eb4b79919a
Older version wasn't providing full support for PMR setup, this one does. Rewrite get-pmr such that it supports CMB/PMR sizes greater than 4GB. Also, since CMB and PMR can coexist in newer versions of qemu try to detect both under single device. E.g.: nvme0:0000:00:04.0:64-bit:prefetchable:0x700000000:0x707ffffff:0x08000000:cmb nvme0:0000:00:04.0:64-bit:prefetchable:0x400000000:0x5ffffffff:0x200000000:pmr nvme1:0000:00:05.0:64-bit:prefetchable:0x708000000:0x70fffffff:0x08000000:cmb nvme2:0000:00:06.0:64-bit:prefetchable:0x600000000:0x6ffffffff:0x100000000:cmb Signed-off-by: Michal Berger <michalx.berger@intel.com> Change-Id: Ic159f5c12d3ef39db77617f7d64f825356c255a4 Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/7539 Tested-by: SPDK CI Jenkins <sys_sgci@intel.com> Reviewed-by: Jim Harris <james.r.harris@intel.com> Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
80 lines
1.6 KiB
Bash
Executable File
80 lines
1.6 KiB
Bash
Executable File
#!/usr/bin/env bash
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# We simply check if BAR2 is 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.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 loc
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local base_addr2
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local base_addr4
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local bar local bar2 bar3 bar4 bar5
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local bar_type2
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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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"$bar_type"
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}
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bar2=$(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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# QEMU uses 64-bit BARs
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if ((bar2 & 1 << 2)); then
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bar_type2=pmr
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if [[ -e $nvme/cmb ]]; then
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bar_type2=cmb
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fi
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base_addr2=$(((bar2 & ~0xf) + (bar3 << 32)))
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print_info "$bar2" "$base_addr2" "$bar_type2"
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fi
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# QEMU uses 64-bit BARs
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if ((bar4 & 1 << 2)); then
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base_addr4=$(((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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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"
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done
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