tree: git://git.infradead.org/users/hch/misc.git dma_alloc_pages head: 43a18af742023face57c43633bca9b5f1aa21c3b commit: 84a45a398f32ef52e3cbe97ea88822c96b4c538a [28/30] dmapool: add dma_alloc_pages support config: x86_64-randconfig-a006-20200818 (attached as .config) compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project b34b1e38381fa4d1b1d9751a6b5233b68e734cfe) reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # install x86_64 cross compiling tool for clang build # apt-get install binutils-x86-64-linux-gnu git checkout 84a45a398f32ef52e3cbe97ea88822c96b4c538a # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): *reg = ioread32(tee->io_regs + tee->vdata->cmdresp_reg); ^ iowrite32(lower_32_bits(cmd_buffer), ^ drivers/crypto/ccp/tee-dev.c:175:2: error: implicit declaration of function 'iowrite32' [-Werror,-Wimplicit-function-declaration] iowrite32(TEE_RING_DESTROY_CMD, ^ drivers/crypto/ccp/tee-dev.c:258:10: error: implicit declaration of function 'ioread32' [-Werror,-Wimplicit-function-declaration] rptr = ioread32(tee->io_regs + tee->vdata->ring_rptr_reg); ^ drivers/crypto/ccp/tee-dev.c:295:2: error: implicit declaration of function 'iowrite32' [-Werror,-Wimplicit-function-declaration] iowrite32(tee->rb_mgr.wptr, tee->io_regs + tee->vdata->ring_wptr_reg); ^ 5 errors generated. git remote add hch-misc git://git.infradead.org/users/hch/misc.git git fetch --no-tags hch-misc dma_alloc_pages git checkout 84a45a398f32ef52e3cbe97ea88822c96b4c538a vim +/ioread32 +70 drivers/crypto/ccp/tee-dev.c 33960acccfbd7f Rijo Thomas 2019-12-04 62 33960acccfbd7f Rijo Thomas 2019-12-04 63 static int tee_wait_cmd_poll(struct psp_tee_device *tee, unsigned int timeout, 33960acccfbd7f Rijo Thomas 2019-12-04 64 unsigned int *reg) 33960acccfbd7f Rijo Thomas 2019-12-04 65 { 33960acccfbd7f Rijo Thomas 2019-12-04 66 /* ~10ms sleep per loop => nloop = timeout * 100 */ 33960acccfbd7f Rijo Thomas 2019-12-04 67 int nloop = timeout * 100; 33960acccfbd7f Rijo Thomas 2019-12-04 68 33960acccfbd7f Rijo Thomas 2019-12-04 69 while (--nloop) { 33960acccfbd7f Rijo Thomas 2019-12-04 @70 *reg = ioread32(tee->io_regs + tee->vdata->cmdresp_reg); 33960acccfbd7f Rijo Thomas 2019-12-04 71 if (*reg & PSP_CMDRESP_RESP) 33960acccfbd7f Rijo Thomas 2019-12-04 72 return 0; 33960acccfbd7f Rijo Thomas 2019-12-04 73 33960acccfbd7f Rijo Thomas 2019-12-04 74 usleep_range(10000, 10100); 33960acccfbd7f Rijo Thomas 2019-12-04 75 } 33960acccfbd7f Rijo Thomas 2019-12-04 76 33960acccfbd7f Rijo Thomas 2019-12-04 77 dev_err(tee->dev, "tee: command timed out, disabling PSP\n"); 33960acccfbd7f Rijo Thomas 2019-12-04 78 psp_dead = true; 33960acccfbd7f Rijo Thomas 2019-12-04 79 33960acccfbd7f Rijo Thomas 2019-12-04 80 return -ETIMEDOUT; 33960acccfbd7f Rijo Thomas 2019-12-04 81 } 33960acccfbd7f Rijo Thomas 2019-12-04 82 33960acccfbd7f Rijo Thomas 2019-12-04 83 static 33960acccfbd7f Rijo Thomas 2019-12-04 84 struct tee_init_ring_cmd *tee_alloc_cmd_buffer(struct psp_tee_device *tee) 33960acccfbd7f Rijo Thomas 2019-12-04 85 { 33960acccfbd7f Rijo Thomas 2019-12-04 86 struct tee_init_ring_cmd *cmd; 33960acccfbd7f Rijo Thomas 2019-12-04 87 33960acccfbd7f Rijo Thomas 2019-12-04 88 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 33960acccfbd7f Rijo Thomas 2019-12-04 89 if (!cmd) 33960acccfbd7f Rijo Thomas 2019-12-04 90 return NULL; 33960acccfbd7f Rijo Thomas 2019-12-04 91 33960acccfbd7f Rijo Thomas 2019-12-04 92 cmd->hi_addr = upper_32_bits(tee->rb_mgr.ring_pa); 33960acccfbd7f Rijo Thomas 2019-12-04 93 cmd->low_addr = lower_32_bits(tee->rb_mgr.ring_pa); 33960acccfbd7f Rijo Thomas 2019-12-04 94 cmd->size = tee->rb_mgr.ring_size; 33960acccfbd7f Rijo Thomas 2019-12-04 95 33960acccfbd7f Rijo Thomas 2019-12-04 96 dev_dbg(tee->dev, "tee: ring address: high = 0x%x low = 0x%x size = %u\n", 33960acccfbd7f Rijo Thomas 2019-12-04 97 cmd->hi_addr, cmd->low_addr, cmd->size); 33960acccfbd7f Rijo Thomas 2019-12-04 98 33960acccfbd7f Rijo Thomas 2019-12-04 99 return cmd; 33960acccfbd7f Rijo Thomas 2019-12-04 100 } 33960acccfbd7f Rijo Thomas 2019-12-04 101 33960acccfbd7f Rijo Thomas 2019-12-04 102 static inline void tee_free_cmd_buffer(struct tee_init_ring_cmd *cmd) 33960acccfbd7f Rijo Thomas 2019-12-04 103 { 33960acccfbd7f Rijo Thomas 2019-12-04 104 kfree(cmd); 33960acccfbd7f Rijo Thomas 2019-12-04 105 } 33960acccfbd7f Rijo Thomas 2019-12-04 106 33960acccfbd7f Rijo Thomas 2019-12-04 107 static int tee_init_ring(struct psp_tee_device *tee) 33960acccfbd7f Rijo Thomas 2019-12-04 108 { 33960acccfbd7f Rijo Thomas 2019-12-04 109 int ring_size = MAX_RING_BUFFER_ENTRIES * sizeof(struct tee_ring_cmd); 33960acccfbd7f Rijo Thomas 2019-12-04 110 struct tee_init_ring_cmd *cmd; 33960acccfbd7f Rijo Thomas 2019-12-04 111 phys_addr_t cmd_buffer; 33960acccfbd7f Rijo Thomas 2019-12-04 112 unsigned int reg; 33960acccfbd7f Rijo Thomas 2019-12-04 113 int ret; 33960acccfbd7f Rijo Thomas 2019-12-04 114 33960acccfbd7f Rijo Thomas 2019-12-04 115 BUILD_BUG_ON(sizeof(struct tee_ring_cmd) != 1024); 33960acccfbd7f Rijo Thomas 2019-12-04 116 33960acccfbd7f Rijo Thomas 2019-12-04 117 ret = tee_alloc_ring(tee, ring_size); 33960acccfbd7f Rijo Thomas 2019-12-04 118 if (ret) { 33960acccfbd7f Rijo Thomas 2019-12-04 119 dev_err(tee->dev, "tee: ring allocation failed %d\n", ret); 33960acccfbd7f Rijo Thomas 2019-12-04 120 return ret; 33960acccfbd7f Rijo Thomas 2019-12-04 121 } 33960acccfbd7f Rijo Thomas 2019-12-04 122 33960acccfbd7f Rijo Thomas 2019-12-04 123 tee->rb_mgr.wptr = 0; 33960acccfbd7f Rijo Thomas 2019-12-04 124 33960acccfbd7f Rijo Thomas 2019-12-04 125 cmd = tee_alloc_cmd_buffer(tee); 33960acccfbd7f Rijo Thomas 2019-12-04 126 if (!cmd) { 33960acccfbd7f Rijo Thomas 2019-12-04 127 tee_free_ring(tee); 33960acccfbd7f Rijo Thomas 2019-12-04 128 return -ENOMEM; 33960acccfbd7f Rijo Thomas 2019-12-04 129 } 33960acccfbd7f Rijo Thomas 2019-12-04 130 33960acccfbd7f Rijo Thomas 2019-12-04 131 cmd_buffer = __psp_pa((void *)cmd); 33960acccfbd7f Rijo Thomas 2019-12-04 132 33960acccfbd7f Rijo Thomas 2019-12-04 133 /* Send command buffer details to Trusted OS by writing to 33960acccfbd7f Rijo Thomas 2019-12-04 134 * CPU-PSP message registers 33960acccfbd7f Rijo Thomas 2019-12-04 135 */ 33960acccfbd7f Rijo Thomas 2019-12-04 136 33960acccfbd7f Rijo Thomas 2019-12-04 @137 iowrite32(lower_32_bits(cmd_buffer), 33960acccfbd7f Rijo Thomas 2019-12-04 138 tee->io_regs + tee->vdata->cmdbuff_addr_lo_reg); 33960acccfbd7f Rijo Thomas 2019-12-04 139 iowrite32(upper_32_bits(cmd_buffer), 33960acccfbd7f Rijo Thomas 2019-12-04 140 tee->io_regs + tee->vdata->cmdbuff_addr_hi_reg); 33960acccfbd7f Rijo Thomas 2019-12-04 141 iowrite32(TEE_RING_INIT_CMD, 33960acccfbd7f Rijo Thomas 2019-12-04 142 tee->io_regs + tee->vdata->cmdresp_reg); 33960acccfbd7f Rijo Thomas 2019-12-04 143 33960acccfbd7f Rijo Thomas 2019-12-04 144 ret = tee_wait_cmd_poll(tee, TEE_DEFAULT_TIMEOUT, &reg); 33960acccfbd7f Rijo Thomas 2019-12-04 145 if (ret) { 33960acccfbd7f Rijo Thomas 2019-12-04 146 dev_err(tee->dev, "tee: ring init command timed out\n"); 33960acccfbd7f Rijo Thomas 2019-12-04 147 tee_free_ring(tee); 33960acccfbd7f Rijo Thomas 2019-12-04 148 goto free_buf; 33960acccfbd7f Rijo Thomas 2019-12-04 149 } 33960acccfbd7f Rijo Thomas 2019-12-04 150 33960acccfbd7f Rijo Thomas 2019-12-04 151 if (reg & PSP_CMDRESP_ERR_MASK) { 33960acccfbd7f Rijo Thomas 2019-12-04 152 dev_err(tee->dev, "tee: ring init command failed (%#010x)\n", 33960acccfbd7f Rijo Thomas 2019-12-04 153 reg & PSP_CMDRESP_ERR_MASK); 33960acccfbd7f Rijo Thomas 2019-12-04 154 tee_free_ring(tee); 33960acccfbd7f Rijo Thomas 2019-12-04 155 ret = -EIO; 33960acccfbd7f Rijo Thomas 2019-12-04 156 } 33960acccfbd7f Rijo Thomas 2019-12-04 157 33960acccfbd7f Rijo Thomas 2019-12-04 158 free_buf: 33960acccfbd7f Rijo Thomas 2019-12-04 159 tee_free_cmd_buffer(cmd); 33960acccfbd7f Rijo Thomas 2019-12-04 160 33960acccfbd7f Rijo Thomas 2019-12-04 161 return ret; 33960acccfbd7f Rijo Thomas 2019-12-04 162 } 33960acccfbd7f Rijo Thomas 2019-12-04 163 :::::: The code at line 70 was first introduced by commit :::::: 33960acccfbd7f24d443cb3d0312ac28abe62bae crypto: ccp - add TEE support for Raven Ridge :::::: TO: Rijo Thomas <Rijo-john.Thomas(a)amd.com&gt; :::::: CC: Herbert Xu <herbert(a)gondor.apana.org.au&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org