Re: MNT Reform2 USB LCP flash

Staffan Thomen <[email protected]> Sun, 4 Feb 2024 23:58:18 +0200
Newsgroups	gmane.os.netbsd.devel.kernel
Message-ID	<[email protected]>
On 2/4/24 19:36, Michael van Elst wrote:

> There seems to be nothing yet for NO_START_STOP. There is
> 
> PQUIRK_START
> 
> that forces a start at attach time. But at open time when the unit 
> still does not report ready, we issue the comamnd again (and fail if 
> it doesn't succeed). We probably need another quirk PQUIRK_NOSTART 
> and check it in scsipi_start() similar to the PQUIRK_NODOORLOCK in 
> scsipi_prevent().

Right, with this information is was very easy to put together a patch,
and I can now mount the LPC fake umass device on my netbsd laptop. I
didn't try writing the firmware yet but I'm sure that'll work too.

Patch follows for anyone who might have need. I assume a PR is the best
way of getting this committed?

Staffan (will probably be happily insomniac from this and zombie 
tomorrow :-)

--8<--

# HG changeset patch
# User Staffan Thomen <[email protected]>
# Date 1707080552 0
#      Sun Feb 04 21:02:32 2024 +0000
# Branch netbsd-10
# Node ID f368df5ceae4dbeb3a6a10e7e8b3c6668dc08303
# Parent  7ddaaaeb813a1bceaf4190cb6c3444cc3c225ebb
Round up cylinders to 1 if the device is so small it would be 0

diff -r 7ddaaaeb813a -r f368df5ceae4 sys/dev/scsipi/sd.c
--- a/sys/dev/scsipi/sd.c	Tue Jan 16 08:28:51 2024 +0000
+++ b/sys/dev/scsipi/sd.c	Sun Feb 04 21:02:32 2024 +0000
@@ -1769,6 +1769,8 @@
  		dp->heads = 64;
  		dp->sectors = 32;
  		dp->cyls = dp->disksize / (64 * 32);
+		if (dp->cyls == 0)
+			dp->cyls = 1;
  	}
  	dp->rot_rate = 3600;

# HG changeset patch
# User Staffan Thomen <[email protected]>
# Date 1707080615 0
#      Sun Feb 04 21:03:35 2024 +0000
# Branch netbsd-10
# Node ID fb8c5f27a9473039c3bc82d453164ab2c201d5f4
# Parent  f368df5ceae4dbeb3a6a10e7e8b3c6668dc08303
Add the PQUIRK_NOSTART quirk to prevent a START command from being sent
to devices that don't support them

diff -r f368df5ceae4 -r fb8c5f27a947 sys/dev/scsipi/scsipi_base.c
--- a/sys/dev/scsipi/scsipi_base.c	Sun Feb 04 21:02:32 2024 +0000
+++ b/sys/dev/scsipi/scsipi_base.c	Sun Feb 04 21:03:35 2024 +0000
@@ -1312,6 +1312,9 @@
  {
  	struct scsipi_start_stop cmd;

+	if (periph->periph_quirks & PQUIRK_NOSTART)
+		return 0;
+
  	memset(&cmd, 0, sizeof(cmd));
  	cmd.opcode = START_STOP;
  	cmd.byte2 = 0x00;
diff -r f368df5ceae4 -r fb8c5f27a947 sys/dev/scsipi/scsipiconf.h
--- a/sys/dev/scsipi/scsipiconf.h	Sun Feb 04 21:02:32 2024 +0000
+++ b/sys/dev/scsipi/scsipiconf.h	Sun Feb 04 21:03:35 2024 +0000
@@ -504,6 +504,7 @@
  #define PQUIRK_NOREPSUPPOPC     0x01000000      /* does not grok
  						   REPORT SUPPORTED OPCODES
  						   to fetch device timeouts */
+#define PQUIRK_NOSTART      0x02000000	/* does not support START STOP */
  /*
   * Error values an adapter driver may return
   */
# HG changeset patch
# User Staffan Thomen <[email protected]>
# Date 1707080713 0
#      Sun Feb 04 21:05:13 2024 +0000
# Branch netbsd-10
# Node ID cb668c56dec8cabbe5d0f6ed362d35db3faef28a
# Parent  fb8c5f27a9473039c3bc82d453164ab2c201d5f4
Add the NXP vendor and the LPC1XXX product to apply its quirks

diff -r fb8c5f27a947 -r cb668c56dec8 sys/dev/usb/umass_quirks.c
--- a/sys/dev/usb/umass_quirks.c	Sun Feb 04 21:03:35 2024 +0000
+++ b/sys/dev/usb/umass_quirks.c	Sun Feb 04 21:05:13 2024 +0000
@@ -343,6 +343,16 @@
  	  UMATCH_VENDOR_PRODUCT,
  	  NULL, NULL
  	},
+
+	/* NXP LPC1xxx series ISP (In-System Programming) devices */
+
+	{ { USB_VENDOR_NXP, USB_PRODUCT_NXP_LPC1XXX },
+	  UMASS_WPROTO_UNSPEC, UMASS_CPROTO_UNSPEC,
+	  0,
+	  PQUIRK_NOSTART | PQUIRK_NODOORLOCK | PQUIRK_NOSYNCCACHE |
PQUIRK_ONLYBIG,
+	  UMATCH_VENDOR_PRODUCT,
+	  NULL, NULL
+	}
  };

  const struct umass_quirk *
diff -r fb8c5f27a947 -r cb668c56dec8 sys/dev/usb/usbdevs
--- a/sys/dev/usb/usbdevs	Sun Feb 04 21:03:35 2024 +0000
+++ b/sys/dev/usb/usbdevs	Sun Feb 04 21:05:13 2024 +0000
@@ -563,6 +563,7 @@
  vendor LINUXFOUNDATION	0x1d6b	Linux Foundation
  vendor CINTERION	0x1e2d	Cinterion
  vendor AIRTIES		0x1eda	AirTies
+vendor NXP          0x1fc9  NXP
  vendor DLINK		0x2001	D-Link
  vendor PLANEX2		0x2019	Planex Communications
  vendor ENCORE		0x203d	Encore
@@ -2572,6 +2573,9 @@
  product NOVATEL2 U760_DRIVER	0x5030	Novatel Wireless U760 Windows/Mac
Driver
  product NOVATEL2 U760		0x6000	Novatel 760USB

+/* NXP products */
+product NXP LPC1XXX         0x000b  NXP LPC1xxx IFLASH
+
  /* Olympus products */
  product OLYMPUS C1		0x0102	C-1 Digital Camera
  product OLYMPUS C700		0x0105	C-700 Ultra Zoom
OpenPGP_signature.asc (application/pgp-signature, 665 B)