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![Tejun Heo](/assets/img/avatar_default.png)
percpu.h is included by sched.h and module.h and thus ends up being included when building most .c files. percpu.h includes slab.h which in turn includes gfp.h making everything defined by the two files universally available and complicating inclusion dependencies. percpu.h -> slab.h dependency is about to be removed. Prepare for this change by updating users of gfp and slab facilities include those headers directly instead of assuming availability. As this conversion needs to touch large number of source files, the following script is used as the basis of conversion. http://userweb.kernel.org/~tj/misc/slabh-sweep.py The script does the followings. * Scan files for gfp and slab usages and update includes such that only the necessary includes are there. ie. if only gfp is used, gfp.h, if slab is used, slab.h. * When the script inserts a new include, it looks at the include blocks and try to put the new include such that its order conforms to its surrounding. It's put in the include block which contains core kernel includes, in the same order that the rest are ordered - alphabetical, Christmas tree, rev-Xmas-tree or at the end if there doesn't seem to be any matching order. * If the script can't find a place to put a new include (mostly because the file doesn't have fitting include block), it prints out an error message indicating which .h file needs to be added to the file. The conversion was done in the following steps. 1. The initial automatic conversion of all .c files updated slightly over 4000 files, deleting around 700 includes and adding ~480 gfp.h and ~3000 slab.h inclusions. The script emitted errors for ~400 files. 2. Each error was manually checked. Some didn't need the inclusion, some needed manual addition while adding it to implementation .h or embedding .c file was more appropriate for others. This step added inclusions to around 150 files. 3. The script was run again and the output was compared to the edits from #2 to make sure no file was left behind. 4. Several build tests were done and a couple of problems were fixed. e.g. lib/decompress_*.c used malloc/free() wrappers around slab APIs requiring slab.h to be added manually. 5. The script was run on all .h files but without automatically editing them as sprinkling gfp.h and slab.h inclusions around .h files could easily lead to inclusion dependency hell. Most gfp.h inclusion directives were ignored as stuff from gfp.h was usually wildly available and often used in preprocessor macros. Each slab.h inclusion directive was examined and added manually as necessary. 6. percpu.h was updated not to include slab.h. 7. Build test were done on the following configurations and failures were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my distributed build env didn't work with gcov compiles) and a few more options had to be turned off depending on archs to make things build (like ipr on powerpc/64 which failed due to missing writeq). * x86 and x86_64 UP and SMP allmodconfig and a custom test config. * powerpc and powerpc64 SMP allmodconfig * sparc and sparc64 SMP allmodconfig * ia64 SMP allmodconfig * s390 SMP allmodconfig * alpha SMP allmodconfig * um on x86_64 SMP allmodconfig 8. percpu.h modifications were reverted so that it could be applied as a separate patch and serve as bisection point. Given the fact that I had only a couple of failures from tests on step 6, I'm fairly confident about the coverage of this conversion patch. If there is a breakage, it's likely to be something in one of the arch headers which should be easily discoverable easily on most builds of the specific arch. Signed-off-by: Tejun Heo <tj@kernel.org> Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
238 lines
6.7 KiB
C
238 lines
6.7 KiB
C
/* lasi_82596.c -- driver for the intel 82596 ethernet controller, as
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munged into HPPA boxen .
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This driver is based upon 82596.c, original credits are below...
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but there were too many hoops which HP wants jumped through to
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keep this code in there in a sane manner.
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3 primary sources of the mess --
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1) hppa needs *lots* of cacheline flushing to keep this kind of
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MMIO running.
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2) The 82596 needs to see all of its pointers as their physical
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address. Thus virt_to_bus/bus_to_virt are *everywhere*.
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3) The implementation HP is using seems to be significantly pickier
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about when and how the command and RX units are started. some
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command ordering was changed.
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Examination of the mach driver leads one to believe that there
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might be a saner way to pull this off... anyone who feels like a
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full rewrite can be my guest.
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Split 02/13/2000 Sam Creasey (sammy@oh.verio.com)
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02/01/2000 Initial modifications for parisc by Helge Deller (deller@gmx.de)
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03/02/2000 changes for better/correct(?) cache-flushing (deller)
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*/
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/* 82596.c: A generic 82596 ethernet driver for linux. */
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/*
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Based on Apricot.c
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Written 1994 by Mark Evans.
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This driver is for the Apricot 82596 bus-master interface
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Modularised 12/94 Mark Evans
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Modified to support the 82596 ethernet chips on 680x0 VME boards.
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by Richard Hirst <richard@sleepie.demon.co.uk>
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Renamed to be 82596.c
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980825: Changed to receive directly in to sk_buffs which are
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allocated at open() time. Eliminates copy on incoming frames
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(small ones are still copied). Shared data now held in a
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non-cached page, so we can run on 68060 in copyback mode.
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TBD:
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* look at deferring rx frames rather than discarding (as per tulip)
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* handle tx ring full as per tulip
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* performance test to tune rx_copybreak
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Most of my modifications relate to the braindead big-endian
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implementation by Intel. When the i596 is operating in
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'big-endian' mode, it thinks a 32 bit value of 0x12345678
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should be stored as 0x56781234. This is a real pain, when
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you have linked lists which are shared by the 680x0 and the
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i596.
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Driver skeleton
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Written 1993 by Donald Becker.
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Copyright 1993 United States Government as represented by the Director,
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National Security Agency. This software may only be used and distributed
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according to the terms of the GNU General Public License as modified by SRC,
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incorporated herein by reference.
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The author may be reached as becker@scyld.com, or C/O
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Scyld Computing Corporation, 410 Severn Ave., Suite 210, Annapolis MD 21403
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*/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/string.h>
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#include <linux/ptrace.h>
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#include <linux/errno.h>
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#include <linux/ioport.h>
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#include <linux/interrupt.h>
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#include <linux/delay.h>
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#include <linux/netdevice.h>
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#include <linux/etherdevice.h>
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#include <linux/skbuff.h>
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#include <linux/init.h>
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#include <linux/types.h>
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#include <linux/bitops.h>
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#include <linux/dma-mapping.h>
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#include <asm/io.h>
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#include <asm/irq.h>
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#include <asm/pdc.h>
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#include <asm/parisc-device.h>
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#define LASI_82596_DRIVER_VERSION "LASI 82596 driver - Revision: 1.30"
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#define PA_I82596_RESET 0 /* Offsets relative to LASI-LAN-Addr.*/
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#define PA_CPU_PORT_L_ACCESS 4
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#define PA_CHANNEL_ATTENTION 8
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#define OPT_SWAP_PORT 0x0001 /* Need to wordswp on the MPU port */
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#define DMA_ALLOC dma_alloc_noncoherent
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#define DMA_FREE dma_free_noncoherent
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#define DMA_WBACK(ndev, addr, len) \
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do { dma_cache_sync((ndev)->dev.parent, (void *)addr, len, DMA_TO_DEVICE); } while (0)
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#define DMA_INV(ndev, addr, len) \
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do { dma_cache_sync((ndev)->dev.parent, (void *)addr, len, DMA_FROM_DEVICE); } while (0)
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#define DMA_WBACK_INV(ndev, addr, len) \
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do { dma_cache_sync((ndev)->dev.parent, (void *)addr, len, DMA_BIDIRECTIONAL); } while (0)
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#define SYSBUS 0x0000006c;
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/* big endian CPU, 82596 "big" endian mode */
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#define SWAP32(x) (((u32)(x)<<16) | ((((u32)(x)))>>16))
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#define SWAP16(x) (x)
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#include "lib82596.c"
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MODULE_AUTHOR("Richard Hirst");
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MODULE_DESCRIPTION("i82596 driver");
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MODULE_LICENSE("GPL");
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module_param(i596_debug, int, 0);
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MODULE_PARM_DESC(i596_debug, "lasi_82596 debug mask");
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static inline void ca(struct net_device *dev)
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{
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gsc_writel(0, dev->base_addr + PA_CHANNEL_ATTENTION);
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}
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static void mpu_port(struct net_device *dev, int c, dma_addr_t x)
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{
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struct i596_private *lp = netdev_priv(dev);
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u32 v = (u32) (c) | (u32) (x);
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u16 a, b;
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if (lp->options & OPT_SWAP_PORT) {
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a = v >> 16;
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b = v & 0xffff;
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} else {
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a = v & 0xffff;
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b = v >> 16;
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}
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gsc_writel(a, dev->base_addr + PA_CPU_PORT_L_ACCESS);
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udelay(1);
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gsc_writel(b, dev->base_addr + PA_CPU_PORT_L_ACCESS);
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}
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#define LAN_PROM_ADDR 0xF0810000
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static int __devinit
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lan_init_chip(struct parisc_device *dev)
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{
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struct net_device *netdevice;
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struct i596_private *lp;
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int retval;
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int i;
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if (!dev->irq) {
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printk(KERN_ERR "%s: IRQ not found for i82596 at 0x%lx\n",
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__FILE__, (unsigned long)dev->hpa.start);
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return -ENODEV;
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}
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printk(KERN_INFO "Found i82596 at 0x%lx, IRQ %d\n",
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(unsigned long)dev->hpa.start, dev->irq);
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netdevice = alloc_etherdev(sizeof(struct i596_private));
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if (!netdevice)
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return -ENOMEM;
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SET_NETDEV_DEV(netdevice, &dev->dev);
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parisc_set_drvdata (dev, netdevice);
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netdevice->base_addr = dev->hpa.start;
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netdevice->irq = dev->irq;
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if (pdc_lan_station_id(netdevice->dev_addr, netdevice->base_addr)) {
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for (i = 0; i < 6; i++) {
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netdevice->dev_addr[i] = gsc_readb(LAN_PROM_ADDR + i);
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}
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printk(KERN_INFO
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"%s: MAC of HP700 LAN read from EEPROM\n", __FILE__);
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}
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lp = netdev_priv(netdevice);
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lp->options = dev->id.sversion == 0x72 ? OPT_SWAP_PORT : 0;
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retval = i82596_probe(netdevice);
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if (retval) {
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free_netdev(netdevice);
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return -ENODEV;
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}
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return retval;
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}
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static int __devexit lan_remove_chip (struct parisc_device *pdev)
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{
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struct net_device *dev = parisc_get_drvdata(pdev);
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struct i596_private *lp = netdev_priv(dev);
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unregister_netdev (dev);
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DMA_FREE(&pdev->dev, sizeof(struct i596_private),
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(void *)lp->dma, lp->dma_addr);
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free_netdev (dev);
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return 0;
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}
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static struct parisc_device_id lan_tbl[] = {
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{ HPHW_FIO, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x0008a },
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{ HPHW_FIO, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x00072 },
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{ 0, }
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};
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MODULE_DEVICE_TABLE(parisc, lan_tbl);
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static struct parisc_driver lan_driver = {
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.name = "lasi_82596",
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.id_table = lan_tbl,
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.probe = lan_init_chip,
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.remove = __devexit_p(lan_remove_chip),
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};
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static int __devinit lasi_82596_init(void)
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{
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printk(KERN_INFO LASI_82596_DRIVER_VERSION "\n");
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return register_parisc_driver(&lan_driver);
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}
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module_init(lasi_82596_init);
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static void __exit lasi_82596_exit(void)
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{
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unregister_parisc_driver(&lan_driver);
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}
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module_exit(lasi_82596_exit);
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