From: "Luis R. Rodriguez" <mcg...@suse.com> There is only one user but since we're going to bury MTRR next out of access to drivers, expose this last piece of API to drivers in a general fashion only needing io.h for access to helpers.
Signed-off-by: Luis R. Rodriguez <mcg...@suse.com> Cc: Toshi Kani <toshi.k...@hp.com> Cc: Thomas Gleixner <t...@linutronix.de> Cc: Ingo Molnar <mi...@redhat.com> Cc: "H. Peter Anvin" <h...@zytor.com> Cc: Will Deacon <will.dea...@arm.com> Cc: Thierry Reding <tred...@nvidia.com> Cc: Andrew Morton <a...@linux-foundation.org> Cc: Dave Hansen <dave.han...@linux.intel.com> Cc: Greg Kroah-Hartman <gre...@linuxfoundation.org> Cc: Catalin Marinas <catalin.mari...@arm.com> Cc: Abhilash Kesavan <a.kesa...@samsung.com> Cc: Matthias Brugger <matthias....@gmail.com> Cc: Cristian Stoica <cristian.sto...@freescale.com> Cc: dri-de...@lists.freedesktop.org Cc: Suresh Siddha <sbsid...@gmail.com> Cc: Linus Torvalds <torva...@linux-foundation.org> Cc: Juergen Gross <jgr...@suse.com> Cc: Daniel Vetter <daniel.vet...@ffwll.ch> Cc: Andy Lutomirski <l...@amacapital.net> Cc: Dave Airlie <airl...@redhat.com> Cc: Antonino Daplas <adap...@gmail.com> Cc: Jean-Christophe Plagniol-Villard <plagn...@jcrosoft.com> Cc: Tomi Valkeinen <tomi.valkei...@ti.com> Cc: Ville Syrjälä <syrj...@sci.fi> Cc: Mel Gorman <mgor...@suse.de> Cc: Vlastimil Babka <vba...@suse.cz> Cc: Davidlohr Bueso <dbu...@suse.de> Link: http://lkml.kernel.org/r/1429722736-4473-1-git-send-email-mcg...@do-not-panic.com Signed-off-by: Borislav Petkov <b...@suse.de> --- arch/x86/include/asm/io.h | 3 +++ arch/x86/include/asm/mtrr.h | 5 ----- arch/x86/kernel/cpu/mtrr/main.c | 6 +++--- drivers/gpu/drm/drm_ioctl.c | 14 +------------- include/linux/io.h | 7 +++++++ 5 files changed, 14 insertions(+), 21 deletions(-) diff --git a/arch/x86/include/asm/io.h b/arch/x86/include/asm/io.h index 4afc05ffa566..a2b97404922d 100644 --- a/arch/x86/include/asm/io.h +++ b/arch/x86/include/asm/io.h @@ -339,6 +339,9 @@ extern bool xen_biovec_phys_mergeable(const struct bio_vec *vec1, #define IO_SPACE_LIMIT 0xffff #ifdef CONFIG_MTRR +extern int __must_check arch_phys_wc_index(int handle); +#define arch_phys_wc_index arch_phys_wc_index + extern int __must_check arch_phys_wc_add(unsigned long base, unsigned long size); extern void arch_phys_wc_del(int handle); diff --git a/arch/x86/include/asm/mtrr.h b/arch/x86/include/asm/mtrr.h index a31759e1edd9..b94f6f64e23d 100644 --- a/arch/x86/include/asm/mtrr.h +++ b/arch/x86/include/asm/mtrr.h @@ -48,7 +48,6 @@ extern void mtrr_aps_init(void); extern void mtrr_bp_restore(void); extern int mtrr_trim_uncached_memory(unsigned long end_pfn); extern int amd_special_default_mtrr(void); -extern int phys_wc_to_mtrr_index(int handle); # else static inline u8 mtrr_type_lookup(u64 addr, u64 end, u8 *uniform) { @@ -84,10 +83,6 @@ static inline int mtrr_trim_uncached_memory(unsigned long end_pfn) static inline void mtrr_centaur_report_mcr(int mcr, u32 lo, u32 hi) { } -static inline int phys_wc_to_mtrr_index(int handle) -{ - return -1; -} #define mtrr_ap_init() do {} while (0) #define mtrr_bp_init() do {} while (0) diff --git a/arch/x86/kernel/cpu/mtrr/main.c b/arch/x86/kernel/cpu/mtrr/main.c index 04aceb7e6443..81baf5fee0e1 100644 --- a/arch/x86/kernel/cpu/mtrr/main.c +++ b/arch/x86/kernel/cpu/mtrr/main.c @@ -580,7 +580,7 @@ void arch_phys_wc_del(int handle) EXPORT_SYMBOL(arch_phys_wc_del); /* - * phys_wc_to_mtrr_index - translates arch_phys_wc_add's return value + * arch_phys_wc_index - translates arch_phys_wc_add's return value * @handle: Return value from arch_phys_wc_add * * This will turn the return value from arch_phys_wc_add into an mtrr @@ -590,14 +590,14 @@ EXPORT_SYMBOL(arch_phys_wc_del); * in printk line. Alas there is an illegitimate use in some ancient * drm ioctls. */ -int phys_wc_to_mtrr_index(int handle) +int arch_phys_wc_index(int handle) { if (handle < MTRR_TO_PHYS_WC_OFFSET) return -1; else return handle - MTRR_TO_PHYS_WC_OFFSET; } -EXPORT_SYMBOL_GPL(phys_wc_to_mtrr_index); +EXPORT_SYMBOL_GPL(arch_phys_wc_index); /* * HACK ALERT! diff --git a/drivers/gpu/drm/drm_ioctl.c b/drivers/gpu/drm/drm_ioctl.c index 266dcd6cdf3b..0a957828b3bd 100644 --- a/drivers/gpu/drm/drm_ioctl.c +++ b/drivers/gpu/drm/drm_ioctl.c @@ -36,9 +36,6 @@ #include <linux/pci.h> #include <linux/export.h> -#ifdef CONFIG_X86 -#include <asm/mtrr.h> -#endif static int drm_version(struct drm_device *dev, void *data, struct drm_file *file_priv); @@ -197,16 +194,7 @@ static int drm_getmap(struct drm_device *dev, void *data, map->type = r_list->map->type; map->flags = r_list->map->flags; map->handle = (void *)(unsigned long) r_list->user_token; - -#ifdef CONFIG_X86 - /* - * There appears to be exactly one user of the mtrr index: dritest. - * It's easy enough to keep it working on non-PAT systems. - */ - map->mtrr = phys_wc_to_mtrr_index(r_list->map->mtrr); -#else - map->mtrr = -1; -#endif + map->mtrr = arch_phys_wc_index(r_list->map->mtrr); mutex_unlock(&dev->struct_mutex); diff --git a/include/linux/io.h b/include/linux/io.h index 986f2bffea1e..04cce4da3685 100644 --- a/include/linux/io.h +++ b/include/linux/io.h @@ -111,6 +111,13 @@ static inline void arch_phys_wc_del(int handle) } #define arch_phys_wc_add arch_phys_wc_add +#ifndef arch_phys_wc_index +static inline int arch_phys_wc_index(int handle) +{ + return -1; +} +#define arch_phys_wc_index arch_phys_wc_index +#endif #endif #endif /* _LINUX_IO_H */ -- 1.9.0.258.g00eda23 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
