Pci debug - Revision history

FabienM: /* Links */

2021-04-21T14:23:47Z

‎Links

FabienM: /* Buildroot configuration */

2015-08-27T06:49:35Z

‎Buildroot configuration

WikiSysop: /* Buildroot configuration */

2015-03-17T10:41:29Z

‎Buildroot configuration

WikiSysop: /* Using pci_debug */

2015-03-17T10:34:33Z

‎Using pci_debug

WikiSysop: /* Introduction */

2015-03-17T10:33:24Z

‎Introduction

FabienM: /* Links */

2015-02-04T16:57:20Z

‎Links

FabienM: New page: Category: PCIe Category: APF6 = Introduction = '''pci_debug''' is a usefull binary used to access PCIe BARx memory in userland. = Buildroot configuration = * Readline is requir...

2015-02-04T16:56:02Z

New page: Category: PCIe Category: APF6 = Introduction = '''pci_debug''' is a usefull binary used to access PCIe BARx memory in userland. = Buildroot configuration = * Readline is requir...

New page

[[Category: PCIe]]
[[Category: APF6]]

= Introduction =

'''pci_debug''' is a usefull binary used to access PCIe BARx memory in userland.

= Buildroot configuration =

* Readline is required to install pci_debug :
<pre class="config">
Target packages --->
Libraries --->
Text and terminal handling --->
[*] readline
</pre>

* Select pci_debug in armadeus tools :
<pre class="config">
Target packages --->
Armadeus specific tools/utilities --->
[*] pcidebug
</pre>

* then build your bsp with make.

= Using pci_debug =

* First find your pci device name with lspci :
<pre class="apf">
# lspci
00:00.0 PCI bridge: Device 16c3:abcd (rev 01)
01:00.0 Unclassified device [0013]: Altera Corporation Device e001 (rev 01)
</pre>
For example here, we want to access altera pci device, then name is : '''01:00.0'''

* Launch pci_debug with the BAR number in option (-b) :
<pre class="apf">
# pci_debug -s 01:00.0 -b0
# ./pci_debug -s 01:00.0 -b0

PCI debug
---------

- accessing BAR0
- region size is 4194304-bytes
- offset into region is 0-bytes

? Help
d[width] addr len Display memory starting from addr
[width]
8 - 8-bit access
16 - 16-bit access
32 - 32-bit access (default)
c[width] addr val Change memory at addr to val
e Print the endian access mode
e[mode] Change the endian access mode
[mode]
b - big-endian (default)
l - little-endian
f[width] addr val len inc Fill memory
addr - start address
val - start value
len - length (in bytes)
inc - increment (defaults to 1)
q Quit

Notes:
1. addr, len, and val are interpreted as hex values
addresses are always byte based

PCI>
</pre>

* You can then access BAR0 memory on '''PCI>''' prompt.
* Reading 0x20 values from address 0 :
<pre class="apf">
PCI> d32 0 20

00000000: 12345678 12345678 12345678 12345678
00000010: 12345678 12345678 12345678 12345678

PCI>
</pre>

= Links =

← Older revision		Revision as of 14:23, 21 April 2021
Line 81:		Line 81:
	= Links =		= Links =

−	This tool come from an altera [http://www.alteraforum.com/forum/showthread.php?t=35678 forum post], and the archive code can be found [~~http~~://~~www~~.~~ovro.caltech.edu~~/~~%7Edwh~~/~~correlator/pdf/altera_pcie.zip~~ here].	+	This tool come from an altera [http://www.alteraforum.com/forum/showthread.php?t=35678 forum post], and the archive code can be found [https://github.com/Martoni/pcie_debug here].

@@ Line 7: / Line 7: @@
 == Buildroot configuration ==
-* Should be done by default on [[APF6]]
+* Should be done by default on [[APF6_SP]]
 * Select pci_debug:
 <pre class="config">

← Older revision		Revision as of 16:57, 4 February 2015
Line 86:		Line 86:

	= Links =		= Links =
		+
		+	This tool come from an altera [http://www.alteraforum.com/forum/showthread.php?t=35678 forum post], and the archive code can be found [http://www.ovro.caltech.edu/%7Edwh/correlator/pdf/altera_pcie.zip here].

@@ Line 6: / Line 6: @@
 '''pci_debug''' is a useful tool meant to access PCIe BARx memory from userspace.
-= Buildroot configuration =
+== Buildroot configuration ==
+* Should be done by default on [[APF6]]
-* Readline is required to install pci_debug :
+* Select pci_debug:
 <pre class="config">
 Target packages  --->
-     Libraries  --->
+     Hardware handling  --->
-         Text and terminal handling  --->
+         [*] pcidebug
-            [*] readline
 </pre>
-* Select pci_debug in armadeus tools :
+* then rebuild your BSP:
-<pre class="config">
+<pre class="host">
-Target packages  --->
+$ make
-    Armadeus specific tools/utilities  --->
-        [*] pcidebug
 </pre>
 = Using pci_debug =

@@ Line 27: / Line 27: @@
 = Using pci_debug =
-* First find your pci device name with lspci :
+* First find your PCI device name with lspci :
 <pre class="apf">
 # lspci
@@ Line 33: / Line 33: @@
 :00.0 Unclassified device [0013]: Altera Corporation Device e001 (rev 01)
 </pre>
-For example here, we want to access altera pci device, then name is : '''01:00.0'''
+For example here, we want to access Altera PCI device, then name is : '''01:00.0'''
 * Launch pci_debug with the BAR number in option (-b) :
@@ Line 83: / Line 83: @@
 PCI>
 </pre>
 = Links =
 This tool come from an altera [http://www.alteraforum.com/forum/showthread.php?t=35678 forum post], and the archive code can be found [http://www.ovro.caltech.edu/%7Edwh/correlator/pdf/altera_pcie.zip here].

@@ Line 4: / Line 4: @@
 = Introduction =
-'''pci_debug''' is a usefull binary used to access PCIe BARx memory in userland.
+'''pci_debug''' is a useful tool meant to access PCIe BARx memory from userspace.
 = Buildroot configuration =