--- /dev/null
+/*
+ * (C) Copyright 2007
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * Author: Igor Lisitsin <igor@emcraft.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+
+/*
+ * Ethernet test
+ *
+ * The Ethernet Media Access Controllers (EMAC) are tested in the
+ * internal loopback mode.
+ * The controllers are configured accordingly and several packets
+ * are transmitted. The configurable test parameters are:
+ * MIN_PACKET_LENGTH - minimum size of packet to transmit
+ * MAX_PACKET_LENGTH - maximum size of packet to transmit
+ * CONFIG_SYS_POST_ETH_LOOPS - Number of test loops. Each loop
+ * is tested with a different frame length. Starting with
+ * MAX_PACKET_LENGTH and going down to MIN_PACKET_LENGTH.
+ * Defaults to 10 and can be overriden in the board config header.
+ */
+
+#include <post.h>
+
+#if CONFIG_POST & CONFIG_SYS_POST_ETHER
+
+#include <asm/cache.h>
+#include <asm/io.h>
+#include <asm/processor.h>
+#include <asm/ppc4xx-mal.h>
+#include <asm/ppc4xx-emac.h>
+#include <malloc.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+/*
+ * Get count of EMAC devices (doesn't have to be the max. possible number
+ * supported by the cpu)
+ *
+ * CONFIG_BOARD_EMAC_COUNT added so now a "dynamic" way to configure the
+ * EMAC count is possible. As it is needed for the Kilauea/Haleakala
+ * 405EX/405EXr eval board, using the same binary.
+ */
+#if defined(CONFIG_BOARD_EMAC_COUNT)
+#define LAST_EMAC_NUM board_emac_count()
+#else /* CONFIG_BOARD_EMAC_COUNT */
+#if defined(CONFIG_HAS_ETH3)
+#define LAST_EMAC_NUM 4
+#elif defined(CONFIG_HAS_ETH2)
+#define LAST_EMAC_NUM 3
+#elif defined(CONFIG_HAS_ETH1)
+#define LAST_EMAC_NUM 2
+#else
+#define LAST_EMAC_NUM 1
+#endif
+#endif /* CONFIG_BOARD_EMAC_COUNT */
+
+#if defined(CONFIG_440SPE) || defined(CONFIG_440EPX) || defined(CONFIG_440GRX)
+#define SDR0_MFR_ETH_CLK_SEL_V(n) ((0x01<<27) / (n+1))
+#endif
+
+#define MIN_PACKET_LENGTH 64
+#define MAX_PACKET_LENGTH 1514
+#ifndef CONFIG_SYS_POST_ETH_LOOPS
+#define CONFIG_SYS_POST_ETH_LOOPS 10
+#endif
+#define PACKET_INCR ((MAX_PACKET_LENGTH - MIN_PACKET_LENGTH) / \
+ CONFIG_SYS_POST_ETH_LOOPS)
+
+static volatile mal_desc_t tx __cacheline_aligned;
+static volatile mal_desc_t rx __cacheline_aligned;
+static char *tx_buf;
+static char *rx_buf;
+
+int board_emac_count(void);
+
+static void ether_post_init (int devnum, int hw_addr)
+{
+ int i;
+#if defined(CONFIG_440GX) || \
+ defined(CONFIG_440EPX) || defined(CONFIG_440GRX) || \
+ defined(CONFIG_440SP) || defined(CONFIG_440SPE)
+ unsigned mode_reg;
+ sys_info_t sysinfo;
+#endif
+#if defined(CONFIG_440EPX) || defined(CONFIG_440GRX) || defined(CONFIG_440SPE)
+ unsigned long mfr;
+#endif
+
+#if defined(CONFIG_440GX) || \
+ defined(CONFIG_440EPX) || defined(CONFIG_440GRX) || \
+ defined(CONFIG_440SP) || defined(CONFIG_440SPE)
+ /* Need to get the OPB frequency so we can access the PHY */
+ get_sys_info (&sysinfo);
+#endif
+
+#if defined(CONFIG_440SPE) || defined(CONFIG_440EPX) || defined(CONFIG_440GRX)
+ /* provide clocks for EMAC internal loopback */
+ mfsdr (SDR0_MFR, mfr);
+ mfr |= SDR0_MFR_ETH_CLK_SEL_V(devnum);
+ mtsdr (SDR0_MFR, mfr);
+ sync ();
+#endif
+ /* reset emac */
+ out_be32 ((void*)(EMAC0_MR0 + hw_addr), EMAC_MR0_SRST);
+ sync ();
+
+ for (i = 0;; i++) {
+ if (!(in_be32 ((void*)(EMAC0_MR0 + hw_addr)) & EMAC_MR0_SRST))
+ break;
+ if (i >= 1000) {
+ printf ("Timeout resetting EMAC\n");
+ break;
+ }
+ udelay (1000);
+ }
+#if defined(CONFIG_440GX) || \
+ defined(CONFIG_440EPX) || defined(CONFIG_440GRX) || \
+ defined(CONFIG_440SP) || defined(CONFIG_440SPE)
+ /* Whack the M1 register */
+ mode_reg = 0x0;
+ if (sysinfo.freqOPB <= 50000000);
+ else if (sysinfo.freqOPB <= 66666667)
+ mode_reg |= EMAC_MR1_OBCI_66;
+ else if (sysinfo.freqOPB <= 83333333)
+ mode_reg |= EMAC_MR1_OBCI_83;
+ else if (sysinfo.freqOPB <= 100000000)
+ mode_reg |= EMAC_MR1_OBCI_100;
+ else
+ mode_reg |= EMAC_MR1_OBCI_GT100;
+
+ out_be32 ((void*)(EMAC0_MR1 + hw_addr), mode_reg);
+
+#endif /* defined(CONFIG_440GX) || defined(CONFIG_440SP) */
+
+ /* set the Mal configuration reg */
+#if defined(CONFIG_440GX) || \
+ defined(CONFIG_440EPX) || defined(CONFIG_440GRX) || \
+ defined(CONFIG_440SP) || defined(CONFIG_440SPE)
+ mtdcr (MAL0_CFG, MAL_CR_PLBB | MAL_CR_OPBBL | MAL_CR_LEA |
+ MAL_CR_PLBLT_DEFAULT | 0x00330000);
+#else
+ mtdcr (MAL0_CFG, MAL_CR_PLBB | MAL_CR_OPBBL | MAL_CR_LEA | MAL_CR_PLBLT_DEFAULT);
+ /* Errata 1.12: MAL_1 -- Disable MAL bursting */
+ if (get_pvr() == PVR_440GP_RB) {
+ mtdcr (MAL0_CFG, mfdcr(MAL0_CFG) & ~MAL_CR_PLBB);
+ }
+#endif
+ /* setup buffer descriptors */
+ tx.ctrl = MAL_TX_CTRL_WRAP;
+ tx.data_len = 0;
+ tx.data_ptr = (char*)L1_CACHE_ALIGN((u32)tx_buf);
+
+ rx.ctrl = MAL_TX_CTRL_WRAP | MAL_RX_CTRL_EMPTY;
+ rx.data_len = 0;
+ rx.data_ptr = (char*)L1_CACHE_ALIGN((u32)rx_buf);
+ flush_dcache_range((u32)&rx, (u32)&rx + sizeof(mal_desc_t));
+ flush_dcache_range((u32)&tx, (u32)&tx + sizeof(mal_desc_t));
+
+ switch (devnum) {
+ case 1:
+ /* setup MAL tx & rx channel pointers */
+#if defined (CONFIG_405EP) || defined (CONFIG_440EP) || defined (CONFIG_440GR)
+ mtdcr (MAL0_TXCTP2R, &tx);
+#else
+ mtdcr (MAL0_TXCTP1R, &tx);
+#endif
+#if defined(CONFIG_440)
+ mtdcr (MAL0_TXBADDR, 0x0);
+ mtdcr (MAL0_RXBADDR, 0x0);
+#endif
+ mtdcr (MAL0_RXCTP1R, &rx);
+ /* set RX buffer size */
+ mtdcr (MAL0_RCBS1, PKTSIZE_ALIGN / 16);
+ break;
+ case 0:
+ default:
+ /* setup MAL tx & rx channel pointers */
+#if defined(CONFIG_440)
+ mtdcr (MAL0_TXBADDR, 0x0);
+ mtdcr (MAL0_RXBADDR, 0x0);
+#endif
+ mtdcr (MAL0_TXCTP0R, &tx);
+ mtdcr (MAL0_RXCTP0R, &rx);
+ /* set RX buffer size */
+ mtdcr (MAL0_RCBS0, PKTSIZE_ALIGN / 16);
+ break;
+ }
+
+ /* Enable MAL transmit and receive channels */
+#if defined(CONFIG_405EP) || defined(CONFIG_440EP) || defined(CONFIG_440GR)
+ mtdcr (MAL0_TXCASR, (MAL_TXRX_CASR >> (devnum*2)));
+#else
+ mtdcr (MAL0_TXCASR, (MAL_TXRX_CASR >> devnum));
+#endif
+ mtdcr (MAL0_RXCASR, (MAL_TXRX_CASR >> devnum));
+
+ /* set internal loopback mode */
+#ifdef CONFIG_SYS_POST_ETHER_EXT_LOOPBACK
+ out_be32 ((void*)(EMAC0_MR1 + hw_addr), EMAC_MR1_FDE | 0 |
+ EMAC_MR1_RFS_4K | EMAC_MR1_TX_FIFO_2K |
+ EMAC_MR1_MF_100MBPS | EMAC_MR1_IST |
+ in_be32 ((void*)(EMAC0_MR1 + hw_addr)));
+#else
+ out_be32 ((void*)(EMAC0_MR1 + hw_addr), EMAC_MR1_FDE | EMAC_MR1_ILE |
+ EMAC_MR1_RFS_4K | EMAC_MR1_TX_FIFO_2K |
+ EMAC_MR1_MF_100MBPS | EMAC_MR1_IST |
+ in_be32 ((void*)(EMAC0_MR1 + hw_addr)));
+#endif
+
+ /* set transmit enable & receive enable */
+ out_be32 ((void*)(EMAC0_MR0 + hw_addr), EMAC_MR0_TXE | EMAC_MR0_RXE);
+
+ /* enable broadcast address */
+ out_be32 ((void*)(EMAC0_RXM + hw_addr), EMAC_RMR_BAE);
+
+ /* set transmit request threshold register */
+ out_be32 ((void*)(EMAC0_TRTR + hw_addr), 0x18000000); /* 256 byte threshold */
+
+ /* set receive low/high water mark register */
+#if defined(CONFIG_440)
+ /* 440s has a 64 byte burst length */
+ out_be32 ((void*)(EMAC0_RX_HI_LO_WMARK + hw_addr), 0x80009000);
+#else
+ /* 405s have a 16 byte burst length */
+ out_be32 ((void*)(EMAC0_RX_HI_LO_WMARK + hw_addr), 0x0f002000);
+#endif /* defined(CONFIG_440) */
+ out_be32 ((void*)(EMAC0_TMR1 + hw_addr), 0xf8640000);
+
+ /* Set fifo limit entry in tx mode 0 */
+ out_be32 ((void*)(EMAC0_TMR0 + hw_addr), 0x00000003);
+ /* Frame gap set */
+ out_be32 ((void*)(EMAC0_I_FRAME_GAP_REG + hw_addr), 0x00000008);
+ sync ();
+}
+
+static void ether_post_halt (int devnum, int hw_addr)
+{
+ int i = 0;
+#if defined(CONFIG_440SPE) || defined(CONFIG_440EPX) || defined(CONFIG_440GRX)
+ unsigned long mfr;
+#endif
+
+ /* 1st reset MAL channel */
+ /* Note: writing a 0 to a channel has no effect */
+#if defined(CONFIG_405EP) || defined(CONFIG_440EP) || defined(CONFIG_440GR)
+ mtdcr (MAL0_TXCARR, MAL_TXRX_CASR >> (devnum * 2));
+#else
+ mtdcr (MAL0_TXCARR, MAL_TXRX_CASR >> devnum);
+#endif
+ mtdcr (MAL0_RXCARR, MAL_TXRX_CASR >> devnum);
+
+ /* wait for reset */
+ while (mfdcr (MAL0_RXCASR) & (MAL_TXRX_CASR >> devnum)) {
+ if (i++ >= 1000)
+ break;
+ udelay (1000);
+ }
+ /* emac reset */
+ out_be32 ((void*)(EMAC0_MR0 + hw_addr), EMAC_MR0_SRST);
+
+#if defined(CONFIG_440SPE) || defined(CONFIG_440EPX) || defined(CONFIG_440GRX)
+ /* remove clocks for EMAC internal loopback */
+ mfsdr (SDR0_MFR, mfr);
+ mfr &= ~SDR0_MFR_ETH_CLK_SEL_V(devnum);
+ mtsdr (SDR0_MFR, mfr);
+#endif
+}
+
+static void ether_post_send (int devnum, int hw_addr, void *packet, int length)
+{
+ int i = 0;
+
+ while (tx.ctrl & MAL_TX_CTRL_READY) {
+ if (i++ > 100) {
+ printf ("TX timeout\n");
+ return;
+ }
+ udelay (1000);
+ invalidate_dcache_range((u32)&tx, (u32)&tx + sizeof(mal_desc_t));
+ }
+ tx.ctrl = MAL_TX_CTRL_READY | MAL_TX_CTRL_WRAP | MAL_TX_CTRL_LAST |
+ EMAC_TX_CTRL_GFCS | EMAC_TX_CTRL_GP;
+ tx.data_len = length;
+ memcpy (tx.data_ptr, packet, length);
+ flush_dcache_range((u32)&tx, (u32)&tx + sizeof(mal_desc_t));
+ flush_dcache_range((u32)tx.data_ptr, (u32)tx.data_ptr + length);
+ sync ();
+
+ out_be32 ((void*)(EMAC0_TMR0 + hw_addr), in_be32 ((void*)(EMAC0_TMR0 + hw_addr)) | EMAC_TMR0_GNP0);
+ sync ();
+}
+
+static int ether_post_recv (int devnum, int hw_addr, void *packet, int max_length)
+{
+ int length;
+ int i = 0;
+
+ while (rx.ctrl & MAL_RX_CTRL_EMPTY) {
+ if (i++ > 100) {
+ printf ("RX timeout\n");
+ return 0;
+ }
+ udelay (1000);
+ invalidate_dcache_range((u32)&rx, (u32)&rx + sizeof(mal_desc_t));
+ }
+ length = rx.data_len - 4;
+ if (length <= max_length) {
+ invalidate_dcache_range((u32)rx.data_ptr, (u32)rx.data_ptr + length);
+ memcpy(packet, rx.data_ptr, length);
+ }
+ sync ();
+
+ rx.ctrl |= MAL_RX_CTRL_EMPTY;
+ flush_dcache_range((u32)&rx, (u32)&rx + sizeof(mal_desc_t));
+ sync ();
+
+ return length;
+}
+
+ /*
+ * Test routines
+ */
+
+static void packet_fill (char *packet, int length)
+{
+ char c = (char) length;
+ int i;
+
+ /* set up ethernet header */
+ memset (packet, 0xff, 14);
+
+ for (i = 14; i < length; i++) {
+ packet[i] = c++;
+ }
+}
+
+static int packet_check (char *packet, int length)
+{
+ char c = (char) length;
+ int i;
+
+ for (i = 14; i < length; i++) {
+ if (packet[i] != c++)
+ return -1;
+ }
+
+ return 0;
+}
+
+ char packet_send[MAX_PACKET_LENGTH];
+ char packet_recv[MAX_PACKET_LENGTH];
+static int test_ctlr (int devnum, int hw_addr)
+{
+ int res = -1;
+ int length;
+ int l;
+
+ ether_post_init (devnum, hw_addr);
+
+ for (l = MAX_PACKET_LENGTH; l >= MIN_PACKET_LENGTH;
+ l -= PACKET_INCR) {
+ packet_fill (packet_send, l);
+
+ ether_post_send (devnum, hw_addr, packet_send, l);
+
+ length = ether_post_recv (devnum, hw_addr, packet_recv,
+ sizeof (packet_recv));
+
+ if (length != l || packet_check (packet_recv, length) < 0) {
+ goto Done;
+ }
+ }
+
+ res = 0;
+
+Done:
+
+ ether_post_halt (devnum, hw_addr);
+
+ if (res != 0) {
+ post_log ("EMAC%d test failed\n", devnum);
+ }
+
+ return res;
+}
+
+int ether_post_test (int flags)
+{
+ int res = 0;
+ int i;
+
+ /* Allocate tx & rx packet buffers */
+ tx_buf = malloc (PKTSIZE_ALIGN + CONFIG_SYS_CACHELINE_SIZE);
+ rx_buf = malloc (PKTSIZE_ALIGN + CONFIG_SYS_CACHELINE_SIZE);
+
+ if (!tx_buf || !rx_buf) {
+ printf ("Failed to allocate packet buffers\n");
+ res = -1;
+ goto out_free;
+ }
+
+ for (i = 0; i < LAST_EMAC_NUM; i++) {
+ if (test_ctlr (i, i*0x100))
+ res = -1;
+ }
+
+out_free:
+ free (tx_buf);
+ free (rx_buf);
+
+ return res;
+}
+
+#endif /* CONFIG_POST & CONFIG_SYS_POST_ETHER */
Code Review / kvmfornfv.git / blobdiff