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SubjectRE: updated CDROMREADAUDIO DMA patch
Andrew,

I tried the patch on 2.4.21pre2. In the short time that it has been on,
it seems
to be working. To test, I did this before the patch:
cdda2wav -D /dev/cdrom -e -N, then fired up Quake3,
the game was very stuttery. CD music played fine. After patching,
the game played smooth, game sounds were smooth
as well as the CD music.

I will bat it around more and report any problems.

Thanks!

Tony

lspci - INTEL 845PESVL motherboard:
00:00.0 Host bridge: Intel Corp. 82845G/GL [Brookdale-G] Chipset Host
Bridge (rev 02)
Subsystem: Intel Corp. 82845G/GL [Brookdale-G] Chipset Host Bridge
Flags: bus master, fast devsel, latency 0
Memory at e0000000 (32-bit, prefetchable) [size=256M]
Capabilities: [e4] #09 [6105]
Capabilities: [a0] AGP version 2.0

00:01.0 PCI bridge: Intel Corp. 82845G/GL [Brookdale-G] Chipset AGP
Bridge (rev 02) (prog-if 00 [Normal decode])
Flags: bus master, 66Mhz, fast devsel, latency 32
Bus: primary=00, secondary=01, subordinate=01, sec-latency=32
Memory behind bridge: fc500000-fe5fffff
Prefetchable memory behind bridge: cc100000-dc2fffff

00:1d.0 USB Controller: Intel Corp. 82801DB USB (Hub #1) (rev 02)
(prog-if 00 [UHCI])
Subsystem: Intel Corp.: Unknown device 5356
Flags: bus master, medium devsel, latency 0, IRQ 16
I/O ports at e800 [size=32]

00:1d.1 USB Controller: Intel Corp. 82801DB USB (Hub #2) (rev 02)
(prog-if 00 [UHCI])
Subsystem: Intel Corp.: Unknown device 5356
Flags: bus master, medium devsel, latency 0, IRQ 19
I/O ports at e880 [size=32]

00:1d.2 USB Controller: Intel Corp. 82801DB USB (Hub #3) (rev 02)
(prog-if 00 [UHCI])
Subsystem: Intel Corp.: Unknown device 5356
Flags: bus master, medium devsel, latency 0, IRQ 18
I/O ports at ec00 [size=32]

00:1d.7 USB Controller: Intel Corp. 82801DB USB EHCI Controller (rev
02) (prog-if 20 [EHCI])
Subsystem: Intel Corp.: Unknown device 5356
Flags: bus master, medium devsel, latency 0, IRQ 23
Memory at febffc00 (32-bit, non-prefetchable) [size=1K]
Capabilities: [50] Power Management version 2
Capabilities: [58] #0a [2080]

00:1e.0 PCI bridge: Intel Corp. 82801BA/CA/DB PCI Bridge (rev 82)
(prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=02, subordinate=02, sec-latency=32
I/O behind bridge: 0000d000-0000dfff
Memory behind bridge: fe600000-feafffff
Prefetchable memory behind bridge: dc300000-dc3fffff

00:1f.0 ISA bridge: Intel Corp. 82801DB ISA Bridge (LPC) (rev 02)
Flags: bus master, medium devsel, latency 0

00:1f.1 IDE interface: Intel Corp. 82801DB ICH4 IDE (rev 02) (prog-if
8a [Master SecP PriP])
Subsystem: Intel Corp.: Unknown device 5356
Flags: bus master, medium devsel, latency 0, IRQ 18
I/O ports at <unassigned> [size=8]
I/O ports at <unassigned> [size=4]
I/O ports at <unassigned> [size=8]
I/O ports at <unassigned> [size=4]
I/O ports at ffa0 [size=16]
Memory at 40000000 (32-bit, non-prefetchable) [disabled] [size=1K]

00:1f.3 SMBus: Intel Corp. 82801DB SMBus (rev 02)
Subsystem: Intel Corp.: Unknown device 5356
Flags: medium devsel, IRQ 17
I/O ports at e480 [size=32]

01:00.0 VGA compatible controller: nVidia Corporation NV25 [GeForce4
Ti4600] (rev a2) (prog-if 00 [VGA])
Flags: bus master, 66Mhz, medium devsel, latency 248, IRQ 16
Memory at fd000000 (32-bit, non-prefetchable) [size=16M]
Memory at d0000000 (32-bit, prefetchable) [size=128M]
Memory at dc280000 (32-bit, prefetchable) [size=512K]
Expansion ROM at fe5e0000 [disabled] [size=128K]
Capabilities: [60] Power Management version 2
Capabilities: [44] AGP version 2.0

02:01.0 SCSI storage controller: Adaptec AHA-3960D / AIC-7899A U160/m
(rev 01)
Subsystem: Adaptec AHA-3960D U160/m
Flags: bus master, 66Mhz, medium devsel, latency 32, IRQ 22
BIST result: 00
I/O ports at d400 [disabled] [size=256]
Memory at feafe000 (64-bit, non-prefetchable) [size=4K]
Expansion ROM at feaa0000 [disabled] [size=128K]
Capabilities: [dc] Power Management version 2

02:01.1 SCSI storage controller: Adaptec AHA-3960D / AIC-7899A U160/m
(rev 01)
Subsystem: Adaptec AHA-3960D U160/m
Flags: bus master, 66Mhz, medium devsel, latency 32, IRQ 21
BIST result: 00
I/O ports at d800 [disabled] [size=256]
Memory at feaff000 (64-bit, non-prefetchable) [size=4K]
Expansion ROM at feac0000 [disabled] [size=128K]
Capabilities: [dc] Power Management version 2

02:03.0 Multimedia audio controller: IC Ensemble Inc ICE1712 [Envy24]
(rev 02)
Subsystem: IC Ensemble Inc: Unknown device d634
Flags: bus master, medium devsel, latency 32, IRQ 19
I/O ports at dc00 [size=32]
I/O ports at d080 [size=16]
I/O ports at d000 [size=16]
I/O ports at df00 [size=64]
Capabilities: [80] Power Management version 1

02:05.0 Ethernet controller: Intel Corp. 82557/8/9 [Ethernet Pro 100]
(rev 08)
Subsystem: IBM 10/100 EtherJet Management Adapter
Flags: bus master, medium devsel, latency 32, IRQ 18
Memory at feafd000 (32-bit, non-prefetchable) [size=4K]
I/O ports at de80 [size=64]
Memory at fe900000 (32-bit, non-prefetchable) [size=1M]
Expansion ROM at fe800000 [disabled] [size=1M]
Capabilities: [dc] Power Management version 2

02:08.0 Ethernet controller: Intel Corp. 82801BD PRO/100 VE (LOM)
Ethernet Controller (rev 82)
Subsystem: Intel Corp.: Unknown device 3015
Flags: bus master, medium devsel, latency 32, IRQ 20
Memory at feafc000 (32-bit, non-prefetchable) [size=4K]
I/O ports at de00 [size=64]
Capabilities: [dc] Power Management version 2

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