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Message-Id: <20070619183956.F224.MOKUNO@sm.sony.co.jp>
Date: Tue, 19 Jun 2007 19:39:22 +0900
From: MOKUNO Masakazu <mokuno@...sony.co.jp>
To: Jeff Garzik <jeff@...zik.org>
Cc: netdev@...r.kernel.org, Geoff Levand <geoffrey.levand@...sony.com>,
Geert Uytterhoeven <Geert.Uytterhoeven@...ycom.com>
Subject: [PATCH] ps3: gigabit ethernet driver for PS3, take2
Hi,
This is the second submission of the network driver for PS3.
This version have been updated to address issues raised in the review.
Please apply for 2.6.23.
From: Masakazu Mokuno <mokuno@...sony.co.jp>
Add Gigabit Ethernet support for the PS3 game console. The module will
be called ps3_gelic.
CC: Geoff Levand <geoffrey.levand@...sony.com>
Signed-off-by: Masakazu Mokuno <mokuno@...sony.co.jp>
---
MAINTAINERS | 6
drivers/net/Kconfig | 10
drivers/net/Makefile | 2
drivers/net/gelic_net.c | 1578 ++++++++++++++++++++++++++++++++++++++++++++++++
drivers/net/gelic_net.h | 241 +++++++
5 files changed, 1837 insertions(+)
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -2920,6 +2920,12 @@ M: mikpe@...uu.se
L: linux-ide@...r.kernel.org
S: Maintained
+PS3 NETWORK SUPPORT
+P: Masakazu Mokuno
+M: mokuno@...sony.co.jp
+L: netdev@...r.kernel.org
+S: Supported
+
PS3 PLATFORM SUPPORT
P: Geoff Levand
M: geoffrey.levand@...sony.com
--- a/drivers/net/Kconfig
+++ b/drivers/net/Kconfig
@@ -2264,6 +2264,16 @@ config TSI108_ETH
To compile this driver as a module, choose M here: the module
will be called tsi108_eth.
+config GELIC_NET
+ tristate "PS3 Gigabit Ethernet driver"
+ depends on PPC_PS3
+ help
+ This driver supports the network device on the PS3 game
+ console. This driver has built-in support for Ethernet.
+
+ To compile this driver as a module, choose M here: the
+ module will be called ps3_gelic.
+
config GIANFAR
tristate "Gianfar Ethernet"
depends on 85xx || 83xx || PPC_86xx
--- a/drivers/net/Makefile
+++ b/drivers/net/Makefile
@@ -60,6 +60,8 @@ obj-$(CONFIG_TIGON3) += tg3.o
obj-$(CONFIG_BNX2) += bnx2.o
spidernet-y += spider_net.o spider_net_ethtool.o
obj-$(CONFIG_SPIDER_NET) += spidernet.o sungem_phy.o
+obj-$(CONFIG_GELIC_NET) += ps3_gelic.o
+ps3_gelic-objs += gelic_net.o
obj-$(CONFIG_TC35815) += tc35815.o
obj-$(CONFIG_SKGE) += skge.o
obj-$(CONFIG_SKY2) += sky2.o
--- /dev/null
+++ b/drivers/net/gelic_net.c
@@ -0,0 +1,1578 @@
+/*
+ * PS3 gelic network driver.
+ *
+ * Copyright (C) 2007 Sony Computer Entertainment Inc.
+ * Copyright 2007 Sony Corporation
+ *
+ * this file is based on: spider_net.c
+ *
+ * Network device driver for Cell Processor-Based Blade
+ *
+ * (C) Copyright IBM Corp. 2005
+ *
+ * Authors : Utz Bacher <utz.bacher@...ibm.com>
+ * Jens Osterkamp <Jens.Osterkamp@...ibm.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#undef DEBUG
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+
+#include <linux/etherdevice.h>
+#include <linux/ethtool.h>
+#include <linux/if_vlan.h>
+
+#include <linux/in.h>
+#include <linux/ip.h>
+#include <linux/tcp.h>
+
+#include <linux/dma-mapping.h>
+#include <net/checksum.h>
+#include <asm/firmware.h>
+#include <asm/ps3.h>
+#include <asm/lv1call.h>
+
+#include "gelic_net.h"
+
+#define DRV_NAME "Gelic Network Driver"
+#define DRV_VERSION "1.0"
+
+MODULE_AUTHOR("SCE Inc.");
+MODULE_DESCRIPTION("Gelic Network driver");
+MODULE_LICENSE("GPL");
+
+static inline struct device *ctodev(struct gelic_net_card *card)
+{
+ return &card->dev->core;
+}
+static inline unsigned int bus_id(struct gelic_net_card *card)
+{
+ return card->dev->bus_id;
+}
+static inline unsigned int dev_id(struct gelic_net_card *card)
+{
+ return card->dev->dev_id;
+}
+
+/* set irq_mask */
+static int gelic_net_set_irq_mask(struct gelic_net_card *card, u64 mask)
+{
+ int status;
+
+ status = lv1_net_set_interrupt_mask(bus_id(card), dev_id(card),
+ mask, 0);
+ if (status)
+ dev_info(ctodev(card),
+ "lv1_net_set_interrupt_mask failed %d\n", status);
+ return status;
+}
+static inline void gelic_net_rx_irq_on(struct gelic_net_card *card)
+{
+ gelic_net_set_irq_mask(card, card->ghiintmask | GELIC_NET_RXINT);
+}
+static inline void gelic_net_rx_irq_off(struct gelic_net_card *card)
+{
+ gelic_net_set_irq_mask(card, card->ghiintmask & ~GELIC_NET_RXINT);
+}
+/**
+ * gelic_net_get_descr_status -- returns the status of a descriptor
+ * @descr: descriptor to look at
+ *
+ * returns the status as in the dmac_cmd_status field of the descriptor
+ */
+static enum gelic_net_descr_status
+gelic_net_get_descr_status(struct gelic_net_descr *descr)
+{
+ u32 cmd_status;
+
+ cmd_status = descr->dmac_cmd_status;
+ cmd_status >>= GELIC_NET_DESCR_IND_PROC_SHIFT;
+ return cmd_status;
+}
+
+/**
+ * gelic_net_set_descr_status -- sets the status of a descriptor
+ * @descr: descriptor to change
+ * @status: status to set in the descriptor
+ *
+ * changes the status to the specified value. Doesn't change other bits
+ * in the status
+ */
+static void gelic_net_set_descr_status(struct gelic_net_descr *descr,
+ enum gelic_net_descr_status status)
+{
+ u32 cmd_status;
+
+ /* read the status */
+ cmd_status = descr->dmac_cmd_status;
+ /* clean the upper 4 bits */
+ cmd_status &= GELIC_NET_DESCR_IND_PROC_MASKO;
+ /* add the status to it */
+ cmd_status |= ((u32)status) << GELIC_NET_DESCR_IND_PROC_SHIFT;
+ /* and write it back */
+ descr->dmac_cmd_status = cmd_status;
+ /*
+ * dma_cmd_status field is used to indicate whether the descriptor
+ * is valid or not.
+ * Usually caller of this function wants to inform that to the
+ * hardware, so we assure here the hardware sees the change.
+ */
+ wmb();
+}
+
+/**
+ * gelic_net_free_chain - free descriptor chain
+ * @card: card structure
+ * @descr_in: address of desc
+ */
+static void gelic_net_free_chain(struct gelic_net_card *card,
+ struct gelic_net_descr *descr_in)
+{
+ struct gelic_net_descr *descr;
+
+ for (descr = descr_in; descr && descr->bus_addr; descr = descr->next) {
+ dma_unmap_single(ctodev(card), descr->bus_addr,
+ GELIC_NET_DESCR_SIZE, DMA_BIDIRECTIONAL);
+ descr->bus_addr = 0;
+ }
+}
+
+/**
+ * gelic_net_init_chain - links descriptor chain
+ * @card: card structure
+ * @chain: address of chain
+ * @start_descr: address of descriptor array
+ * @no: number of descriptors
+ *
+ * we manage a circular list that mirrors the hardware structure,
+ * except that the hardware uses bus addresses.
+ *
+ * returns 0 on success, <0 on failure
+ */
+static int gelic_net_init_chain(struct gelic_net_card *card,
+ struct gelic_net_descr_chain *chain,
+ struct gelic_net_descr *start_descr, int no)
+{
+ int i;
+ struct gelic_net_descr *descr;
+
+ descr = start_descr;
+ memset(descr, 0, sizeof(*descr) * no);
+
+ /* set up the hardware pointers in each descriptor */
+ for (i = 0; i < no; i++, descr++) {
+ gelic_net_set_descr_status(descr, GELIC_NET_DESCR_NOT_IN_USE);
+ descr->bus_addr =
+ dma_map_single(ctodev(card), descr,
+ GELIC_NET_DESCR_SIZE,
+ DMA_BIDIRECTIONAL);
+
+ if (!descr->bus_addr)
+ goto iommu_error;
+
+ descr->next = descr + 1;
+ descr->prev = descr - 1;
+ }
+ /* make them as ring */
+ (descr - 1)->next = start_descr;
+ start_descr->prev = (descr - 1);
+
+ /* chain bus addr of hw descriptor */
+ descr = start_descr;
+ for (i = 0; i < no; i++, descr++) {
+ descr->next_descr_addr = descr->next->bus_addr;
+ }
+
+ chain->head = start_descr;
+ chain->tail = start_descr;
+
+ /* do not chain last hw descriptor */
+ (descr - 1)->next_descr_addr = 0;
+
+ return 0;
+
+iommu_error:
+ for (i--, descr--; 0 <= i; i--, descr--)
+ if (descr->bus_addr)
+ dma_unmap_single(ctodev(card), descr->bus_addr,
+ GELIC_NET_DESCR_SIZE,
+ DMA_BIDIRECTIONAL);
+ return -ENOMEM;
+}
+
+/**
+ * gelic_net_prepare_rx_descr - reinitializes a rx descriptor
+ * @card: card structure
+ * @descr: descriptor to re-init
+ *
+ * return 0 on succes, <0 on failure
+ *
+ * allocates a new rx skb, iommu-maps it and attaches it to the descriptor.
+ * Activate the descriptor state-wise
+ */
+static int gelic_net_prepare_rx_descr(struct gelic_net_card *card,
+ struct gelic_net_descr *descr)
+{
+ int offset;
+ unsigned int bufsize;
+
+ if (gelic_net_get_descr_status(descr) != GELIC_NET_DESCR_NOT_IN_USE) {
+ dev_info(ctodev(card), "%s: ERROR status \n", __func__);
+ }
+ /* we need to round up the buffer size to a multiple of 128 */
+ bufsize = ALIGN(GELIC_NET_MAX_MTU, GELIC_NET_RXBUF_ALIGN);
+
+ /* and we need to have it 128 byte aligned, therefore we allocate a
+ * bit more */
+ descr->skb = netdev_alloc_skb(card->netdev,
+ bufsize + GELIC_NET_RXBUF_ALIGN - 1);
+ if (!descr->skb) {
+ descr->buf_addr = 0; /* tell DMAC don't touch memory */
+ dev_info(ctodev(card),
+ "%s:allocate skb failed !!\n", __func__);
+ return -ENOMEM;
+ }
+ descr->buf_size = bufsize;
+ descr->dmac_cmd_status = 0;
+ descr->result_size = 0;
+ descr->valid_size = 0;
+ descr->data_error = 0;
+
+ offset = ((unsigned long)descr->skb->data) &
+ (GELIC_NET_RXBUF_ALIGN - 1);
+ if (offset)
+ skb_reserve(descr->skb, GELIC_NET_RXBUF_ALIGN - offset);
+ /* io-mmu-map the skb */
+ descr->buf_addr = dma_map_single(ctodev(card), descr->skb->data,
+ GELIC_NET_MAX_MTU,
+ DMA_FROM_DEVICE);
+ if (!descr->buf_addr) {
+ dev_kfree_skb_any(descr->skb);
+ descr->skb = NULL;
+ dev_info(ctodev(card),
+ "%s:Could not iommu-map rx buffer\n", __func__);
+ gelic_net_set_descr_status(descr, GELIC_NET_DESCR_NOT_IN_USE);
+ return -ENOMEM;
+ } else {
+ gelic_net_set_descr_status(descr, GELIC_NET_DESCR_CARDOWNED);
+ return 0;
+ }
+}
+
+/**
+ * gelic_net_release_rx_chain - free all skb of rx descr
+ * @card: card structure
+ *
+ */
+static void gelic_net_release_rx_chain(struct gelic_net_card *card)
+{
+ struct gelic_net_descr *descr = card->rx_chain.head;
+
+ do {
+ if (descr->skb) {
+ dma_unmap_single(ctodev(card),
+ descr->buf_addr,
+ descr->skb->len,
+ DMA_FROM_DEVICE);
+ descr->buf_addr = 0;
+ dev_kfree_skb_any(descr->skb);
+ descr->skb = NULL;
+ descr->dmac_cmd_status = GELIC_NET_DESCR_NOT_IN_USE;
+ }
+ descr = descr->next;
+ } while (descr != card->rx_chain.head);
+}
+
+/**
+ * gelic_net_fill_rx_chain - fills descriptors/skbs in the rx chains
+ * @card: card structure
+ *
+ * fills all descriptors in the rx chain: allocates skbs
+ * and iommu-maps them.
+ * returns 0 on success, <0 on failure
+ */
+static int gelic_net_fill_rx_chain(struct gelic_net_card *card)
+{
+ struct gelic_net_descr *descr = card->rx_chain.head;
+ int ret;
+
+ do {
+ if (!descr->skb) {
+ ret = gelic_net_prepare_rx_descr(card, descr);
+ if (ret)
+ goto rewind;
+ }
+ descr = descr->next;
+ } while (descr != card->rx_chain.head);
+
+ return 0;
+rewind:
+ gelic_net_release_rx_chain(card);
+ return ret;
+}
+
+/**
+ * gelic_net_alloc_rx_skbs - allocates rx skbs in rx descriptor chains
+ * @card: card structure
+ *
+ * returns 0 on success, <0 on failure
+ */
+static int gelic_net_alloc_rx_skbs(struct gelic_net_card *card)
+{
+ struct gelic_net_descr_chain *chain;
+ int ret;
+ chain = &card->rx_chain;
+ ret = gelic_net_fill_rx_chain(card);
+ chain->head = card->rx_top->prev; /* point to the last */
+ return ret;
+}
+
+/**
+ * gelic_net_release_tx_descr - processes a used tx descriptor
+ * @card: card structure
+ * @descr: descriptor to release
+ *
+ * releases a used tx descriptor (unmapping, freeing of skb)
+ */
+static void gelic_net_release_tx_descr(struct gelic_net_card *card,
+ struct gelic_net_descr *descr)
+{
+ struct sk_buff *skb;
+
+
+ if (descr->data_status & (1 << GELIC_NET_TXDESC_TAIL)) {
+ /* 2nd descriptor */
+ skb = descr->skb;
+ dma_unmap_single(ctodev(card), descr->buf_addr, skb->len,
+ DMA_TO_DEVICE);
+ dev_kfree_skb_any(skb);
+ } else {
+ dma_unmap_single(ctodev(card), descr->buf_addr,
+ descr->buf_size, DMA_TO_DEVICE);
+ }
+
+ descr->buf_addr = 0;
+ descr->buf_size = 0;
+ descr->next_descr_addr = 0;
+ descr->result_size = 0;
+ descr->valid_size = 0;
+ descr->data_status = 0;
+ descr->data_error = 0;
+ descr->skb = NULL;
+
+ /* set descr status */
+ descr->dmac_cmd_status = GELIC_NET_DMAC_CMDSTAT_NOT_IN_USE;
+}
+
+/**
+ * gelic_net_release_tx_chain - processes sent tx descriptors
+ * @card: adapter structure
+ * @stop: net_stop sequence
+ *
+ * releases the tx descriptors that gelic has finished with
+ */
+static void gelic_net_release_tx_chain(struct gelic_net_card *card, int stop)
+{
+ struct gelic_net_descr_chain *tx_chain;
+ enum gelic_net_descr_status status;
+ int release = 0;
+
+ for (tx_chain = &card->tx_chain;
+ tx_chain->head != tx_chain->tail && tx_chain->tail;
+ tx_chain->tail = tx_chain->tail->next) {
+ status = gelic_net_get_descr_status(tx_chain->tail);
+ switch (status) {
+ case GELIC_NET_DESCR_RESPONSE_ERROR:
+ case GELIC_NET_DESCR_PROTECTION_ERROR:
+ case GELIC_NET_DESCR_FORCE_END:
+ if (printk_ratelimit())
+ dev_info(ctodev(card),
+ "%s: forcing end of tx descriptor " \
+ "with status %x\n",
+ __func__, status);
+ card->netdev_stats.tx_dropped++;
+ break;
+
+ case GELIC_NET_DESCR_COMPLETE:
+ card->netdev_stats.tx_packets++;
+ card->netdev_stats.tx_bytes +=
+ tx_chain->tail->skb->len;
+ break;
+
+ case GELIC_NET_DESCR_CARDOWNED:
+ /* pending tx request */
+ default:
+ /* any other value (== GELIC_NET_DESCR_NOT_IN_USE) */
+ goto out;
+ }
+ gelic_net_release_tx_descr(card, tx_chain->tail);
+ release = 1;
+ }
+out:
+ if (!stop && release)
+ netif_wake_queue(card->netdev);
+}
+
+/**
+ * gelic_net_set_multi - sets multicast addresses and promisc flags
+ * @netdev: interface device structure
+ *
+ * gelic_net_set_multi configures multicast addresses as needed for the
+ * netdev interface. It also sets up multicast, allmulti and promisc
+ * flags appropriately
+ */
+static void gelic_net_set_multi(struct net_device *netdev)
+{
+ struct gelic_net_card *card = netdev_priv(netdev);
+ struct dev_mc_list *mc;
+ unsigned int i;
+ uint8_t *p;
+ u64 addr;
+ int status;
+
+ /* clear all multicast address */
+ status = lv1_net_remove_multicast_address(bus_id(card), dev_id(card),
+ 0, 1);
+ if (status)
+ dev_err(ctodev(card),
+ "lv1_net_remove_multicast_address failed %d\n",
+ status);
+ /* set broadcast address */
+ status = lv1_net_add_multicast_address(bus_id(card), dev_id(card),
+ GELIC_NET_BROADCAST_ADDR, 0);
+ if (status)
+ dev_err(ctodev(card),
+ "lv1_net_add_multicast_address failed, %d\n",
+ status);
+
+ if (netdev->flags & IFF_ALLMULTI
+ || netdev->mc_count > GELIC_NET_MC_COUNT_MAX) { /* list max */
+ status = lv1_net_add_multicast_address(bus_id(card),
+ dev_id(card),
+ 0, 1);
+ if (status)
+ dev_err(ctodev(card),
+ "lv1_net_add_multicast_address failed, %d\n",
+ status);
+ return;
+ }
+
+ /* set multicast address */
+ for (mc = netdev->mc_list; mc; mc = mc->next) {
+ addr = 0;
+ p = mc->dmi_addr;
+ for (i = 0; i < ETH_ALEN; i++) {
+ addr <<= 8;
+ addr |= *p++;
+ }
+ status = lv1_net_add_multicast_address(bus_id(card),
+ dev_id(card),
+ addr, 0);
+ if (status)
+ dev_err(ctodev(card),
+ "lv1_net_add_multicast_address failed, %d\n",
+ status);
+ }
+}
+
+/**
+ * gelic_net_enable_rxdmac - enables the receive DMA controller
+ * @card: card structure
+ *
+ * gelic_net_enable_rxdmac enables the DMA controller by setting RX_DMA_EN
+ * in the GDADMACCNTR register
+ */
+static inline void gelic_net_enable_rxdmac(struct gelic_net_card *card)
+{
+ int status;
+
+ status = lv1_net_start_rx_dma(bus_id(card), dev_id(card),
+ card->rx_chain.tail->bus_addr, 0);
+ if (status)
+ dev_info(ctodev(card),
+ "lv1_net_start_rx_dma failed, status=%d\n", status);
+}
+
+/**
+ * gelic_net_disable_rxdmac - disables the receive DMA controller
+ * @card: card structure
+ *
+ * gelic_net_disable_rxdmac terminates processing on the DMA controller by
+ * turing off DMA and issueing a force end
+ */
+static inline void gelic_net_disable_rxdmac(struct gelic_net_card *card)
+{
+ int status;
+
+ /* this hvc blocks until the DMA in progress really stopped */
+ status = lv1_net_stop_rx_dma(bus_id(card), dev_id(card), 0);
+ if (status)
+ dev_err(ctodev(card),
+ "lv1_net_stop_rx_dma faild, %d\n", status);
+}
+
+/**
+ * gelic_net_disable_txdmac - disables the transmit DMA controller
+ * @card: card structure
+ *
+ * gelic_net_disable_txdmac terminates processing on the DMA controller by
+ * turing off DMA and issueing a force end
+ */
+static inline void gelic_net_disable_txdmac(struct gelic_net_card *card)
+{
+ int status;
+
+ /* this hvc blocks until the DMA in progress really stopped */
+ status = lv1_net_stop_tx_dma(bus_id(card), dev_id(card), 0);
+ if (status)
+ dev_err(ctodev(card),
+ "lv1_net_stop_tx_dma faild, status=%d\n", status);
+}
+
+/**
+ * gelic_net_stop - called upon ifconfig down
+ * @netdev: interface device structure
+ *
+ * always returns 0
+ */
+static int gelic_net_stop(struct net_device *netdev)
+{
+ struct gelic_net_card *card = netdev_priv(netdev);
+
+ netif_poll_disable(netdev);
+ netif_stop_queue(netdev);
+
+ /* turn off DMA, force end */
+ gelic_net_disable_rxdmac(card);
+ gelic_net_disable_txdmac(card);
+
+ gelic_net_set_irq_mask(card, 0);
+
+ /* disconnect event port */
+ free_irq(card->netdev->irq, card->netdev);
+ ps3_sb_event_receive_port_destroy(card->dev, card->netdev->irq);
+ card->netdev->irq = NO_IRQ;
+
+ netif_carrier_off(netdev);
+
+ /* release chains */
+ gelic_net_release_tx_chain(card, 1);
+ gelic_net_release_rx_chain(card);
+
+ gelic_net_free_chain(card, card->tx_top);
+ gelic_net_free_chain(card, card->rx_top);
+
+ return 0;
+}
+
+/**
+ * gelic_net_get_next_tx_descr - returns the next available tx descriptor
+ * @card: device structure to get descriptor from
+ *
+ * returns the address of the next descriptor, or NULL if not available.
+ */
+static struct gelic_net_descr *
+gelic_net_get_next_tx_descr(struct gelic_net_card *card)
+{
+ if (!card->tx_chain.head)
+ return NULL;
+ /* see if we can two consecutive free descrs */
+ if (card->tx_chain.tail != card->tx_chain.head->next &&
+ gelic_net_get_descr_status(card->tx_chain.head) ==
+ GELIC_NET_DESCR_NOT_IN_USE &&
+ card->tx_chain.tail != card->tx_chain.head->next->next &&
+ gelic_net_get_descr_status(card->tx_chain.head->next) ==
+ GELIC_NET_DESCR_NOT_IN_USE )
+ return card->tx_chain.head;
+ else
+ return NULL;
+
+}
+
+/**
+ * gelic_net_set_txdescr_cmdstat - sets the tx descriptor command field
+ * @descr: descriptor structure to fill out
+ * @skb: packet to consider
+ * @middle: middle of frame
+ *
+ * fills out the command and status field of the descriptor structure,
+ * depending on hardware checksum settings. This function assumes a wmb()
+ * has executed before.
+ */
+static void gelic_net_set_txdescr_cmdstat(struct gelic_net_descr *descr,
+ struct sk_buff *skb, int middle)
+{
+ u32 eofr;
+
+ if (middle)
+ eofr = 0;
+ else
+ eofr = GELIC_NET_DMAC_CMDSTAT_END_FRAME;
+
+ if (skb->ip_summed != CHECKSUM_PARTIAL)
+ descr->dmac_cmd_status = GELIC_NET_DMAC_CMDSTAT_NOCS | eofr;
+ else {
+ /* is packet ip?
+ * if yes: tcp? udp? */
+ if (skb->protocol == htons(ETH_P_IP)) {
+ if (ip_hdr(skb)->protocol == IPPROTO_TCP)
+ descr->dmac_cmd_status =
+ GELIC_NET_DMAC_CMDSTAT_TCPCS | eofr;
+ else if (ip_hdr(skb)->protocol == IPPROTO_UDP)
+ descr->dmac_cmd_status =
+ GELIC_NET_DMAC_CMDSTAT_UDPCS | eofr;
+ else /*
+ * the stack should checksum non-tcp and non-udp
+ * packets on his own: NETIF_F_IP_CSUM
+ */
+ descr->dmac_cmd_status =
+ GELIC_NET_DMAC_CMDSTAT_NOCS | eofr;
+ }
+ }
+}
+
+/**
+ * gelic_net_prepare_tx_descr_v - get dma address of skb_data
+ * @card: card structure
+ * @descr: descriptor structure
+ * @skb: packet to use
+ *
+ * returns 0 on success, <0 on failure.
+ *
+ */
+static int gelic_net_prepare_tx_descr_v(struct gelic_net_card *card,
+ struct gelic_net_descr *descr,
+ struct sk_buff *skb)
+{
+ dma_addr_t buf[2];
+ unsigned int vlan_len;
+
+ if (skb->len < GELIC_NET_VLAN_POS)
+ return -EINVAL;
+
+ memcpy(&descr->vlan, skb->data, GELIC_NET_VLAN_POS);
+ if (card->vlan_index != -1) {
+ descr->vlan.h_vlan_proto = htons(ETH_P_8021Q); /* vlan 0x8100*/
+ descr->vlan.h_vlan_TCI = htons(card->vlan_id[card->vlan_index]);
+ vlan_len = GELIC_NET_VLAN_POS + VLAN_HLEN; /* VLAN_HLEN=4 */
+ } else
+ vlan_len = GELIC_NET_VLAN_POS; /* no vlan tag */
+
+ /* first descr */
+ buf[0] = dma_map_single(ctodev(card), &descr->vlan,
+ vlan_len, DMA_TO_DEVICE);
+
+ if (!buf[0]) {
+ dev_err(ctodev(card),
+ "dma map 1 failed (%p, %i). Dropping packet\n",
+ skb->data, vlan_len);
+ return -ENOMEM;
+ }
+
+ descr->buf_addr = buf[0];
+ descr->buf_size = vlan_len;
+ descr->skb = skb; /* not used */
+ descr->data_status = 0;
+ gelic_net_set_txdescr_cmdstat(descr, skb, 1); /* not the frame end */
+
+ /* second descr */
+ card->tx_chain.head = card->tx_chain.head->next;
+ descr->next_descr_addr = descr->next->bus_addr;
+ descr = descr->next;
+ if (gelic_net_get_descr_status(descr) != GELIC_NET_DESCR_NOT_IN_USE)
+ /* XXX will be removed */
+ dev_err(ctodev(card), "descr is not free!\n");
+
+ buf[1] = dma_map_single(ctodev(card), skb->data + GELIC_NET_VLAN_POS,
+ skb->len - GELIC_NET_VLAN_POS,
+ DMA_TO_DEVICE);
+
+ if (!buf[1]) {
+ dev_err(ctodev(card),
+ "dma map 2 failed (%p, %i). Dropping packet\n",
+ skb->data + GELIC_NET_VLAN_POS,
+ skb->len - GELIC_NET_VLAN_POS);
+ dma_unmap_single(ctodev(card), buf[0], vlan_len,
+ DMA_TO_DEVICE);
+ return -ENOMEM;
+ }
+
+ descr->buf_addr = buf[1];
+ descr->buf_size = skb->len - GELIC_NET_VLAN_POS;
+ descr->skb = skb;
+ descr->data_status = 0;
+ descr->next_descr_addr = 0; /* terminate hw descr */
+ gelic_net_set_txdescr_cmdstat(descr, skb, 0);
+
+ return 0;
+}
+
+/**
+ * gelic_net_kick_txdma - enables TX DMA processing
+ * @card: card structure
+ * @descr: descriptor address to enable TX processing at
+ *
+ */
+static int gelic_net_kick_txdma(struct gelic_net_card *card,
+ struct gelic_net_descr *descr)
+{
+ int status = -ENXIO;
+ int count = 10;
+
+ if (card->tx_dma_progress)
+ return 0;
+
+ if (gelic_net_get_descr_status(descr) == GELIC_NET_DESCR_CARDOWNED) {
+ card->tx_dma_progress = 1;
+ /* sometimes we need retry here */
+ while (count--) {
+ status = lv1_net_start_tx_dma(bus_id(card),
+ dev_id(card),
+ descr->bus_addr, 0);
+ if (!status)
+ break;
+ }
+ if (!count)
+ dev_info(ctodev(card), "lv1_net_start_txdma failed," \
+ "status=%d %#lx\n",
+ status, card->irq_status);
+ }
+ return status;
+}
+
+/**
+ * gelic_net_xmit - transmits a frame over the device
+ * @skb: packet to send out
+ * @netdev: interface device structure
+ *
+ * returns 0 on success, <0 on failure
+ */
+static int gelic_net_xmit(struct sk_buff *skb, struct net_device *netdev)
+{
+ struct gelic_net_card *card = netdev_priv(netdev);
+ struct gelic_net_descr *descr = NULL;
+ int result;
+ unsigned long flags;
+
+ spin_lock_irqsave(&card->tx_dma_lock, flags);
+
+ gelic_net_release_tx_chain(card, 0);
+ if (!skb)
+ goto kick;
+ descr = gelic_net_get_next_tx_descr(card);
+ if (!descr) {
+ netif_stop_queue(netdev);
+ spin_unlock_irqrestore(&card->tx_dma_lock, flags);
+ return NETDEV_TX_BUSY;
+ }
+ result = gelic_net_prepare_tx_descr_v(card, descr, skb);
+
+ if (result)
+ goto error;
+
+ card->tx_chain.head = card->tx_chain.head->next;
+
+ if (descr->prev)
+ descr->prev->next_descr_addr = descr->bus_addr;
+kick:
+ /*
+ * as hardware descriptor is modified in the above lines,
+ * ensure that the hardware sees it
+ */
+ wmb();
+ if (gelic_net_kick_txdma(card, card->tx_chain.tail))
+ goto error;
+
+ netdev->trans_start = jiffies;
+ spin_unlock_irqrestore(&card->tx_dma_lock, flags);
+ return NETDEV_TX_OK;
+
+error:
+ card->netdev_stats.tx_dropped++;
+ spin_unlock_irqrestore(&card->tx_dma_lock, flags);
+ return NETDEV_TX_LOCKED;
+}
+
+/**
+ * gelic_net_pass_skb_up - takes an skb from a descriptor and passes it on
+ * @descr: descriptor to process
+ * @card: card structure
+ *
+ * iommu-unmaps the skb, fills out skb structure and passes the data to the
+ * stack. The descriptor state is not changed.
+ */
+static void gelic_net_pass_skb_up(struct gelic_net_descr *descr,
+ struct gelic_net_card *card)
+{
+ struct sk_buff *skb;
+ struct net_device *netdev;
+ u32 data_status, data_error;
+
+ data_status = descr->data_status;
+ data_error = descr->data_error;
+ netdev = card->netdev;
+ /* unmap skb buffer */
+ skb = descr->skb;
+ dma_unmap_single(ctodev(card), descr->buf_addr, GELIC_NET_MAX_MTU,
+ DMA_FROM_DEVICE);
+
+ skb_put(skb, descr->valid_size? descr->valid_size : descr->result_size);
+ if (!descr->valid_size)
+ dev_info(ctodev(card), "buffer full %x %x %x\n",
+ descr->result_size, descr->buf_size,
+ descr->dmac_cmd_status);
+
+ descr->skb = NULL;
+ /*
+ * the card put 2 bytes vlan tag in front
+ * of the ethernet frame
+ */
+ skb_pull(skb, 2);
+ skb->protocol = eth_type_trans(skb, netdev);
+
+ /* checksum offload */
+ if (card->rx_csum) {
+ if ((data_status & GELIC_NET_DATA_STATUS_CHK_MASK) &&
+ (!(data_error & GELIC_NET_DATA_ERROR_CHK_MASK)))
+ skb->ip_summed = CHECKSUM_UNNECESSARY;
+ else
+ skb->ip_summed = CHECKSUM_NONE;
+ } else
+ skb->ip_summed = CHECKSUM_NONE;
+
+ /* update netdevice statistics */
+ card->netdev_stats.rx_packets++;
+ card->netdev_stats.rx_bytes += skb->len;
+
+ /* pass skb up to stack */
+ netif_receive_skb(skb);
+}
+
+/**
+ * gelic_net_decode_one_descr - processes an rx descriptor
+ * @card: card structure
+ *
+ * returns 1 if a packet has been sent to the stack, otherwise 0
+ *
+ * processes an rx descriptor by iommu-unmapping the data buffer and passing
+ * the packet up to the stack
+ */
+static int gelic_net_decode_one_descr(struct gelic_net_card *card)
+{
+ enum gelic_net_descr_status status;
+ struct gelic_net_descr_chain *chain = &card->rx_chain;
+ struct gelic_net_descr *descr = chain->tail;
+ int dmac_chain_ended;
+
+ status = gelic_net_get_descr_status(descr);
+ /* is this descriptor terminated with next_descr == NULL? */
+ dmac_chain_ended =
+ descr->dmac_cmd_status & GELIC_NET_DMAC_CMDSTAT_RXDCEIS;
+
+ if (status == GELIC_NET_DESCR_CARDOWNED)
+ return 0;
+
+ if (status == GELIC_NET_DESCR_NOT_IN_USE) {
+ dev_dbg(ctodev(card), "dormant descr? %p\n", descr);
+ return 0;
+ }
+
+ if ((status == GELIC_NET_DESCR_RESPONSE_ERROR) ||
+ (status == GELIC_NET_DESCR_PROTECTION_ERROR) ||
+ (status == GELIC_NET_DESCR_FORCE_END)) {
+ dev_info(ctodev(card), "dropping RX descriptor with state %x\n",
+ status);
+ card->netdev_stats.rx_dropped++;
+ goto refill;
+ }
+
+ if ((status != GELIC_NET_DESCR_COMPLETE) &&
+ (status != GELIC_NET_DESCR_FRAME_END)) {
+ dev_dbg(ctodev(card), "RX descriptor with state %x\n",
+ status);
+ goto refill;
+ }
+
+ /* ok, we've got a packet in descr */
+ gelic_net_pass_skb_up(descr, card); /* 1: skb_up sccess */
+
+refill:
+ descr->next_descr_addr = 0; /* unlink the descr */
+
+ /* change the descriptor state: */
+ gelic_net_set_descr_status(descr, GELIC_NET_DESCR_NOT_IN_USE);
+
+ /* refill one desc
+ * FIXME: this can fail, but for now, just leave this
+ * descriptor without skb
+ */
+ gelic_net_prepare_rx_descr(card, descr);
+ chain->head = descr;
+ chain->tail = descr->next;
+ descr->prev->next_descr_addr = descr->bus_addr;
+
+ if (dmac_chain_ended) {
+ gelic_net_enable_rxdmac(card);
+ dev_dbg(ctodev(card), "reenable rx dma\n");
+ }
+
+ return 1;
+}
+
+/**
+ * gelic_net_poll - NAPI poll function called by the stack to return packets
+ * @netdev: interface device structure
+ * @budget: number of packets we can pass to the stack at most
+ *
+ * returns 0 if no more packets available to the driver/stack. Returns 1,
+ * if the quota is exceeded, but the driver has still packets.
+ *
+ */
+static int gelic_net_poll(struct net_device *netdev, int *budget)
+{
+ struct gelic_net_card *card = netdev_priv(netdev);
+ int packets_to_do, packets_done = 0;
+ int no_more_packets = 0;
+
+ packets_to_do = min(*budget, netdev->quota);
+
+ while (packets_to_do) {
+ if (gelic_net_decode_one_descr(card)) {
+ packets_done++;
+ packets_to_do--;
+ } else {
+ /* no more packets for the stack */
+ no_more_packets = 1;
+ break;
+ }
+ }
+ netdev->quota -= packets_done;
+ *budget -= packets_done;
+ if (no_more_packets) {
+ netif_rx_complete(netdev);
+ gelic_net_rx_irq_on(card);
+ return 0;
+ } else
+ return 1;
+}
+
+/**
+ * gelic_net_get_stats - get interface statistics
+ * @netdev: interface device structure
+ *
+ * returns the interface statistics residing in the gelic_net_card struct
+ */
+static struct net_device_stats *gelic_net_get_stats(struct net_device *netdev)
+{
+ struct gelic_net_card *card = netdev_priv(netdev);
+
+ return &card->netdev_stats;
+}
+
+/**
+ * gelic_net_change_mtu - changes the MTU of an interface
+ * @netdev: interface device structure
+ * @new_mtu: new MTU value
+ *
+ * returns 0 on success, <0 on failure
+ */
+static int gelic_net_change_mtu(struct net_device *netdev, int new_mtu)
+{
+ /* no need to re-alloc skbs or so -- the max mtu is about 2.3k
+ * and mtu is outbound only anyway */
+ if ((new_mtu < GELIC_NET_MIN_MTU) ||
+ (new_mtu > GELIC_NET_MAX_MTU)) {
+ return -EINVAL;
+ }
+ netdev->mtu = new_mtu;
+ return 0;
+}
+
+/**
+ * gelic_net_interrupt - event handler for gelic_net
+ */
+static irqreturn_t gelic_net_interrupt(int irq, void *ptr)
+{
+ unsigned long flags;
+ struct net_device *netdev = ptr;
+ struct gelic_net_card *card = netdev_priv(netdev);
+ u64 status;
+
+ status = card->irq_status;
+
+ if (!status)
+ return IRQ_NONE;
+
+ if (status & GELIC_NET_RXINT) {
+ gelic_net_rx_irq_off(card);
+ netif_rx_schedule(netdev);
+ }
+
+ if (status & GELIC_NET_TXINT) {
+ spin_lock_irqsave(&card->tx_dma_lock, flags);
+ card->tx_dma_progress = 0;
+ spin_unlock_irqrestore(&card->tx_dma_lock, flags);
+ /* start pending DMA */
+ gelic_net_xmit(NULL, netdev);
+ }
+ return IRQ_HANDLED;
+}
+
+#ifdef CONFIG_NET_POLL_CONTROLLER
+/**
+ * gelic_net_poll_controller - artificial interrupt for netconsole etc.
+ * @netdev: interface device structure
+ *
+ * see Documentation/networking/netconsole.txt
+ */
+static void gelic_net_poll_controller(struct net_device *netdev)
+{
+ struct gelic_net_card *card = netdev_priv(netdev);
+
+ gelic_net_set_irq_mask(card, 0);
+ gelic_net_interrupt(netdev->irq, netdev);
+ gelic_net_set_irq_mask(card, card->ghiintmask);
+}
+#endif /* CONFIG_NET_POLL_CONTROLLER */
+
+/**
+ * gelic_net_open_device - open device and map dma region
+ * @card: card structure
+ */
+static int gelic_net_open_device(struct gelic_net_card *card)
+{
+ int result;
+
+ result = ps3_sb_event_receive_port_setup(card->dev, PS3_BINDING_CPU_ANY,
+ &card->netdev->irq);
+
+ if (result) {
+ dev_info(ctodev(card),
+ "%s:%d: gelic_net_open_device failed (%d)\n",
+ __func__, __LINE__, result);
+ result = -EPERM;
+ goto fail_alloc_irq;
+ }
+
+ result = request_irq(card->netdev->irq, gelic_net_interrupt,
+ IRQF_DISABLED, "gelic network", card->netdev);
+
+ if (result) {
+ dev_info(ctodev(card), "%s:%d: request_irq failed (%d)\n",
+ __func__, __LINE__, result);
+ goto fail_request_irq;
+ }
+
+ return 0;
+
+fail_request_irq:
+ ps3_sb_event_receive_port_destroy(card->dev, card->netdev->irq);
+ card->netdev->irq = NO_IRQ;
+fail_alloc_irq:
+ return result;
+}
+
+
+/**
+ * gelic_net_open - called upon ifonfig up
+ * @netdev: interface device structure
+ *
+ * returns 0 on success, <0 on failure
+ *
+ * gelic_net_open allocates all the descriptors and memory needed for
+ * operation, sets up multicast list and enables interrupts
+ */
+static int gelic_net_open(struct net_device *netdev)
+{
+ struct gelic_net_card *card = netdev_priv(netdev);
+
+ dev_dbg(ctodev(card), " -> %s:%d\n", __func__, __LINE__);
+
+ gelic_net_open_device(card);
+
+ if (gelic_net_init_chain(card, &card->tx_chain,
+ card->descr, GELIC_NET_TX_DESCRIPTORS))
+ goto alloc_tx_failed;
+ if (gelic_net_init_chain(card, &card->rx_chain,
+ card->descr + GELIC_NET_RX_DESCRIPTORS,
+ GELIC_NET_RX_DESCRIPTORS))
+ goto alloc_rx_failed;
+
+ /* head of chain */
+ card->tx_top = card->tx_chain.head;
+ card->rx_top = card->rx_chain.head;
+ dev_dbg(ctodev(card), "descr rx %p, tx %p, size %#lx, num %#x\n",
+ card->rx_top, card->tx_top, sizeof(struct gelic_net_descr),
+ GELIC_NET_RX_DESCRIPTORS);
+ /* allocate rx skbs */
+ if (gelic_net_alloc_rx_skbs(card))
+ goto alloc_skbs_failed;
+
+ card->tx_dma_progress = 0;
+ card->ghiintmask = GELIC_NET_RXINT | GELIC_NET_TXINT;
+
+ gelic_net_set_irq_mask(card, card->ghiintmask);
+ gelic_net_enable_rxdmac(card);
+
+ netif_start_queue(netdev);
+ netif_carrier_on(netdev);
+ netif_poll_enable(netdev);
+
+ return 0;
+
+alloc_skbs_failed:
+ gelic_net_free_chain(card, card->rx_top);
+alloc_rx_failed:
+ gelic_net_free_chain(card, card->tx_top);
+alloc_tx_failed:
+ return -ENOMEM;
+}
+
+#ifdef GELIC_NET_ETHTOOL
+static void gelic_net_get_drvinfo (struct net_device *netdev,
+ struct ethtool_drvinfo *info)
+{
+ strncpy(info->driver, DRV_NAME, sizeof(info->driver) - 1);
+ strncpy(info->version, DRV_VERSION, sizeof(info->version) - 1);
+}
+
+static int gelic_net_get_settings(struct net_device *netdev,
+ struct ethtool_cmd *cmd)
+{
+ struct gelic_net_card *card = netdev_priv(netdev);
+ int status;
+ u64 v1, v2;
+ int speed, duplex;
+
+ speed = duplex = -1;
+ status = lv1_net_control(bus_id(card), dev_id(card),
+ GELIC_NET_GET_ETH_PORT_STATUS, GELIC_NET_PORT, 0, 0,
+ &v1, &v2);
+ if (status) {
+ /* link down */
+ } else {
+ if (v1 & GELIC_NET_FULL_DUPLEX) {
+ duplex = DUPLEX_FULL;
+ } else {
+ duplex = DUPLEX_HALF;
+ }
+
+ if (v1 & GELIC_NET_SPEED_10 ) {
+ speed = SPEED_10;
+ } else if (v1 & GELIC_NET_SPEED_100) {
+ speed = SPEED_100;
+ } else if (v1 & GELIC_NET_SPEED_1000) {
+ speed = SPEED_1000;
+ }
+ }
+ cmd->supported = SUPPORTED_TP | SUPPORTED_Autoneg |
+ SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full |
+ SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full |
+ SUPPORTED_1000baseT_Half | SUPPORTED_1000baseT_Full;
+ cmd->advertising = cmd->supported;
+ cmd->speed = speed;
+ cmd->duplex = duplex;
+ cmd->autoneg = AUTONEG_ENABLE; /* always enabled */
+ cmd->port = PORT_TP;
+
+ return 0;
+}
+
+static u32 gelic_net_get_link(struct net_device *netdev)
+{
+ struct gelic_net_card *card = netdev_priv(netdev);
+ int status;
+ u64 v1, v2;
+ int link;
+
+ status = lv1_net_control(bus_id(card), dev_id(card),
+ GELIC_NET_GET_ETH_PORT_STATUS, GELIC_NET_PORT, 0, 0,
+ &v1, &v2);
+ if (status)
+ return 0; /* link down */
+
+ if (v1 & GELIC_NET_LINK_UP)
+ link = 1;
+ else
+ link = 0;
+
+ return link;
+}
+
+static int gelic_net_nway_reset(struct net_device *netdev)
+{
+ if (netif_running(netdev)) {
+ gelic_net_stop(netdev);
+ gelic_net_open(netdev);
+ }
+ return 0;
+}
+
+static u32 gelic_net_get_tx_csum(struct net_device *netdev)
+{
+ return (netdev->features & NETIF_F_IP_CSUM) != 0;
+}
+
+static int gelic_net_set_tx_csum(struct net_device *netdev, u32 data)
+{
+ if (data)
+ netdev->features |= NETIF_F_IP_CSUM;
+ else
+ netdev->features &= ~NETIF_F_IP_CSUM;
+
+ return 0;
+}
+
+static u32 gelic_net_get_rx_csum(struct net_device *netdev)
+{
+ struct gelic_net_card *card = netdev_priv(netdev);
+
+ return card->rx_csum;
+}
+
+static int gelic_net_set_rx_csum(struct net_device *netdev, u32 data)
+{
+ struct gelic_net_card *card = netdev_priv(netdev);
+
+ card->rx_csum = data;
+ return 0;
+}
+
+static struct ethtool_ops gelic_net_ethtool_ops = {
+ .get_drvinfo = gelic_net_get_drvinfo,
+ .get_settings = gelic_net_get_settings,
+ .get_link = gelic_net_get_link,
+ .nway_reset = gelic_net_nway_reset,
+ .get_tx_csum = gelic_net_get_tx_csum,
+ .set_tx_csum = gelic_net_set_tx_csum,
+ .get_rx_csum = gelic_net_get_rx_csum,
+ .set_rx_csum = gelic_net_set_rx_csum,
+};
+#endif
+
+/**
+ * gelic_net_tx_timeout_task - task scheduled by the watchdog timeout
+ * function (to be called not under interrupt status)
+ * @work: work is context of tx timout task
+ *
+ * called as task when tx hangs, resets interface (if interface is up)
+ */
+static void gelic_net_tx_timeout_task(struct work_struct *work)
+{
+ struct gelic_net_card *card =
+ container_of(work, struct gelic_net_card, tx_timeout_task);
+ struct net_device *netdev = card->netdev;
+
+ dev_info(ctodev(card), "%s:Timed out. Restarting... \n", __func__);
+
+ if (!(netdev->flags & IFF_UP))
+ goto out;
+
+ netif_device_detach(netdev);
+ gelic_net_stop(netdev);
+
+ gelic_net_open(netdev);
+ netif_device_attach(netdev);
+
+out:
+ atomic_dec(&card->tx_timeout_task_counter);
+}
+
+/**
+ * gelic_net_tx_timeout - called when the tx timeout watchdog kicks in.
+ * @netdev: interface device structure
+ *
+ * called, if tx hangs. Schedules a task that resets the interface
+ */
+static void gelic_net_tx_timeout(struct net_device *netdev)
+{
+ struct gelic_net_card *card;
+
+ card = netdev_priv(netdev);
+ atomic_inc(&card->tx_timeout_task_counter);
+ if (netdev->flags & IFF_UP)
+ schedule_work(&card->tx_timeout_task);
+ else
+ atomic_dec(&card->tx_timeout_task_counter);
+}
+
+/**
+ * gelic_net_setup_netdev_ops - initialization of net_device operations
+ * @netdev: net_device structure
+ *
+ * fills out function pointers in the net_device structure
+ */
+static void gelic_net_setup_netdev_ops(struct net_device *netdev)
+{
+ netdev->open = &gelic_net_open;
+ netdev->stop = &gelic_net_stop;
+ netdev->hard_start_xmit = &gelic_net_xmit;
+ netdev->get_stats = &gelic_net_get_stats;
+ netdev->set_multicast_list = &gelic_net_set_multi;
+ netdev->change_mtu = &gelic_net_change_mtu;
+ /* tx watchdog */
+ netdev->tx_timeout = &gelic_net_tx_timeout;
+ netdev->watchdog_timeo = GELIC_NET_WATCHDOG_TIMEOUT;
+ /* NAPI */
+ netdev->poll = &gelic_net_poll;
+ netdev->weight = GELIC_NET_NAPI_WEIGHT;
+#ifdef GELIC_NET_ETHTOOL
+ netdev->ethtool_ops = &gelic_net_ethtool_ops;
+#endif
+}
+
+/**
+ * gelic_net_setup_netdev - initialization of net_device
+ * @card: card structure
+ *
+ * Returns 0 on success or <0 on failure
+ *
+ * gelic_net_setup_netdev initializes the net_device structure
+ **/
+static int gelic_net_setup_netdev(struct gelic_net_card *card)
+{
+ struct net_device *netdev = card->netdev;
+ struct sockaddr addr;
+ unsigned int i;
+ int status;
+ u64 v1, v2;
+
+ SET_MODULE_OWNER(netdev);
+ SET_NETDEV_DEV(netdev, &card->dev->core);
+ spin_lock_init(&card->tx_dma_lock);
+
+ card->rx_csum = GELIC_NET_RX_CSUM_DEFAULT;
+
+ gelic_net_setup_netdev_ops(netdev);
+
+ netdev->features = NETIF_F_IP_CSUM;
+
+ status = lv1_net_control(bus_id(card), dev_id(card),
+ GELIC_NET_GET_MAC_ADDRESS,
+ 0, 0, 0, &v1, &v2);
+ if (status || !is_valid_ether_addr((u8 *)&v1)) {
+ dev_info(ctodev(card),
+ "%s:lv1_net_control GET_MAC_ADDR failed %d\n",
+ __func__, status);
+ return -EINVAL;
+ }
+ v1 <<= 16;
+ memcpy(addr.sa_data, &v1, ETH_ALEN);
+ memcpy(netdev->dev_addr, addr.sa_data, ETH_ALEN);
+ dev_info(ctodev(card), "MAC addr %02x:%02x:%02x:%02x:%02x:%02x\n",
+ netdev->dev_addr[0], netdev->dev_addr[1],
+ netdev->dev_addr[2], netdev->dev_addr[3],
+ netdev->dev_addr[4], netdev->dev_addr[5]);
+
+ card->vlan_index = -1; /* no vlan */
+ for (i = 0; i < GELIC_NET_VLAN_MAX; i++) {
+ status = lv1_net_control(bus_id(card), dev_id(card),
+ GELIC_NET_GET_VLAN_ID,
+ i + 1, /* index; one based */
+ 0, 0, &v1, &v2);
+ if (status == GELIC_NET_VLAN_NO_ENTRY) {
+ dev_dbg(ctodev(card),
+ "GELIC_VLAN_ID no entry:%d, VLAN disabled\n",
+ status);
+ card->vlan_id[i] = 0;
+ } else if (status) {
+ dev_dbg(ctodev(card),
+ "%s:GELIC_NET_VLAN_ID faild, status=%d\n",
+ __func__, status);
+ card->vlan_id[i] = 0;
+ } else {
+ card->vlan_id[i] = (u32)v1;
+ dev_dbg(ctodev(card), "vlan_id:%d, %lx\n", i, v1);
+ }
+ }
+ if (card->vlan_id[GELIC_NET_VLAN_WIRED - 1])
+ card->vlan_index = GELIC_NET_VLAN_WIRED - 1;
+
+ status = register_netdev(netdev);
+ if (status) {
+ dev_err(ctodev(card), "%s:Couldn't register net_device: %d\n",
+ __func__, status);
+ return status;
+ }
+
+ return 0;
+}
+
+/**
+ * gelic_net_alloc_card - allocates net_device and card structure
+ *
+ * returns the card structure or NULL in case of errors
+ *
+ * the card and net_device structures are linked to each other
+ */
+static struct gelic_net_card *gelic_net_alloc_card(void)
+{
+ struct net_device *netdev;
+ struct gelic_net_card *card;
+ size_t alloc_size;
+
+ alloc_size = sizeof (*card) +
+ sizeof (struct gelic_net_descr) * GELIC_NET_RX_DESCRIPTORS +
+ sizeof (struct gelic_net_descr) * GELIC_NET_TX_DESCRIPTORS;
+ /*
+ * we assume private data is allocated 32 bytes (or more) aligned
+ * so that gelic_net_descr should be 32 bytes aligned.
+ * Current alloc_etherdev() does do it because NETDEV_ALIGN
+ * is 32.
+ * check this assumption here.
+ */
+ BUILD_BUG_ON(NETDEV_ALIGN < 32);
+ BUILD_BUG_ON(offsetof(struct gelic_net_card, irq_status) % 8);
+ BUILD_BUG_ON(offsetof(struct gelic_net_card, descr) % 32);
+
+ netdev = alloc_etherdev(alloc_size);
+ if (!netdev)
+ return NULL;
+
+ card = netdev_priv(netdev);
+ card->netdev = netdev;
+ INIT_WORK(&card->tx_timeout_task, gelic_net_tx_timeout_task);
+ init_waitqueue_head(&card->waitq);
+ atomic_set(&card->tx_timeout_task_counter, 0);
+
+ return card;
+}
+
+/**
+ * ps3_gelic_driver_probe - add a device to the control of this driver
+ */
+static int ps3_gelic_driver_probe (struct ps3_system_bus_device *dev)
+{
+ struct gelic_net_card *card = gelic_net_alloc_card();
+ int result;
+
+ if (!card) {
+ dev_info(&dev->core, "gelic_net_alloc_card failed\n");
+ result = -ENOMEM;
+ goto fail_alloc_card;
+ }
+
+ ps3_system_bus_set_driver_data(dev, card);
+ card->dev = dev;
+
+ result = ps3_open_hv_device(dev);
+
+ if (result) {
+ dev_dbg(&dev->core, "ps3_open_hv_device failed\n");
+ goto fail_open;
+ }
+
+ result = ps3_dma_region_create(dev->d_region);
+
+ if (result) {
+ dev_dbg(&dev->core, "ps3_dma_region_create failed(%d)\n",
+ result);
+ BUG_ON("check region type");
+ goto fail_dma_region;
+ }
+
+ result = lv1_net_set_interrupt_status_indicator(bus_id(card),
+ dev_id(card),
+ ps3_mm_phys_to_lpar(__pa(&card->irq_status)),
+ 0);
+
+ if (result) {
+ dev_dbg(&dev->core,
+ "lv1_net_set_interrupt_status_indicator failed: %s\n",
+ ps3_result(result));
+ result = -EIO;
+ goto fail_status_indicator;
+ }
+
+ result = gelic_net_setup_netdev(card);
+
+ if (result) {
+ dev_dbg(&dev->core, "%s:%d: ps3_dma_region_create failed: "
+ "(%d)\n", __func__, __LINE__, result);
+ goto fail_setup_netdev;
+ }
+
+ return 0;
+
+fail_setup_netdev:
+ lv1_net_set_interrupt_status_indicator(bus_id(card),
+ bus_id(card),
+ 0 , 0);
+fail_status_indicator:
+ ps3_dma_region_free(dev->d_region);
+fail_dma_region:
+ ps3_close_hv_device(dev);
+fail_open:
+ ps3_system_bus_set_driver_data(dev, NULL);
+ free_netdev(card->netdev);
+fail_alloc_card:
+ return result;
+}
+
+/**
+ * ps3_gelic_driver_remove - remove a device from the control of this driver
+ */
+
+static int ps3_gelic_driver_remove (struct ps3_system_bus_device *dev)
+{
+ struct gelic_net_card *card = ps3_system_bus_get_driver_data(dev);
+
+ wait_event(card->waitq,
+ atomic_read(&card->tx_timeout_task_counter) == 0);
+
+ lv1_net_set_interrupt_status_indicator(bus_id(card), dev_id(card),
+ 0 , 0);
+
+ unregister_netdev(card->netdev);
+ free_netdev(card->netdev);
+
+ ps3_system_bus_set_driver_data(dev, NULL);
+
+ ps3_dma_region_free(dev->d_region);
+
+ ps3_close_hv_device(dev);
+
+ return 0;
+}
+
+static struct ps3_system_bus_driver ps3_gelic_driver = {
+ .match_id = PS3_MATCH_ID_GELIC,
+ .probe = ps3_gelic_driver_probe,
+ .remove = ps3_gelic_driver_remove,
+ .shutdown = ps3_gelic_driver_remove,
+ .core.name = "ps3_gelic_driver",
+ .core.owner = THIS_MODULE,
+};
+
+static int __init ps3_gelic_driver_init (void)
+{
+ return firmware_has_feature(FW_FEATURE_PS3_LV1)
+ ? ps3_system_bus_driver_register(&ps3_gelic_driver)
+ : -ENODEV;
+}
+
+static void __exit ps3_gelic_driver_exit (void)
+{
+ ps3_system_bus_driver_unregister(&ps3_gelic_driver);
+}
+
+module_init (ps3_gelic_driver_init);
+module_exit (ps3_gelic_driver_exit);
+
+MODULE_ALIAS(PS3_MODULE_ALIAS_GELIC);
+
--- /dev/null
+++ b/drivers/net/gelic_net.h
@@ -0,0 +1,241 @@
+/*
+ * PS3 Platfom gelic network driver.
+ *
+ * Copyright (C) 2007 Sony Computer Entertainment Inc.
+ * Copyright 2007 Sony Corporation.
+ *
+ * this file is based on: spider_net.h
+ *
+ * Network device driver for Cell Processor-Based Blade
+ *
+ * (C) Copyright IBM Corp. 2005
+ *
+ * Authors : Utz Bacher <utz.bacher@...ibm.com>
+ * Jens Osterkamp <Jens.Osterkamp@...ibm.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+#ifndef _GELIC_NET_H
+#define _GELIC_NET_H
+
+#define GELIC_NET_DRV_NAME "Gelic Network Driver"
+#define GELIC_NET_DRV_VERSION "1.0"
+
+#define GELIC_NET_ETHTOOL /* use ethtool */
+
+/* ioctl */
+#define GELIC_NET_GET_MODE (SIOCDEVPRIVATE + 0)
+#define GELIC_NET_SET_MODE (SIOCDEVPRIVATE + 1)
+
+/* descriptors */
+#define GELIC_NET_RX_DESCRIPTORS 128 /* num of descriptors */
+#define GELIC_NET_TX_DESCRIPTORS 128 /* num of descriptors */
+
+#define GELIC_NET_MAX_MTU 2308
+#define GELIC_NET_MIN_MTU 64
+#define GELIC_NET_RXBUF_ALIGN 128
+#define GELIC_NET_RX_CSUM_DEFAULT 1 /* hw chksum */
+#define GELIC_NET_WATCHDOG_TIMEOUT 5*HZ
+#define GELIC_NET_NAPI_WEIGHT (GELIC_NET_RX_DESCRIPTORS)
+#define GELIC_NET_BROADCAST_ADDR 0xffffffffffffL
+#define GELIC_NET_VLAN_POS (VLAN_ETH_ALEN * 2)
+#define GELIC_NET_VLAN_MAX 4
+#define GELIC_NET_MC_COUNT_MAX 32 /* multicast address list */
+
+enum gelic_net_int0_status {
+ GELIC_NET_GDTDCEINT = 24,
+ GELIC_NET_GRFANMINT = 28,
+};
+
+/* GHIINT1STS bits */
+enum gelic_net_int1_status {
+ GELIC_NET_GDADCEINT = 14,
+};
+
+/* interrupt mask */
+#define GELIC_NET_TXINT (1L << (GELIC_NET_GDTDCEINT + 32))
+
+#define GELIC_NET_RXINT0 (1L << (GELIC_NET_GRFANMINT + 32))
+#define GELIC_NET_RXINT1 (1L << GELIC_NET_GDADCEINT)
+#define GELIC_NET_RXINT (GELIC_NET_RXINT0 | GELIC_NET_RXINT1)
+
+ /* RX descriptor data_status bits */
+#define GELIC_NET_RXDMADU 0x80000000 /* destination MAC addr unknown */
+#define GELIC_NET_RXLSTFBF 0x40000000 /* last frame buffer */
+#define GELIC_NET_RXIPCHK 0x20000000 /* IP checksum performed */
+#define GELIC_NET_RXTCPCHK 0x10000000 /* TCP/UDP checksup performed */
+#define GELIC_NET_RXIPSPKT 0x08000000 /* IPsec packet */
+#define GELIC_NET_RXIPSAHPRT 0x04000000 /* IPsec AH protocol performed */
+#define GELIC_NET_RXIPSESPPRT 0x02000000 /* IPsec ESP protocol performed */
+#define GELIC_NET_RXSESPAH 0x01000000 /*
+ * IPsec ESP protocol auth
+ * performed
+ */
+
+#define GELIC_NET_RXWTPKT 0x00C00000 /*
+ * wakeup trigger packet
+ * 01: Magic Packet (TM)
+ * 10: ARP packet
+ * 11: Multicast MAC addr
+ */
+#define GELIC_NET_RXVLNPKT 0x00200000 /* VLAN packet */
+/* bit 20..16 reserved */
+#define GELIC_NET_RXRECNUM 0x0000ff00 /* reception receipt number */
+/* bit 7..0 reserved */
+
+#define GELIC_NET_TXDESC_TAIL 0
+#define GELIC_NET_DATA_STATUS_CHK_MASK (GELIC_NET_RXIPCHK | GELIC_NET_RXTCPCHK)
+
+/* RX descriptor data_error bits */
+/* bit 31 reserved */
+#define GELIC_NET_RXALNERR 0x40000000 /* alignement error 10/100M */
+#define GELIC_NET_RXOVERERR 0x20000000 /* oversize error */
+#define GELIC_NET_RXRNTERR 0x10000000 /* Runt error */
+#define GELIC_NET_RXIPCHKERR 0x08000000 /* IP checksum error */
+#define GELIC_NET_RXTCPCHKERR 0x04000000 /* TCP/UDP checksum error */
+#define GELIC_NET_RXUMCHSP 0x02000000 /* unmatched sp on sp */
+#define GELIC_NET_RXUMCHSPI 0x01000000 /* unmatched SPI on SAD */
+#define GELIC_NET_RXUMCHSAD 0x00800000 /* unmatched SAD */
+#define GELIC_NET_RXIPSAHERR 0x00400000 /* auth error on AH protocol
+ * processing */
+#define GELIC_NET_RXIPSESPAHERR 0x00200000 /* auth error on ESP protocol
+ * processing */
+#define GELIC_NET_RXDRPPKT 0x00100000 /* drop packet */
+#define GELIC_NET_RXIPFMTERR 0x00080000 /* IP packet format error */
+/* bit 18 reserved */
+#define GELIC_NET_RXDATAERR 0x00020000 /* IP packet format error */
+#define GELIC_NET_RXCALERR 0x00010000 /* cariier extension length
+ * error */
+#define GELIC_NET_RXCREXERR 0x00008000 /* carrier extention error */
+#define GELIC_NET_RXMLTCST 0x00004000 /* multicast address frame */
+/* bit 13..0 reserved */
+#define GELIC_NET_DATA_ERROR_CHK_MASK \
+ (GELIC_NET_RXIPCHKERR | GELIC_NET_RXTCPCHKERR)
+
+
+/* tx descriptor command and status */
+#define GELIC_NET_DMAC_CMDSTAT_NOCS 0xa0080000 /* middle of frame */
+#define GELIC_NET_DMAC_CMDSTAT_TCPCS 0xa00a0000
+#define GELIC_NET_DMAC_CMDSTAT_UDPCS 0xa00b0000
+#define GELIC_NET_DMAC_CMDSTAT_END_FRAME 0x00040000 /* end of frame */
+
+#define GELIC_NET_DMAC_CMDSTAT_RXDCEIS 0x00000002 /* descriptor chain end
+ * interrupt status */
+
+#define GELIC_NET_DMAC_CMDSTAT_CHAIN_END 0x00000002 /* RXDCEIS:DMA stopped */
+#define GELIC_NET_DMAC_CMDSTAT_NOT_IN_USE 0xb0000000
+#define GELIC_NET_DESCR_IND_PROC_SHIFT 28
+#define GELIC_NET_DESCR_IND_PROC_MASKO 0x0fffffff
+
+
+enum gelic_net_descr_status {
+ GELIC_NET_DESCR_COMPLETE = 0x00, /* used in rx and tx */
+ GELIC_NET_DESCR_RESPONSE_ERROR = 0x01, /* used in rx and tx */
+ GELIC_NET_DESCR_PROTECTION_ERROR = 0x02, /* used in rx and tx */
+ GELIC_NET_DESCR_FRAME_END = 0x04, /* used in rx */
+ GELIC_NET_DESCR_FORCE_END = 0x05, /* used in rx and tx */
+ GELIC_NET_DESCR_CARDOWNED = 0x0a, /* used in rx and tx */
+ GELIC_NET_DESCR_NOT_IN_USE /* any other value */
+};
+/* for lv1_net_control */
+#define GELIC_NET_GET_MAC_ADDRESS 0x0000000000000001
+#define GELIC_NET_GET_ETH_PORT_STATUS 0x0000000000000002
+#define GELIC_NET_SET_NEGOTIATION_MODE 0x0000000000000003
+#define GELIC_NET_GET_VLAN_ID 0x0000000000000004
+
+#define GELIC_NET_LINK_UP 0x0000000000000001
+#define GELIC_NET_FULL_DUPLEX 0x0000000000000002
+#define GELIC_NET_AUTO_NEG 0x0000000000000004
+#define GELIC_NET_SPEED_10 0x0000000000000010
+#define GELIC_NET_SPEED_100 0x0000000000000020
+#define GELIC_NET_SPEED_1000 0x0000000000000040
+
+#define GELIC_NET_VLAN_ALL 0x0000000000000001
+#define GELIC_NET_VLAN_WIRED 0x0000000000000002
+#define GELIC_NET_VLAN_WIRELESS 0x0000000000000003
+#define GELIC_NET_VLAN_PSP 0x0000000000000004
+#define GELIC_NET_VLAN_PORT0 0x0000000000000010
+#define GELIC_NET_VLAN_PORT1 0x0000000000000011
+#define GELIC_NET_VLAN_PORT2 0x0000000000000012
+#define GELIC_NET_VLAN_DAEMON_CLIENT_BSS 0x0000000000000013
+#define GELIC_NET_VLAN_LIBERO_CLIENT_BSS 0x0000000000000014
+#define GELIC_NET_VLAN_NO_ENTRY -6
+
+#define GELIC_NET_PORT 2 /* for port status */
+
+/* size of hardware part of gelic descriptor */
+#define GELIC_NET_DESCR_SIZE (32)
+struct gelic_net_descr {
+ /* as defined by the hardware */
+ u32 buf_addr;
+ u32 buf_size;
+ u32 next_descr_addr;
+ u32 dmac_cmd_status;
+ u32 result_size;
+ u32 valid_size; /* all zeroes for tx */
+ u32 data_status;
+ u32 data_error; /* all zeroes for tx */
+
+ /* used in the driver */
+ struct sk_buff *skb;
+ dma_addr_t bus_addr;
+ struct gelic_net_descr *next;
+ struct gelic_net_descr *prev;
+ struct vlan_ethhdr vlan;
+} __attribute__((aligned(32)));
+
+struct gelic_net_descr_chain {
+ /* we walk from tail to head */
+ struct gelic_net_descr *head;
+ struct gelic_net_descr *tail;
+};
+
+struct gelic_net_card {
+ struct net_device *netdev;
+ /*
+ * hypervisor requires irq_status should be
+ * 8 bytes aligned, but u64 member is
+ * always disposed in that manner
+ */
+ u64 irq_status;
+ u64 ghiintmask;
+
+ struct ps3_system_bus_device *dev;
+ u32 vlan_id[GELIC_NET_VLAN_MAX];
+ int vlan_index;
+
+ struct gelic_net_descr_chain tx_chain;
+ struct gelic_net_descr_chain rx_chain;
+ /* gurad dmac descriptor chain*/
+ spinlock_t chain_lock;
+
+ struct net_device_stats netdev_stats;
+ int rx_csum;
+ /* guard tx_dma_progress */
+ spinlock_t tx_dma_lock;
+ int tx_dma_progress;
+
+ struct work_struct tx_timeout_task;
+ atomic_t tx_timeout_task_counter;
+ wait_queue_head_t waitq;
+
+ struct gelic_net_descr *tx_top, *rx_top;
+ struct gelic_net_descr descr[0];
+};
+
+
+extern unsigned long p_to_lp(long pa);
+
+#endif /* _GELIC_NET_H */
--
Masakazu MOKUNO
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