From: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
To: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>,
Sascha Hauer <s.hauer@pengutronix.de>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>,
barebox@lists.infradead.org
Subject: [PATCH v3 5/8] pci: ensure device does ignore BAR mangling
Date: Wed, 30 Jul 2014 10:39:37 +0200 [thread overview]
Message-ID: <1406709580-5585-6-git-send-email-sebastian.hesselbarth@gmail.com> (raw)
In-Reply-To: <1406709580-5585-1-git-send-email-sebastian.hesselbarth@gmail.com>
Disable access to PCI devices I/O and memory regions while
mangling BAR registers.
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
---
Changelog:
v2->v3:
- new patch
Cc: barebox@lists.infradead.org
Cc: Antony Pavlov <antonynpavlov@gmail.com>
Cc: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Cc: Lucas Stach <l.stach@pengutronix.de>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
---
drivers/pci/pci.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index f58e2c98f185..b64f25d13282 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -191,6 +191,10 @@ unsigned int pci_scan_bus(struct pci_bus *bus)
continue;
}
+ pci_read_config_byte(dev, PCI_COMMAND, &cmd);
+ pci_write_config_byte(dev, PCI_COMMAND,
+ cmd & ~(PCI_COMMAND_IO | PCI_COMMAND_MEMORY));
+
for (bar = 0; bar < 6; bar++) {
resource_size_t last_addr;
@@ -233,6 +237,7 @@ unsigned int pci_scan_bus(struct pci_bus *bus)
bar++;
}
+ pci_write_config_byte(dev, PCI_COMMAND, cmd);
list_add_tail(&dev->bus_list, &bus->devices);
pci_register_device(dev);
}
--
2.0.0
_______________________________________________
barebox mailing list
barebox@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/barebox
next prev parent reply other threads:[~2014-07-30 8:40 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-30 8:39 [PATCH v3 0/8] Marvell EBU PCIe driver Sebastian Hesselbarth
2014-07-30 8:39 ` [PATCH v3 1/8] bus: mvebu: fix resource size handling Sebastian Hesselbarth
2014-07-30 8:39 ` [PATCH v3 2/8] ARM: mvebu: armada-370-xp: disable MBUS error propagation Sebastian Hesselbarth
2014-07-30 8:39 ` [PATCH v3 3/8] pci: pci_scan_bus: respect 64b BARs Sebastian Hesselbarth
2014-07-30 8:39 ` [PATCH v3 4/8] pci: register device after BAR setup Sebastian Hesselbarth
2014-07-30 8:39 ` Sebastian Hesselbarth [this message]
2014-07-30 8:39 ` [PATCH v3 6/8] pci: set auto-incremented bus number Sebastian Hesselbarth
2014-07-30 8:39 ` [PATCH v3 7/8] of: pci: import of_pci_get_devfn() Sebastian Hesselbarth
2014-07-30 8:39 ` [PATCH v3 8/8] pci: mvebu: Add PCIe driver Sebastian Hesselbarth
2014-07-30 9:16 ` [PATCH v3 0/8] Marvell EBU " Lucas Stach
2014-07-31 5:30 ` Sascha Hauer
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=1406709580-5585-6-git-send-email-sebastian.hesselbarth@gmail.com \
--to=sebastian.hesselbarth@gmail.com \
--cc=barebox@lists.infradead.org \
--cc=s.hauer@pengutronix.de \
--cc=thomas.petazzoni@free-electrons.com \
/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