tree: git://people.freedesktop.org/~agd5f/linux.git amd-staging-drm-next head: bc29281af131ae8c02e05322e7fc72829ec555f0 commit: ed238ee1ef30254146a5811270d37ed1cc9826d1 [324/336] drm/amdgpu: add some VM PD/PT iterators v2 reproduce: make htmldocs
All warnings (new ones prefixed by >>):
include/net/mac80211.h:977: warning: Function parameter or member
'control.rts_cts_rate_idx' not described in 'ieee80211_tx_info'
include/net/mac80211.h:977: warning: Function parameter or member
'control.use_rts' not described in 'ieee80211_tx_info'
include/net/mac80211.h:977: warning: Function parameter or member
'control.use_cts_prot' not described in 'ieee80211_tx_info'
include/net/mac80211.h:977: warning: Function parameter or member
'control.short_preamble' not described in 'ieee80211_tx_info'
include/net/mac80211.h:977: warning: Function parameter or member
'control.skip_table' not described in 'ieee80211_tx_info'
include/net/mac80211.h:977: warning: Function parameter or member
'control.jiffies' not described in 'ieee80211_tx_info'
include/net/mac80211.h:977: warning: Function parameter or member
'control.vif' not described in 'ieee80211_tx_info'
include/net/mac80211.h:977: warning: Function parameter or member
'control.hw_key' not described in 'ieee80211_tx_info'
include/net/mac80211.h:977: warning: Function parameter or member
'control.flags' not described in 'ieee80211_tx_info'
include/net/mac80211.h:977: warning: Function parameter or member
'control.enqueue_time' not described in 'ieee80211_tx_info'
include/net/mac80211.h:977: warning: Function parameter or member 'ack' not
described in 'ieee80211_tx_info'
include/net/mac80211.h:977: warning: Function parameter or member
'ack.cookie' not described in 'ieee80211_tx_info'
include/net/mac80211.h:977: warning: Function parameter or member
'status.rates' not described in 'ieee80211_tx_info'
include/net/mac80211.h:977: warning: Function parameter or member
'status.ack_signal' not described in 'ieee80211_tx_info'
include/net/mac80211.h:977: warning: Function parameter or member
'status.ampdu_ack_len' not described in 'ieee80211_tx_info'
include/net/mac80211.h:977: warning: Function parameter or member
'status.ampdu_len' not described in 'ieee80211_tx_info'
include/net/mac80211.h:977: warning: Function parameter or member
'status.antenna' not described in 'ieee80211_tx_info'
include/net/mac80211.h:977: warning: Function parameter or member
'status.tx_time' not described in 'ieee80211_tx_info'
include/net/mac80211.h:977: warning: Function parameter or member
'status.is_valid_ack_signal' not described in 'ieee80211_tx_info'
include/net/mac80211.h:977: warning: Function parameter or member
'status.status_driver_data' not described in 'ieee80211_tx_info'
include/net/mac80211.h:977: warning: Function parameter or member
'driver_rates' not described in 'ieee80211_tx_info'
include/net/mac80211.h:977: warning: Function parameter or member 'pad' not
described in 'ieee80211_tx_info'
include/net/mac80211.h:977: warning: Function parameter or member
'rate_driver_data' not described in 'ieee80211_tx_info'
net/mac80211/sta_info.h:588: warning: Function parameter or member
'rx_stats_avg' not described in 'sta_info'
net/mac80211/sta_info.h:588: warning: Function parameter or member
'rx_stats_avg.signal' not described in 'sta_info'
net/mac80211/sta_info.h:588: warning: Function parameter or member
'rx_stats_avg.chain_signal' not described in 'sta_info'
net/mac80211/sta_info.h:588: warning: Function parameter or member
'status_stats.filtered' not described in 'sta_info'
net/mac80211/sta_info.h:588: warning: Function parameter or member
'status_stats.retry_failed' not described in 'sta_info'
net/mac80211/sta_info.h:588: warning: Function parameter or member
'status_stats.retry_count' not described in 'sta_info'
net/mac80211/sta_info.h:588: warning: Function parameter or member
'status_stats.lost_packets' not described in 'sta_info'
net/mac80211/sta_info.h:588: warning: Function parameter or member
'status_stats.last_tdls_pkt_time' not described in 'sta_info'
net/mac80211/sta_info.h:588: warning: Function parameter or member
'status_stats.msdu_retries' not described in 'sta_info'
net/mac80211/sta_info.h:588: warning: Function parameter or member
'status_stats.msdu_failed' not described in 'sta_info'
net/mac80211/sta_info.h:588: warning: Function parameter or member
'status_stats.last_ack' not described in 'sta_info'
net/mac80211/sta_info.h:588: warning: Function parameter or member
'status_stats.last_ack_signal' not described in 'sta_info'
net/mac80211/sta_info.h:588: warning: Function parameter or member
'status_stats.ack_signal_filled' not described in 'sta_info'
net/mac80211/sta_info.h:588: warning: Function parameter or member
'status_stats.avg_ack_signal' not described in 'sta_info'
net/mac80211/sta_info.h:588: warning: Function parameter or member
'tx_stats.packets' not described in 'sta_info'
net/mac80211/sta_info.h:588: warning: Function parameter or member
'tx_stats.bytes' not described in 'sta_info'
net/mac80211/sta_info.h:588: warning: Function parameter or member
'tx_stats.last_rate' not described in 'sta_info'
net/mac80211/sta_info.h:588: warning: Function parameter or member
'tx_stats.msdu' not described in 'sta_info'
include/linux/mod_devicetable.h:763: warning: Function parameter or member
'driver_data' not described in 'typec_device_id'
kernel/sched/fair.c:3371: warning: Function parameter or member 'flags' not
described in 'attach_entity_load_avg'
arch/x86/include/asm/atomic.h:84: warning: Excess function parameter 'i'
description in 'arch_atomic_sub_and_test'
arch/x86/include/asm/atomic.h:84: warning: Excess function parameter 'v'
description in 'arch_atomic_sub_and_test'
arch/x86/include/asm/atomic.h:96: warning: Excess function parameter 'v'
description in 'arch_atomic_inc'
arch/x86/include/asm/atomic.h:109: warning: Excess function parameter 'v'
description in 'arch_atomic_dec'
arch/x86/include/asm/atomic.h:124: warning: Excess function parameter 'v'
description in 'arch_atomic_dec_and_test'
arch/x86/include/asm/atomic.h:138: warning: Excess function parameter 'v'
description in 'arch_atomic_inc_and_test'
arch/x86/include/asm/atomic.h:153: warning: Excess function parameter 'i'
description in 'arch_atomic_add_negative'
arch/x86/include/asm/atomic.h:153: warning: Excess function parameter 'v'
description in 'arch_atomic_add_negative'
include/linux/dma-buf.h:304: warning: Function parameter or member
'cb_excl.cb' not described in 'dma_buf'
include/linux/dma-buf.h:304: warning: Function parameter or member
'cb_excl.poll' not described in 'dma_buf'
include/linux/dma-buf.h:304: warning: Function parameter or member
'cb_excl.active' not described in 'dma_buf'
include/linux/dma-buf.h:304: warning: Function parameter or member
'cb_shared.cb' not described in 'dma_buf'
include/linux/dma-buf.h:304: warning: Function parameter or member
'cb_shared.poll' not described in 'dma_buf'
include/linux/dma-buf.h:304: warning: Function parameter or member
'cb_shared.active' not described in 'dma_buf'
include/linux/dma-fence-array.h:54: warning: Function parameter or member
'work' not described in 'dma_fence_array'
include/linux/gpio/driver.h:142: warning: Function parameter or member
'request_key' not described in 'gpio_irq_chip'
include/linux/iio/hw-consumer.h:1: warning: no structured comments found
include/linux/input/sparse-keymap.h:46: warning: Function parameter or
member 'sw' not described in 'key_entry'
drivers/pci/pci.c:218: warning: Excess function parameter 'p' description in
'pci_dev_str_match_path'
include/linux/regulator/driver.h:227: warning: Function parameter or member
'resume' not described in 'regulator_ops'
drivers/regulator/core.c:4479: warning: Excess function parameter 'state'
description in 'regulator_suspend'
arch/s390/include/asm/cio.h:245: warning: Function parameter or member
'esw.esw0' not described in 'irb'
arch/s390/include/asm/cio.h:245: warning: Function parameter or member
'esw.esw1' not described in 'irb'
arch/s390/include/asm/cio.h:245: warning: Function parameter or member
'esw.esw2' not described in 'irb'
arch/s390/include/asm/cio.h:245: warning: Function parameter or member
'esw.esw3' not described in 'irb'
arch/s390/include/asm/cio.h:245: warning: Function parameter or member
'esw.eadm' not described in 'irb'
drivers/slimbus/stream.c:1: warning: no structured comments found
drivers/target/target_core_device.c:1: warning: no structured comments found
drivers/usb/dwc3/gadget.c:510: warning: Excess function parameter 'dwc'
description in 'dwc3_gadget_start_config'
drivers/usb/typec/class.c:1497: warning: Excess function parameter 'drvdata'
description in 'typec_port_register_altmode'
drivers/usb/typec/class.c:1497: warning: Excess function parameter 'drvdata'
description in 'typec_port_register_altmode'
drivers/usb/typec/class.c:1497: warning: Excess function parameter 'drvdata'
description in 'typec_port_register_altmode'
drivers/usb/typec/class.c:1497: warning: Excess function parameter 'drvdata'
description in 'typec_port_register_altmode'
drivers/usb/typec/class.c:1497: warning: Excess function parameter 'drvdata'
description in 'typec_port_register_altmode'
drivers/usb/typec/class.c:1497: warning: Excess function parameter 'drvdata'
description in 'typec_port_register_altmode'
drivers/usb/typec/class.c:1497: warning: Excess function parameter 'drvdata'
description in 'typec_port_register_altmode'
drivers/usb/typec/class.c:1497: warning: Excess function parameter 'drvdata'
description in 'typec_port_register_altmode'
drivers/usb/typec/class.c:1497: warning: Excess function parameter 'drvdata'
description in 'typec_port_register_altmode'
drivers/usb/typec/class.c:1497: warning: Excess function parameter 'drvdata'
description in 'typec_port_register_altmode'
drivers/usb/typec/class.c:1497: warning: Excess function parameter 'drvdata'
description in 'typec_port_register_altmode'
drivers/usb/typec/class.c:1497: warning: Excess function parameter 'drvdata'
description in 'typec_port_register_altmode'
drivers/usb/typec/bus.c:1: warning: no structured comments found
drivers/usb/typec/bus.c:268: warning: Function parameter or member 'mode'
not described in 'typec_match_altmode'
drivers/usb/typec/class.c:1497: warning: Excess function parameter 'drvdata'
description in 'typec_port_register_altmode'
drivers/usb/typec/class.c:1: warning: no structured comments found
include/linux/w1.h:281: warning: Function parameter or member
'of_match_table' not described in 'w1_family'
fs/direct-io.c:257: warning: Excess function parameter 'offset' description
in 'dio_complete'
fs/file_table.c:1: warning: no structured comments found
fs/libfs.c:477: warning: Excess function parameter 'available' description
in 'simple_write_end'
fs/posix_acl.c:646: warning: Function parameter or member 'inode' not
described in 'posix_acl_update_mode'
fs/posix_acl.c:646: warning: Function parameter or member 'mode_p' not
described in 'posix_acl_update_mode'
fs/posix_acl.c:646: warning: Function parameter or member 'acl' not
described in 'posix_acl_update_mode'
drivers/gpu/drm/amd/amdgpu/amdgpu_mn.c:183: warning: Function parameter or
member 'blockable' not described in 'amdgpu_mn_read_lock'
drivers/gpu/drm/amd/amdgpu/amdgpu_mn.c:254: warning: Function parameter or
member 'blockable' not described in 'amdgpu_mn_invalidate_range_start_gfx'
drivers/gpu/drm/amd/amdgpu/amdgpu_mn.c:302: warning: Function parameter or
member 'blockable' not described in 'amdgpu_mn_invalidate_range_start_hsa'
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:361: warning: cannot understand
function prototype: 'struct amdgpu_vm_pt_cursor '
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:362: warning: cannot understand
function prototype: 'struct amdgpu_vm_pt_cursor '
>> drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:533: warning: Function parameter or
>> member 'adev' not described in 'for_each_amdgpu_vm_pt_leaf'
>> drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:533: warning: Function parameter or
>> member 'vm' not described in 'for_each_amdgpu_vm_pt_leaf'
>> drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:533: warning: Function parameter or
>> member 'start' not described in 'for_each_amdgpu_vm_pt_leaf'
>> drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:533: warning: Function parameter or
>> member 'end' not described in 'for_each_amdgpu_vm_pt_leaf'
>> drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:533: warning: Function parameter or
>> member 'cursor' not described in 'for_each_amdgpu_vm_pt_leaf'
>> drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:581: warning: Function parameter or
>> member 'adev' not described in 'for_each_amdgpu_vm_pt_dfs_safe'
>> drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:581: warning: Function parameter or
>> member 'vm' not described in 'for_each_amdgpu_vm_pt_dfs_safe'
>> drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:581: warning: Function parameter or
>> member 'cursor' not described in 'for_each_amdgpu_vm_pt_dfs_safe'
>> drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:581: warning: Function parameter or
>> member 'entry' not described in 'for_each_amdgpu_vm_pt_dfs_safe'
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:827: warning: Function parameter or
member 'level' not described in 'amdgpu_vm_bo_param'
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:1352: warning: Function parameter or
member 'params' not described in 'amdgpu_vm_update_func'
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:1352: warning: Function parameter or
member 'bo' not described in 'amdgpu_vm_update_func'
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:1352: warning: Function parameter or
member 'pe' not described in 'amdgpu_vm_update_func'
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:1352: warning: Function parameter or
member 'addr' not described in 'amdgpu_vm_update_func'
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:1352: warning: Function parameter or
member 'count' not described in 'amdgpu_vm_update_func'
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:1352: warning: Function parameter or
member 'incr' not described in 'amdgpu_vm_update_func'
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:1352: warning: Function parameter or
member 'flags' not described in 'amdgpu_vm_update_func'
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:3095: warning: Function parameter or
member 'pasid' not described in 'amdgpu_vm_make_compute'
include/drm/drm_drv.h:610: warning: Function parameter or member
'gem_prime_pin' not described in 'drm_driver'
include/drm/drm_drv.h:610: warning: Function parameter or member
'gem_prime_unpin' not described in 'drm_driver'
include/drm/drm_drv.h:610: warning: Function parameter or member
'gem_prime_res_obj' not described in 'drm_driver'
include/drm/drm_drv.h:610: warning: Function parameter or member
'gem_prime_get_sg_table' not described in 'drm_driver'
include/drm/drm_drv.h:610: warning: Function parameter or member
'gem_prime_import_sg_table' not described in 'drm_driver'
include/drm/drm_drv.h:610: warning: Function parameter or member
'gem_prime_vmap' not described in 'drm_driver'
include/drm/drm_drv.h:610: warning: Function parameter or member
'gem_prime_vunmap' not described in 'drm_driver'
include/drm/drm_drv.h:610: warning: Function parameter or member
'gem_prime_mmap' not described in 'drm_driver'
include/drm/drm_panel.h:98: warning: Function parameter or member 'link' not
described in 'drm_panel'
drivers/gpu/drm/i915/i915_vma.h:49: warning: cannot understand function
prototype: 'struct i915_vma '
drivers/gpu/drm/i915/i915_vma.h:1: warning: no structured comments found
drivers/gpu/drm/i915/intel_guc_fwif.h:553: warning: cannot understand
function prototype: 'struct guc_log_buffer_state '
drivers/gpu/drm/i915/i915_trace.h:1: warning: no structured comments found
include/linux/skbuff.h:860: warning: Function parameter or member
'dev_scratch' not described in 'sk_buff'
include/linux/skbuff.h:860: warning: Function parameter or member 'list' not
described in 'sk_buff'
include/linux/skbuff.h:860: warning: Function parameter or member
'ip_defrag_offset' not described in 'sk_buff'
include/linux/skbuff.h:860: warning: Function parameter or member
'skb_mstamp' not described in 'sk_buff'
include/linux/skbuff.h:860: warning: Function parameter or member
'__cloned_offset' not described in 'sk_buff'
include/linux/skbuff.h:860: warning: Function parameter or member
'head_frag' not described in 'sk_buff'
include/linux/skbuff.h:860: warning: Function parameter or member
'__pkt_type_offset' not described in 'sk_buff'
include/linux/skbuff.h:860: warning: Function parameter or member
'encapsulation' not described in 'sk_buff'
include/linux/skbuff.h:860: warning: Function parameter or member
'encap_hdr_csum' not described in 'sk_buff'
include/linux/skbuff.h:860: warning: Function parameter or member
'csum_valid' not described in 'sk_buff'
include/linux/skbuff.h:860: warning: Function parameter or member
'csum_complete_sw' not described in 'sk_buff'
include/linux/skbuff.h:860: warning: Function parameter or member
'csum_level' not described in 'sk_buff'
include/linux/skbuff.h:860: warning: Function parameter or member
'inner_protocol_type' not described in 'sk_buff'
include/linux/skbuff.h:860: warning: Function parameter or member
'remcsum_offload' not described in 'sk_buff'
include/linux/skbuff.h:860: warning: Function parameter or member
'offload_fwd_mark' not described in 'sk_buff'
include/linux/skbuff.h:860: warning: Function parameter or member
'offload_mr_fwd_mark' not described in 'sk_buff'
include/linux/skbuff.h:860: warning: Function parameter or member
'sender_cpu' not described in 'sk_buff'
include/linux/skbuff.h:860: warning: Function parameter or member
'reserved_tailroom' not described in 'sk_buff'
include/linux/skbuff.h:860: warning: Function parameter or member
'inner_ipproto' not described in 'sk_buff'
include/net/sock.h:238: warning: Function parameter or member 'skc_addrpair'
not described in 'sock_common'
include/net/sock.h:238: warning: Function parameter or member 'skc_portpair'
not described in 'sock_common'
include/net/sock.h:238: warning: Function parameter or member 'skc_ipv6only'
not described in 'sock_common'
include/net/sock.h:238: warning: Function parameter or member
'skc_net_refcnt' not described in 'sock_common'
include/net/sock.h:238: warning: Function parameter or member 'skc_v6_daddr'
not described in 'sock_common'
include/net/sock.h:238: warning: Function parameter or member
'skc_v6_rcv_saddr' not described in 'sock_common'
include/net/sock.h:238: warning: Function parameter or member 'skc_cookie'
not described in 'sock_common'
include/net/sock.h:238: warning: Function parameter or member 'skc_listener'
not described in 'sock_common'
include/net/sock.h:238: warning: Function parameter or member 'skc_tw_dr'
not described in 'sock_common'
include/net/sock.h:238: warning: Function parameter or member 'skc_rcv_wnd'
not described in 'sock_common'
include/net/sock.h:238: warning: Function parameter or member
'skc_tw_rcv_nxt' not described in 'sock_common'
include/net/sock.h:509: warning: Function parameter or member
'sk_backlog.rmem_alloc' not described in 'sock'
include/net/sock.h:509: warning: Function parameter or member
'sk_backlog.len' not described in 'sock'
include/net/sock.h:509: warning: Function parameter or member
'sk_backlog.head' not described in 'sock'
include/net/sock.h:509: warning: Function parameter or member
'sk_backlog.tail' not described in 'sock'
include/net/sock.h:509: warning: Function parameter or member 'sk_wq_raw'
not described in 'sock'
include/net/sock.h:509: warning: Function parameter or member
'tcp_rtx_queue' not described in 'sock'
include/net/sock.h:509: warning: Function parameter or member
'sk_route_forced_caps' not described in 'sock'
include/net/sock.h:509: warning: Function parameter or member
'sk_txtime_report_errors' not described in 'sock'
include/net/sock.h:509: warning: Function parameter or member
'sk_validate_xmit_skb' not described in 'sock'
include/linux/netdevice.h:2018: warning: Function parameter or member
'adj_list.upper' not described in 'net_device'
include/linux/netdevice.h:2018: warning: Function parameter or member
'adj_list.lower' not described in 'net_device'
include/linux/netdevice.h:2018: warning: Function parameter or member
'gso_partial_features' not described in 'net_device'
include/linux/netdevice.h:2018: warning: Function parameter or member
'switchdev_ops' not described in 'net_device'
include/linux/netdevice.h:2018: warning: Function parameter or member
'l3mdev_ops' not described in 'net_device'
include/linux/netdevice.h:2018: warning: Function parameter or member
'xfrmdev_ops' not described in 'net_device'
include/linux/netdevice.h:2018: warning: Function parameter or member
'tlsdev_ops' not described in 'net_device'
include/linux/netdevice.h:2018: warning: Function parameter or member
'name_assign_type' not described in 'net_device'
include/linux/netdevice.h:2018: warning: Function parameter or member
'ieee802154_ptr' not described in 'net_device'
include/linux/netdevice.h:2018: warning: Function parameter or member
'mpls_ptr' not described in 'net_device'
include/linux/netdevice.h:2018: warning: Function parameter or member
'xdp_prog' not described in 'net_device'
include/linux/netdevice.h:2018: warning: Function parameter or member
'gro_flush_timeout' not described in 'net_device'
include/linux/netdevice.h:2018: warning: Function parameter or member
'nf_hooks_ingress' not described in 'net_device'
include/linux/netdevice.h:2018: warning: Function parameter or member
'____cacheline_aligned_in_smp' not described in 'net_device'
include/linux/netdevice.h:2018: warning: Function parameter or member
'qdisc_hash' not described in 'net_device'
include/linux/netdevice.h:2018: warning: Function parameter or member
'xps_cpus_map' not described in 'net_device'
include/linux/netdevice.h:2018: warning: Function parameter or member
'xps_rxqs_map' not described in 'net_device'
include/linux/phylink.h:56: warning: Function parameter or member
'__ETHTOOL_DECLARE_LINK_MODE_MASK(advertising' not described in
'phylink_link_state'
include/linux/phylink.h:56: warning: Function parameter or member
'__ETHTOOL_DECLARE_LINK_MODE_MASK(lp_advertising' not described in
'phylink_link_state'
sound/soc/soc-core.c:2918: warning: Excess function parameter
'legacy_dai_naming' description in 'snd_soc_register_dais'
Documentation/admin-guide/cgroup-v2.rst:1485: WARNING: Block quote ends
without a blank line; unexpected unindent.
Documentation/admin-guide/cgroup-v2.rst:1487: WARNING: Block quote ends
without a blank line; unexpected unindent.
Documentation/admin-guide/cgroup-v2.rst:1488: WARNING: Block quote ends
without a blank line; unexpected unindent.
Documentation/core-api/boot-time-mm.rst:78: ERROR: Error in "kernel-doc"
directive:
unknown option: "nodocs".
vim +533 drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
357
358 /**
359 * amdgpu_vm_pt_cursor - state for for_each_amdgpu_vm_pt
360 */
> 361 struct amdgpu_vm_pt_cursor {
> 362 uint64_t pfn;
363 struct amdgpu_vm_pt *parent;
364 struct amdgpu_vm_pt *entry;
365 unsigned level;
366 };
367
368 /**
369 * amdgpu_vm_pt_start - start PD/PT walk
370 *
371 * @adev: amdgpu_device pointer
372 * @vm: amdgpu_vm structure
373 * @start: start address of the walk
374 * @cursor: state to initialize
375 *
376 * Initialize a amdgpu_vm_pt_cursor to start a walk.
377 */
378 static void amdgpu_vm_pt_start(struct amdgpu_device *adev,
379 struct amdgpu_vm *vm, uint64_t start,
380 struct amdgpu_vm_pt_cursor *cursor)
381 {
382 cursor->pfn = start;
383 cursor->parent = NULL;
384 cursor->entry = &vm->root;
385 cursor->level = adev->vm_manager.root_level;
386 }
387
388 /**
389 * amdgpu_vm_pt_descendant - go to child node
390 *
391 * @adev: amdgpu_device pointer
392 * @cursor: current state
393 *
394 * Walk to the child node of the current node.
395 * Returns:
396 * True if the walk was possible, false otherwise.
397 */
398 static bool amdgpu_vm_pt_descendant(struct amdgpu_device *adev,
399 struct amdgpu_vm_pt_cursor *cursor)
400 {
401 unsigned num_entries, shift, idx;
402
403 if (!cursor->entry->entries)
404 return false;
405
406 BUG_ON(!cursor->entry->base.bo);
407 num_entries = amdgpu_vm_num_entries(adev, cursor->level);
408 shift = amdgpu_vm_level_shift(adev, cursor->level);
409
410 ++cursor->level;
411 idx = (cursor->pfn >> shift) % num_entries;
412 cursor->parent = cursor->entry;
413 cursor->entry = &cursor->entry->entries[idx];
414 return true;
415 }
416
417 /**
418 * amdgpu_vm_pt_sibling - go to sibling node
419 *
420 * @adev: amdgpu_device pointer
421 * @cursor: current state
422 *
423 * Walk to the sibling node of the current node.
424 * Returns:
425 * True if the walk was possible, false otherwise.
426 */
427 static bool amdgpu_vm_pt_sibling(struct amdgpu_device *adev,
428 struct amdgpu_vm_pt_cursor *cursor)
429 {
430 unsigned shift, num_entries;
431
432 /* Root doesn't have a sibling */
433 if (!cursor->parent)
434 return false;
435
436 /* Go to our parents and see if we got a sibling */
437 shift = amdgpu_vm_level_shift(adev, cursor->level - 1);
438 num_entries = amdgpu_vm_num_entries(adev, cursor->level - 1);
439
440 if (cursor->entry == &cursor->parent->entries[num_entries - 1])
441 return false;
442
443 cursor->pfn += 1ULL << shift;
444 cursor->pfn &= ~((1ULL << shift) - 1);
445 ++cursor->entry;
446 return true;
447 }
448
449 /**
450 * amdgpu_vm_pt_ancestor - go to parent node
451 *
452 * @cursor: current state
453 *
454 * Walk to the parent node of the current node.
455 * Returns:
456 * True if the walk was possible, false otherwise.
457 */
458 static bool amdgpu_vm_pt_ancestor(struct amdgpu_vm_pt_cursor *cursor)
459 {
460 if (!cursor->parent)
461 return false;
462
463 --cursor->level;
464 cursor->entry = cursor->parent;
465 cursor->parent = amdgpu_vm_pt_parent(cursor->parent);
466 return true;
467 }
468
469 /**
470 * amdgpu_vm_pt_next - get next PD/PT in hieratchy
471 *
472 * @adev: amdgpu_device pointer
473 * @cursor: current state
474 *
475 * Walk the PD/PT tree to the next node.
476 */
477 static void amdgpu_vm_pt_next(struct amdgpu_device *adev,
478 struct amdgpu_vm_pt_cursor *cursor)
479 {
480 /* First try a newborn child */
481 if (amdgpu_vm_pt_descendant(adev, cursor))
482 return;
483
484 /* If that didn't worked try to find a sibling */
485 while (!amdgpu_vm_pt_sibling(adev, cursor)) {
486 /* No sibling, go to our parents and grandparents */
487 if (!amdgpu_vm_pt_ancestor(cursor)) {
488 cursor->pfn = ~0ll;
489 return;
490 }
491 }
492 }
493
494 /**
495 * amdgpu_vm_pt_first_leaf - get first leaf PD/PT
496 *
497 * @adev: amdgpu_device pointer
498 * @vm: amdgpu_vm structure
499 * @start: start addr of the walk
500 * @cursor: state to initialize
501 *
502 * Start a walk and go directly to the leaf node.
503 */
504 static void amdgpu_vm_pt_first_leaf(struct amdgpu_device *adev,
505 struct amdgpu_vm *vm, uint64_t
start,
506 struct amdgpu_vm_pt_cursor *cursor)
507 {
508 amdgpu_vm_pt_start(adev, vm, start, cursor);
509 while (amdgpu_vm_pt_descendant(adev, cursor));
510 }
511
512 /**
513 * amdgpu_vm_pt_next_leaf - get next leaf PD/PT
514 *
515 * @adev: amdgpu_device pointer
516 * @cursor: current state
517 *
518 * Walk the PD/PT tree to the next leaf node.
519 */
520 static void amdgpu_vm_pt_next_leaf(struct amdgpu_device *adev,
521 struct amdgpu_vm_pt_cursor *cursor)
522 {
523 amdgpu_vm_pt_next(adev, cursor);
524 while (amdgpu_vm_pt_descendant(adev, cursor));
525 }
526
527 /**
528 * for_each_amdgpu_vm_pt_leaf - walk over all leaf PDs/PTs in the
hierarchy
529 */
530 #define for_each_amdgpu_vm_pt_leaf(adev, vm, start, end, cursor)
\
531 for (amdgpu_vm_pt_first_leaf((adev), (vm), (start), &(cursor));
\
532 (cursor).pfn <= end; amdgpu_vm_pt_next_leaf((adev),
&(cursor)))
> 533
534 /**
535 * amdgpu_vm_pt_first_dfs - start a deep first search
536 *
537 * @adev: amdgpu_device structure
538 * @vm: amdgpu_vm structure
539 * @cursor: state to initialize
540 *
541 * Starts a deep first traversal of the PD/PT tree.
542 */
543 static void amdgpu_vm_pt_first_dfs(struct amdgpu_device *adev,
544 struct amdgpu_vm *vm,
545 struct amdgpu_vm_pt_cursor *cursor)
546 {
547 amdgpu_vm_pt_start(adev, vm, 0, cursor);
548 while (amdgpu_vm_pt_descendant(adev, cursor));
549 }
550
551 /**
552 * amdgpu_vm_pt_next_dfs - get the next node for a deep first search
553 *
554 * @adev: amdgpu_device structure
555 * @cursor: current state
556 *
557 * Move the cursor to the next node in a deep first search.
558 */
559 static void amdgpu_vm_pt_next_dfs(struct amdgpu_device *adev,
560 struct amdgpu_vm_pt_cursor *cursor)
561 {
562 if (!cursor->entry)
563 return;
564
565 if (!cursor->parent)
566 cursor->entry = NULL;
567 else if (amdgpu_vm_pt_sibling(adev, cursor))
568 while (amdgpu_vm_pt_descendant(adev, cursor));
569 else
570 amdgpu_vm_pt_ancestor(cursor);
571 }
572
573 /**
574 * for_each_amdgpu_vm_pt_dfs_safe - safe deep first search of all
PDs/PTs
575 */
576 #define for_each_amdgpu_vm_pt_dfs_safe(adev, vm, cursor, entry)
\
577 for (amdgpu_vm_pt_first_dfs((adev), (vm), &(cursor)),
\
578 (entry) = (cursor).entry, amdgpu_vm_pt_next_dfs((adev),
&(cursor));\
579 (entry); (entry) = (cursor).entry,
\
580 amdgpu_vm_pt_next_dfs((adev), &(cursor)))
> 581
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