[PATCH] Ethtool support for the new PowerPC 4xx on-chip ethernet controller driver

[Eugene Surovegin <ebs@ebshome.net>]

Jeff,

this patch adds PPC4xx EMAC support to Ethtool. Patch was generated 
against your Ethtool BK repo - I haven't found anything more recent. 
Let me know if you have gkernel GIT repository somewhere and I'll redo 
the patch if needed.

Signed-off-by: Eugene Surovegin <ebs@ebshome.net>

diff -Nru a/Makefile.am b/Makefile.am
--- a/Makefile.am	2005-03-23 01:20:59 -08:00
+++ b/Makefile.am	2005-03-23 01:20:59 -08:00
@@ -6,7 +6,7 @@
 sbin_PROGRAMS = ethtool
 ethtool_SOURCES = de2104x.c ethtool.c ethtool-copy.h ethtool-util.h natsemi.c \
                   e1000.c realtek.c e100.c tg3.c amd8111e.c pcnet32.c \
-                  fec_8xx.c ixgb.c skge.c
+                  fec_8xx.c ibm_emac.c ixgb.c skge.c
 
 dist-hook:
 	cp $(top_srcdir)/ethtool.spec $(distdir)
diff -Nru a/ethtool-util.h b/ethtool-util.h
--- a/ethtool-util.h	2005-03-23 01:20:59 -08:00
+++ b/ethtool-util.h	2005-03-23 01:20:59 -08:00
@@ -45,4 +45,7 @@
 /* SysKonnect Gigabit Yukon Family */
 int skge_dump_regs(struct ethtool_drvinfo *info, struct ethtool_regs *regs);
 
+/* PowerPC 4xx on-chip Ethernet controller */
+int ibm_emac_dump_regs(struct ethtool_drvinfo *info, struct ethtool_regs *regs);
+
 #endif
diff -Nru a/ethtool.c b/ethtool.c
--- a/ethtool.c	2005-03-23 01:20:59 -08:00
+++ b/ethtool.c	2005-03-23 01:20:59 -08:00
@@ -1015,6 +1015,7 @@
 	{ "fec_8xx", fec_8xx_dump_regs },
 	{ "ixgb", ixgb_dump_regs },
 	{ "skge", skge_dump_regs },
+	{ "ibm_emac", ibm_emac_dump_regs },
 };
 
 static int dump_regs(struct ethtool_drvinfo *info, struct ethtool_regs *regs)
diff -Nru a/ibm_emac.c b/ibm_emac.c
--- /dev/null	Wed Dec 31 16:00:00 196900
+++ b/ibm_emac.c	2005-03-23 01:20:59 -08:00
@@ -0,0 +1,244 @@
+/*
+ *  Copyright (c) 2004, 2005 Zultys Technologies 
+ *  Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net>
+ */
+#include <stdio.h>
+#include <stdint.h>
+#include <stddef.h>
+
+#include "ethtool-util.h"
+
+/* Ethtool get_regs complex data.
+ * we want to get not just EMAC registers, but also MAL, ZMII, RGMII, TAH 
+ * when available.
+ * 
+ * Returned BLOB consists of the ibm_emac_ethtool_regs_hdr, 
+ * MAL registers, EMAC registers and optional ZMII, RGMII, TAH registers.
+ * Each register component is preceded with emac_ethtool_regs_subhdr.
+ * Order of the optional headers follows their relative bit posititions 
+ * in emac_ethtool_regs_hdr.components
+ */
+#define EMAC_ETHTOOL_REGS_ZMII		0x00000001
+#define EMAC_ETHTOOL_REGS_RGMII		0x00000002
+#define EMAC_ETHTOOL_REGS_TAH		0x00000004
+
+struct emac_ethtool_regs_hdr {
+	u32 components;
+};
+
+struct emac_ethtool_regs_subhdr {
+	u32 version;
+	u32 index;
+};
+
+struct emac_regs {
+	u32 mr0;
+	u32 mr1;
+	u32 tmr0;
+	u32 tmr1;
+	u32 rmr;
+	u32 isr;
+	u32 iser;
+	u32 iahr;
+	u32 ialr;
+	u32 vtpid;
+	u32 vtci;
+	u32 ptr;
+	u32 iaht1;
+	u32 iaht2;
+	u32 iaht3;
+	u32 iaht4;
+	u32 gaht1;
+	u32 gaht2;
+	u32 gaht3;
+	u32 gaht4;
+	u32 lsah;
+	u32 lsal;
+	u32 ipgvr;
+	u32 stacr;
+	u32 trtr;
+	u32 rwmr;
+	u32 octx;
+	u32 ocrx;
+	u32 ipcr;
+};
+
+struct mal_regs {
+	u32 tx_count;
+	u32 rx_count;
+
+	u32 cfg;
+	u32 esr;
+	u32 ier;
+	u32 tx_casr;
+	u32 tx_carr;
+	u32 tx_eobisr;
+	u32 tx_deir;
+	u32 rx_casr;
+	u32 rx_carr;
+	u32 rx_eobisr;
+	u32 rx_deir;
+	u32 tx_ctpr[32];
+	u32 rx_ctpr[32];
+	u32 rcbs[32];
+};
+
+struct zmii_regs {
+	u32 fer;
+	u32 ssr;
+	u32 smiisr;
+};
+
+struct rgmii_regs {
+	u32 fer;
+	u32 ssr;
+};
+
+struct tah_regs {
+	u32 revid;
+	u32 pad[3];
+	u32 mr;
+	u32 ssr0;
+	u32 ssr1;
+	u32 ssr2;
+	u32 ssr3;
+	u32 ssr4;
+	u32 ssr5;
+	u32 tsr;
+};
+
+static void *print_emac_regs(void *buf)
+{
+	struct emac_ethtool_regs_subhdr *hdr = buf;
+	struct emac_regs *p = (struct emac_regs *)(hdr + 1);
+	void *res = p + 1;
+
+	printf("EMAC%d Registers\n", hdr->index);
+	printf("-----------------\n");
+	printf("MR0   = 0x%08x MR1  = 0x%08x RMR = 0x%08x\n"
+	       "ISR   = 0x%08x ISER = 0x%08x\n"
+	       "TMR0  = 0x%08x TMR1 = 0x%08x\n"
+	       "TRTR  = 0x%08x RWMR = 0x%08x\n"
+	       "IAR   = %04x%08x\n"
+	       "LSA   = %04x%08x\n"
+	       "IAHT  = 0x%04x 0x%04x 0x%04x 0x%04x\n"
+	       "GAHT  = 0x%04x 0x%04x 0x%04x 0x%04x\n"
+	       "VTPID = 0x%04x VTCI = 0x%04x\n"
+	       "IPGVR = 0x%04x STACR = 0x%08x\n"
+	       "OCTX  = 0x%08x OCRX = 0x%08x\n",
+	       p->mr0, p->mr1, p->rmr,
+	       p->isr, p->iser,
+	       p->tmr0, p->tmr1,
+	       p->trtr, p->rwmr,
+	       p->iahr, p->ialr,
+	       p->lsah, p->lsal,
+	       p->iaht1, p->iaht2, p->iaht3, p->iaht4,
+	       p->gaht1, p->gaht2, p->gaht3, p->gaht4,
+	       p->vtpid, p->vtci, p->ipgvr, p->stacr, p->octx, p->ocrx);
+
+	if (hdr->version)
+		printf(" IPCR = 0x%08x\n\n", p->ipcr);
+	else {
+		printf("\n\n");
+		res -= sizeof(u32);
+	}
+	return res;
+}
+
+static void *print_mal_regs(void *buf)
+{
+	struct emac_ethtool_regs_subhdr *hdr = buf;
+	struct mal_regs *p = (struct mal_regs *)(hdr + 1);
+	int i;
+
+	printf("MAL%d Registers\n", hdr->index);
+	printf("-----------------\n");
+	printf("CFG = 0x%08x ESR = 0x%08x IER = 0x%08x\n"
+	       "TX|CASR = 0x%08x CARR = 0x%08x EOBISR = 0x%08x DEIR = 0x%08x\n"
+	       "RX|CASR = 0x%08x CARR = 0x%08x EOBISR = 0x%08x DEIR = 0x%08x\n",
+	       p->cfg, p->esr, p->ier,
+	       p->tx_casr, p->tx_carr, p->tx_eobisr, p->tx_deir,
+	       p->rx_casr, p->rx_carr, p->rx_eobisr, p->rx_deir);
+
+	printf("TX|");
+	for (i = 0; i < p->tx_count; ++i) {
+		if (i && !(i % 4))
+			printf("\n   ");
+		printf("CTP%d = 0x%08x ", i, p->tx_ctpr[i]);
+	}
+	printf("\nRX|");
+	for (i = 0; i < p->rx_count; ++i) {
+		if (i && !(i % 4))
+			printf("\n   ");
+		printf("CTP%d = 0x%08x ", i, p->rx_ctpr[i]);
+	}
+	printf("\n   ");
+	for (i = 0; i < p->rx_count; ++i) {
+		u32 r = p->rcbs[i];
+		if (i && !(i % 3))
+			printf("\n   ");
+		printf("RCBS%d = 0x%08x (%d) ", i, r, r * 16);
+	}
+	printf("\n\n");
+	return p + 1;
+}
+
+static void *print_zmii_regs(void *buf)
+{
+	struct emac_ethtool_regs_subhdr *hdr = buf;
+	struct zmii_regs *p = (struct zmii_regs *)(hdr + 1);
+
+	printf("ZMII%d Registers\n", hdr->index);
+	printf("-----------------\n");
+	printf("FER    = %08x SSR = %08x\n"
+	       "SMIISR = %08x\n\n", p->fer, p->ssr, p->smiisr);
+
+	return p + 1;
+}
+
+static void *print_rgmii_regs(void *buf)
+{
+	struct emac_ethtool_regs_subhdr *hdr = buf;
+	struct rgmii_regs *p = (struct rgmii_regs *)(hdr + 1);
+
+	printf("RGMII%d Registers\n", hdr->index);
+	printf("-----------------\n");
+	printf("FER    = %08x SSR = %08x\n\n", p->fer, p->ssr);
+
+	return p + 1;
+}
+
+static void *print_tah_regs(void *buf)
+{
+	struct emac_ethtool_regs_subhdr *hdr = buf;
+	struct tah_regs *p = (struct tah_regs *)(hdr + 1);
+
+	printf("TAH%d Registers\n", hdr->index);
+	printf("-----------------\n");
+
+	printf("REVID = %08x MR = %08x TSR = %08x\n"
+	       "SSR0  = %08x SSR1 = %08x SSR2 = %08x\n"
+	       "SSR3  = %08x SSR4 = %08x SSR5 = %08x\n\n",
+	       p->revid, p->mr, p->tsr,
+	       p->ssr0, p->ssr1, p->ssr2, p->ssr3, p->ssr4, p->ssr5);
+
+	return p + 1;
+}
+
+int ibm_emac_dump_regs(struct ethtool_drvinfo *info, struct ethtool_regs *regs)
+{
+	struct emac_ethtool_regs_hdr *hdr =
+	    (struct emac_ethtool_regs_hdr *)regs->data;
+	void *buf = hdr + 1;
+
+	buf = print_mal_regs(buf);
+	buf = print_emac_regs(buf);
+	if (hdr->components & EMAC_ETHTOOL_REGS_ZMII)
+		buf = print_zmii_regs(buf);
+	if (hdr->components & EMAC_ETHTOOL_REGS_RGMII)
+		buf = print_rgmii_regs(buf);
+	if (hdr->components & EMAC_ETHTOOL_REGS_TAH)
+		print_tah_regs(buf);
+
+	return 0;
+}