michaelh/zephyr
1
0
Fork 0
Code Releases Activity

boards/intel_adsp_cavs15: add generic ADSP detection to adsplog.py

Browse source 
As there are a lot of PCI IDs for various devices, identifying
the ADSP this way will be hard to maintain.

Implement a more generic device look-up using the PCI vendor and class
information to detect a compatible ADSP.

Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
This commit is contained in:
Kai Vehmanen 2021-05-14 17:16:09 +03:00 • committed by Kumar Gala
commit ed2d104bab
1 changed files with 17 additions and 20 deletions
Download patch file Download diff file Expand all files Collapse all files

37
boards/xtensa/intel_adsp_cavs15/tools/adsplog.py
View file

@ -6,7 +6,6 @@
import os
import sys
import time
import subprocess
import mmap
# Log reader for the trace output buffer on a ADSP device.
@ -40,31 +39,29 @@ WIN_IDX = 3
WIN_SIZE = 0x20000
LOG_OFFSET = WIN_OFFSET + WIN_IDX * WIN_SIZE
# List of known ADSP devices by their PCI IDs
DEVICES = ["8086:5a98"]
mem = None
sys_devices = "/sys/bus/pci/devices"
for dev in DEVICES:
# Find me a way to do this detection as cleanly in python as shell, I
# dare you.
barfile = subprocess.Popen(["sh", "-c",
"echo -n "
"$(dirname "
f" $(fgrep PCI_ID={dev.upper()} "
" /sys/bus/pci/devices/*/uevent))"
"/resource4"],
stdout=subprocess.PIPE).stdout.read()
if not os.path.exists(barfile):
for dev_addr in os.listdir(sys_devices):
class_file = sys_devices + "/" + dev_addr + "/class"
pciclass = open(class_file).read()
vendor_file = sys_devices + "/" + dev_addr + "/vendor"
pcivendor = open(vendor_file).read()
if not "0x8086" in pcivendor:
continue
if not os.access(barfile, os.R_OK):
sys.stderr.write(f"ERROR: Cannot open {barfile} for reading.\n")
sys.exit(1)
# Intel Multimedia audio controller
# 0x040100 -> DSP is present
# 0x040380 -> DSP is present but optional
if "0x040100" in pciclass or "0x040380" in pciclass:
barfile = sys_devices + "/" + dev_addr + "/resource4"
fd = open(barfile)
mem = mmap.mmap(fd.fileno(), MAP_SIZE, offset=LOG_OFFSET,
fd = open(barfile)
mem = mmap.mmap(fd.fileno(), MAP_SIZE, offset=LOG_OFFSET,
prot=mmap.PROT_READ)
break
if mem is None:
sys.stderr.write("ERROR: No ADSP device found.\n")