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net: spider_net: Remove powerpc Cell driver
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. Reviewed-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Acked-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com> Link: https://patch.msgid.link/20241218105523.416573-24-mpe@ellerman.id.au
This commit is contained in:
Michael Ellerman
Madhavan Srinivasan
parent
16479389cf
commit
d9fefcea81
8
CREDITS
8
CREDITS
@ -2187,6 +2187,10 @@ D: Various ACPI fixes, keeping correct battery state through suspend
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D: various lockdep annotations, autofs and other random bugfixes
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S: Prague, Czech Republic
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N: Ishizaki Kou
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E: kou.ishizaki@toshiba.co.jp
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D: Spidernet driver for PowerPC Cell platforms
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N: Gene Kozin
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E: 74604.152@compuserve.com
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W: https://www.sangoma.com
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@ -2392,6 +2396,10 @@ S: ICP vortex GmbH
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S: Neckarsulm
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S: Germany
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N: Geoff Levand
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E: geoff@infradead.org
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D: Spidernet driver for PowerPC Cell platforms
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N: Phil Lewis
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E: beans@bucket.ualr.edu
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D: Promised to send money if I would put his name in the source tree.
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@ -55,7 +55,6 @@ Contents:
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ti/cpsw_switchdev
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ti/am65_nuss_cpsw_switchdev
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ti/tlan
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toshiba/spider_net
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wangxun/txgbe
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wangxun/ngbe
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@ -1,202 +0,0 @@
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.. SPDX-License-Identifier: GPL-2.0
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===========================
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The Spidernet Device Driver
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===========================
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Written by Linas Vepstas <linas@austin.ibm.com>
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Version of 7 June 2007
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Abstract
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========
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This document sketches the structure of portions of the spidernet
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device driver in the Linux kernel tree. The spidernet is a gigabit
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ethernet device built into the Toshiba southbridge commonly used
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in the SONY Playstation 3 and the IBM QS20 Cell blade.
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The Structure of the RX Ring.
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=============================
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The receive (RX) ring is a circular linked list of RX descriptors,
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together with three pointers into the ring that are used to manage its
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contents.
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The elements of the ring are called "descriptors" or "descrs"; they
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describe the received data. This includes a pointer to a buffer
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containing the received data, the buffer size, and various status bits.
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There are three primary states that a descriptor can be in: "empty",
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"full" and "not-in-use". An "empty" or "ready" descriptor is ready
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to receive data from the hardware. A "full" descriptor has data in it,
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and is waiting to be emptied and processed by the OS. A "not-in-use"
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descriptor is neither empty or full; it is simply not ready. It may
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not even have a data buffer in it, or is otherwise unusable.
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During normal operation, on device startup, the OS (specifically, the
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spidernet device driver) allocates a set of RX descriptors and RX
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buffers. These are all marked "empty", ready to receive data. This
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ring is handed off to the hardware, which sequentially fills in the
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buffers, and marks them "full". The OS follows up, taking the full
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buffers, processing them, and re-marking them empty.
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This filling and emptying is managed by three pointers, the "head"
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and "tail" pointers, managed by the OS, and a hardware current
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descriptor pointer (GDACTDPA). The GDACTDPA points at the descr
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currently being filled. When this descr is filled, the hardware
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marks it full, and advances the GDACTDPA by one. Thus, when there is
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flowing RX traffic, every descr behind it should be marked "full",
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and everything in front of it should be "empty". If the hardware
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discovers that the current descr is not empty, it will signal an
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interrupt, and halt processing.
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The tail pointer tails or trails the hardware pointer. When the
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hardware is ahead, the tail pointer will be pointing at a "full"
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descr. The OS will process this descr, and then mark it "not-in-use",
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and advance the tail pointer. Thus, when there is flowing RX traffic,
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all of the descrs in front of the tail pointer should be "full", and
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all of those behind it should be "not-in-use". When RX traffic is not
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flowing, then the tail pointer can catch up to the hardware pointer.
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The OS will then note that the current tail is "empty", and halt
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processing.
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The head pointer (somewhat mis-named) follows after the tail pointer.
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When traffic is flowing, then the head pointer will be pointing at
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a "not-in-use" descr. The OS will perform various housekeeping duties
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on this descr. This includes allocating a new data buffer and
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dma-mapping it so as to make it visible to the hardware. The OS will
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then mark the descr as "empty", ready to receive data. Thus, when there
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is flowing RX traffic, everything in front of the head pointer should
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be "not-in-use", and everything behind it should be "empty". If no
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RX traffic is flowing, then the head pointer can catch up to the tail
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pointer, at which point the OS will notice that the head descr is
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"empty", and it will halt processing.
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Thus, in an idle system, the GDACTDPA, tail and head pointers will
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all be pointing at the same descr, which should be "empty". All of the
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other descrs in the ring should be "empty" as well.
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The show_rx_chain() routine will print out the locations of the
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GDACTDPA, tail and head pointers. It will also summarize the contents
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of the ring, starting at the tail pointer, and listing the status
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of the descrs that follow.
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A typical example of the output, for a nearly idle system, might be::
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net eth1: Total number of descrs=256
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net eth1: Chain tail located at descr=20
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net eth1: Chain head is at 20
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net eth1: HW curr desc (GDACTDPA) is at 21
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net eth1: Have 1 descrs with stat=x40800101
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net eth1: HW next desc (GDACNEXTDA) is at 22
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net eth1: Last 255 descrs with stat=xa0800000
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In the above, the hardware has filled in one descr, number 20. Both
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head and tail are pointing at 20, because it has not yet been emptied.
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Meanwhile, hw is pointing at 21, which is free.
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The "Have nnn decrs" refers to the descr starting at the tail: in this
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case, nnn=1 descr, starting at descr 20. The "Last nnn descrs" refers
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to all of the rest of the descrs, from the last status change. The "nnn"
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is a count of how many descrs have exactly the same status.
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The status x4... corresponds to "full" and status xa... corresponds
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to "empty". The actual value printed is RXCOMST_A.
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In the device driver source code, a different set of names are
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used for these same concepts, so that::
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"empty" == SPIDER_NET_DESCR_CARDOWNED == 0xa
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"full" == SPIDER_NET_DESCR_FRAME_END == 0x4
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"not in use" == SPIDER_NET_DESCR_NOT_IN_USE == 0xf
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The RX RAM full bug/feature
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===========================
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As long as the OS can empty out the RX buffers at a rate faster than
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the hardware can fill them, there is no problem. If, for some reason,
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the OS fails to empty the RX ring fast enough, the hardware GDACTDPA
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pointer will catch up to the head, notice the not-empty condition,
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ad stop. However, RX packets may still continue arriving on the wire.
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The spidernet chip can save some limited number of these in local RAM.
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When this local ram fills up, the spider chip will issue an interrupt
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indicating this (GHIINT0STS will show ERRINT, and the GRMFLLINT bit
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will be set in GHIINT1STS). When the RX ram full condition occurs,
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a certain bug/feature is triggered that has to be specially handled.
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This section describes the special handling for this condition.
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When the OS finally has a chance to run, it will empty out the RX ring.
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In particular, it will clear the descriptor on which the hardware had
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stopped. However, once the hardware has decided that a certain
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descriptor is invalid, it will not restart at that descriptor; instead
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it will restart at the next descr. This potentially will lead to a
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deadlock condition, as the tail pointer will be pointing at this descr,
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which, from the OS point of view, is empty; the OS will be waiting for
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this descr to be filled. However, the hardware has skipped this descr,
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and is filling the next descrs. Since the OS doesn't see this, there
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is a potential deadlock, with the OS waiting for one descr to fill,
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while the hardware is waiting for a different set of descrs to become
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empty.
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A call to show_rx_chain() at this point indicates the nature of the
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problem. A typical print when the network is hung shows the following::
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net eth1: Spider RX RAM full, incoming packets might be discarded!
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net eth1: Total number of descrs=256
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net eth1: Chain tail located at descr=255
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net eth1: Chain head is at 255
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net eth1: HW curr desc (GDACTDPA) is at 0
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net eth1: Have 1 descrs with stat=xa0800000
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net eth1: HW next desc (GDACNEXTDA) is at 1
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net eth1: Have 127 descrs with stat=x40800101
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net eth1: Have 1 descrs with stat=x40800001
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net eth1: Have 126 descrs with stat=x40800101
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net eth1: Last 1 descrs with stat=xa0800000
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Both the tail and head pointers are pointing at descr 255, which is
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marked xa... which is "empty". Thus, from the OS point of view, there
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is nothing to be done. In particular, there is the implicit assumption
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that everything in front of the "empty" descr must surely also be empty,
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as explained in the last section. The OS is waiting for descr 255 to
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become non-empty, which, in this case, will never happen.
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The HW pointer is at descr 0. This descr is marked 0x4.. or "full".
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Since its already full, the hardware can do nothing more, and thus has
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halted processing. Notice that descrs 0 through 254 are all marked
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"full", while descr 254 and 255 are empty. (The "Last 1 descrs" is
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descr 254, since tail was at 255.) Thus, the system is deadlocked,
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and there can be no forward progress; the OS thinks there's nothing
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to do, and the hardware has nowhere to put incoming data.
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This bug/feature is worked around with the spider_net_resync_head_ptr()
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routine. When the driver receives RX interrupts, but an examination
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of the RX chain seems to show it is empty, then it is probable that
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the hardware has skipped a descr or two (sometimes dozens under heavy
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network conditions). The spider_net_resync_head_ptr() subroutine will
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search the ring for the next full descr, and the driver will resume
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operations there. Since this will leave "holes" in the ring, there
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is also a spider_net_resync_tail_ptr() that will skip over such holes.
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As of this writing, the spider_net_resync() strategy seems to work very
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well, even under heavy network loads.
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The TX ring
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===========
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The TX ring uses a low-watermark interrupt scheme to make sure that
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the TX queue is appropriately serviced for large packet sizes.
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For packet sizes greater than about 1KBytes, the kernel can fill
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the TX ring quicker than the device can drain it. Once the ring
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is full, the netdev is stopped. When there is room in the ring,
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the netdev needs to be reawakened, so that more TX packets are placed
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in the ring. The hardware can empty the ring about four times per jiffy,
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so its not appropriate to wait for the poll routine to refill, since
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the poll routine runs only once per jiffy. The low-watermark mechanism
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marks a descr about 1/4th of the way from the bottom of the queue, so
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that an interrupt is generated when the descr is processed. This
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interrupt wakes up the netdev, which can then refill the queue.
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For large packets, this mechanism generates a relatively small number
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of interrupts, about 1K/sec. For smaller packets, this will drop to zero
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interrupts, as the hardware can empty the queue faster than the kernel
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can fill it.
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@ -22351,15 +22351,6 @@ F: include/linux/spi/
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F: include/uapi/linux/spi/
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F: tools/spi/
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SPIDERNET NETWORK DRIVER for CELL
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M: Ishizaki Kou <kou.ishizaki@toshiba.co.jp>
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M: Geoff Levand <geoff@infradead.org>
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L: netdev@vger.kernel.org
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L: linuxppc-dev@lists.ozlabs.org
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S: Maintained
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F: Documentation/networking/device_drivers/ethernet/toshiba/spider_net.rst
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F: drivers/net/ethernet/toshiba/spider_net*
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SPMI SUBSYSTEM
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M: Stephen Boyd <sboyd@kernel.org>
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L: linux-kernel@vger.kernel.org
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@ -39,15 +39,6 @@ config GELIC_WIRELESS
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the driver automatically distinguishes the models, you can
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safely enable this option even if you have a wireless-less model.
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config SPIDER_NET
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tristate "Spider Gigabit Ethernet driver"
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depends on PCI && PPC_IBM_CELL_BLADE
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select FW_LOADER
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select SUNGEM_PHY
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help
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This driver supports the Gigabit Ethernet chips present on the
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Cell Processor-Based Blades from IBM.
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config TC35815
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tristate "TOSHIBA TC35815 Ethernet support"
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depends on PCI && MIPS
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@ -6,6 +6,4 @@
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obj-$(CONFIG_GELIC_NET) += ps3_gelic.o
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gelic_wireless-$(CONFIG_GELIC_WIRELESS) += ps3_gelic_wireless.o
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ps3_gelic-objs += ps3_gelic_net.o $(gelic_wireless-y)
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spidernet-y += spider_net.o spider_net_ethtool.o
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obj-$(CONFIG_SPIDER_NET) += spidernet.o
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obj-$(CONFIG_TC35815) += tc35815.o
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File diff suppressed because it is too large
Load Diff
@ -1,475 +0,0 @@
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/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* Network device driver for Cell Processor-Based Blade and Celleb platform
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*
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* (C) Copyright IBM Corp. 2005
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* (C) Copyright 2006 TOSHIBA CORPORATION
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*
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* Authors : Utz Bacher <utz.bacher@de.ibm.com>
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* Jens Osterkamp <Jens.Osterkamp@de.ibm.com>
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*/
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#ifndef _SPIDER_NET_H
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#define _SPIDER_NET_H
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#define VERSION "2.0 B"
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#include <linux/sungem_phy.h>
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int spider_net_stop(struct net_device *netdev);
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int spider_net_open(struct net_device *netdev);
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extern const struct ethtool_ops spider_net_ethtool_ops;
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extern char spider_net_driver_name[];
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#define SPIDER_NET_MAX_FRAME 2312
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#define SPIDER_NET_MAX_MTU 2294
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#define SPIDER_NET_MIN_MTU 64
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#define SPIDER_NET_RXBUF_ALIGN 128
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#define SPIDER_NET_RX_DESCRIPTORS_DEFAULT 256
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#define SPIDER_NET_RX_DESCRIPTORS_MIN 16
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#define SPIDER_NET_RX_DESCRIPTORS_MAX 512
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#define SPIDER_NET_TX_DESCRIPTORS_DEFAULT 256
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#define SPIDER_NET_TX_DESCRIPTORS_MIN 16
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#define SPIDER_NET_TX_DESCRIPTORS_MAX 512
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#define SPIDER_NET_TX_TIMER (HZ/5)
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#define SPIDER_NET_ANEG_TIMER (HZ)
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#define SPIDER_NET_ANEG_TIMEOUT 5
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#define SPIDER_NET_RX_CSUM_DEFAULT 1
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#define SPIDER_NET_WATCHDOG_TIMEOUT 50*HZ
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#define SPIDER_NET_FIRMWARE_SEQS 6
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#define SPIDER_NET_FIRMWARE_SEQWORDS 1024
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#define SPIDER_NET_FIRMWARE_LEN (SPIDER_NET_FIRMWARE_SEQS * \
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SPIDER_NET_FIRMWARE_SEQWORDS * \
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sizeof(u32))
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#define SPIDER_NET_FIRMWARE_NAME "spider_fw.bin"
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/** spider_net SMMIO registers */
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#define SPIDER_NET_GHIINT0STS 0x00000000
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#define SPIDER_NET_GHIINT1STS 0x00000004
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#define SPIDER_NET_GHIINT2STS 0x00000008
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#define SPIDER_NET_GHIINT0MSK 0x00000010
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#define SPIDER_NET_GHIINT1MSK 0x00000014
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#define SPIDER_NET_GHIINT2MSK 0x00000018
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#define SPIDER_NET_GRESUMINTNUM 0x00000020
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#define SPIDER_NET_GREINTNUM 0x00000024
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#define SPIDER_NET_GFFRMNUM 0x00000028
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#define SPIDER_NET_GFAFRMNUM 0x0000002c
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#define SPIDER_NET_GFBFRMNUM 0x00000030
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#define SPIDER_NET_GFCFRMNUM 0x00000034
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#define SPIDER_NET_GFDFRMNUM 0x00000038
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/* clear them (don't use it) */
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#define SPIDER_NET_GFREECNNUM 0x0000003c
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#define SPIDER_NET_GONETIMENUM 0x00000040
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#define SPIDER_NET_GTOUTFRMNUM 0x00000044
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#define SPIDER_NET_GTXMDSET 0x00000050
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#define SPIDER_NET_GPCCTRL 0x00000054
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#define SPIDER_NET_GRXMDSET 0x00000058
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#define SPIDER_NET_GIPSECINIT 0x0000005c
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#define SPIDER_NET_GFTRESTRT 0x00000060
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#define SPIDER_NET_GRXDMAEN 0x00000064
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#define SPIDER_NET_GMRWOLCTRL 0x00000068
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#define SPIDER_NET_GPCWOPCMD 0x0000006c
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#define SPIDER_NET_GPCROPCMD 0x00000070
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#define SPIDER_NET_GTTFRMCNT 0x00000078
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#define SPIDER_NET_GTESTMD 0x0000007c
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#define SPIDER_NET_GSINIT 0x00000080
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#define SPIDER_NET_GSnPRGADR 0x00000084
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#define SPIDER_NET_GSnPRGDAT 0x00000088
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#define SPIDER_NET_GMACOPEMD 0x00000100
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#define SPIDER_NET_GMACLENLMT 0x00000108
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#define SPIDER_NET_GMACST 0x00000110
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#define SPIDER_NET_GMACINTEN 0x00000118
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#define SPIDER_NET_GMACPHYCTRL 0x00000120
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#define SPIDER_NET_GMACAPAUSE 0x00000154
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#define SPIDER_NET_GMACTXPAUSE 0x00000164
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#define SPIDER_NET_GMACMODE 0x000001b0
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#define SPIDER_NET_GMACBSTLMT 0x000001b4
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#define SPIDER_NET_GMACUNIMACU 0x000001c0
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#define SPIDER_NET_GMACUNIMACL 0x000001c8
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#define SPIDER_NET_GMRMHFILnR 0x00000400
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#define SPIDER_NET_MULTICAST_HASHES 256
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#define SPIDER_NET_GMRUAFILnR 0x00000500
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#define SPIDER_NET_GMRUA0FIL15R 0x00000578
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||||
|
||||
#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
|
||||
@ -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@de.ibm.com>
|
||||
* Jens Osterkamp <Jens.Osterkamp@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,
|
||||
};
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user