mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-27 03:10:12 +00:00
![Mike Rapoport](/assets/img/avatar_default.png)
Patch series "mm: consolidate definitions of page table accessors", v2. The low level page table accessors (pXY_index(), pXY_offset()) are duplicated across all architectures and sometimes more than once. For instance, we have 31 definition of pgd_offset() for 25 supported architectures. Most of these definitions are actually identical and typically it boils down to, e.g. static inline unsigned long pmd_index(unsigned long address) { return (address >> PMD_SHIFT) & (PTRS_PER_PMD - 1); } static inline pmd_t *pmd_offset(pud_t *pud, unsigned long address) { return (pmd_t *)pud_page_vaddr(*pud) + pmd_index(address); } These definitions can be shared among 90% of the arches provided XYZ_SHIFT, PTRS_PER_XYZ and xyz_page_vaddr() are defined. For architectures that really need a custom version there is always possibility to override the generic version with the usual ifdefs magic. These patches introduce include/linux/pgtable.h that replaces include/asm-generic/pgtable.h and add the definitions of the page table accessors to the new header. This patch (of 12): The linux/mm.h header includes <asm/pgtable.h> to allow inlining of the functions involving page table manipulations, e.g. pte_alloc() and pmd_alloc(). So, there is no point to explicitly include <asm/pgtable.h> in the files that include <linux/mm.h>. The include statements in such cases are remove with a simple loop: for f in $(git grep -l "include <linux/mm.h>") ; do sed -i -e '/include <asm\/pgtable.h>/ d' $f done Signed-off-by: Mike Rapoport <rppt@linux.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Cain <bcain@codeaurora.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Chris Zankel <chris@zankel.net> Cc: "David S. Miller" <davem@davemloft.net> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Greentime Hu <green.hu@gmail.com> Cc: Greg Ungerer <gerg@linux-m68k.org> Cc: Guan Xuetao <gxt@pku.edu.cn> Cc: Guo Ren <guoren@kernel.org> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Helge Deller <deller@gmx.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: Ley Foon Tan <ley.foon.tan@intel.com> Cc: Mark Salter <msalter@redhat.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Matt Turner <mattst88@gmail.com> Cc: Max Filippov <jcmvbkbc@gmail.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Michal Simek <monstr@monstr.eu> Cc: Mike Rapoport <rppt@kernel.org> Cc: Nick Hu <nickhu@andestech.com> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Richard Weinberger <richard@nod.at> Cc: Rich Felker <dalias@libc.org> Cc: Russell King <linux@armlinux.org.uk> Cc: Stafford Horne <shorne@gmail.com> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Tony Luck <tony.luck@intel.com> Cc: Vincent Chen <deanbo422@gmail.com> Cc: Vineet Gupta <vgupta@synopsys.com> Cc: Will Deacon <will@kernel.org> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Link: http://lkml.kernel.org/r/20200514170327.31389-1-rppt@kernel.org Link: http://lkml.kernel.org/r/20200514170327.31389-2-rppt@kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
174 lines
4 KiB
C
174 lines
4 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
/* -*- mode: c; c-basic-offset: 8 -*- */
|
|
|
|
/* PARISC LASI driver for the 53c700 chip
|
|
*
|
|
* Copyright (C) 2001 by James.Bottomley@HansenPartnership.com
|
|
**-----------------------------------------------------------------------------
|
|
**
|
|
**
|
|
**-----------------------------------------------------------------------------
|
|
*/
|
|
|
|
/*
|
|
* Many thanks to Richard Hirst <rhirst@linuxcare.com> for patiently
|
|
* debugging this driver on the parisc architecture and suggesting
|
|
* many improvements and bug fixes.
|
|
*
|
|
* Thanks also go to Linuxcare Inc. for providing several PARISC
|
|
* machines for me to debug the driver on.
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/module.h>
|
|
#include <linux/init.h>
|
|
#include <linux/types.h>
|
|
#include <linux/stat.h>
|
|
#include <linux/mm.h>
|
|
#include <linux/blkdev.h>
|
|
#include <linux/ioport.h>
|
|
#include <linux/dma-mapping.h>
|
|
#include <linux/slab.h>
|
|
|
|
#include <asm/page.h>
|
|
#include <asm/irq.h>
|
|
#include <asm/hardware.h>
|
|
#include <asm/parisc-device.h>
|
|
#include <asm/delay.h>
|
|
|
|
#include <scsi/scsi_host.h>
|
|
#include <scsi/scsi_device.h>
|
|
#include <scsi/scsi_transport.h>
|
|
#include <scsi/scsi_transport_spi.h>
|
|
|
|
#include "53c700.h"
|
|
|
|
MODULE_AUTHOR("James Bottomley");
|
|
MODULE_DESCRIPTION("lasi700 SCSI Driver");
|
|
MODULE_LICENSE("GPL");
|
|
|
|
#define LASI_700_SVERSION 0x00071
|
|
#define LASI_710_SVERSION 0x00082
|
|
|
|
#define LASI700_ID_TABLE { \
|
|
.hw_type = HPHW_FIO, \
|
|
.sversion = LASI_700_SVERSION, \
|
|
.hversion = HVERSION_ANY_ID, \
|
|
.hversion_rev = HVERSION_REV_ANY_ID, \
|
|
}
|
|
|
|
#define LASI710_ID_TABLE { \
|
|
.hw_type = HPHW_FIO, \
|
|
.sversion = LASI_710_SVERSION, \
|
|
.hversion = HVERSION_ANY_ID, \
|
|
.hversion_rev = HVERSION_REV_ANY_ID, \
|
|
}
|
|
|
|
#define LASI700_CLOCK 25
|
|
#define LASI710_CLOCK 40
|
|
#define LASI_SCSI_CORE_OFFSET 0x100
|
|
|
|
static const struct parisc_device_id lasi700_ids[] __initconst = {
|
|
LASI700_ID_TABLE,
|
|
LASI710_ID_TABLE,
|
|
{ 0 }
|
|
};
|
|
|
|
static struct scsi_host_template lasi700_template = {
|
|
.name = "LASI SCSI 53c700",
|
|
.proc_name = "lasi700",
|
|
.this_id = 7,
|
|
.module = THIS_MODULE,
|
|
};
|
|
MODULE_DEVICE_TABLE(parisc, lasi700_ids);
|
|
|
|
static int __init
|
|
lasi700_probe(struct parisc_device *dev)
|
|
{
|
|
unsigned long base = dev->hpa.start + LASI_SCSI_CORE_OFFSET;
|
|
struct NCR_700_Host_Parameters *hostdata;
|
|
struct Scsi_Host *host;
|
|
|
|
hostdata = kzalloc(sizeof(*hostdata), GFP_KERNEL);
|
|
if (!hostdata) {
|
|
dev_printk(KERN_ERR, &dev->dev, "Failed to allocate host data\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
hostdata->dev = &dev->dev;
|
|
dma_set_mask(&dev->dev, DMA_BIT_MASK(32));
|
|
hostdata->base = ioremap(base, 0x100);
|
|
hostdata->differential = 0;
|
|
|
|
if (dev->id.sversion == LASI_700_SVERSION) {
|
|
hostdata->clock = LASI700_CLOCK;
|
|
hostdata->force_le_on_be = 1;
|
|
} else {
|
|
hostdata->clock = LASI710_CLOCK;
|
|
hostdata->force_le_on_be = 0;
|
|
hostdata->chip710 = 1;
|
|
hostdata->dmode_extra = DMODE_FC2;
|
|
hostdata->burst_length = 8;
|
|
}
|
|
|
|
host = NCR_700_detect(&lasi700_template, hostdata, &dev->dev);
|
|
if (!host)
|
|
goto out_kfree;
|
|
host->this_id = 7;
|
|
host->base = base;
|
|
host->irq = dev->irq;
|
|
if(request_irq(dev->irq, NCR_700_intr, IRQF_SHARED, "lasi700", host)) {
|
|
printk(KERN_ERR "lasi700: request_irq failed!\n");
|
|
goto out_put_host;
|
|
}
|
|
|
|
dev_set_drvdata(&dev->dev, host);
|
|
scsi_scan_host(host);
|
|
|
|
return 0;
|
|
|
|
out_put_host:
|
|
scsi_host_put(host);
|
|
out_kfree:
|
|
iounmap(hostdata->base);
|
|
kfree(hostdata);
|
|
return -ENODEV;
|
|
}
|
|
|
|
static int __exit
|
|
lasi700_driver_remove(struct parisc_device *dev)
|
|
{
|
|
struct Scsi_Host *host = dev_get_drvdata(&dev->dev);
|
|
struct NCR_700_Host_Parameters *hostdata =
|
|
(struct NCR_700_Host_Parameters *)host->hostdata[0];
|
|
|
|
scsi_remove_host(host);
|
|
NCR_700_release(host);
|
|
free_irq(host->irq, host);
|
|
iounmap(hostdata->base);
|
|
kfree(hostdata);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct parisc_driver lasi700_driver __refdata = {
|
|
.name = "lasi_scsi",
|
|
.id_table = lasi700_ids,
|
|
.probe = lasi700_probe,
|
|
.remove = __exit_p(lasi700_driver_remove),
|
|
};
|
|
|
|
static int __init
|
|
lasi700_init(void)
|
|
{
|
|
return register_parisc_driver(&lasi700_driver);
|
|
}
|
|
|
|
static void __exit
|
|
lasi700_exit(void)
|
|
{
|
|
unregister_parisc_driver(&lasi700_driver);
|
|
}
|
|
|
|
module_init(lasi700_init);
|
|
module_exit(lasi700_exit);
|