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Message-ID: <6b4837b970d7709bc2e11d89a7e21e5f10584e30.1538734658.git.igor.russkikh@aquantia.com>
Date: Fri, 5 Oct 2018 10:24:53 +0000
From: Igor Russkikh <Igor.Russkikh@...antia.com>
To: "David S . Miller" <davem@...emloft.net>
CC: "linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>,
"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
Igor Russkikh <Igor.Russkikh@...antia.com>,
Dmitry Bezrukov <Dmitry.Bezrukov@...antia.com>
Subject: [PATCH net-next 05/19] net: usb: aqc111: Introduce PHY access
From: Dmitry Bezrukov <dmitry.bezrukov@...antia.com>
Implement PHY power up/down sequences.
AQC111, depending on FW used, may has PHY being controlled either
directly (dpa = 1) or via vendor command interface (dpa = 0).
Drivers supports both themes.
We determine this from firmware versioning agreement.
Signed-off-by: Dmitry Bezrukov <dmitry.bezrukov@...antia.com>
Signed-off-by: Igor Russkikh <igor.russkikh@...antia.com>
---
drivers/net/usb/aqc111.c | 93 ++++++++++++++++++++++++++++++++++++++++++++++++
drivers/net/usb/aqc111.h | 70 ++++++++++++++++++++++++++++++++++++
2 files changed, 163 insertions(+)
diff --git a/drivers/net/usb/aqc111.c b/drivers/net/usb/aqc111.c
index 22bb259d71fb..30219bb6ddfd 100644
--- a/drivers/net/usb/aqc111.c
+++ b/drivers/net/usb/aqc111.c
@@ -138,15 +138,44 @@ static int aqc111_write_cmd(struct usbnet *dev, u8 cmd, u16 value,
return __aqc111_write_cmd(dev, cmd, value, index, size, data, 0);
}
+static int aq_mdio_read_cmd(struct usbnet *dev, u16 value, u16 index,
+ u16 size, void *data)
+{
+ return aqc111_read_cmd(dev, AQ_PHY_CMD, value, index, size, data);
+}
+
+static int aq_mdio_write_cmd(struct usbnet *dev, u16 value, u16 index,
+ u16 size, void *data)
+{
+ return aqc111_write_cmd(dev, AQ_PHY_CMD, value, index, size, data);
+}
+
static const struct net_device_ops aqc111_netdev_ops = {
.ndo_open = usbnet_open,
.ndo_stop = usbnet_stop,
};
+static void aqc111_read_fw_version(struct usbnet *dev,
+ struct aqc111_data *aqc111_data)
+{
+ aqc111_read_cmd(dev, AQ_ACCESS_MAC, AQ_FW_VER_MAJOR,
+ 1, 1, &aqc111_data->fw_ver.major);
+ aqc111_read_cmd(dev, AQ_ACCESS_MAC, AQ_FW_VER_MINOR,
+ 1, 1, &aqc111_data->fw_ver.minor);
+ aqc111_read_cmd(dev, AQ_ACCESS_MAC, AQ_FW_VER_REV,
+ 1, 1, &aqc111_data->fw_ver.rev);
+
+ if (aqc111_data->fw_ver.major & 0x80)
+ aqc111_data->fw_ver.major &= ~0x80;
+ else
+ aqc111_data->dpa = 1;
+}
+
static int aqc111_bind(struct usbnet *dev, struct usb_interface *intf)
{
int ret;
struct usb_device *udev = interface_to_usbdev(intf);
+ struct aqc111_data *aqc111_data;
/* Check if vendor configuration */
if (udev->actconfig->desc.bConfigurationValue != 1) {
@@ -162,8 +191,18 @@ static int aqc111_bind(struct usbnet *dev, struct usb_interface *intf)
return ret;
}
+ aqc111_data = kzalloc(sizeof(*aqc111_data), GFP_KERNEL);
+ if (!aqc111_data)
+ return -ENOMEM;
+
+ /* store aqc111_data pointer in device data field */
+ dev->data[0] = (unsigned long)aqc111_data;
+ memset(aqc111_data, 0, sizeof(*aqc111_data));
+
dev->net->netdev_ops = &aqc111_netdev_ops;
+ aqc111_read_fw_version(dev, aqc111_data);
+
return 0;
}
@@ -172,6 +211,8 @@ static void aqc111_unbind(struct usbnet *dev, struct usb_interface *intf)
u8 reg8;
u16 reg16;
+ struct aqc111_data *aqc111_data = (struct aqc111_data *)dev->data[0];
+
/* Force bz */
reg16 = SFR_PHYPWR_RSTCTL_BZ;
aqc111_write_cmd_nopm(dev, AQ_ACCESS_MAC, SFR_PHYPWR_RSTCTL,
@@ -179,12 +220,52 @@ static void aqc111_unbind(struct usbnet *dev, struct usb_interface *intf)
reg16 = 0;
aqc111_write_cmd_nopm(dev, AQ_ACCESS_MAC, SFR_PHYPWR_RSTCTL,
2, 2, ®16);
+
+ /* Power down ethernet PHY */
+ if (aqc111_data->dpa) {
+ reg8 = 0x00;
+ aqc111_write_cmd_nopm(dev, AQ_PHY_POWER, 0,
+ 0, 1, ®8);
+ } else {
+ aqc111_data->phy_ops.low_power = 1;
+ aqc111_data->phy_ops.phy_power = 0;
+ aqc111_write_cmd_nopm(dev, AQ_PHY_OPS, 0, 0,
+ 4, &aqc111_data->phy_ops);
+ }
+
+ kfree(aqc111_data);
}
static int aqc111_reset(struct usbnet *dev)
{
u8 reg8 = 0;
u16 reg16 = 0;
+ struct aqc111_data *aqc111_data = (struct aqc111_data *)dev->data[0];
+
+ /* Power up ethernet PHY */
+ aqc111_data->phy_ops.phy_ctrl1 = 0;
+ aqc111_data->phy_ops.phy_ctrl2 = 0;
+
+ aqc111_data->phy_ops.phy_power = 1;
+ if (aqc111_data->dpa) {
+ aqc111_read_cmd(dev, AQ_PHY_POWER, 0, 0, 1, ®8);
+ if (reg8 == 0x00) {
+ reg8 = 0x02;
+ aqc111_write_cmd(dev, AQ_PHY_POWER, 0, 0, 1, ®8);
+ msleep(200);
+ }
+
+ aq_mdio_read_cmd(dev, AQ_GLB_STD_CTRL_REG, AQ_PHY_GLOBAL_ADDR,
+ 2, ®16);
+ if (reg16 & AQ_PHY_LOW_POWER_MODE) {
+ reg16 &= ~AQ_PHY_LOW_POWER_MODE;
+ aq_mdio_write_cmd(dev, AQ_GLB_STD_CTRL_REG,
+ AQ_PHY_GLOBAL_ADDR, 2, ®16);
+ }
+ } else {
+ aqc111_write_cmd(dev, AQ_PHY_OPS, 0, 0,
+ 4, &aqc111_data->phy_ops);
+ }
reg8 = 0xFF;
aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_BM_INT_MASK, 1, 1, ®8);
@@ -204,6 +285,7 @@ static int aqc111_reset(struct usbnet *dev)
static int aqc111_stop(struct usbnet *dev)
{
u16 reg16 = 0;
+ struct aqc111_data *aqc111_data = (struct aqc111_data *)dev->data[0];
aqc111_read_cmd(dev, AQ_ACCESS_MAC, SFR_MEDIUM_STATUS_MODE,
2, 2, ®16);
@@ -214,6 +296,17 @@ static int aqc111_stop(struct usbnet *dev)
aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_RX_CTL,
2, 2, ®16);
+ /* Put PHY to low power*/
+ if (aqc111_data->dpa) {
+ reg16 = AQ_PHY_LOW_POWER_MODE;
+ aq_mdio_write_cmd(dev, AQ_GLB_STD_CTRL_REG, AQ_PHY_GLOBAL_ADDR,
+ 2, ®16);
+ } else {
+ aqc111_data->phy_ops.low_power = 1;
+ aqc111_write_cmd(dev, AQ_PHY_OPS, 0, 0,
+ 4, &aqc111_data->phy_ops);
+ }
+
return 0;
}
diff --git a/drivers/net/usb/aqc111.h b/drivers/net/usb/aqc111.h
index 6b34202fa22b..8738d2c4ae90 100644
--- a/drivers/net/usb/aqc111.h
+++ b/drivers/net/usb/aqc111.h
@@ -12,6 +12,17 @@
#define AQ_ACCESS_MAC 0x01
#define AQ_PHY_POWER 0x31
+#define AQ_PHY_CMD 0x32
+#define AQ_PHY_OPS 0x61
+
+#define AQC111_PHY_ID 0x00
+#define AQ_PHY_ADDR(mmd) ((AQC111_PHY_ID << 8) | mmd)
+
+#define AQ_PHY_GLOBAL_MMD 0x1E
+#define AQ_PHY_GLOBAL_ADDR AQ_PHY_ADDR(AQ_PHY_GLOBAL_MMD)
+
+#define AQ_GLB_STD_CTRL_REG 0x0000
+ #define AQ_PHY_LOW_POWER_MODE 0x0800
#define AQ_USB_PHY_SET_TIMEOUT 10000
#define AQ_USB_SET_TIMEOUT 4000
@@ -102,6 +113,65 @@
#define SFR_BULK_OUT_FLUSH_EN 0x01
#define SFR_BULK_OUT_EFF_EN 0x02
+#define AQ_FW_VER_MAJOR 0xDA
+#define AQ_FW_VER_MINOR 0xDB
+#define AQ_FW_VER_REV 0xDC
+
+/******************************************************************************/
+
+struct aqc111_phy_options {
+ union {
+ struct {
+ u8 adv_100M: 1;
+ u8 adv_1G: 1;
+ u8 adv_2G5: 1;
+ u8 adv_5G: 1;
+ u8 rsvd1: 4;
+ };
+ u8 advertising;
+ };
+ union {
+ struct {
+ u8 eee_100M: 1;
+ u8 eee_1G: 1;
+ u8 eee_2G5: 1;
+ u8 eee_5G: 1;
+ u8 rsvd2: 4;
+ };
+ u8 eee;
+ };
+ union {
+ struct {
+ u8 pause: 1;
+ u8 asym_pause: 1;
+ u8 low_power: 1;
+ u8 phy_power: 1;
+ u8 wol: 1;
+ u8 downshift: 1;
+ u8 rsvd4: 2;
+ };
+ u8 phy_ctrl1;
+ };
+ union {
+ struct {
+ u8 dsh_ret_cnt: 4;
+ u8 magic_packet:1;
+ u8 rsvd5: 3;
+ };
+ u8 phy_ctrl2;
+ };
+};
+
+struct aqc111_data {
+ struct {
+ u8 major;
+ u8 minor;
+ u8 rev;
+ } fw_ver;
+ u8 dpa; /*direct PHY access*/
+ struct aqc111_phy_options phy_ops;
+} __packed;
+
static struct {
unsigned char ctrl;
unsigned char timer_l;
--
2.7.4
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