843606d7c6
Under latest QEMU, BAR2 is exclusively dedicated to CMB, so reflect that. Also, add paranoid check for the header type to make sure we use proper offsets along the way. Signed-off-by: Michal Berger <michal.berger@intel.com> Change-Id: I75ecfa5bf03861aedfc7bd064cbad60522b8bf0e Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/16774 Reviewed-by: Konrad Sztyber <konrad.sztyber@intel.com> Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com> Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
94 lines
2.0 KiB
Bash
Executable File
94 lines
2.0 KiB
Bash
Executable File
#!/usr/bin/env bash
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# SPDX-License-Identifier: BSD-3-Clause
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# Copyright (C) 2021 Intel Corporation
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# All rights reserved.
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# We simply check if BAR2, BAR4 are present as that's where PMR or CMB is
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# meant to be located under qemu. If found, print some stats then exit.
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shopt -s nullglob
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[[ $(uname -s) == Linux ]] || exit 0
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# Use MSR instead?
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[[ $(< /sys/class/dmi/id/chassis_vendor) == QEMU ]] || exit 0
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get_bar() {
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echo "0x$(setpci -s "$1" "$2.${3:-L}")"
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}
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get_size() {
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local addr=$1
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local start end type
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while IFS="- " read -r start end type; do
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start=0x$start end=0x$end
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if ((start == addr)) && [[ $type == *"$pci"* ]]; then
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printf '0x%08x:0x%08x:0x%08x\n' \
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"$start" "$end" $((end - start + 1))
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return 0
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fi
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done < /proc/iomem
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echo "unknown/unassigned"
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}
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info() {
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local dev=$1
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local pref
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local head
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local base_addr2
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local base_addr4
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local bar2 bar3 bar4 bar5
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pref[0]=non-prefetchable
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pref[1]=prefetchable
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print_info() {
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local bar=$1 base_addr=$2 bar_type=$3
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printf '%s:%s:%s:%s:%s:%s\n' \
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"${nvme##*/}" \
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"$dev" \
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"64-bit" \
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"${pref[bar & 1 << 3 ? 1 : 0]}" \
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"$(get_size "$base_addr")" \
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"$bar_type"
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}
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head=$(get_bar "$dev" 0x0e B)
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bar2=$(get_bar "$dev" 0x18)
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bar3=$(get_bar "$dev" 0x1c)
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bar4=$(get_bar "$dev" 0x20)
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bar5=$(get_bar "$dev" 0x24)
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if ((head != 0)); then
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echo "Wrong haeder type under $dev" >&2
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return 1
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fi
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# QEMU uses 64-bit BARs. If there is no CMB or PMR present, report
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# that to the user and signal failure.
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if ((!(bar2 & 1 << 2) && !(bar4 & 1 << 2))); then
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echo "No CMB|PMR present under $dev" >&2
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return 1
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fi
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if ((bar2 & 1 << 2)); then
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base_addr2=$(((bar2 & ~0xf) + (bar3 << 32)))
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print_info "$bar2" "$base_addr2" cmb
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fi
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if ((bar4 & 1 << 2)); then
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base_addr4=$(((bar4 & ~0xf) + (bar5 << 32)))
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print_info "$bar4" "$base_addr4" pmr
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fi
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}
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missing_buf=0
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for nvme in /sys/class/nvme/nvme*; do
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pci=$(readlink -f "$nvme/device") pci=${pci##*/}
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info "$pci" || ((++missing_buf))
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done
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((missing_buf == 0))
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