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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>
375 lines
9.8 KiB
C
375 lines
9.8 KiB
C
/*
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* sim710.c - Copyright (C) 1999 Richard Hirst <richard@sleepie.demon.co.uk>
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*
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*----------------------------------------------------------------------------
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*----------------------------------------------------------------------------
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*
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* MCA card detection code by Trent McNair.
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* Fixes to not explicitly nul bss data from Xavier Bestel.
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* Some multiboard fixes from Rolf Eike Beer.
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* Auto probing of EISA config space from Trevor Hemsley.
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*
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* Rewritten to use 53c700.c by James.Bottomley@SteelEye.com
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*
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*/
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#include <linux/module.h>
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#include <linux/slab.h>
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#include <linux/blkdev.h>
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#include <linux/device.h>
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#include <linux/init.h>
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#include <linux/mca.h>
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#include <linux/eisa.h>
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#include <linux/interrupt.h>
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#include <scsi/scsi_host.h>
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#include <scsi/scsi_device.h>
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#include <scsi/scsi_transport.h>
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#include <scsi/scsi_transport_spi.h>
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#include "53c700.h"
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/* Must be enough for both EISA and MCA */
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#define MAX_SLOTS 8
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static __u8 __initdata id_array[MAX_SLOTS] = { [0 ... MAX_SLOTS-1] = 7 };
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static char *sim710; /* command line passed by insmod */
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MODULE_AUTHOR("Richard Hirst");
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MODULE_DESCRIPTION("Simple NCR53C710 driver");
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MODULE_LICENSE("GPL");
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module_param(sim710, charp, 0);
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#ifdef MODULE
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#define ARG_SEP ' '
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#else
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#define ARG_SEP ','
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#endif
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static __init int
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param_setup(char *str)
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{
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char *pos = str, *next;
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int slot = -1;
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while(pos != NULL && (next = strchr(pos, ':')) != NULL) {
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int val = (int)simple_strtoul(++next, NULL, 0);
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if(!strncmp(pos, "slot:", 5))
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slot = val;
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else if(!strncmp(pos, "id:", 3)) {
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if(slot == -1) {
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printk(KERN_WARNING "sim710: Must specify slot for id parameter\n");
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} else if(slot >= MAX_SLOTS) {
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printk(KERN_WARNING "sim710: Illegal slot %d for id %d\n", slot, val);
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} else {
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id_array[slot] = val;
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}
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}
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if((pos = strchr(pos, ARG_SEP)) != NULL)
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pos++;
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}
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return 1;
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}
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__setup("sim710=", param_setup);
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static struct scsi_host_template sim710_driver_template = {
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.name = "LSI (Symbios) 710 MCA/EISA",
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.proc_name = "sim710",
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.this_id = 7,
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.module = THIS_MODULE,
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};
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static __devinit int
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sim710_probe_common(struct device *dev, unsigned long base_addr,
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int irq, int clock, int differential, int scsi_id)
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{
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struct Scsi_Host * host = NULL;
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struct NCR_700_Host_Parameters *hostdata =
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kzalloc(sizeof(struct NCR_700_Host_Parameters), GFP_KERNEL);
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printk(KERN_NOTICE "sim710: %s\n", dev_name(dev));
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printk(KERN_NOTICE "sim710: irq = %d, clock = %d, base = 0x%lx, scsi_id = %d\n",
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irq, clock, base_addr, scsi_id);
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if(hostdata == NULL) {
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printk(KERN_ERR "sim710: Failed to allocate host data\n");
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goto out;
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}
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if(request_region(base_addr, 64, "sim710") == NULL) {
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printk(KERN_ERR "sim710: Failed to reserve IO region 0x%lx\n",
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base_addr);
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goto out_free;
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}
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/* Fill in the three required pieces of hostdata */
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hostdata->base = ioport_map(base_addr, 64);
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hostdata->differential = differential;
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hostdata->clock = clock;
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hostdata->chip710 = 1;
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hostdata->burst_length = 8;
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/* and register the chip */
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if((host = NCR_700_detect(&sim710_driver_template, hostdata, dev))
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== NULL) {
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printk(KERN_ERR "sim710: No host detected; card configuration problem?\n");
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goto out_release;
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}
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host->this_id = scsi_id;
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host->base = base_addr;
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host->irq = irq;
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if (request_irq(irq, NCR_700_intr, IRQF_SHARED, "sim710", host)) {
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printk(KERN_ERR "sim710: request_irq failed\n");
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goto out_put_host;
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}
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dev_set_drvdata(dev, host);
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scsi_scan_host(host);
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return 0;
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out_put_host:
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scsi_host_put(host);
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out_release:
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release_region(base_addr, 64);
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out_free:
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kfree(hostdata);
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out:
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return -ENODEV;
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}
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static __devexit int
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sim710_device_remove(struct device *dev)
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{
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struct Scsi_Host *host = dev_get_drvdata(dev);
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struct NCR_700_Host_Parameters *hostdata =
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(struct NCR_700_Host_Parameters *)host->hostdata[0];
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scsi_remove_host(host);
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NCR_700_release(host);
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kfree(hostdata);
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free_irq(host->irq, host);
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release_region(host->base, 64);
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return 0;
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}
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#ifdef CONFIG_MCA
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/* CARD ID 01BB and 01BA use the same pos values */
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#define MCA_01BB_IO_PORTS { 0x0000, 0x0000, 0x0800, 0x0C00, 0x1000, 0x1400, \
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0x1800, 0x1C00, 0x2000, 0x2400, 0x2800, \
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0x2C00, 0x3000, 0x3400, 0x3800, 0x3C00, \
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0x4000, 0x4400, 0x4800, 0x4C00, 0x5000 }
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#define MCA_01BB_IRQS { 3, 5, 11, 14 }
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/* CARD ID 004f */
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#define MCA_004F_IO_PORTS { 0x0000, 0x0200, 0x0300, 0x0400, 0x0500, 0x0600 }
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#define MCA_004F_IRQS { 5, 9, 14 }
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static short sim710_mca_id_table[] = { 0x01bb, 0x01ba, 0x004f, 0};
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static __init int
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sim710_mca_probe(struct device *dev)
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{
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struct mca_device *mca_dev = to_mca_device(dev);
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int slot = mca_dev->slot;
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int pos[3];
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unsigned int base;
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int irq_vector;
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short id = sim710_mca_id_table[mca_dev->index];
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static int io_004f_by_pos[] = MCA_004F_IO_PORTS;
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static int irq_004f_by_pos[] = MCA_004F_IRQS;
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static int io_01bb_by_pos[] = MCA_01BB_IO_PORTS;
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static int irq_01bb_by_pos[] = MCA_01BB_IRQS;
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char *name;
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int clock;
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pos[0] = mca_device_read_stored_pos(mca_dev, 2);
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pos[1] = mca_device_read_stored_pos(mca_dev, 3);
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pos[2] = mca_device_read_stored_pos(mca_dev, 4);
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/*
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* 01BB & 01BA port base by bits 7,6,5,4,3,2 in pos[2]
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*
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* 000000 <disabled> 001010 0x2800
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* 000001 <invalid> 001011 0x2C00
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* 000010 0x0800 001100 0x3000
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* 000011 0x0C00 001101 0x3400
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* 000100 0x1000 001110 0x3800
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* 000101 0x1400 001111 0x3C00
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* 000110 0x1800 010000 0x4000
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* 000111 0x1C00 010001 0x4400
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* 001000 0x2000 010010 0x4800
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* 001001 0x2400 010011 0x4C00
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* 010100 0x5000
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*
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* 00F4 port base by bits 3,2,1 in pos[0]
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*
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* 000 <disabled> 001 0x200
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* 010 0x300 011 0x400
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* 100 0x500 101 0x600
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*
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* 01BB & 01BA IRQ is specified in pos[0] bits 7 and 6:
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*
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* 00 3 10 11
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* 01 5 11 14
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*
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* 00F4 IRQ specified by bits 6,5,4 in pos[0]
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*
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* 100 5 101 9
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* 110 14
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*/
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if (id == 0x01bb || id == 0x01ba) {
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base = io_01bb_by_pos[(pos[2] & 0xFC) >> 2];
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irq_vector =
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irq_01bb_by_pos[((pos[0] & 0xC0) >> 6)];
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clock = 50;
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if (id == 0x01bb)
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name = "NCR 3360/3430 SCSI SubSystem";
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else
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name = "NCR Dual SIOP SCSI Host Adapter Board";
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} else if ( id == 0x004f ) {
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base = io_004f_by_pos[((pos[0] & 0x0E) >> 1)];
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irq_vector =
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irq_004f_by_pos[((pos[0] & 0x70) >> 4) - 4];
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clock = 50;
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name = "NCR 53c710 SCSI Host Adapter Board";
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} else {
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return -ENODEV;
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}
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mca_device_set_name(mca_dev, name);
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mca_device_set_claim(mca_dev, 1);
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base = mca_device_transform_ioport(mca_dev, base);
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irq_vector = mca_device_transform_irq(mca_dev, irq_vector);
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return sim710_probe_common(dev, base, irq_vector, clock,
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0, id_array[slot]);
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}
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static struct mca_driver sim710_mca_driver = {
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.id_table = sim710_mca_id_table,
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.driver = {
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.name = "sim710",
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.bus = &mca_bus_type,
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.probe = sim710_mca_probe,
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.remove = __devexit_p(sim710_device_remove),
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},
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};
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#endif /* CONFIG_MCA */
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#ifdef CONFIG_EISA
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static struct eisa_device_id sim710_eisa_ids[] = {
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{ "CPQ4410" },
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{ "CPQ4411" },
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{ "HWP0C80" },
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{ "" }
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};
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MODULE_DEVICE_TABLE(eisa, sim710_eisa_ids);
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static __init int
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sim710_eisa_probe(struct device *dev)
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{
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struct eisa_device *edev = to_eisa_device(dev);
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unsigned long io_addr = edev->base_addr;
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char eisa_cpq_irqs[] = { 11, 14, 15, 10, 9, 0 };
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char eisa_hwp_irqs[] = { 3, 4, 5, 7, 12, 10, 11, 0};
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char *eisa_irqs;
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unsigned char irq_index;
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unsigned char irq, differential = 0, scsi_id = 7;
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if(strcmp(edev->id.sig, "HWP0C80") == 0) {
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__u8 val;
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eisa_irqs = eisa_hwp_irqs;
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irq_index = (inb(io_addr + 0xc85) & 0x7) - 1;
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val = inb(io_addr + 0x4);
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scsi_id = ffs(val) - 1;
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if(scsi_id > 7 || (val & ~(1<<scsi_id)) != 0) {
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printk(KERN_ERR "sim710.c, EISA card %s has incorrect scsi_id, setting to 7\n", dev_name(dev));
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scsi_id = 7;
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}
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} else {
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eisa_irqs = eisa_cpq_irqs;
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irq_index = inb(io_addr + 0xc88) & 0x07;
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}
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if(irq_index >= strlen(eisa_irqs)) {
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printk("sim710.c: irq nasty\n");
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return -ENODEV;
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}
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irq = eisa_irqs[irq_index];
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return sim710_probe_common(dev, io_addr, irq, 50,
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differential, scsi_id);
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}
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static struct eisa_driver sim710_eisa_driver = {
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.id_table = sim710_eisa_ids,
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.driver = {
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.name = "sim710",
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.probe = sim710_eisa_probe,
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.remove = __devexit_p(sim710_device_remove),
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},
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};
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#endif /* CONFIG_EISA */
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static int __init sim710_init(void)
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{
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int err = -ENODEV;
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#ifdef MODULE
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if (sim710)
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param_setup(sim710);
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#endif
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#ifdef CONFIG_MCA
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err = mca_register_driver(&sim710_mca_driver);
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#endif
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#ifdef CONFIG_EISA
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err = eisa_driver_register(&sim710_eisa_driver);
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#endif
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/* FIXME: what we'd really like to return here is -ENODEV if
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* no devices have actually been found. Instead, the err
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* above actually only reports problems with kobject_register,
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* so for the moment return success */
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return 0;
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}
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static void __exit sim710_exit(void)
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{
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#ifdef CONFIG_MCA
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if (MCA_bus)
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mca_unregister_driver(&sim710_mca_driver);
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#endif
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#ifdef CONFIG_EISA
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eisa_driver_unregister(&sim710_eisa_driver);
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#endif
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}
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module_init(sim710_init);
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module_exit(sim710_exit);
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