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acrn-config: find unused vbar base from start to end

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- find unused vbar base from start of the memory address

Tracked-On: #5426
Signed-off-by: Yang,Yu-chu <yu-chu,yang>
This commit is contained in:
Yang,Yu-chu 2020-10-28 17:47:58 -07:00 committed by wenlingz
parent 6fa5e10e93
commit 7f80314406
1 changed files with 29 additions and 13 deletions
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42
misc/acrn-config/board_config/vbar_base_h.py
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@ -16,6 +16,13 @@ VBAR_INFO_DEFINE="""#ifndef VBAR_BASE_H_
VBAR_INFO_ENDIF="""#endif /* VBAR_BASE_H_ */"""
# Constants for ivshmem
BAR0_SHEMEM_SIZE = 4*common.SIZE_K
BAR1_SHEMEM_SIZE = 4*common.SIZE_K
BAR0_SHEMEM_ALIGNMENT = 4*common.SIZE_K
BAR1_SHEMEM_ALIGNMENT = 4*common.SIZE_K
BAR2_SHEMEM_ALIGNMENT = 0x200000
class MmioWindow(namedtuple(
"MmioWindow", [
"start",
@ -181,10 +188,10 @@ def merged_windows(windowslist):
def get_free_mmio(windowslist, used, size):
for w in windowslist:
window = MmioWindow(start=w.end-size+1, end=w.end)
for u in used[::-1]:
window = MmioWindow(start=w.start, end=w.start+size-1)
for u in used:
if window.overlaps(u):
window = MmioWindow(start=u.start-size, end=u.start-1)
window = MmioWindow(start=u.end+1, end=u.end+size)
continue
if window.overlaps(w):
return window
@ -282,7 +289,10 @@ def generate_file(config):
mmiolist_per_vm[vm_id].sort()
# vbar[1] for share memory is fix to 4K
free_bar = get_free_mmio([MmioWindow(start=common.SIZE_2G, end=common.SIZE_4G-1)], \
mmiolist_per_vm[vm_id], 4 * common.SIZE_K)
mmiolist_per_vm[vm_id], BAR1_SHEMEM_ALIGNMENT + BAR1_SHEMEM_SIZE)
free_bar_start_addr = common.round_up(free_bar.start, BAR1_SHEMEM_ALIGNMENT)
free_bar_end_addr = free_bar_start_addr + BAR1_SHEMEM_SIZE - 1
free_bar = MmioWindow(free_bar_start_addr, free_bar_end_addr)
mmiolist_per_vm[vm_id].append(free_bar)
mmiolist_per_vm[vm_id].sort()
print("{}.vbar_base[1] = {:#x}UL, \\".format(' ' * 54, free_bar.start), file=config)
@ -324,21 +334,27 @@ def generate_file(config):
int_size = int(size) * 0x100000
except:
int_size = 0
# vbar[2] for shared memory is specified size in MB
free_bar2 = get_free_mmio(matching_mmios, mmiolist_per_vm[vm_id], int_size + 0x200000)
free_bar2_start_addr = common.round_up(free_bar2.start, 0x200000) + 0xC
free_bar2_end_addr = free_bar2_start_addr + int_size - 1
free_bar2 = MmioWindow(free_bar2_start_addr, free_bar2_end_addr)
mmiolist_per_vm[vm_id].append(free_bar2)
mmiolist_per_vm[vm_id].sort()
# vbar[0] for shared memory is 0x100
free_bar0 = get_free_mmio(matching_mmios, mmiolist_per_vm[vm_id], 0x100)
free_bar0 = get_free_mmio(matching_mmios, mmiolist_per_vm[vm_id], BAR0_SHEMEM_ALIGNMENT + BAR0_SHEMEM_SIZE)
free_bar0_start_addr = common.round_up(free_bar0.start, BAR0_SHEMEM_ALIGNMENT)
free_bar0_end_addr = free_bar0_start_addr + BAR0_SHEMEM_SIZE - 1
free_bar0 = MmioWindow(free_bar0_start_addr, free_bar0_end_addr)
mmiolist_per_vm[vm_id].append(free_bar0)
mmiolist_per_vm[vm_id].sort()
# vbar[1] for shared memory is 4K
free_bar1 = get_free_mmio(matching_mmios, mmiolist_per_vm[vm_id], 4*common.SIZE_K)
free_bar1 = get_free_mmio(matching_mmios, mmiolist_per_vm[vm_id], BAR1_SHEMEM_ALIGNMENT + BAR1_SHEMEM_SIZE)
free_bar1_start_addr = common.round_up(free_bar1.start, BAR1_SHEMEM_ALIGNMENT)
free_bar1_end_addr = free_bar1_start_addr + BAR1_SHEMEM_SIZE - 1
free_bar1 = MmioWindow(free_bar1_start_addr, free_bar1_end_addr)
mmiolist_per_vm[vm_id].append(free_bar1)
mmiolist_per_vm[vm_id].sort()
# vbar[2] for shared memory is specified size in MB
free_bar2 = get_free_mmio(matching_mmios, mmiolist_per_vm[vm_id], BAR2_SHEMEM_ALIGNMENT + int_size)
free_bar2_start_addr = common.round_up(free_bar2.start, BAR2_SHEMEM_ALIGNMENT) + 0xC
free_bar2_end_addr = free_bar2_start_addr + int_size - 1
free_bar2 = MmioWindow(free_bar2_start_addr, free_bar2_end_addr)
mmiolist_per_vm[vm_id].append(free_bar2)
mmiolist_per_vm[vm_id].sort()
print("#define SOS_IVSHMEM_DEVICE_%-19s" % (str(idx) + "_VBAR"),
" .vbar_base[0] = {:#x}UL, \\".format(free_bar0.start), file=config)
print("{}.vbar_base[1] = {:#x}UL, \\".format(' ' * 54, free_bar1.start), file=config)