![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>
300 lines
7.6 KiB
C
300 lines
7.6 KiB
C
/*
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* jazzsonic.c
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*
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* (C) 2005 Finn Thain
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*
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* Converted to DMA API, and (from the mac68k project) introduced
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* dhd's support for 16-bit cards.
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*
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* (C) 1996,1998 by Thomas Bogendoerfer (tsbogend@alpha.franken.de)
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*
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* This driver is based on work from Andreas Busse, but most of
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* the code is rewritten.
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*
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* (C) 1995 by Andreas Busse (andy@waldorf-gmbh.de)
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*
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* A driver for the onboard Sonic ethernet controller on Mips Jazz
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* systems (Acer Pica-61, Mips Magnum 4000, Olivetti M700 and
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* perhaps others, too)
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/types.h>
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#include <linux/fcntl.h>
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#include <linux/gfp.h>
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#include <linux/interrupt.h>
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#include <linux/init.h>
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#include <linux/ioport.h>
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#include <linux/in.h>
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#include <linux/string.h>
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#include <linux/delay.h>
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#include <linux/errno.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/platform_device.h>
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#include <linux/dma-mapping.h>
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#include <linux/slab.h>
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#include <asm/bootinfo.h>
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#include <asm/system.h>
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#include <asm/pgtable.h>
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#include <asm/io.h>
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#include <asm/dma.h>
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#include <asm/jazz.h>
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#include <asm/jazzdma.h>
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static char jazz_sonic_string[] = "jazzsonic";
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#define SONIC_MEM_SIZE 0x100
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#include "sonic.h"
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/*
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* Macros to access SONIC registers
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*/
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#define SONIC_READ(reg) (*((volatile unsigned int *)dev->base_addr+reg))
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#define SONIC_WRITE(reg,val) \
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do { \
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*((volatile unsigned int *)dev->base_addr+(reg)) = (val); \
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} while (0)
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/* use 0 for production, 1 for verification, >1 for debug */
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#ifdef SONIC_DEBUG
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static unsigned int sonic_debug = SONIC_DEBUG;
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#else
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static unsigned int sonic_debug = 1;
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#endif
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/*
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* We cannot use station (ethernet) address prefixes to detect the
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* sonic controller since these are board manufacturer depended.
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* So we check for known Silicon Revision IDs instead.
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*/
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static unsigned short known_revisions[] =
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{
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0x04, /* Mips Magnum 4000 */
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0xffff /* end of list */
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};
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static int jazzsonic_open(struct net_device* dev)
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{
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if (request_irq(dev->irq, sonic_interrupt, IRQF_DISABLED, "sonic", dev)) {
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printk(KERN_ERR "%s: unable to get IRQ %d.\n", dev->name, dev->irq);
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return -EAGAIN;
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}
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return sonic_open(dev);
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}
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static int jazzsonic_close(struct net_device* dev)
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{
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int err;
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err = sonic_close(dev);
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free_irq(dev->irq, dev);
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return err;
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}
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static const struct net_device_ops sonic_netdev_ops = {
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.ndo_open = jazzsonic_open,
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.ndo_stop = jazzsonic_close,
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.ndo_start_xmit = sonic_send_packet,
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.ndo_get_stats = sonic_get_stats,
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.ndo_set_multicast_list = sonic_multicast_list,
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.ndo_tx_timeout = sonic_tx_timeout,
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.ndo_change_mtu = eth_change_mtu,
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.ndo_validate_addr = eth_validate_addr,
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.ndo_set_mac_address = eth_mac_addr,
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};
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static int __devinit sonic_probe1(struct net_device *dev)
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{
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static unsigned version_printed;
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unsigned int silicon_revision;
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unsigned int val;
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struct sonic_local *lp = netdev_priv(dev);
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int err = -ENODEV;
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int i;
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if (!request_mem_region(dev->base_addr, SONIC_MEM_SIZE, jazz_sonic_string))
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return -EBUSY;
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/*
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* get the Silicon Revision ID. If this is one of the known
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* one assume that we found a SONIC ethernet controller at
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* the expected location.
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*/
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silicon_revision = SONIC_READ(SONIC_SR);
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if (sonic_debug > 1)
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printk("SONIC Silicon Revision = 0x%04x\n",silicon_revision);
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i = 0;
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while (known_revisions[i] != 0xffff &&
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known_revisions[i] != silicon_revision)
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i++;
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if (known_revisions[i] == 0xffff) {
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printk("SONIC ethernet controller not found (0x%4x)\n",
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silicon_revision);
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goto out;
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}
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if (sonic_debug && version_printed++ == 0)
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printk(version);
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printk(KERN_INFO "%s: Sonic ethernet found at 0x%08lx, ",
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dev_name(lp->device), dev->base_addr);
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/*
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* Put the sonic into software reset, then
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* retrieve and print the ethernet address.
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*/
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SONIC_WRITE(SONIC_CMD,SONIC_CR_RST);
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SONIC_WRITE(SONIC_CEP,0);
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for (i=0; i<3; i++) {
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val = SONIC_READ(SONIC_CAP0-i);
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dev->dev_addr[i*2] = val;
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dev->dev_addr[i*2+1] = val >> 8;
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}
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err = -ENOMEM;
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/* Initialize the device structure. */
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lp->dma_bitmode = SONIC_BITMODE32;
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/* Allocate the entire chunk of memory for the descriptors.
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Note that this cannot cross a 64K boundary. */
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if ((lp->descriptors = dma_alloc_coherent(lp->device,
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SIZEOF_SONIC_DESC * SONIC_BUS_SCALE(lp->dma_bitmode),
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&lp->descriptors_laddr, GFP_KERNEL)) == NULL) {
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printk(KERN_ERR "%s: couldn't alloc DMA memory for descriptors.\n",
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dev_name(lp->device));
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goto out;
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}
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/* Now set up the pointers to point to the appropriate places */
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lp->cda = lp->descriptors;
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lp->tda = lp->cda + (SIZEOF_SONIC_CDA
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* SONIC_BUS_SCALE(lp->dma_bitmode));
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lp->rda = lp->tda + (SIZEOF_SONIC_TD * SONIC_NUM_TDS
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* SONIC_BUS_SCALE(lp->dma_bitmode));
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lp->rra = lp->rda + (SIZEOF_SONIC_RD * SONIC_NUM_RDS
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* SONIC_BUS_SCALE(lp->dma_bitmode));
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lp->cda_laddr = lp->descriptors_laddr;
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lp->tda_laddr = lp->cda_laddr + (SIZEOF_SONIC_CDA
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* SONIC_BUS_SCALE(lp->dma_bitmode));
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lp->rda_laddr = lp->tda_laddr + (SIZEOF_SONIC_TD * SONIC_NUM_TDS
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* SONIC_BUS_SCALE(lp->dma_bitmode));
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lp->rra_laddr = lp->rda_laddr + (SIZEOF_SONIC_RD * SONIC_NUM_RDS
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* SONIC_BUS_SCALE(lp->dma_bitmode));
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dev->netdev_ops = &sonic_netdev_ops;
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dev->watchdog_timeo = TX_TIMEOUT;
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/*
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* clear tally counter
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*/
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SONIC_WRITE(SONIC_CRCT,0xffff);
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SONIC_WRITE(SONIC_FAET,0xffff);
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SONIC_WRITE(SONIC_MPT,0xffff);
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return 0;
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out:
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release_mem_region(dev->base_addr, SONIC_MEM_SIZE);
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return err;
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}
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/*
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* Probe for a SONIC ethernet controller on a Mips Jazz board.
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* Actually probing is superfluous but we're paranoid.
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*/
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static int __devinit jazz_sonic_probe(struct platform_device *pdev)
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{
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struct net_device *dev;
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struct sonic_local *lp;
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struct resource *res;
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int err = 0;
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res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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if (!res)
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return -ENODEV;
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dev = alloc_etherdev(sizeof(struct sonic_local));
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if (!dev)
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return -ENOMEM;
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lp = netdev_priv(dev);
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lp->device = &pdev->dev;
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SET_NETDEV_DEV(dev, &pdev->dev);
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platform_set_drvdata(pdev, dev);
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netdev_boot_setup_check(dev);
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dev->base_addr = res->start;
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dev->irq = platform_get_irq(pdev, 0);
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err = sonic_probe1(dev);
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if (err)
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goto out;
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err = register_netdev(dev);
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if (err)
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goto out1;
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printk("%s: MAC %pM IRQ %d\n", dev->name, dev->dev_addr, dev->irq);
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return 0;
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out1:
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release_mem_region(dev->base_addr, SONIC_MEM_SIZE);
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out:
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free_netdev(dev);
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return err;
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}
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MODULE_DESCRIPTION("Jazz SONIC ethernet driver");
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module_param(sonic_debug, int, 0);
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MODULE_PARM_DESC(sonic_debug, "jazzsonic debug level (1-4)");
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MODULE_ALIAS("platform:jazzsonic");
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#include "sonic.c"
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static int __devexit jazz_sonic_device_remove (struct platform_device *pdev)
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{
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struct net_device *dev = platform_get_drvdata(pdev);
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struct sonic_local* lp = netdev_priv(dev);
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unregister_netdev(dev);
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dma_free_coherent(lp->device, SIZEOF_SONIC_DESC * SONIC_BUS_SCALE(lp->dma_bitmode),
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lp->descriptors, lp->descriptors_laddr);
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release_mem_region(dev->base_addr, SONIC_MEM_SIZE);
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free_netdev(dev);
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return 0;
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}
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static struct platform_driver jazz_sonic_driver = {
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.probe = jazz_sonic_probe,
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.remove = __devexit_p(jazz_sonic_device_remove),
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.driver = {
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.name = jazz_sonic_string,
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.owner = THIS_MODULE,
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},
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};
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static int __init jazz_sonic_init_module(void)
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{
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return platform_driver_register(&jazz_sonic_driver);
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}
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static void __exit jazz_sonic_cleanup_module(void)
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{
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platform_driver_unregister(&jazz_sonic_driver);
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}
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module_init(jazz_sonic_init_module);
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module_exit(jazz_sonic_cleanup_module);
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