From: Richard Yang <weiyang@linux.vnet.ibm.com>
To: linux-pci@vger.kernel.org
Cc: Ram Pai <linuxram@us.ibm.com>, Gavin Shan <shangw@linux.vnet.ibm.com>
Subject: One chart on pci bridge and its bus and their children
Date: Tue, 5 Jun 2012 11:26:27 +0800 [thread overview]
Message-ID: <20120605032627.GA23271@richard> (raw)
All,
I draw a chart on the relationship of bridge/bus/devics.
I am not sure it is exact, so please correct me if it is not correct.
BTW, the pci_bus->self, pci_bus->bridge seem to point the same thing.
So this is really necessary to do this?
Bus 0(pci_bus)
+--------------------+<----+
| | |
+--------------------+ |
|
|
Bridge(pci_dev) |
+--------------------+<----|---+--------------+
|subordinate(pci_bus)|-+ | | |
+--------------------+ | | | |
| | | |
| | | |
| | | |
Bus 1(pci_bus) | | | |
+--->+-------------------+<-+ | | |
| |parent(pci_bus) |------+ | |
| +-------------------+ | |
| |self(pci_dev) |----------+ |
| |bridge(device) | |
| +-------------------+ |
| |devices(list_head) | |
| +--------+----------+ |
| | |
| ----+--+---+---- |
pci_dev | | | pci_dev |
+---------------+<--|----------+ +--------->+-----------------+ |
|bus(pci_bus) |---+ |bus(pci_bus) | |
+---------------+ +-----------------+ |
|dev.parent | |dev.parent |---+
+---------------+ +-----------------+
--
Richard Yang
Help you, Help me
next reply other threads:[~2012-06-05 3:26 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-06-05 3:26 Richard Yang [this message]
2012-06-05 4:11 ` One chart on pci bridge and its bus and their children Ram Pai
2012-06-05 4:37 ` Bjorn Helgaas
2012-06-05 5:18 ` Yinghai Lu
2012-06-05 5:20 ` Yinghai Lu
2012-06-05 5:41 ` Richard Yang
2012-06-05 6:35 ` Ram Pai
2012-06-05 14:41 ` Jiang Liu
2012-06-05 16:40 ` Ram Pai
2012-06-06 1:58 ` Ram Pai
2012-06-05 19:38 ` Yinghai Lu
2012-06-06 5:28 ` Richard Yang
2012-06-06 7:58 ` Richard Yang
2012-06-05 21:52 ` Gavin Shan
2012-06-05 6:02 ` Richard Yang
2012-06-05 14:32 ` Jiang Liu
2012-06-05 14:37 ` Jiang Liu
2012-06-05 19:41 ` Yinghai Lu
2012-06-05 5:33 ` Richard Yang
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