Adding upstream version 6.1.76.upstream/6.1.76

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 244 insertions, 0 deletions

diff --git a/arch/powerpc/platforms/ps3/gelic_udbg.c b/arch/powerpc/platforms/ps3/gelic_udbg.c
new file mode 100644
index 000000000..6b298010f
--- /dev/null
+++ b/arch/powerpc/platforms/ps3/gelic_udbg.c
@@ -0,0 +1,244 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * udbg debug output routine via GELIC UDP broadcasts
+ *
+ * Copyright (C) 2007 Sony Computer Entertainment Inc.
+ * Copyright 2006, 2007 Sony Corporation
+ * Copyright (C) 2010 Hector Martin <hector@marcansoft.com>
+ * Copyright (C) 2011 Andre Heider <a.heider@gmail.com>
+ */
+
+#include <linux/if_ether.h>
+#include <linux/etherdevice.h>
+#include <linux/if_vlan.h>
+#include <linux/ip.h>
+#include <linux/udp.h>
+
+#include <asm/io.h>
+#include <asm/udbg.h>
+#include <asm/lv1call.h>
+
+#define GELIC_BUS_ID 1
+#define GELIC_DEVICE_ID 0
+#define GELIC_DEBUG_PORT 18194
+#define GELIC_MAX_MESSAGE_SIZE 1000
+
+#define GELIC_LV1_GET_MAC_ADDRESS 1
+#define GELIC_LV1_GET_VLAN_ID 4
+#define GELIC_LV1_VLAN_TX_ETHERNET_0 2
+
+#define GELIC_DESCR_DMA_STAT_MASK 0xf0000000
+#define GELIC_DESCR_DMA_CARDOWNED 0xa0000000
+
+#define GELIC_DESCR_TX_DMA_IKE 0x00080000
+#define GELIC_DESCR_TX_DMA_NO_CHKSUM 0x00000000
+#define GELIC_DESCR_TX_DMA_FRAME_TAIL 0x00040000
+
+#define GELIC_DESCR_DMA_CMD_NO_CHKSUM (GELIC_DESCR_DMA_CARDOWNED | \
+				       GELIC_DESCR_TX_DMA_IKE | \
+				       GELIC_DESCR_TX_DMA_NO_CHKSUM)
+
+static u64 bus_addr;
+
+struct gelic_descr {
+	/* as defined by the hardware */
+	__be32 buf_addr;
+	__be32 buf_size;
+	__be32 next_descr_addr;
+	__be32 dmac_cmd_status;
+	__be32 result_size;
+	__be32 valid_size;	/* all zeroes for tx */
+	__be32 data_status;
+	__be32 data_error;	/* all zeroes for tx */
+} __attribute__((aligned(32)));
+
+struct debug_block {
+	struct gelic_descr descr;
+	u8 pkt[1520];
+} __packed;
+
+static __iomem struct ethhdr *h_eth;
+static __iomem struct vlan_hdr *h_vlan;
+static __iomem struct iphdr *h_ip;
+static __iomem struct udphdr *h_udp;
+
+static __iomem char *pmsg;
+static __iomem char *pmsgc;
+
+static __iomem struct debug_block dbg __attribute__((aligned(32)));
+
+static int header_size;
+
+static void map_dma_mem(int bus_id, int dev_id, void *start, size_t len,
+			u64 *real_bus_addr)
+{
+	s64 result;
+	u64 real_addr = ((u64)start) & 0x0fffffffffffffffUL;
+	u64 real_end = real_addr + len;
+	u64 map_start = real_addr & ~0xfff;
+	u64 map_end = (real_end + 0xfff) & ~0xfff;
+	u64 bus_addr = 0;
+
+	u64 flags = 0xf800000000000000UL;
+
+	result = lv1_allocate_device_dma_region(bus_id, dev_id,
+						map_end - map_start, 12, 0,
+						&bus_addr);
+	if (result)
+		lv1_panic(0);
+
+	result = lv1_map_device_dma_region(bus_id, dev_id, map_start,
+					   bus_addr, map_end - map_start,
+					   flags);
+	if (result)
+		lv1_panic(0);
+
+	*real_bus_addr = bus_addr + real_addr - map_start;
+}
+
+static int unmap_dma_mem(int bus_id, int dev_id, u64 bus_addr, size_t len)
+{
+	s64 result;
+	u64 real_bus_addr;
+
+	real_bus_addr = bus_addr & ~0xfff;
+	len += bus_addr - real_bus_addr;
+	len = (len + 0xfff) & ~0xfff;
+
+	result = lv1_unmap_device_dma_region(bus_id, dev_id, real_bus_addr,
+					     len);
+	if (result)
+		return result;
+
+	return lv1_free_device_dma_region(bus_id, dev_id, real_bus_addr);
+}
+
+static void __init gelic_debug_init(void)
+{
+	s64 result;
+	u64 v2;
+	u64 mac;
+	u64 vlan_id;
+
+	result = lv1_open_device(GELIC_BUS_ID, GELIC_DEVICE_ID, 0);
+	if (result)
+		lv1_panic(0);
+
+	map_dma_mem(GELIC_BUS_ID, GELIC_DEVICE_ID, &dbg, sizeof(dbg),
+		    &bus_addr);
+
+	memset(&dbg, 0, sizeof(dbg));
+
+	dbg.descr.buf_addr = bus_addr + offsetof(struct debug_block, pkt);
+
+	wmb();
+
+	result = lv1_net_control(GELIC_BUS_ID, GELIC_DEVICE_ID,
+				 GELIC_LV1_GET_MAC_ADDRESS, 0, 0, 0,
+				 &mac, &v2);
+	if (result)
+		lv1_panic(0);
+
+	mac <<= 16;
+
+	h_eth = (struct ethhdr *)dbg.pkt;
+
+	eth_broadcast_addr(h_eth->h_dest);
+	memcpy(&h_eth->h_source, &mac, ETH_ALEN);
+
+	header_size = sizeof(struct ethhdr);
+
+	result = lv1_net_control(GELIC_BUS_ID, GELIC_DEVICE_ID,
+				 GELIC_LV1_GET_VLAN_ID,
+				 GELIC_LV1_VLAN_TX_ETHERNET_0, 0, 0,
+				 &vlan_id, &v2);
+	if (!result) {
+		h_eth->h_proto= ETH_P_8021Q;
+
+		header_size += sizeof(struct vlan_hdr);
+		h_vlan = (struct vlan_hdr *)(h_eth + 1);
+		h_vlan->h_vlan_TCI = vlan_id;
+		h_vlan->h_vlan_encapsulated_proto = ETH_P_IP;
+		h_ip = (struct iphdr *)(h_vlan + 1);
+	} else {
+		h_eth->h_proto= 0x0800;
+		h_ip = (struct iphdr *)(h_eth + 1);
+	}
+
+	header_size += sizeof(struct iphdr);
+	h_ip->version = 4;
+	h_ip->ihl = 5;
+	h_ip->ttl = 10;
+	h_ip->protocol = 0x11;
+	h_ip->saddr = 0x00000000;
+	h_ip->daddr = 0xffffffff;
+
+	header_size += sizeof(struct udphdr);
+	h_udp = (struct udphdr *)(h_ip + 1);
+	h_udp->source = GELIC_DEBUG_PORT;
+	h_udp->dest = GELIC_DEBUG_PORT;
+
+	pmsgc = pmsg = (char *)(h_udp + 1);
+}
+
+static void gelic_debug_shutdown(void)
+{
+	if (bus_addr)
+		unmap_dma_mem(GELIC_BUS_ID, GELIC_DEVICE_ID,
+			      bus_addr, sizeof(dbg));
+	lv1_close_device(GELIC_BUS_ID, GELIC_DEVICE_ID);
+}
+
+static void gelic_sendbuf(int msgsize)
+{
+	u16 *p;
+	u32 sum;
+	int i;
+
+	dbg.descr.buf_size = header_size + msgsize;
+	h_ip->tot_len = msgsize + sizeof(struct udphdr) +
+			     sizeof(struct iphdr);
+	h_udp->len = msgsize + sizeof(struct udphdr);
+
+	h_ip->check = 0;
+	sum = 0;
+	p = (u16 *)h_ip;
+	for (i = 0; i < 5; i++)
+		sum += *p++;
+	h_ip->check = ~(sum + (sum >> 16));
+
+	dbg.descr.dmac_cmd_status = GELIC_DESCR_DMA_CMD_NO_CHKSUM |
+				    GELIC_DESCR_TX_DMA_FRAME_TAIL;
+	dbg.descr.result_size = 0;
+	dbg.descr.data_status = 0;
+
+	wmb();
+
+	lv1_net_start_tx_dma(GELIC_BUS_ID, GELIC_DEVICE_ID, bus_addr, 0);
+
+	while ((dbg.descr.dmac_cmd_status & GELIC_DESCR_DMA_STAT_MASK) ==
+	       GELIC_DESCR_DMA_CARDOWNED)
+		cpu_relax();
+}
+
+static void ps3gelic_udbg_putc(char ch)
+{
+	*pmsgc++ = ch;
+	if (ch == '\n' || (pmsgc-pmsg) >= GELIC_MAX_MESSAGE_SIZE) {
+		gelic_sendbuf(pmsgc-pmsg);
+		pmsgc = pmsg;
+	}
+}
+
+void __init udbg_init_ps3gelic(void)
+{
+	gelic_debug_init();
+	udbg_putc = ps3gelic_udbg_putc;
+}
+
+void udbg_shutdown_ps3gelic(void)
+{
+	udbg_putc = NULL;
+	gelic_debug_shutdown();
+}
+EXPORT_SYMBOL(udbg_shutdown_ps3gelic);