����JFIFXX�����    $.' ",#(7),01444'9=82<.342  2!!22222222222222222222222222222222222222222222222222����"��4�� ���,�PG"Z_�4�˷����kjز�Z�,F+��_z�,�© �����zh6�٨�ic�fu���#ډb���_�N�?��wQ���5-�~�I���8����TK<5o�Iv-�����k�_U_�����~b�M��d����Ӝ�U�Hh��?]��E�w��Q���k�{��_}qFW7HTՑ��Y��F�?_�'ϔ��_�Ջt��=||I ��6�έ"�����D���/[�k�9���Y�8ds|\���Ҿp6�Ҵ���]��.����6�z<�v��@]�i%��$j��~�g��J>��no����pM[me�i$[����s�o�ᘨ�˸ nɜG-�ĨU�ycP�3.DB�li�;��hj���x7Z^�N�h������N3u{�:j�x�힞��#M&��jL P@_���� P��&��o8������9�����@Sz6�t7#O�ߋ �s}Yf�T���lmr����Z)'N��k�۞p����w\�Tȯ?�8`�O��i{wﭹW�[�r�� ��Q4F�׊���3m&L�=��h3����z~��#�\�l :�F,j@�� ʱ�wQT����8�"kJO���6�֚l����}���R�>ډK���]��y����&����p�}b��;N�1�m�r$�|��7�>e�@B�TM*-iH��g�D�)� E�m�|�ؘbҗ�a��Ҿ����t4���o���G��*oCN�rP���Q��@z,|?W[0�����:�n,jWiE��W��$~/�hp\��?��{(�0���+�Y8rΟ�+����>S-S����VN;�}�s?.����� w�9��˟<���Mq4�Wv'��{)0�1mB��V����W[�����8�/<� �%���wT^�5���b��)iM� pg�N�&ݝ��VO~�q���u���9� ����!��J27����$O-���! �:�%H��� ـ����y�ΠM=t{!S�� oK8������t<����è:a������[�����ա�H���~��w��Qz`�po�^ ����Q��n� �,uu�C�$ ^���,������8�#��:�6��e�|~���!�3�3.�\0��q��o�4`.|� ����y�Q�`~;�d�ׯ,��O�Zw�������`73�v�܋�<���Ȏ�� ـ4k��5�K�a�u�=9Yd��$>x�A�&�� j0� ���vF��� Y�|�y��� ~�6�@c��1vOp�Ig����4��l�OD���L����� R���c���j�_�uX6��3?nk��Wy�f;^*B� ��@�~a�`��Eu������+���6�L��.ü>��}y���}_�O�6�͐�:�YrG�X��kG�����l^w���~㒶sy��Iu�!� W ��X��N�7BV��O��!X�2����wvG�R�f�T#�����t�/?���%8�^�W�aT��G�cL�M���I��(J����1~�8�?aT ���]����AS�E��(��*E}� 2��#I/�׍qz��^t�̔���b�Yz4x���t�){ OH��+(E��A&�N�������XT��o��"�XC��'���)}�J�z�p� ��~5�}�^����+�6����w��c��Q�|Lp�d�H��}�(�.|����k��c4^�"�����Z?ȕ ��a<�L�!039C� �Eu�C�F�Ew�ç ;�n?�*o���B�8�bʝ���'#Rqf���M}7����]����s2tcS{�\icTx;�\��7K���P���ʇ Z O-��~��c>"��?�������P��E��O�8��@�8��G��Q�g�a�Վ���󁶠�䧘��_%#r�>�1�z�a��eb��qcPѵ��n���#L��� =��׀t� L�7�`��V���A{�C:�g���e@�w1 Xp3�c3�ġ����p��M"'-�@n4���fG��B3�DJ�8[Jo�ߐ���gK)ƛ��$���� ���8�3�����+���� �����6�ʻ���� ���S�kI�*KZlT _`���?��K����QK�d����B`�s}�>���`��*�>��,*@J�d�oF*����弝��O}�k��s��]��y�ߘ��c1G�V���<=�7��7����6�q�PT��tXԀ�!9*4�4Tހ3XΛex�46���Y��D ����� �BdemDa����\�_l,��G�/���֌7���Y�](�xTt^%�GE�����4�}bT���ڹ�����;Y)���B�Q��u��>J/J �⮶.�XԄ��j�ݳ�+E��d ��r�5�_D�1 ��o�� �B�x�΢�#���<��W�����8���R6�@g�M�.��� dr�D��>(otU��@x=��~v���2� ӣ�d�oBd��3�eO�6�㣷�����ݜ6��6Y��Qz`��S��{���\P�~z m5{J/L��1������<�e�ͅPu�b�]�ϔ���'������f�b� Zpw��c`"��i���BD@:)ִ�:�]��hv�E�w���T�l��P���"Ju�}��وV J��G6��. J/�Qgl߭�e�����@�z�Zev2u�)]կ�����7x���s�M�-<ɯ�c��r�v�����@��$�ޮ}lk���a���'����>x��O\�ZFu>�����ck#��&:��`�$�ai�>2Δ����l���oF[h��lE�ܺ�Πk:)���`�� $[6�����9�����kOw�\|���8}������ބ:��񶐕��I�A1/�=�2[�,�!��.}gN#�u����b��� ~��݊��}34q����d�E��Lc��$��"�[q�U�硬g^��%B �z���r�pJ�ru%v\h1Y�ne`ǥ:g���pQM~�^�Xi� ��`S�:V29.�P���V�?B�k�� AEvw%�_�9C�Q����wKekPؠ�\�;Io d�{ ߞo�c1eP����\� `����E=���@K<�Y���eڼ�J���w����{av�F�'�M�@/J��+9p���|]�����Iw &`��8���&M�hg��[�{��Xj��%��Ӓ�$��(����ʹN���<>�I���RY���K2�NPlL�ɀ)��&e����B+ь����( � �JTx���_?EZ� }@ 6�U���뙢ط�z��dWI�n` D����噥�[��uV��"�G&Ú����2g�}&m��?ċ�"����Om#��������� ��{�ON��"S�X��Ne��ysQ���@Fn��Vg���dX�~nj�]J�<�K]:��FW��b�������62�=��5f����JKw��bf�X�55��~J �%^����:�-�QIE��P��v�nZum� z � ~ə ���� ���ة����;�f��\v���g�8�1��f24;�V���ǔ�)����9���1\��c��v�/'Ƞ�w�������$�4�R-��t���� e�6�/�ġ �̕Ecy�J���u�B���<�W�ַ~�w[B1L۲�-JS΂�{���΃������A��20�c#��@ 0!1@AP"#2Q`$3V�%45a6�FRUq��� ����^7ׅ,$n�������+��F�`��2X'��0vM��p�L=������5��8������u�p~���.�`r�����\���O��,ư�0oS ��_�M�����l���4�kv\JSd���x���SW�<��Ae�IX����������$I���w�:S���y���›R��9�Q[���,�5�;�@]�%���u�@ *ro�lbI �� ��+���%m:�͇ZV�����u�̉����θau<�fc�.����{�4Ա� �Q����*�Sm��8\ujqs]{kN���)qO�y�_*dJ�b�7���yQqI&9�ԌK!�M}�R�;������S�T���1���i[U�ɵz�]��U)V�S6���3$K{�ߊ<�(� E]Զ[ǼENg�����'�\?#)Dkf��J���o��v���'�%ƞ�&K�u�!��b�35LX�Ϸ��63$K�a�;�9>,R��W��3�3� d�JeTYE.Mϧ��-�o�j3+y��y^�c�������VO�9NV\nd�1 ��!͕_)a�v;����թ�M�lWR1��)El��P;��yوÏ�u 3�k�5Pr6<�⒲l�!˞*��u־�n�!�l:����UNW ��%��Chx8vL'��X�@��*��)���̮��ˍ��� ���D-M�+J�U�kvK����+�x8��cY������?�Ԡ��~3mo��|�u@[XeY�C�\Kp�x8�oC�C�&����N�~3-H���� ��MX�s�u<`���~"WL��$8ξ��3���a�)|:@�m�\���^�`�@ҷ)�5p+��6���p�%i)P M���ngc�����#0Aruz���RL+xSS?���ʮ}()#�t��mˇ!��0}}y����<�e� �-ή�Ԩ��X������ MF���ԙ~l L.3���}�V뽺�v�����멬��Nl�)�2����^�Iq��a��M��qG��T�����c3#������3U�Ǎ���}��לS�|qa��ڃ�+���-��2�f����/��bz��ڐ�� �ݼ[2�ç����k�X�2�* �Z�d���J�G����M*9W���s{��w���T��x��y,�in�O�v��]���n����P�$�JB@=4�OTI�n��e�22a\����q�d���%�$��(���:���: /*�K[PR�fr\nڙdN���F�n�$�4�[�� U�zƶ����� �mʋ���,�ao�u 3�z� �x��Kn����\[��VFmbE;�_U��&V�Gg�]L�۪&#n%�$ɯ�dG���D�TI=�%+AB�Ru#��b4�1�»x�cs�YzڙJG��f��Il��d�eF'T� iA��T���uC�$����Y��H?����[!G`}���ͪ� �纤Hv\������j�Ex�K���!���OiƸ�Yj�+u-<���'q����uN�*�r\��+�]���<�wOZ.fp�ێ��,-*)V?j-kÊ#�`�r��dV����(�ݽBk�����G�ƛk�QmUڗe��Z���f}|����8�8��a���i��3'J�����~G_�^���d�8w������ R�`(�~�.��u���l�s+g�bv���W���lGc}��u���afE~1�Ue������Z�0�8�=e�� f@/�jqEKQQ�J��oN��J���W5~M>$6�Lt�;$ʳ{���^��6�{����v6���ķܰg�V�cnn �~z�x�«�,2�u�?cE+Ș�H؎�%�Za�)���X>uW�Tz�Nyo����s���FQƤ��$��*�&�LLXL)�1�" L��eO��ɟ�9=���:t��Z���c��Ž���Y?�ӭV�wv�~,Y��r�ۗ�|�y��GaF�����C�����.�+� ���v1���fήJ�����]�S��T��B��n5sW}y�$��~z�'�c ��8 ��� ,! �p��VN�S��N�N�q��y8z˱�A��4��*��'������2n<�s���^ǧ˭P�Jޮɏ�U�G�L�J�*#��<�V��t7�8����TĜ>��i}K%,���)[��z�21z ?�N�i�n1?T�I�R#��m-�����������������1����lA�`��fT5+��ܐ�c�q՝��ʐ��,���3�f2U�եmab��#ŠdQ�y>\��)�SLY����w#��.���ʑ�f��� ,"+�w�~�N�'�c�O�3F�������N<���)j��&��,-� �љ���֊�_�zS���TǦ����w�>��?�������n��U仆�V���e�����0���$�C�d���rP �m�׈e�Xm�Vu� �L��.�bֹ��� �[Դaզ���*��\y�8�Է:�Ez\�0�Kq�C b��̘��cө���Q��=0Y��s�N��S.���3.���O�o:���#���v7�[#߫ ��5�܎�L���Er4���9n��COWlG�^��0k�%<���ZB���aB_���������'=��{i�v�l�$�uC���mƎҝ{�c㱼�y]���W�i ��ߧc��m�H� m�"�"�����;Y�ߝ�Z�Ǔ�����:S#��|}�y�,/k�Ld� TA�(�AI$+I3��;Y*���Z��}|��ӧO��d�v��..#:n��f>�>���ȶI�TX��� 8��y����"d�R�|�)0���=���n4��6ⲑ�+��r<�O�܂~zh�z����7ܓ�HH�Ga롏���nCo�>������a ���~]���R���̲c?�6(�q�;5%� |�uj�~z8R=X��I�V=�|{v�Gj\gc��q����z�؋%M�ߍ����1y��#��@f^���^�>N�����#x#۹��6�Y~�?�dfPO��{��P�4��V��u1E1J �*|���%���JN��`eWu�zk M6���q t[�� ��g�G���v��WIG��u_ft����5�j�"�Y�:T��ɐ���*�;� e5���4����q$C��2d�}���� _S�L#m�Yp��O�.�C�;��c����Hi#֩%+) �Ӎ��ƲV���SYź��g |���tj��3�8���r|���V��1#;.SQ�A[���S������#���`n�+���$��$I �P\[�@�s��(�ED�z���P��])8�G#��0B��[ى��X�II�q<��9�~[Z멜�Z�⊔IWU&A>�P~�#��dp<�?����7���c��'~���5 ��+$���lx@�M�dm��n<=e�dyX��?{�|Aef ,|n3�<~z�ƃ�uۧ�����P��Y,�ӥQ�*g�#먙R�\���;T��i,��[9Qi歉����c>]9�� ��"�c��P�� �Md?٥��If�ت�u��k��/����F��9�c*9��Ǎ:�ØF���z�n*�@|I�ށ9����N3{'��[�'ͬ�Ҳ4��#}��!�V� Fu��,�,mTIk���v C�7v���B�6k�T9��1�*l� '~��ƞF��lU��'�M ����][ΩũJ_�{�i�I�n��$���L�� j��O�dx�����kza۪��#�E��Cl����x˘�o�����V���ɞ�ljr��)�/,�߬h�L��#��^��L�ф�,íMƁe�̩�NB�L�����iL����q�}��(��q��6IçJ$�W�E$��:������=#����(�K�B����zђ <��K(�N�۫K�w��^O{!����)�H���>x�������lx�?>Պ�+�>�W���,Ly!_�D���Ō�l���Q�!�[ �S����J��1��Ɛ�Y}��b,+�Lo�x�ɓ)����=�y�oh�@�꥟/��I��ѭ=��P�y9��� �ۍYӘ�e+�p�Jnϱ?V\SO%�(�t� ���=?MR�[Ș�����d�/ ��n�l��B�7j� ��!�;ӥ�/�[-���A�>�dN�sLj ��,ɪv��=1c�.SQ�O3�U���ƀ�ܽ�E����������̻��9G�ϷD�7(�}��Ävӌ\�y�_0[w ���<΍>����a_��[0+�L��F.�޺��f�>oN�T����q;���y\��bՃ��y�jH�<|q-eɏ�_?_9+P���Hp$�����[ux�K w�Mw��N�ی'$Y2�=��q���KB��P��~������Yul:�[<����F1�2�O���5=d����]Y�sw:���Ϯ���E��j,_Q��X��z`H1,#II ��d�wr��P˂@�ZJV����y$�\y�{}��^~���[:N����ߌ�U�������O��d�����ؾe��${p>G��3c���Ė�lʌ�� ת��[��`ϱ�-W����dg�I��ig2��� ��}s ��ؤ(%#sS@���~���3�X�nRG�~\jc3�v��ӍL��M[JB�T��s3}��j�Nʖ��W����;7��ç?=X�F=-�=����q�ߚ���#���='�c��7���ڑW�I(O+=:uxq�������������e2�zi+�kuG�R��������0�&e�n���iT^J����~\jy���p'dtG��s����O��3����9* �b#Ɋ�� p������[Bws�T�>d4�ۧs���nv�n���U���_�~,�v����ƜJ1��s�� �QIz��)�(lv8M���U=�;����56��G���s#�K���MP�=��LvyGd��}�VwWBF�'�à �?MH�U�g2�� ����!�p�7Q��j��ڴ����=��j�u��� Jn�A s���uM������e��Ɔ�Ҕ�!)'��8Ϣ�ٔ��ޝ(��Vp���צ֖d=�IC�J�Ǡ{q������kԭ�߸���i��@K����u�|�p=..�*+����x�����z[Aqġ#s2a�Ɗ���RR�)*HRsi�~�a &f��M��P����-K�L@��Z��Xy�'x�{}��Zm+���:�)�) IJ�-i�u���� ���ܒH��'�L(7�y�GӜq���� j��� 6ߌg1�g�o���,kر���tY�?W,���p���e���f�OQS��!K�۟cҒA�|ս�j�>��=⬒��˧L[�� �߿2JaB~R��u�:��Q�] �0H~���]�7��Ƽ�I���(}��cq '�ήET���q�?f�ab���ӥvr� �)o��-Q��_'����ᴎo��K������;��V���o��%���~OK ����*��b�f:���-ťIR��`B�5!RB@���ï�� �u �̯e\�_U�_������� g�ES��3�������QT��a����x����U<~�c?�*�#]�MW,[8O�a�x��]�1bC|踤�P��lw5V%�)�{t�<��d��5���0i�XSU��m:��Z�┵�i�"��1�^B�-��P�hJ��&)O��*�D��c�W��vM��)����}���P��ܗ-q����\mmζZ-l@�}��a��E�6��F�@��&Sg@���ݚ�M����� ȹ 4����#p�\H����dYDo�H���"��\��..R�B�H�z_�/5˘����6��KhJR��P�mƶi�m���3�,#c�co��q�a)*Pt����R�m�k�7x�D�E�\Y�閣_X�<���~�)���c[[�BP����6�Yq���S��0����%_����;��Àv�~�| VS؇ ��'O0��F0��\���U�-�d@�����7�SJ*z��3n��y��P����O���������m�~�P�3|Y��ʉr#�C�<�G~�.,! ���bqx���h~0=��!ǫ�jy����l�O,�[B��~��|9��ٱ����Xly�#�i�B��g%�S��������tˋ���e���ې��\[d�t)��.+u�|1 ������#�~Oj����hS�%��i.�~X���I�H�m��0n���c�1uE�q��cF�RF�o���7� �O�ꮧ� ���ۛ{��ʛi5�rw?׌#Qn�TW��~?y$��m\�\o����%W� ?=>S�N@�� �Ʈ���R����N�)�r"C�:��:����� �����#��qb��Y�. �6[��2K����2u�Ǧ�HYR��Q�MV��� �G�$��Q+.>�����nNH��q�^��� ����q��mM��V��D�+�-�#*�U�̒ ���p욳��u:�������IB���m���PV@O���r[b= �� ��1U�E��_Nm�yKbN�O���U�}�the�`�|6֮P>�\2�P�V���I�D�i�P�O;�9�r�mAHG�W�S]��J*�_�G��+kP�2����Ka�Z���H�'K�x�W�MZ%�O�YD�Rc+o��?�q��Ghm��d�S�oh�\�D�|:W������UA�Qc yT�q������~^�H��/��#p�CZ���T�I�1�ӏT����4��"�ČZ�����}��`w�#�*,ʹ�� ��0�i��課�Om�*�da��^gJ݅{���l�e9uF#T�ֲ��̲�ٞC"�q���ߍ ոޑ�o#�XZTp����@ o�8��(jd��xw�]�,f���`~�|,s��^����f�1���t��|��m�򸄭/ctr��5s��7�9Q�4�H1꠲BB@l9@���C�����+�wp�xu�£Yc�9��?`@#�o�mH�s2��)�=��2�.�l����jg�9$�Y�S�%*L������R�Y������7Z���,*=�䷘$�������arm�o�ϰ���UW.|�r�uf����IGw�t����Zwo��~5 ��YյhO+=8fF�)�W�7�L9lM�̘·Y���֘YLf�큹�pRF���99.A �"wz��=E\Z���'a� 2��Ǚ�#;�'}�G���*��l��^"q��+2FQ� hj��kŦ��${���ޮ-�T�٭cf�|�3#~�RJ����t��$b�(R��(����r���dx� >U b�&9,>���%E\� Ά�e�$��'�q't��*�א���ެ�b��-|d���SB�O�O��$�R+�H�)�܎�K��1m`;�J�2�Y~9��O�g8=vqD`K[�F)k�[���1m޼c��n���]s�k�z$@��)!I �x՝"v��9=�ZA=`Ɠi �:�E��)`7��vI��}d�YI�_ �o�:ob���o ���3Q��&D&�2=�� �Ά��;>�h����y.*ⅥS������Ӭ�+q&����j|UƧ����}���J0��WW< ۋS�)jQR�j���Ư��rN)�Gű�4Ѷ(�S)Ǣ�8��i��W52���No˓� ۍ%�5brOn�L�;�n��\G����=�^U�dI���8$�&���h��'���+�(������cȁ߫k�l��S^���cƗjԌE�ꭔ��gF���Ȓ��@���}O���*;e�v�WV���YJ\�]X'5��ղ�k�F��b 6R�o՜m��i N�i����>J����?��lPm�U��}>_Z&�KK��q�r��I�D�Չ~�q�3fL�:S�e>���E���-G���{L�6p�e,8��������QI��h��a�Xa��U�A'���ʂ���s�+טIjP�-��y�8ۈZ?J$��W�P� ��R�s�]��|�l(�ԓ��sƊi��o(��S0��Y� 8�T97.�����WiL��c�~�dxc�E|�2!�X�K�Ƙਫ਼�$((�6�~|d9u+�qd�^3�89��Y�6L�.I�����?���iI�q���9�)O/뚅����O���X��X�V��ZF[�یgQ�L��K1���RҖr@v�#��X�l��F���Нy�S�8�7�kF!A��sM���^rkp�jP�DyS$N���q��nxҍ!U�f�!eh�i�2�m���`�Y�I�9r�6� �TF���C}/�y�^���Η���5d�'��9A-��J��>{�_l+�`��A���[�'��յ�ϛ#w:݅�%��X�}�&�PSt�Q�"�-��\縵�/����$Ɨh�Xb�*�y��BS����;W�ջ_mc�����vt?2}1�;qS�d�d~u:2k5�2�R�~�z+|HE!)�Ǟl��7`��0�<�,�2*���Hl-��x�^����'_TV�gZA�'j� ^�2Ϊ��N7t�����?w�� �x1��f��Iz�C-Ȗ��K�^q�;���-W�DvT�7��8�Z�������� hK�(P:��Q- �8�n�Z���܃e貾�<�1�YT<�,�����"�6{/ �?�͟��|1�:�#g��W�>$����d��J��d�B��=��jf[��%rE^��il:��B���x���Sּ�1հ��,�=��*�7 fcG��#q� �eh?��2�7�����,�!7x��6�n�LC�4x��},Geǝ�tC.��vS �F�43��zz\��;QYC,6����~;RYS/6���|2���5���v��T��i����������mlv��������&� �nRh^ejR�LG�f���? �ۉҬܦƩ��|��Ȱ����>3����!v��i�ʯ�>�v��オ�X3e���_1z�Kȗ\<������!�8���V��]��?b�k41�Re��T�q��mz��TiOʦ�Z��Xq���L������q"+���2ۨ��8}�&N7XU7Ap�d�X��~�׿��&4e�o�F��� �H����O���č�c�� 懴�6���͉��+)��v;j��ݷ�� �UV�� i��� j���Y9GdÒJ1��詞�����V?h��l����l�cGs�ځ�������y�Ac�����\V3�? �� ܙg�>qH�S,�E�W�[�㺨�uch�⍸�O�}���a��>�q�6�n6����N6�q������N ! 1AQaq�0@����"2BRb�#Pr���3C`��Scst���$4D���%Td�� ?���N����a��3��m���C���w��������xA�m�q�m���m������$����4n淿t'��C"w��zU=D�\R+w�p+Y�T�&�պ@��ƃ��3ޯ?�Aﶂ��aŘ���@-�����Q�=���9D��ռ�ѻ@��M�V��P��܅�G5�f�Y<�u=,EC)�<�Fy'�"�&�չ�X~f��l�KԆV��?�� �W�N����=(� �;���{�r����ٌ�Y���h{�١������jW����P���Tc�����X�K�r��}���w�R��%��?���E��m�� �Y�q|����\lEE4���r���}�lsI�Y������f�$�=�d�yO����p�����yBj8jU�o�/�S��?�U��*������ˍ�0������u�q�m [�?f����a�� )Q�>����6#������� ?����0UQ����,IX���(6ڵ[�DI�MNލ�c&���υ�j\��X�R|,4��� j������T�hA�e��^���d���b<����n�� �즇�=!���3�^�`j�h�ȓr��jẕ�c�,ٞX����-����a�ﶔ���#�$��]w�O��Ӫ�1y%��L�Y<�wg#�ǝ�̗`�x�xa�t�w��»1���o7o5��>�m뭛C���Uƃߜ}�C���y1Xνm�F8�jI���]����H���ۺиE@I�i;r�8ӭ����V�F�Շ| ��&?�3|x�B�MuS�Ge�=Ӕ�#BE5G�����Y!z��_e��q�р/W>|-�Ci߇�t�1ޯќd�R3�u��g�=0 5��[?�#͏��q�cf���H��{ ?u�=?�?ǯ���}Z��z���hmΔ�BFTW�����<�q�(v� ��!��z���iW]*�J�V�z��gX֧A�q�&��/w���u�gYӘa���; �i=����g:��?2�dž6�ى�k�4�>�Pxs����}������G�9��3 ���)gG�R<>r h�$��'nc�h�P��Bj��J�ҧH� -��N1���N��?��~��}-q!=��_2hc�M��l�vY%UE�@|�v����M2�.Y[|y�"Eï��K�ZF,�ɯ?,q�?v�M 80jx�"�;�9vk�����+ ֧�� �ȺU��?�%�vcV��mA�6��Qg^M����A}�3�nl� QRN�l8�kkn�'�����(��M�7m9و�q���%ޟ���*h$Zk"��$�9��: �?U8�Sl��,,|ɒ��xH(ѷ����Gn�/Q�4�P��G�%��Ա8�N��!� �&�7�;���eKM7�4��9R/%����l�c>�x;������>��C�:�����t��h?aKX�bhe�ᜋ^�$�Iհ �hr7%F$�E��Fd���t��5���+�(M6�t����Ü�UU|zW�=a�Ts�Tg������dqP�Q����b'�m���1{|Y����X�N��b �P~��F^F:����k6�"�j!�� �I�r�`��1&�-$�Bevk:y���#yw��I0��x��=D�4��tU���P�ZH��ڠ底taP��6����b>�xa����Q�#� WeF��ŮNj�p�J* mQ�N����*I�-*�ȩ�F�g�3 �5��V�ʊ�ɮ�a��5F���O@{���NX��?����H�]3��1�Ri_u��������ѕ�� ����0��� F��~��:60�p�͈�S��qX#a�5>���`�o&+�<2�D����: �������ڝ�$�nP���*)�N�|y�Ej�F�5ټ�e���ihy�Z �>���k�bH�a�v��h�-#���!�Po=@k̆IEN��@��}Ll?j�O������߭�ʞ���Q|A07x���wt!xf���I2?Z��<ץ�T���cU�j��]��陎Ltl �}5�ϓ��$�,��O�mˊ�;�@O��jE��j(�ا,��LX���LO���Ц�90�O �.����a��nA���7������j4 ��W��_ٓ���zW�jcB������y՗+EM�)d���N�g6�y1_x��p�$Lv:��9�"z��p���ʙ$��^��JԼ*�ϭ����o���=x�Lj�6�J��u82�A�H�3$�ٕ@�=Vv�]�'�qEz�;I˼��)��=��ɯ���x �/�W(V���p�����$ �m�������u�����񶤑Oqˎ�T����r��㠚x�sr�GC��byp�G��1ߠ�w e�8�$⿄����/�M{*}��W�]˷.�CK\�ުx���/$�WPw���r� |i���&�}�{�X� �>��$-��l���?-z���g����lΆ���(F���h�vS*���b���߲ڡn,|)mrH[���a�3�ר�[1��3o_�U�3�TC�$��(�=�)0�kgP���� ��u�^=��4 �WYCҸ:��vQ�ר�X�à��tk�m,�t*��^�,�}D*� �"(�I��9R����>`�`��[~Q]�#af��i6l��8���6�:,s�s�N6�j"�A4���IuQ��6E,�GnH��zS�HO�uk�5$�I�4��ؤ�Q9�@��C����wp�BGv[]�u�Ov���0I4���\��y�����Q�Ѹ��~>Z��8�T��a��q�ޣ;z��a���/��S��I:�ܫ_�|������>=Z����8:�S��U�I�J��"IY���8%b8���H��:�QO�6�;7�I�S��J��ҌAά3��>c���E+&jf$eC+�z�;��V����� �r���ʺ������my�e���aQ�f&��6�ND��.:��NT�vm�<- u���ǝ\MvZY�N�NT��-A�>jr!S��n�O 1�3�Ns�%�3D@���`������ܟ 1�^c<���� �a�ɽ�̲�Xë#�w�|y�cW�=�9I*H8�p�^(4���՗�k��arOcW�tO�\�ƍR��8����'�K���I�Q�����?5�>[�}��yU�ײ -h��=��% q�ThG�2�)���"ו3]�!kB��*p�FDl�A���,�eEi�H�f�Ps�����5�H:�Փ~�H�0Dت�D�I����h�F3�������c��2���E��9�H��5�zԑ�ʚ�i�X�=:m�xg�hd(�v����׊�9iS��O��d@0ڽ���:�p�5�h-��t�&���X�q�ӕ,��ie�|���7A�2���O%P��E��htj��Y1��w�Ѓ!����  ���� ࢽ��My�7�\�a�@�ţ�J �4�Ȼ�F�@o�̒?4�wx��)��]�P��~�����u�����5�����7X ��9��^ܩ�U;Iꭆ 5 �������eK2�7(�{|��Y׎ �V��\"���Z�1� Z�����}��(�Ǝ"�1S���_�vE30>���p;� ΝD��%x�W�?W?v����o�^V�i�d��r[��/&>�~`�9Wh��y�;���R��� ;;ɮT��?����r$�g1�K����A��C��c��K��l:�'��3 c�ﳯ*"t8�~l��)���m��+U,z��`(�>yJ�?����h>��]��v��ЍG*�{`��;y]��I�T� ;c��NU�fo¾h���/$���|NS���1�S�"�H��V���T���4��uhǜ�]�v;���5�͠x��'C\�SBpl���h}�N����� A�Bx���%��ޭ�l��/����T��w�ʽ]D�=����K���ž�r㻠l4�S�O?=�k �M:� ��c�C�a�#ha���)�ѐxc�s���gP�iG��{+���x���Q���I= �� z��ԫ+ �8"�k�ñ�j=|����c ��y��CF��/��*9ж�h{ �?4�o� ��k�m�Q�N�x��;�Y��4膚�a�w?�6�>e]�����Q�r�:����g�,i"�����ԩA�*M�<�G��b�if��l^M��5� �Ҩ�{����6J��ZJ�����P�*�����Y���ݛu�_4�9�I8�7���������,^ToR���m4�H��?�N�S�ѕw��/S��甍�@�9H�S�T��t�ƻ���ʒU��*{Xs�@����f�����֒Li�K{H�w^���������Ϥm�tq���s� ���ք��f:��o~s��g�r��ט� �S�ѱC�e]�x���a��) ���(b-$(�j>�7q�B?ӕ�F��hV25r[7 Y� }L�R��}����*sg+��x�r�2�U=�*'WS��ZDW]�WǞ�<��叓���{�$�9Ou4��y�90-�1�'*D`�c�^o?(�9��u���ݐ��'PI&� f�Jݮ�������:wS����jfP1F:X �H�9dԯ���˝[�_54 �}*;@�ܨ�� ð�yn�T���?�ןd�#���4rG�ͨ��H�1�|-#���Mr�S3��G�3�����)�.᧏3v�z֑��r����$G"�`j �1t��x0<Ɔ�Wh6�y�6��,œ�Ga��gA����y��b��)��h�D��ß�_�m��ü �gG;��e�v��ݝ�nQ� ��C����-�*��o���y�a��M��I�>�<���]obD��"�:���G�A��-\%LT�8���c�)��+y76���o�Q�#*{�(F�⽕�y����=���rW�\p���۩�c���A���^e6��K������ʐ�cVf5$�'->���ՉN"���F�"�UQ@�f��Gb~��#�&�M=��8�ט�JNu9��D��[̤�s�o�~������ G��9T�tW^g5y$b��Y'��س�Ǵ�=��U-2 #�MC�t(�i� �lj�@Q 5�̣i�*�O����s�x�K�f��}\��M{E�V�{�υ��Ƈ�����);�H����I��fe�Lȣr�2��>��W�I�Ȃ6������i��k�� �5�YOxȺ����>��Y�f5'��|��H+��98pj�n�.O�y�������jY��~��i�w'������l�;�s�2��Y��:'lg�ꥴ)o#'Sa�a�K��Z� �m��}�`169�n���"���x��I ��*+� }F<��cГ���F�P�������ֹ*�PqX�x۩��,� ��N�� �4<-����%����:��7����W���u�`����� $�?�I��&����o��o��`v�>��P��"��l���4��5'�Z�gE���8���?��[�X�7(��.Q�-��*���ތL@̲����v��.5���[��=�t\+�CNܛ��,g�SQnH����}*F�G16���&:�t��4ُ"A��̣��$�b �|����#rs��a�����T�� ]�<�j��BS�('$�ɻ� �wP;�/�n��?�ݜ��x�F��yUn�~mL*-�������Xf�wd^�a�}��f�,=t�׵i�.2/wpN�Ep8�OР���•��R�FJ� 55TZ��T �ɭ�<��]��/�0�r�@�f��V��V����Nz�G��^���7hZi����k��3�,kN�e|�vg�1{9]_i��X5y7� 8e]�U����'�-2,���e"����]ot�I��Y_��n�(JҼ��1�O ]bXc���Nu�No��pS���Q_���_�?i�~�x h5d'�(qw52] ��'ޤ�q��o1�R!���`ywy�A4u���h<קy���\[~�4�\ X�Wt/� 6�����n�F�a8��f���z �3$�t(���q��q�x��^�XWeN'p<-v�!�{�(>ӽDP7��ո0�y)�e$ٕv�Ih'Q�EA�m*�H��RI��=:��� ���4牢) �%_iN�ݧ�l]� �Nt���G��H�L��� ɱ�g<���1V�,�J~�ٹ�"K��Q�� 9�HS�9�?@��k����r�;we݁�]I�!{ �@�G�[�"��`���J:�n]�{�cA�E����V��ʆ���#��U9�6����j�#Y�m\��q�e4h�B�7��C�������d<�?J����1g:ٳ���=Y���D�p�ц� ׈ǔ��1�]26؜oS�'��9�V�FVu�P�h�9�xc�oq�X��p�o�5��Ա5$�9W�V(�[Ak�aY錎qf;�'�[�|���b�6�Ck��)��#a#a˙��8���=äh�4��2��C��4tm^ �n'c���]GQ$[Wҿ��i���vN�{Fu ��1�gx��1┷���N�m��{j-,��x�� Ūm�ЧS�[�s���Gna���䑴�� x�p 8<������97�Q���ϴ�v�aϚG��Rt�Һ׈�f^\r��WH�JU�7Z���y)�vg=����n��4�_)y��D'y�6�]�c�5̪�\� �PF�k����&�c;��cq�$~T�7j ���nç]�<�g ":�to�t}�159�<�/�8������m�b�K#g'I'.W�����6��I/��>v��\�MN��g���m�A�yQL�4u�Lj�j9��#44�t��l^�}L����n��R��!��t��±]��r��h6ٍ>�yҏ�N��fU�� ���� Fm@�8}�/u��jb9������he:A�y�ծw��GpΧh�5����l}�3p468��)U��d��c����;Us/�֔�YX�1�O2��uq�s��`hwg�r~�{ R��mhN��؎*q 42�*th��>�#���E����#��Hv�O����q�}�����6�e��\�,Wk�#���X��b>��p}�դ��3���T5��†��6��[��@�P�y*n��|'f�֧>�lư΂�̺����SU�'*�q�p�_S�����M�� '��c�6�����m�� ySʨ;M��r���Ƌ�m�Kxo,���Gm�P��A�G�:��i��w�9�}M(�^�V��$ǒ�ѽ�9���|���� �a����J�SQ�a���r�B;����}���ٻ֢�2�%U���c�#�g���N�a�ݕ�'�v�[�OY'��3L�3�;,p�]@�S��{ls��X�'���c�jw�k'a�.��}�}&�� �dP�*�bK=ɍ!����;3n�gΊU�ߴmt�'*{,=SzfD� A��ko~�G�aoq�_mi}#�m�������P�Xhύ����mxǍ�΂���巿zf��Q���c���|kc�����?���W��Y�$���_Lv����l߶��c���`?����l�j�ݲˏ!V��6����U�Ђ(A���4y)H���p�Z_�x��>���e��R��$�/�`^'3qˏ�-&Q�=?��CFVR �D�fV�9��{�8g�������n�h�(P"��6�[�D���< E�����~0<@�`�G�6����Hг�cc�� �c�K.5��D��d�B���`?�XQ��2��ٿyqo&+�1^� DW�0�ꊩ���G�#��Q�nL3��c���������/��x ��1�1[y�x�პCW��C�c�UĨ80�m�e�4.{�m��u���I=��f�����0QRls9���f���������9���~f�����Ǩ��a�"@�8���ȁ�Q����#c�ic������G��$���G���r/$W�(��W���V�"��m�7�[m�A�m����bo��D� j����۳� l���^�k�h׽����� ��#� iXn�v��eT�k�a�^Y�4�BN��ĕ��0 !01@Q"2AaPq3BR������?���@4�Q�����T3,���㺠�W�[=JK�Ϟ���2�r^7��vc�:�9 �E�ߴ�w�S#d���Ix��u��:��Hp��9E!�� V 2;73|F��9Y���*ʬ�F��D����u&���y؟��^EA��A��(ɩ���^��GV:ݜDy�`��Jr29ܾ�㝉��[���E;Fzx��YG��U�e�Y�C���� ����v-tx����I�sם�Ę�q��Eb�+P\ :>�i�C'�;�����k|z�رn�y]�#ǿb��Q��������w�����(�r|ӹs��[�D��2v-%��@;�8<a���[\o[ϧw��I!��*0�krs)�[�J9^��ʜ��p1)� "��/_>��o��<1����A�E�y^�C��`�x1'ܣn�p��s`l���fQ��):�l����b>�Me�jH^?�kl3(�z:���1ŠK&?Q�~�{�ٺ�h�y���/�[��V�|6��}�KbX����mn[-��7�5q�94�������dm���c^���h� X��5��<�eޘ>G���-�}�دB�ޟ� ��|�rt�M��V+�]�c?�-#ڛ��^ǂ}���Lkr���O��u�>�-D�ry� D?:ޞ�U��ǜ�7�V��?瓮�"�#���r��չģVR;�n���/_� ؉v�ݶe5d�b9��/O��009�G���5n�W����JpA�*�r9�>�1��.[t���s�F���nQ� V 77R�]�ɫ8����_0<՜�IF�u(v��4��F�k�3��E)��N:��yڮe��P�`�1}�$WS��J�SQ�N�j�ٺ��޵�#l���ј(�5=��5�lǏmoW�v-�1����v,W�mn��߀$x�<����v�j(����c]��@#��1������Ǔ���o'��u+����;G�#�޸��v-lη��/(`i⣍Pm^���ԯ̾9Z��F��������n��1��� ��]�[��)�'������:�֪�W��FC����� �B9،!?���]��V��A�Վ�M��b�w��G F>_DȬ0¤�#�QR�[V��kz���m�w�"��9ZG�7'[��=�Q����j8R?�zf�\a�=��O�U����*oB�A�|G���2�54 �p��.w7� �� ��&������ξxGHp� B%��$g�����t�Џ򤵍z���HN�u�Я�-�'4��0��;_��3 !01"@AQa2Pq#3BR������?��ʩca��en��^��8���<�u#��m*08r��y�N"�<�Ѳ0��@\�p��� �����Kv�D��J8�Fҽ� �f�Y��-m�ybX�NP����}�!*8t(�OqѢ��Q�wW�K��ZD��Δ^e��!� ��B�K��p~�����e*l}z#9ң�k���q#�Ft�o��S�R����-�w�!�S���Ӥß|M�l޶V��!eˈ�8Y���c�ЮM2��tk���� ������J�fS����Ö*i/2�����n]�k�\���|4yX�8��U�P.���Ы[���l��@"�t�<������5�lF���vU�����W��W��;�b�cД^6[#7@vU�xgZv��F�6��Q,K�v��� �+Ъ��n��Ǣ��Ft���8��0��c�@�!�Zq s�v�t�;#](B��-�nῃ~���3g������5�J�%���O������n�kB�ĺ�.r��+���#�N$?�q�/�s�6��p��a����a��J/��M�8��6�ܰ"�*������ɗud"\w���aT(����[��F��U՛����RT�b���n�*��6���O��SJ�.�ij<�v�MT��R\c��5l�sZB>F��<7�;EA��{��E���Ö��1U/�#��d1�a�n.1ě����0�ʾR�h��|�R��Ao�3�m3 ��%�� ���28Q� ��y��φ���H�To�7�lW>����#i`�q���c����a��� �m,B�-j����݋�'mR1Ήt�>��V��p���s�0IbI�C.���1R�ea�����]H�6����������4B>��o��](��$B���m�����a�!=��?�B� K�Ǿ+�Ծ"�n���K��*��+��[T#�{E�J�S����Q�����s�5�:�U�\wĐ�f�3����܆&�)����I���Ԇw��E T�lrTf6Q|R�h:��[K�� �z��c֧�G�C��%\��_�a�84��HcO�bi��ؖV��7H �)*ģK~Xhչ0��4?�0��� �E<���}3���#���u�?�� ��|g�S�6ꊤ�|�I#Hڛ� �ա��w�X��9��7���Ŀ%�SL��y6č��|�F�a 8���b��$�sק�h���b9RAu7�˨p�Č�_\*w��묦��F ����4D~�f����|(�"m���NK��i�S�>�$d7SlA��/�²����SL��|6N�}���S�˯���g��]6��; �#�.��<���q'Q�1|KQ$�����񛩶"�$r�b:���N8�w@��8$�� �AjfG|~�9F ���Y��ʺ��Bwؒ������M:I岎�G��`s�YV5����6��A �b:�W���G�q%l�����F��H���7�������Fsv7��k�� 403WebShell
403Webshell
Server IP : 13.127.148.211  /  Your IP : 216.73.216.159
Web Server : Apache/2.4.41 (Ubuntu)
System : Linux ip-172-31-43-195 5.15.0-1083-aws #90~20.04.1-Ubuntu SMP Tue Apr 22 09:59:53 UTC 2025 x86_64
User : www-data ( 33)
PHP Version : 7.4.3-4ubuntu2.29
Disable Function : pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wifcontinued,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_get_handler,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority,pcntl_async_signals,pcntl_unshare,
MySQL : OFF  |  cURL : ON  |  WGET : ON  |  Perl : ON  |  Python : OFF  |  Sudo : ON  |  Pkexec : ON
Directory :  /proc/114785/root/usr/lib/modules/5.15.0-1028-aws/build/include/linux/

Upload File :
current_dir [ Writeable ] document_root [ Writeable ]

 

Command :


[ Back ]     

Current File : /proc/114785/root/usr/lib/modules/5.15.0-1028-aws/build/include/linux/ntb.h
/*
 * This file is provided under a dual BSD/GPLv2 license.  When using or
 *   redistributing this file, you may do so under either license.
 *
 *   GPL LICENSE SUMMARY
 *
 *   Copyright (C) 2015 EMC Corporation. All Rights Reserved.
 *   Copyright (C) 2016 T-Platforms. All Rights Reserved.
 *
 *   This program is free software; you can redistribute it and/or modify
 *   it under the terms of version 2 of the GNU General Public License as
 *   published by the Free Software Foundation.
 *
 *   This program is distributed in the hope that it will be useful, but
 *   WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *   General Public License for more details.
 *
 *   BSD LICENSE
 *
 *   Copyright (C) 2015 EMC Corporation. All Rights Reserved.
 *   Copyright (C) 2016 T-Platforms. All Rights Reserved.
 *
 *   Redistribution and use in source and binary forms, with or without
 *   modification, are permitted provided that the following conditions
 *   are met:
 *
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copy
 *       notice, this list of conditions and the following disclaimer in
 *       the documentation and/or other materials provided with the
 *       distribution.
 *     * Neither the name of Intel Corporation nor the names of its
 *       contributors may be used to endorse or promote products derived
 *       from this software without specific prior written permission.
 *
 *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * PCIe NTB Linux driver
 *
 * Contact Information:
 * Allen Hubbe <Allen.Hubbe@emc.com>
 */

#ifndef _NTB_H_
#define _NTB_H_

#include <linux/completion.h>
#include <linux/device.h>
#include <linux/interrupt.h>

struct ntb_client;
struct ntb_dev;
struct ntb_msi;
struct pci_dev;

/**
 * enum ntb_topo - NTB connection topology
 * @NTB_TOPO_NONE:	Topology is unknown or invalid.
 * @NTB_TOPO_PRI:	On primary side of local ntb.
 * @NTB_TOPO_SEC:	On secondary side of remote ntb.
 * @NTB_TOPO_B2B_USD:	On primary side of local ntb upstream of remote ntb.
 * @NTB_TOPO_B2B_DSD:	On primary side of local ntb downstream of remote ntb.
 * @NTB_TOPO_SWITCH:	Connected via a switch which supports ntb.
 * @NTB_TOPO_CROSSLINK: Connected via two symmetric switchecs
 */
enum ntb_topo {
	NTB_TOPO_NONE = -1,
	NTB_TOPO_PRI,
	NTB_TOPO_SEC,
	NTB_TOPO_B2B_USD,
	NTB_TOPO_B2B_DSD,
	NTB_TOPO_SWITCH,
	NTB_TOPO_CROSSLINK,
};

static inline int ntb_topo_is_b2b(enum ntb_topo topo)
{
	switch ((int)topo) {
	case NTB_TOPO_B2B_USD:
	case NTB_TOPO_B2B_DSD:
		return 1;
	}
	return 0;
}

static inline char *ntb_topo_string(enum ntb_topo topo)
{
	switch (topo) {
	case NTB_TOPO_NONE:		return "NTB_TOPO_NONE";
	case NTB_TOPO_PRI:		return "NTB_TOPO_PRI";
	case NTB_TOPO_SEC:		return "NTB_TOPO_SEC";
	case NTB_TOPO_B2B_USD:		return "NTB_TOPO_B2B_USD";
	case NTB_TOPO_B2B_DSD:		return "NTB_TOPO_B2B_DSD";
	case NTB_TOPO_SWITCH:		return "NTB_TOPO_SWITCH";
	case NTB_TOPO_CROSSLINK:	return "NTB_TOPO_CROSSLINK";
	}
	return "NTB_TOPO_INVALID";
}

/**
 * enum ntb_speed - NTB link training speed
 * @NTB_SPEED_AUTO:	Request the max supported speed.
 * @NTB_SPEED_NONE:	Link is not trained to any speed.
 * @NTB_SPEED_GEN1:	Link is trained to gen1 speed.
 * @NTB_SPEED_GEN2:	Link is trained to gen2 speed.
 * @NTB_SPEED_GEN3:	Link is trained to gen3 speed.
 * @NTB_SPEED_GEN4:	Link is trained to gen4 speed.
 */
enum ntb_speed {
	NTB_SPEED_AUTO = -1,
	NTB_SPEED_NONE = 0,
	NTB_SPEED_GEN1 = 1,
	NTB_SPEED_GEN2 = 2,
	NTB_SPEED_GEN3 = 3,
	NTB_SPEED_GEN4 = 4
};

/**
 * enum ntb_width - NTB link training width
 * @NTB_WIDTH_AUTO:	Request the max supported width.
 * @NTB_WIDTH_NONE:	Link is not trained to any width.
 * @NTB_WIDTH_1:	Link is trained to 1 lane width.
 * @NTB_WIDTH_2:	Link is trained to 2 lane width.
 * @NTB_WIDTH_4:	Link is trained to 4 lane width.
 * @NTB_WIDTH_8:	Link is trained to 8 lane width.
 * @NTB_WIDTH_12:	Link is trained to 12 lane width.
 * @NTB_WIDTH_16:	Link is trained to 16 lane width.
 * @NTB_WIDTH_32:	Link is trained to 32 lane width.
 */
enum ntb_width {
	NTB_WIDTH_AUTO = -1,
	NTB_WIDTH_NONE = 0,
	NTB_WIDTH_1 = 1,
	NTB_WIDTH_2 = 2,
	NTB_WIDTH_4 = 4,
	NTB_WIDTH_8 = 8,
	NTB_WIDTH_12 = 12,
	NTB_WIDTH_16 = 16,
	NTB_WIDTH_32 = 32,
};

/**
 * enum ntb_default_port - NTB default port number
 * @NTB_PORT_PRI_USD:	Default port of the NTB_TOPO_PRI/NTB_TOPO_B2B_USD
 *			topologies
 * @NTB_PORT_SEC_DSD:	Default port of the NTB_TOPO_SEC/NTB_TOPO_B2B_DSD
 *			topologies
 */
enum ntb_default_port {
	NTB_PORT_PRI_USD,
	NTB_PORT_SEC_DSD
};
#define NTB_DEF_PEER_CNT	(1)
#define NTB_DEF_PEER_IDX	(0)

/**
 * struct ntb_client_ops - ntb client operations
 * @probe:		Notify client of a new device.
 * @remove:		Notify client to remove a device.
 */
struct ntb_client_ops {
	int (*probe)(struct ntb_client *client, struct ntb_dev *ntb);
	void (*remove)(struct ntb_client *client, struct ntb_dev *ntb);
};

static inline int ntb_client_ops_is_valid(const struct ntb_client_ops *ops)
{
	/* commented callbacks are not required: */
	return
		ops->probe			&&
		ops->remove			&&
		1;
}

/**
 * struct ntb_ctx_ops - ntb driver context operations
 * @link_event:		See ntb_link_event().
 * @db_event:		See ntb_db_event().
 * @msg_event:		See ntb_msg_event().
 */
struct ntb_ctx_ops {
	void (*link_event)(void *ctx);
	void (*db_event)(void *ctx, int db_vector);
	void (*msg_event)(void *ctx);
};

static inline int ntb_ctx_ops_is_valid(const struct ntb_ctx_ops *ops)
{
	/* commented callbacks are not required: */
	return
		/* ops->link_event		&& */
		/* ops->db_event		&& */
		/* ops->msg_event		&& */
		1;
}

/**
 * struct ntb_dev_ops - ntb device operations
 * @port_number:	See ntb_port_number().
 * @peer_port_count:	See ntb_peer_port_count().
 * @peer_port_number:	See ntb_peer_port_number().
 * @peer_port_idx:	See ntb_peer_port_idx().
 * @link_is_up:		See ntb_link_is_up().
 * @link_enable:	See ntb_link_enable().
 * @link_disable:	See ntb_link_disable().
 * @mw_count:		See ntb_mw_count().
 * @mw_get_align:	See ntb_mw_get_align().
 * @mw_set_trans:	See ntb_mw_set_trans().
 * @mw_clear_trans:	See ntb_mw_clear_trans().
 * @peer_mw_count:	See ntb_peer_mw_count().
 * @peer_mw_get_addr:	See ntb_peer_mw_get_addr().
 * @peer_mw_set_trans:	See ntb_peer_mw_set_trans().
 * @peer_mw_clear_trans:See ntb_peer_mw_clear_trans().
 * @db_is_unsafe:	See ntb_db_is_unsafe().
 * @db_valid_mask:	See ntb_db_valid_mask().
 * @db_vector_count:	See ntb_db_vector_count().
 * @db_vector_mask:	See ntb_db_vector_mask().
 * @db_read:		See ntb_db_read().
 * @db_set:		See ntb_db_set().
 * @db_clear:		See ntb_db_clear().
 * @db_read_mask:	See ntb_db_read_mask().
 * @db_set_mask:	See ntb_db_set_mask().
 * @db_clear_mask:	See ntb_db_clear_mask().
 * @peer_db_addr:	See ntb_peer_db_addr().
 * @peer_db_read:	See ntb_peer_db_read().
 * @peer_db_set:	See ntb_peer_db_set().
 * @peer_db_clear:	See ntb_peer_db_clear().
 * @peer_db_read_mask:	See ntb_peer_db_read_mask().
 * @peer_db_set_mask:	See ntb_peer_db_set_mask().
 * @peer_db_clear_mask:	See ntb_peer_db_clear_mask().
 * @spad_is_unsafe:	See ntb_spad_is_unsafe().
 * @spad_count:		See ntb_spad_count().
 * @spad_read:		See ntb_spad_read().
 * @spad_write:		See ntb_spad_write().
 * @peer_spad_addr:	See ntb_peer_spad_addr().
 * @peer_spad_read:	See ntb_peer_spad_read().
 * @peer_spad_write:	See ntb_peer_spad_write().
 * @msg_count:		See ntb_msg_count().
 * @msg_inbits:		See ntb_msg_inbits().
 * @msg_outbits:	See ntb_msg_outbits().
 * @msg_read_sts:	See ntb_msg_read_sts().
 * @msg_clear_sts:	See ntb_msg_clear_sts().
 * @msg_set_mask:	See ntb_msg_set_mask().
 * @msg_clear_mask:	See ntb_msg_clear_mask().
 * @msg_read:		See ntb_msg_read().
 * @peer_msg_write:	See ntb_peer_msg_write().
 */
struct ntb_dev_ops {
	int (*port_number)(struct ntb_dev *ntb);
	int (*peer_port_count)(struct ntb_dev *ntb);
	int (*peer_port_number)(struct ntb_dev *ntb, int pidx);
	int (*peer_port_idx)(struct ntb_dev *ntb, int port);

	u64 (*link_is_up)(struct ntb_dev *ntb,
			  enum ntb_speed *speed, enum ntb_width *width);
	int (*link_enable)(struct ntb_dev *ntb,
			   enum ntb_speed max_speed, enum ntb_width max_width);
	int (*link_disable)(struct ntb_dev *ntb);

	int (*mw_count)(struct ntb_dev *ntb, int pidx);
	int (*mw_get_align)(struct ntb_dev *ntb, int pidx, int widx,
			    resource_size_t *addr_align,
			    resource_size_t *size_align,
			    resource_size_t *size_max);
	int (*mw_set_trans)(struct ntb_dev *ntb, int pidx, int widx,
			    dma_addr_t addr, resource_size_t size);
	int (*mw_clear_trans)(struct ntb_dev *ntb, int pidx, int widx);
	int (*peer_mw_count)(struct ntb_dev *ntb);
	int (*peer_mw_get_addr)(struct ntb_dev *ntb, int widx,
				phys_addr_t *base, resource_size_t *size);
	int (*peer_mw_set_trans)(struct ntb_dev *ntb, int pidx, int widx,
				 u64 addr, resource_size_t size);
	int (*peer_mw_clear_trans)(struct ntb_dev *ntb, int pidx, int widx);

	int (*db_is_unsafe)(struct ntb_dev *ntb);
	u64 (*db_valid_mask)(struct ntb_dev *ntb);
	int (*db_vector_count)(struct ntb_dev *ntb);
	u64 (*db_vector_mask)(struct ntb_dev *ntb, int db_vector);

	u64 (*db_read)(struct ntb_dev *ntb);
	int (*db_set)(struct ntb_dev *ntb, u64 db_bits);
	int (*db_clear)(struct ntb_dev *ntb, u64 db_bits);

	u64 (*db_read_mask)(struct ntb_dev *ntb);
	int (*db_set_mask)(struct ntb_dev *ntb, u64 db_bits);
	int (*db_clear_mask)(struct ntb_dev *ntb, u64 db_bits);

	int (*peer_db_addr)(struct ntb_dev *ntb,
			    phys_addr_t *db_addr, resource_size_t *db_size,
				u64 *db_data, int db_bit);
	u64 (*peer_db_read)(struct ntb_dev *ntb);
	int (*peer_db_set)(struct ntb_dev *ntb, u64 db_bits);
	int (*peer_db_clear)(struct ntb_dev *ntb, u64 db_bits);

	u64 (*peer_db_read_mask)(struct ntb_dev *ntb);
	int (*peer_db_set_mask)(struct ntb_dev *ntb, u64 db_bits);
	int (*peer_db_clear_mask)(struct ntb_dev *ntb, u64 db_bits);

	int (*spad_is_unsafe)(struct ntb_dev *ntb);
	int (*spad_count)(struct ntb_dev *ntb);

	u32 (*spad_read)(struct ntb_dev *ntb, int sidx);
	int (*spad_write)(struct ntb_dev *ntb, int sidx, u32 val);

	int (*peer_spad_addr)(struct ntb_dev *ntb, int pidx, int sidx,
			      phys_addr_t *spad_addr);
	u32 (*peer_spad_read)(struct ntb_dev *ntb, int pidx, int sidx);
	int (*peer_spad_write)(struct ntb_dev *ntb, int pidx, int sidx,
			       u32 val);

	int (*msg_count)(struct ntb_dev *ntb);
	u64 (*msg_inbits)(struct ntb_dev *ntb);
	u64 (*msg_outbits)(struct ntb_dev *ntb);
	u64 (*msg_read_sts)(struct ntb_dev *ntb);
	int (*msg_clear_sts)(struct ntb_dev *ntb, u64 sts_bits);
	int (*msg_set_mask)(struct ntb_dev *ntb, u64 mask_bits);
	int (*msg_clear_mask)(struct ntb_dev *ntb, u64 mask_bits);
	u32 (*msg_read)(struct ntb_dev *ntb, int *pidx, int midx);
	int (*peer_msg_write)(struct ntb_dev *ntb, int pidx, int midx, u32 msg);
};

static inline int ntb_dev_ops_is_valid(const struct ntb_dev_ops *ops)
{
	/* commented callbacks are not required: */
	return
		/* Port operations are required for multiport devices */
		!ops->peer_port_count == !ops->port_number	&&
		!ops->peer_port_number == !ops->port_number	&&
		!ops->peer_port_idx == !ops->port_number	&&

		/* Link operations are required */
		ops->link_is_up				&&
		ops->link_enable			&&
		ops->link_disable			&&

		/* One or both MW interfaces should be developed */
		ops->mw_count				&&
		ops->mw_get_align			&&
		(ops->mw_set_trans			||
		 ops->peer_mw_set_trans)		&&
		/* ops->mw_clear_trans			&& */
		ops->peer_mw_count			&&
		ops->peer_mw_get_addr			&&
		/* ops->peer_mw_clear_trans		&& */

		/* Doorbell operations are mostly required */
		/* ops->db_is_unsafe			&& */
		ops->db_valid_mask			&&
		/* both set, or both unset */
		(!ops->db_vector_count == !ops->db_vector_mask)	&&
		ops->db_read				&&
		/* ops->db_set				&& */
		ops->db_clear				&&
		/* ops->db_read_mask			&& */
		ops->db_set_mask			&&
		ops->db_clear_mask			&&
		/* ops->peer_db_addr			&& */
		/* ops->peer_db_read			&& */
		ops->peer_db_set			&&
		/* ops->peer_db_clear			&& */
		/* ops->peer_db_read_mask		&& */
		/* ops->peer_db_set_mask		&& */
		/* ops->peer_db_clear_mask		&& */

		/* Scrachpads interface is optional */
		/* !ops->spad_is_unsafe == !ops->spad_count	&& */
		!ops->spad_read == !ops->spad_count		&&
		!ops->spad_write == !ops->spad_count		&&
		/* !ops->peer_spad_addr == !ops->spad_count	&& */
		/* !ops->peer_spad_read == !ops->spad_count	&& */
		!ops->peer_spad_write == !ops->spad_count	&&

		/* Messaging interface is optional */
		!ops->msg_inbits == !ops->msg_count		&&
		!ops->msg_outbits == !ops->msg_count		&&
		!ops->msg_read_sts == !ops->msg_count		&&
		!ops->msg_clear_sts == !ops->msg_count		&&
		/* !ops->msg_set_mask == !ops->msg_count	&& */
		/* !ops->msg_clear_mask == !ops->msg_count	&& */
		!ops->msg_read == !ops->msg_count		&&
		!ops->peer_msg_write == !ops->msg_count		&&
		1;
}

/**
 * struct ntb_client - client interested in ntb devices
 * @drv:		Linux driver object.
 * @ops:		See &ntb_client_ops.
 */
struct ntb_client {
	struct device_driver		drv;
	const struct ntb_client_ops	ops;
};
#define drv_ntb_client(__drv) container_of((__drv), struct ntb_client, drv)

/**
 * struct ntb_dev - ntb device
 * @dev:		Linux device object.
 * @pdev:		PCI device entry of the ntb.
 * @topo:		Detected topology of the ntb.
 * @ops:		See &ntb_dev_ops.
 * @ctx:		See &ntb_ctx_ops.
 * @ctx_ops:		See &ntb_ctx_ops.
 */
struct ntb_dev {
	struct device			dev;
	struct pci_dev			*pdev;
	enum ntb_topo			topo;
	const struct ntb_dev_ops	*ops;
	void				*ctx;
	const struct ntb_ctx_ops	*ctx_ops;

	/* private: */

	/* synchronize setting, clearing, and calling ctx_ops */
	spinlock_t			ctx_lock;
	/* block unregister until device is fully released */
	struct completion		released;

#ifdef CONFIG_NTB_MSI
	struct ntb_msi *msi;
#endif
};
#define dev_ntb(__dev) container_of((__dev), struct ntb_dev, dev)

/**
 * ntb_register_client() - register a client for interest in ntb devices
 * @client:	Client context.
 *
 * The client will be added to the list of clients interested in ntb devices.
 * The client will be notified of any ntb devices that are not already
 * associated with a client, or if ntb devices are registered later.
 *
 * Return: Zero if the client is registered, otherwise an error number.
 */
#define ntb_register_client(client) \
	__ntb_register_client((client), THIS_MODULE, KBUILD_MODNAME)

int __ntb_register_client(struct ntb_client *client, struct module *mod,
			  const char *mod_name);

/**
 * ntb_unregister_client() - unregister a client for interest in ntb devices
 * @client:	Client context.
 *
 * The client will be removed from the list of clients interested in ntb
 * devices.  If any ntb devices are associated with the client, the client will
 * be notified to remove those devices.
 */
void ntb_unregister_client(struct ntb_client *client);

#define module_ntb_client(__ntb_client) \
	module_driver(__ntb_client, ntb_register_client, \
			ntb_unregister_client)

/**
 * ntb_register_device() - register a ntb device
 * @ntb:	NTB device context.
 *
 * The device will be added to the list of ntb devices.  If any clients are
 * interested in ntb devices, each client will be notified of the ntb device,
 * until at most one client accepts the device.
 *
 * Return: Zero if the device is registered, otherwise an error number.
 */
int ntb_register_device(struct ntb_dev *ntb);

/**
 * ntb_unregister_device() - unregister a ntb device
 * @ntb:	NTB device context.
 *
 * The device will be removed from the list of ntb devices.  If the ntb device
 * is associated with a client, the client will be notified to remove the
 * device.
 */
void ntb_unregister_device(struct ntb_dev *ntb);

/**
 * ntb_set_ctx() - associate a driver context with an ntb device
 * @ntb:	NTB device context.
 * @ctx:	Driver context.
 * @ctx_ops:	Driver context operations.
 *
 * Associate a driver context and operations with a ntb device.  The context is
 * provided by the client driver, and the driver may associate a different
 * context with each ntb device.
 *
 * Return: Zero if the context is associated, otherwise an error number.
 */
int ntb_set_ctx(struct ntb_dev *ntb, void *ctx,
		const struct ntb_ctx_ops *ctx_ops);

/**
 * ntb_clear_ctx() - disassociate any driver context from an ntb device
 * @ntb:	NTB device context.
 *
 * Clear any association that may exist between a driver context and the ntb
 * device.
 */
void ntb_clear_ctx(struct ntb_dev *ntb);

/**
 * ntb_link_event() - notify driver context of a change in link status
 * @ntb:	NTB device context.
 *
 * Notify the driver context that the link status may have changed.  The driver
 * should call ntb_link_is_up() to get the current status.
 */
void ntb_link_event(struct ntb_dev *ntb);

/**
 * ntb_db_event() - notify driver context of a doorbell event
 * @ntb:	NTB device context.
 * @vector:	Interrupt vector number.
 *
 * Notify the driver context of a doorbell event.  If hardware supports
 * multiple interrupt vectors for doorbells, the vector number indicates which
 * vector received the interrupt.  The vector number is relative to the first
 * vector used for doorbells, starting at zero, and must be less than
 * ntb_db_vector_count().  The driver may call ntb_db_read() to check which
 * doorbell bits need service, and ntb_db_vector_mask() to determine which of
 * those bits are associated with the vector number.
 */
void ntb_db_event(struct ntb_dev *ntb, int vector);

/**
 * ntb_msg_event() - notify driver context of a message event
 * @ntb:	NTB device context.
 *
 * Notify the driver context of a message event.  If hardware supports
 * message registers, this event indicates, that a new message arrived in
 * some incoming message register or last sent message couldn't be delivered.
 * The events can be masked/unmasked by the methods ntb_msg_set_mask() and
 * ntb_msg_clear_mask().
 */
void ntb_msg_event(struct ntb_dev *ntb);

/**
 * ntb_default_port_number() - get the default local port number
 * @ntb:	NTB device context.
 *
 * If hardware driver doesn't specify port_number() callback method, the NTB
 * is considered with just two ports. So this method returns default local
 * port number in compliance with topology.
 *
 * NOTE Don't call this method directly. The ntb_port_number() function should
 * be used instead.
 *
 * Return: the default local port number
 */
int ntb_default_port_number(struct ntb_dev *ntb);

/**
 * ntb_default_port_count() - get the default number of peer device ports
 * @ntb:	NTB device context.
 *
 * By default hardware driver supports just one peer device.
 *
 * NOTE Don't call this method directly. The ntb_peer_port_count() function
 * should be used instead.
 *
 * Return: the default number of peer ports
 */
int ntb_default_peer_port_count(struct ntb_dev *ntb);

/**
 * ntb_default_peer_port_number() - get the default peer port by given index
 * @ntb:	NTB device context.
 * @idx:	Peer port index (should not differ from zero).
 *
 * By default hardware driver supports just one peer device, so this method
 * shall return the corresponding value from enum ntb_default_port.
 *
 * NOTE Don't call this method directly. The ntb_peer_port_number() function
 * should be used instead.
 *
 * Return: the peer device port or negative value indicating an error
 */
int ntb_default_peer_port_number(struct ntb_dev *ntb, int pidx);

/**
 * ntb_default_peer_port_idx() - get the default peer device port index by
 *				 given port number
 * @ntb:	NTB device context.
 * @port:	Peer port number (should be one of enum ntb_default_port).
 *
 * By default hardware driver supports just one peer device, so while
 * specified port-argument indicates peer port from enum ntb_default_port,
 * the return value shall be zero.
 *
 * NOTE Don't call this method directly. The ntb_peer_port_idx() function
 * should be used instead.
 *
 * Return: the peer port index or negative value indicating an error
 */
int ntb_default_peer_port_idx(struct ntb_dev *ntb, int port);

/**
 * ntb_port_number() - get the local port number
 * @ntb:	NTB device context.
 *
 * Hardware must support at least simple two-ports ntb connection
 *
 * Return: the local port number
 */
static inline int ntb_port_number(struct ntb_dev *ntb)
{
	if (!ntb->ops->port_number)
		return ntb_default_port_number(ntb);

	return ntb->ops->port_number(ntb);
}
/**
 * ntb_peer_port_count() - get the number of peer device ports
 * @ntb:	NTB device context.
 *
 * Hardware may support an access to memory of several remote domains
 * over multi-port NTB devices. This method returns the number of peers,
 * local device can have shared memory with.
 *
 * Return: the number of peer ports
 */
static inline int ntb_peer_port_count(struct ntb_dev *ntb)
{
	if (!ntb->ops->peer_port_count)
		return ntb_default_peer_port_count(ntb);

	return ntb->ops->peer_port_count(ntb);
}

/**
 * ntb_peer_port_number() - get the peer port by given index
 * @ntb:	NTB device context.
 * @pidx:	Peer port index.
 *
 * Peer ports are continuously enumerated by NTB API logic, so this method
 * lets to retrieve port real number by its index.
 *
 * Return: the peer device port or negative value indicating an error
 */
static inline int ntb_peer_port_number(struct ntb_dev *ntb, int pidx)
{
	if (!ntb->ops->peer_port_number)
		return ntb_default_peer_port_number(ntb, pidx);

	return ntb->ops->peer_port_number(ntb, pidx);
}

/**
 * ntb_logical_port_number() - get the logical port number of the local port
 * @ntb:	NTB device context.
 *
 * The Logical Port Number is defined to be a unique number for each
 * port starting from zero through to the number of ports minus one.
 * This is in contrast to the Port Number where each port can be assigned
 * any unique physical number by the hardware.
 *
 * The logical port number is useful for calculating the resource indexes
 * used by peers.
 *
 * Return: the logical port number or negative value indicating an error
 */
static inline int ntb_logical_port_number(struct ntb_dev *ntb)
{
	int lport = ntb_port_number(ntb);
	int pidx;

	if (lport < 0)
		return lport;

	for (pidx = 0; pidx < ntb_peer_port_count(ntb); pidx++)
		if (lport <= ntb_peer_port_number(ntb, pidx))
			return pidx;

	return pidx;
}

/**
 * ntb_peer_logical_port_number() - get the logical peer port by given index
 * @ntb:	NTB device context.
 * @pidx:	Peer port index.
 *
 * The Logical Port Number is defined to be a unique number for each
 * port starting from zero through to the number of ports minus one.
 * This is in contrast to the Port Number where each port can be assigned
 * any unique physical number by the hardware.
 *
 * The logical port number is useful for calculating the resource indexes
 * used by peers.
 *
 * Return: the peer's logical port number or negative value indicating an error
 */
static inline int ntb_peer_logical_port_number(struct ntb_dev *ntb, int pidx)
{
	if (ntb_peer_port_number(ntb, pidx) < ntb_port_number(ntb))
		return pidx;
	else
		return pidx + 1;
}

/**
 * ntb_peer_port_idx() - get the peer device port index by given port number
 * @ntb:	NTB device context.
 * @port:	Peer port number.
 *
 * Inverse operation of ntb_peer_port_number(), so one can get port index
 * by specified port number.
 *
 * Return: the peer port index or negative value indicating an error
 */
static inline int ntb_peer_port_idx(struct ntb_dev *ntb, int port)
{
	if (!ntb->ops->peer_port_idx)
		return ntb_default_peer_port_idx(ntb, port);

	return ntb->ops->peer_port_idx(ntb, port);
}

/**
 * ntb_link_is_up() - get the current ntb link state
 * @ntb:	NTB device context.
 * @speed:	OUT - The link speed expressed as PCIe generation number.
 * @width:	OUT - The link width expressed as the number of PCIe lanes.
 *
 * Get the current state of the ntb link.  It is recommended to query the link
 * state once after every link event.  It is safe to query the link state in
 * the context of the link event callback.
 *
 * Return: bitfield of indexed ports link state: bit is set/cleared if the
 *         link is up/down respectively.
 */
static inline u64 ntb_link_is_up(struct ntb_dev *ntb,
				 enum ntb_speed *speed, enum ntb_width *width)
{
	return ntb->ops->link_is_up(ntb, speed, width);
}

/**
 * ntb_link_enable() - enable the local port ntb connection
 * @ntb:	NTB device context.
 * @max_speed:	The maximum link speed expressed as PCIe generation number.
 * @max_width:	The maximum link width expressed as the number of PCIe lanes.
 *
 * Enable the NTB/PCIe link on the local or remote (for bridge-to-bridge
 * topology) side of the bridge. If it's supported the ntb device should train
 * the link to its maximum speed and width, or the requested speed and width,
 * whichever is smaller. Some hardware doesn't support PCIe link training, so
 * the last two arguments will be ignored then.
 *
 * Return: Zero on success, otherwise an error number.
 */
static inline int ntb_link_enable(struct ntb_dev *ntb,
				  enum ntb_speed max_speed,
				  enum ntb_width max_width)
{
	return ntb->ops->link_enable(ntb, max_speed, max_width);
}

/**
 * ntb_link_disable() - disable the local port ntb connection
 * @ntb:	NTB device context.
 *
 * Disable the link on the local or remote (for b2b topology) of the ntb.
 * The ntb device should disable the link.  Returning from this call must
 * indicate that a barrier has passed, though with no more writes may pass in
 * either direction across the link, except if this call returns an error
 * number.
 *
 * Return: Zero on success, otherwise an error number.
 */
static inline int ntb_link_disable(struct ntb_dev *ntb)
{
	return ntb->ops->link_disable(ntb);
}

/**
 * ntb_mw_count() - get the number of inbound memory windows, which could
 *                  be created for a specified peer device
 * @ntb:	NTB device context.
 * @pidx:	Port index of peer device.
 *
 * Hardware and topology may support a different number of memory windows.
 * Moreover different peer devices can support different number of memory
 * windows. Simply speaking this method returns the number of possible inbound
 * memory windows to share with specified peer device. Note: this may return
 * zero if the link is not up yet.
 *
 * Return: the number of memory windows.
 */
static inline int ntb_mw_count(struct ntb_dev *ntb, int pidx)
{
	return ntb->ops->mw_count(ntb, pidx);
}

/**
 * ntb_mw_get_align() - get the restriction parameters of inbound memory window
 * @ntb:	NTB device context.
 * @pidx:	Port index of peer device.
 * @widx:	Memory window index.
 * @addr_align:	OUT - the base alignment for translating the memory window
 * @size_align:	OUT - the size alignment for translating the memory window
 * @size_max:	OUT - the maximum size of the memory window
 *
 * Get the alignments of an inbound memory window with specified index.
 * NULL may be given for any output parameter if the value is not needed.
 * The alignment and size parameters may be used for allocation of proper
 * shared memory. Note: this must only be called when the link is up.
 *
 * Return: Zero on success, otherwise a negative error number.
 */
static inline int ntb_mw_get_align(struct ntb_dev *ntb, int pidx, int widx,
				   resource_size_t *addr_align,
				   resource_size_t *size_align,
				   resource_size_t *size_max)
{
	if (!(ntb_link_is_up(ntb, NULL, NULL) & BIT_ULL(pidx)))
		return -ENOTCONN;

	return ntb->ops->mw_get_align(ntb, pidx, widx, addr_align, size_align,
				      size_max);
}

/**
 * ntb_mw_set_trans() - set the translation of an inbound memory window
 * @ntb:	NTB device context.
 * @pidx:	Port index of peer device.
 * @widx:	Memory window index.
 * @addr:	The dma address of local memory to expose to the peer.
 * @size:	The size of the local memory to expose to the peer.
 *
 * Set the translation of a memory window.  The peer may access local memory
 * through the window starting at the address, up to the size.  The address
 * and size must be aligned in compliance with restrictions of
 * ntb_mw_get_align(). The region size should not exceed the size_max parameter
 * of that method.
 *
 * This method may not be implemented due to the hardware specific memory
 * windows interface.
 *
 * Return: Zero on success, otherwise an error number.
 */
static inline int ntb_mw_set_trans(struct ntb_dev *ntb, int pidx, int widx,
				   dma_addr_t addr, resource_size_t size)
{
	if (!ntb->ops->mw_set_trans)
		return 0;

	return ntb->ops->mw_set_trans(ntb, pidx, widx, addr, size);
}

/**
 * ntb_mw_clear_trans() - clear the translation address of an inbound memory
 *                        window
 * @ntb:	NTB device context.
 * @pidx:	Port index of peer device.
 * @widx:	Memory window index.
 *
 * Clear the translation of an inbound memory window.  The peer may no longer
 * access local memory through the window.
 *
 * Return: Zero on success, otherwise an error number.
 */
static inline int ntb_mw_clear_trans(struct ntb_dev *ntb, int pidx, int widx)
{
	if (!ntb->ops->mw_clear_trans)
		return ntb_mw_set_trans(ntb, pidx, widx, 0, 0);

	return ntb->ops->mw_clear_trans(ntb, pidx, widx);
}

/**
 * ntb_peer_mw_count() - get the number of outbound memory windows, which could
 *                       be mapped to access a shared memory
 * @ntb:	NTB device context.
 *
 * Hardware and topology may support a different number of memory windows.
 * This method returns the number of outbound memory windows supported by
 * local device.
 *
 * Return: the number of memory windows.
 */
static inline int ntb_peer_mw_count(struct ntb_dev *ntb)
{
	return ntb->ops->peer_mw_count(ntb);
}

/**
 * ntb_peer_mw_get_addr() - get map address of an outbound memory window
 * @ntb:	NTB device context.
 * @widx:	Memory window index (within ntb_peer_mw_count() return value).
 * @base:	OUT - the base address of mapping region.
 * @size:	OUT - the size of mapping region.
 *
 * Get base and size of memory region to map.  NULL may be given for any output
 * parameter if the value is not needed.  The base and size may be used for
 * mapping the memory window, to access the peer memory.
 *
 * Return: Zero on success, otherwise a negative error number.
 */
static inline int ntb_peer_mw_get_addr(struct ntb_dev *ntb, int widx,
				      phys_addr_t *base, resource_size_t *size)
{
	return ntb->ops->peer_mw_get_addr(ntb, widx, base, size);
}

/**
 * ntb_peer_mw_set_trans() - set a translation address of a memory window
 *                           retrieved from a peer device
 * @ntb:	NTB device context.
 * @pidx:	Port index of peer device the translation address received from.
 * @widx:	Memory window index.
 * @addr:	The dma address of the shared memory to access.
 * @size:	The size of the shared memory to access.
 *
 * Set the translation of an outbound memory window.  The local device may
 * access shared memory allocated by a peer device sent the address.
 *
 * This method may not be implemented due to the hardware specific memory
 * windows interface, so a translation address can be only set on the side,
 * where shared memory (inbound memory windows) is allocated.
 *
 * Return: Zero on success, otherwise an error number.
 */
static inline int ntb_peer_mw_set_trans(struct ntb_dev *ntb, int pidx, int widx,
					u64 addr, resource_size_t size)
{
	if (!ntb->ops->peer_mw_set_trans)
		return 0;

	return ntb->ops->peer_mw_set_trans(ntb, pidx, widx, addr, size);
}

/**
 * ntb_peer_mw_clear_trans() - clear the translation address of an outbound
 *                             memory window
 * @ntb:	NTB device context.
 * @pidx:	Port index of peer device.
 * @widx:	Memory window index.
 *
 * Clear the translation of a outbound memory window.  The local device may no
 * longer access a shared memory through the window.
 *
 * This method may not be implemented due to the hardware specific memory
 * windows interface.
 *
 * Return: Zero on success, otherwise an error number.
 */
static inline int ntb_peer_mw_clear_trans(struct ntb_dev *ntb, int pidx,
					  int widx)
{
	if (!ntb->ops->peer_mw_clear_trans)
		return ntb_peer_mw_set_trans(ntb, pidx, widx, 0, 0);

	return ntb->ops->peer_mw_clear_trans(ntb, pidx, widx);
}

/**
 * ntb_db_is_unsafe() - check if it is safe to use hardware doorbell
 * @ntb:	NTB device context.
 *
 * It is possible for some ntb hardware to be affected by errata.  Hardware
 * drivers can advise clients to avoid using doorbells.  Clients may ignore
 * this advice, though caution is recommended.
 *
 * Return: Zero if it is safe to use doorbells, or One if it is not safe.
 */
static inline int ntb_db_is_unsafe(struct ntb_dev *ntb)
{
	if (!ntb->ops->db_is_unsafe)
		return 0;

	return ntb->ops->db_is_unsafe(ntb);
}

/**
 * ntb_db_valid_mask() - get a mask of doorbell bits supported by the ntb
 * @ntb:	NTB device context.
 *
 * Hardware may support different number or arrangement of doorbell bits.
 *
 * Return: A mask of doorbell bits supported by the ntb.
 */
static inline u64 ntb_db_valid_mask(struct ntb_dev *ntb)
{
	return ntb->ops->db_valid_mask(ntb);
}

/**
 * ntb_db_vector_count() - get the number of doorbell interrupt vectors
 * @ntb:	NTB device context.
 *
 * Hardware may support different number of interrupt vectors.
 *
 * Return: The number of doorbell interrupt vectors.
 */
static inline int ntb_db_vector_count(struct ntb_dev *ntb)
{
	if (!ntb->ops->db_vector_count)
		return 1;

	return ntb->ops->db_vector_count(ntb);
}

/**
 * ntb_db_vector_mask() - get a mask of doorbell bits serviced by a vector
 * @ntb:	NTB device context.
 * @vector:	Doorbell vector number.
 *
 * Each interrupt vector may have a different number or arrangement of bits.
 *
 * Return: A mask of doorbell bits serviced by a vector.
 */
static inline u64 ntb_db_vector_mask(struct ntb_dev *ntb, int vector)
{
	if (!ntb->ops->db_vector_mask)
		return ntb_db_valid_mask(ntb);

	return ntb->ops->db_vector_mask(ntb, vector);
}

/**
 * ntb_db_read() - read the local doorbell register
 * @ntb:	NTB device context.
 *
 * Read the local doorbell register, and return the bits that are set.
 *
 * Return: The bits currently set in the local doorbell register.
 */
static inline u64 ntb_db_read(struct ntb_dev *ntb)
{
	return ntb->ops->db_read(ntb);
}

/**
 * ntb_db_set() - set bits in the local doorbell register
 * @ntb:	NTB device context.
 * @db_bits:	Doorbell bits to set.
 *
 * Set bits in the local doorbell register, which may generate a local doorbell
 * interrupt.  Bits that were already set must remain set.
 *
 * This is unusual, and hardware may not support it.
 *
 * Return: Zero on success, otherwise an error number.
 */
static inline int ntb_db_set(struct ntb_dev *ntb, u64 db_bits)
{
	if (!ntb->ops->db_set)
		return -EINVAL;

	return ntb->ops->db_set(ntb, db_bits);
}

/**
 * ntb_db_clear() - clear bits in the local doorbell register
 * @ntb:	NTB device context.
 * @db_bits:	Doorbell bits to clear.
 *
 * Clear bits in the local doorbell register, arming the bits for the next
 * doorbell.
 *
 * Return: Zero on success, otherwise an error number.
 */
static inline int ntb_db_clear(struct ntb_dev *ntb, u64 db_bits)
{
	return ntb->ops->db_clear(ntb, db_bits);
}

/**
 * ntb_db_read_mask() - read the local doorbell mask
 * @ntb:	NTB device context.
 *
 * Read the local doorbell mask register, and return the bits that are set.
 *
 * This is unusual, though hardware is likely to support it.
 *
 * Return: The bits currently set in the local doorbell mask register.
 */
static inline u64 ntb_db_read_mask(struct ntb_dev *ntb)
{
	if (!ntb->ops->db_read_mask)
		return 0;

	return ntb->ops->db_read_mask(ntb);
}

/**
 * ntb_db_set_mask() - set bits in the local doorbell mask
 * @ntb:	NTB device context.
 * @db_bits:	Doorbell mask bits to set.
 *
 * Set bits in the local doorbell mask register, preventing doorbell interrupts
 * from being generated for those doorbell bits.  Bits that were already set
 * must remain set.
 *
 * Return: Zero on success, otherwise an error number.
 */
static inline int ntb_db_set_mask(struct ntb_dev *ntb, u64 db_bits)
{
	return ntb->ops->db_set_mask(ntb, db_bits);
}

/**
 * ntb_db_clear_mask() - clear bits in the local doorbell mask
 * @ntb:	NTB device context.
 * @db_bits:	Doorbell bits to clear.
 *
 * Clear bits in the local doorbell mask register, allowing doorbell interrupts
 * from being generated for those doorbell bits.  If a doorbell bit is already
 * set at the time the mask is cleared, and the corresponding mask bit is
 * changed from set to clear, then the ntb driver must ensure that
 * ntb_db_event() is called.  If the hardware does not generate the interrupt
 * on clearing the mask bit, then the driver must call ntb_db_event() anyway.
 *
 * Return: Zero on success, otherwise an error number.
 */
static inline int ntb_db_clear_mask(struct ntb_dev *ntb, u64 db_bits)
{
	return ntb->ops->db_clear_mask(ntb, db_bits);
}

/**
 * ntb_peer_db_addr() - address and size of the peer doorbell register
 * @ntb:	NTB device context.
 * @db_addr:	OUT - The address of the peer doorbell register.
 * @db_size:	OUT - The number of bytes to write the peer doorbell register.
 * @db_data:	OUT - The data of peer doorbell register
 * @db_bit:		door bell bit number
 *
 * Return the address of the peer doorbell register.  This may be used, for
 * example, by drivers that offload memory copy operations to a dma engine.
 * The drivers may wish to ring the peer doorbell at the completion of memory
 * copy operations.  For efficiency, and to simplify ordering of operations
 * between the dma memory copies and the ringing doorbell, the driver may
 * append one additional dma memory copy with the doorbell register as the
 * destination, after the memory copy operations.
 *
 * Return: Zero on success, otherwise an error number.
 */
static inline int ntb_peer_db_addr(struct ntb_dev *ntb,
				   phys_addr_t *db_addr,
				   resource_size_t *db_size,
				   u64 *db_data, int db_bit)
{
	if (!ntb->ops->peer_db_addr)
		return -EINVAL;

	return ntb->ops->peer_db_addr(ntb, db_addr, db_size, db_data, db_bit);
}

/**
 * ntb_peer_db_read() - read the peer doorbell register
 * @ntb:	NTB device context.
 *
 * Read the peer doorbell register, and return the bits that are set.
 *
 * This is unusual, and hardware may not support it.
 *
 * Return: The bits currently set in the peer doorbell register.
 */
static inline u64 ntb_peer_db_read(struct ntb_dev *ntb)
{
	if (!ntb->ops->peer_db_read)
		return 0;

	return ntb->ops->peer_db_read(ntb);
}

/**
 * ntb_peer_db_set() - set bits in the peer doorbell register
 * @ntb:	NTB device context.
 * @db_bits:	Doorbell bits to set.
 *
 * Set bits in the peer doorbell register, which may generate a peer doorbell
 * interrupt.  Bits that were already set must remain set.
 *
 * Return: Zero on success, otherwise an error number.
 */
static inline int ntb_peer_db_set(struct ntb_dev *ntb, u64 db_bits)
{
	return ntb->ops->peer_db_set(ntb, db_bits);
}

/**
 * ntb_peer_db_clear() - clear bits in the peer doorbell register
 * @ntb:	NTB device context.
 * @db_bits:	Doorbell bits to clear.
 *
 * Clear bits in the peer doorbell register, arming the bits for the next
 * doorbell.
 *
 * This is unusual, and hardware may not support it.
 *
 * Return: Zero on success, otherwise an error number.
 */
static inline int ntb_peer_db_clear(struct ntb_dev *ntb, u64 db_bits)
{
	if (!ntb->ops->db_clear)
		return -EINVAL;

	return ntb->ops->peer_db_clear(ntb, db_bits);
}

/**
 * ntb_peer_db_read_mask() - read the peer doorbell mask
 * @ntb:	NTB device context.
 *
 * Read the peer doorbell mask register, and return the bits that are set.
 *
 * This is unusual, and hardware may not support it.
 *
 * Return: The bits currently set in the peer doorbell mask register.
 */
static inline u64 ntb_peer_db_read_mask(struct ntb_dev *ntb)
{
	if (!ntb->ops->db_read_mask)
		return 0;

	return ntb->ops->peer_db_read_mask(ntb);
}

/**
 * ntb_peer_db_set_mask() - set bits in the peer doorbell mask
 * @ntb:	NTB device context.
 * @db_bits:	Doorbell mask bits to set.
 *
 * Set bits in the peer doorbell mask register, preventing doorbell interrupts
 * from being generated for those doorbell bits.  Bits that were already set
 * must remain set.
 *
 * This is unusual, and hardware may not support it.
 *
 * Return: Zero on success, otherwise an error number.
 */
static inline int ntb_peer_db_set_mask(struct ntb_dev *ntb, u64 db_bits)
{
	if (!ntb->ops->db_set_mask)
		return -EINVAL;

	return ntb->ops->peer_db_set_mask(ntb, db_bits);
}

/**
 * ntb_peer_db_clear_mask() - clear bits in the peer doorbell mask
 * @ntb:	NTB device context.
 * @db_bits:	Doorbell bits to clear.
 *
 * Clear bits in the peer doorbell mask register, allowing doorbell interrupts
 * from being generated for those doorbell bits.  If the hardware does not
 * generate the interrupt on clearing the mask bit, then the driver should not
 * implement this function!
 *
 * This is unusual, and hardware may not support it.
 *
 * Return: Zero on success, otherwise an error number.
 */
static inline int ntb_peer_db_clear_mask(struct ntb_dev *ntb, u64 db_bits)
{
	if (!ntb->ops->db_clear_mask)
		return -EINVAL;

	return ntb->ops->peer_db_clear_mask(ntb, db_bits);
}

/**
 * ntb_spad_is_unsafe() - check if it is safe to use the hardware scratchpads
 * @ntb:	NTB device context.
 *
 * It is possible for some ntb hardware to be affected by errata.  Hardware
 * drivers can advise clients to avoid using scratchpads.  Clients may ignore
 * this advice, though caution is recommended.
 *
 * Return: Zero if it is safe to use scratchpads, or One if it is not safe.
 */
static inline int ntb_spad_is_unsafe(struct ntb_dev *ntb)
{
	if (!ntb->ops->spad_is_unsafe)
		return 0;

	return ntb->ops->spad_is_unsafe(ntb);
}

/**
 * ntb_spad_count() - get the number of scratchpads
 * @ntb:	NTB device context.
 *
 * Hardware and topology may support a different number of scratchpads.
 * Although it must be the same for all ports per NTB device.
 *
 * Return: the number of scratchpads.
 */
static inline int ntb_spad_count(struct ntb_dev *ntb)
{
	if (!ntb->ops->spad_count)
		return 0;

	return ntb->ops->spad_count(ntb);
}

/**
 * ntb_spad_read() - read the local scratchpad register
 * @ntb:	NTB device context.
 * @sidx:	Scratchpad index.
 *
 * Read the local scratchpad register, and return the value.
 *
 * Return: The value of the local scratchpad register.
 */
static inline u32 ntb_spad_read(struct ntb_dev *ntb, int sidx)
{
	if (!ntb->ops->spad_read)
		return ~(u32)0;

	return ntb->ops->spad_read(ntb, sidx);
}

/**
 * ntb_spad_write() - write the local scratchpad register
 * @ntb:	NTB device context.
 * @sidx:	Scratchpad index.
 * @val:	Scratchpad value.
 *
 * Write the value to the local scratchpad register.
 *
 * Return: Zero on success, otherwise an error number.
 */
static inline int ntb_spad_write(struct ntb_dev *ntb, int sidx, u32 val)
{
	if (!ntb->ops->spad_write)
		return -EINVAL;

	return ntb->ops->spad_write(ntb, sidx, val);
}

/**
 * ntb_peer_spad_addr() - address of the peer scratchpad register
 * @ntb:	NTB device context.
 * @pidx:	Port index of peer device.
 * @sidx:	Scratchpad index.
 * @spad_addr:	OUT - The address of the peer scratchpad register.
 *
 * Return the address of the peer scratchpad register.  This may be used, for
 * example, by drivers that offload memory copy operations to a dma engine.
 *
 * Return: Zero on success, otherwise an error number.
 */
static inline int ntb_peer_spad_addr(struct ntb_dev *ntb, int pidx, int sidx,
				     phys_addr_t *spad_addr)
{
	if (!ntb->ops->peer_spad_addr)
		return -EINVAL;

	return ntb->ops->peer_spad_addr(ntb, pidx, sidx, spad_addr);
}

/**
 * ntb_peer_spad_read() - read the peer scratchpad register
 * @ntb:	NTB device context.
 * @pidx:	Port index of peer device.
 * @sidx:	Scratchpad index.
 *
 * Read the peer scratchpad register, and return the value.
 *
 * Return: The value of the peer scratchpad register.
 */
static inline u32 ntb_peer_spad_read(struct ntb_dev *ntb, int pidx, int sidx)
{
	if (!ntb->ops->peer_spad_read)
		return ~(u32)0;

	return ntb->ops->peer_spad_read(ntb, pidx, sidx);
}

/**
 * ntb_peer_spad_write() - write the peer scratchpad register
 * @ntb:	NTB device context.
 * @pidx:	Port index of peer device.
 * @sidx:	Scratchpad index.
 * @val:	Scratchpad value.
 *
 * Write the value to the peer scratchpad register.
 *
 * Return: Zero on success, otherwise an error number.
 */
static inline int ntb_peer_spad_write(struct ntb_dev *ntb, int pidx, int sidx,
				      u32 val)
{
	if (!ntb->ops->peer_spad_write)
		return -EINVAL;

	return ntb->ops->peer_spad_write(ntb, pidx, sidx, val);
}

/**
 * ntb_msg_count() - get the number of message registers
 * @ntb:	NTB device context.
 *
 * Hardware may support a different number of message registers.
 *
 * Return: the number of message registers.
 */
static inline int ntb_msg_count(struct ntb_dev *ntb)
{
	if (!ntb->ops->msg_count)
		return 0;

	return ntb->ops->msg_count(ntb);
}

/**
 * ntb_msg_inbits() - get a bitfield of inbound message registers status
 * @ntb:	NTB device context.
 *
 * The method returns the bitfield of status and mask registers, which related
 * to inbound message registers.
 *
 * Return: bitfield of inbound message registers.
 */
static inline u64 ntb_msg_inbits(struct ntb_dev *ntb)
{
	if (!ntb->ops->msg_inbits)
		return 0;

	return ntb->ops->msg_inbits(ntb);
}

/**
 * ntb_msg_outbits() - get a bitfield of outbound message registers status
 * @ntb:	NTB device context.
 *
 * The method returns the bitfield of status and mask registers, which related
 * to outbound message registers.
 *
 * Return: bitfield of outbound message registers.
 */
static inline u64 ntb_msg_outbits(struct ntb_dev *ntb)
{
	if (!ntb->ops->msg_outbits)
		return 0;

	return ntb->ops->msg_outbits(ntb);
}

/**
 * ntb_msg_read_sts() - read the message registers status
 * @ntb:	NTB device context.
 *
 * Read the status of message register. Inbound and outbound message registers
 * related bits can be filtered by masks retrieved from ntb_msg_inbits() and
 * ntb_msg_outbits().
 *
 * Return: status bits of message registers
 */
static inline u64 ntb_msg_read_sts(struct ntb_dev *ntb)
{
	if (!ntb->ops->msg_read_sts)
		return 0;

	return ntb->ops->msg_read_sts(ntb);
}

/**
 * ntb_msg_clear_sts() - clear status bits of message registers
 * @ntb:	NTB device context.
 * @sts_bits:	Status bits to clear.
 *
 * Clear bits in the status register.
 *
 * Return: Zero on success, otherwise a negative error number.
 */
static inline int ntb_msg_clear_sts(struct ntb_dev *ntb, u64 sts_bits)
{
	if (!ntb->ops->msg_clear_sts)
		return -EINVAL;

	return ntb->ops->msg_clear_sts(ntb, sts_bits);
}

/**
 * ntb_msg_set_mask() - set mask of message register status bits
 * @ntb:	NTB device context.
 * @mask_bits:	Mask bits.
 *
 * Mask the message registers status bits from raising the message event.
 *
 * Return: Zero on success, otherwise a negative error number.
 */
static inline int ntb_msg_set_mask(struct ntb_dev *ntb, u64 mask_bits)
{
	if (!ntb->ops->msg_set_mask)
		return -EINVAL;

	return ntb->ops->msg_set_mask(ntb, mask_bits);
}

/**
 * ntb_msg_clear_mask() - clear message registers mask
 * @ntb:	NTB device context.
 * @mask_bits:	Mask bits to clear.
 *
 * Clear bits in the message events mask register.
 *
 * Return: Zero on success, otherwise a negative error number.
 */
static inline int ntb_msg_clear_mask(struct ntb_dev *ntb, u64 mask_bits)
{
	if (!ntb->ops->msg_clear_mask)
		return -EINVAL;

	return ntb->ops->msg_clear_mask(ntb, mask_bits);
}

/**
 * ntb_msg_read() - read inbound message register with specified index
 * @ntb:	NTB device context.
 * @pidx:	OUT - Port index of peer device a message retrieved from
 * @midx:	Message register index
 *
 * Read data from the specified message register. Source port index of a
 * message is retrieved as well.
 *
 * Return: The value of the inbound message register.
 */
static inline u32 ntb_msg_read(struct ntb_dev *ntb, int *pidx, int midx)
{
	if (!ntb->ops->msg_read)
		return ~(u32)0;

	return ntb->ops->msg_read(ntb, pidx, midx);
}

/**
 * ntb_peer_msg_write() - write data to the specified peer message register
 * @ntb:	NTB device context.
 * @pidx:	Port index of peer device a message being sent to
 * @midx:	Message register index
 * @msg:	Data to send
 *
 * Send data to a specified peer device using the defined message register.
 * Message event can be raised if the midx registers isn't empty while
 * calling this method and the corresponding interrupt isn't masked.
 *
 * Return: Zero on success, otherwise a negative error number.
 */
static inline int ntb_peer_msg_write(struct ntb_dev *ntb, int pidx, int midx,
				     u32 msg)
{
	if (!ntb->ops->peer_msg_write)
		return -EINVAL;

	return ntb->ops->peer_msg_write(ntb, pidx, midx, msg);
}

/**
 * ntb_peer_resource_idx() - get a resource index for a given peer idx
 * @ntb:	NTB device context.
 * @pidx:	Peer port index.
 *
 * When constructing a graph of peers, each remote peer must use a different
 * resource index (mw, doorbell, etc) to communicate with each other
 * peer.
 *
 * In a two peer system, this function should always return 0 such that
 * resource 0 points to the remote peer on both ports.
 *
 * In a 5 peer system, this function will return the following matrix
 *
 * pidx \ port    0    1    2    3    4
 * 0              0    0    1    2    3
 * 1              0    1    1    2    3
 * 2              0    1    2    2    3
 * 3              0    1    2    3    3
 *
 * For example, if this function is used to program peer's memory
 * windows, port 0 will program MW 0 on all it's peers to point to itself.
 * port 1 will program MW 0 in port 0 to point to itself and MW 1 on all
 * other ports. etc.
 *
 * For the legacy two host case, ntb_port_number() and ntb_peer_port_number()
 * both return zero and therefore this function will always return zero.
 * So MW 0 on each host would be programmed to point to the other host.
 *
 * Return: the resource index to use for that peer.
 */
static inline int ntb_peer_resource_idx(struct ntb_dev *ntb, int pidx)
{
	int local_port, peer_port;

	if (pidx >= ntb_peer_port_count(ntb))
		return -EINVAL;

	local_port = ntb_logical_port_number(ntb);
	peer_port = ntb_peer_logical_port_number(ntb, pidx);

	if (peer_port < local_port)
		return local_port - 1;
	else
		return local_port;
}

/**
 * ntb_peer_highest_mw_idx() - get a memory window index for a given peer idx
 *	using the highest index memory windows first
 *
 * @ntb:	NTB device context.
 * @pidx:	Peer port index.
 *
 * Like ntb_peer_resource_idx(), except it returns indexes starting with
 * last memory window index.
 *
 * Return: the resource index to use for that peer.
 */
static inline int ntb_peer_highest_mw_idx(struct ntb_dev *ntb, int pidx)
{
	int ret;

	ret = ntb_peer_resource_idx(ntb, pidx);
	if (ret < 0)
		return ret;

	return ntb_mw_count(ntb, pidx) - ret - 1;
}

struct ntb_msi_desc {
	u32 addr_offset;
	u32 data;
};

#ifdef CONFIG_NTB_MSI

int ntb_msi_init(struct ntb_dev *ntb, void (*desc_changed)(void *ctx));
int ntb_msi_setup_mws(struct ntb_dev *ntb);
void ntb_msi_clear_mws(struct ntb_dev *ntb);
int ntbm_msi_request_threaded_irq(struct ntb_dev *ntb, irq_handler_t handler,
				  irq_handler_t thread_fn,
				  const char *name, void *dev_id,
				  struct ntb_msi_desc *msi_desc);
void ntbm_msi_free_irq(struct ntb_dev *ntb, unsigned int irq, void *dev_id);
int ntb_msi_peer_trigger(struct ntb_dev *ntb, int peer,
			 struct ntb_msi_desc *desc);
int ntb_msi_peer_addr(struct ntb_dev *ntb, int peer,
		      struct ntb_msi_desc *desc,
		      phys_addr_t *msi_addr);

#else /* not CONFIG_NTB_MSI */

static inline int ntb_msi_init(struct ntb_dev *ntb,
			       void (*desc_changed)(void *ctx))
{
	return -EOPNOTSUPP;
}
static inline int ntb_msi_setup_mws(struct ntb_dev *ntb)
{
	return -EOPNOTSUPP;
}
static inline void ntb_msi_clear_mws(struct ntb_dev *ntb) {}
static inline int ntbm_msi_request_threaded_irq(struct ntb_dev *ntb,
						irq_handler_t handler,
						irq_handler_t thread_fn,
						const char *name, void *dev_id,
						struct ntb_msi_desc *msi_desc)
{
	return -EOPNOTSUPP;
}
static inline void ntbm_msi_free_irq(struct ntb_dev *ntb, unsigned int irq,
				     void *dev_id) {}
static inline int ntb_msi_peer_trigger(struct ntb_dev *ntb, int peer,
				       struct ntb_msi_desc *desc)
{
	return -EOPNOTSUPP;
}
static inline int ntb_msi_peer_addr(struct ntb_dev *ntb, int peer,
				    struct ntb_msi_desc *desc,
				    phys_addr_t *msi_addr)
{
	return -EOPNOTSUPP;

}

#endif /* CONFIG_NTB_MSI */

static inline int ntbm_msi_request_irq(struct ntb_dev *ntb,
				       irq_handler_t handler,
				       const char *name, void *dev_id,
				       struct ntb_msi_desc *msi_desc)
{
	return ntbm_msi_request_threaded_irq(ntb, handler, NULL, name,
					     dev_id, msi_desc);
}

#endif

Youez - 2016 - github.com/yon3zu
LinuXploit