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pcie: shell: Add dump and BDF string arguments

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Add argument dump for dumping first 16 PCI configuration space
registers same way lspci -x is doing. Also parse bdf string as
argument. pcie can be called following way:

  uart:~$ pcie 0:1f.4
   ...
  uart:~$ pcie 0:1f.4 dump
   ...

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
This commit is contained in:
Andrei Emeltchenko 2022-08-17 12:18:16 +03:00 committed by Carles Cufí
parent 27eb12ed48
commit 3029d2fba8
1 changed files with 74 additions and 2 deletions
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76
drivers/pcie/host/shell.c
View file

@ -4,6 +4,7 @@
* SPDX-License-Identifier: Apache-2.0
*/
#include <stdlib.h>
#include <zephyr/shell/shell.h>
#include <zephyr/drivers/pcie/pcie.h>
@ -93,7 +94,53 @@ static void show_bars(const struct shell *shell, pcie_bdf_t bdf)
}
}
static void show(const struct shell *shell, pcie_bdf_t bdf)
static void pcie_dump(const struct shell *shell, pcie_bdf_t bdf)
{
for (int i = 0; i < 16; i++) {
uint32_t val = pcie_conf_read(bdf, i);
for (int j = 0; j < 4; j++) {
shell_fprintf(shell, SHELL_NORMAL, "%02x ",
(uint8_t)val);
val >>= 8;
}
if (((i + 1) % 4) == 0) {
shell_fprintf(shell, SHELL_NORMAL, "\n");
}
}
}
static pcie_bdf_t get_bdf(char *str)
{
int bus, dev, func;
char *tok, *state;
tok = strtok_r(str, ":", &state);
if (tok == NULL) {
return PCIE_BDF_NONE;
}
bus = strtoul(tok, NULL, 16);
tok = strtok_r(NULL, ".", &state);
if (tok == NULL) {
return PCIE_BDF_NONE;
}
dev = strtoul(tok, NULL, 16);
tok = strtok_r(NULL, ".", &state);
if (tok == NULL) {
return PCIE_BDF_NONE;
}
func = strtoul(tok, NULL, 16);
return PCIE_BDF(bus, dev, func);
}
static void show(const struct shell *shell, pcie_bdf_t bdf, bool dump)
{
uint32_t data;
unsigned int irq;
@ -133,18 +180,43 @@ static void show(const struct shell *shell, pcie_bdf_t bdf)
" wired interrupt on IRQ %d\n", irq);
}
}
if (dump) {
pcie_dump(shell, bdf);
}
}
static int cmd_pcie_ls(const struct shell *shell, size_t argc, char **argv)
{
pcie_bdf_t bdf = PCIE_BDF_NONE;
bool dump = false;
int bus;
int dev;
int func;
for (int i = 1; i < argc; i++) {
/* Check dump argument */
if (strncmp(argv[i], "dump", 4) == 0) {
dump = true;
continue;
}
/* Check BDF string of PCI device */
if (bdf == PCIE_BDF_NONE) {
bdf = get_bdf(argv[i]);
}
}
/* Show only specified device */
if (bdf != PCIE_BDF_NONE) {
show(shell, bdf, dump);
return 0;
}
for (bus = 0; bus <= PCIE_MAX_BUS; ++bus) {
for (dev = 0; dev <= PCIE_MAX_DEV; ++dev) {
for (func = 0; func <= PCIE_MAX_FUNC; ++func) {
show(shell, PCIE_BDF(bus, dev, func));
show(shell, PCIE_BDF(bus, dev, func), dump);
}
}
}