tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: bf9f243f23e6623f310ba03fbb14e10ec3a61290 commit: d991bb1c8da842a2a0b9dc83b1005e655783f861 include/linux/compiler-gcc.h: sparse can do constant folding of __builtin_bswap*() date: 4 months ago config: powerpc64-randconfig-s032-20210910 (attached as .config) compiler: powerpc-linux-gcc (GCC) 11.2.0 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: v0.6.4-dirty # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit... git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout d991bb1c8da842a2a0b9dc83b1005e655783f861 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=powerpc64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; sparse warnings: (new ones prefixed by >>) drivers/dma/ppc4xx/adma.c:1155:49: sparse: expected void const [noderef] __iomem *addr drivers/dma/ppc4xx/adma.c:1155:49: sparse: got unsigned int * drivers/dma/ppc4xx/adma.c:1157:38: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void [noderef] __iomem *addr @@ got unsigned int * @@ drivers/dma/ppc4xx/adma.c:1157:38: sparse: expected void [noderef] __iomem *addr drivers/dma/ppc4xx/adma.c:1157:38: sparse: got unsigned int * drivers/dma/ppc4xx/adma.c:909:25: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct dma_regs *dma_reg @@ got struct dma_regs [noderef] __iomem *dma_reg @@ drivers/dma/ppc4xx/adma.c:909:25: sparse: expected struct dma_regs *dma_reg drivers/dma/ppc4xx/adma.c:909:25: sparse: got struct dma_regs [noderef] __iomem *dma_reg drivers/dma/ppc4xx/adma.c:910:40: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *addr @@ got unsigned int * @@ drivers/dma/ppc4xx/adma.c:910:40: sparse: expected void const volatile [noderef] __iomem *addr drivers/dma/ppc4xx/adma.c:910:40: sparse: got unsigned int * drivers/dma/ppc4xx/adma.c:927:37: sparse: sparse: cast to restricted __le32 drivers/dma/ppc4xx/adma.c:972:32: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *addr @@ got unsigned int * @@ drivers/dma/ppc4xx/adma.c:972:32: sparse: expected void const volatile [noderef] __iomem *addr drivers/dma/ppc4xx/adma.c:972:32: sparse: got unsigned int * drivers/dma/ppc4xx/adma.c:977:40: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] __iomem *addr @@ got unsigned int * @@ drivers/dma/ppc4xx/adma.c:977:40: sparse: expected void volatile [noderef] __iomem *addr drivers/dma/ppc4xx/adma.c:977:40: sparse: got unsigned int * drivers/dma/ppc4xx/adma.c:982:25: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct xor_regs *xor_reg @@ got struct xor_regs [noderef] __iomem *xor_reg @@ drivers/dma/ppc4xx/adma.c:982:25: sparse: expected struct xor_regs *xor_reg drivers/dma/ppc4xx/adma.c:982:25: sparse: got struct xor_regs [noderef] __iomem *xor_reg drivers/dma/ppc4xx/adma.c:983:34: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const [noderef] __iomem *addr @@ got unsigned int * @@ drivers/dma/ppc4xx/adma.c:983:34: sparse: expected void const [noderef] __iomem *addr drivers/dma/ppc4xx/adma.c:983:34: sparse: got unsigned int * drivers/dma/ppc4xx/adma.c:984:34: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void [noderef] __iomem *addr @@ got unsigned int * @@ drivers/dma/ppc4xx/adma.c:984:34: sparse: expected void [noderef] __iomem *addr drivers/dma/ppc4xx/adma.c:984:34: sparse: got unsigned int * drivers/dma/ppc4xx/adma.c:991:55: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const [noderef] __iomem *addr @@ got unsigned int * @@ drivers/dma/ppc4xx/adma.c:991:55: sparse: expected void const [noderef] __iomem *addr drivers/dma/ppc4xx/adma.c:991:55: sparse: got unsigned int * drivers/dma/ppc4xx/adma.c:993:51: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void [noderef] __iomem *addr @@ got unsigned int * @@ drivers/dma/ppc4xx/adma.c:993:51: sparse: expected void [noderef] __iomem *addr drivers/dma/ppc4xx/adma.c:993:51: sparse: got unsigned int * drivers/dma/ppc4xx/adma.c:995:51: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const [noderef] __iomem *addr @@ got unsigned int * @@ drivers/dma/ppc4xx/adma.c:995:51: sparse: expected void const [noderef] __iomem *addr drivers/dma/ppc4xx/adma.c:995:51: sparse: got unsigned int * drivers/dma/ppc4xx/adma.c:997:46: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void [noderef] __iomem *addr @@ got unsigned int * @@ drivers/dma/ppc4xx/adma.c:997:46: sparse: expected void [noderef] __iomem *addr drivers/dma/ppc4xx/adma.c:997:46: sparse: got unsigned int * drivers/dma/ppc4xx/adma.c:1006:35: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const [noderef] __iomem *addr @@ got unsigned int * @@ drivers/dma/ppc4xx/adma.c:1006:35: sparse: expected void const [noderef] __iomem *addr drivers/dma/ppc4xx/adma.c:1006:35: sparse: got unsigned int * drivers/dma/ppc4xx/adma.c:1025:25: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct dma_regs *dma_reg @@ got struct dma_regs [noderef] __iomem *dma_reg @@ drivers/dma/ppc4xx/adma.c:1025:25: sparse: expected struct dma_regs *dma_reg drivers/dma/ppc4xx/adma.c:1025:25: sparse: got struct dma_regs [noderef] __iomem *dma_reg drivers/dma/ppc4xx/adma.c:1029:31: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *addr @@ got unsigned short * @@ drivers/dma/ppc4xx/adma.c:1029:31: sparse: expected void const volatile [noderef] __iomem *addr drivers/dma/ppc4xx/adma.c:1029:31: sparse: got unsigned short * drivers/dma/ppc4xx/adma.c:1029:60: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *addr @@ got unsigned short * @@ drivers/dma/ppc4xx/adma.c:1029:60: sparse: expected void const volatile [noderef] __iomem *addr drivers/dma/ppc4xx/adma.c:1029:60: sparse: got unsigned short * drivers/dma/ppc4xx/adma.c:1030:31: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *addr @@ got unsigned short * @@ drivers/dma/ppc4xx/adma.c:1030:31: sparse: expected void const volatile [noderef] __iomem *addr drivers/dma/ppc4xx/adma.c:1030:31: sparse: got unsigned short * drivers/dma/ppc4xx/adma.c:1030:60: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *addr @@ got unsigned short * @@ drivers/dma/ppc4xx/adma.c:1030:60: sparse: expected void const volatile [noderef] __iomem *addr drivers/dma/ppc4xx/adma.c:1030:60: sparse: got unsigned short * drivers/dma/ppc4xx/adma.c:1036:25: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct xor_regs *xor_reg @@ got struct xor_regs [noderef] __iomem *xor_reg @@ drivers/dma/ppc4xx/adma.c:1036:25: sparse: expected struct xor_regs *xor_reg drivers/dma/ppc4xx/adma.c:1036:25: sparse: got struct xor_regs [noderef] __iomem *xor_reg drivers/dma/ppc4xx/adma.c:1037:37: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const [noderef] __iomem *addr @@ got unsigned int * @@ drivers/dma/ppc4xx/adma.c:1037:37: sparse: expected void const [noderef] __iomem *addr drivers/dma/ppc4xx/adma.c:1037:37: sparse: got unsigned int * drivers/dma/ppc4xx/adma.c:1051:48: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct xor_regs *xor_reg @@ got struct xor_regs [noderef] __iomem *xor_reg @@ drivers/dma/ppc4xx/adma.c:1051:48: sparse: expected struct xor_regs *xor_reg drivers/dma/ppc4xx/adma.c:1051:48: sparse: got struct xor_regs [noderef] __iomem *xor_reg drivers/dma/ppc4xx/adma.c:1053:25: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const [noderef] __iomem *addr @@ got unsigned int * @@ drivers/dma/ppc4xx/adma.c:1053:25: sparse: expected void const [noderef] __iomem *addr drivers/dma/ppc4xx/adma.c:1053:25: sparse: got unsigned int * drivers/dma/ppc4xx/adma.c:1060:41: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void [noderef] __iomem *addr @@ got unsigned int * @@ drivers/dma/ppc4xx/adma.c:1060:41: sparse: expected void [noderef] __iomem *addr drivers/dma/ppc4xx/adma.c:1060:41: sparse: got unsigned int * drivers/dma/ppc4xx/adma.c:1062:39: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void [noderef] __iomem *addr @@ got unsigned int * @@ drivers/dma/ppc4xx/adma.c:1062:39: sparse: expected void [noderef] __iomem *addr drivers/dma/ppc4xx/adma.c:1062:39: sparse: got unsigned int * drivers/dma/ppc4xx/adma.c:1063:25: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void [noderef] __iomem *addr @@ got unsigned int * @@ drivers/dma/ppc4xx/adma.c:1063:25: sparse: expected void [noderef] __iomem *addr drivers/dma/ppc4xx/adma.c:1063:25: sparse: got unsigned int * drivers/dma/ppc4xx/adma.c:1064:33: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const [noderef] __iomem *addr @@ got unsigned int * @@ drivers/dma/ppc4xx/adma.c:1064:33: sparse: expected void const [noderef] __iomem *addr drivers/dma/ppc4xx/adma.c:1064:33: sparse: got unsigned int * drivers/dma/ppc4xx/adma.c:1065:22: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void [noderef] __iomem *addr @@ got unsigned int * @@ drivers/dma/ppc4xx/adma.c:1065:22: sparse: expected void [noderef] __iomem *addr drivers/dma/ppc4xx/adma.c:1065:22: sparse: got unsigned int * drivers/dma/ppc4xx/adma.c:1078:48: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct dma_regs *dma_reg @@ got struct dma_regs [noderef] __iomem *dma_reg @@ drivers/dma/ppc4xx/adma.c:1078:48: sparse: expected struct dma_regs *dma_reg drivers/dma/ppc4xx/adma.c:1078:48: sparse: got struct dma_regs [noderef] __iomem *dma_reg drivers/dma/ppc4xx/adma.c:1088:26: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] __iomem *addr @@ got unsigned int * @@ drivers/dma/ppc4xx/adma.c:1088:26: sparse: expected void volatile [noderef] __iomem *addr drivers/dma/ppc4xx/adma.c:1088:26: sparse: got unsigned int * drivers/dma/ppc4xx/adma.c:1208:25: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct xor_regs *xor_reg @@ got struct xor_regs [noderef] __iomem *xor_reg @@ drivers/dma/ppc4xx/adma.c:1208:25: sparse: expected struct xor_regs *xor_reg drivers/dma/ppc4xx/adma.c:1208:25: sparse: got struct xor_regs [noderef] __iomem *xor_reg drivers/dma/ppc4xx/adma.c:1212:30: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void [noderef] __iomem *addr @@ got unsigned int * @@ drivers/dma/ppc4xx/adma.c:1212:30: sparse: expected void [noderef] __iomem *addr drivers/dma/ppc4xx/adma.c:1212:30: sparse: got unsigned int * drivers/dma/ppc4xx/adma.c:2775:62: sparse: sparse: Using plain integer as NULL pointer drivers/dma/ppc4xx/adma.c:4092:14: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected void *regs @@ got void [noderef] __iomem * @@ drivers/dma/ppc4xx/adma.c:4092:14: sparse: expected void *regs drivers/dma/ppc4xx/adma.c:4092:14: sparse: got void [noderef] __iomem * drivers/dma/ppc4xx/adma.c:4100:31: sparse: expected struct xor_regs [noderef] __iomem *xor_reg drivers/dma/ppc4xx/adma.c:4100:31: sparse: got void *regs drivers/dma/ppc4xx/adma.c:4107:31: sparse: expected struct dma_regs [noderef] __iomem *dma_reg drivers/dma/ppc4xx/adma.c:4107:31: sparse: got void *regs vim +4100 drivers/dma/ppc4xx/adma.c 12458ea06efd7b Anatolij Gustschin 2009-12-11 4001 12458ea06efd7b Anatolij Gustschin 2009-12-11 4002 /** 12458ea06efd7b Anatolij Gustschin 2009-12-11 4003 * ppc440spe_adma_probe - probe the asynch device 12458ea06efd7b Anatolij Gustschin 2009-12-11 4004 */ 463a1f8b3ceebe Bill Pemberton 2012-11-19 4005 static int ppc440spe_adma_probe(struct platform_device *ofdev) 12458ea06efd7b Anatolij Gustschin 2009-12-11 4006 { 05c02542c20aa0 Anatolij Gustschin 2010-06-03 4007 struct device_node *np = ofdev->dev.of_node; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4008 struct resource res; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4009 struct ppc440spe_adma_device *adev; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4010 struct ppc440spe_adma_chan *chan; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4011 struct ppc_dma_chan_ref *ref, *_ref; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4012 int ret = 0, initcode = PPC_ADMA_INIT_OK; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4013 const u32 *idx; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4014 int len; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4015 void *regs; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4016 u32 id, pool_size; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4017 12458ea06efd7b Anatolij Gustschin 2009-12-11 4018 if (of_device_is_compatible(np, "amcc,xor-accelerator")) { 12458ea06efd7b Anatolij Gustschin 2009-12-11 4019 id = PPC440SPE_XOR_ID; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4020 /* As far as the XOR engine is concerned, it does not 12458ea06efd7b Anatolij Gustschin 2009-12-11 4021 * use FIFOs but uses linked list. So there is no dependency 12458ea06efd7b Anatolij Gustschin 2009-12-11 4022 * between pool size to allocate and the engine configuration. 12458ea06efd7b Anatolij Gustschin 2009-12-11 4023 */ 12458ea06efd7b Anatolij Gustschin 2009-12-11 4024 pool_size = PAGE_SIZE << 1; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4025 } else { 12458ea06efd7b Anatolij Gustschin 2009-12-11 4026 /* it is DMA0 or DMA1 */ 12458ea06efd7b Anatolij Gustschin 2009-12-11 4027 idx = of_get_property(np, "cell-index", &len); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4028 if (!idx || (len != sizeof(u32))) { c6c93048baff25 Rob Herring 2017-07-18 4029 dev_err(&ofdev->dev, "Device node %pOF has missing " 12458ea06efd7b Anatolij Gustschin 2009-12-11 4030 "or invalid cell-index property\n", c6c93048baff25 Rob Herring 2017-07-18 4031 np); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4032 return -EINVAL; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4033 } 12458ea06efd7b Anatolij Gustschin 2009-12-11 4034 id = *idx; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4035 /* DMA0,1 engines use FIFO to maintain CDBs, so we 12458ea06efd7b Anatolij Gustschin 2009-12-11 4036 * should allocate the pool accordingly to size of this 12458ea06efd7b Anatolij Gustschin 2009-12-11 4037 * FIFO. Thus, the pool size depends on the FIFO depth: 12458ea06efd7b Anatolij Gustschin 2009-12-11 4038 * how much CDBs pointers the FIFO may contain then so 12458ea06efd7b Anatolij Gustschin 2009-12-11 4039 * much CDBs we should provide in the pool. 12458ea06efd7b Anatolij Gustschin 2009-12-11 4040 * That is 12458ea06efd7b Anatolij Gustschin 2009-12-11 4041 * CDB size = 32B; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4042 * CDBs number = (DMA0_FIFO_SIZE >> 3); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4043 * Pool size = CDBs number * CDB size = 12458ea06efd7b Anatolij Gustschin 2009-12-11 4044 * = (DMA0_FIFO_SIZE >> 3) << 5 = DMA0_FIFO_SIZE << 2. 12458ea06efd7b Anatolij Gustschin 2009-12-11 4045 */ 12458ea06efd7b Anatolij Gustschin 2009-12-11 4046 pool_size = (id == PPC440SPE_DMA0_ID) ? 12458ea06efd7b Anatolij Gustschin 2009-12-11 4047 DMA0_FIFO_SIZE : DMA1_FIFO_SIZE; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4048 pool_size <<= 2; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4049 } 12458ea06efd7b Anatolij Gustschin 2009-12-11 4050 12458ea06efd7b Anatolij Gustschin 2009-12-11 4051 if (of_address_to_resource(np, 0, &res)) { 12458ea06efd7b Anatolij Gustschin 2009-12-11 4052 dev_err(&ofdev->dev, "failed to get memory resource\n"); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4053 initcode = PPC_ADMA_INIT_MEMRES; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4054 ret = -ENODEV; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4055 goto out; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4056 } 12458ea06efd7b Anatolij Gustschin 2009-12-11 4057 12458ea06efd7b Anatolij Gustschin 2009-12-11 4058 if (!request_mem_region(res.start, resource_size(&res), 12458ea06efd7b Anatolij Gustschin 2009-12-11 4059 dev_driver_string(&ofdev->dev))) { a584bff5efae8c Joe Perches 2010-11-12 4060 dev_err(&ofdev->dev, "failed to request memory region %pR\n", a584bff5efae8c Joe Perches 2010-11-12 4061 &res); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4062 initcode = PPC_ADMA_INIT_MEMREG; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4063 ret = -EBUSY; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4064 goto out; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4065 } 12458ea06efd7b Anatolij Gustschin 2009-12-11 4066 12458ea06efd7b Anatolij Gustschin 2009-12-11 4067 /* create a device */ 12458ea06efd7b Anatolij Gustschin 2009-12-11 4068 adev = kzalloc(sizeof(*adev), GFP_KERNEL); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4069 if (!adev) { 12458ea06efd7b Anatolij Gustschin 2009-12-11 4070 initcode = PPC_ADMA_INIT_ALLOC; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4071 ret = -ENOMEM; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4072 goto err_adev_alloc; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4073 } 12458ea06efd7b Anatolij Gustschin 2009-12-11 4074 12458ea06efd7b Anatolij Gustschin 2009-12-11 4075 adev->id = id; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4076 adev->pool_size = pool_size; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4077 /* allocate coherent memory for hardware descriptors */ 12458ea06efd7b Anatolij Gustschin 2009-12-11 4078 adev->dma_desc_pool_virt = dma_alloc_coherent(&ofdev->dev, 12458ea06efd7b Anatolij Gustschin 2009-12-11 4079 adev->pool_size, &adev->dma_desc_pool, 12458ea06efd7b Anatolij Gustschin 2009-12-11 4080 GFP_KERNEL); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4081 if (adev->dma_desc_pool_virt == NULL) { 12458ea06efd7b Anatolij Gustschin 2009-12-11 4082 dev_err(&ofdev->dev, "failed to allocate %d bytes of coherent " 12458ea06efd7b Anatolij Gustschin 2009-12-11 4083 "memory for hardware descriptors\n", 12458ea06efd7b Anatolij Gustschin 2009-12-11 4084 adev->pool_size); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4085 initcode = PPC_ADMA_INIT_COHERENT; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4086 ret = -ENOMEM; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4087 goto err_dma_alloc; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4088 } d73111c6d43f08 Masanari Iida 2012-08-04 4089 dev_dbg(&ofdev->dev, "allocated descriptor pool virt 0x%p phys 0x%llx\n", 12458ea06efd7b Anatolij Gustschin 2009-12-11 4090 adev->dma_desc_pool_virt, (u64)adev->dma_desc_pool); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4091 12458ea06efd7b Anatolij Gustschin 2009-12-11 4092 regs = ioremap(res.start, resource_size(&res)); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4093 if (!regs) { 12458ea06efd7b Anatolij Gustschin 2009-12-11 4094 dev_err(&ofdev->dev, "failed to ioremap regs!\n"); f3b77727e82722 Julia Lawall 2013-12-29 4095 ret = -ENOMEM; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4096 goto err_regs_alloc; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4097 } 12458ea06efd7b Anatolij Gustschin 2009-12-11 4098 12458ea06efd7b Anatolij Gustschin 2009-12-11 4099 if (adev->id == PPC440SPE_XOR_ID) { 12458ea06efd7b Anatolij Gustschin 2009-12-11 @4100 adev->xor_reg = regs; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4101 /* Reset XOR */ 12458ea06efd7b Anatolij Gustschin 2009-12-11 4102 iowrite32be(XOR_CRSR_XASR_BIT, &adev->xor_reg->crsr); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4103 iowrite32be(XOR_CRSR_64BA_BIT, &adev->xor_reg->crrr); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4104 } else { 12458ea06efd7b Anatolij Gustschin 2009-12-11 4105 size_t fifo_size = (adev->id == PPC440SPE_DMA0_ID) ? 12458ea06efd7b Anatolij Gustschin 2009-12-11 4106 DMA0_FIFO_SIZE : DMA1_FIFO_SIZE; 12458ea06efd7b Anatolij Gustschin 2009-12-11 @4107 adev->dma_reg = regs; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4108 /* DMAx_FIFO_SIZE is defined in bytes, 12458ea06efd7b Anatolij Gustschin 2009-12-11 4109 * <fsiz> - is defined in number of CDB pointers (8byte). 12458ea06efd7b Anatolij Gustschin 2009-12-11 4110 * DMA FIFO Length = CSlength + CPlength, where 12458ea06efd7b Anatolij Gustschin 2009-12-11 4111 * CSlength = CPlength = (fsiz + 1) * 8. 12458ea06efd7b Anatolij Gustschin 2009-12-11 4112 */ 12458ea06efd7b Anatolij Gustschin 2009-12-11 4113 iowrite32(DMA_FIFO_ENABLE | ((fifo_size >> 3) - 2), 12458ea06efd7b Anatolij Gustschin 2009-12-11 4114 &adev->dma_reg->fsiz); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4115 /* Configure DMA engine */ 12458ea06efd7b Anatolij Gustschin 2009-12-11 4116 iowrite32(DMA_CFG_DXEPR_HP | DMA_CFG_DFMPP_HP | DMA_CFG_FALGN, 12458ea06efd7b Anatolij Gustschin 2009-12-11 4117 &adev->dma_reg->cfg); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4118 /* Clear Status */ 12458ea06efd7b Anatolij Gustschin 2009-12-11 4119 iowrite32(~0, &adev->dma_reg->dsts); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4120 } 12458ea06efd7b Anatolij Gustschin 2009-12-11 4121 12458ea06efd7b Anatolij Gustschin 2009-12-11 4122 adev->dev = &ofdev->dev; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4123 adev->common.dev = &ofdev->dev; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4124 INIT_LIST_HEAD(&adev->common.channels); dd3daca162f741 Jingoo Han 2013-05-24 4125 platform_set_drvdata(ofdev, adev); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4126 12458ea06efd7b Anatolij Gustschin 2009-12-11 4127 /* create a channel */ 12458ea06efd7b Anatolij Gustschin 2009-12-11 4128 chan = kzalloc(sizeof(*chan), GFP_KERNEL); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4129 if (!chan) { 12458ea06efd7b Anatolij Gustschin 2009-12-11 4130 initcode = PPC_ADMA_INIT_CHANNEL; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4131 ret = -ENOMEM; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4132 goto err_chan_alloc; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4133 } 12458ea06efd7b Anatolij Gustschin 2009-12-11 4134 12458ea06efd7b Anatolij Gustschin 2009-12-11 4135 spin_lock_init(&chan->lock); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4136 INIT_LIST_HEAD(&chan->chain); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4137 INIT_LIST_HEAD(&chan->all_slots); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4138 chan->device = adev; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4139 chan->common.device = &adev->common; 8ac695463f37af Russell King - ARM Linux 2012-03-06 4140 dma_cookie_init(&chan->common); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4141 list_add_tail(&chan->common.device_node, &adev->common.channels); 7f8281765f9949 Allen Pais 2020-08-31 4142 tasklet_setup(&chan->irq_tasklet, ppc440spe_adma_tasklet); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4143 12458ea06efd7b Anatolij Gustschin 2009-12-11 4144 /* allocate and map helper pages for async validation or 12458ea06efd7b Anatolij Gustschin 2009-12-11 4145 * async_mult/async_sum_product operations on DMA0/1. 12458ea06efd7b Anatolij Gustschin 2009-12-11 4146 */ 12458ea06efd7b Anatolij Gustschin 2009-12-11 4147 if (adev->id != PPC440SPE_XOR_ID) { 12458ea06efd7b Anatolij Gustschin 2009-12-11 4148 chan->pdest_page = alloc_page(GFP_KERNEL); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4149 chan->qdest_page = alloc_page(GFP_KERNEL); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4150 if (!chan->pdest_page || 12458ea06efd7b Anatolij Gustschin 2009-12-11 4151 !chan->qdest_page) { 12458ea06efd7b Anatolij Gustschin 2009-12-11 4152 if (chan->pdest_page) 12458ea06efd7b Anatolij Gustschin 2009-12-11 4153 __free_page(chan->pdest_page); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4154 if (chan->qdest_page) 12458ea06efd7b Anatolij Gustschin 2009-12-11 4155 __free_page(chan->qdest_page); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4156 ret = -ENOMEM; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4157 goto err_page_alloc; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4158 } 12458ea06efd7b Anatolij Gustschin 2009-12-11 4159 chan->pdest = dma_map_page(&ofdev->dev, chan->pdest_page, 0, 12458ea06efd7b Anatolij Gustschin 2009-12-11 4160 PAGE_SIZE, DMA_BIDIRECTIONAL); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4161 chan->qdest = dma_map_page(&ofdev->dev, chan->qdest_page, 0, 12458ea06efd7b Anatolij Gustschin 2009-12-11 4162 PAGE_SIZE, DMA_BIDIRECTIONAL); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4163 } 12458ea06efd7b Anatolij Gustschin 2009-12-11 4164 12458ea06efd7b Anatolij Gustschin 2009-12-11 4165 ref = kmalloc(sizeof(*ref), GFP_KERNEL); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4166 if (ref) { 12458ea06efd7b Anatolij Gustschin 2009-12-11 4167 ref->chan = &chan->common; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4168 INIT_LIST_HEAD(&ref->node); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4169 list_add_tail(&ref->node, &ppc440spe_adma_chan_list); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4170 } else { 12458ea06efd7b Anatolij Gustschin 2009-12-11 4171 dev_err(&ofdev->dev, "failed to allocate channel reference!\n"); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4172 ret = -ENOMEM; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4173 goto err_ref_alloc; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4174 } 12458ea06efd7b Anatolij Gustschin 2009-12-11 4175 12458ea06efd7b Anatolij Gustschin 2009-12-11 4176 ret = ppc440spe_adma_setup_irqs(adev, chan, &initcode); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4177 if (ret) 12458ea06efd7b Anatolij Gustschin 2009-12-11 4178 goto err_irq; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4179 12458ea06efd7b Anatolij Gustschin 2009-12-11 4180 ppc440spe_adma_init_capabilities(adev); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4181 12458ea06efd7b Anatolij Gustschin 2009-12-11 4182 ret = dma_async_device_register(&adev->common); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4183 if (ret) { 12458ea06efd7b Anatolij Gustschin 2009-12-11 4184 initcode = PPC_ADMA_INIT_REGISTER; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4185 dev_err(&ofdev->dev, "failed to register dma device\n"); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4186 goto err_dev_reg; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4187 } 12458ea06efd7b Anatolij Gustschin 2009-12-11 4188 12458ea06efd7b Anatolij Gustschin 2009-12-11 4189 goto out; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4190 12458ea06efd7b Anatolij Gustschin 2009-12-11 4191 err_dev_reg: 12458ea06efd7b Anatolij Gustschin 2009-12-11 4192 ppc440spe_adma_release_irqs(adev, chan); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4193 err_irq: 12458ea06efd7b Anatolij Gustschin 2009-12-11 4194 list_for_each_entry_safe(ref, _ref, &ppc440spe_adma_chan_list, node) { 12458ea06efd7b Anatolij Gustschin 2009-12-11 4195 if (chan == to_ppc440spe_adma_chan(ref->chan)) { 12458ea06efd7b Anatolij Gustschin 2009-12-11 4196 list_del(&ref->node); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4197 kfree(ref); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4198 } 12458ea06efd7b Anatolij Gustschin 2009-12-11 4199 } 12458ea06efd7b Anatolij Gustschin 2009-12-11 4200 err_ref_alloc: 12458ea06efd7b Anatolij Gustschin 2009-12-11 4201 if (adev->id != PPC440SPE_XOR_ID) { 12458ea06efd7b Anatolij Gustschin 2009-12-11 4202 dma_unmap_page(&ofdev->dev, chan->pdest, 12458ea06efd7b Anatolij Gustschin 2009-12-11 4203 PAGE_SIZE, DMA_BIDIRECTIONAL); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4204 dma_unmap_page(&ofdev->dev, chan->qdest, 12458ea06efd7b Anatolij Gustschin 2009-12-11 4205 PAGE_SIZE, DMA_BIDIRECTIONAL); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4206 __free_page(chan->pdest_page); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4207 __free_page(chan->qdest_page); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4208 } 12458ea06efd7b Anatolij Gustschin 2009-12-11 4209 err_page_alloc: 12458ea06efd7b Anatolij Gustschin 2009-12-11 4210 kfree(chan); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4211 err_chan_alloc: 12458ea06efd7b Anatolij Gustschin 2009-12-11 4212 if (adev->id == PPC440SPE_XOR_ID) 12458ea06efd7b Anatolij Gustschin 2009-12-11 4213 iounmap(adev->xor_reg); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4214 else 12458ea06efd7b Anatolij Gustschin 2009-12-11 4215 iounmap(adev->dma_reg); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4216 err_regs_alloc: 12458ea06efd7b Anatolij Gustschin 2009-12-11 4217 dma_free_coherent(adev->dev, adev->pool_size, 12458ea06efd7b Anatolij Gustschin 2009-12-11 4218 adev->dma_desc_pool_virt, 12458ea06efd7b Anatolij Gustschin 2009-12-11 4219 adev->dma_desc_pool); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4220 err_dma_alloc: 12458ea06efd7b Anatolij Gustschin 2009-12-11 4221 kfree(adev); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4222 err_adev_alloc: 12458ea06efd7b Anatolij Gustschin 2009-12-11 4223 release_mem_region(res.start, resource_size(&res)); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4224 out: 12458ea06efd7b Anatolij Gustschin 2009-12-11 4225 if (id < PPC440SPE_ADMA_ENGINES_NUM) 12458ea06efd7b Anatolij Gustschin 2009-12-11 4226 ppc440spe_adma_devices[id] = initcode; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4227 12458ea06efd7b Anatolij Gustschin 2009-12-11 4228 return ret; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4229 } 12458ea06efd7b Anatolij Gustschin 2009-12-11 4230 :::::: The code at line 4100 was first introduced by commit :::::: 12458ea06efd7b44281e68fe59c950ec7d59c649 ppc440spe-adma: adds updated ppc440spe adma driver :::::: TO: Anatolij Gustschin <agust(a)denx.de&gt; :::::: CC: Dan Williams <dan.j.williams(a)intel.com&gt; 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