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u-boot/arch/powerpc/cpu/mpc85xx/ether_fcc.c
Masahiro Yamada b75d8dc564 treewide: convert bd_t to struct bd_info by coccinelle 
The Linux coding style guide (Documentation/process/coding-style.rst)
clearly says:

  It's a **mistake** to use typedef for structures and pointers.

Besides, using typedef for structures is annoying when you try to make
headers self-contained.

Let's say you have the following function declaration in a header:

  void foo(bd_t *bd);

This is not self-contained since bd_t is not defined.

To tell the compiler what 'bd_t' is, you need to include <asm/u-boot.h>

  #include <asm/u-boot.h>
  void foo(bd_t *bd);

Then, the include direcective pulls in more bloat needlessly.

If you use 'struct bd_info' instead, it is enough to put a forward
declaration as follows:

  struct bd_info;
  void foo(struct bd_info *bd);

Right, typedef'ing bd_t is a mistake.

I used coccinelle to generate this commit.

The semantic patch that makes this change is as follows:

  <smpl>
  @@
  typedef bd_t;
  @@
  -bd_t
  +struct bd_info
  </smpl>

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2020-07-17 09:30:13 -04:00

460 lines
13 KiB
C
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// SPDX-License-Identifier: GPL-2.0+
/*
* MPC8560 FCC Fast Ethernet
* Copyright (c) 2003 Motorola,Inc.
* Xianghua Xiao, (X.Xiao@motorola.com)
*
* Copyright (c) 2000 MontaVista Software, Inc. Dan Malek (dmalek@jlc.net)
*
* (C) Copyright 2000 Sysgo Real-Time Solutions, GmbH <www.elinos.com>
* Marius Groeger <mgroeger@sysgo.de>
*/
/*
* MPC8560 FCC Fast Ethernet
* Basic ET HW initialization and packet RX/TX routines
*
* This code will not perform the IO port configuration. This should be
* done in the iop_conf_t structure specific for the board.
*
* TODO:
* add a PHY driver to do the negotiation
* reflect negotiation results in FPSMR
* look for ways to configure the board specific stuff elsewhere, eg.
* config_xxx.h or the board directory
*/
#include <common.h>
#include <malloc.h>
#include <asm/cpm_85xx.h>
#include <command.h>
#include <config.h>
#include <net.h>
#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
#include <miiphy.h>
#endif
#if defined(CONFIG_ETHER_ON_FCC) && defined(CONFIG_CMD_NET)
static struct ether_fcc_info_s
{
int ether_index;
int proff_enet;
ulong cpm_cr_enet_sblock;
ulong cpm_cr_enet_page;
ulong cmxfcr_mask;
ulong cmxfcr_value;
}
ether_fcc_info[] =
{
#ifdef CONFIG_ETHER_ON_FCC1
{
0,
PROFF_FCC1,
CPM_CR_FCC1_SBLOCK,
CPM_CR_FCC1_PAGE,
CONFIG_SYS_CMXFCR_MASK1,
CONFIG_SYS_CMXFCR_VALUE1
},
#endif
#ifdef CONFIG_ETHER_ON_FCC2
{
1,
PROFF_FCC2,
CPM_CR_FCC2_SBLOCK,
CPM_CR_FCC2_PAGE,
CONFIG_SYS_CMXFCR_MASK2,
CONFIG_SYS_CMXFCR_VALUE2
},
#endif
#ifdef CONFIG_ETHER_ON_FCC3
{
2,
PROFF_FCC3,
CPM_CR_FCC3_SBLOCK,
CPM_CR_FCC3_PAGE,
CONFIG_SYS_CMXFCR_MASK3,
CONFIG_SYS_CMXFCR_VALUE3
},
#endif
};
/*---------------------------------------------------------------------*/
/* Maximum input DMA size. Must be a should(?) be a multiple of 4. */
#define PKT_MAXDMA_SIZE 1520
/* The FCC stores dest/src/type, data, and checksum for receive packets. */
#define PKT_MAXBUF_SIZE 1518
#define PKT_MINBUF_SIZE 64
/* Maximum input buffer size. Must be a multiple of 32. */
#define PKT_MAXBLR_SIZE 1536
#define TOUT_LOOP 1000000
#define TX_BUF_CNT 2
static uint rxIdx; /* index of the current RX buffer */
static uint txIdx; /* index of the current TX buffer */
/*
* FCC Ethernet Tx and Rx buffer descriptors.
* Provide for Double Buffering
* Note: PKTBUFSRX is defined in net.h
*/
typedef volatile struct rtxbd {
cbd_t rxbd[PKTBUFSRX];
cbd_t txbd[TX_BUF_CNT];
} RTXBD;
/* Good news: the FCC supports external BDs! */
#ifdef __GNUC__
static RTXBD rtx __attribute__ ((aligned(8)));
#else
#error "rtx must be 64-bit aligned"
#endif
#undef ET_DEBUG
static int fec_send(struct eth_device *dev, void *packet, int length)
{
int i = 0;
int result = 0;
if (length <= 0) {
printf("fec: bad packet size: %d\n", length);
goto out;
}
for(i=0; rtx.txbd[txIdx].cbd_sc & BD_ENET_TX_READY; i++) {
if (i >= TOUT_LOOP) {
printf("fec: tx buffer not ready\n");
goto out;
}
}
rtx.txbd[txIdx].cbd_bufaddr = (uint)packet;
rtx.txbd[txIdx].cbd_datlen = length;
rtx.txbd[txIdx].cbd_sc |= (BD_ENET_TX_READY | BD_ENET_TX_LAST | \
BD_ENET_TX_TC | BD_ENET_TX_PAD);
for(i=0; rtx.txbd[txIdx].cbd_sc & BD_ENET_TX_READY; i++) {
if (i >= TOUT_LOOP) {
printf("fec: tx error\n");
goto out;
}
}
#ifdef ET_DEBUG
printf("cycles: 0x%x txIdx=0x%04x status: 0x%04x\n", i, txIdx,rtx.txbd[txIdx].cbd_sc);
printf("packets at 0x%08x, length_in_bytes=0x%x\n",(uint)packet,length);
for(i=0;i<(length/16 + 1);i++) {
printf("%08x %08x %08x %08x\n",*((uint *)rtx.txbd[txIdx].cbd_bufaddr+i*4),\
*((uint *)rtx.txbd[txIdx].cbd_bufaddr + i*4 + 1),*((uint *)rtx.txbd[txIdx].cbd_bufaddr + i*4 + 2), \
*((uint *)rtx.txbd[txIdx].cbd_bufaddr + i*4 + 3));
}
#endif
/* return only status bits */
result = rtx.txbd[txIdx].cbd_sc & BD_ENET_TX_STATS;
txIdx = (txIdx + 1) % TX_BUF_CNT;
out:
return result;
}
static int fec_recv(struct eth_device* dev)
{
int length;
for (;;)
{
if (rtx.rxbd[rxIdx].cbd_sc & BD_ENET_RX_EMPTY) {
length = -1;
break; /* nothing received - leave for() loop */
}
length = rtx.rxbd[rxIdx].cbd_datlen;
if (rtx.rxbd[rxIdx].cbd_sc & 0x003f) {
printf("fec: rx error %04x\n", rtx.rxbd[rxIdx].cbd_sc);
}
else {
/* Pass the packet up to the protocol layers. */
net_process_received_packet(net_rx_packets[rxIdx], length - 4);
}
/* Give the buffer back to the FCC. */
rtx.rxbd[rxIdx].cbd_datlen = 0;
/* wrap around buffer index when necessary */
if ((rxIdx + 1) >= PKTBUFSRX) {
rtx.rxbd[PKTBUFSRX - 1].cbd_sc = (BD_ENET_RX_WRAP | BD_ENET_RX_EMPTY);
rxIdx = 0;
}
else {
rtx.rxbd[rxIdx].cbd_sc = BD_ENET_RX_EMPTY;
rxIdx++;
}
}
return length;
}
static int fec_init(struct eth_device* dev, struct bd_info *bis)
{
struct ether_fcc_info_s * info = dev->priv;
int i;
volatile ccsr_cpm_t *cpm = (ccsr_cpm_t *)CONFIG_SYS_MPC85xx_CPM_ADDR;
volatile ccsr_cpm_cp_t *cp = &(cpm->im_cpm_cp);
fcc_enet_t *pram_ptr;
unsigned long mem_addr;
#if 0
mii_discover_phy();
#endif
/* 28.9 - (1-2): ioports have been set up already */
/* 28.9 - (3): connect FCC's tx and rx clocks */
cpm->im_cpm_mux.cmxuar = 0; /* ATM */
cpm->im_cpm_mux.cmxfcr = (cpm->im_cpm_mux.cmxfcr & ~info->cmxfcr_mask) |
info->cmxfcr_value;
/* 28.9 - (4): GFMR: disable tx/rx, CCITT CRC, set Mode Ethernet */
if(info->ether_index == 0) {
cpm->im_cpm_fcc1.gfmr = FCC_GFMR_MODE_ENET | FCC_GFMR_TCRC_32;
} else if (info->ether_index == 1) {
cpm->im_cpm_fcc2.gfmr = FCC_GFMR_MODE_ENET | FCC_GFMR_TCRC_32;
} else if (info->ether_index == 2) {
cpm->im_cpm_fcc3.gfmr = FCC_GFMR_MODE_ENET | FCC_GFMR_TCRC_32;
}
/* 28.9 - (5): FPSMR: enable full duplex, select CCITT CRC for Ethernet,MII */
if(info->ether_index == 0) {
cpm->im_cpm_fcc1.fpsmr = CONFIG_SYS_FCC_PSMR | FCC_PSMR_ENCRC;
} else if (info->ether_index == 1){
cpm->im_cpm_fcc2.fpsmr = CONFIG_SYS_FCC_PSMR | FCC_PSMR_ENCRC;
} else if (info->ether_index == 2){
cpm->im_cpm_fcc3.fpsmr = CONFIG_SYS_FCC_PSMR | FCC_PSMR_ENCRC;
}
/* 28.9 - (6): FDSR: Ethernet Syn */
if(info->ether_index == 0) {
cpm->im_cpm_fcc1.fdsr = 0xD555;
} else if (info->ether_index == 1) {
cpm->im_cpm_fcc2.fdsr = 0xD555;
} else if (info->ether_index == 2) {
cpm->im_cpm_fcc3.fdsr = 0xD555;
}
/* reset indeces to current rx/tx bd (see eth_send()/eth_rx()) */
rxIdx = 0;
txIdx = 0;
/* Setup Receiver Buffer Descriptors */
for (i = 0; i < PKTBUFSRX; i++)
{
rtx.rxbd[i].cbd_sc = BD_ENET_RX_EMPTY;
rtx.rxbd[i].cbd_datlen = 0;
rtx.rxbd[i].cbd_bufaddr = (uint)net_rx_packets[i];
}
rtx.rxbd[PKTBUFSRX - 1].cbd_sc |= BD_ENET_RX_WRAP;
/* Setup Ethernet Transmitter Buffer Descriptors */
for (i = 0; i < TX_BUF_CNT; i++)
{
rtx.txbd[i].cbd_sc = 0;
rtx.txbd[i].cbd_datlen = 0;
rtx.txbd[i].cbd_bufaddr = 0;
}
rtx.txbd[TX_BUF_CNT - 1].cbd_sc |= BD_ENET_TX_WRAP;
/* 28.9 - (7): initialize parameter ram */
pram_ptr = (fcc_enet_t *)&(cpm->im_dprambase[info->proff_enet]);
/* clear whole structure to make sure all reserved fields are zero */
memset((void*)pram_ptr, 0, sizeof(fcc_enet_t));
/*
* common Parameter RAM area
*
* Allocate space in the reserved FCC area of DPRAM for the
* internal buffers. No one uses this space (yet), so we
* can do this. Later, we will add resource management for
* this area.
* CPM_FCC_SPECIAL_BASE: 0xB000 for MPC8540, MPC8560
* 0x9000 for MPC8541, MPC8555
*/
mem_addr = CPM_FCC_SPECIAL_BASE + ((info->ether_index) * 64);
pram_ptr->fen_genfcc.fcc_riptr = mem_addr;
pram_ptr->fen_genfcc.fcc_tiptr = mem_addr+32;
/*
* Set maximum bytes per receive buffer.
* It must be a multiple of 32.
*/
pram_ptr->fen_genfcc.fcc_mrblr = PKT_MAXBLR_SIZE; /* 1536 */
/* localbus SDRAM should be preferred */
pram_ptr->fen_genfcc.fcc_rstate = (CPMFCR_GBL | CPMFCR_EB |
CONFIG_SYS_CPMFCR_RAMTYPE) << 24;
pram_ptr->fen_genfcc.fcc_rbase = (unsigned int)(&rtx.rxbd[rxIdx]);
pram_ptr->fen_genfcc.fcc_rbdstat = 0;
pram_ptr->fen_genfcc.fcc_rbdlen = 0;
pram_ptr->fen_genfcc.fcc_rdptr = 0;
/* localbus SDRAM should be preferred */
pram_ptr->fen_genfcc.fcc_tstate = (CPMFCR_GBL | CPMFCR_EB |
CONFIG_SYS_CPMFCR_RAMTYPE) << 24;
pram_ptr->fen_genfcc.fcc_tbase = (unsigned int)(&rtx.txbd[txIdx]);
pram_ptr->fen_genfcc.fcc_tbdstat = 0;
pram_ptr->fen_genfcc.fcc_tbdlen = 0;
pram_ptr->fen_genfcc.fcc_tdptr = 0;
/* protocol-specific area */
pram_ptr->fen_statbuf = 0x0;
pram_ptr->fen_cmask = 0xdebb20e3; /* CRC mask */
pram_ptr->fen_cpres = 0xffffffff; /* CRC preset */
pram_ptr->fen_crcec = 0;
pram_ptr->fen_alec = 0;
pram_ptr->fen_disfc = 0;
pram_ptr->fen_retlim = 15; /* Retry limit threshold */
pram_ptr->fen_retcnt = 0;
pram_ptr->fen_pper = 0;
pram_ptr->fen_boffcnt = 0;
pram_ptr->fen_gaddrh = 0;
pram_ptr->fen_gaddrl = 0;
pram_ptr->fen_mflr = PKT_MAXBUF_SIZE; /* maximum frame length register */
/*
* Set Ethernet station address.
*
* This is supplied in the board information structure, so we
* copy that into the controller.
* So far we have only been given one Ethernet address. We make
* it unique by setting a few bits in the upper byte of the
* non-static part of the address.
*/
#define ea eth_get_ethaddr()
pram_ptr->fen_paddrh = (ea[5] << 8) + ea[4];
pram_ptr->fen_paddrm = (ea[3] << 8) + ea[2];
pram_ptr->fen_paddrl = (ea[1] << 8) + ea[0];
#undef ea
pram_ptr->fen_ibdcount = 0;
pram_ptr->fen_ibdstart = 0;
pram_ptr->fen_ibdend = 0;
pram_ptr->fen_txlen = 0;
pram_ptr->fen_iaddrh = 0; /* disable hash */
pram_ptr->fen_iaddrl = 0;
pram_ptr->fen_minflr = PKT_MINBUF_SIZE; /* minimum frame length register: 64 */
/* pad pointer. use tiptr since we don't need a specific padding char */
pram_ptr->fen_padptr = pram_ptr->fen_genfcc.fcc_tiptr;
pram_ptr->fen_maxd1 = PKT_MAXDMA_SIZE; /* maximum DMA1 length:1520 */
pram_ptr->fen_maxd2 = PKT_MAXDMA_SIZE; /* maximum DMA2 length:1520 */
#if defined(ET_DEBUG)
printf("parm_ptr(0xff788500) = %p\n",pram_ptr);
printf("pram_ptr->fen_genfcc.fcc_rbase %08x\n",
pram_ptr->fen_genfcc.fcc_rbase);
printf("pram_ptr->fen_genfcc.fcc_tbase %08x\n",
pram_ptr->fen_genfcc.fcc_tbase);
#endif
/* 28.9 - (8)(9): clear out events in FCCE */
/* 28.9 - (9): FCCM: mask all events */
if(info->ether_index == 0) {
cpm->im_cpm_fcc1.fcce = ~0x0;
cpm->im_cpm_fcc1.fccm = 0;
} else if (info->ether_index == 1) {
cpm->im_cpm_fcc2.fcce = ~0x0;
cpm->im_cpm_fcc2.fccm = 0;
} else if (info->ether_index == 2) {
cpm->im_cpm_fcc3.fcce = ~0x0;
cpm->im_cpm_fcc3.fccm = 0;
}
/* 28.9 - (10-12): we don't use ethernet interrupts */
/* 28.9 - (13)
*
* Let's re-initialize the channel now. We have to do it later
* than the manual describes because we have just now finished
* the BD initialization.
*/
cp->cpcr = mk_cr_cmd(info->cpm_cr_enet_page,
info->cpm_cr_enet_sblock,
0x0c,
CPM_CR_INIT_TRX) | CPM_CR_FLG;
do {
__asm__ __volatile__ ("eieio");
} while (cp->cpcr & CPM_CR_FLG);
/* 28.9 - (14): enable tx/rx in gfmr */
if(info->ether_index == 0) {
cpm->im_cpm_fcc1.gfmr |= FCC_GFMR_ENT | FCC_GFMR_ENR;
} else if (info->ether_index == 1) {
cpm->im_cpm_fcc2.gfmr |= FCC_GFMR_ENT | FCC_GFMR_ENR;
} else if (info->ether_index == 2) {
cpm->im_cpm_fcc3.gfmr |= FCC_GFMR_ENT | FCC_GFMR_ENR;
}
return 1;
}
static void fec_halt(struct eth_device* dev)
{
struct ether_fcc_info_s * info = dev->priv;
volatile ccsr_cpm_t *cpm = (ccsr_cpm_t *)CONFIG_SYS_MPC85xx_CPM_ADDR;
/* write GFMR: disable tx/rx */
if(info->ether_index == 0) {
cpm->im_cpm_fcc1.gfmr &= ~(FCC_GFMR_ENT | FCC_GFMR_ENR);
} else if(info->ether_index == 1) {
cpm->im_cpm_fcc2.gfmr &= ~(FCC_GFMR_ENT | FCC_GFMR_ENR);
} else if(info->ether_index == 2) {
cpm->im_cpm_fcc3.gfmr &= ~(FCC_GFMR_ENT | FCC_GFMR_ENR);
}
}
int fec_initialize(struct bd_info *bis)
{
struct eth_device* dev;
int i;
for (i = 0; i < ARRAY_SIZE(ether_fcc_info); i++)
{
dev = (struct eth_device*) malloc(sizeof *dev);
memset(dev, 0, sizeof *dev);
sprintf(dev->name, "FCC%d",
ether_fcc_info[i].ether_index + 1);
dev->priv = &ether_fcc_info[i];
dev->init = fec_init;
dev->halt = fec_halt;
dev->send = fec_send;
dev->recv = fec_recv;
eth_register(dev);
#if (defined(CONFIG_MII) || defined(CONFIG_CMD_MII)) \
&& defined(CONFIG_BITBANGMII)
int retval;
struct mii_dev *mdiodev = mdio_alloc();
if (!mdiodev)
return -ENOMEM;
strncpy(mdiodev->name, dev->name, MDIO_NAME_LEN);
mdiodev->read = bb_miiphy_read;
mdiodev->write = bb_miiphy_write;
retval = mdio_register(mdiodev);
if (retval < 0)
return retval;
#endif
}
return 1;
}
#endif
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