From: Ley Foon Tan <ley.foon.tan@intel.com>
To: Bjorn Helgaas <bhelgaas@google.com>
Cc: linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org,
lftan.linux@gmail.com, stable@vger.kernel.org,
Ley Foon Tan <ley.foon.tan@intel.com>
Subject: [PATCH] PCI: altera: Fix TLP_CFG_DW0 for TLP write
Date: Tue, 28 Feb 2017 18:31:16 +0800 [thread overview]
Message-ID: <1488277876-29859-1-git-send-email-ley.foon.tan@intel.com> (raw)
Commit eb5767122feba1 used the TLP_FMTTYPE_CFGRD* for TLP write operation
and this cause writing to configuration space will fail. This patch
fix it by using correct FMTTYPE for write operation.
Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>
---
drivers/pci/host/pcie-altera.c | 10 +++++++---
1 file changed, 7 insertions(+), 3 deletions(-)
diff --git a/drivers/pci/host/pcie-altera.c b/drivers/pci/host/pcie-altera.c
index 0c15402..68c839f 100644
--- a/drivers/pci/host/pcie-altera.c
+++ b/drivers/pci/host/pcie-altera.c
@@ -57,10 +57,14 @@
#define TLP_WRITE_TAG 0x10
#define RP_DEVFN 0
#define TLP_REQ_ID(bus, devfn) (((bus) << 8) | (devfn))
-#define TLP_CFG_DW0(pcie, bus) \
+#define TLP_CFGRD_DW0(pcie, bus) \
((((bus == pcie->root_bus_nr) ? TLP_FMTTYPE_CFGRD0 \
: TLP_FMTTYPE_CFGRD1) << 24) | \
TLP_PAYLOAD_SIZE)
+#define TLP_CFGWR_DW0(pcie, bus) \
+ ((((bus == pcie->root_bus_nr) ? TLP_FMTTYPE_CFGWR0 \
+ : TLP_FMTTYPE_CFGWR1) << 24) | \
+ TLP_PAYLOAD_SIZE)
#define TLP_CFG_DW1(pcie, tag, be) \
(((TLP_REQ_ID(pcie->root_bus_nr, RP_DEVFN)) << 16) | (tag << 8) | (be))
#define TLP_CFG_DW2(bus, devfn, offset) \
@@ -222,7 +226,7 @@ static int tlp_cfg_dword_read(struct altera_pcie *pcie, u8 bus, u32 devfn,
{
u32 headers[TLP_HDR_SIZE];
- headers[0] = TLP_CFG_DW0(pcie, bus);
+ headers[0] = TLP_CFGRD_DW0(pcie, bus);
headers[1] = TLP_CFG_DW1(pcie, TLP_READ_TAG, byte_en);
headers[2] = TLP_CFG_DW2(bus, devfn, where);
@@ -237,7 +241,7 @@ static int tlp_cfg_dword_write(struct altera_pcie *pcie, u8 bus, u32 devfn,
u32 headers[TLP_HDR_SIZE];
int ret;
- headers[0] = TLP_CFG_DW0(pcie, bus);
+ headers[0] = TLP_CFGWR_DW0(pcie, bus);
headers[1] = TLP_CFG_DW1(pcie, TLP_WRITE_TAG, byte_en);
headers[2] = TLP_CFG_DW2(bus, devfn, where);
--
1.8.2.3
next reply other threads:[~2017-02-28 10:31 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-02-28 10:31 Ley Foon Tan [this message]
2017-02-28 10:32 ` [PATCH] PCI: altera: Fix TLP_CFG_DW0 for TLP write Ley Foon Tan
-- strict thread matches above, loose matches on Subject: below --
2017-02-28 10:37 Ley Foon Tan
2017-02-28 10:39 ` Ley Foon Tan
2017-02-28 21:11 ` Bjorn Helgaas
2017-02-28 10:24 Ley Foon Tan
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=1488277876-29859-1-git-send-email-ley.foon.tan@intel.com \
--to=ley.foon.tan@intel.com \
--cc=bhelgaas@google.com \
--cc=lftan.linux@gmail.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-pci@vger.kernel.org \
--cc=stable@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
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;
as well as URLs for NNTP newsgroup(s).