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Date: Fri, 2 May 2008 17:03:06 -0600 From: "Moore, Eric" <Eric.Moore@....com> To: "Andi Kleen" <andi@...stfloor.org> Cc: <linux-kernel@...r.kernel.org> Subject: RE: HELP: Is writeq an atomic operation?? On Friday, May 02, 2008 4:50 PM, Andi Kleen wrote: > > > Here is a trace from pci express analyzer. I'm sending > > With what CPU/chipset was that? > I'm developing sas driver for next generation controllers. They should work at least on x86, x86_64, ia64, and ppc64. The host I was using for gathering that trace was x86_64 Intel Platform. Here is the lspci output: 00:00.0 Host bridge: Intel Corporation E7520 Memory Controller Hub (rev 0c) Subsystem: Super Micro Computer Inc Unknown device 5480 Flags: bus master, fast devsel, latency 0 Capabilities: [40] Vendor Specific Information 00:00.1 Class ff00: Intel Corporation E7525/E7520 Error Reporting Registers (rev 0c) Subsystem: Super Micro Computer Inc Unknown device 5480 Flags: fast devsel 00:01.0 System peripheral: Intel Corporation E7520 DMA Controller (rev 0c) Subsystem: Super Micro Computer Inc Unknown device 5480 Flags: fast devsel, IRQ 5 Memory at dd000000 (32-bit, non-prefetchable) [size=4K] Capabilities: [b0] Message Signalled Interrupts: Mask- 64bit- Queue=0/1 Enable- 00:02.0 PCI bridge: Intel Corporation E7525/E7520/E7320 PCI Express Port A (rev 0c) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0 Bus: primary=00, secondary=01, subordinate=01, sec-latency=0 I/O behind bridge: 00002000-00002fff Memory behind bridge: dd100000-dd1fffff Prefetchable memory behind bridge: 0000000088000000-00000000880fffff Capabilities: [50] Power Management version 2 Capabilities: [58] Message Signalled Interrupts: Mask- 64bit- Queue=0/1 Enable- Capabilities: [64] Express Root Port (Slot-) IRQ 0 Capabilities: [100] Advanced Error Reporting 00:03.0 PCI bridge: Intel Corporation E7525/E7520/E7320 PCI Express Port A1 (rev 0c) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0 Bus: primary=00, secondary=02, subordinate=04, sec-latency=0 I/O behind bridge: 00003000-00003fff Memory behind bridge: dd200000-dd3fffff Capabilities: [50] Power Management version 2 Capabilities: [58] Message Signalled Interrupts: Mask- 64bit- Queue=0/1 Enable- Capabilities: [64] Express Root Port (Slot-) IRQ 0 Capabilities: [100] Advanced Error Reporting 00:04.0 PCI bridge: Intel Corporation E7525/E7520 PCI Express Port B (rev 0c) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0 Bus: primary=00, secondary=05, subordinate=05, sec-latency=0 Capabilities: [50] Power Management version 2 Capabilities: [58] Message Signalled Interrupts: Mask- 64bit- Queue=0/1 Enable- Capabilities: [64] Express Root Port (Slot-) IRQ 0 Capabilities: [100] Advanced Error Reporting 00:06.0 PCI bridge: Intel Corporation E7520 PCI Express Port C (rev 0c) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0 Bus: primary=00, secondary=06, subordinate=06, sec-latency=0 Capabilities: [50] Power Management version 2 Capabilities: [58] Message Signalled Interrupts: Mask- 64bit- Queue=0/1 Enable- Capabilities: [64] Express Root Port (Slot-) IRQ 0 Capabilities: [100] Advanced Error Reporting 00:1d.0 USB Controller: Intel Corporation 82801EB/ER (ICH5/ICH5R) USB UHCI Controller #1 (rev 02) (prog-if 00 [UHCI]) Subsystem: Super Micro Computer Inc Unknown device 5480 Flags: bus master, medium devsel, latency 0, IRQ 16 I/O ports at 1400 [size=32] 00:1d.1 USB Controller: Intel Corporation 82801EB/ER (ICH5/ICH5R) USB UHCI Controller #2 (rev 02) (prog-if 00 [UHCI]) Subsystem: Super Micro Computer Inc Unknown device 5480 Flags: bus master, medium devsel, latency 0, IRQ 19 I/O ports at 1420 [size=32] 00:1d.2 USB Controller: Intel Corporation 82801EB/ER (ICH5/ICH5R) USB UHCI Controller #3 (rev 02) (prog-if 00 [UHCI]) Subsystem: Super Micro Computer Inc Unknown device 5480 Flags: bus master, medium devsel, latency 0, IRQ 20 I/O ports at 1440 [size=32] 00:1d.3 USB Controller: Intel Corporation 82801EB/ER (ICH5/ICH5R) USB UHCI Controller #4 (rev 02) (prog-if 00 [UHCI]) Subsystem: Super Micro Computer Inc Unknown device 5480 Flags: bus master, medium devsel, latency 0, IRQ 16 I/O ports at 1460 [size=32] 00:1d.7 USB Controller: Intel Corporation 82801EB/ER (ICH5/ICH5R) USB2 EHCI Controller (rev 02) (prog-if 20 [EHCI]) Subsystem: Super Micro Computer Inc Unknown device 5480 Flags: bus master, medium devsel, latency 0, IRQ 21 Memory at dd001000 (32-bit, non-prefetchable) [size=1K] Capabilities: [50] Power Management version 2 Capabilities: [58] Debug port 00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev c2) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0 Bus: primary=00, secondary=07, subordinate=07, sec-latency=32 I/O behind bridge: 00004000-00004fff Memory behind bridge: dd400000-deffffff Prefetchable memory behind bridge: 88100000-881fffff 00:1f.0 ISA bridge: Intel Corporation 82801EB/ER (ICH5/ICH5R) LPC Interface Bridge (rev 02) Flags: bus master, medium devsel, latency 0 00:1f.2 IDE interface: Intel Corporation 82801EB (ICH5) SATA Controller (rev 02) (prog-if 8a [Master SecP PriP]) Subsystem: Super Micro Computer Inc Unknown device 5480 Flags: bus master, 66MHz, medium devsel, latency 0, IRQ 20 I/O ports at 01f0 [size=8] I/O ports at 03f4 [size=1] I/O ports at 0170 [size=8] I/O ports at 0374 [size=1] I/O ports at 14b0 [size=16] 00:1f.3 SMBus: Intel Corporation 82801EB/ER (ICH5/ICH5R) SMBus Controller (rev 02) Subsystem: Super Micro Computer Inc Unknown device 5480 Flags: medium devsel, IRQ 22 I/O ports at 1100 [size=32] 01:00.0 Mass storage controller [0108]: LSI Logic / Symbios Logic Unknown device 0077 (rev ff) Subsystem: Compaq Computer Corporation Unknown device 40a0 Flags: bus master, fast devsel, latency 0, IRQ 5 I/O ports at 2000 [size=256] Memory at dd140000 (64-bit, non-prefetchable) [size=16K] [virtual] Expansion ROM at 88000000 [disabled] [size=64K] Capabilities: [50] Power Management version 3 Capabilities: [68] Express Endpoint IRQ 0 Capabilities: [d0] Vital Product Data Capabilities: [a8] Message Signalled Interrupts: Mask- 64bit+ Queue=0/0 Enable- Capabilities: [c0] MSI-X: Enable- Mask- TabSize=15 Capabilities: [100] Advanced Error Reporting Capabilities: [138] Power Budgeting 02:00.0 PCI bridge: Intel Corporation 6700PXH PCI Express-to-PCI Bridge A (rev 09) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0 Bus: primary=02, secondary=03, subordinate=03, sec-latency=64 Capabilities: [44] Express PCI/PCI-X Bridge IRQ 0 Capabilities: [5c] Message Signalled Interrupts: Mask- 64bit+ Queue=0/0 Enable- Capabilities: [6c] Power Management version 2 Capabilities: [d8] PCI-X bridge device Capabilities: [100] Advanced Error Reporting Capabilities: [300] Power Budgeting 02:00.1 PIC: Intel Corporation 6700/6702PXH I/OxAPIC Interrupt Controller A (rev 09) (prog-if 20 [IO(X)-APIC]) Subsystem: Super Micro Computer Inc Unknown device 5480 Flags: bus master, fast devsel, latency 0 Memory at dd200000 (32-bit, non-prefetchable) [size=4K] Capabilities: [44] Express Endpoint IRQ 0 Capabilities: [6c] Power Management version 2 02:00.2 PCI bridge: Intel Corporation 6700PXH PCI Express-to-PCI Bridge B (rev 09) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0 Bus: primary=02, secondary=04, subordinate=04, sec-latency=64 I/O behind bridge: 00003000-00003fff Memory behind bridge: dd300000-dd3fffff Capabilities: [44] Express PCI/PCI-X Bridge IRQ 0 Capabilities: [5c] Message Signalled Interrupts: Mask- 64bit+ Queue=0/0 Enable- Capabilities: [6c] Power Management version 2 Capabilities: [d8] PCI-X bridge device Capabilities: [100] Advanced Error Reporting Capabilities: [300] Power Budgeting 02:00.3 PIC: Intel Corporation 6700PXH I/OxAPIC Interrupt Controller B (rev 09) (prog-if 20 [IO(X)-APIC]) Subsystem: Super Micro Computer Inc Unknown device 5480 Flags: bus master, fast devsel, latency 0 Memory at dd201000 (32-bit, non-prefetchable) [size=4K] Capabilities: [44] Express Endpoint IRQ 0 Capabilities: [6c] Power Management version 2 04:02.0 Ethernet controller: Intel Corporation 82546GB Gigabit Ethernet Controller (rev 03) Subsystem: Intel Corporation PRO/1000 MT Dual Port Server Adapter Flags: bus master, 66MHz, medium devsel, latency 64, IRQ 17 Memory at dd300000 (64-bit, non-prefetchable) [size=128K] I/O ports at 3000 [size=64] Capabilities: [dc] Power Management version 2 Capabilities: [e4] PCI-X non-bridge device Capabilities: [f0] Message Signalled Interrupts: Mask- 64bit+ Queue=0/0 Enable- 04:02.1 Ethernet controller: Intel Corporation 82546GB Gigabit Ethernet Controller (rev 03) Subsystem: Intel Corporation PRO/1000 MT Dual Port Server Adapter Flags: bus master, 66MHz, medium devsel, latency 64, IRQ 18 Memory at dd320000 (64-bit, non-prefetchable) [size=128K] I/O ports at 3040 [size=64] Capabilities: [dc] Power Management version 2 Capabilities: [e4] PCI-X non-bridge device Capabilities: [f0] Message Signalled Interrupts: Mask- 64bit+ Queue=0/0 Enable- 07:01.0 VGA compatible controller: ATI Technologies Inc Rage XL (rev 27) (prog-if 00 [VGA]) Subsystem: Super Micro Computer Inc Unknown device 5480 Flags: bus master, stepping, medium devsel, latency 66, IRQ 10 Memory at de000000 (32-bit, non-prefetchable) [size=16M] I/O ports at 4000 [size=256] Memory at dd400000 (32-bit, non-prefetchable) [size=4K] [virtual] Expansion ROM at 88100000 [disabled] [size=128K] Capabilities: [5c] Power Management version 2 -- To unsubscribe from 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