From: Roberto Cerati <roberto.cerati(a)bticino.it>
The device interface is 16 bits wide.
All the available packets are read from the incoming fifo.
Signed-off-by: Roberto Cerati <roberto.cerati(a)bticino.it
Signed-off-by: Raffaele Recalcati <raffaele.recalcati(a)bticino.it>
---
This driver has been adapted to u-boot starting from ks8851_mll linux driver.
The smsc911x u-boot has been used as reference.
TODO: smsc911x reads only one packet from incoming fifo, ks8851_mll reads all packets
in the incoming fifo, but it is not checked if upper driver level (net/eth.c ?) manages more than
one packet.
This driver has been tested against u-boot-2009.11-psp03.00.01.06
u-boot version present in ti-dvsdk_dm3730-evm_4_01_00_09 DVSDK.
The board name is baia and is based on dm3730 soc adapted from
evm-dm3730 Ti board.
drivers/net/Makefile | 1 +
drivers/net/ks8851_mll.c | 708 ++++++++++++++++++++++++++++++++++++++++++++++
drivers/net/ks8851_mll.h | 358 +++++++++++++++++++++++
3 files changed, 1067 insertions(+), 0 deletions(-)
create mode 100644 drivers/net/ks8851_mll.c
create mode 100644 drivers/net/ks8851_mll.h
diff --git a/drivers/net/Makefile b/drivers/net/Makefile
index fd9d0b4..ed69090 100644
--- a/drivers/net/Makefile
+++ b/drivers/net/Makefile
@@ -84,6 +84,7 @@ COBJS-$(CONFIG_TSI108_ETH) += tsi108_eth.o
COBJS-$(CONFIG_ULI526X) += uli526x.o
COBJS-$(CONFIG_VSC7385_ENET) += vsc7385.o
COBJS-$(CONFIG_XILINX_EMACLITE) += xilinx_emaclite.o
+COBJS-$(CONFIG_KS8851_MLL) += ks8851_mll.o
COBJS := $(sort $(COBJS-y))
SRCS := $(COBJS:.o=.c)
diff --git a/drivers/net/ks8851_mll.c b/drivers/net/ks8851_mll.c
new file mode 100644
index 0000000..b1560cc
--- /dev/null
+++ b/drivers/net/ks8851_mll.c
@@ -0,0 +1,708 @@
+/*
+ * Micrel KS8851_MLL 16bit Network driver
+ * Copyright (c) 2011 Roberto Cerati <roberto.cerati(a)bticino.it>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <common.h>
+#include <command.h>
+#include <malloc.h>
+#include <net.h>
+#include <miiphy.h>
+
+#include "ks8851_mll.h"
+
+#define MAX_RECV_FRAMES 32
+#define MAX_BUF_SIZE 2048
+#define TX_BUF_SIZE 2000
+#define RX_BUF_SIZE 2000
+
+#define KS_CCR 0x08
+#define CCR_EEPROM (1 << 9)
+#define CCR_SPI (1 << 8)
+#define CCR_8BIT (1 << 7)
+#define CCR_16BIT (1 << 6)
+#define CCR_32BIT (1 << 5)
+#define CCR_SHARED (1 << 4)
+#define CCR_32PIN (1 << 0)
+
+/*
+ * union ks_tx_hdr - tx header data
+ * @txb: The header as bytes
+ * @txw: The header as 16bit, little-endian words
+ *
+ * A dual representation of the tx header data to allow
+ * access to individual bytes, and to allow 16bit accesses
+ * with 16bit alignment.
+ */
+union ks_tx_hdr {
+ u8 txb[4];
+ __le16 txw[2];
+};
+
+/*
+ * struct ks_net - KS8851 driver private data
+ * @net_device : The network device we're bound to
+ * @txh : temporaly buffer to save status/length.
+ * @frame_head_info : frame header information for multi-pkt rx.
+ * @statelock : Lock on this structure for tx list.
+ * @msg_enable : The message flags controlling driver output (see ethtool).
+ * @frame_cnt : number of frames received.
+ * @bus_width : i/o bus width.
+ * @irq : irq number assigned to this device.
+ * @rc_rxqcr : Cached copy of KS_RXQCR.
+ * @rc_txcr : Cached copy of KS_TXCR.
+ * @rc_ier : Cached copy of KS_IER.
+ * @sharedbus : Multipex(addr and data bus) mode indicator.
+ * @cmd_reg_cache : command register cached.
+ * @cmd_reg_cache_int : command register cached. Used in the irq handler.
+ * @promiscuous : promiscuous mode indicator.
+ * @all_mcast : mutlicast indicator.
+ * @mcast_lst_size : size of multicast list.
+ * @mcast_lst : multicast list.
+ * @mcast_bits : multicast enabed.
+ * @mac_addr : MAC address assigned to this device.
+ * @fid : frame id.
+ * @extra_byte : number of extra byte prepended rx pkt.
+ * @enabled : indicator this device works.
+ *
+ */
+
+/* Receive multiplex framer header info */
+struct type_frame_head {
+ u16 sts; /* Frame status */
+ u16 len; /* Byte count */
+} fr_h_i[MAX_RECV_FRAMES];
+
+struct ks_net {
+ struct net_device *netdev;
+ union ks_tx_hdr txh;
+ struct type_frame_head *frame_head_info;
+ u32 msg_enable;
+ u32 frame_cnt;
+ int bus_width;
+ int irq;
+
+ u16 rc_rxqcr;
+ u16 rc_txcr;
+ u16 rc_ier;
+ u16 sharedbus;
+ u16 cmd_reg_cache;
+ u16 cmd_reg_cache_int;
+ u16 promiscuous;
+ u16 all_mcast;
+ u16 mcast_lst_size;
+ u8 mcast_lst[MAX_MCAST_LST][MAC_ADDR_LEN];
+ u8 mcast_bits[HW_MCAST_SIZE];
+ u8 mac_addr[6];
+ u8 fid;
+ u8 extra_byte;
+ u8 enabled;
+} ks_str, *ks;
+
+#define BE3 0x8000 /* Byte Enable 3 */
+#define BE2 0x4000 /* Byte Enable 2 */
+#define BE1 0x2000 /* Byte Enable 1 */
+#define BE0 0x1000 /* Byte Enable 0 */
+
+#define mdelay(n) udelay((n)*1000)
+
+static u8 ks_rdreg8(struct eth_device *dev, u16 offset)
+{
+ volatile u16 *hw_addr = (u16 *)(dev->iobase);
+ volatile u16 *hw_addr_cmd = (u16 *)(dev->iobase + 2);
+
+ u16 data;
+
+ u8 shift_bit = offset & 0x03;
+ u8 shift_data = (offset & 1) << 3;
+
+ *hw_addr_cmd = offset | (u16)(BE0 << shift_bit);
+
+ data = *hw_addr;
+ return (u8)(data >> shift_data);
+}
+
+static u16 ks_rdreg16(struct eth_device *dev, u16 offset)
+{
+ volatile u16 *hw_addr = (u16 *)(dev->iobase);
+ volatile u16 *hw_addr_cmd = (u16 *)(dev->iobase + 2);
+
+ *hw_addr_cmd = offset | ((BE1 | BE0) << (offset & 0x02));
+
+ return *hw_addr;
+}
+
+static void ks_wrreg8(struct eth_device *dev, u16 offset, u8 val)
+{
+ volatile u16 *hw_addr = (u16 *)(dev->iobase);
+ volatile u16 *hw_addr_cmd = (u16 *)(dev->iobase + 2);
+
+ u8 shift_bit = (offset & 0x03);
+ u16 value_write = (u16)(val << ((offset & 1) << 3));
+
+ *hw_addr_cmd = (u16)offset | (BE0 << shift_bit);
+ *hw_addr = value_write;
+}
+
+static void ks_wrreg16(struct eth_device *dev, u16 offset, u16 val)
+{
+ volatile u16 *hw_addr = (u16 *)(dev->iobase);
+ volatile u16 *hw_addr_cmd = (u16 *)(dev->iobase + 2);
+
+ *hw_addr_cmd = offset | ((BE1 | BE0) << (offset & 0x02));
+ *hw_addr = val;
+}
+
+/*
+ * ks_inblk - read a block of data from QMU. This is called after sudo DMA mode
+ * enabled.
+ * @ks: The chip state
+ * @wptr: buffer address to save data
+ * @len: length in byte to read
+ *
+ */
+static inline void ks_inblk(struct eth_device *dev, u16 *wptr, u32 len)
+{
+ volatile u16 *hw_addr = (u16 *)(dev->iobase);
+ u16 tmp;
+ len >>= 1;
+ while (len--)
+ *wptr++ = *hw_addr;
+}
+
+/*
+ * ks_outblk - write data to QMU. This is called after sudo DMA mode enabled.
+ * @ks: The chip information
+ * @wptr: buffer address
+ * @len: length in byte to write
+ *
+ */
+static inline void ks_outblk(struct eth_device *dev, u16 *wptr, u32 len)
+{
+ volatile u16 *hw_addr = (u16 *)(dev->iobase);
+ len >>= 1;
+ while (len--)
+ *hw_addr = *wptr++;
+}
+
+static void ks_disable_int(struct eth_device *dev)
+{
+ ks_wrreg16(dev, KS_IER, 0x0000);
+}
+
+static void ks_enable_int(struct eth_device *dev)
+{
+ ks_wrreg16(dev, KS_IER, ks->rc_ier);
+}
+
+static void ks_set_powermode(struct eth_device *dev, unsigned pwrmode)
+{
+ unsigned pmecr;
+
+ ks_rdreg16(dev, KS_GRR);
+ pmecr = ks_rdreg16(dev, KS_PMECR);
+ pmecr &= ~PMECR_PM_MASK;
+ pmecr |= pwrmode;
+
+ ks_wrreg16(dev, KS_PMECR, pmecr);
+}
+
+/*
+ * ks_read_config - read chip configuration of bus width.
+ * @ks: The chip information
+ *
+ */
+static void ks_read_config(struct eth_device *dev)
+{
+ u16 reg_data = 0;
+
+ /* Regardless of bus width, 8 bit read should always work.*/
+ reg_data = ks_rdreg8(dev, KS_CCR) & 0x00FF;
+ reg_data |= ks_rdreg8(dev, KS_CCR+1) << 8;
+
+ /* addr/data bus are multiplexed */
+ ks->sharedbus = (reg_data & CCR_SHARED) == CCR_SHARED;
+
+ /*
+ * There are garbage data when reading data from QMU,
+ * depending on bus-width.
+ */
+ if (reg_data & CCR_8BIT) {
+ ks->bus_width = ENUM_BUS_8BIT;
+ ks->extra_byte = 1;
+ } else if (reg_data & CCR_16BIT) {
+ ks->bus_width = ENUM_BUS_16BIT;
+ ks->extra_byte = 2;
+ } else {
+ ks->bus_width = ENUM_BUS_32BIT;
+ ks->extra_byte = 4;
+ }
+}
+
+/*
+ * ks_soft_reset - issue one of the soft reset to the device
+ * @ks: The device state.
+ * @op: The bit(s) to set in the GRR
+ *
+ * Issue the relevant soft-reset command to the device's GRR register
+ * specified by @op.
+ *
+ * Note, the delays are in there as a caution to ensure that the reset
+ * has time to take effect and then complete. Since the datasheet does
+ * not currently specify the exact sequence, we have chosen something
+ * that seems to work with our device.
+ */
+static void ks_soft_reset(struct eth_device *dev, unsigned op)
+{
+ /* Disable interrupt first */
+ ks_wrreg16(dev, KS_IER, 0x0000);
+ ks_wrreg16(dev, KS_GRR, op);
+ mdelay(10); /* wait a short time to effect reset */
+ ks_wrreg16(dev, KS_GRR, 0);
+ mdelay(1); /* wait for condition to clear */
+}
+
+void ks_enable_qmu(struct eth_device *dev)
+{
+ u16 w;
+
+ w = ks_rdreg16(dev, KS_TXCR);
+
+ /* Enables QMU Transmit (TXCR). */
+ ks_wrreg16(dev, KS_TXCR, w | TXCR_TXE);
+
+ /*
+ * RX Frame Count Threshold Enable and Auto-Dequeue RXQ Frame
+ * Enable
+ */
+ w = ks_rdreg16(dev, KS_RXQCR);
+ ks_wrreg16(dev, KS_RXQCR, w | RXQCR_RXFCTE);
+
+ /* Enables QMU Receive (RXCR1). */
+ w = ks_rdreg16(dev, KS_RXCR1);
+ ks_wrreg16(dev, KS_RXCR1, w | RXCR1_RXE);
+}
+
+static void ks_disable_qmu(struct eth_device *dev)
+{
+ u16 w;
+
+ w = ks_rdreg16(dev, KS_TXCR);
+
+ /* Disables QMU Transmit (TXCR). */
+ w &= ~TXCR_TXE;
+ ks_wrreg16(dev, KS_TXCR, w);
+
+ /* Disables QMU Receive (RXCR1). */
+ w = ks_rdreg16(dev, KS_RXCR1);
+ w &= ~RXCR1_RXE ;
+ ks_wrreg16(dev, KS_RXCR1, w);
+
+}
+
+static inline void ks_read_qmu(struct eth_device *dev, u16 *buf, u32 len)
+{
+ u32 r = ks->extra_byte & 0x1 ;
+ u32 w = ks->extra_byte - r;
+
+ /* 1. set sudo DMA mode */
+ ks_wrreg16(dev, KS_RXFDPR, RXFDPR_RXFPAI);
+ ks_wrreg8(dev, KS_RXQCR, (ks->rc_rxqcr | RXQCR_SDA) & 0xff);
+
+ /*
+ * 2. read prepend data
+ *
+ * read 4 + extra bytes and discard them.
+ * extra bytes for dummy, 2 for status, 2 for len
+ */
+
+ if ((r))
+ ks_rdreg8(dev, 0);
+
+ ks_inblk(dev, buf, w + 2 + 2);
+
+ /* 3. read pkt data */
+ ks_inblk(dev, buf, ALIGN(len, 4));
+
+ /* 4. reset sudo DMA Mode */
+ ks_wrreg8(dev, KS_RXQCR, ks->rc_rxqcr);
+}
+
+static void ks_rcv(struct eth_device *dev, uchar **pv_data)
+{
+ u32 i;
+ struct type_frame_head *frame_hdr = ks->frame_head_info;
+
+ ks->frame_cnt = ks_rdreg16(dev, KS_RXFCTR) >> 8;
+
+ /* read all header information */
+ for (i = 0; i < ks->frame_cnt; i++) {
+ /* Checking Received packet status */
+ frame_hdr->sts = ks_rdreg16(dev, KS_RXFHSR);
+ /* Get packet len from hardware */
+ frame_hdr->len = ks_rdreg16(dev, KS_RXFHBCR);
+ frame_hdr++;
+ }
+
+ frame_hdr = ks->frame_head_info;
+ while (ks->frame_cnt--) {
+ if ((frame_hdr->sts & RXFSHR_RXFV) &&
+ (frame_hdr->len < RX_BUF_SIZE) && frame_hdr->len) {
+
+ /* read data block including CRC 4 bytes */
+ ks_read_qmu(dev, (u16 *)(*pv_data), frame_hdr->len);
+
+ /* NetRxPackets buffer size is ok (*pv_data pointer) */
+ NetReceive(*pv_data, frame_hdr->len);
+ pv_data++;
+ } else {
+ ks_wrreg16(dev, KS_RXQCR, (ks->rc_rxqcr | RXQCR_RRXEF));
+ printf(DRIVERNAME
+ ": bad packet. \n");
+ }
+ frame_hdr++;
+ }
+}
+
+/*
+ * ks_read_selftest - read the selftest memory info.
+ * @ks: The device state
+ *
+ * Read and check the TX/RX memory selftest information.
+ */
+static int ks_read_selftest(struct eth_device *dev)
+{
+ unsigned both_done = MBIR_TXMBF | MBIR_RXMBF;
+ int ret = 0;
+ unsigned rd;
+
+ rd = ks_rdreg16(dev, KS_MBIR);
+
+ if ((rd & both_done) != both_done) {
+ printf(DRIVERNAME ": Memory selftest not finished\n");
+ return 0;
+ }
+
+ if (rd & MBIR_TXMBFA) {
+ printf(DRIVERNAME ": TX memory selftest fails\n");
+ ret |= 1;
+ }
+
+ if (rd & MBIR_RXMBFA) {
+ printf(DRIVERNAME ": RX memory selftest fails\n");
+ ret |= 2;
+ }
+
+ printf(DRIVERNAME ": the selftest passes\n");
+ return ret;
+}
+
+static void ks_setup(struct eth_device *dev)
+{
+ u16 w;
+
+ /*
+ * Configure QMU Transmit
+ */
+
+ /* Setup Transmit Frame Data Pointer Auto-Increment (TXFDPR) */
+ ks_wrreg16(dev, KS_TXFDPR, TXFDPR_TXFPAI);
+
+ /* Setup Receive Frame Data Pointer Auto-Increment */
+ ks_wrreg16(dev, KS_RXFDPR, RXFDPR_RXFPAI);
+
+ /* Setup Receive Frame Threshold - 1 frame (RXFCTFC) */
+ ks_wrreg16(dev, KS_RXFCTR, 1 & RXFCTR_THRESHOLD_MASK);
+
+ /* Setup RxQ Command Control (RXQCR) */
+ ks->rc_rxqcr = RXQCR_CMD_CNTL;
+ ks_wrreg16(dev, KS_RXQCR, ks->rc_rxqcr);
+
+ /*
+ * set the force mode to half duplex, default is full duplex
+ * because if the auto-negotiation fails, most switch uses
+ * half-duplex.
+ */
+ w = ks_rdreg16(dev, KS_P1MBCR);
+ w &= ~P1MBCR_FORCE_FDX;
+ ks_wrreg16(dev, KS_P1MBCR, w);
+
+ w = TXCR_TXFCE | TXCR_TXPE | TXCR_TXCRC | TXCR_TCGIP;
+ ks_wrreg16(dev, KS_TXCR, w);
+
+ w = RXCR1_RXFCE | RXCR1_RXBE | RXCR1_RXUE | RXCR1_RXME | RXCR1_RXIPFCC;
+
+ /* Normal mode */
+ w |= RXCR1_RXPAFMA;
+
+ ks_wrreg16(dev, KS_RXCR1, w);
+}
+
+static void ks_setup_int(struct eth_device *dev)
+{
+ ks->rc_ier = 0x00;
+
+ /* Clear the interrupts status of the hardware. */
+ ks_wrreg16(dev, KS_ISR, 0xffff);
+
+ /* Enables the interrupts of the hardware. */
+ ks->rc_ier = (IRQ_LCI | IRQ_TXI | IRQ_RXI);
+}
+
+static int ks8851_mll_detect_chip(struct eth_device *dev)
+{
+ unsigned short val, i;
+
+ ks_read_config(dev);
+
+ if (ks->bus_width == ENUM_BUS_16BIT)
+ printf(DRIVERNAME ": ENUM_BUS_16BIT\n");
+ else
+ printf(DRIVERNAME ": no 16 bit bus\n");
+
+
+ val = ks_rdreg16(dev, KS_CIDER);
+
+ if (val == 0xffff) {
+ /* Special case -- no chip present */
+ printf(DRIVERNAME ": is chip mounted ?\n");
+ return -1;
+ } else if ((val & 0xfff0) != CIDER_ID) {
+ printf(DRIVERNAME ": Invalid chip id 0x%04lx\n", val);
+ return -1;
+ }
+
+ printf("Read back KS8851 id 0x%x\n", val);
+
+ /* only one entry in the table */
+ val &= 0xfff0;
+ for (i = 0; chip_ids[i].id != 0; i++) {
+ if (chip_ids[i].id == val)
+ break;
+ }
+ if (!chip_ids[i].id) {
+ printf(DRIVERNAME ": Unknown chip ID %04x\n", val);
+ return -1;
+ }
+
+ dev->priv = (void *)&chip_ids[i];
+
+ return 0;
+}
+
+static void ks8851_mll_reset(struct eth_device *dev)
+{
+ /* wake up powermode to normal mode */
+ ks_set_powermode(dev, PMECR_PM_NORMAL);
+ mdelay(1); /* wait for normal mode to take effect */
+
+ /* Disable interrupt and reset */
+ ks_soft_reset(dev, GRR_GSR);
+
+ /* turn off the IRQs and ack any outstanding */
+ ks_wrreg16(dev, KS_IER, 0x0000);
+ ks_wrreg16(dev, KS_ISR, 0xffff);
+
+ /* shutdown RX/TX QMU */
+ ks_disable_qmu(dev);
+}
+
+static void ks8851_mll_handle_mac_address(struct eth_device *dev)
+{
+ u16 addrh, addrm, addrl;
+ uchar *m = dev->enetaddr;
+
+ addrh = m[1] | (m[0] << 8);
+ addrm = m[3] | (m[2] << 8);
+ addrl = m[5] | (m[4] << 8);
+
+ ks_wrreg16(dev, KS_MARH, addrh);
+ ks_wrreg16(dev, KS_MARM, addrm);
+ ks_wrreg16(dev, KS_MARL, addrl);
+
+ printf(DRIVERNAME ": MAC %pM\n", m);
+}
+
+static void ks8851_mll_phy_configure(struct eth_device *dev)
+{
+ ks_setup(dev);
+ ks_setup_int(dev);
+ u16 data;
+
+ /* Probing the phy */
+ data = ks_rdreg16(dev, KS_OBCR);
+ ks_wrreg16(dev, KS_OBCR, data | OBCR_ODS_16MA);
+
+ printf(DRIVERNAME ": phy initialized\n");
+}
+
+
+static void ks8851_mll_enable(struct eth_device *dev)
+{
+ ks_wrreg16(dev, KS_ISR, 0xffff);
+ ks_enable_int(dev);
+ ks_enable_qmu(dev);
+}
+
+static int ks8851_mll_init(struct eth_device *dev, bd_t * bd)
+{
+ struct chip_id *id = dev->priv;
+
+ printf(DRIVERNAME ": detected %s controller\n", id->name);
+
+ if (ks_read_selftest(dev)) {
+ printf(DRIVERNAME ": Selftest failed\n");
+ return -1;
+ }
+
+ ks8851_mll_reset(dev);
+
+ /* Configure the PHY, initialize the link state */
+ ks8851_mll_phy_configure(dev);
+
+ /* static allocation of private informations */
+ ks->frame_head_info = fr_h_i;
+
+ ks8851_mll_handle_mac_address(dev);
+
+ /* Turn on Tx + Rx */
+ ks8851_mll_enable(dev);
+
+ return 0;
+}
+
+static void ks_write_qmu(struct eth_device *dev, u8 *pdata, u16 len)
+{
+ /* start header at txb[0] to align txw entries */
+ ks->txh.txw[0] = 0;
+ ks->txh.txw[1] = cpu_to_le16(len);
+
+ /* 1. set sudo-DMA mode */
+ ks_wrreg8(dev, KS_RXQCR, (ks->rc_rxqcr | RXQCR_SDA) & 0xff);
+ /* 2. write status/lenth info */
+ ks_outblk(dev, ks->txh.txw, 4);
+ /* 3. write pkt data */
+ ks_outblk(dev, (u16 *)pdata, ALIGN(len, 4));
+ /* 4. reset sudo-DMA mode */
+ ks_wrreg8(dev, KS_RXQCR, ks->rc_rxqcr);
+ /* 5. Enqueue Tx(move the pkt from TX buffer into TXQ) */
+ ks_wrreg16(dev, KS_TXQCR, TXQCR_METFE);
+ /* 6. wait until TXQCR_METFE is auto-cleared */
+ while (ks_rdreg16(dev, KS_TXQCR) & TXQCR_METFE)
+ ;
+}
+
+static int ks8851_mll_send(struct eth_device *dev,
+ volatile void *packet, int length)
+{
+ u8 *data = (u8 *)packet;
+ u16 tmplen = (u16) length;
+ u32 status = 0;
+
+ u16 retv;
+
+ /*
+ * Extra space are required:
+ * 4 byte for alignment, 4 for status/length, 4 for CRC
+ */
+ retv = ks_rdreg16(dev, KS_TXMIR) & 0x1fff;
+ if (retv >= tmplen + 12)
+ ks_write_qmu(dev, data, tmplen);
+ else
+ status = 1;
+
+ if (!status)
+ return 0;
+
+ printf(DRIVERNAME ": failed to send packet: %s%s\n",
+ status & 1 ? "No buffer " : "",
+ status & 2 ? "Other error" : "");
+
+ return -1;
+}
+
+static void ks8851_mll_halt(struct eth_device *dev)
+{
+ ks8851_mll_reset(dev);
+}
+
+/*
+ * Maximum receive ring size; that is, the number of packets
+ * we can buffer before overflow happens. Basically, this just
+ * needs to be enough to prevent a packet being discarded while
+ * we are processing the previous one.
+ */
+static int ks8851_mll_rx(struct eth_device *dev)
+{
+ u16 status;
+
+ status = ks_rdreg16(dev, KS_ISR);
+
+ ks_wrreg16(dev, KS_ISR, status);
+
+ if ((status & IRQ_RXI))
+ ks_rcv(dev, (uchar **)NetRxPackets);
+
+ if ((status & IRQ_LDI)) {
+ u16 pmecr = ks_rdreg16(dev, KS_PMECR);
+ pmecr &= ~PMECR_WKEVT_MASK;
+ ks_wrreg16(dev, KS_PMECR, pmecr | PMECR_WKEVT_LINK);
+ }
+
+ return 0;
+}
+
+int ks8851_mll_register(u8 dev_num, int base_addr)
+{
+ unsigned short addrl, addrm, addrh;
+ struct eth_device *dev;
+
+ dev = malloc(sizeof(*dev));
+ if (!dev) {
+ free(dev);
+ return -1;
+ }
+ memset(dev, 0, sizeof(*dev));
+
+ dev->iobase = base_addr;
+
+ ks = &ks_str;
+
+ /* Try to detect chip. Will fail if not present. */
+ if (ks8851_mll_detect_chip(dev)) {
+ free(dev);
+ return 0;
+ }
+
+ addrh = ks_rdreg16(dev, KS_MARH);
+ addrm = ks_rdreg16(dev, KS_MARM);
+ addrl = ks_rdreg16(dev, KS_MARL);
+ dev->enetaddr[0] = addrh >> 8;
+ dev->enetaddr[1] = addrh;
+ dev->enetaddr[2] = addrm >> 8;
+ dev->enetaddr[3] = addrm;
+ dev->enetaddr[4] = addrl >> 8;
+ dev->enetaddr[5] = addrl;
+
+ dev->init = ks8851_mll_init;
+ dev->halt = ks8851_mll_halt;
+ dev->send = ks8851_mll_send;
+ dev->recv = ks8851_mll_rx;
+ sprintf(dev->name, "%s-%hu", DRIVERNAME, dev_num);
+
+ eth_register(dev);
+ return 1;
+}
diff --git a/drivers/net/ks8851_mll.h b/drivers/net/ks8851_mll.h
new file mode 100644
index 0000000..0a1d2d3
--- /dev/null
+++ b/drivers/net/ks8851_mll.h
@@ -0,0 +1,358 @@
+/**
+ * drivers/net/ks8851_mll.c
+ * Copyright (c) 2009 Micrel Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+/*
+ * modified by
+ * (c) 2011 Bticino s.p.a, Roberto Cerati <roberto.cerati(a)bticino.it>
+ */
+/**
+ * Supports:
+ * KS8851 16bit MLL chip from Micrel Inc.
+ */
+#ifndef _KS8851_MLL_H_
+#define _KS8851_MLL_H_
+
+#include <linux/types.h>
+
+#define DRIVERNAME "ks8851_mll"
+
+/* MAC address registers */
+#define KS_MARL 0x10
+#define KS_MARM 0x12
+#define KS_MARH 0x14
+
+#define KS_OBCR 0x20
+#define OBCR_ODS_16MA (1 << 6)
+
+#define KS_EEPCR 0x22
+#define EEPCR_EESA (1 << 4)
+#define EEPCR_EESB (1 << 3)
+#define EEPCR_EEDO (1 << 2)
+#define EEPCR_EESCK (1 << 1)
+#define EEPCR_EECS (1 << 0)
+
+#define KS_MBIR 0x24
+#define MBIR_TXMBF (1 << 12)
+#define MBIR_TXMBFA (1 << 11)
+#define MBIR_RXMBF (1 << 4)
+#define MBIR_RXMBFA (1 << 3)
+
+#define KS_GRR 0x26
+#define GRR_QMU (1 << 1)
+#define GRR_GSR (1 << 0)
+
+#define KS_WFCR 0x2A
+#define WFCR_MPRXE (1 << 7)
+#define WFCR_WF3E (1 << 3)
+#define WFCR_WF2E (1 << 2)
+#define WFCR_WF1E (1 << 1)
+#define WFCR_WF0E (1 << 0)
+
+#define KS_WF0CRC0 0x30
+#define KS_WF0CRC1 0x32
+#define KS_WF0BM0 0x34
+#define KS_WF0BM1 0x36
+#define KS_WF0BM2 0x38
+#define KS_WF0BM3 0x3A
+
+#define KS_WF1CRC0 0x40
+#define KS_WF1CRC1 0x42
+#define KS_WF1BM0 0x44
+#define KS_WF1BM1 0x46
+#define KS_WF1BM2 0x48
+#define KS_WF1BM3 0x4A
+
+#define KS_WF2CRC0 0x50
+#define KS_WF2CRC1 0x52
+#define KS_WF2BM0 0x54
+#define KS_WF2BM1 0x56
+#define KS_WF2BM2 0x58
+#define KS_WF2BM3 0x5A
+
+#define KS_WF3CRC0 0x60
+#define KS_WF3CRC1 0x62
+#define KS_WF3BM0 0x64
+#define KS_WF3BM1 0x66
+#define KS_WF3BM2 0x68
+#define KS_WF3BM3 0x6A
+
+#define KS_TXCR 0x70
+#define TXCR_TCGICMP (1 << 8)
+#define TXCR_TCGUDP (1 << 7)
+#define TXCR_TCGTCP (1 << 6)
+#define TXCR_TCGIP (1 << 5)
+#define TXCR_FTXQ (1 << 4)
+#define TXCR_TXFCE (1 << 3)
+#define TXCR_TXPE (1 << 2)
+#define TXCR_TXCRC (1 << 1)
+#define TXCR_TXE (1 << 0)
+
+#define KS_TXSR 0x72
+#define TXSR_TXLC (1 << 13)
+#define TXSR_TXMC (1 << 12)
+#define TXSR_TXFID_MASK (0x3f << 0)
+#define TXSR_TXFID_SHIFT (0)
+#define TXSR_TXFID_GET(_v) (((_v) >> 0) & 0x3f)
+
+
+#define KS_RXCR1 0x74
+#define RXCR1_FRXQ (1 << 15)
+#define RXCR1_RXUDPFCC (1 << 14)
+#define RXCR1_RXTCPFCC (1 << 13)
+#define RXCR1_RXIPFCC (1 << 12)
+#define RXCR1_RXPAFMA (1 << 11)
+#define RXCR1_RXFCE (1 << 10)
+#define RXCR1_RXEFE (1 << 9)
+#define RXCR1_RXMAFMA (1 << 8)
+#define RXCR1_RXBE (1 << 7)
+#define RXCR1_RXME (1 << 6)
+#define RXCR1_RXUE (1 << 5)
+#define RXCR1_RXAE (1 << 4)
+#define RXCR1_RXINVF (1 << 1)
+#define RXCR1_RXE (1 << 0)
+#define RXCR1_FILTER_MASK (RXCR1_RXINVF | RXCR1_RXAE | \
+ RXCR1_RXMAFMA | RXCR1_RXPAFMA)
+
+#define KS_RXCR2 0x76
+#define RXCR2_SRDBL_MASK (0x7 << 5)
+#define RXCR2_SRDBL_SHIFT (5)
+#define RXCR2_SRDBL_4B (0x0 << 5)
+#define RXCR2_SRDBL_8B (0x1 << 5)
+#define RXCR2_SRDBL_16B (0x2 << 5)
+#define RXCR2_SRDBL_32B (0x3 << 5)
+/* #define RXCR2_SRDBL_FRAME (0x4 << 5) */
+#define RXCR2_IUFFP (1 << 4)
+#define RXCR2_RXIUFCEZ (1 << 3)
+#define RXCR2_UDPLFE (1 << 2)
+#define RXCR2_RXICMPFCC (1 << 1)
+#define RXCR2_RXSAF (1 << 0)
+
+#define KS_TXMIR 0x78
+
+#define KS_RXFHSR 0x7C
+#define RXFSHR_RXFV (1 << 15)
+#define RXFSHR_RXICMPFCS (1 << 13)
+#define RXFSHR_RXIPFCS (1 << 12)
+#define RXFSHR_RXTCPFCS (1 << 11)
+#define RXFSHR_RXUDPFCS (1 << 10)
+#define RXFSHR_RXBF (1 << 7)
+#define RXFSHR_RXMF (1 << 6)
+#define RXFSHR_RXUF (1 << 5)
+#define RXFSHR_RXMR (1 << 4)
+#define RXFSHR_RXFT (1 << 3)
+#define RXFSHR_RXFTL (1 << 2)
+#define RXFSHR_RXRF (1 << 1)
+#define RXFSHR_RXCE (1 << 0)
+#define RXFSHR_ERR (RXFSHR_RXCE | RXFSHR_RXRF |\
+ RXFSHR_RXFTL | RXFSHR_RXMR |\
+ RXFSHR_RXICMPFCS | RXFSHR_RXIPFCS |\
+ RXFSHR_RXTCPFCS)
+#define KS_RXFHBCR 0x7E
+#define RXFHBCR_CNT_MASK 0x0FFF
+
+#define KS_TXQCR 0x80
+#define TXQCR_AETFE (1 << 2)
+#define TXQCR_TXQMAM (1 << 1)
+#define TXQCR_METFE (1 << 0)
+
+#define KS_RXQCR 0x82
+#define RXQCR_RXDTTS (1 << 12)
+#define RXQCR_RXDBCTS (1 << 11)
+#define RXQCR_RXFCTS (1 << 10)
+#define RXQCR_RXIPHTOE (1 << 9)
+#define RXQCR_RXDTTE (1 << 7)
+#define RXQCR_RXDBCTE (1 << 6)
+#define RXQCR_RXFCTE (1 << 5)
+#define RXQCR_ADRFE (1 << 4)
+#define RXQCR_SDA (1 << 3)
+#define RXQCR_RRXEF (1 << 0)
+#define RXQCR_CMD_CNTL (RXQCR_RXFCTE|RXQCR_ADRFE)
+
+#define KS_TXFDPR 0x84
+#define TXFDPR_TXFPAI (1 << 14)
+#define TXFDPR_TXFP_MASK (0x7ff << 0)
+#define TXFDPR_TXFP_SHIFT (0)
+
+#define KS_RXFDPR 0x86
+#define RXFDPR_RXFPAI (1 << 14)
+
+#define KS_RXDTTR 0x8C
+#define KS_RXDBCTR 0x8E
+
+#define KS_IER 0x90
+#define KS_ISR 0x92
+#define IRQ_LCI (1 << 15)
+#define IRQ_TXI (1 << 14)
+#define IRQ_RXI (1 << 13)
+#define IRQ_RXOI (1 << 11)
+#define IRQ_TXPSI (1 << 9)
+#define IRQ_RXPSI (1 << 8)
+#define IRQ_TXSAI (1 << 6)
+#define IRQ_RXWFDI (1 << 5)
+#define IRQ_RXMPDI (1 << 4)
+#define IRQ_LDI (1 << 3)
+#define IRQ_EDI (1 << 2)
+#define IRQ_SPIBEI (1 << 1)
+#define IRQ_DEDI (1 << 0)
+
+#define KS_RXFCTR 0x9C
+#define RXFCTR_THRESHOLD_MASK 0x00FF
+
+#define KS_RXFC 0x9D
+#define RXFCTR_RXFC_MASK (0xff << 8)
+#define RXFCTR_RXFC_SHIFT (8)
+#define RXFCTR_RXFC_GET(_v) (((_v) >> 8) & 0xff)
+#define RXFCTR_RXFCT_MASK (0xff << 0)
+#define RXFCTR_RXFCT_SHIFT (0)
+
+#define KS_TXNTFSR 0x9E
+
+#define KS_MAHTR0 0xA0
+#define KS_MAHTR1 0xA2
+#define KS_MAHTR2 0xA4
+#define KS_MAHTR3 0xA6
+
+#define KS_FCLWR 0xB0
+#define KS_FCHWR 0xB2
+#define KS_FCOWR 0xB4
+
+#define KS_CIDER 0xC0
+#define CIDER_ID 0x8870
+#define CIDER_REV_MASK (0x7 << 1)
+#define CIDER_REV_SHIFT (1)
+#define CIDER_REV_GET(_v) (((_v) >> 1) & 0x7)
+
+#define KS_CGCR 0xC6
+#define KS_IACR 0xC8
+#define IACR_RDEN (1 << 12)
+#define IACR_TSEL_MASK (0x3 << 10)
+#define IACR_TSEL_SHIFT (10)
+#define IACR_TSEL_MIB (0x3 << 10)
+#define IACR_ADDR_MASK (0x1f << 0)
+#define IACR_ADDR_SHIFT (0)
+
+#define KS_IADLR 0xD0
+#define KS_IAHDR 0xD2
+
+#define KS_PMECR 0xD4
+#define PMECR_PME_DELAY (1 << 14)
+#define PMECR_PME_POL (1 << 12)
+#define PMECR_WOL_WAKEUP (1 << 11)
+#define PMECR_WOL_MAGICPKT (1 << 10)
+#define PMECR_WOL_LINKUP (1 << 9)
+#define PMECR_WOL_ENERGY (1 << 8)
+#define PMECR_AUTO_WAKE_EN (1 << 7)
+#define PMECR_WAKEUP_NORMAL (1 << 6)
+#define PMECR_WKEVT_MASK (0xf << 2)
+#define PMECR_WKEVT_SHIFT (2)
+#define PMECR_WKEVT_GET(_v) (((_v) >> 2) & 0xf)
+#define PMECR_WKEVT_ENERGY (0x1 << 2)
+#define PMECR_WKEVT_LINK (0x2 << 2)
+#define PMECR_WKEVT_MAGICPKT (0x4 << 2)
+#define PMECR_WKEVT_FRAME (0x8 << 2)
+#define PMECR_PM_MASK (0x3 << 0)
+#define PMECR_PM_SHIFT (0)
+#define PMECR_PM_NORMAL (0x0 << 0)
+#define PMECR_PM_ENERGY (0x1 << 0)
+#define PMECR_PM_SOFTDOWN (0x2 << 0)
+#define PMECR_PM_POWERSAVE (0x3 << 0)
+
+/* Standard MII PHY data */
+#define KS_P1MBCR 0xE4
+#define P1MBCR_FORCE_FDX (1 << 8)
+
+#define KS_P1MBSR 0xE6
+#define P1MBSR_AN_COMPLETE (1 << 5)
+#define P1MBSR_AN_CAPABLE (1 << 3)
+#define P1MBSR_LINK_UP (1 << 2)
+
+#define KS_PHY1ILR 0xE8
+#define KS_PHY1IHR 0xEA
+#define KS_P1ANAR 0xEC
+#define KS_P1ANLPR 0xEE
+
+#define KS_P1SCLMD 0xF4
+#define P1SCLMD_LEDOFF (1 << 15)
+#define P1SCLMD_TXIDS (1 << 14)
+#define P1SCLMD_RESTARTAN (1 << 13)
+#define P1SCLMD_DISAUTOMDIX (1 << 10)
+#define P1SCLMD_FORCEMDIX (1 << 9)
+#define P1SCLMD_AUTONEGEN (1 << 7)
+#define P1SCLMD_FORCE100 (1 << 6)
+#define P1SCLMD_FORCEFDX (1 << 5)
+#define P1SCLMD_ADV_FLOW (1 << 4)
+#define P1SCLMD_ADV_100BT_FDX (1 << 3)
+#define P1SCLMD_ADV_100BT_HDX (1 << 2)
+#define P1SCLMD_ADV_10BT_FDX (1 << 1)
+#define P1SCLMD_ADV_10BT_HDX (1 << 0)
+
+#define KS_P1CR 0xF6
+#define P1CR_HP_MDIX (1 << 15)
+#define P1CR_REV_POL (1 << 13)
+#define P1CR_OP_100M (1 << 10)
+#define P1CR_OP_FDX (1 << 9)
+#define P1CR_OP_MDI (1 << 7)
+#define P1CR_AN_DONE (1 << 6)
+#define P1CR_LINK_GOOD (1 << 5)
+#define P1CR_PNTR_FLOW (1 << 4)
+#define P1CR_PNTR_100BT_FDX (1 << 3)
+#define P1CR_PNTR_100BT_HDX (1 << 2)
+#define P1CR_PNTR_10BT_FDX (1 << 1)
+#define P1CR_PNTR_10BT_HDX (1 << 0)
+
+/* TX Frame control */
+
+#define TXFR_TXIC (1 << 15)
+#define TXFR_TXFID_MASK (0x3f << 0)
+#define TXFR_TXFID_SHIFT (0)
+
+#define KS_P1SR 0xF8
+#define P1SR_HP_MDIX (1 << 15)
+#define P1SR_REV_POL (1 << 13)
+#define P1SR_OP_100M (1 << 10)
+#define P1SR_OP_FDX (1 << 9)
+#define P1SR_OP_MDI (1 << 7)
+#define P1SR_AN_DONE (1 << 6)
+#define P1SR_LINK_GOOD (1 << 5)
+#define P1SR_PNTR_FLOW (1 << 4)
+#define P1SR_PNTR_100BT_FDX (1 << 3)
+#define P1SR_PNTR_100BT_HDX (1 << 2)
+#define P1SR_PNTR_10BT_FDX (1 << 1)
+#define P1SR_PNTR_10BT_HDX (1 << 0)
+
+#define ENUM_BUS_NONE 0
+#define ENUM_BUS_8BIT 1
+#define ENUM_BUS_16BIT 2
+#define ENUM_BUS_32BIT 3
+
+#define MAX_MCAST_LST 32
+#define HW_MCAST_SIZE 8
+#define MAC_ADDR_LEN 6
+
+/* Chip ID values */
+
+struct chip_id {
+ u16 id;
+ char *name;
+};
+
+static const struct chip_id chip_ids[] = {
+ { CIDER_ID, "KSZ8851" },
+ { 0, NULL },
+};
+
+#endif
--
1.7.0.4
