[RFC PATCH 17/20] net: spider_net: Remove powerpc Cell driver
Michael Ellerman
mpe at ellerman.id.au
Thu Nov 14 23:51:06 AEDT 2024
This driver can no longer be built since support for IBM Cell Blades was
removed, in particular PPC_IBM_CELL_BLADE.
Remove the driver and the documentation.
Remove the MAINTAINERS entry, and add Ishizaki and Geoff to CREDITS.
Signed-off-by: Michael Ellerman <mpe at ellerman.id.au>
---
CREDITS | 8 +
.../device_drivers/ethernet/index.rst | 1 -
.../ethernet/toshiba/spider_net.rst | 202 --
MAINTAINERS | 9 -
drivers/net/ethernet/toshiba/Kconfig | 9 -
drivers/net/ethernet/toshiba/Makefile | 2 -
drivers/net/ethernet/toshiba/spider_net.c | 2556 -----------------
drivers/net/ethernet/toshiba/spider_net.h | 475 ---
.../net/ethernet/toshiba/spider_net_ethtool.c | 174 --
9 files changed, 8 insertions(+), 3428 deletions(-)
delete mode 100644 Documentation/networking/device_drivers/ethernet/toshiba/spider_net.rst
delete mode 100644 drivers/net/ethernet/toshiba/spider_net.c
delete mode 100644 drivers/net/ethernet/toshiba/spider_net.h
delete mode 100644 drivers/net/ethernet/toshiba/spider_net_ethtool.c
diff --git a/CREDITS b/CREDITS
index 0140e0a53ef8..3baf774b8b0d 100644
--- a/CREDITS
+++ b/CREDITS
@@ -2175,6 +2175,10 @@ D: Various ACPI fixes, keeping correct battery state through suspend
D: various lockdep annotations, autofs and other random bugfixes
S: Prague, Czech Republic
+N: Ishizaki Kou
+E: kou.ishizaki at toshiba.co.jp
+D: Spidernet driver for PowerPC Cell platforms
+
N: Gene Kozin
E: 74604.152 at compuserve.com
W: https://www.sangoma.com
@@ -2380,6 +2384,10 @@ S: ICP vortex GmbH
S: Neckarsulm
S: Germany
+N: Geoff Levand
+E: geoff at infradead.org
+D: Spidernet driver for PowerPC Cell platforms
+
N: Phil Lewis
E: beans at bucket.ualr.edu
D: Promised to send money if I would put his name in the source tree.
diff --git a/Documentation/networking/device_drivers/ethernet/index.rst b/Documentation/networking/device_drivers/ethernet/index.rst
index 6fc1961492b7..05d822b904b4 100644
--- a/Documentation/networking/device_drivers/ethernet/index.rst
+++ b/Documentation/networking/device_drivers/ethernet/index.rst
@@ -55,7 +55,6 @@ Contents:
ti/cpsw_switchdev
ti/am65_nuss_cpsw_switchdev
ti/tlan
- toshiba/spider_net
wangxun/txgbe
wangxun/ngbe
diff --git a/Documentation/networking/device_drivers/ethernet/toshiba/spider_net.rst b/Documentation/networking/device_drivers/ethernet/toshiba/spider_net.rst
deleted file mode 100644
index fe5b32be15cd..000000000000
--- a/Documentation/networking/device_drivers/ethernet/toshiba/spider_net.rst
+++ /dev/null
@@ -1,202 +0,0 @@
-.. SPDX-License-Identifier: GPL-2.0
-
-===========================
-The Spidernet Device Driver
-===========================
-
-Written by Linas Vepstas <linas at austin.ibm.com>
-
-Version of 7 June 2007
-
-Abstract
-========
-This document sketches the structure of portions of the spidernet
-device driver in the Linux kernel tree. The spidernet is a gigabit
-ethernet device built into the Toshiba southbridge commonly used
-in the SONY Playstation 3 and the IBM QS20 Cell blade.
-
-The Structure of the RX Ring.
-=============================
-The receive (RX) ring is a circular linked list of RX descriptors,
-together with three pointers into the ring that are used to manage its
-contents.
-
-The elements of the ring are called "descriptors" or "descrs"; they
-describe the received data. This includes a pointer to a buffer
-containing the received data, the buffer size, and various status bits.
-
-There are three primary states that a descriptor can be in: "empty",
-"full" and "not-in-use". An "empty" or "ready" descriptor is ready
-to receive data from the hardware. A "full" descriptor has data in it,
-and is waiting to be emptied and processed by the OS. A "not-in-use"
-descriptor is neither empty or full; it is simply not ready. It may
-not even have a data buffer in it, or is otherwise unusable.
-
-During normal operation, on device startup, the OS (specifically, the
-spidernet device driver) allocates a set of RX descriptors and RX
-buffers. These are all marked "empty", ready to receive data. This
-ring is handed off to the hardware, which sequentially fills in the
-buffers, and marks them "full". The OS follows up, taking the full
-buffers, processing them, and re-marking them empty.
-
-This filling and emptying is managed by three pointers, the "head"
-and "tail" pointers, managed by the OS, and a hardware current
-descriptor pointer (GDACTDPA). The GDACTDPA points at the descr
-currently being filled. When this descr is filled, the hardware
-marks it full, and advances the GDACTDPA by one. Thus, when there is
-flowing RX traffic, every descr behind it should be marked "full",
-and everything in front of it should be "empty". If the hardware
-discovers that the current descr is not empty, it will signal an
-interrupt, and halt processing.
-
-The tail pointer tails or trails the hardware pointer. When the
-hardware is ahead, the tail pointer will be pointing at a "full"
-descr. The OS will process this descr, and then mark it "not-in-use",
-and advance the tail pointer. Thus, when there is flowing RX traffic,
-all of the descrs in front of the tail pointer should be "full", and
-all of those behind it should be "not-in-use". When RX traffic is not
-flowing, then the tail pointer can catch up to the hardware pointer.
-The OS will then note that the current tail is "empty", and halt
-processing.
-
-The head pointer (somewhat mis-named) follows after the tail pointer.
-When traffic is flowing, then the head pointer will be pointing at
-a "not-in-use" descr. The OS will perform various housekeeping duties
-on this descr. This includes allocating a new data buffer and
-dma-mapping it so as to make it visible to the hardware. The OS will
-then mark the descr as "empty", ready to receive data. Thus, when there
-is flowing RX traffic, everything in front of the head pointer should
-be "not-in-use", and everything behind it should be "empty". If no
-RX traffic is flowing, then the head pointer can catch up to the tail
-pointer, at which point the OS will notice that the head descr is
-"empty", and it will halt processing.
-
-Thus, in an idle system, the GDACTDPA, tail and head pointers will
-all be pointing at the same descr, which should be "empty". All of the
-other descrs in the ring should be "empty" as well.
-
-The show_rx_chain() routine will print out the locations of the
-GDACTDPA, tail and head pointers. It will also summarize the contents
-of the ring, starting at the tail pointer, and listing the status
-of the descrs that follow.
-
-A typical example of the output, for a nearly idle system, might be::
-
- net eth1: Total number of descrs=256
- net eth1: Chain tail located at descr=20
- net eth1: Chain head is at 20
- net eth1: HW curr desc (GDACTDPA) is at 21
- net eth1: Have 1 descrs with stat=x40800101
- net eth1: HW next desc (GDACNEXTDA) is at 22
- net eth1: Last 255 descrs with stat=xa0800000
-
-In the above, the hardware has filled in one descr, number 20. Both
-head and tail are pointing at 20, because it has not yet been emptied.
-Meanwhile, hw is pointing at 21, which is free.
-
-The "Have nnn decrs" refers to the descr starting at the tail: in this
-case, nnn=1 descr, starting at descr 20. The "Last nnn descrs" refers
-to all of the rest of the descrs, from the last status change. The "nnn"
-is a count of how many descrs have exactly the same status.
-
-The status x4... corresponds to "full" and status xa... corresponds
-to "empty". The actual value printed is RXCOMST_A.
-
-In the device driver source code, a different set of names are
-used for these same concepts, so that::
-
- "empty" == SPIDER_NET_DESCR_CARDOWNED == 0xa
- "full" == SPIDER_NET_DESCR_FRAME_END == 0x4
- "not in use" == SPIDER_NET_DESCR_NOT_IN_USE == 0xf
-
-
-The RX RAM full bug/feature
-===========================
-
-As long as the OS can empty out the RX buffers at a rate faster than
-the hardware can fill them, there is no problem. If, for some reason,
-the OS fails to empty the RX ring fast enough, the hardware GDACTDPA
-pointer will catch up to the head, notice the not-empty condition,
-ad stop. However, RX packets may still continue arriving on the wire.
-The spidernet chip can save some limited number of these in local RAM.
-When this local ram fills up, the spider chip will issue an interrupt
-indicating this (GHIINT0STS will show ERRINT, and the GRMFLLINT bit
-will be set in GHIINT1STS). When the RX ram full condition occurs,
-a certain bug/feature is triggered that has to be specially handled.
-This section describes the special handling for this condition.
-
-When the OS finally has a chance to run, it will empty out the RX ring.
-In particular, it will clear the descriptor on which the hardware had
-stopped. However, once the hardware has decided that a certain
-descriptor is invalid, it will not restart at that descriptor; instead
-it will restart at the next descr. This potentially will lead to a
-deadlock condition, as the tail pointer will be pointing at this descr,
-which, from the OS point of view, is empty; the OS will be waiting for
-this descr to be filled. However, the hardware has skipped this descr,
-and is filling the next descrs. Since the OS doesn't see this, there
-is a potential deadlock, with the OS waiting for one descr to fill,
-while the hardware is waiting for a different set of descrs to become
-empty.
-
-A call to show_rx_chain() at this point indicates the nature of the
-problem. A typical print when the network is hung shows the following::
-
- net eth1: Spider RX RAM full, incoming packets might be discarded!
- net eth1: Total number of descrs=256
- net eth1: Chain tail located at descr=255
- net eth1: Chain head is at 255
- net eth1: HW curr desc (GDACTDPA) is at 0
- net eth1: Have 1 descrs with stat=xa0800000
- net eth1: HW next desc (GDACNEXTDA) is at 1
- net eth1: Have 127 descrs with stat=x40800101
- net eth1: Have 1 descrs with stat=x40800001
- net eth1: Have 126 descrs with stat=x40800101
- net eth1: Last 1 descrs with stat=xa0800000
-
-Both the tail and head pointers are pointing at descr 255, which is
-marked xa... which is "empty". Thus, from the OS point of view, there
-is nothing to be done. In particular, there is the implicit assumption
-that everything in front of the "empty" descr must surely also be empty,
-as explained in the last section. The OS is waiting for descr 255 to
-become non-empty, which, in this case, will never happen.
-
-The HW pointer is at descr 0. This descr is marked 0x4.. or "full".
-Since its already full, the hardware can do nothing more, and thus has
-halted processing. Notice that descrs 0 through 254 are all marked
-"full", while descr 254 and 255 are empty. (The "Last 1 descrs" is
-descr 254, since tail was at 255.) Thus, the system is deadlocked,
-and there can be no forward progress; the OS thinks there's nothing
-to do, and the hardware has nowhere to put incoming data.
-
-This bug/feature is worked around with the spider_net_resync_head_ptr()
-routine. When the driver receives RX interrupts, but an examination
-of the RX chain seems to show it is empty, then it is probable that
-the hardware has skipped a descr or two (sometimes dozens under heavy
-network conditions). The spider_net_resync_head_ptr() subroutine will
-search the ring for the next full descr, and the driver will resume
-operations there. Since this will leave "holes" in the ring, there
-is also a spider_net_resync_tail_ptr() that will skip over such holes.
-
-As of this writing, the spider_net_resync() strategy seems to work very
-well, even under heavy network loads.
-
-
-The TX ring
-===========
-The TX ring uses a low-watermark interrupt scheme to make sure that
-the TX queue is appropriately serviced for large packet sizes.
-
-For packet sizes greater than about 1KBytes, the kernel can fill
-the TX ring quicker than the device can drain it. Once the ring
-is full, the netdev is stopped. When there is room in the ring,
-the netdev needs to be reawakened, so that more TX packets are placed
-in the ring. The hardware can empty the ring about four times per jiffy,
-so its not appropriate to wait for the poll routine to refill, since
-the poll routine runs only once per jiffy. The low-watermark mechanism
-marks a descr about 1/4th of the way from the bottom of the queue, so
-that an interrupt is generated when the descr is processed. This
-interrupt wakes up the netdev, which can then refill the queue.
-For large packets, this mechanism generates a relatively small number
-of interrupts, about 1K/sec. For smaller packets, this will drop to zero
-interrupts, as the hardware can empty the queue faster than the kernel
-can fill it.
diff --git a/MAINTAINERS b/MAINTAINERS
index 279560bf2b6d..ef51376a3873 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -22070,15 +22070,6 @@ F: include/linux/spi/
F: include/uapi/linux/spi/
F: tools/spi/
-SPIDERNET NETWORK DRIVER for CELL
-M: Ishizaki Kou <kou.ishizaki at toshiba.co.jp>
-M: Geoff Levand <geoff at infradead.org>
-L: netdev at vger.kernel.org
-L: linuxppc-dev at lists.ozlabs.org
-S: Maintained
-F: Documentation/networking/device_drivers/ethernet/toshiba/spider_net.rst
-F: drivers/net/ethernet/toshiba/spider_net*
-
SPMI SUBSYSTEM
M: Stephen Boyd <sboyd at kernel.org>
L: linux-kernel at vger.kernel.org
diff --git a/drivers/net/ethernet/toshiba/Kconfig b/drivers/net/ethernet/toshiba/Kconfig
index 701e9b7c1c3b..2b1081598284 100644
--- a/drivers/net/ethernet/toshiba/Kconfig
+++ b/drivers/net/ethernet/toshiba/Kconfig
@@ -39,15 +39,6 @@ config GELIC_WIRELESS
the driver automatically distinguishes the models, you can
safely enable this option even if you have a wireless-less model.
-config SPIDER_NET
- tristate "Spider Gigabit Ethernet driver"
- depends on PCI && PPC_IBM_CELL_BLADE
- select FW_LOADER
- select SUNGEM_PHY
- help
- This driver supports the Gigabit Ethernet chips present on the
- Cell Processor-Based Blades from IBM.
-
config TC35815
tristate "TOSHIBA TC35815 Ethernet support"
depends on PCI && MIPS
diff --git a/drivers/net/ethernet/toshiba/Makefile b/drivers/net/ethernet/toshiba/Makefile
index f434fd0f429e..27e2164cf7e9 100644
--- a/drivers/net/ethernet/toshiba/Makefile
+++ b/drivers/net/ethernet/toshiba/Makefile
@@ -6,6 +6,4 @@
obj-$(CONFIG_GELIC_NET) += ps3_gelic.o
gelic_wireless-$(CONFIG_GELIC_WIRELESS) += ps3_gelic_wireless.o
ps3_gelic-objs += ps3_gelic_net.o $(gelic_wireless-y)
-spidernet-y += spider_net.o spider_net_ethtool.o
-obj-$(CONFIG_SPIDER_NET) += spidernet.o
obj-$(CONFIG_TC35815) += tc35815.o
diff --git a/drivers/net/ethernet/toshiba/spider_net.c b/drivers/net/ethernet/toshiba/spider_net.c
deleted file mode 100644
index a4937c18d7cb..000000000000
--- a/drivers/net/ethernet/toshiba/spider_net.c
+++ /dev/null
@@ -1,2556 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * Network device driver for Cell Processor-Based Blade and Celleb platform
- *
- * (C) Copyright IBM Corp. 2005
- * (C) Copyright 2006 TOSHIBA CORPORATION
- *
- * Authors : Utz Bacher <utz.bacher at de.ibm.com>
- * Jens Osterkamp <Jens.Osterkamp at de.ibm.com>
- */
-
-#include <linux/compiler.h>
-#include <linux/crc32.h>
-#include <linux/delay.h>
-#include <linux/etherdevice.h>
-#include <linux/ethtool.h>
-#include <linux/firmware.h>
-#include <linux/if_vlan.h>
-#include <linux/in.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/gfp.h>
-#include <linux/ioport.h>
-#include <linux/ip.h>
-#include <linux/kernel.h>
-#include <linux/mii.h>
-#include <linux/module.h>
-#include <linux/netdevice.h>
-#include <linux/device.h>
-#include <linux/pci.h>
-#include <linux/skbuff.h>
-#include <linux/tcp.h>
-#include <linux/types.h>
-#include <linux/vmalloc.h>
-#include <linux/wait.h>
-#include <linux/workqueue.h>
-#include <linux/bitops.h>
-#include <linux/of.h>
-#include <net/checksum.h>
-
-#include "spider_net.h"
-
-MODULE_AUTHOR("Utz Bacher <utz.bacher at de.ibm.com> and Jens Osterkamp " \
- "<Jens.Osterkamp at de.ibm.com>");
-MODULE_DESCRIPTION("Spider Southbridge Gigabit Ethernet driver");
-MODULE_LICENSE("GPL");
-MODULE_VERSION(VERSION);
-MODULE_FIRMWARE(SPIDER_NET_FIRMWARE_NAME);
-
-static int rx_descriptors = SPIDER_NET_RX_DESCRIPTORS_DEFAULT;
-static int tx_descriptors = SPIDER_NET_TX_DESCRIPTORS_DEFAULT;
-
-module_param(rx_descriptors, int, 0444);
-module_param(tx_descriptors, int, 0444);
-
-MODULE_PARM_DESC(rx_descriptors, "number of descriptors used " \
- "in rx chains");
-MODULE_PARM_DESC(tx_descriptors, "number of descriptors used " \
- "in tx chain");
-
-char spider_net_driver_name[] = "spidernet";
-
-static const struct pci_device_id spider_net_pci_tbl[] = {
- { PCI_VENDOR_ID_TOSHIBA_2, PCI_DEVICE_ID_TOSHIBA_SPIDER_NET,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
- { 0, }
-};
-
-MODULE_DEVICE_TABLE(pci, spider_net_pci_tbl);
-
-/**
- * spider_net_read_reg - reads an SMMIO register of a card
- * @card: device structure
- * @reg: register to read from
- *
- * returns the content of the specified SMMIO register.
- */
-static inline u32
-spider_net_read_reg(struct spider_net_card *card, u32 reg)
-{
- /* We use the powerpc specific variants instead of readl_be() because
- * we know spidernet is not a real PCI device and we can thus avoid the
- * performance hit caused by the PCI workarounds.
- */
- return in_be32(card->regs + reg);
-}
-
-/**
- * spider_net_write_reg - writes to an SMMIO register of a card
- * @card: device structure
- * @reg: register to write to
- * @value: value to write into the specified SMMIO register
- */
-static inline void
-spider_net_write_reg(struct spider_net_card *card, u32 reg, u32 value)
-{
- /* We use the powerpc specific variants instead of writel_be() because
- * we know spidernet is not a real PCI device and we can thus avoid the
- * performance hit caused by the PCI workarounds.
- */
- out_be32(card->regs + reg, value);
-}
-
-/**
- * spider_net_write_phy - write to phy register
- * @netdev: adapter to be written to
- * @mii_id: id of MII
- * @reg: PHY register
- * @val: value to be written to phy register
- *
- * spider_net_write_phy_register writes to an arbitrary PHY
- * register via the spider GPCWOPCMD register. We assume the queue does
- * not run full (not more than 15 commands outstanding).
- **/
-static void
-spider_net_write_phy(struct net_device *netdev, int mii_id,
- int reg, int val)
-{
- struct spider_net_card *card = netdev_priv(netdev);
- u32 writevalue;
-
- writevalue = ((u32)mii_id << 21) |
- ((u32)reg << 16) | ((u32)val);
-
- spider_net_write_reg(card, SPIDER_NET_GPCWOPCMD, writevalue);
-}
-
-/**
- * spider_net_read_phy - read from phy register
- * @netdev: network device to be read from
- * @mii_id: id of MII
- * @reg: PHY register
- *
- * Returns value read from PHY register
- *
- * spider_net_write_phy reads from an arbitrary PHY
- * register via the spider GPCROPCMD register
- **/
-static int
-spider_net_read_phy(struct net_device *netdev, int mii_id, int reg)
-{
- struct spider_net_card *card = netdev_priv(netdev);
- u32 readvalue;
-
- readvalue = ((u32)mii_id << 21) | ((u32)reg << 16);
- spider_net_write_reg(card, SPIDER_NET_GPCROPCMD, readvalue);
-
- /* we don't use semaphores to wait for an SPIDER_NET_GPROPCMPINT
- * interrupt, as we poll for the completion of the read operation
- * in spider_net_read_phy. Should take about 50 us
- */
- do {
- readvalue = spider_net_read_reg(card, SPIDER_NET_GPCROPCMD);
- } while (readvalue & SPIDER_NET_GPREXEC);
-
- readvalue &= SPIDER_NET_GPRDAT_MASK;
-
- return readvalue;
-}
-
-/**
- * spider_net_setup_aneg - initial auto-negotiation setup
- * @card: device structure
- **/
-static void
-spider_net_setup_aneg(struct spider_net_card *card)
-{
- struct mii_phy *phy = &card->phy;
- u32 advertise = 0;
- u16 bmsr, estat;
-
- bmsr = spider_net_read_phy(card->netdev, phy->mii_id, MII_BMSR);
- estat = spider_net_read_phy(card->netdev, phy->mii_id, MII_ESTATUS);
-
- if (bmsr & BMSR_10HALF)
- advertise |= ADVERTISED_10baseT_Half;
- if (bmsr & BMSR_10FULL)
- advertise |= ADVERTISED_10baseT_Full;
- if (bmsr & BMSR_100HALF)
- advertise |= ADVERTISED_100baseT_Half;
- if (bmsr & BMSR_100FULL)
- advertise |= ADVERTISED_100baseT_Full;
-
- if ((bmsr & BMSR_ESTATEN) && (estat & ESTATUS_1000_TFULL))
- advertise |= SUPPORTED_1000baseT_Full;
- if ((bmsr & BMSR_ESTATEN) && (estat & ESTATUS_1000_THALF))
- advertise |= SUPPORTED_1000baseT_Half;
-
- sungem_phy_probe(phy, phy->mii_id);
- phy->def->ops->setup_aneg(phy, advertise);
-
-}
-
-/**
- * spider_net_rx_irq_off - switch off rx irq on this spider card
- * @card: device structure
- *
- * switches off rx irq by masking them out in the GHIINTnMSK register
- */
-static void
-spider_net_rx_irq_off(struct spider_net_card *card)
-{
- u32 regvalue;
-
- regvalue = SPIDER_NET_INT0_MASK_VALUE & (~SPIDER_NET_RXINT);
- spider_net_write_reg(card, SPIDER_NET_GHIINT0MSK, regvalue);
-}
-
-/**
- * spider_net_rx_irq_on - switch on rx irq on this spider card
- * @card: device structure
- *
- * switches on rx irq by enabling them in the GHIINTnMSK register
- */
-static void
-spider_net_rx_irq_on(struct spider_net_card *card)
-{
- u32 regvalue;
-
- regvalue = SPIDER_NET_INT0_MASK_VALUE | SPIDER_NET_RXINT;
- spider_net_write_reg(card, SPIDER_NET_GHIINT0MSK, regvalue);
-}
-
-/**
- * spider_net_set_promisc - sets the unicast address or the promiscuous mode
- * @card: card structure
- *
- * spider_net_set_promisc sets the unicast destination address filter and
- * thus either allows for non-promisc mode or promisc mode
- */
-static void
-spider_net_set_promisc(struct spider_net_card *card)
-{
- u32 macu, macl;
- struct net_device *netdev = card->netdev;
-
- if (netdev->flags & IFF_PROMISC) {
- /* clear destination entry 0 */
- spider_net_write_reg(card, SPIDER_NET_GMRUAFILnR, 0);
- spider_net_write_reg(card, SPIDER_NET_GMRUAFILnR + 0x04, 0);
- spider_net_write_reg(card, SPIDER_NET_GMRUA0FIL15R,
- SPIDER_NET_PROMISC_VALUE);
- } else {
- macu = netdev->dev_addr[0];
- macu <<= 8;
- macu |= netdev->dev_addr[1];
- memcpy(&macl, &netdev->dev_addr[2], sizeof(macl));
-
- macu |= SPIDER_NET_UA_DESCR_VALUE;
- spider_net_write_reg(card, SPIDER_NET_GMRUAFILnR, macu);
- spider_net_write_reg(card, SPIDER_NET_GMRUAFILnR + 0x04, macl);
- spider_net_write_reg(card, SPIDER_NET_GMRUA0FIL15R,
- SPIDER_NET_NONPROMISC_VALUE);
- }
-}
-
-/**
- * spider_net_get_descr_status -- returns the status of a descriptor
- * @hwdescr: descriptor to look at
- *
- * returns the status as in the dmac_cmd_status field of the descriptor
- */
-static inline int
-spider_net_get_descr_status(struct spider_net_hw_descr *hwdescr)
-{
- return hwdescr->dmac_cmd_status & SPIDER_NET_DESCR_IND_PROC_MASK;
-}
-
-/**
- * spider_net_free_chain - free descriptor chain
- * @card: card structure
- * @chain: address of chain
- *
- */
-static void
-spider_net_free_chain(struct spider_net_card *card,
- struct spider_net_descr_chain *chain)
-{
- struct spider_net_descr *descr;
-
- descr = chain->ring;
- do {
- descr->bus_addr = 0;
- descr->hwdescr->next_descr_addr = 0;
- descr = descr->next;
- } while (descr != chain->ring);
-
- dma_free_coherent(&card->pdev->dev, chain->num_desc * sizeof(struct spider_net_hw_descr),
- chain->hwring, chain->dma_addr);
-}
-
-/**
- * spider_net_init_chain - alloc and link descriptor chain
- * @card: card structure
- * @chain: address of chain
- *
- * 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
-spider_net_init_chain(struct spider_net_card *card,
- struct spider_net_descr_chain *chain)
-{
- int i;
- struct spider_net_descr *descr;
- struct spider_net_hw_descr *hwdescr;
- dma_addr_t buf;
- size_t alloc_size;
-
- alloc_size = chain->num_desc * sizeof(struct spider_net_hw_descr);
-
- chain->hwring = dma_alloc_coherent(&card->pdev->dev, alloc_size,
- &chain->dma_addr, GFP_KERNEL);
- if (!chain->hwring)
- return -ENOMEM;
-
- /* Set up the hardware pointers in each descriptor */
- descr = chain->ring;
- hwdescr = chain->hwring;
- buf = chain->dma_addr;
- for (i=0; i < chain->num_desc; i++, descr++, hwdescr++) {
- hwdescr->dmac_cmd_status = SPIDER_NET_DESCR_NOT_IN_USE;
- hwdescr->next_descr_addr = 0;
-
- descr->hwdescr = hwdescr;
- descr->bus_addr = buf;
- descr->next = descr + 1;
- descr->prev = descr - 1;
-
- buf += sizeof(struct spider_net_hw_descr);
- }
- /* do actual circular list */
- (descr-1)->next = chain->ring;
- chain->ring->prev = descr-1;
-
- spin_lock_init(&chain->lock);
- chain->head = chain->ring;
- chain->tail = chain->ring;
- return 0;
-}
-
-/**
- * spider_net_free_rx_chain_contents - frees descr contents in rx chain
- * @card: card structure
- *
- * returns 0 on success, <0 on failure
- */
-static void
-spider_net_free_rx_chain_contents(struct spider_net_card *card)
-{
- struct spider_net_descr *descr;
-
- descr = card->rx_chain.head;
- do {
- if (descr->skb) {
- dma_unmap_single(&card->pdev->dev,
- descr->hwdescr->buf_addr,
- SPIDER_NET_MAX_FRAME,
- DMA_BIDIRECTIONAL);
- dev_kfree_skb(descr->skb);
- descr->skb = NULL;
- }
- descr = descr->next;
- } while (descr != card->rx_chain.head);
-}
-
-/**
- * spider_net_prepare_rx_descr - Reinitialize RX descriptor
- * @card: card structure
- * @descr: descriptor to re-init
- *
- * Return 0 on success, <0 on failure.
- *
- * Allocates a new rx skb, iommu-maps it and attaches it to the
- * descriptor. Mark the descriptor as activated, ready-to-use.
- */
-static int
-spider_net_prepare_rx_descr(struct spider_net_card *card,
- struct spider_net_descr *descr)
-{
- struct spider_net_hw_descr *hwdescr = descr->hwdescr;
- dma_addr_t buf;
- int offset;
- int bufsize;
-
- /* we need to round up the buffer size to a multiple of 128 */
- bufsize = (SPIDER_NET_MAX_FRAME + SPIDER_NET_RXBUF_ALIGN - 1) &
- (~(SPIDER_NET_RXBUF_ALIGN - 1));
-
- /* and we need to have it 128 byte aligned, therefore we allocate a
- * bit more
- */
- /* allocate an skb */
- descr->skb = netdev_alloc_skb(card->netdev,
- bufsize + SPIDER_NET_RXBUF_ALIGN - 1);
- if (!descr->skb) {
- if (netif_msg_rx_err(card) && net_ratelimit())
- dev_err(&card->netdev->dev,
- "Not enough memory to allocate rx buffer\n");
- card->spider_stats.alloc_rx_skb_error++;
- return -ENOMEM;
- }
- hwdescr->buf_size = bufsize;
- hwdescr->result_size = 0;
- hwdescr->valid_size = 0;
- hwdescr->data_status = 0;
- hwdescr->data_error = 0;
-
- offset = ((unsigned long)descr->skb->data) &
- (SPIDER_NET_RXBUF_ALIGN - 1);
- if (offset)
- skb_reserve(descr->skb, SPIDER_NET_RXBUF_ALIGN - offset);
- /* iommu-map the skb */
- buf = dma_map_single(&card->pdev->dev, descr->skb->data,
- SPIDER_NET_MAX_FRAME, DMA_FROM_DEVICE);
- if (dma_mapping_error(&card->pdev->dev, buf)) {
- dev_kfree_skb_any(descr->skb);
- descr->skb = NULL;
- if (netif_msg_rx_err(card) && net_ratelimit())
- dev_err(&card->netdev->dev, "Could not iommu-map rx buffer\n");
- card->spider_stats.rx_iommu_map_error++;
- hwdescr->dmac_cmd_status = SPIDER_NET_DESCR_NOT_IN_USE;
- } else {
- hwdescr->buf_addr = buf;
- wmb();
- hwdescr->dmac_cmd_status = SPIDER_NET_DESCR_CARDOWNED |
- SPIDER_NET_DMAC_NOINTR_COMPLETE;
- }
-
- return 0;
-}
-
-/**
- * spider_net_enable_rxchtails - sets RX dmac chain tail addresses
- * @card: card structure
- *
- * spider_net_enable_rxchtails sets the RX DMAC chain tail addresses in the
- * chip by writing to the appropriate register. DMA is enabled in
- * spider_net_enable_rxdmac.
- */
-static inline void
-spider_net_enable_rxchtails(struct spider_net_card *card)
-{
- /* assume chain is aligned correctly */
- spider_net_write_reg(card, SPIDER_NET_GDADCHA ,
- card->rx_chain.tail->bus_addr);
-}
-
-/**
- * spider_net_enable_rxdmac - enables a receive DMA controller
- * @card: card structure
- *
- * spider_net_enable_rxdmac enables the DMA controller by setting RX_DMA_EN
- * in the GDADMACCNTR register
- */
-static inline void
-spider_net_enable_rxdmac(struct spider_net_card *card)
-{
- wmb();
- spider_net_write_reg(card, SPIDER_NET_GDADMACCNTR,
- SPIDER_NET_DMA_RX_VALUE);
-}
-
-/**
- * spider_net_disable_rxdmac - disables the receive DMA controller
- * @card: card structure
- *
- * spider_net_disable_rxdmac terminates processing on the DMA controller
- * by turing off the DMA controller, with the force-end flag set.
- */
-static inline void
-spider_net_disable_rxdmac(struct spider_net_card *card)
-{
- spider_net_write_reg(card, SPIDER_NET_GDADMACCNTR,
- SPIDER_NET_DMA_RX_FEND_VALUE);
-}
-
-/**
- * spider_net_refill_rx_chain - refills descriptors/skbs in the rx chains
- * @card: card structure
- *
- * refills descriptors in the rx chain: allocates skbs and iommu-maps them.
- */
-static void
-spider_net_refill_rx_chain(struct spider_net_card *card)
-{
- struct spider_net_descr_chain *chain = &card->rx_chain;
- unsigned long flags;
-
- /* one context doing the refill (and a second context seeing that
- * and omitting it) is ok. If called by NAPI, we'll be called again
- * as spider_net_decode_one_descr is called several times. If some
- * interrupt calls us, the NAPI is about to clean up anyway.
- */
- if (!spin_trylock_irqsave(&chain->lock, flags))
- return;
-
- while (spider_net_get_descr_status(chain->head->hwdescr) ==
- SPIDER_NET_DESCR_NOT_IN_USE) {
- if (spider_net_prepare_rx_descr(card, chain->head))
- break;
- chain->head = chain->head->next;
- }
-
- spin_unlock_irqrestore(&chain->lock, flags);
-}
-
-/**
- * spider_net_alloc_rx_skbs - Allocates rx skbs in rx descriptor chains
- * @card: card structure
- *
- * Returns 0 on success, <0 on failure.
- */
-static int
-spider_net_alloc_rx_skbs(struct spider_net_card *card)
-{
- struct spider_net_descr_chain *chain = &card->rx_chain;
- struct spider_net_descr *start = chain->tail;
- struct spider_net_descr *descr = start;
-
- /* Link up the hardware chain pointers */
- do {
- descr->prev->hwdescr->next_descr_addr = descr->bus_addr;
- descr = descr->next;
- } while (descr != start);
-
- /* Put at least one buffer into the chain. if this fails,
- * we've got a problem. If not, spider_net_refill_rx_chain
- * will do the rest at the end of this function.
- */
- if (spider_net_prepare_rx_descr(card, chain->head))
- goto error;
- else
- chain->head = chain->head->next;
-
- /* This will allocate the rest of the rx buffers;
- * if not, it's business as usual later on.
- */
- spider_net_refill_rx_chain(card);
- spider_net_enable_rxdmac(card);
- return 0;
-
-error:
- spider_net_free_rx_chain_contents(card);
- return -ENOMEM;
-}
-
-/**
- * spider_net_get_multicast_hash - generates hash for multicast filter table
- * @netdev: interface device structure
- * @addr: multicast address
- *
- * returns the hash value.
- *
- * spider_net_get_multicast_hash calculates a hash value for a given multicast
- * address, that is used to set the multicast filter tables
- */
-static u8
-spider_net_get_multicast_hash(struct net_device *netdev, __u8 *addr)
-{
- u32 crc;
- u8 hash;
- char addr_for_crc[ETH_ALEN] = { 0, };
- int i, bit;
-
- for (i = 0; i < ETH_ALEN * 8; i++) {
- bit = (addr[i / 8] >> (i % 8)) & 1;
- addr_for_crc[ETH_ALEN - 1 - i / 8] += bit << (7 - (i % 8));
- }
-
- crc = crc32_be(~0, addr_for_crc, netdev->addr_len);
-
- hash = (crc >> 27);
- hash <<= 3;
- hash |= crc & 7;
- hash &= 0xff;
-
- return hash;
-}
-
-/**
- * spider_net_set_multi - sets multicast addresses and promisc flags
- * @netdev: interface device structure
- *
- * spider_net_set_multi configures multicast addresses as needed for the
- * netdev interface. It also sets up multicast, allmulti and promisc
- * flags appropriately
- */
-static void
-spider_net_set_multi(struct net_device *netdev)
-{
- struct netdev_hw_addr *ha;
- u8 hash;
- int i;
- u32 reg;
- struct spider_net_card *card = netdev_priv(netdev);
- DECLARE_BITMAP(bitmask, SPIDER_NET_MULTICAST_HASHES);
-
- spider_net_set_promisc(card);
-
- if (netdev->flags & IFF_ALLMULTI) {
- bitmap_fill(bitmask, SPIDER_NET_MULTICAST_HASHES);
- goto write_hash;
- }
-
- bitmap_zero(bitmask, SPIDER_NET_MULTICAST_HASHES);
-
- /* well, we know, what the broadcast hash value is: it's xfd
- hash = spider_net_get_multicast_hash(netdev, netdev->broadcast); */
- __set_bit(0xfd, bitmask);
-
- netdev_for_each_mc_addr(ha, netdev) {
- hash = spider_net_get_multicast_hash(netdev, ha->addr);
- __set_bit(hash, bitmask);
- }
-
-write_hash:
- for (i = 0; i < SPIDER_NET_MULTICAST_HASHES / 4; i++) {
- reg = 0;
- if (test_bit(i * 4, bitmask))
- reg += 0x08;
- reg <<= 8;
- if (test_bit(i * 4 + 1, bitmask))
- reg += 0x08;
- reg <<= 8;
- if (test_bit(i * 4 + 2, bitmask))
- reg += 0x08;
- reg <<= 8;
- if (test_bit(i * 4 + 3, bitmask))
- reg += 0x08;
-
- spider_net_write_reg(card, SPIDER_NET_GMRMHFILnR + i * 4, reg);
- }
-}
-
-/**
- * spider_net_prepare_tx_descr - fill tx descriptor with skb data
- * @card: card structure
- * @skb: packet to use
- *
- * returns 0 on success, <0 on failure.
- *
- * fills out the descriptor structure with skb data and len. Copies data,
- * if needed (32bit DMA!)
- */
-static int
-spider_net_prepare_tx_descr(struct spider_net_card *card,
- struct sk_buff *skb)
-{
- struct spider_net_descr_chain *chain = &card->tx_chain;
- struct spider_net_descr *descr;
- struct spider_net_hw_descr *hwdescr;
- dma_addr_t buf;
- unsigned long flags;
-
- buf = dma_map_single(&card->pdev->dev, skb->data, skb->len,
- DMA_TO_DEVICE);
- if (dma_mapping_error(&card->pdev->dev, buf)) {
- if (netif_msg_tx_err(card) && net_ratelimit())
- dev_err(&card->netdev->dev, "could not iommu-map packet (%p, %i). "
- "Dropping packet\n", skb->data, skb->len);
- card->spider_stats.tx_iommu_map_error++;
- return -ENOMEM;
- }
-
- spin_lock_irqsave(&chain->lock, flags);
- descr = card->tx_chain.head;
- if (descr->next == chain->tail->prev) {
- spin_unlock_irqrestore(&chain->lock, flags);
- dma_unmap_single(&card->pdev->dev, buf, skb->len,
- DMA_TO_DEVICE);
- return -ENOMEM;
- }
- hwdescr = descr->hwdescr;
- chain->head = descr->next;
-
- descr->skb = skb;
- hwdescr->buf_addr = buf;
- hwdescr->buf_size = skb->len;
- hwdescr->next_descr_addr = 0;
- hwdescr->data_status = 0;
-
- hwdescr->dmac_cmd_status =
- SPIDER_NET_DESCR_CARDOWNED | SPIDER_NET_DMAC_TXFRMTL;
- spin_unlock_irqrestore(&chain->lock, flags);
-
- if (skb->ip_summed == CHECKSUM_PARTIAL)
- switch (ip_hdr(skb)->protocol) {
- case IPPROTO_TCP:
- hwdescr->dmac_cmd_status |= SPIDER_NET_DMAC_TCP;
- break;
- case IPPROTO_UDP:
- hwdescr->dmac_cmd_status |= SPIDER_NET_DMAC_UDP;
- break;
- }
-
- /* Chain the bus address, so that the DMA engine finds this descr. */
- wmb();
- descr->prev->hwdescr->next_descr_addr = descr->bus_addr;
-
- netif_trans_update(card->netdev); /* set netdev watchdog timer */
- return 0;
-}
-
-static int
-spider_net_set_low_watermark(struct spider_net_card *card)
-{
- struct spider_net_descr *descr = card->tx_chain.tail;
- struct spider_net_hw_descr *hwdescr;
- unsigned long flags;
- int status;
- int cnt=0;
- int i;
-
- /* Measure the length of the queue. Measurement does not
- * need to be precise -- does not need a lock.
- */
- while (descr != card->tx_chain.head) {
- status = descr->hwdescr->dmac_cmd_status & SPIDER_NET_DESCR_NOT_IN_USE;
- if (status == SPIDER_NET_DESCR_NOT_IN_USE)
- break;
- descr = descr->next;
- cnt++;
- }
-
- /* If TX queue is short, don't even bother with interrupts */
- if (cnt < card->tx_chain.num_desc/4)
- return cnt;
-
- /* Set low-watermark 3/4th's of the way into the queue. */
- descr = card->tx_chain.tail;
- cnt = (cnt*3)/4;
- for (i=0;i<cnt; i++)
- descr = descr->next;
-
- /* Set the new watermark, clear the old watermark */
- spin_lock_irqsave(&card->tx_chain.lock, flags);
- descr->hwdescr->dmac_cmd_status |= SPIDER_NET_DESCR_TXDESFLG;
- if (card->low_watermark && card->low_watermark != descr) {
- hwdescr = card->low_watermark->hwdescr;
- hwdescr->dmac_cmd_status =
- hwdescr->dmac_cmd_status & ~SPIDER_NET_DESCR_TXDESFLG;
- }
- card->low_watermark = descr;
- spin_unlock_irqrestore(&card->tx_chain.lock, flags);
- return cnt;
-}
-
-/**
- * spider_net_release_tx_chain - processes sent tx descriptors
- * @card: adapter structure
- * @brutal: if set, don't care about whether descriptor seems to be in use
- *
- * returns 0 if the tx ring is empty, otherwise 1.
- *
- * spider_net_release_tx_chain releases the tx descriptors that spider has
- * finished with (if non-brutal) or simply release tx descriptors (if brutal).
- * If some other context is calling this function, we return 1 so that we're
- * scheduled again (if we were scheduled) and will not lose initiative.
- */
-static int
-spider_net_release_tx_chain(struct spider_net_card *card, int brutal)
-{
- struct net_device *dev = card->netdev;
- struct spider_net_descr_chain *chain = &card->tx_chain;
- struct spider_net_descr *descr;
- struct spider_net_hw_descr *hwdescr;
- struct sk_buff *skb;
- u32 buf_addr;
- unsigned long flags;
- int status;
-
- while (1) {
- spin_lock_irqsave(&chain->lock, flags);
- if (chain->tail == chain->head) {
- spin_unlock_irqrestore(&chain->lock, flags);
- return 0;
- }
- descr = chain->tail;
- hwdescr = descr->hwdescr;
-
- status = spider_net_get_descr_status(hwdescr);
- switch (status) {
- case SPIDER_NET_DESCR_COMPLETE:
- dev->stats.tx_packets++;
- dev->stats.tx_bytes += descr->skb->len;
- break;
-
- case SPIDER_NET_DESCR_CARDOWNED:
- if (!brutal) {
- spin_unlock_irqrestore(&chain->lock, flags);
- return 1;
- }
-
- /* fallthrough, if we release the descriptors
- * brutally (then we don't care about
- * SPIDER_NET_DESCR_CARDOWNED)
- */
- fallthrough;
-
- case SPIDER_NET_DESCR_RESPONSE_ERROR:
- case SPIDER_NET_DESCR_PROTECTION_ERROR:
- case SPIDER_NET_DESCR_FORCE_END:
- if (netif_msg_tx_err(card))
- dev_err(&card->netdev->dev, "forcing end of tx descriptor "
- "with status x%02x\n", status);
- dev->stats.tx_errors++;
- break;
-
- default:
- dev->stats.tx_dropped++;
- if (!brutal) {
- spin_unlock_irqrestore(&chain->lock, flags);
- return 1;
- }
- }
-
- chain->tail = descr->next;
- hwdescr->dmac_cmd_status |= SPIDER_NET_DESCR_NOT_IN_USE;
- skb = descr->skb;
- descr->skb = NULL;
- buf_addr = hwdescr->buf_addr;
- spin_unlock_irqrestore(&chain->lock, flags);
-
- /* unmap the skb */
- if (skb) {
- dma_unmap_single(&card->pdev->dev, buf_addr, skb->len,
- DMA_TO_DEVICE);
- dev_consume_skb_any(skb);
- }
- }
- return 0;
-}
-
-/**
- * spider_net_kick_tx_dma - enables TX DMA processing
- * @card: card structure
- *
- * This routine will start the transmit DMA running if
- * it is not already running. This routine ned only be
- * called when queueing a new packet to an empty tx queue.
- * Writes the current tx chain head as start address
- * of the tx descriptor chain and enables the transmission
- * DMA engine.
- */
-static inline void
-spider_net_kick_tx_dma(struct spider_net_card *card)
-{
- struct spider_net_descr *descr;
-
- if (spider_net_read_reg(card, SPIDER_NET_GDTDMACCNTR) &
- SPIDER_NET_TX_DMA_EN)
- goto out;
-
- descr = card->tx_chain.tail;
- for (;;) {
- if (spider_net_get_descr_status(descr->hwdescr) ==
- SPIDER_NET_DESCR_CARDOWNED) {
- spider_net_write_reg(card, SPIDER_NET_GDTDCHA,
- descr->bus_addr);
- spider_net_write_reg(card, SPIDER_NET_GDTDMACCNTR,
- SPIDER_NET_DMA_TX_VALUE);
- break;
- }
- if (descr == card->tx_chain.head)
- break;
- descr = descr->next;
- }
-
-out:
- mod_timer(&card->tx_timer, jiffies + SPIDER_NET_TX_TIMER);
-}
-
-/**
- * spider_net_xmit - transmits a frame over the device
- * @skb: packet to send out
- * @netdev: interface device structure
- *
- * returns NETDEV_TX_OK on success, NETDEV_TX_BUSY on failure
- */
-static netdev_tx_t
-spider_net_xmit(struct sk_buff *skb, struct net_device *netdev)
-{
- int cnt;
- struct spider_net_card *card = netdev_priv(netdev);
-
- spider_net_release_tx_chain(card, 0);
-
- if (spider_net_prepare_tx_descr(card, skb) != 0) {
- netdev->stats.tx_dropped++;
- netif_stop_queue(netdev);
- return NETDEV_TX_BUSY;
- }
-
- cnt = spider_net_set_low_watermark(card);
- if (cnt < 5)
- spider_net_kick_tx_dma(card);
- return NETDEV_TX_OK;
-}
-
-/**
- * spider_net_cleanup_tx_ring - cleans up the TX ring
- * @t: timer context used to obtain the pointer to net card data structure
- *
- * spider_net_cleanup_tx_ring is called by either the tx_timer
- * or from the NAPI polling routine.
- * This routine releases resources associted with transmitted
- * packets, including updating the queue tail pointer.
- */
-static void
-spider_net_cleanup_tx_ring(struct timer_list *t)
-{
- struct spider_net_card *card = from_timer(card, t, tx_timer);
- if ((spider_net_release_tx_chain(card, 0) != 0) &&
- (card->netdev->flags & IFF_UP)) {
- spider_net_kick_tx_dma(card);
- netif_wake_queue(card->netdev);
- }
-}
-
-/**
- * spider_net_do_ioctl - called for device ioctls
- * @netdev: interface device structure
- * @ifr: request parameter structure for ioctl
- * @cmd: command code for ioctl
- *
- * returns 0 on success, <0 on failure. Currently, we have no special ioctls.
- * -EOPNOTSUPP is returned, if an unknown ioctl was requested
- */
-static int
-spider_net_do_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
-{
- switch (cmd) {
- default:
- return -EOPNOTSUPP;
- }
-}
-
-/**
- * spider_net_pass_skb_up - takes an skb from a descriptor and passes it on
- * @descr: descriptor to process
- * @card: card structure
- *
- * Fills out skb structure and passes the data to the stack.
- * The descriptor state is not changed.
- */
-static void
-spider_net_pass_skb_up(struct spider_net_descr *descr,
- struct spider_net_card *card)
-{
- struct spider_net_hw_descr *hwdescr = descr->hwdescr;
- struct sk_buff *skb = descr->skb;
- struct net_device *netdev = card->netdev;
- u32 data_status = hwdescr->data_status;
- u32 data_error = hwdescr->data_error;
-
- skb_put(skb, hwdescr->valid_size);
-
- /* the card seems to add 2 bytes of junk in front
- * of the ethernet frame
- */
-#define SPIDER_MISALIGN 2
- skb_pull(skb, SPIDER_MISALIGN);
- skb->protocol = eth_type_trans(skb, netdev);
-
- /* checksum offload */
- skb_checksum_none_assert(skb);
- if (netdev->features & NETIF_F_RXCSUM) {
- if ( ( (data_status & SPIDER_NET_DATA_STATUS_CKSUM_MASK) ==
- SPIDER_NET_DATA_STATUS_CKSUM_MASK) &&
- !(data_error & SPIDER_NET_DATA_ERR_CKSUM_MASK))
- skb->ip_summed = CHECKSUM_UNNECESSARY;
- }
-
- if (data_status & SPIDER_NET_VLAN_PACKET) {
- /* further enhancements: HW-accel VLAN */
- }
-
- /* update netdevice statistics */
- netdev->stats.rx_packets++;
- netdev->stats.rx_bytes += skb->len;
-
- /* pass skb up to stack */
- netif_receive_skb(skb);
-}
-
-static void show_rx_chain(struct spider_net_card *card)
-{
- struct spider_net_descr_chain *chain = &card->rx_chain;
- struct spider_net_descr *start= chain->tail;
- struct spider_net_descr *descr= start;
- struct spider_net_hw_descr *hwd = start->hwdescr;
- struct device *dev = &card->netdev->dev;
- u32 curr_desc, next_desc;
- int status;
-
- int tot = 0;
- int cnt = 0;
- int off = start - chain->ring;
- int cstat = hwd->dmac_cmd_status;
-
- dev_info(dev, "Total number of descrs=%d\n",
- chain->num_desc);
- dev_info(dev, "Chain tail located at descr=%d, status=0x%x\n",
- off, cstat);
-
- curr_desc = spider_net_read_reg(card, SPIDER_NET_GDACTDPA);
- next_desc = spider_net_read_reg(card, SPIDER_NET_GDACNEXTDA);
-
- status = cstat;
- do
- {
- hwd = descr->hwdescr;
- off = descr - chain->ring;
- status = hwd->dmac_cmd_status;
-
- if (descr == chain->head)
- dev_info(dev, "Chain head is at %d, head status=0x%x\n",
- off, status);
-
- if (curr_desc == descr->bus_addr)
- dev_info(dev, "HW curr desc (GDACTDPA) is at %d, status=0x%x\n",
- off, status);
-
- if (next_desc == descr->bus_addr)
- dev_info(dev, "HW next desc (GDACNEXTDA) is at %d, status=0x%x\n",
- off, status);
-
- if (hwd->next_descr_addr == 0)
- dev_info(dev, "chain is cut at %d\n", off);
-
- if (cstat != status) {
- int from = (chain->num_desc + off - cnt) % chain->num_desc;
- int to = (chain->num_desc + off - 1) % chain->num_desc;
- dev_info(dev, "Have %d (from %d to %d) descrs "
- "with stat=0x%08x\n", cnt, from, to, cstat);
- cstat = status;
- cnt = 0;
- }
-
- cnt ++;
- tot ++;
- descr = descr->next;
- } while (descr != start);
-
- dev_info(dev, "Last %d descrs with stat=0x%08x "
- "for a total of %d descrs\n", cnt, cstat, tot);
-
-#ifdef DEBUG
- /* Now dump the whole ring */
- descr = start;
- do
- {
- struct spider_net_hw_descr *hwd = descr->hwdescr;
- status = spider_net_get_descr_status(hwd);
- cnt = descr - chain->ring;
- dev_info(dev, "Descr %d stat=0x%08x skb=%p\n",
- cnt, status, descr->skb);
- dev_info(dev, "bus addr=%08x buf addr=%08x sz=%d\n",
- descr->bus_addr, hwd->buf_addr, hwd->buf_size);
- dev_info(dev, "next=%08x result sz=%d valid sz=%d\n",
- hwd->next_descr_addr, hwd->result_size,
- hwd->valid_size);
- dev_info(dev, "dmac=%08x data stat=%08x data err=%08x\n",
- hwd->dmac_cmd_status, hwd->data_status,
- hwd->data_error);
- dev_info(dev, "\n");
-
- descr = descr->next;
- } while (descr != start);
-#endif
-
-}
-
-/**
- * spider_net_resync_head_ptr - Advance head ptr past empty descrs
- * @card: card structure
- *
- * If the driver fails to keep up and empty the queue, then the
- * hardware wil run out of room to put incoming packets. This
- * will cause the hardware to skip descrs that are full (instead
- * of halting/retrying). Thus, once the driver runs, it wil need
- * to "catch up" to where the hardware chain pointer is at.
- */
-static void spider_net_resync_head_ptr(struct spider_net_card *card)
-{
- unsigned long flags;
- struct spider_net_descr_chain *chain = &card->rx_chain;
- struct spider_net_descr *descr;
- int i, status;
-
- /* Advance head pointer past any empty descrs */
- descr = chain->head;
- status = spider_net_get_descr_status(descr->hwdescr);
-
- if (status == SPIDER_NET_DESCR_NOT_IN_USE)
- return;
-
- spin_lock_irqsave(&chain->lock, flags);
-
- descr = chain->head;
- status = spider_net_get_descr_status(descr->hwdescr);
- for (i=0; i<chain->num_desc; i++) {
- if (status != SPIDER_NET_DESCR_CARDOWNED) break;
- descr = descr->next;
- status = spider_net_get_descr_status(descr->hwdescr);
- }
- chain->head = descr;
-
- spin_unlock_irqrestore(&chain->lock, flags);
-}
-
-static int spider_net_resync_tail_ptr(struct spider_net_card *card)
-{
- struct spider_net_descr_chain *chain = &card->rx_chain;
- struct spider_net_descr *descr;
- int i, status;
-
- /* Advance tail pointer past any empty and reaped descrs */
- descr = chain->tail;
- status = spider_net_get_descr_status(descr->hwdescr);
-
- for (i=0; i<chain->num_desc; i++) {
- if ((status != SPIDER_NET_DESCR_CARDOWNED) &&
- (status != SPIDER_NET_DESCR_NOT_IN_USE)) break;
- descr = descr->next;
- status = spider_net_get_descr_status(descr->hwdescr);
- }
- chain->tail = descr;
-
- if ((i == chain->num_desc) || (i == 0))
- return 1;
- return 0;
-}
-
-/**
- * spider_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. This function is called
- * in softirq context, e.g. either bottom half from interrupt or
- * NAPI polling context.
- */
-static int
-spider_net_decode_one_descr(struct spider_net_card *card)
-{
- struct net_device *dev = card->netdev;
- struct spider_net_descr_chain *chain = &card->rx_chain;
- struct spider_net_descr *descr = chain->tail;
- struct spider_net_hw_descr *hwdescr = descr->hwdescr;
- u32 hw_buf_addr;
- int status;
-
- status = spider_net_get_descr_status(hwdescr);
-
- /* Nothing in the descriptor, or ring must be empty */
- if ((status == SPIDER_NET_DESCR_CARDOWNED) ||
- (status == SPIDER_NET_DESCR_NOT_IN_USE))
- return 0;
-
- /* descriptor definitively used -- move on tail */
- chain->tail = descr->next;
-
- /* unmap descriptor */
- hw_buf_addr = hwdescr->buf_addr;
- hwdescr->buf_addr = 0xffffffff;
- dma_unmap_single(&card->pdev->dev, hw_buf_addr, SPIDER_NET_MAX_FRAME,
- DMA_FROM_DEVICE);
-
- if ( (status == SPIDER_NET_DESCR_RESPONSE_ERROR) ||
- (status == SPIDER_NET_DESCR_PROTECTION_ERROR) ||
- (status == SPIDER_NET_DESCR_FORCE_END) ) {
- if (netif_msg_rx_err(card))
- dev_err(&dev->dev,
- "dropping RX descriptor with state %d\n", status);
- dev->stats.rx_dropped++;
- goto bad_desc;
- }
-
- if ( (status != SPIDER_NET_DESCR_COMPLETE) &&
- (status != SPIDER_NET_DESCR_FRAME_END) ) {
- if (netif_msg_rx_err(card))
- dev_err(&card->netdev->dev,
- "RX descriptor with unknown state %d\n", status);
- card->spider_stats.rx_desc_unk_state++;
- goto bad_desc;
- }
-
- /* The cases we'll throw away the packet immediately */
- if (hwdescr->data_error & SPIDER_NET_DESTROY_RX_FLAGS) {
- if (netif_msg_rx_err(card))
- dev_err(&card->netdev->dev,
- "error in received descriptor found, "
- "data_status=x%08x, data_error=x%08x\n",
- hwdescr->data_status, hwdescr->data_error);
- goto bad_desc;
- }
-
- if (hwdescr->dmac_cmd_status & SPIDER_NET_DESCR_BAD_STATUS) {
- dev_err(&card->netdev->dev, "bad status, cmd_status=x%08x\n",
- hwdescr->dmac_cmd_status);
- pr_err("buf_addr=x%08x\n", hw_buf_addr);
- pr_err("buf_size=x%08x\n", hwdescr->buf_size);
- pr_err("next_descr_addr=x%08x\n", hwdescr->next_descr_addr);
- pr_err("result_size=x%08x\n", hwdescr->result_size);
- pr_err("valid_size=x%08x\n", hwdescr->valid_size);
- pr_err("data_status=x%08x\n", hwdescr->data_status);
- pr_err("data_error=x%08x\n", hwdescr->data_error);
- pr_err("which=%ld\n", descr - card->rx_chain.ring);
-
- card->spider_stats.rx_desc_error++;
- goto bad_desc;
- }
-
- /* Ok, we've got a packet in descr */
- spider_net_pass_skb_up(descr, card);
- descr->skb = NULL;
- hwdescr->dmac_cmd_status = SPIDER_NET_DESCR_NOT_IN_USE;
- return 1;
-
-bad_desc:
- if (netif_msg_rx_err(card))
- show_rx_chain(card);
- dev_kfree_skb_irq(descr->skb);
- descr->skb = NULL;
- hwdescr->dmac_cmd_status = SPIDER_NET_DESCR_NOT_IN_USE;
- return 0;
-}
-
-/**
- * spider_net_poll - NAPI poll function called by the stack to return packets
- * @napi: napi 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.
- *
- * spider_net_poll returns all packets from the rx descriptors to the stack
- * (using netif_receive_skb). If all/enough packets are up, the driver
- * reenables interrupts and returns 0. If not, 1 is returned.
- */
-static int spider_net_poll(struct napi_struct *napi, int budget)
-{
- struct spider_net_card *card = container_of(napi, struct spider_net_card, napi);
- int packets_done = 0;
-
- while (packets_done < budget) {
- if (!spider_net_decode_one_descr(card))
- break;
-
- packets_done++;
- }
-
- if ((packets_done == 0) && (card->num_rx_ints != 0)) {
- if (!spider_net_resync_tail_ptr(card))
- packets_done = budget;
- spider_net_resync_head_ptr(card);
- }
- card->num_rx_ints = 0;
-
- spider_net_refill_rx_chain(card);
- spider_net_enable_rxdmac(card);
-
- spider_net_cleanup_tx_ring(&card->tx_timer);
-
- /* if all packets are in the stack, enable interrupts and return 0 */
- /* if not, return 1 */
- if (packets_done < budget) {
- napi_complete_done(napi, packets_done);
- spider_net_rx_irq_on(card);
- card->ignore_rx_ramfull = 0;
- }
-
- return packets_done;
-}
-
-/**
- * spider_net_set_mac - sets the MAC of an interface
- * @netdev: interface device structure
- * @p: pointer to new MAC address
- *
- * Returns 0 on success, <0 on failure. Currently, we don't support this
- * and will always return EOPNOTSUPP.
- */
-static int
-spider_net_set_mac(struct net_device *netdev, void *p)
-{
- struct spider_net_card *card = netdev_priv(netdev);
- u32 macl, macu, regvalue;
- struct sockaddr *addr = p;
-
- if (!is_valid_ether_addr(addr->sa_data))
- return -EADDRNOTAVAIL;
-
- eth_hw_addr_set(netdev, addr->sa_data);
-
- /* switch off GMACTPE and GMACRPE */
- regvalue = spider_net_read_reg(card, SPIDER_NET_GMACOPEMD);
- regvalue &= ~((1 << 5) | (1 << 6));
- spider_net_write_reg(card, SPIDER_NET_GMACOPEMD, regvalue);
-
- /* write mac */
- macu = (netdev->dev_addr[0]<<24) + (netdev->dev_addr[1]<<16) +
- (netdev->dev_addr[2]<<8) + (netdev->dev_addr[3]);
- macl = (netdev->dev_addr[4]<<8) + (netdev->dev_addr[5]);
- spider_net_write_reg(card, SPIDER_NET_GMACUNIMACU, macu);
- spider_net_write_reg(card, SPIDER_NET_GMACUNIMACL, macl);
-
- /* switch GMACTPE and GMACRPE back on */
- regvalue = spider_net_read_reg(card, SPIDER_NET_GMACOPEMD);
- regvalue |= ((1 << 5) | (1 << 6));
- spider_net_write_reg(card, SPIDER_NET_GMACOPEMD, regvalue);
-
- spider_net_set_promisc(card);
-
- return 0;
-}
-
-/**
- * spider_net_link_reset
- * @netdev: net device structure
- *
- * This is called when the PHY_LINK signal is asserted. For the blade this is
- * not connected so we should never get here.
- *
- */
-static void
-spider_net_link_reset(struct net_device *netdev)
-{
-
- struct spider_net_card *card = netdev_priv(netdev);
-
- del_timer_sync(&card->aneg_timer);
-
- /* clear interrupt, block further interrupts */
- spider_net_write_reg(card, SPIDER_NET_GMACST,
- spider_net_read_reg(card, SPIDER_NET_GMACST));
- spider_net_write_reg(card, SPIDER_NET_GMACINTEN, 0);
-
- /* reset phy and setup aneg */
- card->aneg_count = 0;
- card->medium = BCM54XX_COPPER;
- spider_net_setup_aneg(card);
- mod_timer(&card->aneg_timer, jiffies + SPIDER_NET_ANEG_TIMER);
-
-}
-
-/**
- * spider_net_handle_error_irq - handles errors raised by an interrupt
- * @card: card structure
- * @status_reg: interrupt status register 0 (GHIINT0STS)
- * @error_reg1: interrupt status register 1 (GHIINT1STS)
- * @error_reg2: interrupt status register 2 (GHIINT2STS)
- *
- * spider_net_handle_error_irq treats or ignores all error conditions
- * found when an interrupt is presented
- */
-static void
-spider_net_handle_error_irq(struct spider_net_card *card, u32 status_reg,
- u32 error_reg1, u32 error_reg2)
-{
- u32 i;
- int show_error = 1;
-
- /* check GHIINT0STS ************************************/
- if (status_reg)
- for (i = 0; i < 32; i++)
- if (status_reg & (1<<i))
- switch (i)
- {
- /* let error_reg1 and error_reg2 evaluation decide, what to do
- case SPIDER_NET_PHYINT:
- case SPIDER_NET_GMAC2INT:
- case SPIDER_NET_GMAC1INT:
- case SPIDER_NET_GFIFOINT:
- case SPIDER_NET_DMACINT:
- case SPIDER_NET_GSYSINT:
- break; */
-
- case SPIDER_NET_GIPSINT:
- show_error = 0;
- break;
-
- case SPIDER_NET_GPWOPCMPINT:
- /* PHY write operation completed */
- show_error = 0;
- break;
- case SPIDER_NET_GPROPCMPINT:
- /* PHY read operation completed */
- /* we don't use semaphores, as we poll for the completion
- * of the read operation in spider_net_read_phy. Should take
- * about 50 us
- */
- show_error = 0;
- break;
- case SPIDER_NET_GPWFFINT:
- /* PHY command queue full */
- if (netif_msg_intr(card))
- dev_err(&card->netdev->dev, "PHY write queue full\n");
- show_error = 0;
- break;
-
- /* case SPIDER_NET_GRMDADRINT: not used. print a message */
- /* case SPIDER_NET_GRMARPINT: not used. print a message */
- /* case SPIDER_NET_GRMMPINT: not used. print a message */
-
- case SPIDER_NET_GDTDEN0INT:
- /* someone has set TX_DMA_EN to 0 */
- show_error = 0;
- break;
-
- case SPIDER_NET_GDDDEN0INT:
- case SPIDER_NET_GDCDEN0INT:
- case SPIDER_NET_GDBDEN0INT:
- case SPIDER_NET_GDADEN0INT:
- /* someone has set RX_DMA_EN to 0 */
- show_error = 0;
- break;
-
- /* RX interrupts */
- case SPIDER_NET_GDDFDCINT:
- case SPIDER_NET_GDCFDCINT:
- case SPIDER_NET_GDBFDCINT:
- case SPIDER_NET_GDAFDCINT:
- /* case SPIDER_NET_GDNMINT: not used. print a message */
- /* case SPIDER_NET_GCNMINT: not used. print a message */
- /* case SPIDER_NET_GBNMINT: not used. print a message */
- /* case SPIDER_NET_GANMINT: not used. print a message */
- /* case SPIDER_NET_GRFNMINT: not used. print a message */
- show_error = 0;
- break;
-
- /* TX interrupts */
- case SPIDER_NET_GDTFDCINT:
- show_error = 0;
- break;
- case SPIDER_NET_GTTEDINT:
- show_error = 0;
- break;
- case SPIDER_NET_GDTDCEINT:
- /* chain end. If a descriptor should be sent, kick off
- * tx dma
- if (card->tx_chain.tail != card->tx_chain.head)
- spider_net_kick_tx_dma(card);
- */
- show_error = 0;
- break;
-
- /* case SPIDER_NET_G1TMCNTINT: not used. print a message */
- /* case SPIDER_NET_GFREECNTINT: not used. print a message */
- }
-
- /* check GHIINT1STS ************************************/
- if (error_reg1)
- for (i = 0; i < 32; i++)
- if (error_reg1 & (1<<i))
- switch (i)
- {
- case SPIDER_NET_GTMFLLINT:
- /* TX RAM full may happen on a usual case.
- * Logging is not needed.
- */
- show_error = 0;
- break;
- case SPIDER_NET_GRFDFLLINT:
- case SPIDER_NET_GRFCFLLINT:
- case SPIDER_NET_GRFBFLLINT:
- case SPIDER_NET_GRFAFLLINT:
- case SPIDER_NET_GRMFLLINT:
- /* Could happen when rx chain is full */
- if (card->ignore_rx_ramfull == 0) {
- card->ignore_rx_ramfull = 1;
- spider_net_resync_head_ptr(card);
- spider_net_refill_rx_chain(card);
- spider_net_enable_rxdmac(card);
- card->num_rx_ints ++;
- napi_schedule(&card->napi);
- }
- show_error = 0;
- break;
-
- /* case SPIDER_NET_GTMSHTINT: problem, print a message */
- case SPIDER_NET_GDTINVDINT:
- /* allrighty. tx from previous descr ok */
- show_error = 0;
- break;
-
- /* chain end */
- case SPIDER_NET_GDDDCEINT:
- case SPIDER_NET_GDCDCEINT:
- case SPIDER_NET_GDBDCEINT:
- case SPIDER_NET_GDADCEINT:
- spider_net_resync_head_ptr(card);
- spider_net_refill_rx_chain(card);
- spider_net_enable_rxdmac(card);
- card->num_rx_ints ++;
- napi_schedule(&card->napi);
- show_error = 0;
- break;
-
- /* invalid descriptor */
- case SPIDER_NET_GDDINVDINT:
- case SPIDER_NET_GDCINVDINT:
- case SPIDER_NET_GDBINVDINT:
- case SPIDER_NET_GDAINVDINT:
- /* Could happen when rx chain is full */
- spider_net_resync_head_ptr(card);
- spider_net_refill_rx_chain(card);
- spider_net_enable_rxdmac(card);
- card->num_rx_ints ++;
- napi_schedule(&card->napi);
- show_error = 0;
- break;
-
- /* case SPIDER_NET_GDTRSERINT: problem, print a message */
- /* case SPIDER_NET_GDDRSERINT: problem, print a message */
- /* case SPIDER_NET_GDCRSERINT: problem, print a message */
- /* case SPIDER_NET_GDBRSERINT: problem, print a message */
- /* case SPIDER_NET_GDARSERINT: problem, print a message */
- /* case SPIDER_NET_GDSERINT: problem, print a message */
- /* case SPIDER_NET_GDTPTERINT: problem, print a message */
- /* case SPIDER_NET_GDDPTERINT: problem, print a message */
- /* case SPIDER_NET_GDCPTERINT: problem, print a message */
- /* case SPIDER_NET_GDBPTERINT: problem, print a message */
- /* case SPIDER_NET_GDAPTERINT: problem, print a message */
- default:
- show_error = 1;
- break;
- }
-
- /* check GHIINT2STS ************************************/
- if (error_reg2)
- for (i = 0; i < 32; i++)
- if (error_reg2 & (1<<i))
- switch (i)
- {
- /* there is nothing we can (want to) do at this time. Log a
- * message, we can switch on and off the specific values later on
- case SPIDER_NET_GPROPERINT:
- case SPIDER_NET_GMCTCRSNGINT:
- case SPIDER_NET_GMCTLCOLINT:
- case SPIDER_NET_GMCTTMOTINT:
- case SPIDER_NET_GMCRCAERINT:
- case SPIDER_NET_GMCRCALERINT:
- case SPIDER_NET_GMCRALNERINT:
- case SPIDER_NET_GMCROVRINT:
- case SPIDER_NET_GMCRRNTINT:
- case SPIDER_NET_GMCRRXERINT:
- case SPIDER_NET_GTITCSERINT:
- case SPIDER_NET_GTIFMTERINT:
- case SPIDER_NET_GTIPKTRVKINT:
- case SPIDER_NET_GTISPINGINT:
- case SPIDER_NET_GTISADNGINT:
- case SPIDER_NET_GTISPDNGINT:
- case SPIDER_NET_GRIFMTERINT:
- case SPIDER_NET_GRIPKTRVKINT:
- case SPIDER_NET_GRISPINGINT:
- case SPIDER_NET_GRISADNGINT:
- case SPIDER_NET_GRISPDNGINT:
- break;
- */
- default:
- break;
- }
-
- if ((show_error) && (netif_msg_intr(card)) && net_ratelimit())
- dev_err(&card->netdev->dev, "Error interrupt, GHIINT0STS = 0x%08x, "
- "GHIINT1STS = 0x%08x, GHIINT2STS = 0x%08x\n",
- status_reg, error_reg1, error_reg2);
-
- /* clear interrupt sources */
- spider_net_write_reg(card, SPIDER_NET_GHIINT1STS, error_reg1);
- spider_net_write_reg(card, SPIDER_NET_GHIINT2STS, error_reg2);
-}
-
-/**
- * spider_net_interrupt - interrupt handler for spider_net
- * @irq: interrupt number
- * @ptr: pointer to net_device
- *
- * returns IRQ_HANDLED, if interrupt was for driver, or IRQ_NONE, if no
- * interrupt found raised by card.
- *
- * This is the interrupt handler, that turns off
- * interrupts for this device and makes the stack poll the driver
- */
-static irqreturn_t
-spider_net_interrupt(int irq, void *ptr)
-{
- struct net_device *netdev = ptr;
- struct spider_net_card *card = netdev_priv(netdev);
- u32 status_reg, error_reg1, error_reg2;
-
- status_reg = spider_net_read_reg(card, SPIDER_NET_GHIINT0STS);
- error_reg1 = spider_net_read_reg(card, SPIDER_NET_GHIINT1STS);
- error_reg2 = spider_net_read_reg(card, SPIDER_NET_GHIINT2STS);
-
- if (!(status_reg & SPIDER_NET_INT0_MASK_VALUE) &&
- !(error_reg1 & SPIDER_NET_INT1_MASK_VALUE) &&
- !(error_reg2 & SPIDER_NET_INT2_MASK_VALUE))
- return IRQ_NONE;
-
- if (status_reg & SPIDER_NET_RXINT ) {
- spider_net_rx_irq_off(card);
- napi_schedule(&card->napi);
- card->num_rx_ints ++;
- }
- if (status_reg & SPIDER_NET_TXINT)
- napi_schedule(&card->napi);
-
- if (status_reg & SPIDER_NET_LINKINT)
- spider_net_link_reset(netdev);
-
- if (status_reg & SPIDER_NET_ERRINT )
- spider_net_handle_error_irq(card, status_reg,
- error_reg1, error_reg2);
-
- /* clear interrupt sources */
- spider_net_write_reg(card, SPIDER_NET_GHIINT0STS, status_reg);
-
- return IRQ_HANDLED;
-}
-
-#ifdef CONFIG_NET_POLL_CONTROLLER
-/**
- * spider_net_poll_controller - artificial interrupt for netconsole etc.
- * @netdev: interface device structure
- *
- * see Documentation/networking/netconsole.rst
- */
-static void
-spider_net_poll_controller(struct net_device *netdev)
-{
- disable_irq(netdev->irq);
- spider_net_interrupt(netdev->irq, netdev);
- enable_irq(netdev->irq);
-}
-#endif /* CONFIG_NET_POLL_CONTROLLER */
-
-/**
- * spider_net_enable_interrupts - enable interrupts
- * @card: card structure
- *
- * spider_net_enable_interrupt enables several interrupts
- */
-static void
-spider_net_enable_interrupts(struct spider_net_card *card)
-{
- spider_net_write_reg(card, SPIDER_NET_GHIINT0MSK,
- SPIDER_NET_INT0_MASK_VALUE);
- spider_net_write_reg(card, SPIDER_NET_GHIINT1MSK,
- SPIDER_NET_INT1_MASK_VALUE);
- spider_net_write_reg(card, SPIDER_NET_GHIINT2MSK,
- SPIDER_NET_INT2_MASK_VALUE);
-}
-
-/**
- * spider_net_disable_interrupts - disable interrupts
- * @card: card structure
- *
- * spider_net_disable_interrupts disables all the interrupts
- */
-static void
-spider_net_disable_interrupts(struct spider_net_card *card)
-{
- spider_net_write_reg(card, SPIDER_NET_GHIINT0MSK, 0);
- spider_net_write_reg(card, SPIDER_NET_GHIINT1MSK, 0);
- spider_net_write_reg(card, SPIDER_NET_GHIINT2MSK, 0);
- spider_net_write_reg(card, SPIDER_NET_GMACINTEN, 0);
-}
-
-/**
- * spider_net_init_card - initializes the card
- * @card: card structure
- *
- * spider_net_init_card initializes the card so that other registers can
- * be used
- */
-static void
-spider_net_init_card(struct spider_net_card *card)
-{
- spider_net_write_reg(card, SPIDER_NET_CKRCTRL,
- SPIDER_NET_CKRCTRL_STOP_VALUE);
-
- spider_net_write_reg(card, SPIDER_NET_CKRCTRL,
- SPIDER_NET_CKRCTRL_RUN_VALUE);
-
- /* trigger ETOMOD signal */
- spider_net_write_reg(card, SPIDER_NET_GMACOPEMD,
- spider_net_read_reg(card, SPIDER_NET_GMACOPEMD) | 0x4);
-
- spider_net_disable_interrupts(card);
-}
-
-/**
- * spider_net_enable_card - enables the card by setting all kinds of regs
- * @card: card structure
- *
- * spider_net_enable_card sets a lot of SMMIO registers to enable the device
- */
-static void
-spider_net_enable_card(struct spider_net_card *card)
-{
- int i;
- /* the following array consists of (register),(value) pairs
- * that are set in this function. A register of 0 ends the list
- */
- u32 regs[][2] = {
- { SPIDER_NET_GRESUMINTNUM, 0 },
- { SPIDER_NET_GREINTNUM, 0 },
-
- /* set interrupt frame number registers */
- /* clear the single DMA engine registers first */
- { SPIDER_NET_GFAFRMNUM, SPIDER_NET_GFXFRAMES_VALUE },
- { SPIDER_NET_GFBFRMNUM, SPIDER_NET_GFXFRAMES_VALUE },
- { SPIDER_NET_GFCFRMNUM, SPIDER_NET_GFXFRAMES_VALUE },
- { SPIDER_NET_GFDFRMNUM, SPIDER_NET_GFXFRAMES_VALUE },
- /* then set, what we really need */
- { SPIDER_NET_GFFRMNUM, SPIDER_NET_FRAMENUM_VALUE },
-
- /* timer counter registers and stuff */
- { SPIDER_NET_GFREECNNUM, 0 },
- { SPIDER_NET_GONETIMENUM, 0 },
- { SPIDER_NET_GTOUTFRMNUM, 0 },
-
- /* RX mode setting */
- { SPIDER_NET_GRXMDSET, SPIDER_NET_RXMODE_VALUE },
- /* TX mode setting */
- { SPIDER_NET_GTXMDSET, SPIDER_NET_TXMODE_VALUE },
- /* IPSEC mode setting */
- { SPIDER_NET_GIPSECINIT, SPIDER_NET_IPSECINIT_VALUE },
-
- { SPIDER_NET_GFTRESTRT, SPIDER_NET_RESTART_VALUE },
-
- { SPIDER_NET_GMRWOLCTRL, 0 },
- { SPIDER_NET_GTESTMD, 0x10000000 },
- { SPIDER_NET_GTTQMSK, 0x00400040 },
-
- { SPIDER_NET_GMACINTEN, 0 },
-
- /* flow control stuff */
- { SPIDER_NET_GMACAPAUSE, SPIDER_NET_MACAPAUSE_VALUE },
- { SPIDER_NET_GMACTXPAUSE, SPIDER_NET_TXPAUSE_VALUE },
-
- { SPIDER_NET_GMACBSTLMT, SPIDER_NET_BURSTLMT_VALUE },
- { 0, 0}
- };
-
- i = 0;
- while (regs[i][0]) {
- spider_net_write_reg(card, regs[i][0], regs[i][1]);
- i++;
- }
-
- /* clear unicast filter table entries 1 to 14 */
- for (i = 1; i <= 14; i++) {
- spider_net_write_reg(card,
- SPIDER_NET_GMRUAFILnR + i * 8,
- 0x00080000);
- spider_net_write_reg(card,
- SPIDER_NET_GMRUAFILnR + i * 8 + 4,
- 0x00000000);
- }
-
- spider_net_write_reg(card, SPIDER_NET_GMRUA0FIL15R, 0x08080000);
-
- spider_net_write_reg(card, SPIDER_NET_ECMODE, SPIDER_NET_ECMODE_VALUE);
-
- /* set chain tail address for RX chains and
- * enable DMA
- */
- spider_net_enable_rxchtails(card);
- spider_net_enable_rxdmac(card);
-
- spider_net_write_reg(card, SPIDER_NET_GRXDMAEN, SPIDER_NET_WOL_VALUE);
-
- spider_net_write_reg(card, SPIDER_NET_GMACLENLMT,
- SPIDER_NET_LENLMT_VALUE);
- spider_net_write_reg(card, SPIDER_NET_GMACOPEMD,
- SPIDER_NET_OPMODE_VALUE);
-
- spider_net_write_reg(card, SPIDER_NET_GDTDMACCNTR,
- SPIDER_NET_GDTBSTA);
-}
-
-/**
- * spider_net_download_firmware - loads firmware into the adapter
- * @card: card structure
- * @firmware_ptr: pointer to firmware data
- *
- * spider_net_download_firmware loads the firmware data into the
- * adapter. It assumes the length etc. to be allright.
- */
-static int
-spider_net_download_firmware(struct spider_net_card *card,
- const void *firmware_ptr)
-{
- int sequencer, i;
- const u32 *fw_ptr = firmware_ptr;
-
- /* stop sequencers */
- spider_net_write_reg(card, SPIDER_NET_GSINIT,
- SPIDER_NET_STOP_SEQ_VALUE);
-
- for (sequencer = 0; sequencer < SPIDER_NET_FIRMWARE_SEQS;
- sequencer++) {
- spider_net_write_reg(card,
- SPIDER_NET_GSnPRGADR + sequencer * 8, 0);
- for (i = 0; i < SPIDER_NET_FIRMWARE_SEQWORDS; i++) {
- spider_net_write_reg(card, SPIDER_NET_GSnPRGDAT +
- sequencer * 8, *fw_ptr);
- fw_ptr++;
- }
- }
-
- if (spider_net_read_reg(card, SPIDER_NET_GSINIT))
- return -EIO;
-
- spider_net_write_reg(card, SPIDER_NET_GSINIT,
- SPIDER_NET_RUN_SEQ_VALUE);
-
- return 0;
-}
-
-/**
- * spider_net_init_firmware - reads in firmware parts
- * @card: card structure
- *
- * Returns 0 on success, <0 on failure
- *
- * spider_net_init_firmware opens the sequencer firmware and does some basic
- * checks. This function opens and releases the firmware structure. A call
- * to download the firmware is performed before the release.
- *
- * Firmware format
- * ===============
- * spider_fw.bin is expected to be a file containing 6*1024*4 bytes, 4k being
- * the program for each sequencer. Use the command
- * tail -q -n +2 Seq_code1_0x088.txt Seq_code2_0x090.txt \
- * Seq_code3_0x098.txt Seq_code4_0x0A0.txt Seq_code5_0x0A8.txt \
- * Seq_code6_0x0B0.txt | xxd -r -p -c4 > spider_fw.bin
- *
- * to generate spider_fw.bin, if you have sequencer programs with something
- * like the following contents for each sequencer:
- * <ONE LINE COMMENT>
- * <FIRST 4-BYTES-WORD FOR SEQUENCER>
- * <SECOND 4-BYTES-WORD FOR SEQUENCER>
- * ...
- * <1024th 4-BYTES-WORD FOR SEQUENCER>
- */
-static int
-spider_net_init_firmware(struct spider_net_card *card)
-{
- struct firmware *firmware = NULL;
- struct device_node *dn;
- const u8 *fw_prop = NULL;
- int err = -ENOENT;
- int fw_size;
-
- if (request_firmware((const struct firmware **)&firmware,
- SPIDER_NET_FIRMWARE_NAME, &card->pdev->dev) == 0) {
- if ( (firmware->size != SPIDER_NET_FIRMWARE_LEN) &&
- netif_msg_probe(card) ) {
- dev_err(&card->netdev->dev,
- "Incorrect size of spidernet firmware in " \
- "filesystem. Looking in host firmware...\n");
- goto try_host_fw;
- }
- err = spider_net_download_firmware(card, firmware->data);
-
- release_firmware(firmware);
- if (err)
- goto try_host_fw;
-
- goto done;
- }
-
-try_host_fw:
- dn = pci_device_to_OF_node(card->pdev);
- if (!dn)
- goto out_err;
-
- fw_prop = of_get_property(dn, "firmware", &fw_size);
- if (!fw_prop)
- goto out_err;
-
- if ( (fw_size != SPIDER_NET_FIRMWARE_LEN) &&
- netif_msg_probe(card) ) {
- dev_err(&card->netdev->dev,
- "Incorrect size of spidernet firmware in host firmware\n");
- goto done;
- }
-
- err = spider_net_download_firmware(card, fw_prop);
-
-done:
- return err;
-out_err:
- if (netif_msg_probe(card))
- dev_err(&card->netdev->dev,
- "Couldn't find spidernet firmware in filesystem " \
- "or host firmware\n");
- return err;
-}
-
-/**
- * spider_net_open - called upon ifonfig up
- * @netdev: interface device structure
- *
- * returns 0 on success, <0 on failure
- *
- * spider_net_open allocates all the descriptors and memory needed for
- * operation, sets up multicast list and enables interrupts
- */
-int
-spider_net_open(struct net_device *netdev)
-{
- struct spider_net_card *card = netdev_priv(netdev);
- int result;
-
- result = spider_net_init_firmware(card);
- if (result)
- goto init_firmware_failed;
-
- /* start probing with copper */
- card->aneg_count = 0;
- card->medium = BCM54XX_COPPER;
- spider_net_setup_aneg(card);
- if (card->phy.def->phy_id)
- mod_timer(&card->aneg_timer, jiffies + SPIDER_NET_ANEG_TIMER);
-
- result = spider_net_init_chain(card, &card->tx_chain);
- if (result)
- goto alloc_tx_failed;
- card->low_watermark = NULL;
-
- result = spider_net_init_chain(card, &card->rx_chain);
- if (result)
- goto alloc_rx_failed;
-
- /* Allocate rx skbs */
- result = spider_net_alloc_rx_skbs(card);
- if (result)
- goto alloc_skbs_failed;
-
- spider_net_set_multi(netdev);
-
- /* further enhancement: setup hw vlan, if needed */
-
- result = -EBUSY;
- if (request_irq(netdev->irq, spider_net_interrupt,
- IRQF_SHARED, netdev->name, netdev))
- goto register_int_failed;
-
- spider_net_enable_card(card);
-
- netif_start_queue(netdev);
- netif_carrier_on(netdev);
- napi_enable(&card->napi);
-
- spider_net_enable_interrupts(card);
-
- return 0;
-
-register_int_failed:
- spider_net_free_rx_chain_contents(card);
-alloc_skbs_failed:
- spider_net_free_chain(card, &card->rx_chain);
-alloc_rx_failed:
- spider_net_free_chain(card, &card->tx_chain);
-alloc_tx_failed:
- del_timer_sync(&card->aneg_timer);
-init_firmware_failed:
- return result;
-}
-
-/**
- * spider_net_link_phy
- * @t: timer context used to obtain the pointer to net card data structure
- */
-static void spider_net_link_phy(struct timer_list *t)
-{
- struct spider_net_card *card = from_timer(card, t, aneg_timer);
- struct mii_phy *phy = &card->phy;
-
- /* if link didn't come up after SPIDER_NET_ANEG_TIMEOUT tries, setup phy again */
- if (card->aneg_count > SPIDER_NET_ANEG_TIMEOUT) {
-
- pr_debug("%s: link is down trying to bring it up\n",
- card->netdev->name);
-
- switch (card->medium) {
- case BCM54XX_COPPER:
- /* enable fiber with autonegotiation first */
- if (phy->def->ops->enable_fiber)
- phy->def->ops->enable_fiber(phy, 1);
- card->medium = BCM54XX_FIBER;
- break;
-
- case BCM54XX_FIBER:
- /* fiber didn't come up, try to disable fiber autoneg */
- if (phy->def->ops->enable_fiber)
- phy->def->ops->enable_fiber(phy, 0);
- card->medium = BCM54XX_UNKNOWN;
- break;
-
- case BCM54XX_UNKNOWN:
- /* copper, fiber with and without failed,
- * retry from beginning
- */
- spider_net_setup_aneg(card);
- card->medium = BCM54XX_COPPER;
- break;
- }
-
- card->aneg_count = 0;
- mod_timer(&card->aneg_timer, jiffies + SPIDER_NET_ANEG_TIMER);
- return;
- }
-
- /* link still not up, try again later */
- if (!(phy->def->ops->poll_link(phy))) {
- card->aneg_count++;
- mod_timer(&card->aneg_timer, jiffies + SPIDER_NET_ANEG_TIMER);
- return;
- }
-
- /* link came up, get abilities */
- phy->def->ops->read_link(phy);
-
- spider_net_write_reg(card, SPIDER_NET_GMACST,
- spider_net_read_reg(card, SPIDER_NET_GMACST));
- spider_net_write_reg(card, SPIDER_NET_GMACINTEN, 0x4);
-
- if (phy->speed == 1000)
- spider_net_write_reg(card, SPIDER_NET_GMACMODE, 0x00000001);
- else
- spider_net_write_reg(card, SPIDER_NET_GMACMODE, 0);
-
- card->aneg_count = 0;
-
- pr_info("%s: link up, %i Mbps, %s-duplex %sautoneg.\n",
- card->netdev->name, phy->speed,
- phy->duplex == 1 ? "Full" : "Half",
- phy->autoneg == 1 ? "" : "no ");
-}
-
-/**
- * spider_net_setup_phy - setup PHY
- * @card: card structure
- *
- * returns 0 on success, <0 on failure
- *
- * spider_net_setup_phy is used as part of spider_net_probe.
- **/
-static int
-spider_net_setup_phy(struct spider_net_card *card)
-{
- struct mii_phy *phy = &card->phy;
-
- spider_net_write_reg(card, SPIDER_NET_GDTDMASEL,
- SPIDER_NET_DMASEL_VALUE);
- spider_net_write_reg(card, SPIDER_NET_GPCCTRL,
- SPIDER_NET_PHY_CTRL_VALUE);
-
- phy->dev = card->netdev;
- phy->mdio_read = spider_net_read_phy;
- phy->mdio_write = spider_net_write_phy;
-
- for (phy->mii_id = 1; phy->mii_id <= 31; phy->mii_id++) {
- unsigned short id;
- id = spider_net_read_phy(card->netdev, phy->mii_id, MII_BMSR);
- if (id != 0x0000 && id != 0xffff) {
- if (!sungem_phy_probe(phy, phy->mii_id)) {
- pr_info("Found %s.\n", phy->def->name);
- break;
- }
- }
- }
-
- return 0;
-}
-
-/**
- * spider_net_workaround_rxramfull - work around firmware bug
- * @card: card structure
- *
- * no return value
- **/
-static void
-spider_net_workaround_rxramfull(struct spider_net_card *card)
-{
- int i, sequencer = 0;
-
- /* cancel reset */
- spider_net_write_reg(card, SPIDER_NET_CKRCTRL,
- SPIDER_NET_CKRCTRL_RUN_VALUE);
-
- /* empty sequencer data */
- for (sequencer = 0; sequencer < SPIDER_NET_FIRMWARE_SEQS;
- sequencer++) {
- spider_net_write_reg(card, SPIDER_NET_GSnPRGADR +
- sequencer * 8, 0x0);
- for (i = 0; i < SPIDER_NET_FIRMWARE_SEQWORDS; i++) {
- spider_net_write_reg(card, SPIDER_NET_GSnPRGDAT +
- sequencer * 8, 0x0);
- }
- }
-
- /* set sequencer operation */
- spider_net_write_reg(card, SPIDER_NET_GSINIT, 0x000000fe);
-
- /* reset */
- spider_net_write_reg(card, SPIDER_NET_CKRCTRL,
- SPIDER_NET_CKRCTRL_STOP_VALUE);
-}
-
-/**
- * spider_net_stop - called upon ifconfig down
- * @netdev: interface device structure
- *
- * always returns 0
- */
-int
-spider_net_stop(struct net_device *netdev)
-{
- struct spider_net_card *card = netdev_priv(netdev);
-
- napi_disable(&card->napi);
- netif_carrier_off(netdev);
- netif_stop_queue(netdev);
- del_timer_sync(&card->tx_timer);
- del_timer_sync(&card->aneg_timer);
-
- spider_net_disable_interrupts(card);
-
- free_irq(netdev->irq, netdev);
-
- spider_net_write_reg(card, SPIDER_NET_GDTDMACCNTR,
- SPIDER_NET_DMA_TX_FEND_VALUE);
-
- /* turn off DMA, force end */
- spider_net_disable_rxdmac(card);
-
- /* release chains */
- spider_net_release_tx_chain(card, 1);
- spider_net_free_rx_chain_contents(card);
-
- spider_net_free_chain(card, &card->tx_chain);
- spider_net_free_chain(card, &card->rx_chain);
-
- return 0;
-}
-
-/**
- * spider_net_tx_timeout_task - task scheduled by the watchdog timeout
- * function (to be called not under interrupt status)
- * @work: work context used to obtain the pointer to net card data structure
- *
- * called as task when tx hangs, resets interface (if interface is up)
- */
-static void
-spider_net_tx_timeout_task(struct work_struct *work)
-{
- struct spider_net_card *card =
- container_of(work, struct spider_net_card, tx_timeout_task);
- struct net_device *netdev = card->netdev;
-
- if (!(netdev->flags & IFF_UP))
- goto out;
-
- netif_device_detach(netdev);
- spider_net_stop(netdev);
-
- spider_net_workaround_rxramfull(card);
- spider_net_init_card(card);
-
- if (spider_net_setup_phy(card))
- goto out;
-
- spider_net_open(netdev);
- spider_net_kick_tx_dma(card);
- netif_device_attach(netdev);
-
-out:
- atomic_dec(&card->tx_timeout_task_counter);
-}
-
-/**
- * spider_net_tx_timeout - called when the tx timeout watchdog kicks in.
- * @netdev: interface device structure
- * @txqueue: unused
- *
- * called, if tx hangs. Schedules a task that resets the interface
- */
-static void
-spider_net_tx_timeout(struct net_device *netdev, unsigned int txqueue)
-{
- struct spider_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);
- card->spider_stats.tx_timeouts++;
-}
-
-static const struct net_device_ops spider_net_ops = {
- .ndo_open = spider_net_open,
- .ndo_stop = spider_net_stop,
- .ndo_start_xmit = spider_net_xmit,
- .ndo_set_rx_mode = spider_net_set_multi,
- .ndo_set_mac_address = spider_net_set_mac,
- .ndo_eth_ioctl = spider_net_do_ioctl,
- .ndo_tx_timeout = spider_net_tx_timeout,
- .ndo_validate_addr = eth_validate_addr,
- /* HW VLAN */
-#ifdef CONFIG_NET_POLL_CONTROLLER
- /* poll controller */
- .ndo_poll_controller = spider_net_poll_controller,
-#endif /* CONFIG_NET_POLL_CONTROLLER */
-};
-
-/**
- * spider_net_setup_netdev_ops - initialization of net_device operations
- * @netdev: net_device structure
- *
- * fills out function pointers in the net_device structure
- */
-static void
-spider_net_setup_netdev_ops(struct net_device *netdev)
-{
- netdev->netdev_ops = &spider_net_ops;
- netdev->watchdog_timeo = SPIDER_NET_WATCHDOG_TIMEOUT;
- /* ethtool ops */
- netdev->ethtool_ops = &spider_net_ethtool_ops;
-}
-
-/**
- * spider_net_setup_netdev - initialization of net_device
- * @card: card structure
- *
- * Returns 0 on success or <0 on failure
- *
- * spider_net_setup_netdev initializes the net_device structure
- **/
-static int
-spider_net_setup_netdev(struct spider_net_card *card)
-{
- int result;
- struct net_device *netdev = card->netdev;
- struct device_node *dn;
- struct sockaddr addr;
- const u8 *mac;
-
- SET_NETDEV_DEV(netdev, &card->pdev->dev);
-
- pci_set_drvdata(card->pdev, netdev);
-
- timer_setup(&card->tx_timer, spider_net_cleanup_tx_ring, 0);
- netdev->irq = card->pdev->irq;
-
- card->aneg_count = 0;
- timer_setup(&card->aneg_timer, spider_net_link_phy, 0);
-
- netif_napi_add(netdev, &card->napi, spider_net_poll);
-
- spider_net_setup_netdev_ops(netdev);
-
- netdev->hw_features = NETIF_F_RXCSUM | NETIF_F_IP_CSUM;
- if (SPIDER_NET_RX_CSUM_DEFAULT)
- netdev->features |= NETIF_F_RXCSUM;
- netdev->features |= NETIF_F_IP_CSUM;
- /* some time: NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX |
- * NETIF_F_HW_VLAN_CTAG_FILTER
- */
- netdev->lltx = true;
-
- /* MTU range: 64 - 2294 */
- netdev->min_mtu = SPIDER_NET_MIN_MTU;
- netdev->max_mtu = SPIDER_NET_MAX_MTU;
-
- netdev->irq = card->pdev->irq;
- card->num_rx_ints = 0;
- card->ignore_rx_ramfull = 0;
-
- dn = pci_device_to_OF_node(card->pdev);
- if (!dn)
- return -EIO;
-
- mac = of_get_property(dn, "local-mac-address", NULL);
- if (!mac)
- return -EIO;
- memcpy(addr.sa_data, mac, ETH_ALEN);
-
- result = spider_net_set_mac(netdev, &addr);
- if ((result) && (netif_msg_probe(card)))
- dev_err(&card->netdev->dev,
- "Failed to set MAC address: %i\n", result);
-
- result = register_netdev(netdev);
- if (result) {
- if (netif_msg_probe(card))
- dev_err(&card->netdev->dev,
- "Couldn't register net_device: %i\n", result);
- return result;
- }
-
- if (netif_msg_probe(card))
- pr_info("Initialized device %s.\n", netdev->name);
-
- return 0;
-}
-
-/**
- * spider_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 spider_net_card *
-spider_net_alloc_card(void)
-{
- struct net_device *netdev;
- struct spider_net_card *card;
-
- netdev = alloc_etherdev(struct_size(card, darray,
- size_add(tx_descriptors, rx_descriptors)));
- if (!netdev)
- return NULL;
-
- card = netdev_priv(netdev);
- card->netdev = netdev;
- card->msg_enable = SPIDER_NET_DEFAULT_MSG;
- INIT_WORK(&card->tx_timeout_task, spider_net_tx_timeout_task);
- init_waitqueue_head(&card->waitq);
- atomic_set(&card->tx_timeout_task_counter, 0);
-
- card->rx_chain.num_desc = rx_descriptors;
- card->rx_chain.ring = card->darray;
- card->tx_chain.num_desc = tx_descriptors;
- card->tx_chain.ring = card->darray + rx_descriptors;
-
- return card;
-}
-
-/**
- * spider_net_undo_pci_setup - releases PCI ressources
- * @card: card structure
- *
- * spider_net_undo_pci_setup releases the mapped regions
- */
-static void
-spider_net_undo_pci_setup(struct spider_net_card *card)
-{
- iounmap(card->regs);
- pci_release_regions(card->pdev);
-}
-
-/**
- * spider_net_setup_pci_dev - sets up the device in terms of PCI operations
- * @pdev: PCI device
- *
- * Returns the card structure or NULL if any errors occur
- *
- * spider_net_setup_pci_dev initializes pdev and together with the
- * functions called in spider_net_open configures the device so that
- * data can be transferred over it
- * The net_device structure is attached to the card structure, if the
- * function returns without error.
- **/
-static struct spider_net_card *
-spider_net_setup_pci_dev(struct pci_dev *pdev)
-{
- struct spider_net_card *card;
- unsigned long mmio_start, mmio_len;
-
- if (pci_enable_device(pdev)) {
- dev_err(&pdev->dev, "Couldn't enable PCI device\n");
- return NULL;
- }
-
- if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
- dev_err(&pdev->dev,
- "Couldn't find proper PCI device base address.\n");
- goto out_disable_dev;
- }
-
- if (pci_request_regions(pdev, spider_net_driver_name)) {
- dev_err(&pdev->dev,
- "Couldn't obtain PCI resources, aborting.\n");
- goto out_disable_dev;
- }
-
- pci_set_master(pdev);
-
- card = spider_net_alloc_card();
- if (!card) {
- dev_err(&pdev->dev,
- "Couldn't allocate net_device structure, aborting.\n");
- goto out_release_regions;
- }
- card->pdev = pdev;
-
- /* fetch base address and length of first resource */
- mmio_start = pci_resource_start(pdev, 0);
- mmio_len = pci_resource_len(pdev, 0);
-
- card->netdev->mem_start = mmio_start;
- card->netdev->mem_end = mmio_start + mmio_len;
- card->regs = ioremap(mmio_start, mmio_len);
-
- if (!card->regs) {
- dev_err(&pdev->dev,
- "Couldn't obtain PCI resources, aborting.\n");
- goto out_release_regions;
- }
-
- return card;
-
-out_release_regions:
- pci_release_regions(pdev);
-out_disable_dev:
- pci_disable_device(pdev);
- return NULL;
-}
-
-/**
- * spider_net_probe - initialization of a device
- * @pdev: PCI device
- * @ent: entry in the device id list
- *
- * Returns 0 on success, <0 on failure
- *
- * spider_net_probe initializes pdev and registers a net_device
- * structure for it. After that, the device can be ifconfig'ed up
- **/
-static int
-spider_net_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
-{
- int err = -EIO;
- struct spider_net_card *card;
-
- card = spider_net_setup_pci_dev(pdev);
- if (!card)
- goto out;
-
- spider_net_workaround_rxramfull(card);
- spider_net_init_card(card);
-
- err = spider_net_setup_phy(card);
- if (err)
- goto out_undo_pci;
-
- err = spider_net_setup_netdev(card);
- if (err)
- goto out_undo_pci;
-
- return 0;
-
-out_undo_pci:
- spider_net_undo_pci_setup(card);
- free_netdev(card->netdev);
-out:
- return err;
-}
-
-/**
- * spider_net_remove - removal of a device
- * @pdev: PCI device
- *
- * Returns 0 on success, <0 on failure
- *
- * spider_net_remove is called to remove the device and unregisters the
- * net_device
- **/
-static void
-spider_net_remove(struct pci_dev *pdev)
-{
- struct net_device *netdev;
- struct spider_net_card *card;
-
- netdev = pci_get_drvdata(pdev);
- card = netdev_priv(netdev);
-
- wait_event(card->waitq,
- atomic_read(&card->tx_timeout_task_counter) == 0);
-
- unregister_netdev(netdev);
-
- /* switch off card */
- spider_net_write_reg(card, SPIDER_NET_CKRCTRL,
- SPIDER_NET_CKRCTRL_STOP_VALUE);
- spider_net_write_reg(card, SPIDER_NET_CKRCTRL,
- SPIDER_NET_CKRCTRL_RUN_VALUE);
-
- spider_net_undo_pci_setup(card);
- free_netdev(netdev);
-}
-
-static struct pci_driver spider_net_driver = {
- .name = spider_net_driver_name,
- .id_table = spider_net_pci_tbl,
- .probe = spider_net_probe,
- .remove = spider_net_remove
-};
-
-/**
- * spider_net_init - init function when the driver is loaded
- *
- * spider_net_init registers the device driver
- */
-static int __init spider_net_init(void)
-{
- printk(KERN_INFO "Spidernet version %s.\n", VERSION);
-
- if (rx_descriptors < SPIDER_NET_RX_DESCRIPTORS_MIN) {
- rx_descriptors = SPIDER_NET_RX_DESCRIPTORS_MIN;
- pr_info("adjusting rx descriptors to %i.\n", rx_descriptors);
- }
- if (rx_descriptors > SPIDER_NET_RX_DESCRIPTORS_MAX) {
- rx_descriptors = SPIDER_NET_RX_DESCRIPTORS_MAX;
- pr_info("adjusting rx descriptors to %i.\n", rx_descriptors);
- }
- if (tx_descriptors < SPIDER_NET_TX_DESCRIPTORS_MIN) {
- tx_descriptors = SPIDER_NET_TX_DESCRIPTORS_MIN;
- pr_info("adjusting tx descriptors to %i.\n", tx_descriptors);
- }
- if (tx_descriptors > SPIDER_NET_TX_DESCRIPTORS_MAX) {
- tx_descriptors = SPIDER_NET_TX_DESCRIPTORS_MAX;
- pr_info("adjusting tx descriptors to %i.\n", tx_descriptors);
- }
-
- return pci_register_driver(&spider_net_driver);
-}
-
-/**
- * spider_net_cleanup - exit function when driver is unloaded
- *
- * spider_net_cleanup unregisters the device driver
- */
-static void __exit spider_net_cleanup(void)
-{
- pci_unregister_driver(&spider_net_driver);
-}
-
-module_init(spider_net_init);
-module_exit(spider_net_cleanup);
diff --git a/drivers/net/ethernet/toshiba/spider_net.h b/drivers/net/ethernet/toshiba/spider_net.h
deleted file mode 100644
index 51948e2b3a34..000000000000
--- a/drivers/net/ethernet/toshiba/spider_net.h
+++ /dev/null
@@ -1,475 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
-/*
- * Network device driver for Cell Processor-Based Blade and Celleb platform
- *
- * (C) Copyright IBM Corp. 2005
- * (C) Copyright 2006 TOSHIBA CORPORATION
- *
- * Authors : Utz Bacher <utz.bacher at de.ibm.com>
- * Jens Osterkamp <Jens.Osterkamp at de.ibm.com>
- */
-
-#ifndef _SPIDER_NET_H
-#define _SPIDER_NET_H
-
-#define VERSION "2.0 B"
-
-#include <linux/sungem_phy.h>
-
-int spider_net_stop(struct net_device *netdev);
-int spider_net_open(struct net_device *netdev);
-
-extern const struct ethtool_ops spider_net_ethtool_ops;
-
-extern char spider_net_driver_name[];
-
-#define SPIDER_NET_MAX_FRAME 2312
-#define SPIDER_NET_MAX_MTU 2294
-#define SPIDER_NET_MIN_MTU 64
-
-#define SPIDER_NET_RXBUF_ALIGN 128
-
-#define SPIDER_NET_RX_DESCRIPTORS_DEFAULT 256
-#define SPIDER_NET_RX_DESCRIPTORS_MIN 16
-#define SPIDER_NET_RX_DESCRIPTORS_MAX 512
-
-#define SPIDER_NET_TX_DESCRIPTORS_DEFAULT 256
-#define SPIDER_NET_TX_DESCRIPTORS_MIN 16
-#define SPIDER_NET_TX_DESCRIPTORS_MAX 512
-
-#define SPIDER_NET_TX_TIMER (HZ/5)
-#define SPIDER_NET_ANEG_TIMER (HZ)
-#define SPIDER_NET_ANEG_TIMEOUT 5
-
-#define SPIDER_NET_RX_CSUM_DEFAULT 1
-
-#define SPIDER_NET_WATCHDOG_TIMEOUT 50*HZ
-
-#define SPIDER_NET_FIRMWARE_SEQS 6
-#define SPIDER_NET_FIRMWARE_SEQWORDS 1024
-#define SPIDER_NET_FIRMWARE_LEN (SPIDER_NET_FIRMWARE_SEQS * \
- SPIDER_NET_FIRMWARE_SEQWORDS * \
- sizeof(u32))
-#define SPIDER_NET_FIRMWARE_NAME "spider_fw.bin"
-
-/** spider_net SMMIO registers */
-#define SPIDER_NET_GHIINT0STS 0x00000000
-#define SPIDER_NET_GHIINT1STS 0x00000004
-#define SPIDER_NET_GHIINT2STS 0x00000008
-#define SPIDER_NET_GHIINT0MSK 0x00000010
-#define SPIDER_NET_GHIINT1MSK 0x00000014
-#define SPIDER_NET_GHIINT2MSK 0x00000018
-
-#define SPIDER_NET_GRESUMINTNUM 0x00000020
-#define SPIDER_NET_GREINTNUM 0x00000024
-
-#define SPIDER_NET_GFFRMNUM 0x00000028
-#define SPIDER_NET_GFAFRMNUM 0x0000002c
-#define SPIDER_NET_GFBFRMNUM 0x00000030
-#define SPIDER_NET_GFCFRMNUM 0x00000034
-#define SPIDER_NET_GFDFRMNUM 0x00000038
-
-/* clear them (don't use it) */
-#define SPIDER_NET_GFREECNNUM 0x0000003c
-#define SPIDER_NET_GONETIMENUM 0x00000040
-
-#define SPIDER_NET_GTOUTFRMNUM 0x00000044
-
-#define SPIDER_NET_GTXMDSET 0x00000050
-#define SPIDER_NET_GPCCTRL 0x00000054
-#define SPIDER_NET_GRXMDSET 0x00000058
-#define SPIDER_NET_GIPSECINIT 0x0000005c
-#define SPIDER_NET_GFTRESTRT 0x00000060
-#define SPIDER_NET_GRXDMAEN 0x00000064
-#define SPIDER_NET_GMRWOLCTRL 0x00000068
-#define SPIDER_NET_GPCWOPCMD 0x0000006c
-#define SPIDER_NET_GPCROPCMD 0x00000070
-#define SPIDER_NET_GTTFRMCNT 0x00000078
-#define SPIDER_NET_GTESTMD 0x0000007c
-
-#define SPIDER_NET_GSINIT 0x00000080
-#define SPIDER_NET_GSnPRGADR 0x00000084
-#define SPIDER_NET_GSnPRGDAT 0x00000088
-
-#define SPIDER_NET_GMACOPEMD 0x00000100
-#define SPIDER_NET_GMACLENLMT 0x00000108
-#define SPIDER_NET_GMACST 0x00000110
-#define SPIDER_NET_GMACINTEN 0x00000118
-#define SPIDER_NET_GMACPHYCTRL 0x00000120
-
-#define SPIDER_NET_GMACAPAUSE 0x00000154
-#define SPIDER_NET_GMACTXPAUSE 0x00000164
-
-#define SPIDER_NET_GMACMODE 0x000001b0
-#define SPIDER_NET_GMACBSTLMT 0x000001b4
-
-#define SPIDER_NET_GMACUNIMACU 0x000001c0
-#define SPIDER_NET_GMACUNIMACL 0x000001c8
-
-#define SPIDER_NET_GMRMHFILnR 0x00000400
-#define SPIDER_NET_MULTICAST_HASHES 256
-
-#define SPIDER_NET_GMRUAFILnR 0x00000500
-#define SPIDER_NET_GMRUA0FIL15R 0x00000578
-
-#define SPIDER_NET_GTTQMSK 0x00000934
-
-/* RX DMA controller registers, all 0x00000a.. are for DMA controller A,
- * 0x00000b.. for DMA controller B, etc. */
-#define SPIDER_NET_GDADCHA 0x00000a00
-#define SPIDER_NET_GDADMACCNTR 0x00000a04
-#define SPIDER_NET_GDACTDPA 0x00000a08
-#define SPIDER_NET_GDACTDCNT 0x00000a0c
-#define SPIDER_NET_GDACDBADDR 0x00000a20
-#define SPIDER_NET_GDACDBSIZE 0x00000a24
-#define SPIDER_NET_GDACNEXTDA 0x00000a28
-#define SPIDER_NET_GDACCOMST 0x00000a2c
-#define SPIDER_NET_GDAWBCOMST 0x00000a30
-#define SPIDER_NET_GDAWBRSIZE 0x00000a34
-#define SPIDER_NET_GDAWBVSIZE 0x00000a38
-#define SPIDER_NET_GDAWBTRST 0x00000a3c
-#define SPIDER_NET_GDAWBTRERR 0x00000a40
-
-/* TX DMA controller registers */
-#define SPIDER_NET_GDTDCHA 0x00000e00
-#define SPIDER_NET_GDTDMACCNTR 0x00000e04
-#define SPIDER_NET_GDTCDPA 0x00000e08
-#define SPIDER_NET_GDTDMASEL 0x00000e14
-
-#define SPIDER_NET_ECMODE 0x00000f00
-/* clock and reset control register */
-#define SPIDER_NET_CKRCTRL 0x00000ff0
-
-/** SCONFIG registers */
-#define SPIDER_NET_SCONFIG_IOACTE 0x00002810
-
-/** interrupt mask registers */
-#define SPIDER_NET_INT0_MASK_VALUE 0x3f7fe2c7
-#define SPIDER_NET_INT1_MASK_VALUE 0x0000fff2
-#define SPIDER_NET_INT2_MASK_VALUE 0x000003f1
-
-/* we rely on flagged descriptor interrupts */
-#define SPIDER_NET_FRAMENUM_VALUE 0x00000000
-/* set this first, then the FRAMENUM_VALUE */
-#define SPIDER_NET_GFXFRAMES_VALUE 0x00000000
-
-#define SPIDER_NET_STOP_SEQ_VALUE 0x00000000
-#define SPIDER_NET_RUN_SEQ_VALUE 0x0000007e
-
-#define SPIDER_NET_PHY_CTRL_VALUE 0x00040040
-/* #define SPIDER_NET_PHY_CTRL_VALUE 0x01070080*/
-#define SPIDER_NET_RXMODE_VALUE 0x00000011
-/* auto retransmission in case of MAC aborts */
-#define SPIDER_NET_TXMODE_VALUE 0x00010000
-#define SPIDER_NET_RESTART_VALUE 0x00000000
-#define SPIDER_NET_WOL_VALUE 0x00001111
-#if 0
-#define SPIDER_NET_WOL_VALUE 0x00000000
-#endif
-#define SPIDER_NET_IPSECINIT_VALUE 0x6f716f71
-
-/* pause frames: automatic, no upper retransmission count */
-/* outside loopback mode: ETOMOD signal dont matter, not connected */
-/* ETOMOD signal is brought to PHY reset. bit 2 must be 1 in Celleb */
-#define SPIDER_NET_OPMODE_VALUE 0x00000067
-/*#define SPIDER_NET_OPMODE_VALUE 0x001b0062*/
-#define SPIDER_NET_LENLMT_VALUE 0x00000908
-
-#define SPIDER_NET_MACAPAUSE_VALUE 0x00000800 /* about 1 ms */
-#define SPIDER_NET_TXPAUSE_VALUE 0x00000000
-
-#define SPIDER_NET_MACMODE_VALUE 0x00000001
-#define SPIDER_NET_BURSTLMT_VALUE 0x00000200 /* about 16 us */
-
-/* DMAC control register GDMACCNTR
- *
- * 1(0) enable r/tx dma
- * 0000000 fixed to 0
- *
- * 000000 fixed to 0
- * 0(1) en/disable descr writeback on force end
- * 0(1) force end
- *
- * 000000 fixed to 0
- * 00 burst alignment: 128 bytes
- * 11 burst alignment: 1024 bytes
- *
- * 00000 fixed to 0
- * 0 descr writeback size 32 bytes
- * 0(1) descr chain end interrupt enable
- * 0(1) descr status writeback enable */
-
-/* to set RX_DMA_EN */
-#define SPIDER_NET_DMA_RX_VALUE 0x80000000
-#define SPIDER_NET_DMA_RX_FEND_VALUE 0x00030003
-/* to set TX_DMA_EN */
-#define SPIDER_NET_TX_DMA_EN 0x80000000
-#define SPIDER_NET_GDTBSTA 0x00000300
-#define SPIDER_NET_GDTDCEIDIS 0x00000002
-#define SPIDER_NET_DMA_TX_VALUE SPIDER_NET_TX_DMA_EN | \
- SPIDER_NET_GDTDCEIDIS | \
- SPIDER_NET_GDTBSTA
-
-#define SPIDER_NET_DMA_TX_FEND_VALUE 0x00030003
-
-/* SPIDER_NET_UA_DESCR_VALUE is OR'ed with the unicast address */
-#define SPIDER_NET_UA_DESCR_VALUE 0x00080000
-#define SPIDER_NET_PROMISC_VALUE 0x00080000
-#define SPIDER_NET_NONPROMISC_VALUE 0x00000000
-
-#define SPIDER_NET_DMASEL_VALUE 0x00000001
-
-#define SPIDER_NET_ECMODE_VALUE 0x00000000
-
-#define SPIDER_NET_CKRCTRL_RUN_VALUE 0x1fff010f
-#define SPIDER_NET_CKRCTRL_STOP_VALUE 0x0000010f
-
-#define SPIDER_NET_SBIMSTATE_VALUE 0x00000000
-#define SPIDER_NET_SBTMSTATE_VALUE 0x00000000
-
-/* SPIDER_NET_GHIINT0STS bits, in reverse order so that they can be used
- * with 1 << SPIDER_NET_... */
-enum spider_net_int0_status {
- SPIDER_NET_GPHYINT = 0,
- SPIDER_NET_GMAC2INT,
- SPIDER_NET_GMAC1INT,
- SPIDER_NET_GIPSINT,
- SPIDER_NET_GFIFOINT,
- SPIDER_NET_GDMACINT,
- SPIDER_NET_GSYSINT,
- SPIDER_NET_GPWOPCMPINT,
- SPIDER_NET_GPROPCMPINT,
- SPIDER_NET_GPWFFINT,
- SPIDER_NET_GRMDADRINT,
- SPIDER_NET_GRMARPINT,
- SPIDER_NET_GRMMPINT,
- SPIDER_NET_GDTDEN0INT,
- SPIDER_NET_GDDDEN0INT,
- SPIDER_NET_GDCDEN0INT,
- SPIDER_NET_GDBDEN0INT,
- SPIDER_NET_GDADEN0INT,
- SPIDER_NET_GDTFDCINT,
- SPIDER_NET_GDDFDCINT,
- SPIDER_NET_GDCFDCINT,
- SPIDER_NET_GDBFDCINT,
- SPIDER_NET_GDAFDCINT,
- SPIDER_NET_GTTEDINT,
- SPIDER_NET_GDTDCEINT,
- SPIDER_NET_GRFDNMINT,
- SPIDER_NET_GRFCNMINT,
- SPIDER_NET_GRFBNMINT,
- SPIDER_NET_GRFANMINT,
- SPIDER_NET_GRFNMINT,
- SPIDER_NET_G1TMCNTINT,
- SPIDER_NET_GFREECNTINT
-};
-/* GHIINT1STS bits */
-enum spider_net_int1_status {
- SPIDER_NET_GTMFLLINT = 0,
- SPIDER_NET_GRMFLLINT,
- SPIDER_NET_GTMSHTINT,
- SPIDER_NET_GDTINVDINT,
- SPIDER_NET_GRFDFLLINT,
- SPIDER_NET_GDDDCEINT,
- SPIDER_NET_GDDINVDINT,
- SPIDER_NET_GRFCFLLINT,
- SPIDER_NET_GDCDCEINT,
- SPIDER_NET_GDCINVDINT,
- SPIDER_NET_GRFBFLLINT,
- SPIDER_NET_GDBDCEINT,
- SPIDER_NET_GDBINVDINT,
- SPIDER_NET_GRFAFLLINT,
- SPIDER_NET_GDADCEINT,
- SPIDER_NET_GDAINVDINT,
- SPIDER_NET_GDTRSERINT,
- SPIDER_NET_GDDRSERINT,
- SPIDER_NET_GDCRSERINT,
- SPIDER_NET_GDBRSERINT,
- SPIDER_NET_GDARSERINT,
- SPIDER_NET_GDSERINT,
- SPIDER_NET_GDTPTERINT,
- SPIDER_NET_GDDPTERINT,
- SPIDER_NET_GDCPTERINT,
- SPIDER_NET_GDBPTERINT,
- SPIDER_NET_GDAPTERINT
-};
-/* GHIINT2STS bits */
-enum spider_net_int2_status {
- SPIDER_NET_GPROPERINT = 0,
- SPIDER_NET_GMCTCRSNGINT,
- SPIDER_NET_GMCTLCOLINT,
- SPIDER_NET_GMCTTMOTINT,
- SPIDER_NET_GMCRCAERINT,
- SPIDER_NET_GMCRCALERINT,
- SPIDER_NET_GMCRALNERINT,
- SPIDER_NET_GMCROVRINT,
- SPIDER_NET_GMCRRNTINT,
- SPIDER_NET_GMCRRXERINT,
- SPIDER_NET_GTITCSERINT,
- SPIDER_NET_GTIFMTERINT,
- SPIDER_NET_GTIPKTRVKINT,
- SPIDER_NET_GTISPINGINT,
- SPIDER_NET_GTISADNGINT,
- SPIDER_NET_GTISPDNGINT,
- SPIDER_NET_GRIFMTERINT,
- SPIDER_NET_GRIPKTRVKINT,
- SPIDER_NET_GRISPINGINT,
- SPIDER_NET_GRISADNGINT,
- SPIDER_NET_GRISPDNGINT
-};
-
-#define SPIDER_NET_TXINT (1 << SPIDER_NET_GDTFDCINT)
-
-/* We rely on flagged descriptor interrupts */
-#define SPIDER_NET_RXINT ( (1 << SPIDER_NET_GDAFDCINT) )
-
-#define SPIDER_NET_LINKINT ( 1 << SPIDER_NET_GMAC2INT )
-
-#define SPIDER_NET_ERRINT ( 0xffffffff & \
- (~SPIDER_NET_TXINT) & \
- (~SPIDER_NET_RXINT) & \
- (~SPIDER_NET_LINKINT) )
-
-#define SPIDER_NET_GPREXEC 0x80000000
-#define SPIDER_NET_GPRDAT_MASK 0x0000ffff
-
-#define SPIDER_NET_DMAC_NOINTR_COMPLETE 0x00800000
-#define SPIDER_NET_DMAC_TXFRMTL 0x00040000
-#define SPIDER_NET_DMAC_TCP 0x00020000
-#define SPIDER_NET_DMAC_UDP 0x00030000
-#define SPIDER_NET_TXDCEST 0x08000000
-
-#define SPIDER_NET_DESCR_RXFDIS 0x00000001
-#define SPIDER_NET_DESCR_RXDCEIS 0x00000002
-#define SPIDER_NET_DESCR_RXDEN0IS 0x00000004
-#define SPIDER_NET_DESCR_RXINVDIS 0x00000008
-#define SPIDER_NET_DESCR_RXRERRIS 0x00000010
-#define SPIDER_NET_DESCR_RXFDCIMS 0x00000100
-#define SPIDER_NET_DESCR_RXDCEIMS 0x00000200
-#define SPIDER_NET_DESCR_RXDEN0IMS 0x00000400
-#define SPIDER_NET_DESCR_RXINVDIMS 0x00000800
-#define SPIDER_NET_DESCR_RXRERRMIS 0x00001000
-#define SPIDER_NET_DESCR_UNUSED 0x077fe0e0
-
-#define SPIDER_NET_DESCR_IND_PROC_MASK 0xF0000000
-#define SPIDER_NET_DESCR_COMPLETE 0x00000000 /* used in rx and tx */
-#define SPIDER_NET_DESCR_RESPONSE_ERROR 0x10000000 /* used in rx and tx */
-#define SPIDER_NET_DESCR_PROTECTION_ERROR 0x20000000 /* used in rx and tx */
-#define SPIDER_NET_DESCR_FRAME_END 0x40000000 /* used in rx */
-#define SPIDER_NET_DESCR_FORCE_END 0x50000000 /* used in rx and tx */
-#define SPIDER_NET_DESCR_CARDOWNED 0xA0000000 /* used in rx and tx */
-#define SPIDER_NET_DESCR_NOT_IN_USE 0xF0000000
-#define SPIDER_NET_DESCR_TXDESFLG 0x00800000
-
-#define SPIDER_NET_DESCR_BAD_STATUS (SPIDER_NET_DESCR_RXDEN0IS | \
- SPIDER_NET_DESCR_RXRERRIS | \
- SPIDER_NET_DESCR_RXDEN0IMS | \
- SPIDER_NET_DESCR_RXINVDIMS | \
- SPIDER_NET_DESCR_RXRERRMIS | \
- SPIDER_NET_DESCR_UNUSED)
-
-/* Descriptor, as defined by the hardware */
-struct spider_net_hw_descr {
- 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 */
-} __attribute__((aligned(32)));
-
-struct spider_net_descr {
- struct spider_net_hw_descr *hwdescr;
- struct sk_buff *skb;
- u32 bus_addr;
- struct spider_net_descr *next;
- struct spider_net_descr *prev;
-};
-
-struct spider_net_descr_chain {
- spinlock_t lock;
- struct spider_net_descr *head;
- struct spider_net_descr *tail;
- struct spider_net_descr *ring;
- int num_desc;
- struct spider_net_hw_descr *hwring;
- dma_addr_t dma_addr;
-};
-
-/* descriptor data_status bits */
-#define SPIDER_NET_RX_IPCHK 29
-#define SPIDER_NET_RX_TCPCHK 28
-#define SPIDER_NET_VLAN_PACKET 21
-#define SPIDER_NET_DATA_STATUS_CKSUM_MASK ( (1 << SPIDER_NET_RX_IPCHK) | \
- (1 << SPIDER_NET_RX_TCPCHK) )
-
-/* descriptor data_error bits */
-#define SPIDER_NET_RX_IPCHKERR 27
-#define SPIDER_NET_RX_RXTCPCHKERR 28
-
-#define SPIDER_NET_DATA_ERR_CKSUM_MASK (1 << SPIDER_NET_RX_IPCHKERR)
-
-/* the cases we don't pass the packet to the stack.
- * 701b8000 would be correct, but every packets gets that flag */
-#define SPIDER_NET_DESTROY_RX_FLAGS 0x700b8000
-
-#define SPIDER_NET_DEFAULT_MSG ( NETIF_MSG_DRV | \
- NETIF_MSG_PROBE | \
- NETIF_MSG_LINK | \
- NETIF_MSG_TIMER | \
- NETIF_MSG_IFDOWN | \
- NETIF_MSG_IFUP | \
- NETIF_MSG_RX_ERR | \
- NETIF_MSG_TX_ERR | \
- NETIF_MSG_TX_QUEUED | \
- NETIF_MSG_INTR | \
- NETIF_MSG_TX_DONE | \
- NETIF_MSG_RX_STATUS | \
- NETIF_MSG_PKTDATA | \
- NETIF_MSG_HW | \
- NETIF_MSG_WOL )
-
-struct spider_net_extra_stats {
- unsigned long rx_desc_error;
- unsigned long tx_timeouts;
- unsigned long alloc_rx_skb_error;
- unsigned long rx_iommu_map_error;
- unsigned long tx_iommu_map_error;
- unsigned long rx_desc_unk_state;
-};
-
-struct spider_net_card {
- struct net_device *netdev;
- struct pci_dev *pdev;
- struct mii_phy phy;
-
- struct napi_struct napi;
-
- int medium;
-
- void __iomem *regs;
-
- struct spider_net_descr_chain tx_chain;
- struct spider_net_descr_chain rx_chain;
- struct spider_net_descr *low_watermark;
-
- int aneg_count;
- struct timer_list aneg_timer;
- struct timer_list tx_timer;
- struct work_struct tx_timeout_task;
- atomic_t tx_timeout_task_counter;
- wait_queue_head_t waitq;
- int num_rx_ints;
- int ignore_rx_ramfull;
-
- /* for ethtool */
- int msg_enable;
- struct spider_net_extra_stats spider_stats;
-
- /* Must be last item in struct */
- struct spider_net_descr darray[];
-};
-
-#endif
diff --git a/drivers/net/ethernet/toshiba/spider_net_ethtool.c b/drivers/net/ethernet/toshiba/spider_net_ethtool.c
deleted file mode 100644
index fef9fd127b5e..000000000000
--- a/drivers/net/ethernet/toshiba/spider_net_ethtool.c
+++ /dev/null
@@ -1,174 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * Network device driver for Cell Processor-Based Blade
- *
- * (C) Copyright IBM Corp. 2005
- *
- * Authors : Utz Bacher <utz.bacher at de.ibm.com>
- * Jens Osterkamp <Jens.Osterkamp at de.ibm.com>
- */
-
-#include <linux/netdevice.h>
-#include <linux/ethtool.h>
-#include <linux/pci.h>
-
-#include "spider_net.h"
-
-
-static struct {
- const char str[ETH_GSTRING_LEN];
-} ethtool_stats_keys[] = {
- { "tx_packets" },
- { "tx_bytes" },
- { "rx_packets" },
- { "rx_bytes" },
- { "tx_errors" },
- { "tx_dropped" },
- { "rx_dropped" },
- { "rx_descriptor_error" },
- { "tx_timeouts" },
- { "alloc_rx_skb_error" },
- { "rx_iommu_map_error" },
- { "tx_iommu_map_error" },
- { "rx_desc_unk_state" },
-};
-
-static int
-spider_net_ethtool_get_link_ksettings(struct net_device *netdev,
- struct ethtool_link_ksettings *cmd)
-{
- struct spider_net_card *card;
- card = netdev_priv(netdev);
-
- ethtool_link_ksettings_zero_link_mode(cmd, supported);
- ethtool_link_ksettings_add_link_mode(cmd, supported, 1000baseT_Full);
- ethtool_link_ksettings_add_link_mode(cmd, supported, FIBRE);
-
- ethtool_link_ksettings_zero_link_mode(cmd, advertising);
- ethtool_link_ksettings_add_link_mode(cmd, advertising, 1000baseT_Full);
- ethtool_link_ksettings_add_link_mode(cmd, advertising, FIBRE);
-
- cmd->base.port = PORT_FIBRE;
- cmd->base.speed = card->phy.speed;
- cmd->base.duplex = DUPLEX_FULL;
-
- return 0;
-}
-
-static void
-spider_net_ethtool_get_drvinfo(struct net_device *netdev,
- struct ethtool_drvinfo *drvinfo)
-{
- struct spider_net_card *card;
- card = netdev_priv(netdev);
-
- /* clear and fill out info */
- strscpy(drvinfo->driver, spider_net_driver_name,
- sizeof(drvinfo->driver));
- strscpy(drvinfo->version, VERSION, sizeof(drvinfo->version));
- strscpy(drvinfo->fw_version, "no information",
- sizeof(drvinfo->fw_version));
- strscpy(drvinfo->bus_info, pci_name(card->pdev),
- sizeof(drvinfo->bus_info));
-}
-
-static void
-spider_net_ethtool_get_wol(struct net_device *netdev,
- struct ethtool_wolinfo *wolinfo)
-{
- /* no support for wol */
- wolinfo->supported = 0;
- wolinfo->wolopts = 0;
-}
-
-static u32
-spider_net_ethtool_get_msglevel(struct net_device *netdev)
-{
- struct spider_net_card *card;
- card = netdev_priv(netdev);
- return card->msg_enable;
-}
-
-static void
-spider_net_ethtool_set_msglevel(struct net_device *netdev,
- u32 level)
-{
- struct spider_net_card *card;
- card = netdev_priv(netdev);
- card->msg_enable = level;
-}
-
-static int
-spider_net_ethtool_nway_reset(struct net_device *netdev)
-{
- if (netif_running(netdev)) {
- spider_net_stop(netdev);
- spider_net_open(netdev);
- }
- return 0;
-}
-
-static void
-spider_net_ethtool_get_ringparam(struct net_device *netdev,
- struct ethtool_ringparam *ering,
- struct kernel_ethtool_ringparam *kernel_ering,
- struct netlink_ext_ack *extack)
-{
- struct spider_net_card *card = netdev_priv(netdev);
-
- ering->tx_max_pending = SPIDER_NET_TX_DESCRIPTORS_MAX;
- ering->tx_pending = card->tx_chain.num_desc;
- ering->rx_max_pending = SPIDER_NET_RX_DESCRIPTORS_MAX;
- ering->rx_pending = card->rx_chain.num_desc;
-}
-
-static int spider_net_get_sset_count(struct net_device *netdev, int sset)
-{
- switch (sset) {
- case ETH_SS_STATS:
- return ARRAY_SIZE(ethtool_stats_keys);
- default:
- return -EOPNOTSUPP;
- }
-}
-
-static void spider_net_get_ethtool_stats(struct net_device *netdev,
- struct ethtool_stats *stats, u64 *data)
-{
- struct spider_net_card *card = netdev_priv(netdev);
-
- data[0] = netdev->stats.tx_packets;
- data[1] = netdev->stats.tx_bytes;
- data[2] = netdev->stats.rx_packets;
- data[3] = netdev->stats.rx_bytes;
- data[4] = netdev->stats.tx_errors;
- data[5] = netdev->stats.tx_dropped;
- data[6] = netdev->stats.rx_dropped;
- data[7] = card->spider_stats.rx_desc_error;
- data[8] = card->spider_stats.tx_timeouts;
- data[9] = card->spider_stats.alloc_rx_skb_error;
- data[10] = card->spider_stats.rx_iommu_map_error;
- data[11] = card->spider_stats.tx_iommu_map_error;
- data[12] = card->spider_stats.rx_desc_unk_state;
-}
-
-static void spider_net_get_strings(struct net_device *netdev, u32 stringset,
- u8 *data)
-{
- memcpy(data, ethtool_stats_keys, sizeof(ethtool_stats_keys));
-}
-
-const struct ethtool_ops spider_net_ethtool_ops = {
- .get_drvinfo = spider_net_ethtool_get_drvinfo,
- .get_wol = spider_net_ethtool_get_wol,
- .get_msglevel = spider_net_ethtool_get_msglevel,
- .set_msglevel = spider_net_ethtool_set_msglevel,
- .get_link = ethtool_op_get_link,
- .nway_reset = spider_net_ethtool_nway_reset,
- .get_ringparam = spider_net_ethtool_get_ringparam,
- .get_strings = spider_net_get_strings,
- .get_sset_count = spider_net_get_sset_count,
- .get_ethtool_stats = spider_net_get_ethtool_stats,
- .get_link_ksettings = spider_net_ethtool_get_link_ksettings,
-};
-
--
2.47.0
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