From: arnd@arndb•de (Arnd Bergmann)
To: linux-arm-kernel@lists•infradead.org
Subject: [PATCH 0/3] [ARM] tegra: PCI Express support
Date: Thu, 16 Sep 2010 19:12:12 +0200 [thread overview]
Message-ID: <201009161912.12330.arnd@arndb.de> (raw)
In-Reply-To: <cover.1284655723.git.mike@compulab.co.il>
On Thursday 16 September 2010 18:53:33 Mike Rapoport wrote:
> These patches enable PCI Express support on Tegra2.
> The implementation is based on original NVidia code from (1), but it
> is heavily reworked to avoid custom PCI enumeration and make the code
> more Linux friendly.
>
> This implementation assumes that the PCIe subsystem is fully powered
> and ungated by the bootloader.
The patches look good to me, but it seems that I/O space accesses are
still broken and need to be redirected to the PCI I/O range, like
the (totally untested) patch below.
Signed-off-by: Arnd Bergmann <arnd@arndb•de>
diff --git a/arch/arm/mach-tegra/include/mach/io.h b/arch/arm/mach-tegra/include/mach/io.h
index 35edfc3..d54e384 100644
--- a/arch/arm/mach-tegra/include/mach/io.h
+++ b/arch/arm/mach-tegra/include/mach/io.h
@@ -21,7 +21,8 @@
#ifndef __MACH_TEGRA_IO_H
#define __MACH_TEGRA_IO_H
-#define IO_SPACE_LIMIT 0xffffffff
+/* Two 1MB windows */
+#define IO_SPACE_LIMIT (SZ_1M + SZ_1M - 1)
/* On TEGRA, many peripherals are very closely packed in
* two 256MB io windows (that actually only use about 64KB
@@ -69,7 +70,7 @@ void tegra_iounmap(volatile void __iomem *addr);
static inline void __iomem *__io(unsigned long addr)
{
- return (void __iomem *)addr;
+ return addr + tegra_pcie.regs + SZ_4M;
}
#define __io(a) __io(a)
#define __mem_pci(a) (a)
next prev parent reply other threads:[~2010-09-16 17:12 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-16 16:53 [PATCH 0/3] [ARM] tegra: PCI Express support Mike Rapoport
2010-09-16 16:53 ` [PATCH 1/3] [ARM] tegra: add PCI Express clocks Mike Rapoport
2010-09-16 21:27 ` Colin Cross
2010-09-16 22:27 ` Mike Rapoport
2010-09-17 0:14 ` Gary King
2010-09-19 7:54 ` Mike Rapoport
2010-09-16 23:53 ` Mogambo Park
2010-09-19 7:52 ` Mike Rapoport
2010-09-16 16:53 ` [PATCH 2/3] [ARM] tegra: add PCI Express support Mike Rapoport
2010-09-16 21:42 ` Colin Cross
2010-09-16 22:16 ` Mike Rapoport
2010-09-16 16:53 ` [PATCH 3/3] [ARM] tegra: harmony: enable PCI Express Mike Rapoport
2010-09-16 21:44 ` Colin Cross
2010-09-16 21:57 ` Mike Rapoport
2010-09-16 17:12 ` Arnd Bergmann [this message]
2010-09-19 14:07 ` [PATCH 0/3] [ARM] tegra: PCI Express support Mike Rapoport
2010-09-19 14:39 ` Arnd Bergmann
2010-09-19 15:02 ` Russell King - ARM Linux
2010-09-19 16:34 ` Arnd Bergmann
2010-09-19 16:40 ` Russell King - ARM Linux
2010-09-19 17:09 ` Arnd Bergmann
2010-09-19 15:36 ` Mike Rapoport
2010-09-19 16:01 ` Russell King - ARM Linux
2010-09-20 7:15 ` Mike Rapoport
2010-09-20 9:13 ` Arnd Bergmann
2010-09-20 9:58 ` Russell King - ARM Linux
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=201009161912.12330.arnd@arndb.de \
--to=arnd@arndb$(echo .)de \
--cc=linux-arm-kernel@lists$(echo .)infradead.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox