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Make it possible to get/set MMC frequency from camcontrol

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Enhance camcontrol(8) so that it's possible to manually set frequency for SD/MMC cards.
While here, display more information about the current controller, such as
supported operating modes and VCCQ voltages, as well as current VCCQ voltage.

Reviewed by:	manu
Approved by:	imp (mentor)
Differential Revision:	https://reviews.freebsd.org/D25795
This commit is contained in:
Ilya Bakulin 2020-07-24 21:14:59 +00:00
parent 9977c593a7
commit badc50c270
1 changed files with 77 additions and 6 deletions
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83
sbin/camcontrol/camcontrol.c
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@ -190,7 +190,7 @@ static struct camcontrol_opts option_table[] = {
{"rescan", CAM_CMD_RESCAN, CAM_ARG_NONE, NULL},
{"reset", CAM_CMD_RESET, CAM_ARG_NONE, NULL},
{"cmd", CAM_CMD_SCSI_CMD, CAM_ARG_NONE, scsicmd_opts},
{"mmcsdcmd", CAM_CMD_MMCSD_CMD, CAM_ARG_NONE, "c:a:f:Wb:l:41S:I"},
{"mmcsdcmd", CAM_CMD_MMCSD_CMD, CAM_ARG_NONE, "c:a:F:f:Wb:l:41S:I"},
{"command", CAM_CMD_SCSI_CMD, CAM_ARG_NONE, scsicmd_opts},
{"smpcmd", CAM_CMD_SMP_CMD, CAM_ARG_NONE, "r:R:"},
{"smprg", CAM_CMD_SMP_RG, CAM_ARG_NONE, smprg_opts},
@ -7833,10 +7833,12 @@ mmcsdcmd(struct cam_device *device, int argc, char **argv, char *combinedopt,
int retval;
int is_write = 0;
int is_bw_4 = 0, is_bw_1 = 0;
int is_frequency = 0;
int is_highspeed = 0, is_stdspeed = 0;
int is_info_request = 0;
int flags = 0;
uint8_t mmc_data_byte = 0;
uint32_t mmc_frequency = 0;
/* For IO_RW_EXTENDED command */
uint8_t *mmc_data = NULL;
@ -7873,6 +7875,10 @@ mmcsdcmd(struct cam_device *device, int argc, char **argv, char *combinedopt,
case 'I':
is_info_request = 1;
break;
case 'F':
is_frequency = 1;
mmc_frequency = strtol(optarg, NULL, 0);
break;
case 'c':
mmc_opcode = strtol(optarg, NULL, 0);
if (mmc_opcode < 0) {
@ -7978,6 +7984,23 @@ mmcsdcmd(struct cam_device *device, int argc, char **argv, char *combinedopt,
return (retval);
}
if (is_frequency) {
struct ccb_trans_settings_mmc *cts;
ccb->ccb_h.func_code = XPT_SET_TRAN_SETTINGS;
ccb->ccb_h.flags = 0;
cts = &ccb->cts.proto_specific.mmc;
cts->ios.clock = mmc_frequency;
cts->ios_valid = MMC_CLK;
if (((retval = cam_send_ccb(device, ccb)) < 0)
|| ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP)) {
warn("Error sending command");
} else {
printf("Parameters set OK\n");
}
cam_freeccb(ccb);
return (retval);
}
// Switch bus speed instead of sending IO command
if (is_stdspeed || is_highspeed) {
struct ccb_trans_settings_mmc *cts;
@ -8011,13 +8034,48 @@ mmcsdcmd(struct cam_device *device, int argc, char **argv, char *combinedopt,
printf("Host OCR: 0x%x\n", cts->host_ocr);
printf("Min frequency: %u KHz\n", cts->host_f_min / 1000);
printf("Max frequency: %u MHz\n", cts->host_f_max / 1000000);
printf("Supported bus width: ");
printf("Supported bus width:\n");
if (cts->host_caps & MMC_CAP_4_BIT_DATA)
printf(" 4 bit\n");
if (cts->host_caps & MMC_CAP_8_BIT_DATA)
printf(" 8 bit\n");
printf("\nCurrent settings:\n");
printf("Bus width: ");
printf("Supported operating modes:\n");
if (cts->host_caps & MMC_CAP_HSPEED)
printf(" Can do High Speed transfers\n");
if (cts->host_caps & MMC_CAP_UHS_SDR12)
printf(" Can do UHS SDR12\n");
if (cts->host_caps & MMC_CAP_UHS_SDR25)
printf(" Can do UHS SDR25\n");
if (cts->host_caps & MMC_CAP_UHS_SDR50)
printf(" Can do UHS SDR50\n");
if (cts->host_caps & MMC_CAP_UHS_SDR104)
printf(" Can do UHS SDR104\n");
if (cts->host_caps & MMC_CAP_UHS_DDR50)
printf(" Can do UHS DDR50\n");
if (cts->host_caps & MMC_CAP_MMC_DDR52_120)
printf(" Can do eMMC DDR52 at 1.2V\n");
if (cts->host_caps & MMC_CAP_MMC_DDR52_180)
printf(" Can do eMMC DDR52 at 1.8V\n");
if (cts->host_caps & MMC_CAP_MMC_HS200_120)
printf(" Can do eMMC HS200 at 1.2V\n");
if (cts->host_caps & MMC_CAP_MMC_HS200_180)
printf(" Can do eMMC HS200 at 1.8V\n");
if (cts->host_caps & MMC_CAP_MMC_HS400_120)
printf(" Can do eMMC HS400 at 1.2V\n");
if (cts->host_caps & MMC_CAP_MMC_HS400_180)
printf(" Can do eMMC HS400 at 1.8V\n");
printf("Supported VCCQ voltages:\n");
if (cts->host_caps & MMC_CAP_SIGNALING_120)
printf(" 1.2V\n");
if (cts->host_caps & MMC_CAP_SIGNALING_180)
printf(" 1.8V\n");
if (cts->host_caps & MMC_CAP_SIGNALING_330)
printf(" 3.3V\n");
printf("Current settings:\n");
printf(" Bus width: ");
switch (cts->ios.bus_width) {
case bus_width_1:
printf("1 bit\n");
@ -8029,10 +8087,23 @@ mmcsdcmd(struct cam_device *device, int argc, char **argv, char *combinedopt,
printf("8 bit\n");
break;
}
printf("Freq: %d.%03d MHz%s\n",
printf(" Freq: %d.%03d MHz%s\n",
cts->ios.clock / 1000000,
(cts->ios.clock / 1000) % 1000,
cts->ios.timing == bus_timing_hs ? "(high-speed timing)" : "");
cts->ios.timing == bus_timing_hs ? " (high-speed timing)" : "");
printf(" VCCQ: ");
switch (cts->ios.vccq) {
case vccq_330:
printf("3.3V\n");
break;
case vccq_180:
printf("1.8V\n");
break;
case vccq_120:
printf("1.2V\n");
break;
}
return (0);
}