Hi Rasmus, First bad commit (maybe != root cause):
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: dcb7fd82c75ee2d6e6f9d8cc71c52519ed52e258 commit: 5a35435ef4e6e4bd2aabd6706b146b298a9cffe5 soc: fsl: qe: remove PPC32 dependency from CONFIG_QUICC_ENGINE date: 7 months ago config: arm64-randconfig-s032-20200706 (attached as .config) compiler: aarch64-linux-gcc (GCC) 9.3.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # apt-get install sparse # sparse version: v0.6.2-14-g8fce3d7a-dirty git checkout 5a35435ef4e6e4bd2aabd6706b146b298a9cffe5 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=arm64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <l...@intel.com> sparse warnings: (new ones prefixed by >>) >> drivers/net/wan/fsl_ucc_hdlc.c:305:17: sparse: sparse: incorrect type in >> argument 2 (different address spaces) @@ expected void volatile >> [noderef] <asn:2> *addr @@ got restricted __be16 * @@ >> drivers/net/wan/fsl_ucc_hdlc.c:305:17: sparse: expected void volatile >> [noderef] <asn:2> *addr drivers/net/wan/fsl_ucc_hdlc.c:305:17: sparse: got restricted __be16 * >> drivers/net/wan/fsl_ucc_hdlc.c:306:17: sparse: sparse: incorrect type in >> argument 2 (different address spaces) @@ expected void volatile >> [noderef] <asn:2> *addr @@ got restricted __be32 * @@ drivers/net/wan/fsl_ucc_hdlc.c:306:17: sparse: expected void volatile [noderef] <asn:2> *addr drivers/net/wan/fsl_ucc_hdlc.c:306:17: sparse: got restricted __be32 * drivers/net/wan/fsl_ucc_hdlc.c:316:17: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] <asn:2> *addr @@ got restricted __be16 * @@ drivers/net/wan/fsl_ucc_hdlc.c:316:17: sparse: expected void volatile [noderef] <asn:2> *addr drivers/net/wan/fsl_ucc_hdlc.c:316:17: sparse: got restricted __be16 * drivers/net/wan/fsl_ucc_hdlc.c:317:17: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] <asn:2> *addr @@ got restricted __be32 * @@ drivers/net/wan/fsl_ucc_hdlc.c:317:17: sparse: expected void volatile [noderef] <asn:2> *addr drivers/net/wan/fsl_ucc_hdlc.c:317:17: sparse: got restricted __be32 * >> drivers/net/wan/fsl_ucc_hdlc.c:368:29: sparse: sparse: incorrect type in >> assignment (different base types) @@ expected unsigned short [usertype] >> @@ got restricted __be16 [usertype] @@ drivers/net/wan/fsl_ucc_hdlc.c:368:29: sparse: expected unsigned short [usertype] drivers/net/wan/fsl_ucc_hdlc.c:368:29: sparse: got restricted __be16 [usertype] drivers/net/wan/fsl_ucc_hdlc.c:375:36: sparse: sparse: restricted __be16 degrades to integer >> drivers/net/wan/fsl_ucc_hdlc.c:398:12: sparse: sparse: incorrect type in >> assignment (different address spaces) @@ expected struct qe_bd [noderef] >> <asn:2> *bd @@ got struct qe_bd *curtx_bd @@ drivers/net/wan/fsl_ucc_hdlc.c:398:12: sparse: expected struct qe_bd [noderef] <asn:2> *bd drivers/net/wan/fsl_ucc_hdlc.c:398:12: sparse: got struct qe_bd *curtx_bd drivers/net/wan/fsl_ucc_hdlc.c:408:9: sparse: sparse: dereference of noderef expression >> drivers/net/wan/fsl_ucc_hdlc.c:421:20: sparse: sparse: incorrect type in >> assignment (different address spaces) @@ expected struct qe_bd [noderef] >> <asn:2> *[assigned] bd @@ got struct qe_bd *tx_bd_base @@ drivers/net/wan/fsl_ucc_hdlc.c:421:20: sparse: expected struct qe_bd [noderef] <asn:2> *[assigned] bd drivers/net/wan/fsl_ucc_hdlc.c:421:20: sparse: got struct qe_bd *tx_bd_base drivers/net/wan/fsl_ucc_hdlc.c:423:16: sparse: sparse: incompatible types in comparison expression (different address spaces): drivers/net/wan/fsl_ucc_hdlc.c:423:16: sparse: struct qe_bd [noderef] <asn:2> * drivers/net/wan/fsl_ucc_hdlc.c:423:16: sparse: struct qe_bd * >> drivers/net/wan/fsl_ucc_hdlc.c:458:21: sparse: sparse: incorrect type in >> argument 1 (different address spaces) @@ expected void const volatile >> [noderef] <asn:2> *addr @@ got restricted __be16 * @@ >> drivers/net/wan/fsl_ucc_hdlc.c:458:21: sparse: sparse: incorrect type in >> argument 1 (different address spaces) @@ expected void const volatile >> [noderef] <asn:2> *addr @@ got restricted __be16 * @@ >> drivers/net/wan/fsl_ucc_hdlc.c:458:21: sparse: sparse: incorrect type in >> argument 1 (different address spaces) @@ expected void const volatile >> [noderef] <asn:2> *addr @@ got restricted __be16 * @@ >> drivers/net/wan/fsl_ucc_hdlc.c:458:21: sparse: sparse: incorrect type in >> argument 1 (different address spaces) @@ expected void const volatile >> [noderef] <asn:2> *addr @@ got restricted __be16 * @@ drivers/net/wan/fsl_ucc_hdlc.c:502:29: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] <asn:2> *addr @@ got restricted __be16 * @@ drivers/net/wan/fsl_ucc_hdlc.c:502:29: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] <asn:2> *addr @@ got restricted __be16 * @@ drivers/net/wan/fsl_ucc_hdlc.c:502:29: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] <asn:2> *addr @@ got restricted __be16 * @@ drivers/net/wan/fsl_ucc_hdlc.c:502:29: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] <asn:2> *addr @@ got restricted __be16 * @@ drivers/net/wan/fsl_ucc_hdlc.c:524:21: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] <asn:2> *addr @@ got restricted __be16 * @@ drivers/net/wan/fsl_ucc_hdlc.c:524:21: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] <asn:2> *addr @@ got restricted __be16 * @@ drivers/net/wan/fsl_ucc_hdlc.c:524:21: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] <asn:2> *addr @@ got restricted __be16 * @@ drivers/net/wan/fsl_ucc_hdlc.c:524:21: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] <asn:2> *addr @@ got restricted __be16 * @@ drivers/net/wan/fsl_ucc_hdlc.c:548:26: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] <asn:2> *addr @@ got restricted __be16 * @@ drivers/net/wan/fsl_ucc_hdlc.c:548:26: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] <asn:2> *addr @@ got restricted __be16 * @@ drivers/net/wan/fsl_ucc_hdlc.c:548:26: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] <asn:2> *addr @@ got restricted __be16 * @@ drivers/net/wan/fsl_ucc_hdlc.c:548:26: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] <asn:2> *addr @@ got restricted __be16 * @@ drivers/net/wan/fsl_ucc_hdlc.c:592:17: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] <asn:2> *addr @@ got restricted __be16 * @@ drivers/net/wan/fsl_ucc_hdlc.c:607:29: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] <asn:2> *addr @@ got restricted __be16 * @@ drivers/net/wan/fsl_ucc_hdlc.c:607:29: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] <asn:2> *addr @@ got restricted __be16 * @@ drivers/net/wan/fsl_ucc_hdlc.c:607:29: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] <asn:2> *addr @@ got restricted __be16 * @@ drivers/net/wan/fsl_ucc_hdlc.c:607:29: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] <asn:2> *addr @@ got restricted __be16 * @@ >> drivers/net/wan/fsl_ucc_hdlc.c:852:38: sparse: sparse: incorrect type in >> initializer (different address spaces) @@ expected struct qe_mux >> *qe_mux_reg @@ got struct qe_mux [noderef] <asn:2> * @@ >> drivers/net/wan/fsl_ucc_hdlc.c:855:28: sparse: sparse: incorrect type in >> argument 1 (different address spaces) @@ expected void const volatile >> [noderef] <asn:2> *addr @@ got restricted __be32 * @@ >> drivers/net/wan/fsl_ucc_hdlc.c:855:28: sparse: sparse: incorrect type in >> argument 1 (different address spaces) @@ expected void const volatile >> [noderef] <asn:2> *addr @@ got restricted __be32 * @@ >> drivers/net/wan/fsl_ucc_hdlc.c:855:28: sparse: sparse: incorrect type in >> argument 1 (different address spaces) @@ expected void const volatile >> [noderef] <asn:2> *addr @@ got restricted __be32 * @@ >> drivers/net/wan/fsl_ucc_hdlc.c:855:28: sparse: sparse: incorrect type in >> argument 1 (different address spaces) @@ expected void const volatile >> [noderef] <asn:2> *addr @@ got restricted __be32 * @@ >> drivers/net/wan/fsl_ucc_hdlc.c:855:28: sparse: sparse: incorrect type in >> argument 1 (different address spaces) @@ expected void const volatile >> [noderef] <asn:2> *addr @@ got restricted __be32 * @@ >> drivers/net/wan/fsl_ucc_hdlc.c:855:28: sparse: sparse: incorrect type in >> argument 1 (different address spaces) @@ expected void const volatile >> [noderef] <asn:2> *addr @@ got restricted __be32 * @@ drivers/net/wan/fsl_ucc_hdlc.c:856:28: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] <asn:2> *addr @@ got restricted __be32 * @@ drivers/net/wan/fsl_ucc_hdlc.c:856:28: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] <asn:2> *addr @@ got restricted __be32 * @@ drivers/net/wan/fsl_ucc_hdlc.c:856:28: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] <asn:2> *addr @@ got restricted __be32 * @@ drivers/net/wan/fsl_ucc_hdlc.c:856:28: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] <asn:2> *addr @@ got restricted __be32 * @@ drivers/net/wan/fsl_ucc_hdlc.c:856:28: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] <asn:2> *addr @@ got restricted __be32 * @@ drivers/net/wan/fsl_ucc_hdlc.c:856:28: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] <asn:2> *addr @@ got restricted __be32 * @@ drivers/net/wan/fsl_ucc_hdlc.c:859:27: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] <asn:2> *addr @@ got restricted __be32 * @@ drivers/net/wan/fsl_ucc_hdlc.c:859:27: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] <asn:2> *addr @@ got restricted __be32 * @@ drivers/net/wan/fsl_ucc_hdlc.c:859:27: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] <asn:2> *addr @@ got restricted __be32 * @@ drivers/net/wan/fsl_ucc_hdlc.c:859:27: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] <asn:2> *addr @@ got restricted __be32 * @@ drivers/net/wan/fsl_ucc_hdlc.c:859:27: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] <asn:2> *addr @@ got restricted __be32 * @@ drivers/net/wan/fsl_ucc_hdlc.c:859:27: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] <asn:2> *addr @@ got restricted __be32 * @@ >> drivers/net/wan/fsl_ucc_hdlc.c:862:9: sparse: sparse: incorrect type in >> argument 2 (different address spaces) @@ expected void const volatile >> [noderef] <asn:2> * @@ got restricted __be32 * @@ drivers/net/wan/fsl_ucc_hdlc.c:867:38: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct qe_mux *qe_mux_reg @@ got struct qe_mux [noderef] <asn:2> * @@ >> drivers/net/wan/fsl_ucc_hdlc.c:869:9: sparse: sparse: incorrect type in >> argument 1 (different address spaces) @@ expected void volatile >> [noderef] <asn:2> * @@ got restricted __be32 * @@ drivers/net/wan/fsl_ucc_hdlc.c:871:9: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] <asn:2> *addr @@ got restricted __be32 * @@ drivers/net/wan/fsl_ucc_hdlc.c:872:9: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] <asn:2> *addr @@ got restricted __be32 * @@ drivers/net/wan/fsl_ucc_hdlc.c:874:9: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] <asn:2> *addr @@ got restricted __be32 * @@ drivers/net/wan/fsl_ucc_hdlc.c:996:17: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] <asn:2> *addr @@ got restricted __be16 * @@ drivers/net/wan/fsl_ucc_hdlc.c:997:17: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] <asn:2> *addr @@ got restricted __be32 * @@ drivers/net/wan/fsl_ucc_hdlc.c:1007:17: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] <asn:2> *addr @@ got restricted __be16 * @@ drivers/net/wan/fsl_ucc_hdlc.c:1008:17: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] <asn:2> *addr @@ got restricted __be32 * @@ drivers/net/wan/fsl_ucc_hdlc.c:408:9: sparse: sparse: dereference of noderef expression drivers/net/wan/fsl_ucc_hdlc.c:408:9: sparse: sparse: dereference of noderef expression drivers/net/wan/fsl_ucc_hdlc.c:725:29: sparse: sparse: dereference of noderef expression drivers/net/wan/fsl_ucc_hdlc.c:816:21: sparse: sparse: dereference of noderef expression drivers/net/wan/fsl_ucc_hdlc.c:1024:29: sparse: sparse: dereference of noderef expression vim +305 drivers/net/wan/fsl_ucc_hdlc.c c19b6d246a3562 Zhao Qiang 2016-06-06 77 c19b6d246a3562 Zhao Qiang 2016-06-06 78 static int uhdlc_init(struct ucc_hdlc_private *priv) c19b6d246a3562 Zhao Qiang 2016-06-06 79 { c19b6d246a3562 Zhao Qiang 2016-06-06 80 struct ucc_tdm_info *ut_info; c19b6d246a3562 Zhao Qiang 2016-06-06 81 struct ucc_fast_info *uf_info; c19b6d246a3562 Zhao Qiang 2016-06-06 82 u32 cecr_subblock; c19b6d246a3562 Zhao Qiang 2016-06-06 83 u16 bd_status; c19b6d246a3562 Zhao Qiang 2016-06-06 84 int ret, i; c19b6d246a3562 Zhao Qiang 2016-06-06 85 void *bd_buffer; c19b6d246a3562 Zhao Qiang 2016-06-06 86 dma_addr_t bd_dma_addr; be2e9415f8b366 Rasmus Villemoes 2019-11-28 87 s32 riptr; be2e9415f8b366 Rasmus Villemoes 2019-11-28 88 s32 tiptr; c19b6d246a3562 Zhao Qiang 2016-06-06 89 u32 gumr; c19b6d246a3562 Zhao Qiang 2016-06-06 90 c19b6d246a3562 Zhao Qiang 2016-06-06 91 ut_info = priv->ut_info; c19b6d246a3562 Zhao Qiang 2016-06-06 92 uf_info = &ut_info->uf_info; c19b6d246a3562 Zhao Qiang 2016-06-06 93 c19b6d246a3562 Zhao Qiang 2016-06-06 94 if (priv->tsa) { c19b6d246a3562 Zhao Qiang 2016-06-06 95 uf_info->tsa = 1; c19b6d246a3562 Zhao Qiang 2016-06-06 96 uf_info->ctsp = 1; 040b7c94e4ec58 David Gounaris 2018-09-03 97 uf_info->cds = 1; 040b7c94e4ec58 David Gounaris 2018-09-03 98 uf_info->ctss = 1; 040b7c94e4ec58 David Gounaris 2018-09-03 99 } else { 040b7c94e4ec58 David Gounaris 2018-09-03 100 uf_info->cds = 0; 040b7c94e4ec58 David Gounaris 2018-09-03 101 uf_info->ctsp = 0; 040b7c94e4ec58 David Gounaris 2018-09-03 102 uf_info->ctss = 0; c19b6d246a3562 Zhao Qiang 2016-06-06 103 } 067bb938dad61e Holger Brunck 2017-05-17 104 067bb938dad61e Holger Brunck 2017-05-17 105 /* This sets HPM register in CMXUCR register which configures a 067bb938dad61e Holger Brunck 2017-05-17 106 * open drain connected HDLC bus 067bb938dad61e Holger Brunck 2017-05-17 107 */ 067bb938dad61e Holger Brunck 2017-05-17 108 if (priv->hdlc_bus) 067bb938dad61e Holger Brunck 2017-05-17 109 uf_info->brkpt_support = 1; 067bb938dad61e Holger Brunck 2017-05-17 110 c19b6d246a3562 Zhao Qiang 2016-06-06 111 uf_info->uccm_mask = ((UCC_HDLC_UCCE_RXB | UCC_HDLC_UCCE_RXF | c19b6d246a3562 Zhao Qiang 2016-06-06 112 UCC_HDLC_UCCE_TXB) << 16); c19b6d246a3562 Zhao Qiang 2016-06-06 113 c19b6d246a3562 Zhao Qiang 2016-06-06 114 ret = ucc_fast_init(uf_info, &priv->uccf); c19b6d246a3562 Zhao Qiang 2016-06-06 115 if (ret) { c19b6d246a3562 Zhao Qiang 2016-06-06 116 dev_err(priv->dev, "Failed to init uccf."); c19b6d246a3562 Zhao Qiang 2016-06-06 117 return ret; c19b6d246a3562 Zhao Qiang 2016-06-06 118 } c19b6d246a3562 Zhao Qiang 2016-06-06 119 c19b6d246a3562 Zhao Qiang 2016-06-06 120 priv->uf_regs = priv->uccf->uf_regs; c19b6d246a3562 Zhao Qiang 2016-06-06 121 ucc_fast_disable(priv->uccf, COMM_DIR_RX | COMM_DIR_TX); c19b6d246a3562 Zhao Qiang 2016-06-06 122 c19b6d246a3562 Zhao Qiang 2016-06-06 123 /* Loopback mode */ c19b6d246a3562 Zhao Qiang 2016-06-06 124 if (priv->loopback) { c19b6d246a3562 Zhao Qiang 2016-06-06 125 dev_info(priv->dev, "Loopback Mode\n"); 54e9e0874938ba Holger Brunck 2017-05-17 126 /* use the same clock when work in loopback */ 54e9e0874938ba Holger Brunck 2017-05-17 127 qe_setbrg(ut_info->uf_info.rx_clock, 20000000, 1); 54e9e0874938ba Holger Brunck 2017-05-17 128 c19b6d246a3562 Zhao Qiang 2016-06-06 129 gumr = ioread32be(&priv->uf_regs->gumr); c19b6d246a3562 Zhao Qiang 2016-06-06 130 gumr |= (UCC_FAST_GUMR_LOOPBACK | UCC_FAST_GUMR_CDS | c19b6d246a3562 Zhao Qiang 2016-06-06 131 UCC_FAST_GUMR_TCI); c19b6d246a3562 Zhao Qiang 2016-06-06 132 gumr &= ~(UCC_FAST_GUMR_CTSP | UCC_FAST_GUMR_RSYN); c19b6d246a3562 Zhao Qiang 2016-06-06 133 iowrite32be(gumr, &priv->uf_regs->gumr); c19b6d246a3562 Zhao Qiang 2016-06-06 134 } c19b6d246a3562 Zhao Qiang 2016-06-06 135 c19b6d246a3562 Zhao Qiang 2016-06-06 136 /* Initialize SI */ c19b6d246a3562 Zhao Qiang 2016-06-06 137 if (priv->tsa) c19b6d246a3562 Zhao Qiang 2016-06-06 138 ucc_tdm_init(priv->utdm, priv->ut_info); c19b6d246a3562 Zhao Qiang 2016-06-06 139 c19b6d246a3562 Zhao Qiang 2016-06-06 140 /* Write to QE CECR, UCCx channel to Stop Transmission */ c19b6d246a3562 Zhao Qiang 2016-06-06 141 cecr_subblock = ucc_fast_get_qe_cr_subblock(uf_info->ucc_num); c19b6d246a3562 Zhao Qiang 2016-06-06 142 ret = qe_issue_cmd(QE_STOP_TX, cecr_subblock, c19b6d246a3562 Zhao Qiang 2016-06-06 143 QE_CR_PROTOCOL_UNSPECIFIED, 0); c19b6d246a3562 Zhao Qiang 2016-06-06 144 c19b6d246a3562 Zhao Qiang 2016-06-06 145 /* Set UPSMR normal mode (need fixed)*/ c19b6d246a3562 Zhao Qiang 2016-06-06 146 iowrite32be(0, &priv->uf_regs->upsmr); c19b6d246a3562 Zhao Qiang 2016-06-06 147 067bb938dad61e Holger Brunck 2017-05-17 148 /* hdlc_bus mode */ 067bb938dad61e Holger Brunck 2017-05-17 149 if (priv->hdlc_bus) { 067bb938dad61e Holger Brunck 2017-05-17 150 u32 upsmr; 067bb938dad61e Holger Brunck 2017-05-17 151 067bb938dad61e Holger Brunck 2017-05-17 152 dev_info(priv->dev, "HDLC bus Mode\n"); 067bb938dad61e Holger Brunck 2017-05-17 153 upsmr = ioread32be(&priv->uf_regs->upsmr); 067bb938dad61e Holger Brunck 2017-05-17 154 067bb938dad61e Holger Brunck 2017-05-17 155 /* bus mode and retransmit enable, with collision window 067bb938dad61e Holger Brunck 2017-05-17 156 * set to 8 bytes 067bb938dad61e Holger Brunck 2017-05-17 157 */ 067bb938dad61e Holger Brunck 2017-05-17 158 upsmr |= UCC_HDLC_UPSMR_RTE | UCC_HDLC_UPSMR_BUS | 067bb938dad61e Holger Brunck 2017-05-17 159 UCC_HDLC_UPSMR_CW8; 067bb938dad61e Holger Brunck 2017-05-17 160 iowrite32be(upsmr, &priv->uf_regs->upsmr); 067bb938dad61e Holger Brunck 2017-05-17 161 067bb938dad61e Holger Brunck 2017-05-17 162 /* explicitly disable CDS & CTSP */ 067bb938dad61e Holger Brunck 2017-05-17 163 gumr = ioread32be(&priv->uf_regs->gumr); 067bb938dad61e Holger Brunck 2017-05-17 164 gumr &= ~(UCC_FAST_GUMR_CDS | UCC_FAST_GUMR_CTSP); 067bb938dad61e Holger Brunck 2017-05-17 165 /* set automatic sync to explicitly ignore CD signal */ 067bb938dad61e Holger Brunck 2017-05-17 166 gumr |= UCC_FAST_GUMR_SYNL_AUTO; 067bb938dad61e Holger Brunck 2017-05-17 167 iowrite32be(gumr, &priv->uf_regs->gumr); 067bb938dad61e Holger Brunck 2017-05-17 168 } 067bb938dad61e Holger Brunck 2017-05-17 169 c19b6d246a3562 Zhao Qiang 2016-06-06 170 priv->rx_ring_size = RX_BD_RING_LEN; c19b6d246a3562 Zhao Qiang 2016-06-06 171 priv->tx_ring_size = TX_BD_RING_LEN; c19b6d246a3562 Zhao Qiang 2016-06-06 172 /* Alloc Rx BD */ c19b6d246a3562 Zhao Qiang 2016-06-06 173 priv->rx_bd_base = dma_alloc_coherent(priv->dev, 5b8aad93c52bdd Holger Brunck 2017-05-17 174 RX_BD_RING_LEN * sizeof(struct qe_bd), c19b6d246a3562 Zhao Qiang 2016-06-06 175 &priv->dma_rx_bd, GFP_KERNEL); c19b6d246a3562 Zhao Qiang 2016-06-06 176 c19b6d246a3562 Zhao Qiang 2016-06-06 177 if (!priv->rx_bd_base) { c19b6d246a3562 Zhao Qiang 2016-06-06 178 dev_err(priv->dev, "Cannot allocate MURAM memory for RxBDs\n"); c19b6d246a3562 Zhao Qiang 2016-06-06 179 ret = -ENOMEM; 1efb597d8bf56c Zhao Qiang 2016-07-15 180 goto free_uccf; c19b6d246a3562 Zhao Qiang 2016-06-06 181 } c19b6d246a3562 Zhao Qiang 2016-06-06 182 c19b6d246a3562 Zhao Qiang 2016-06-06 183 /* Alloc Tx BD */ c19b6d246a3562 Zhao Qiang 2016-06-06 184 priv->tx_bd_base = dma_alloc_coherent(priv->dev, 5b8aad93c52bdd Holger Brunck 2017-05-17 185 TX_BD_RING_LEN * sizeof(struct qe_bd), c19b6d246a3562 Zhao Qiang 2016-06-06 186 &priv->dma_tx_bd, GFP_KERNEL); c19b6d246a3562 Zhao Qiang 2016-06-06 187 c19b6d246a3562 Zhao Qiang 2016-06-06 188 if (!priv->tx_bd_base) { c19b6d246a3562 Zhao Qiang 2016-06-06 189 dev_err(priv->dev, "Cannot allocate MURAM memory for TxBDs\n"); c19b6d246a3562 Zhao Qiang 2016-06-06 190 ret = -ENOMEM; 1efb597d8bf56c Zhao Qiang 2016-07-15 191 goto free_rx_bd; c19b6d246a3562 Zhao Qiang 2016-06-06 192 } c19b6d246a3562 Zhao Qiang 2016-06-06 193 c19b6d246a3562 Zhao Qiang 2016-06-06 194 /* Alloc parameter ram for ucc hdlc */ 85deed56032b6c Holger Brunck 2017-05-22 195 priv->ucc_pram_offset = qe_muram_alloc(sizeof(struct ucc_hdlc_param), c19b6d246a3562 Zhao Qiang 2016-06-06 196 ALIGNMENT_OF_UCC_HDLC_PRAM); c19b6d246a3562 Zhao Qiang 2016-06-06 197 be2e9415f8b366 Rasmus Villemoes 2019-11-28 198 if (priv->ucc_pram_offset < 0) { 24a24d07d688a4 Colin Ian King 2016-08-28 199 dev_err(priv->dev, "Can not allocate MURAM for hdlc parameter.\n"); c19b6d246a3562 Zhao Qiang 2016-06-06 200 ret = -ENOMEM; 1efb597d8bf56c Zhao Qiang 2016-07-15 201 goto free_tx_bd; c19b6d246a3562 Zhao Qiang 2016-06-06 202 } c19b6d246a3562 Zhao Qiang 2016-06-06 203 6396bb221514d2 Kees Cook 2018-06-12 204 priv->rx_skbuff = kcalloc(priv->rx_ring_size, 6396bb221514d2 Kees Cook 2018-06-12 205 sizeof(*priv->rx_skbuff), c19b6d246a3562 Zhao Qiang 2016-06-06 206 GFP_KERNEL); c19b6d246a3562 Zhao Qiang 2016-06-06 207 if (!priv->rx_skbuff) 1efb597d8bf56c Zhao Qiang 2016-07-15 208 goto free_ucc_pram; c19b6d246a3562 Zhao Qiang 2016-06-06 209 6396bb221514d2 Kees Cook 2018-06-12 210 priv->tx_skbuff = kcalloc(priv->tx_ring_size, 6396bb221514d2 Kees Cook 2018-06-12 211 sizeof(*priv->tx_skbuff), c19b6d246a3562 Zhao Qiang 2016-06-06 212 GFP_KERNEL); c19b6d246a3562 Zhao Qiang 2016-06-06 213 if (!priv->tx_skbuff) 1efb597d8bf56c Zhao Qiang 2016-07-15 214 goto free_rx_skbuff; c19b6d246a3562 Zhao Qiang 2016-06-06 215 c19b6d246a3562 Zhao Qiang 2016-06-06 216 priv->skb_curtx = 0; c19b6d246a3562 Zhao Qiang 2016-06-06 217 priv->skb_dirtytx = 0; c19b6d246a3562 Zhao Qiang 2016-06-06 218 priv->curtx_bd = priv->tx_bd_base; c19b6d246a3562 Zhao Qiang 2016-06-06 219 priv->dirty_tx = priv->tx_bd_base; c19b6d246a3562 Zhao Qiang 2016-06-06 220 priv->currx_bd = priv->rx_bd_base; c19b6d246a3562 Zhao Qiang 2016-06-06 221 priv->currx_bdnum = 0; c19b6d246a3562 Zhao Qiang 2016-06-06 222 c19b6d246a3562 Zhao Qiang 2016-06-06 223 /* init parameter base */ c19b6d246a3562 Zhao Qiang 2016-06-06 224 cecr_subblock = ucc_fast_get_qe_cr_subblock(uf_info->ucc_num); c19b6d246a3562 Zhao Qiang 2016-06-06 225 ret = qe_issue_cmd(QE_ASSIGN_PAGE_TO_DEVICE, cecr_subblock, c19b6d246a3562 Zhao Qiang 2016-06-06 226 QE_CR_PROTOCOL_UNSPECIFIED, priv->ucc_pram_offset); c19b6d246a3562 Zhao Qiang 2016-06-06 227 c19b6d246a3562 Zhao Qiang 2016-06-06 228 priv->ucc_pram = (struct ucc_hdlc_param __iomem *) c19b6d246a3562 Zhao Qiang 2016-06-06 229 qe_muram_addr(priv->ucc_pram_offset); c19b6d246a3562 Zhao Qiang 2016-06-06 230 c19b6d246a3562 Zhao Qiang 2016-06-06 231 /* Zero out parameter ram */ c19b6d246a3562 Zhao Qiang 2016-06-06 232 memset_io(priv->ucc_pram, 0, sizeof(struct ucc_hdlc_param)); c19b6d246a3562 Zhao Qiang 2016-06-06 233 c19b6d246a3562 Zhao Qiang 2016-06-06 234 /* Alloc riptr, tiptr */ c19b6d246a3562 Zhao Qiang 2016-06-06 235 riptr = qe_muram_alloc(32, 32); be2e9415f8b366 Rasmus Villemoes 2019-11-28 236 if (riptr < 0) { c19b6d246a3562 Zhao Qiang 2016-06-06 237 dev_err(priv->dev, "Cannot allocate MURAM mem for Receive internal temp data pointer\n"); c19b6d246a3562 Zhao Qiang 2016-06-06 238 ret = -ENOMEM; 1efb597d8bf56c Zhao Qiang 2016-07-15 239 goto free_tx_skbuff; c19b6d246a3562 Zhao Qiang 2016-06-06 240 } c19b6d246a3562 Zhao Qiang 2016-06-06 241 c19b6d246a3562 Zhao Qiang 2016-06-06 242 tiptr = qe_muram_alloc(32, 32); be2e9415f8b366 Rasmus Villemoes 2019-11-28 243 if (tiptr < 0) { c19b6d246a3562 Zhao Qiang 2016-06-06 244 dev_err(priv->dev, "Cannot allocate MURAM mem for Transmit internal temp data pointer\n"); c19b6d246a3562 Zhao Qiang 2016-06-06 245 ret = -ENOMEM; 1efb597d8bf56c Zhao Qiang 2016-07-15 246 goto free_riptr; c19b6d246a3562 Zhao Qiang 2016-06-06 247 } 148587a59f6b85 Rasmus Villemoes 2019-11-28 248 if (riptr != (u16)riptr || tiptr != (u16)tiptr) { 148587a59f6b85 Rasmus Villemoes 2019-11-28 249 dev_err(priv->dev, "MURAM allocation out of addressable range\n"); 148587a59f6b85 Rasmus Villemoes 2019-11-28 250 ret = -ENOMEM; 148587a59f6b85 Rasmus Villemoes 2019-11-28 251 goto free_tiptr; 148587a59f6b85 Rasmus Villemoes 2019-11-28 252 } c19b6d246a3562 Zhao Qiang 2016-06-06 253 c19b6d246a3562 Zhao Qiang 2016-06-06 254 /* Set RIPTR, TIPTR */ c19b6d246a3562 Zhao Qiang 2016-06-06 255 iowrite16be(riptr, &priv->ucc_pram->riptr); c19b6d246a3562 Zhao Qiang 2016-06-06 256 iowrite16be(tiptr, &priv->ucc_pram->tiptr); c19b6d246a3562 Zhao Qiang 2016-06-06 257 c19b6d246a3562 Zhao Qiang 2016-06-06 258 /* Set MRBLR */ c19b6d246a3562 Zhao Qiang 2016-06-06 259 iowrite16be(MAX_RX_BUF_LENGTH, &priv->ucc_pram->mrblr); c19b6d246a3562 Zhao Qiang 2016-06-06 260 c19b6d246a3562 Zhao Qiang 2016-06-06 261 /* Set RBASE, TBASE */ c19b6d246a3562 Zhao Qiang 2016-06-06 262 iowrite32be(priv->dma_rx_bd, &priv->ucc_pram->rbase); c19b6d246a3562 Zhao Qiang 2016-06-06 263 iowrite32be(priv->dma_tx_bd, &priv->ucc_pram->tbase); c19b6d246a3562 Zhao Qiang 2016-06-06 264 c19b6d246a3562 Zhao Qiang 2016-06-06 265 /* Set RSTATE, TSTATE */ c19b6d246a3562 Zhao Qiang 2016-06-06 266 iowrite32be(BMR_GBL | BMR_BIG_ENDIAN, &priv->ucc_pram->rstate); c19b6d246a3562 Zhao Qiang 2016-06-06 267 iowrite32be(BMR_GBL | BMR_BIG_ENDIAN, &priv->ucc_pram->tstate); c19b6d246a3562 Zhao Qiang 2016-06-06 268 c19b6d246a3562 Zhao Qiang 2016-06-06 269 /* Set C_MASK, C_PRES for 16bit CRC */ c19b6d246a3562 Zhao Qiang 2016-06-06 270 iowrite32be(CRC_16BIT_MASK, &priv->ucc_pram->c_mask); c19b6d246a3562 Zhao Qiang 2016-06-06 271 iowrite32be(CRC_16BIT_PRES, &priv->ucc_pram->c_pres); c19b6d246a3562 Zhao Qiang 2016-06-06 272 c19b6d246a3562 Zhao Qiang 2016-06-06 273 iowrite16be(MAX_FRAME_LENGTH, &priv->ucc_pram->mflr); c19b6d246a3562 Zhao Qiang 2016-06-06 274 iowrite16be(DEFAULT_RFTHR, &priv->ucc_pram->rfthr); c19b6d246a3562 Zhao Qiang 2016-06-06 275 iowrite16be(DEFAULT_RFTHR, &priv->ucc_pram->rfcnt); 045f77baf6b429 David Gounaris 2018-09-03 276 iowrite16be(priv->hmask, &priv->ucc_pram->hmask); c19b6d246a3562 Zhao Qiang 2016-06-06 277 iowrite16be(DEFAULT_HDLC_ADDR, &priv->ucc_pram->haddr1); c19b6d246a3562 Zhao Qiang 2016-06-06 278 iowrite16be(DEFAULT_HDLC_ADDR, &priv->ucc_pram->haddr2); c19b6d246a3562 Zhao Qiang 2016-06-06 279 iowrite16be(DEFAULT_HDLC_ADDR, &priv->ucc_pram->haddr3); c19b6d246a3562 Zhao Qiang 2016-06-06 280 iowrite16be(DEFAULT_HDLC_ADDR, &priv->ucc_pram->haddr4); c19b6d246a3562 Zhao Qiang 2016-06-06 281 c19b6d246a3562 Zhao Qiang 2016-06-06 282 /* Get BD buffer */ 750afb08ca7131 Luis Chamberlain 2019-01-04 283 bd_buffer = dma_alloc_coherent(priv->dev, 750afb08ca7131 Luis Chamberlain 2019-01-04 284 (RX_BD_RING_LEN + TX_BD_RING_LEN) * MAX_RX_BUF_LENGTH, c19b6d246a3562 Zhao Qiang 2016-06-06 285 &bd_dma_addr, GFP_KERNEL); c19b6d246a3562 Zhao Qiang 2016-06-06 286 c19b6d246a3562 Zhao Qiang 2016-06-06 287 if (!bd_buffer) { c19b6d246a3562 Zhao Qiang 2016-06-06 288 dev_err(priv->dev, "Could not allocate buffer descriptors\n"); c19b6d246a3562 Zhao Qiang 2016-06-06 289 ret = -ENOMEM; 1efb597d8bf56c Zhao Qiang 2016-07-15 290 goto free_tiptr; c19b6d246a3562 Zhao Qiang 2016-06-06 291 } c19b6d246a3562 Zhao Qiang 2016-06-06 292 c19b6d246a3562 Zhao Qiang 2016-06-06 293 priv->rx_buffer = bd_buffer; c19b6d246a3562 Zhao Qiang 2016-06-06 294 priv->tx_buffer = bd_buffer + RX_BD_RING_LEN * MAX_RX_BUF_LENGTH; c19b6d246a3562 Zhao Qiang 2016-06-06 295 c19b6d246a3562 Zhao Qiang 2016-06-06 296 priv->dma_rx_addr = bd_dma_addr; c19b6d246a3562 Zhao Qiang 2016-06-06 297 priv->dma_tx_addr = bd_dma_addr + RX_BD_RING_LEN * MAX_RX_BUF_LENGTH; c19b6d246a3562 Zhao Qiang 2016-06-06 298 c19b6d246a3562 Zhao Qiang 2016-06-06 299 for (i = 0; i < RX_BD_RING_LEN; i++) { c19b6d246a3562 Zhao Qiang 2016-06-06 300 if (i < (RX_BD_RING_LEN - 1)) c19b6d246a3562 Zhao Qiang 2016-06-06 301 bd_status = R_E_S | R_I_S; c19b6d246a3562 Zhao Qiang 2016-06-06 302 else c19b6d246a3562 Zhao Qiang 2016-06-06 303 bd_status = R_E_S | R_I_S | R_W_S; c19b6d246a3562 Zhao Qiang 2016-06-06 304 c19b6d246a3562 Zhao Qiang 2016-06-06 @305 iowrite16be(bd_status, &priv->rx_bd_base[i].status); c19b6d246a3562 Zhao Qiang 2016-06-06 @306 iowrite32be(priv->dma_rx_addr + i * MAX_RX_BUF_LENGTH, c19b6d246a3562 Zhao Qiang 2016-06-06 307 &priv->rx_bd_base[i].buf); c19b6d246a3562 Zhao Qiang 2016-06-06 308 } c19b6d246a3562 Zhao Qiang 2016-06-06 309 c19b6d246a3562 Zhao Qiang 2016-06-06 310 for (i = 0; i < TX_BD_RING_LEN; i++) { c19b6d246a3562 Zhao Qiang 2016-06-06 311 if (i < (TX_BD_RING_LEN - 1)) c19b6d246a3562 Zhao Qiang 2016-06-06 312 bd_status = T_I_S | T_TC_S; c19b6d246a3562 Zhao Qiang 2016-06-06 313 else c19b6d246a3562 Zhao Qiang 2016-06-06 314 bd_status = T_I_S | T_TC_S | T_W_S; c19b6d246a3562 Zhao Qiang 2016-06-06 315 c19b6d246a3562 Zhao Qiang 2016-06-06 316 iowrite16be(bd_status, &priv->tx_bd_base[i].status); c19b6d246a3562 Zhao Qiang 2016-06-06 317 iowrite32be(priv->dma_tx_addr + i * MAX_RX_BUF_LENGTH, c19b6d246a3562 Zhao Qiang 2016-06-06 318 &priv->tx_bd_base[i].buf); c19b6d246a3562 Zhao Qiang 2016-06-06 319 } c19b6d246a3562 Zhao Qiang 2016-06-06 320 c19b6d246a3562 Zhao Qiang 2016-06-06 321 return 0; c19b6d246a3562 Zhao Qiang 2016-06-06 322 1efb597d8bf56c Zhao Qiang 2016-07-15 323 free_tiptr: c19b6d246a3562 Zhao Qiang 2016-06-06 324 qe_muram_free(tiptr); 1efb597d8bf56c Zhao Qiang 2016-07-15 325 free_riptr: c19b6d246a3562 Zhao Qiang 2016-06-06 326 qe_muram_free(riptr); 1efb597d8bf56c Zhao Qiang 2016-07-15 327 free_tx_skbuff: c19b6d246a3562 Zhao Qiang 2016-06-06 328 kfree(priv->tx_skbuff); 1efb597d8bf56c Zhao Qiang 2016-07-15 329 free_rx_skbuff: c19b6d246a3562 Zhao Qiang 2016-06-06 330 kfree(priv->rx_skbuff); 1efb597d8bf56c Zhao Qiang 2016-07-15 331 free_ucc_pram: c19b6d246a3562 Zhao Qiang 2016-06-06 332 qe_muram_free(priv->ucc_pram_offset); 1efb597d8bf56c Zhao Qiang 2016-07-15 333 free_tx_bd: c19b6d246a3562 Zhao Qiang 2016-06-06 334 dma_free_coherent(priv->dev, 5b8aad93c52bdd Holger Brunck 2017-05-17 335 TX_BD_RING_LEN * sizeof(struct qe_bd), c19b6d246a3562 Zhao Qiang 2016-06-06 336 priv->tx_bd_base, priv->dma_tx_bd); 1efb597d8bf56c Zhao Qiang 2016-07-15 337 free_rx_bd: c19b6d246a3562 Zhao Qiang 2016-06-06 338 dma_free_coherent(priv->dev, 5b8aad93c52bdd Holger Brunck 2017-05-17 339 RX_BD_RING_LEN * sizeof(struct qe_bd), c19b6d246a3562 Zhao Qiang 2016-06-06 340 priv->rx_bd_base, priv->dma_rx_bd); 1efb597d8bf56c Zhao Qiang 2016-07-15 341 free_uccf: c19b6d246a3562 Zhao Qiang 2016-06-06 342 ucc_fast_free(priv->uccf); c19b6d246a3562 Zhao Qiang 2016-06-06 343 c19b6d246a3562 Zhao Qiang 2016-06-06 344 return ret; c19b6d246a3562 Zhao Qiang 2016-06-06 345 } c19b6d246a3562 Zhao Qiang 2016-06-06 346 c19b6d246a3562 Zhao Qiang 2016-06-06 347 static netdev_tx_t ucc_hdlc_tx(struct sk_buff *skb, struct net_device *dev) c19b6d246a3562 Zhao Qiang 2016-06-06 348 { c19b6d246a3562 Zhao Qiang 2016-06-06 349 hdlc_device *hdlc = dev_to_hdlc(dev); c19b6d246a3562 Zhao Qiang 2016-06-06 350 struct ucc_hdlc_private *priv = (struct ucc_hdlc_private *)hdlc->priv; c19b6d246a3562 Zhao Qiang 2016-06-06 351 struct qe_bd __iomem *bd; c19b6d246a3562 Zhao Qiang 2016-06-06 352 u16 bd_status; c19b6d246a3562 Zhao Qiang 2016-06-06 353 unsigned long flags; c19b6d246a3562 Zhao Qiang 2016-06-06 354 u16 *proto_head; c19b6d246a3562 Zhao Qiang 2016-06-06 355 c19b6d246a3562 Zhao Qiang 2016-06-06 356 switch (dev->type) { c19b6d246a3562 Zhao Qiang 2016-06-06 357 case ARPHRD_RAWHDLC: c19b6d246a3562 Zhao Qiang 2016-06-06 358 if (skb_headroom(skb) < HDLC_HEAD_LEN) { c19b6d246a3562 Zhao Qiang 2016-06-06 359 dev->stats.tx_dropped++; c19b6d246a3562 Zhao Qiang 2016-06-06 360 dev_kfree_skb(skb); c19b6d246a3562 Zhao Qiang 2016-06-06 361 netdev_err(dev, "No enough space for hdlc head\n"); c19b6d246a3562 Zhao Qiang 2016-06-06 362 return -ENOMEM; c19b6d246a3562 Zhao Qiang 2016-06-06 363 } c19b6d246a3562 Zhao Qiang 2016-06-06 364 c19b6d246a3562 Zhao Qiang 2016-06-06 365 skb_push(skb, HDLC_HEAD_LEN); c19b6d246a3562 Zhao Qiang 2016-06-06 366 c19b6d246a3562 Zhao Qiang 2016-06-06 367 proto_head = (u16 *)skb->data; c19b6d246a3562 Zhao Qiang 2016-06-06 @368 *proto_head = htons(DEFAULT_HDLC_HEAD); c19b6d246a3562 Zhao Qiang 2016-06-06 369 c19b6d246a3562 Zhao Qiang 2016-06-06 370 dev->stats.tx_bytes += skb->len; c19b6d246a3562 Zhao Qiang 2016-06-06 371 break; c19b6d246a3562 Zhao Qiang 2016-06-06 372 c19b6d246a3562 Zhao Qiang 2016-06-06 373 case ARPHRD_PPP: c19b6d246a3562 Zhao Qiang 2016-06-06 374 proto_head = (u16 *)skb->data; c19b6d246a3562 Zhao Qiang 2016-06-06 375 if (*proto_head != htons(DEFAULT_PPP_HEAD)) { c19b6d246a3562 Zhao Qiang 2016-06-06 376 dev->stats.tx_dropped++; c19b6d246a3562 Zhao Qiang 2016-06-06 377 dev_kfree_skb(skb); c19b6d246a3562 Zhao Qiang 2016-06-06 378 netdev_err(dev, "Wrong ppp header\n"); c19b6d246a3562 Zhao Qiang 2016-06-06 379 return -ENOMEM; c19b6d246a3562 Zhao Qiang 2016-06-06 380 } c19b6d246a3562 Zhao Qiang 2016-06-06 381 c19b6d246a3562 Zhao Qiang 2016-06-06 382 dev->stats.tx_bytes += skb->len; c19b6d246a3562 Zhao Qiang 2016-06-06 383 break; c19b6d246a3562 Zhao Qiang 2016-06-06 384 8978ca7c8b7b07 David Gounaris 2018-09-03 385 case ARPHRD_ETHER: 8978ca7c8b7b07 David Gounaris 2018-09-03 386 dev->stats.tx_bytes += skb->len; 8978ca7c8b7b07 David Gounaris 2018-09-03 387 break; 8978ca7c8b7b07 David Gounaris 2018-09-03 388 c19b6d246a3562 Zhao Qiang 2016-06-06 389 default: c19b6d246a3562 Zhao Qiang 2016-06-06 390 dev->stats.tx_dropped++; c19b6d246a3562 Zhao Qiang 2016-06-06 391 dev_kfree_skb(skb); c19b6d246a3562 Zhao Qiang 2016-06-06 392 return -ENOMEM; c19b6d246a3562 Zhao Qiang 2016-06-06 393 } 2e7ad56aa54778 Mathias Thore 2018-11-07 394 netdev_sent_queue(dev, skb->len); c19b6d246a3562 Zhao Qiang 2016-06-06 395 spin_lock_irqsave(&priv->lock, flags); c19b6d246a3562 Zhao Qiang 2016-06-06 396 c19b6d246a3562 Zhao Qiang 2016-06-06 397 /* Start from the next BD that should be filled */ c19b6d246a3562 Zhao Qiang 2016-06-06 @398 bd = priv->curtx_bd; c19b6d246a3562 Zhao Qiang 2016-06-06 399 bd_status = ioread16be(&bd->status); c19b6d246a3562 Zhao Qiang 2016-06-06 400 /* Save the skb pointer so we can free it later */ c19b6d246a3562 Zhao Qiang 2016-06-06 401 priv->tx_skbuff[priv->skb_curtx] = skb; c19b6d246a3562 Zhao Qiang 2016-06-06 402 c19b6d246a3562 Zhao Qiang 2016-06-06 403 /* Update the current skb pointer (wrapping if this was the last) */ c19b6d246a3562 Zhao Qiang 2016-06-06 404 priv->skb_curtx = c19b6d246a3562 Zhao Qiang 2016-06-06 405 (priv->skb_curtx + 1) & TX_RING_MOD_MASK(TX_BD_RING_LEN); c19b6d246a3562 Zhao Qiang 2016-06-06 406 c19b6d246a3562 Zhao Qiang 2016-06-06 407 /* copy skb data to tx buffer for sdma processing */ c19b6d246a3562 Zhao Qiang 2016-06-06 408 memcpy(priv->tx_buffer + (be32_to_cpu(bd->buf) - priv->dma_tx_addr), c19b6d246a3562 Zhao Qiang 2016-06-06 409 skb->data, skb->len); c19b6d246a3562 Zhao Qiang 2016-06-06 410 c19b6d246a3562 Zhao Qiang 2016-06-06 411 /* set bd status and length */ c19b6d246a3562 Zhao Qiang 2016-06-06 412 bd_status = (bd_status & T_W_S) | T_R_S | T_I_S | T_L_S | T_TC_S; c19b6d246a3562 Zhao Qiang 2016-06-06 413 c19b6d246a3562 Zhao Qiang 2016-06-06 414 iowrite16be(skb->len, &bd->length); 02bb56ddc67116 Zhao Qiang 2017-03-14 415 iowrite16be(bd_status, &bd->status); c19b6d246a3562 Zhao Qiang 2016-06-06 416 c19b6d246a3562 Zhao Qiang 2016-06-06 417 /* Move to next BD in the ring */ c19b6d246a3562 Zhao Qiang 2016-06-06 418 if (!(bd_status & T_W_S)) c19b6d246a3562 Zhao Qiang 2016-06-06 419 bd += 1; c19b6d246a3562 Zhao Qiang 2016-06-06 420 else c19b6d246a3562 Zhao Qiang 2016-06-06 @421 bd = priv->tx_bd_base; c19b6d246a3562 Zhao Qiang 2016-06-06 422 c19b6d246a3562 Zhao Qiang 2016-06-06 423 if (bd == priv->dirty_tx) { c19b6d246a3562 Zhao Qiang 2016-06-06 424 if (!netif_queue_stopped(dev)) c19b6d246a3562 Zhao Qiang 2016-06-06 425 netif_stop_queue(dev); c19b6d246a3562 Zhao Qiang 2016-06-06 426 } c19b6d246a3562 Zhao Qiang 2016-06-06 427 c19b6d246a3562 Zhao Qiang 2016-06-06 428 priv->curtx_bd = bd; c19b6d246a3562 Zhao Qiang 2016-06-06 429 c19b6d246a3562 Zhao Qiang 2016-06-06 430 spin_unlock_irqrestore(&priv->lock, flags); c19b6d246a3562 Zhao Qiang 2016-06-06 431 c19b6d246a3562 Zhao Qiang 2016-06-06 432 return NETDEV_TX_OK; c19b6d246a3562 Zhao Qiang 2016-06-06 433 } c19b6d246a3562 Zhao Qiang 2016-06-06 434 ba59d5705825fb Mathias Thore 2018-10-22 435 static int hdlc_tx_restart(struct ucc_hdlc_private *priv) ba59d5705825fb Mathias Thore 2018-10-22 436 { ba59d5705825fb Mathias Thore 2018-10-22 437 u32 cecr_subblock; ba59d5705825fb Mathias Thore 2018-10-22 438 ba59d5705825fb Mathias Thore 2018-10-22 439 cecr_subblock = ba59d5705825fb Mathias Thore 2018-10-22 440 ucc_fast_get_qe_cr_subblock(priv->ut_info->uf_info.ucc_num); ba59d5705825fb Mathias Thore 2018-10-22 441 ba59d5705825fb Mathias Thore 2018-10-22 442 qe_issue_cmd(QE_RESTART_TX, cecr_subblock, ba59d5705825fb Mathias Thore 2018-10-22 443 QE_CR_PROTOCOL_UNSPECIFIED, 0); ba59d5705825fb Mathias Thore 2018-10-22 444 return 0; ba59d5705825fb Mathias Thore 2018-10-22 445 } ba59d5705825fb Mathias Thore 2018-10-22 446 c19b6d246a3562 Zhao Qiang 2016-06-06 447 static int hdlc_tx_done(struct ucc_hdlc_private *priv) c19b6d246a3562 Zhao Qiang 2016-06-06 448 { c19b6d246a3562 Zhao Qiang 2016-06-06 449 /* Start from the next BD that should be filled */ c19b6d246a3562 Zhao Qiang 2016-06-06 450 struct net_device *dev = priv->ndev; 2e7ad56aa54778 Mathias Thore 2018-11-07 451 unsigned int bytes_sent = 0; 2e7ad56aa54778 Mathias Thore 2018-11-07 452 int howmany = 0; c19b6d246a3562 Zhao Qiang 2016-06-06 453 struct qe_bd *bd; /* BD pointer */ c19b6d246a3562 Zhao Qiang 2016-06-06 454 u16 bd_status; ba59d5705825fb Mathias Thore 2018-10-22 455 int tx_restart = 0; c19b6d246a3562 Zhao Qiang 2016-06-06 456 c19b6d246a3562 Zhao Qiang 2016-06-06 457 bd = priv->dirty_tx; c19b6d246a3562 Zhao Qiang 2016-06-06 @458 bd_status = ioread16be(&bd->status); c19b6d246a3562 Zhao Qiang 2016-06-06 459 c19b6d246a3562 Zhao Qiang 2016-06-06 460 /* Normal processing. */ c19b6d246a3562 Zhao Qiang 2016-06-06 461 while ((bd_status & T_R_S) == 0) { c19b6d246a3562 Zhao Qiang 2016-06-06 462 struct sk_buff *skb; c19b6d246a3562 Zhao Qiang 2016-06-06 463 ba59d5705825fb Mathias Thore 2018-10-22 464 if (bd_status & T_UN_S) { /* Underrun */ ba59d5705825fb Mathias Thore 2018-10-22 465 dev->stats.tx_fifo_errors++; ba59d5705825fb Mathias Thore 2018-10-22 466 tx_restart = 1; ba59d5705825fb Mathias Thore 2018-10-22 467 } ba59d5705825fb Mathias Thore 2018-10-22 468 if (bd_status & T_CT_S) { /* Carrier lost */ ba59d5705825fb Mathias Thore 2018-10-22 469 dev->stats.tx_carrier_errors++; ba59d5705825fb Mathias Thore 2018-10-22 470 tx_restart = 1; ba59d5705825fb Mathias Thore 2018-10-22 471 } ba59d5705825fb Mathias Thore 2018-10-22 472 c19b6d246a3562 Zhao Qiang 2016-06-06 473 /* BD contains already transmitted buffer. */ c19b6d246a3562 Zhao Qiang 2016-06-06 474 /* Handle the transmitted buffer and release */ c19b6d246a3562 Zhao Qiang 2016-06-06 475 /* the BD to be used with the current frame */ c19b6d246a3562 Zhao Qiang 2016-06-06 476 c19b6d246a3562 Zhao Qiang 2016-06-06 477 skb = priv->tx_skbuff[priv->skb_dirtytx]; c19b6d246a3562 Zhao Qiang 2016-06-06 478 if (!skb) c19b6d246a3562 Zhao Qiang 2016-06-06 479 break; 2e7ad56aa54778 Mathias Thore 2018-11-07 480 howmany++; 2e7ad56aa54778 Mathias Thore 2018-11-07 481 bytes_sent += skb->len; c19b6d246a3562 Zhao Qiang 2016-06-06 482 dev->stats.tx_packets++; c19b6d246a3562 Zhao Qiang 2016-06-06 483 memset(priv->tx_buffer + c19b6d246a3562 Zhao Qiang 2016-06-06 484 (be32_to_cpu(bd->buf) - priv->dma_tx_addr), c19b6d246a3562 Zhao Qiang 2016-06-06 485 0, skb->len); 7c3850adbcccc2 Yang Wei 2019-02-06 486 dev_consume_skb_irq(skb); c19b6d246a3562 Zhao Qiang 2016-06-06 487 c19b6d246a3562 Zhao Qiang 2016-06-06 488 priv->tx_skbuff[priv->skb_dirtytx] = NULL; c19b6d246a3562 Zhao Qiang 2016-06-06 489 priv->skb_dirtytx = c19b6d246a3562 Zhao Qiang 2016-06-06 490 (priv->skb_dirtytx + c19b6d246a3562 Zhao Qiang 2016-06-06 491 1) & TX_RING_MOD_MASK(TX_BD_RING_LEN); c19b6d246a3562 Zhao Qiang 2016-06-06 492 c19b6d246a3562 Zhao Qiang 2016-06-06 493 /* We freed a buffer, so now we can restart transmission */ c19b6d246a3562 Zhao Qiang 2016-06-06 494 if (netif_queue_stopped(dev)) c19b6d246a3562 Zhao Qiang 2016-06-06 495 netif_wake_queue(dev); c19b6d246a3562 Zhao Qiang 2016-06-06 496 c19b6d246a3562 Zhao Qiang 2016-06-06 497 /* Advance the confirmation BD pointer */ c19b6d246a3562 Zhao Qiang 2016-06-06 498 if (!(bd_status & T_W_S)) c19b6d246a3562 Zhao Qiang 2016-06-06 499 bd += 1; c19b6d246a3562 Zhao Qiang 2016-06-06 500 else c19b6d246a3562 Zhao Qiang 2016-06-06 501 bd = priv->tx_bd_base; c19b6d246a3562 Zhao Qiang 2016-06-06 502 bd_status = ioread16be(&bd->status); c19b6d246a3562 Zhao Qiang 2016-06-06 503 } c19b6d246a3562 Zhao Qiang 2016-06-06 504 priv->dirty_tx = bd; c19b6d246a3562 Zhao Qiang 2016-06-06 505 ba59d5705825fb Mathias Thore 2018-10-22 506 if (tx_restart) ba59d5705825fb Mathias Thore 2018-10-22 507 hdlc_tx_restart(priv); ba59d5705825fb Mathias Thore 2018-10-22 508 2e7ad56aa54778 Mathias Thore 2018-11-07 509 netdev_completed_queue(dev, howmany, bytes_sent); c19b6d246a3562 Zhao Qiang 2016-06-06 510 return 0; c19b6d246a3562 Zhao Qiang 2016-06-06 511 } c19b6d246a3562 Zhao Qiang 2016-06-06 512 :::::: The code at line 305 was first introduced by commit :::::: c19b6d246a35627c3a69b2fa6bdece212b48214b drivers/net: support hdlc function for QE-UCC :::::: TO: Zhao Qiang <qiang.z...@nxp.com> :::::: CC: David S. Miller <da...@davemloft.net> --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-...@lists.01.org
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