/spi.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include "spi-test.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) /* flag to only simulate transfers */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) static int simulate_only;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) module_param(simulate_only, int, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) MODULE_PARM_DESC(simulate_only, "if not 0 do not execute the spi message");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) /* dump spi messages */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) static int dump_messages;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) module_param(dump_messages, int, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) MODULE_PARM_DESC(dump_messages,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) "=1 dump the basic spi_message_structure, " \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) "=2 dump the spi_message_structure including data, " \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) "=3 dump the spi_message structure before and after execution");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) /* the device is jumpered for loopback - enabling some rx_buf tests */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) static int loopback;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) module_param(loopback, int, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) MODULE_PARM_DESC(loopback,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) "if set enable loopback mode, where the rx_buf " \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) "is checked to match tx_buf after the spi_message " \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) "is executed");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) static int loop_req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) module_param(loop_req, int, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) MODULE_PARM_DESC(loop_req,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) "if set controller will be asked to enable test loop mode. " \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) "If controller supported it, MISO and MOSI will be connected");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) static int no_cs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) module_param(no_cs, int, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) MODULE_PARM_DESC(no_cs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) "if set Chip Select (CS) will not be used");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) /* run only a specific test */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) static int run_only_test = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) module_param(run_only_test, int, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) MODULE_PARM_DESC(run_only_test,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) "only run the test with this number (0-based !)");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) /* use vmalloc'ed buffers */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) static int use_vmalloc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) module_param(use_vmalloc, int, 0644);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) MODULE_PARM_DESC(use_vmalloc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) "use vmalloc'ed buffers instead of kmalloc'ed");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) /* check rx ranges */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) static int check_ranges = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) module_param(check_ranges, int, 0644);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) MODULE_PARM_DESC(check_ranges,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) "checks rx_buffer pattern are valid");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) /* the actual tests to execute */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) static struct spi_test spi_tests[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) .description = "tx/rx-transfer - start of page",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) .fill_option = FILL_COUNT_8,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) .iterate_len = { ITERATE_MAX_LEN },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) .iterate_tx_align = ITERATE_ALIGN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) .iterate_rx_align = ITERATE_ALIGN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) .transfer_count = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) .transfers = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) .tx_buf = TX(0),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) .rx_buf = RX(0),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) .description = "tx/rx-transfer - crossing PAGE_SIZE",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) .fill_option = FILL_COUNT_8,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) .iterate_len = { ITERATE_LEN },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) .iterate_tx_align = ITERATE_ALIGN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) .iterate_rx_align = ITERATE_ALIGN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) .transfer_count = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) .transfers = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) .tx_buf = TX(PAGE_SIZE - 4),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) .rx_buf = RX(PAGE_SIZE - 4),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) .description = "tx-transfer - only",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) .fill_option = FILL_COUNT_8,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) .iterate_len = { ITERATE_MAX_LEN },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) .iterate_tx_align = ITERATE_ALIGN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) .transfer_count = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) .transfers = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) .tx_buf = TX(0),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) .description = "rx-transfer - only",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) .fill_option = FILL_COUNT_8,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) .iterate_len = { ITERATE_MAX_LEN },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) .iterate_rx_align = ITERATE_ALIGN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) .transfer_count = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) .transfers = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) .rx_buf = RX(0),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) .description = "two tx-transfers - alter both",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) .fill_option = FILL_COUNT_8,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) .iterate_len = { ITERATE_LEN },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) .iterate_tx_align = ITERATE_ALIGN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) .iterate_transfer_mask = BIT(0) | BIT(1),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) .transfer_count = 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) .transfers = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) .tx_buf = TX(0),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) /* this is why we cant use ITERATE_MAX_LEN */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) .tx_buf = TX(SPI_TEST_MAX_SIZE_HALF),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) .description = "two tx-transfers - alter first",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) .fill_option = FILL_COUNT_8,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) .iterate_len = { ITERATE_MAX_LEN },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) .iterate_tx_align = ITERATE_ALIGN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) .iterate_transfer_mask = BIT(0),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) .transfer_count = 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) .transfers = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) .tx_buf = TX(64),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) .len = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) .tx_buf = TX(0),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) .description = "two tx-transfers - alter second",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) .fill_option = FILL_COUNT_8,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) .iterate_len = { ITERATE_MAX_LEN },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) .iterate_tx_align = ITERATE_ALIGN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) .iterate_transfer_mask = BIT(1),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) .transfer_count = 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) .transfers = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) .len = 16,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) .tx_buf = TX(0),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) .tx_buf = TX(64),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) .description = "two transfers tx then rx - alter both",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) .fill_option = FILL_COUNT_8,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) .iterate_len = { ITERATE_MAX_LEN },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) .iterate_tx_align = ITERATE_ALIGN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) .iterate_transfer_mask = BIT(0) | BIT(1),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) .transfer_count = 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) .transfers = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) .tx_buf = TX(0),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) .rx_buf = RX(0),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) .description = "two transfers tx then rx - alter tx",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) .fill_option = FILL_COUNT_8,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) .iterate_len = { ITERATE_MAX_LEN },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) .iterate_tx_align = ITERATE_ALIGN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) .iterate_transfer_mask = BIT(0),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) .transfer_count = 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) .transfers = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) .tx_buf = TX(0),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) .len = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) .rx_buf = RX(0),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) .description = "two transfers tx then rx - alter rx",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) .fill_option = FILL_COUNT_8,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) .iterate_len = { ITERATE_MAX_LEN },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) .iterate_tx_align = ITERATE_ALIGN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) .iterate_transfer_mask = BIT(1),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) .transfer_count = 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) .transfers = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) .len = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) .tx_buf = TX(0),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) .rx_buf = RX(0),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) .description = "two tx+rx transfers - alter both",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) .fill_option = FILL_COUNT_8,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) .iterate_len = { ITERATE_LEN },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) .iterate_tx_align = ITERATE_ALIGN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) .iterate_transfer_mask = BIT(0) | BIT(1),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) .transfer_count = 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) .transfers = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) .tx_buf = TX(0),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) .rx_buf = RX(0),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) /* making sure we align without overwrite
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) * the reason we can not use ITERATE_MAX_LEN
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) .tx_buf = TX(SPI_TEST_MAX_SIZE_HALF),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) .rx_buf = RX(SPI_TEST_MAX_SIZE_HALF),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) .description = "two tx+rx transfers - alter first",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) .fill_option = FILL_COUNT_8,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) .iterate_len = { ITERATE_MAX_LEN },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) .iterate_tx_align = ITERATE_ALIGN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) .iterate_transfer_mask = BIT(0),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) .transfer_count = 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) .transfers = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) /* making sure we align without overwrite */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) .tx_buf = TX(1024),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) .rx_buf = RX(1024),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) .len = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) /* making sure we align without overwrite */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) .tx_buf = TX(0),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) .rx_buf = RX(0),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) .description = "two tx+rx transfers - alter second",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) .fill_option = FILL_COUNT_8,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) .iterate_len = { ITERATE_MAX_LEN },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) .iterate_tx_align = ITERATE_ALIGN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) .iterate_transfer_mask = BIT(1),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) .transfer_count = 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) .transfers = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) .len = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) .tx_buf = TX(0),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) .rx_buf = RX(0),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) /* making sure we align without overwrite */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) .tx_buf = TX(1024),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) .rx_buf = RX(1024),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) .description = "two tx+rx transfers - delay after transfer",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) .fill_option = FILL_COUNT_8,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) .iterate_len = { ITERATE_MAX_LEN },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) .iterate_transfer_mask = BIT(0) | BIT(1),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) .transfer_count = 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) .transfers = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) .tx_buf = TX(0),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) .rx_buf = RX(0),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) .delay = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) .value = 1000,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) .unit = SPI_DELAY_UNIT_USECS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) .tx_buf = TX(0),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) .rx_buf = RX(0),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) .delay = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) .value = 1000,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) .unit = SPI_DELAY_UNIT_USECS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) { /* end of tests sequence */ }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) static int spi_loopback_test_probe(struct spi_device *spi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) if (loop_req || no_cs) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) spi->mode |= loop_req ? SPI_LOOP : 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) spi->mode |= no_cs ? SPI_NO_CS : 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) ret = spi_setup(spi);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) dev_err(&spi->dev, "SPI setup with SPI_LOOP or SPI_NO_CS failed (%d)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) dev_info(&spi->dev, "Executing spi-loopback-tests\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) ret = spi_test_run_tests(spi, spi_tests);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) dev_info(&spi->dev, "Finished spi-loopback-tests with return: %i\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) /* non const match table to permit to change via a module parameter */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) static struct of_device_id spi_loopback_test_of_match[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) { .compatible = "linux,spi-loopback-test", },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) { }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) /* allow to override the compatible string via a module_parameter */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) module_param_string(compatible, spi_loopback_test_of_match[0].compatible,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) sizeof(spi_loopback_test_of_match[0].compatible),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) 0000);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) MODULE_DEVICE_TABLE(of, spi_loopback_test_of_match);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) static struct spi_driver spi_loopback_test_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) .name = "spi-loopback-test",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) .owner = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) .of_match_table = spi_loopback_test_of_match,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) .probe = spi_loopback_test_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) module_spi_driver(spi_loopback_test_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) MODULE_AUTHOR("Martin Sperl <kernel@martin.sperl.org>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) MODULE_DESCRIPTION("test spi_driver to check core functionality");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) /*-------------------------------------------------------------------------*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) /* spi_test implementation */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) #define RANGE_CHECK(ptr, plen, start, slen) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) ((ptr >= start) && (ptr + plen <= start + slen))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) /* we allocate one page more, to allow for offsets */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) #define SPI_TEST_MAX_SIZE_PLUS (SPI_TEST_MAX_SIZE + PAGE_SIZE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) static void spi_test_print_hex_dump(char *pre, const void *ptr, size_t len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) /* limit the hex_dump */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) if (len < 1024) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) print_hex_dump(KERN_INFO, pre,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) DUMP_PREFIX_OFFSET, 16, 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) ptr, len, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) /* print head */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) print_hex_dump(KERN_INFO, pre,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) DUMP_PREFIX_OFFSET, 16, 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) ptr, 512, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) /* print tail */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) pr_info("%s truncated - continuing at offset %04zx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) pre, len - 512);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) print_hex_dump(KERN_INFO, pre,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) DUMP_PREFIX_OFFSET, 16, 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) ptr + (len - 512), 512, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) static void spi_test_dump_message(struct spi_device *spi,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) struct spi_message *msg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) bool dump_data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) struct spi_transfer *xfer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) u8 b;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) dev_info(&spi->dev, " spi_msg@%pK\n", msg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) if (msg->status)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) dev_info(&spi->dev, " status: %i\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) msg->status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) dev_info(&spi->dev, " frame_length: %i\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) msg->frame_length);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) dev_info(&spi->dev, " actual_length: %i\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) msg->actual_length);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) list_for_each_entry(xfer, &msg->transfers, transfer_list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) dev_info(&spi->dev, " spi_transfer@%pK\n", xfer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) dev_info(&spi->dev, " len: %i\n", xfer->len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) dev_info(&spi->dev, " tx_buf: %pK\n", xfer->tx_buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) if (dump_data && xfer->tx_buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) spi_test_print_hex_dump(" TX: ",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) xfer->tx_buf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) xfer->len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) dev_info(&spi->dev, " rx_buf: %pK\n", xfer->rx_buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) if (dump_data && xfer->rx_buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) spi_test_print_hex_dump(" RX: ",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) xfer->rx_buf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) xfer->len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) /* check for unwritten test pattern on rx_buf */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) if (xfer->rx_buf) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) for (i = 0 ; i < xfer->len ; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) b = ((u8 *)xfer->rx_buf)[xfer->len - 1 - i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) if (b != SPI_TEST_PATTERN_UNWRITTEN)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) if (i)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) dev_info(&spi->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) " rx_buf filled with %02x starts at offset: %i\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) SPI_TEST_PATTERN_UNWRITTEN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) xfer->len - i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) struct rx_ranges {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) struct list_head list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) u8 *start;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) u8 *end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) static int rx_ranges_cmp(void *priv, struct list_head *a, struct list_head *b)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) struct rx_ranges *rx_a = list_entry(a, struct rx_ranges, list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) struct rx_ranges *rx_b = list_entry(b, struct rx_ranges, list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) if (rx_a->start > rx_b->start)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) if (rx_a->start < rx_b->start)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) static int spi_check_rx_ranges(struct spi_device *spi,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) struct spi_message *msg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) void *rx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) struct spi_transfer *xfer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) struct rx_ranges ranges[SPI_TEST_MAX_TRANSFERS], *r;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) int i = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) LIST_HEAD(ranges_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) u8 *addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) /* loop over all transfers to fill in the rx_ranges */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) list_for_each_entry(xfer, &msg->transfers, transfer_list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) /* if there is no rx, then no check is needed */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) if (!xfer->rx_buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) /* fill in the rx_range */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) if (RANGE_CHECK(xfer->rx_buf, xfer->len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) rx, SPI_TEST_MAX_SIZE_PLUS)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) ranges[i].start = xfer->rx_buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) ranges[i].end = xfer->rx_buf + xfer->len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) list_add(&ranges[i].list, &ranges_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) i++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) /* if no ranges, then we can return and avoid the checks...*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) if (!i)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) /* sort the list */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) list_sort(NULL, &ranges_list, rx_ranges_cmp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) /* and iterate over all the rx addresses */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) for (addr = rx; addr < (u8 *)rx + SPI_TEST_MAX_SIZE_PLUS; addr++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) /* if we are the DO not write pattern,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) * then continue with the loop...
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) if (*addr == SPI_TEST_PATTERN_DO_NOT_WRITE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) /* check if we are inside a range */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) list_for_each_entry(r, &ranges_list, list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) /* if so then set to end... */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) if ((addr >= r->start) && (addr < r->end))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) addr = r->end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) /* second test after a (hopefull) translation */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) if (*addr == SPI_TEST_PATTERN_DO_NOT_WRITE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) /* if still not found then something has modified too much */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) /* we could list the "closest" transfer here... */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) dev_err(&spi->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) "loopback strangeness - rx changed outside of allowed range at: %pK\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) /* do not return, only set ret,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) * so that we list all addresses
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) ret = -ERANGE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) static int spi_test_check_elapsed_time(struct spi_device *spi,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) struct spi_test *test)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) unsigned long long estimated_time = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) unsigned long long delay_usecs = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) for (i = 0; i < test->transfer_count; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) struct spi_transfer *xfer = test->transfers + i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) unsigned long long nbits = (unsigned long long)BITS_PER_BYTE *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) xfer->len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) delay_usecs += xfer->delay.value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) if (!xfer->speed_hz)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) estimated_time += div_u64(nbits * NSEC_PER_SEC, xfer->speed_hz);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) estimated_time += delay_usecs * NSEC_PER_USEC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) if (test->elapsed_time < estimated_time) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) dev_err(&spi->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) "elapsed time %lld ns is shorter than minimum estimated time %lld ns\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) test->elapsed_time, estimated_time);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) static int spi_test_check_loopback_result(struct spi_device *spi,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) struct spi_message *msg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) void *tx, void *rx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) struct spi_transfer *xfer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) u8 rxb, txb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) size_t i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) /* checks rx_buffer pattern are valid with loopback or without */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) if (check_ranges) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) ret = spi_check_rx_ranges(spi, msg, rx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) /* if we run without loopback, then return now */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) if (!loopback)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) /* if applicable to transfer check that rx_buf is equal to tx_buf */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) list_for_each_entry(xfer, &msg->transfers, transfer_list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) /* if there is no rx, then no check is needed */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) if (!xfer->len || !xfer->rx_buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) /* so depending on tx_buf we need to handle things */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) if (xfer->tx_buf) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) for (i = 0; i < xfer->len; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) txb = ((u8 *)xfer->tx_buf)[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) rxb = ((u8 *)xfer->rx_buf)[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) if (txb != rxb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) goto mismatch_error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) /* first byte received */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) txb = ((u8 *)xfer->rx_buf)[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) /* first byte may be 0 or xff */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) if (!((txb == 0) || (txb == 0xff))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) dev_err(&spi->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) "loopback strangeness - we expect 0x00 or 0xff, but not 0x%02x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) txb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) /* check that all bytes are identical */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) for (i = 1; i < xfer->len; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) rxb = ((u8 *)xfer->rx_buf)[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) if (rxb != txb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) goto mismatch_error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) mismatch_error:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) dev_err(&spi->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) "loopback strangeness - transfer mismatch on byte %04zx - expected 0x%02x, but got 0x%02x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) i, txb, rxb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) static int spi_test_translate(struct spi_device *spi,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) void **ptr, size_t len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) void *tx, void *rx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) size_t off;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) /* return on null */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) if (!*ptr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) /* in the MAX_SIZE_HALF case modify the pointer */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) if (((size_t)*ptr) & SPI_TEST_MAX_SIZE_HALF)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) /* move the pointer to the correct range */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) *ptr += (SPI_TEST_MAX_SIZE_PLUS / 2) -
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) SPI_TEST_MAX_SIZE_HALF;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) /* RX range
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) * - we check against MAX_SIZE_PLUS to allow for automated alignment
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) if (RANGE_CHECK(*ptr, len, RX(0), SPI_TEST_MAX_SIZE_PLUS)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) off = *ptr - RX(0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) *ptr = rx + off;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) /* TX range */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) if (RANGE_CHECK(*ptr, len, TX(0), SPI_TEST_MAX_SIZE_PLUS)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) off = *ptr - TX(0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) *ptr = tx + off;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) dev_err(&spi->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) "PointerRange [%pK:%pK[ not in range [%pK:%pK[ or [%pK:%pK[\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) *ptr, *ptr + len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) RX(0), RX(SPI_TEST_MAX_SIZE),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) TX(0), TX(SPI_TEST_MAX_SIZE));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) static int spi_test_fill_pattern(struct spi_device *spi,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) struct spi_test *test)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) struct spi_transfer *xfers = test->transfers;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) u8 *tx_buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) size_t count = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675) int i, j;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) #ifdef __BIG_ENDIAN
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) #define GET_VALUE_BYTE(value, index, bytes) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) (value >> (8 * (bytes - 1 - count % bytes)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) #define GET_VALUE_BYTE(value, index, bytes) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) (value >> (8 * (count % bytes)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) /* fill all transfers with the pattern requested */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) for (i = 0; i < test->transfer_count; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) /* fill rx_buf with SPI_TEST_PATTERN_UNWRITTEN */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) if (xfers[i].rx_buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) memset(xfers[i].rx_buf, SPI_TEST_PATTERN_UNWRITTEN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) xfers[i].len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) /* if tx_buf is NULL then skip */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) tx_buf = (u8 *)xfers[i].tx_buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) if (!tx_buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695) /* modify all the transfers */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) for (j = 0; j < xfers[i].len; j++, tx_buf++, count++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697) /* fill tx */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) switch (test->fill_option) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) case FILL_MEMSET_8:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700) *tx_buf = test->fill_pattern;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702) case FILL_MEMSET_16:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) *tx_buf = GET_VALUE_BYTE(test->fill_pattern,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704) count, 2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706) case FILL_MEMSET_24:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707) *tx_buf = GET_VALUE_BYTE(test->fill_pattern,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) count, 3);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710) case FILL_MEMSET_32:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711) *tx_buf = GET_VALUE_BYTE(test->fill_pattern,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712) count, 4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714) case FILL_COUNT_8:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715) *tx_buf = count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717) case FILL_COUNT_16:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718) *tx_buf = GET_VALUE_BYTE(count, count, 2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720) case FILL_COUNT_24:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721) *tx_buf = GET_VALUE_BYTE(count, count, 3);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723) case FILL_COUNT_32:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) *tx_buf = GET_VALUE_BYTE(count, count, 4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726) case FILL_TRANSFER_BYTE_8:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727) *tx_buf = j;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729) case FILL_TRANSFER_BYTE_16:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730) *tx_buf = GET_VALUE_BYTE(j, j, 2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732) case FILL_TRANSFER_BYTE_24:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733) *tx_buf = GET_VALUE_BYTE(j, j, 3);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735) case FILL_TRANSFER_BYTE_32:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736) *tx_buf = GET_VALUE_BYTE(j, j, 4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738) case FILL_TRANSFER_NUM:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739) *tx_buf = i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742) dev_err(&spi->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 743) "unsupported fill_option: %i\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 744) test->fill_option);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 745) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 746) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 747) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 748) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 749)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 750) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 751) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 752)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 753) static int _spi_test_run_iter(struct spi_device *spi,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 754) struct spi_test *test,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 755) void *tx, void *rx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 756) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 757) struct spi_message *msg = &test->msg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 758) struct spi_transfer *x;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 759) int i, ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 760)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 761) /* initialize message - zero-filled via static initialization */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 762) spi_message_init_no_memset(msg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 763)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 764) /* fill rx with the DO_NOT_WRITE pattern */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 765) memset(rx, SPI_TEST_PATTERN_DO_NOT_WRITE, SPI_TEST_MAX_SIZE_PLUS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 766)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 767) /* add the individual transfers */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 768) for (i = 0; i < test->transfer_count; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 769) x = &test->transfers[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 770)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 771) /* patch the values of tx_buf */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 772) ret = spi_test_translate(spi, (void **)&x->tx_buf, x->len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 773) (void *)tx, rx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 774) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 775) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 776)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 777) /* patch the values of rx_buf */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 778) ret = spi_test_translate(spi, &x->rx_buf, x->len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 779) (void *)tx, rx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 780) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 781) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 782)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 783) /* and add it to the list */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 784) spi_message_add_tail(x, msg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 785) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 786)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 787) /* fill in the transfer buffers with pattern */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 788) ret = spi_test_fill_pattern(spi, test);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 789) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 790) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 791)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 792) /* and execute */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 793) if (test->execute_msg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 794) ret = test->execute_msg(spi, test, tx, rx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 795) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 796) ret = spi_test_execute_msg(spi, test, tx, rx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 797)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 798) /* handle result */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 799) if (ret == test->expected_return)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 800) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 801)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 802) dev_err(&spi->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 803) "test failed - test returned %i, but we expect %i\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 804) ret, test->expected_return);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 805)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 806) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 807) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 808)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 809) /* if it is 0, as we expected something else,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 810) * then return something special
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 811) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 812) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 813) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 814)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 815) static int spi_test_run_iter(struct spi_device *spi,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 816) const struct spi_test *testtemplate,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 817) void *tx, void *rx,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 818) size_t len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 819) size_t tx_off,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 820) size_t rx_off
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 821) )
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 822) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 823) struct spi_test test;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 824) int i, tx_count, rx_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 825)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 826) /* copy the test template to test */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 827) memcpy(&test, testtemplate, sizeof(test));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 828)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 829) /* if iterate_transfer_mask is not set,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 830) * then set it to first transfer only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 831) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 832) if (!(test.iterate_transfer_mask & (BIT(test.transfer_count) - 1)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 833) test.iterate_transfer_mask = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 834)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 835) /* count number of transfers with tx/rx_buf != NULL */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 836) rx_count = tx_count = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 837) for (i = 0; i < test.transfer_count; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 838) if (test.transfers[i].tx_buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 839) tx_count++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 840) if (test.transfers[i].rx_buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 841) rx_count++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 842) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 843)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 844) /* in some iteration cases warn and exit early,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 845) * as there is nothing to do, that has not been tested already...
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 846) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 847) if (tx_off && (!tx_count)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 848) dev_warn_once(&spi->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 849) "%s: iterate_tx_off configured with tx_buf==NULL - ignoring\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 850) test.description);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 851) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 852) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 853) if (rx_off && (!rx_count)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 854) dev_warn_once(&spi->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 855) "%s: iterate_rx_off configured with rx_buf==NULL - ignoring\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 856) test.description);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 857) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 858) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 859)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 860) /* write out info */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 861) if (!(len || tx_off || rx_off)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 862) dev_info(&spi->dev, "Running test %s\n", test.description);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 863) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 864) dev_info(&spi->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 865) " with iteration values: len = %zu, tx_off = %zu, rx_off = %zu\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 866) len, tx_off, rx_off);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 867) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 868)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 869) /* update in the values from iteration values */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 870) for (i = 0; i < test.transfer_count; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 871) /* only when bit in transfer mask is set */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 872) if (!(test.iterate_transfer_mask & BIT(i)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 873) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 874) test.transfers[i].len = len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 875) if (test.transfers[i].tx_buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 876) test.transfers[i].tx_buf += tx_off;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 877) if (test.transfers[i].rx_buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 878) test.transfers[i].rx_buf += rx_off;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 879) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 880)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 881) /* and execute */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 882) return _spi_test_run_iter(spi, &test, tx, rx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 883) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 884)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 885) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 886) * spi_test_execute_msg - default implementation to run a test
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 887) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 888) * @spi: @spi_device on which to run the @spi_message
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 889) * @test: the test to execute, which already contains @msg
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 890) * @tx: the tx buffer allocated for the test sequence
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 891) * @rx: the rx buffer allocated for the test sequence
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 892) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 893) * Returns: error code of spi_sync as well as basic error checking
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 894) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 895) int spi_test_execute_msg(struct spi_device *spi, struct spi_test *test,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 896) void *tx, void *rx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 897) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 898) struct spi_message *msg = &test->msg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 899) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 900) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 901)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 902) /* only if we do not simulate */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 903) if (!simulate_only) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 904) ktime_t start;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 905)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 906) /* dump the complete message before and after the transfer */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 907) if (dump_messages == 3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 908) spi_test_dump_message(spi, msg, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 909)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 910) start = ktime_get();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 911) /* run spi message */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 912) ret = spi_sync(spi, msg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 913) test->elapsed_time = ktime_to_ns(ktime_sub(ktime_get(), start));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 914) if (ret == -ETIMEDOUT) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 915) dev_info(&spi->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 916) "spi-message timed out - rerunning...\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 917) /* rerun after a few explicit schedules */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 918) for (i = 0; i < 16; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 919) schedule();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 920) ret = spi_sync(spi, msg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 921) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 922) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 923) dev_err(&spi->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 924) "Failed to execute spi_message: %i\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 925) ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 926) goto exit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 927) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 928)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 929) /* do some extra error checks */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 930) if (msg->frame_length != msg->actual_length) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 931) dev_err(&spi->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 932) "actual length differs from expected\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 933) ret = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 934) goto exit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 935) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 936)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 937) /* run rx-buffer tests */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 938) ret = spi_test_check_loopback_result(spi, msg, tx, rx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 939) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 940) goto exit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 941)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 942) ret = spi_test_check_elapsed_time(spi, test);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 943) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 944)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 945) /* if requested or on error dump message (including data) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 946) exit:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 947) if (dump_messages || ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 948) spi_test_dump_message(spi, msg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 949) (dump_messages >= 2) || (ret));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 950)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 951) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 952) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 953) EXPORT_SYMBOL_GPL(spi_test_execute_msg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 954)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 955) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 956) * spi_test_run_test - run an individual spi_test
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 957) * including all the relevant iterations on:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 958) * length and buffer alignment
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 959) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 960) * @spi: the spi_device to send the messages to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 961) * @test: the test which we need to execute
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 962) * @tx: the tx buffer allocated for the test sequence
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 963) * @rx: the rx buffer allocated for the test sequence
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 964) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 965) * Returns: status code of spi_sync or other failures
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 966) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 967)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 968) int spi_test_run_test(struct spi_device *spi, const struct spi_test *test,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 969) void *tx, void *rx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 970) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 971) int idx_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 972) size_t len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 973) size_t tx_align, rx_align;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 974) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 975)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 976) /* test for transfer limits */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 977) if (test->transfer_count >= SPI_TEST_MAX_TRANSFERS) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 978) dev_err(&spi->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 979) "%s: Exceeded max number of transfers with %i\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 980) test->description, test->transfer_count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 981) return -E2BIG;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 982) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 983)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 984) /* setting up some values in spi_message
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 985) * based on some settings in spi_master
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 986) * some of this can also get done in the run() method
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 987) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 988)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 989) /* iterate over all the iterable values using macros
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 990) * (to make it a bit more readable...
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 991) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 992) #define FOR_EACH_ALIGNMENT(var) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 993) for (var = 0; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 994) var < (test->iterate_##var ? \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 995) (spi->master->dma_alignment ? \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 996) spi->master->dma_alignment : \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 997) test->iterate_##var) : \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 998) 1); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 999) var++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1000)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1001) for (idx_len = 0; idx_len < SPI_TEST_MAX_ITERATE &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1002) (len = test->iterate_len[idx_len]) != -1; idx_len++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1003) FOR_EACH_ALIGNMENT(tx_align) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1004) FOR_EACH_ALIGNMENT(rx_align) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1005) /* and run the iteration */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1006) ret = spi_test_run_iter(spi, test,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1007) tx, rx,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1008) len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1009) tx_align,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1010) rx_align);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1011) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1012) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1013) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1014) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1015) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1016)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1017) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1018) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1019) EXPORT_SYMBOL_GPL(spi_test_run_test);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1020)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1021) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1022) * spi_test_run_tests - run an array of spi_messages tests
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1023) * @spi: the spi device on which to run the tests
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1024) * @tests: NULL-terminated array of @spi_test
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1025) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1026) * Returns: status errors as per @spi_test_run_test()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1027) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1028)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1029) int spi_test_run_tests(struct spi_device *spi,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1030) struct spi_test *tests)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1031) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1032) char *rx = NULL, *tx = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1033) int ret = 0, count = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1034) struct spi_test *test;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1035)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1036) /* allocate rx/tx buffers of 128kB size without devm
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1037) * in the hope that is on a page boundary
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1038) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1039) if (use_vmalloc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1040) rx = vmalloc(SPI_TEST_MAX_SIZE_PLUS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1041) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1042) rx = kzalloc(SPI_TEST_MAX_SIZE_PLUS, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1043) if (!rx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1044) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1045)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1046)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1047) if (use_vmalloc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1048) tx = vmalloc(SPI_TEST_MAX_SIZE_PLUS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1049) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1050) tx = kzalloc(SPI_TEST_MAX_SIZE_PLUS, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1051) if (!tx) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1052) ret = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1053) goto err_tx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1054) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1055)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1056) /* now run the individual tests in the table */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1057) for (test = tests, count = 0; test->description[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1058) test++, count++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1059) /* only run test if requested */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1060) if ((run_only_test > -1) && (count != run_only_test))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1061) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1062) /* run custom implementation */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1063) if (test->run_test)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1064) ret = test->run_test(spi, test, tx, rx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1065) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1066) ret = spi_test_run_test(spi, test, tx, rx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1067) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1068) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1069) /* add some delays so that we can easily
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1070) * detect the individual tests when using a logic analyzer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1071) * we also add scheduling to avoid potential spi_timeouts...
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1072) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1073) mdelay(100);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1074) schedule();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1075) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1076)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1077) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1078) kvfree(tx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1079) err_tx:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1080) kvfree(rx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1081) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1082) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1083) EXPORT_SYMBOL_GPL(spi_test_run_tests);
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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