From patchwork Sun Apr 12 22:03:56 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marek Vasut X-Patchwork-Id: 237698 List-Id: U-Boot discussion From: marek.vasut at gmail.com (Marek Vasut) Date: Mon, 13 Apr 2020 00:03:56 +0200 Subject: [PATCH 10/13] net: rtl8139: Factor out hardware reset In-Reply-To: <20200412220359.28224-1-marek.vasut+renesas@gmail.com> References: <20200412220359.28224-1-marek.vasut+renesas@gmail.com> Message-ID: <20200412220359.28224-10-marek.vasut+renesas@gmail.com> This hardware reset and reset-wait implementation was twice in the driver, factor it out into a separate function. This really should use wait_for_bit() eventually and return -ETIMEDOUT, but thus far, handling of any of this is missing from the driver. This must be added later. Thus far, no functional change. Signed-off-by: Marek Vasut Cc: Joe Hershberger --- drivers/net/rtl8139.c | 28 +++++++++++----------------- 1 file changed, 11 insertions(+), 17 deletions(-) diff --git a/drivers/net/rtl8139.c b/drivers/net/rtl8139.c index 6aed7bd895..68ef9eea25 100644 --- a/drivers/net/rtl8139.c +++ b/drivers/net/rtl8139.c @@ -370,16 +370,13 @@ static void rtl8139_set_rx_mode(struct eth_device *dev) outl(0xffffffff, ioaddr + RTL_REG_MAR0 + 4); } -static void rtl8139_reset(struct eth_device *dev) +static void rtl8139_hw_reset(struct eth_device *dev) { u8 reg; int i; outb(RTL_REG_CHIPCMD_CMDRESET, ioaddr + RTL_REG_CHIPCMD); - cur_rx = 0; - cur_tx = 0; - /* Give the chip 10ms to finish the reset. */ for (i = 0; i < 100; i++) { reg = inb(ioaddr + RTL_REG_CHIPCMD); @@ -388,7 +385,16 @@ static void rtl8139_reset(struct eth_device *dev) udelay(100); } +} + +static void rtl8139_reset(struct eth_device *dev) +{ + int i; + + cur_rx = 0; + cur_tx = 0; + rtl8139_hw_reset(dev); for (i = 0; i < ETH_ALEN; i++) outb(dev->enetaddr[i], ioaddr + RTL_REG_MAC0 + i); @@ -570,19 +576,7 @@ static int rtl8139_recv(struct eth_device *dev) static void rtl8139_stop(struct eth_device *dev) { - u8 reg; - int i; - ioaddr = dev->iobase; - /* reset the chip */ - outb(RTL_REG_CHIPCMD_CMDRESET, ioaddr + RTL_REG_CHIPCMD); - - /* Give the chip 10ms to finish the reset. */ - for (i = 0; i < 100; i++) { - reg = inb(ioaddr + RTL_REG_CHIPCMD); - if (!(reg & RTL_REG_CHIPCMD_CMDRESET)) - break; - udelay (100); /* wait 100us */ - } + rtl8139_hw_reset(dev); }