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Date:      Fri, 24 Jul 2020 23:26:43 +0200
From:      Gordon Bergling <gbe@freebsd.org>
To:        Ilya Bakulin <kibab@freebsd.org>
Cc:        src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org
Subject:   Re: svn commit: r363497 - head/sbin/camcontrol
Message-ID:  <20200724212643.GA68779@lion.0xfce3.net>
In-Reply-To: <202007242114.06OLExIJ032705@repo.freebsd.org>
References:  <202007242114.06OLExIJ032705@repo.freebsd.org>

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Thanks,

this will become very handy when working on IO infrastructure.

--Gordon

On Fri, Jul 24, 2020 at 09:14:59PM +0000, Ilya Bakulin wrote:
> Author: kibab
> Date: Fri Jul 24 21:14:59 2020
> New Revision: 363497
> URL: https://svnweb.freebsd.org/changeset/base/363497
>=20
> Log:
>   Make it possible to get/set MMC frequency from camcontrol
>  =20
>   Enhance camcontrol(8) so that it's possible to manually set frequency f=
or 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 vo=
ltage.
>  =20
>   Reviewed by:	manu
>   Approved by:	imp (mentor)
>   Differential Revision:	https://reviews.freebsd.org/D25795
>=20
> Modified:
>   head/sbin/camcontrol/camcontrol.c
>=20
> Modified: head/sbin/camcontrol/camcontrol.c
> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D
> --- head/sbin/camcontrol/camcontrol.c	Fri Jul 24 20:54:07 2020	(r363496)
> +++ head/sbin/camcontrol/camcontrol.c	Fri Jul 24 21:14:59 2020	(r363497)
> @@ -190,7 +190,7 @@ static struct camcontrol_opts option_table[] =3D {
>  	{"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, cha=
r **a
>  	int retval;
>  	int is_write =3D 0;
>  	int is_bw_4 =3D 0, is_bw_1 =3D 0;
> +	int is_frequency =3D 0;
>  	int is_highspeed =3D 0, is_stdspeed =3D 0;
>  	int is_info_request =3D 0;
>  	int flags =3D 0;
>  	uint8_t mmc_data_byte =3D 0;
> +	uint32_t mmc_frequency =3D 0;
> =20
>  	/* For IO_RW_EXTENDED command */
>  	uint8_t *mmc_data =3D NULL;
> @@ -7873,6 +7875,10 @@ mmcsdcmd(struct cam_device *device, int argc, char=
 **a
>  		case 'I':
>  			is_info_request =3D 1;
>  			break;
> +		case 'F':
> +			is_frequency =3D 1;
> +			mmc_frequency =3D strtol(optarg, NULL, 0);
> +			break;
>  		case 'c':
>  			mmc_opcode =3D strtol(optarg, NULL, 0);
>  			if (mmc_opcode < 0) {
> @@ -7978,6 +7984,23 @@ mmcsdcmd(struct cam_device *device, int argc, char=
 **a
>  		return (retval);
>  	}
> =20
> +	if (is_frequency) {
> +		struct ccb_trans_settings_mmc *cts;
> +		ccb->ccb_h.func_code =3D XPT_SET_TRAN_SETTINGS;
> +		ccb->ccb_h.flags =3D 0;
> +		cts =3D &ccb->cts.proto_specific.mmc;
> +		cts->ios.clock =3D mmc_frequency;
> +		cts->ios_valid =3D MMC_CLK;
> +		if (((retval =3D cam_send_ccb(device, ccb)) < 0)
> +		    || ((ccb->ccb_h.status & CAM_STATUS_MASK) !=3D 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, cha=
r **a
>  		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, cha=
r **a
>  			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 =3D=3D bus_timing_hs ? "(high-speed timing)" : =
"");
> +		       cts->ios.timing =3D=3D 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);
>  	}
> =20
> _______________________________________________
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> https://lists.freebsd.org/mailman/listinfo/svn-src-head
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