mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-01 17:10:11 +00:00
d55a003904
As DM_ETH is required for all network drivers, it's now safe to remove the non-DM_ETH support code. Signed-off-by: Tom Rini <trini@konsulko.com>
603 lines
15 KiB
C
603 lines
15 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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#include <common.h>
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#include <asm/io.h>
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#include <dm.h>
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#include <malloc.h>
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#include <net.h>
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#include <netdev.h>
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#include <pci.h>
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#include <linux/bitops.h>
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#include <linux/delay.h>
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#define SROM_DLEVEL 0
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/* PCI Registers. */
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#define PCI_CFDA_PSM 0x43
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#define CFRV_RN 0x000000f0 /* Revision Number */
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#define WAKEUP 0x00 /* Power Saving Wakeup */
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#define SLEEP 0x80 /* Power Saving Sleep Mode */
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#define DC2114x_BRK 0x0020 /* CFRV break between DC21142 & DC21143 */
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/* Ethernet chip registers. */
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#define DE4X5_BMR 0x000 /* Bus Mode Register */
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#define DE4X5_TPD 0x008 /* Transmit Poll Demand Reg */
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#define DE4X5_RRBA 0x018 /* RX Ring Base Address Reg */
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#define DE4X5_TRBA 0x020 /* TX Ring Base Address Reg */
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#define DE4X5_STS 0x028 /* Status Register */
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#define DE4X5_OMR 0x030 /* Operation Mode Register */
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#define DE4X5_SICR 0x068 /* SIA Connectivity Register */
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#define DE4X5_APROM 0x048 /* Ethernet Address PROM */
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/* Register bits. */
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#define BMR_SWR 0x00000001 /* Software Reset */
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#define STS_TS 0x00700000 /* Transmit Process State */
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#define STS_RS 0x000e0000 /* Receive Process State */
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#define OMR_ST 0x00002000 /* Start/Stop Transmission Command */
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#define OMR_SR 0x00000002 /* Start/Stop Receive */
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#define OMR_PS 0x00040000 /* Port Select */
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#define OMR_SDP 0x02000000 /* SD Polarity - MUST BE ASSERTED */
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#define OMR_PM 0x00000080 /* Pass All Multicast */
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/* Descriptor bits. */
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#define R_OWN 0x80000000 /* Own Bit */
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#define RD_RER 0x02000000 /* Receive End Of Ring */
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#define RD_LS 0x00000100 /* Last Descriptor */
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#define RD_ES 0x00008000 /* Error Summary */
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#define TD_TER 0x02000000 /* Transmit End Of Ring */
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#define T_OWN 0x80000000 /* Own Bit */
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#define TD_LS 0x40000000 /* Last Segment */
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#define TD_FS 0x20000000 /* First Segment */
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#define TD_ES 0x00008000 /* Error Summary */
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#define TD_SET 0x08000000 /* Setup Packet */
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/* The EEPROM commands include the alway-set leading bit. */
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#define SROM_WRITE_CMD 5
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#define SROM_READ_CMD 6
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#define SROM_ERASE_CMD 7
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#define SROM_HWADD 0x0014 /* Hardware Address offset in SROM */
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#define SROM_RD 0x00004000 /* Read from Boot ROM */
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#define EE_DATA_WRITE 0x04 /* EEPROM chip data in. */
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#define EE_WRITE_0 0x4801
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#define EE_WRITE_1 0x4805
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#define EE_DATA_READ 0x08 /* EEPROM chip data out. */
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#define SROM_SR 0x00000800 /* Select Serial ROM when set */
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#define DT_IN 0x00000004 /* Serial Data In */
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#define DT_CLK 0x00000002 /* Serial ROM Clock */
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#define DT_CS 0x00000001 /* Serial ROM Chip Select */
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#define POLL_DEMAND 1
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#define phys_to_bus(dev, a) dm_pci_phys_to_mem((dev), (a))
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#define NUM_RX_DESC PKTBUFSRX
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#define NUM_TX_DESC 1 /* Number of TX descriptors */
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#define RX_BUFF_SZ PKTSIZE_ALIGN
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#define TOUT_LOOP 1000000
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#define SETUP_FRAME_LEN 192
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struct de4x5_desc {
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volatile s32 status;
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u32 des1;
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u32 buf;
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u32 next;
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};
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struct dc2114x_priv {
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struct de4x5_desc rx_ring[NUM_RX_DESC] __aligned(32);
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struct de4x5_desc tx_ring[NUM_TX_DESC] __aligned(32);
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int rx_new; /* RX descriptor ring pointer */
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int tx_new; /* TX descriptor ring pointer */
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char rx_ring_size;
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char tx_ring_size;
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struct udevice *devno;
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char *name;
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void __iomem *iobase;
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u8 *enetaddr;
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};
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/* RX and TX descriptor ring */
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static u32 dc2114x_inl(struct dc2114x_priv *priv, u32 addr)
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{
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return le32_to_cpu(readl(priv->iobase + addr));
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}
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static void dc2114x_outl(struct dc2114x_priv *priv, u32 command, u32 addr)
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{
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writel(cpu_to_le32(command), priv->iobase + addr);
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}
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static void reset_de4x5(struct dc2114x_priv *priv)
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{
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u32 i;
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i = dc2114x_inl(priv, DE4X5_BMR);
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mdelay(1);
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dc2114x_outl(priv, i | BMR_SWR, DE4X5_BMR);
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mdelay(1);
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dc2114x_outl(priv, i, DE4X5_BMR);
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mdelay(1);
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for (i = 0; i < 5; i++) {
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dc2114x_inl(priv, DE4X5_BMR);
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mdelay(10);
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}
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mdelay(1);
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}
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static void start_de4x5(struct dc2114x_priv *priv)
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{
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u32 omr;
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omr = dc2114x_inl(priv, DE4X5_OMR);
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omr |= OMR_ST | OMR_SR;
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dc2114x_outl(priv, omr, DE4X5_OMR); /* Enable the TX and/or RX */
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}
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static void stop_de4x5(struct dc2114x_priv *priv)
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{
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u32 omr;
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omr = dc2114x_inl(priv, DE4X5_OMR);
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omr &= ~(OMR_ST | OMR_SR);
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dc2114x_outl(priv, omr, DE4X5_OMR); /* Disable the TX and/or RX */
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}
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/* SROM Read and write routines. */
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static void sendto_srom(struct dc2114x_priv *priv, u_int command, u_long addr)
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{
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dc2114x_outl(priv, command, addr);
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udelay(1);
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}
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static int getfrom_srom(struct dc2114x_priv *priv, u_long addr)
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{
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u32 tmp = dc2114x_inl(priv, addr);
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udelay(1);
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return tmp;
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}
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/* Note: this routine returns extra data bits for size detection. */
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static int do_read_eeprom(struct dc2114x_priv *priv, u_long ioaddr, int location,
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int addr_len)
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{
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int read_cmd = location | (SROM_READ_CMD << addr_len);
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unsigned int retval = 0;
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int i;
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sendto_srom(priv, SROM_RD | SROM_SR, ioaddr);
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sendto_srom(priv, SROM_RD | SROM_SR | DT_CS, ioaddr);
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debug_cond(SROM_DLEVEL >= 1, " EEPROM read at %d ", location);
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/* Shift the read command bits out. */
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for (i = 4 + addr_len; i >= 0; i--) {
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short dataval = (read_cmd & (1 << i)) ? EE_DATA_WRITE : 0;
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sendto_srom(priv, SROM_RD | SROM_SR | DT_CS | dataval,
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ioaddr);
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udelay(10);
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sendto_srom(priv, SROM_RD | SROM_SR | DT_CS | dataval | DT_CLK,
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ioaddr);
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udelay(10);
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debug_cond(SROM_DLEVEL >= 2, "%X",
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getfrom_srom(priv, ioaddr) & 15);
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retval = (retval << 1) |
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!!(getfrom_srom(priv, ioaddr) & EE_DATA_READ);
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}
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sendto_srom(priv, SROM_RD | SROM_SR | DT_CS, ioaddr);
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debug_cond(SROM_DLEVEL >= 2, " :%X:", getfrom_srom(priv, ioaddr) & 15);
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for (i = 16; i > 0; i--) {
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sendto_srom(priv, SROM_RD | SROM_SR | DT_CS | DT_CLK, ioaddr);
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udelay(10);
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debug_cond(SROM_DLEVEL >= 2, "%X",
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getfrom_srom(priv, ioaddr) & 15);
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retval = (retval << 1) |
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!!(getfrom_srom(priv, ioaddr) & EE_DATA_READ);
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sendto_srom(priv, SROM_RD | SROM_SR | DT_CS, ioaddr);
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udelay(10);
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}
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/* Terminate the EEPROM access. */
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sendto_srom(priv, SROM_RD | SROM_SR, ioaddr);
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debug_cond(SROM_DLEVEL >= 2, " EEPROM value at %d is %5.5x.\n",
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location, retval);
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return retval;
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}
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/*
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* This executes a generic EEPROM command, typically a write or write
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* enable. It returns the data output from the EEPROM, and thus may
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* also be used for reads.
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*/
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static int do_eeprom_cmd(struct dc2114x_priv *priv, u_long ioaddr, int cmd,
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int cmd_len)
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{
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unsigned int retval = 0;
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debug_cond(SROM_DLEVEL >= 1, " EEPROM op 0x%x: ", cmd);
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sendto_srom(priv, SROM_RD | SROM_SR | DT_CS | DT_CLK, ioaddr);
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/* Shift the command bits out. */
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do {
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short dataval = (cmd & BIT(cmd_len)) ? EE_WRITE_1 : EE_WRITE_0;
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sendto_srom(priv, dataval, ioaddr);
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udelay(10);
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debug_cond(SROM_DLEVEL >= 2, "%X",
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getfrom_srom(priv, ioaddr) & 15);
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sendto_srom(priv, dataval | DT_CLK, ioaddr);
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udelay(10);
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retval = (retval << 1) |
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!!(getfrom_srom(priv, ioaddr) & EE_DATA_READ);
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} while (--cmd_len >= 0);
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sendto_srom(priv, SROM_RD | SROM_SR | DT_CS, ioaddr);
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/* Terminate the EEPROM access. */
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sendto_srom(priv, SROM_RD | SROM_SR, ioaddr);
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debug_cond(SROM_DLEVEL >= 1, " EEPROM result is 0x%5.5x.\n", retval);
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return retval;
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}
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static int read_srom(struct dc2114x_priv *priv, u_long ioaddr, int index)
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{
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int ee_addr_size;
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ee_addr_size = (do_read_eeprom(priv, ioaddr, 0xff, 8) & BIT(18)) ? 8 : 6;
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return do_eeprom_cmd(priv, ioaddr, 0xffff |
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(((SROM_READ_CMD << ee_addr_size) | index) << 16),
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3 + ee_addr_size + 16);
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}
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static void send_setup_frame(struct dc2114x_priv *priv)
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{
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char setup_frame[SETUP_FRAME_LEN];
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char *pa = &setup_frame[0];
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int i;
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memset(pa, 0xff, SETUP_FRAME_LEN);
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for (i = 0; i < ETH_ALEN; i++) {
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*(pa + (i & 1)) = priv->enetaddr[i];
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if (i & 0x01)
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pa += 4;
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}
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for (i = 0; priv->tx_ring[priv->tx_new].status & cpu_to_le32(T_OWN); i++) {
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if (i < TOUT_LOOP)
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continue;
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printf("%s: tx error buffer not ready\n", priv->name);
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return;
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}
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priv->tx_ring[priv->tx_new].buf = cpu_to_le32(phys_to_bus(priv->devno,
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(u32)&setup_frame[0]));
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priv->tx_ring[priv->tx_new].des1 = cpu_to_le32(TD_TER | TD_SET | SETUP_FRAME_LEN);
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priv->tx_ring[priv->tx_new].status = cpu_to_le32(T_OWN);
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dc2114x_outl(priv, POLL_DEMAND, DE4X5_TPD);
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for (i = 0; priv->tx_ring[priv->tx_new].status & cpu_to_le32(T_OWN); i++) {
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if (i < TOUT_LOOP)
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continue;
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printf("%s: tx buffer not ready\n", priv->name);
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return;
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}
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if (le32_to_cpu(priv->tx_ring[priv->tx_new].status) != 0x7FFFFFFF) {
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printf("TX error status2 = 0x%08X\n",
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le32_to_cpu(priv->tx_ring[priv->tx_new].status));
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}
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priv->tx_new = (priv->tx_new + 1) % NUM_TX_DESC;
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}
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static int dc21x4x_send_common(struct dc2114x_priv *priv, void *packet, int length)
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{
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int status = -1;
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int i;
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if (length <= 0) {
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printf("%s: bad packet size: %d\n", priv->name, length);
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goto done;
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}
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for (i = 0; priv->tx_ring[priv->tx_new].status & cpu_to_le32(T_OWN); i++) {
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if (i < TOUT_LOOP)
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continue;
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printf("%s: tx error buffer not ready\n", priv->name);
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goto done;
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}
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priv->tx_ring[priv->tx_new].buf = cpu_to_le32(phys_to_bus(priv->devno,
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(u32)packet));
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priv->tx_ring[priv->tx_new].des1 = cpu_to_le32(TD_TER | TD_LS | TD_FS | length);
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priv->tx_ring[priv->tx_new].status = cpu_to_le32(T_OWN);
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dc2114x_outl(priv, POLL_DEMAND, DE4X5_TPD);
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for (i = 0; priv->tx_ring[priv->tx_new].status & cpu_to_le32(T_OWN); i++) {
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if (i < TOUT_LOOP)
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continue;
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printf(".%s: tx buffer not ready\n", priv->name);
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goto done;
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}
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if (le32_to_cpu(priv->tx_ring[priv->tx_new].status) & TD_ES) {
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priv->tx_ring[priv->tx_new].status = 0x0;
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goto done;
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}
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status = length;
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done:
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priv->tx_new = (priv->tx_new + 1) % NUM_TX_DESC;
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return status;
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}
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static int dc21x4x_recv_check(struct dc2114x_priv *priv)
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{
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int length = 0;
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u32 status;
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status = le32_to_cpu(priv->rx_ring[priv->rx_new].status);
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if (status & R_OWN)
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return 0;
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if (status & RD_LS) {
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/* Valid frame status. */
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if (status & RD_ES) {
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/* There was an error. */
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printf("RX error status = 0x%08X\n", status);
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return -EINVAL;
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} else {
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/* A valid frame received. */
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length = (le32_to_cpu(priv->rx_ring[priv->rx_new].status)
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>> 16);
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return length;
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}
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}
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return -EAGAIN;
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}
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static int dc21x4x_init_common(struct dc2114x_priv *priv)
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{
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int i;
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reset_de4x5(priv);
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if (dc2114x_inl(priv, DE4X5_STS) & (STS_TS | STS_RS)) {
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printf("Error: Cannot reset ethernet controller.\n");
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return -1;
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}
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dc2114x_outl(priv, OMR_SDP | OMR_PS | OMR_PM, DE4X5_OMR);
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for (i = 0; i < NUM_RX_DESC; i++) {
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priv->rx_ring[i].status = cpu_to_le32(R_OWN);
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priv->rx_ring[i].des1 = cpu_to_le32(RX_BUFF_SZ);
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priv->rx_ring[i].buf = cpu_to_le32(phys_to_bus(priv->devno,
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(u32)net_rx_packets[i]));
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priv->rx_ring[i].next = 0;
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}
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for (i = 0; i < NUM_TX_DESC; i++) {
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priv->tx_ring[i].status = 0;
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priv->tx_ring[i].des1 = 0;
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priv->tx_ring[i].buf = 0;
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priv->tx_ring[i].next = 0;
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}
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priv->rx_ring_size = NUM_RX_DESC;
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priv->tx_ring_size = NUM_TX_DESC;
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/* Write the end of list marker to the descriptor lists. */
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priv->rx_ring[priv->rx_ring_size - 1].des1 |= cpu_to_le32(RD_RER);
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priv->tx_ring[priv->tx_ring_size - 1].des1 |= cpu_to_le32(TD_TER);
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/* Tell the adapter where the TX/RX rings are located. */
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dc2114x_outl(priv, phys_to_bus(priv->devno, (u32)&priv->rx_ring),
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DE4X5_RRBA);
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dc2114x_outl(priv, phys_to_bus(priv->devno, (u32)&priv->tx_ring),
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DE4X5_TRBA);
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start_de4x5(priv);
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priv->tx_new = 0;
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priv->rx_new = 0;
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send_setup_frame(priv);
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return 0;
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}
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static void dc21x4x_halt_common(struct dc2114x_priv *priv)
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{
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stop_de4x5(priv);
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dc2114x_outl(priv, 0, DE4X5_SICR);
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}
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static void read_hw_addr(struct dc2114x_priv *priv)
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{
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u_short tmp, *p = (u_short *)(&priv->enetaddr[0]);
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int i, j = 0;
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for (i = 0; i < (ETH_ALEN >> 1); i++) {
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tmp = read_srom(priv, DE4X5_APROM, (SROM_HWADD >> 1) + i);
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*p = le16_to_cpu(tmp);
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j += *p++;
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}
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if (!j || j == 0x2fffd) {
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memset(priv->enetaddr, 0, ETH_ALEN);
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debug("Warning: can't read HW address from SROM.\n");
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}
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}
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static struct pci_device_id supported[] = {
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{ PCI_DEVICE(PCI_VENDOR_ID_DEC, PCI_DEVICE_ID_DEC_TULIP_FAST) },
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{ PCI_DEVICE(PCI_VENDOR_ID_DEC, PCI_DEVICE_ID_DEC_21142) },
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|
{ }
|
|
};
|
|
|
|
static int dc2114x_start(struct udevice *dev)
|
|
{
|
|
struct eth_pdata *plat = dev_get_plat(dev);
|
|
struct dc2114x_priv *priv = dev_get_priv(dev);
|
|
|
|
memcpy(priv->enetaddr, plat->enetaddr, sizeof(plat->enetaddr));
|
|
|
|
/* Ensure we're not sleeping. */
|
|
dm_pci_write_config8(dev, PCI_CFDA_PSM, WAKEUP);
|
|
|
|
return dc21x4x_init_common(priv);
|
|
}
|
|
|
|
static void dc2114x_stop(struct udevice *dev)
|
|
{
|
|
struct dc2114x_priv *priv = dev_get_priv(dev);
|
|
|
|
dc21x4x_halt_common(priv);
|
|
|
|
dm_pci_write_config8(dev, PCI_CFDA_PSM, SLEEP);
|
|
}
|
|
|
|
static int dc2114x_send(struct udevice *dev, void *packet, int length)
|
|
{
|
|
struct dc2114x_priv *priv = dev_get_priv(dev);
|
|
int ret;
|
|
|
|
ret = dc21x4x_send_common(priv, packet, length);
|
|
|
|
return ret ? 0 : -ETIMEDOUT;
|
|
}
|
|
|
|
static int dc2114x_recv(struct udevice *dev, int flags, uchar **packetp)
|
|
{
|
|
struct dc2114x_priv *priv = dev_get_priv(dev);
|
|
int ret;
|
|
|
|
ret = dc21x4x_recv_check(priv);
|
|
|
|
if (ret < 0) {
|
|
/* Update entry information. */
|
|
priv->rx_new = (priv->rx_new + 1) % priv->rx_ring_size;
|
|
ret = 0;
|
|
}
|
|
|
|
if (!ret)
|
|
return 0;
|
|
|
|
*packetp = net_rx_packets[priv->rx_new];
|
|
|
|
return ret - 4;
|
|
}
|
|
|
|
static int dc2114x_free_pkt(struct udevice *dev, uchar *packet, int length)
|
|
{
|
|
struct dc2114x_priv *priv = dev_get_priv(dev);
|
|
|
|
priv->rx_ring[priv->rx_new].status = cpu_to_le32(R_OWN);
|
|
|
|
/* Update entry information. */
|
|
priv->rx_new = (priv->rx_new + 1) % priv->rx_ring_size;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int dc2114x_read_rom_hwaddr(struct udevice *dev)
|
|
{
|
|
struct dc2114x_priv *priv = dev_get_priv(dev);
|
|
|
|
read_hw_addr(priv);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int dc2114x_bind(struct udevice *dev)
|
|
{
|
|
static int card_number;
|
|
char name[16];
|
|
|
|
sprintf(name, "dc2114x#%u", card_number++);
|
|
|
|
return device_set_name(dev, name);
|
|
}
|
|
|
|
static int dc2114x_probe(struct udevice *dev)
|
|
{
|
|
struct eth_pdata *plat = dev_get_plat(dev);
|
|
struct dc2114x_priv *priv = dev_get_priv(dev);
|
|
u16 command, status;
|
|
u32 iobase;
|
|
|
|
dm_pci_read_config32(dev, PCI_BASE_ADDRESS_1, &iobase);
|
|
iobase &= ~0xf;
|
|
|
|
debug("dc2114x: DEC 2114x PCI Device @0x%x\n", iobase);
|
|
|
|
priv->devno = dev;
|
|
priv->enetaddr = plat->enetaddr;
|
|
priv->iobase = (void __iomem *)dm_pci_mem_to_phys(dev, iobase);
|
|
|
|
command = PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER;
|
|
dm_pci_write_config16(dev, PCI_COMMAND, command);
|
|
dm_pci_read_config16(dev, PCI_COMMAND, &status);
|
|
if ((status & command) != command) {
|
|
printf("dc2114x: Couldn't enable IO access or Bus Mastering\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
dm_pci_write_config8(dev, PCI_LATENCY_TIMER, 0x60);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct eth_ops dc2114x_ops = {
|
|
.start = dc2114x_start,
|
|
.send = dc2114x_send,
|
|
.recv = dc2114x_recv,
|
|
.stop = dc2114x_stop,
|
|
.free_pkt = dc2114x_free_pkt,
|
|
.read_rom_hwaddr = dc2114x_read_rom_hwaddr,
|
|
};
|
|
|
|
U_BOOT_DRIVER(eth_dc2114x) = {
|
|
.name = "eth_dc2114x",
|
|
.id = UCLASS_ETH,
|
|
.bind = dc2114x_bind,
|
|
.probe = dc2114x_probe,
|
|
.ops = &dc2114x_ops,
|
|
.priv_auto = sizeof(struct dc2114x_priv),
|
|
.plat_auto = sizeof(struct eth_pdata),
|
|
};
|
|
|
|
U_BOOT_PCI_DEVICE(eth_dc2114x, supported);
|