From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from metis.ext.pengutronix.de ([2001:6f8:1178:4:290:27ff:fe1d:cc33]) by merlin.infradead.org with esmtps (Exim 4.76 #1 (Red Hat Linux)) id 1U3PMA-00089o-KO for barebox@lists.infradead.org; Thu, 07 Feb 2013 11:09:31 +0000 From: Sascha Hauer Date: Thu, 7 Feb 2013 12:09:27 +0100 Message-Id: <1360235367-30530-2-git-send-email-s.hauer@pengutronix.de> In-Reply-To: <1360235367-30530-1-git-send-email-s.hauer@pengutronix.de> References: <1360235367-30530-1-git-send-email-s.hauer@pengutronix.de> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: barebox-bounces@lists.infradead.org Errors-To: barebox-bounces+u.kleine-koenig=pengutronix.de@lists.infradead.org Subject: [PATCH 2/2] miitool: Add support for examing mdio bus To: barebox@lists.infradead.org Current miitool usage is limited to a single phy on a mdio bus. For debugging purposes it is useful to be able to examine a mdio bus instead of a single phy only. This adds support for this to the miitool command. Signed-off-by: Sascha Hauer --- commands/miitool.c | 94 +++++++++++++++++++++++++++++++++++++++++----------- 1 file changed, 75 insertions(+), 19 deletions(-) diff --git a/commands/miitool.c b/commands/miitool.c index 3a9ac45..b9e2333 100644 --- a/commands/miitool.c +++ b/commands/miitool.c @@ -37,23 +37,36 @@ #include #include #include +#include -static u16 mdio_read(int fd, int offset) +static int phy_fd; + +static u16 mdio_file_read(int offset) { int ret; u16 buf; - ret = lseek(fd, offset << 1, SEEK_SET); + ret = lseek(phy_fd, offset << 1, SEEK_SET); if (ret < 0) return 0; - ret = read(fd, &buf, sizeof(u16)); + ret = read(phy_fd, &buf, sizeof(u16)); if (ret < 0) return 0; return buf; } +static struct mii_bus *mii_bus; +static int mii_address; + +static u16 mdio_bus_read(int offset) +{ + return mdiobus_read(mii_bus, mii_address, offset); +} + +static u16 (*mdio_read)(int offset); + /* Table of known MII's */ static const struct { u_short id1, id2; @@ -101,7 +114,7 @@ static char *media_list(int mask, int best) return buf; } -static int show_basic_mii(int fd, int verbose) +static int show_basic_mii(int verbose) { char buf[100]; int i, mii_val[32]; @@ -109,9 +122,9 @@ static int show_basic_mii(int fd, int verbose) /* Some bits in the BMSR are latched, but we can't rely on being the only reader, so only the current values are meaningful */ - mdio_read(fd, MII_BMSR); + mdio_read(MII_BMSR); for (i = 0; i < ((verbose > 1) ? 32 : 8); i++) - mii_val[i] = mdio_read(fd, i); + mii_val[i] = mdio_read(i); if (mii_val[MII_BMCR] == 0xffff) { fprintf(stderr, " No MII transceiver present!.\n"); @@ -213,18 +226,25 @@ static int show_basic_mii(int fd, int verbose) static int do_miitool(int argc, char *argv[]) { - char *filename; + char *filename = NULL; + char *devname = NULL; int opt; int argc_min; - int fd; int verbose; + int address = -1; verbose = 0; - while ((opt = getopt(argc, argv, "v")) > 0) { + while ((opt = getopt(argc, argv, "vd:a:")) > 0) { switch (opt) { case 'v': verbose++; break; + case 'd': + devname = optarg; + break; + case 'a': + address = simple_strtoul(optarg, NULL, 0); + break; default: return COMMAND_ERROR_USAGE; } @@ -232,27 +252,63 @@ static int do_miitool(int argc, char *argv[]) argc_min = optind + 1; - if (argc < argc_min) + if (argc >= argc_min) + filename = argv[optind]; + + if (filename && devname) { + printf("both filename and devicename given\n"); return COMMAND_ERROR_USAGE; + } - filename = argv[optind]; + if (!filename && !devname) { + printf("no filename or devicename given\n"); + return COMMAND_ERROR_USAGE; + } + + if (filename) { + phy_fd = open(filename, O_RDONLY); + if (phy_fd < 0) { + printf("unable to read %s\n", filename); + return COMMAND_ERROR; + } + + mdio_read = mdio_file_read; + + show_basic_mii(verbose); + } else { + mii_bus = mdiobus_find(devname); + + if (!mii_bus) + return -ENODEV; - fd = open(filename, O_RDONLY); - if (fd < 0) { - printf("unable to read %s\n", filename); - return COMMAND_ERROR; + mdio_read = mdio_bus_read; + if (address < 0) { + for (mii_address = 0; mii_address < PHY_MAX_ADDR; mii_address++) { + printf("`---- phyadr %d:\n", + mii_address); + show_basic_mii(verbose); + } + } else { + mii_address = address; + show_basic_mii(verbose); + } } - show_basic_mii(fd, verbose); - close(fd); + if (filename) + close(phy_fd); return COMMAND_SUCCESS; } BAREBOX_CMD_HELP_START(miitool) -BAREBOX_CMD_HELP_USAGE("miitool [[[-v] -v] -v] \n") -BAREBOX_CMD_HELP_SHORT("view status for MII .\n") +BAREBOX_CMD_HELP_USAGE("miitool [OPTIONS] [phy]\n") +BAREBOX_CMD_HELP_SHORT("view status mii phy device status\n") +BAREBOX_CMD_HELP_SHORT("Use [phy] to view a phy connected to an ethernet device\n") +BAREBOX_CMD_HELP_SHORT("or -d [-a ] to examine a mii bus\n") +BAREBOX_CMD_HELP_OPT("-v", "\tverbose, may be given multiple times\n") +BAREBOX_CMD_HELP_OPT("-d ", "work on miibus \n") +BAREBOX_CMD_HELP_OPT("-a ", "Use phy address , used together with -d\n") BAREBOX_CMD_HELP_END /** -- 1.7.10.4 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox