tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 2f1d5c77f13fe64497c2e2601605f7d7ec4da9b1 commit: 68f35add4ba4c850a33878633e10c02d7ba32d84 [1782/12085] dmaengine: ppc4xx: make ppc440spe_adma_chan_list static config: powerpc64-randconfig-s032-20201209 (attached as .config) compiler: powerpc-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: v0.6.3-179-ga00755aa-dirty # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=68f35add4ba4c850a33878633e10c02d7ba32d84 git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git git fetch --no-tags linux-next master git checkout 68f35add4ba4c850a33878633e10c02d7ba32d84 # 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=powerpc64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> "sparse warnings: (new ones prefixed by >>)" drivers/dma/ppc4xx/adma.c:1159:38: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void [noderef] __iomem * @@ got unsigned int * @@ drivers/dma/ppc4xx/adma.c:1159:38: sparse: expected void [noderef] __iomem * drivers/dma/ppc4xx/adma.c:1159:38: sparse: got unsigned int * drivers/dma/ppc4xx/adma.c:911:25: 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:911:25: sparse: expected struct dma_regs *dma_reg drivers/dma/ppc4xx/adma.c:911:25: sparse: got struct dma_regs [noderef] __iomem *dma_reg drivers/dma/ppc4xx/adma.c:912:40: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const [noderef] __iomem * @@ got unsigned int * @@ drivers/dma/ppc4xx/adma.c:912:40: sparse: expected void const [noderef] __iomem * drivers/dma/ppc4xx/adma.c:912:40: sparse: got unsigned int * drivers/dma/ppc4xx/adma.c:929:37: sparse: sparse: cast to restricted __le32 drivers/dma/ppc4xx/adma.c:929:37: sparse: sparse: cast to restricted __le32 drivers/dma/ppc4xx/adma.c:929:37: sparse: sparse: cast to restricted __le32 drivers/dma/ppc4xx/adma.c:929:37: sparse: sparse: cast to restricted __le32 drivers/dma/ppc4xx/adma.c:929:37: sparse: sparse: cast to restricted __le32 drivers/dma/ppc4xx/adma.c:929:37: sparse: sparse: cast to restricted __le32 drivers/dma/ppc4xx/adma.c:974:32: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const [noderef] __iomem * @@ got unsigned int * @@ drivers/dma/ppc4xx/adma.c:974:32: sparse: expected void const [noderef] __iomem * drivers/dma/ppc4xx/adma.c:974:32: sparse: got unsigned int * drivers/dma/ppc4xx/adma.c:979:40: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void [noderef] __iomem * @@ got unsigned int * @@ drivers/dma/ppc4xx/adma.c:979:40: sparse: expected void [noderef] __iomem * drivers/dma/ppc4xx/adma.c:979:40: sparse: got unsigned int * drivers/dma/ppc4xx/adma.c:984:25: 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:984:25: sparse: expected struct xor_regs *xor_reg drivers/dma/ppc4xx/adma.c:984:25: sparse: got struct xor_regs [noderef] __iomem *xor_reg drivers/dma/ppc4xx/adma.c:985:34: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const [noderef] __iomem * @@ got unsigned int * @@ drivers/dma/ppc4xx/adma.c:985:34: sparse: expected void const [noderef] __iomem * drivers/dma/ppc4xx/adma.c:985:34: sparse: got unsigned int * drivers/dma/ppc4xx/adma.c:986:34: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void [noderef] __iomem * @@ got unsigned int * @@ drivers/dma/ppc4xx/adma.c:986:34: sparse: expected void [noderef] __iomem * drivers/dma/ppc4xx/adma.c:986:34: sparse: got unsigned int * drivers/dma/ppc4xx/adma.c:993:55: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const [noderef] __iomem * @@ got unsigned int * @@ drivers/dma/ppc4xx/adma.c:993:55: sparse: expected void const [noderef] __iomem * drivers/dma/ppc4xx/adma.c:993:55: sparse: got unsigned int * drivers/dma/ppc4xx/adma.c:995:51: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void [noderef] __iomem * @@ got unsigned int * @@ drivers/dma/ppc4xx/adma.c:995:51: sparse: expected void [noderef] __iomem * drivers/dma/ppc4xx/adma.c:995:51: sparse: got unsigned int * drivers/dma/ppc4xx/adma.c:997:51: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const [noderef] __iomem * @@ got unsigned int * @@ drivers/dma/ppc4xx/adma.c:997:51: sparse: expected void const [noderef] __iomem * drivers/dma/ppc4xx/adma.c:997:51: sparse: got unsigned int * drivers/dma/ppc4xx/adma.c:999:46: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void [noderef] __iomem * @@ got unsigned int * @@ drivers/dma/ppc4xx/adma.c:999:46: sparse: expected void [noderef] __iomem * drivers/dma/ppc4xx/adma.c:999:46: sparse: got unsigned int * drivers/dma/ppc4xx/adma.c:1008:35: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const [noderef] __iomem * @@ got unsigned int * @@ drivers/dma/ppc4xx/adma.c:1008:35: sparse: expected void const [noderef] __iomem * drivers/dma/ppc4xx/adma.c:1008:35: sparse: got unsigned int * drivers/dma/ppc4xx/adma.c:1027:25: 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:1027:25: sparse: expected struct dma_regs *dma_reg drivers/dma/ppc4xx/adma.c:1027:25: sparse: got struct dma_regs [noderef] __iomem *dma_reg drivers/dma/ppc4xx/adma.c:1031:31: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const [noderef] __iomem * @@ got unsigned short * @@ drivers/dma/ppc4xx/adma.c:1031:31: sparse: expected void const [noderef] __iomem * drivers/dma/ppc4xx/adma.c:1031:31: sparse: got unsigned short * drivers/dma/ppc4xx/adma.c:1031:60: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const [noderef] __iomem * @@ got unsigned short * @@ drivers/dma/ppc4xx/adma.c:1031:60: sparse: expected void const [noderef] __iomem * drivers/dma/ppc4xx/adma.c:1031:60: sparse: got unsigned short * drivers/dma/ppc4xx/adma.c:1032:31: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const [noderef] __iomem * @@ got unsigned short * @@ drivers/dma/ppc4xx/adma.c:1032:31: sparse: expected void const [noderef] __iomem * drivers/dma/ppc4xx/adma.c:1032:31: sparse: got unsigned short * drivers/dma/ppc4xx/adma.c:1032:60: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const [noderef] __iomem * @@ got unsigned short * @@ drivers/dma/ppc4xx/adma.c:1032:60: sparse: expected void const [noderef] __iomem * drivers/dma/ppc4xx/adma.c:1032:60: sparse: got unsigned short * drivers/dma/ppc4xx/adma.c:1038:25: 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:1038:25: sparse: expected struct xor_regs *xor_reg drivers/dma/ppc4xx/adma.c:1038:25: sparse: got struct xor_regs [noderef] __iomem *xor_reg drivers/dma/ppc4xx/adma.c:1039:37: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const [noderef] __iomem * @@ got unsigned int * @@ drivers/dma/ppc4xx/adma.c:1039:37: sparse: expected void const [noderef] __iomem * drivers/dma/ppc4xx/adma.c:1039:37: sparse: got unsigned int * drivers/dma/ppc4xx/adma.c:1053:48: 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:1053:48: sparse: expected struct xor_regs *xor_reg drivers/dma/ppc4xx/adma.c:1053:48: sparse: got struct xor_regs [noderef] __iomem *xor_reg drivers/dma/ppc4xx/adma.c:1055:25: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const [noderef] __iomem * @@ got unsigned int * @@ drivers/dma/ppc4xx/adma.c:1055:25: sparse: expected void const [noderef] __iomem * drivers/dma/ppc4xx/adma.c:1055:25: sparse: got unsigned int * drivers/dma/ppc4xx/adma.c:1062:41: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void [noderef] __iomem * @@ got unsigned int * @@ drivers/dma/ppc4xx/adma.c:1062:41: sparse: expected void [noderef] __iomem * drivers/dma/ppc4xx/adma.c:1062:41: sparse: got unsigned int * drivers/dma/ppc4xx/adma.c:1064:39: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void [noderef] __iomem * @@ got unsigned int * @@ drivers/dma/ppc4xx/adma.c:1064:39: sparse: expected void [noderef] __iomem * drivers/dma/ppc4xx/adma.c:1064:39: sparse: got unsigned int * drivers/dma/ppc4xx/adma.c:1065:25: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void [noderef] __iomem * @@ got unsigned int * @@ drivers/dma/ppc4xx/adma.c:1065:25: sparse: expected void [noderef] __iomem * drivers/dma/ppc4xx/adma.c:1065:25: sparse: got unsigned int * drivers/dma/ppc4xx/adma.c:1066:33: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const [noderef] __iomem * @@ got unsigned int * @@ drivers/dma/ppc4xx/adma.c:1066:33: sparse: expected void const [noderef] __iomem * drivers/dma/ppc4xx/adma.c:1066:33: sparse: got unsigned int * drivers/dma/ppc4xx/adma.c:1067:22: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void [noderef] __iomem * @@ got unsigned int * @@ drivers/dma/ppc4xx/adma.c:1067:22: sparse: expected void [noderef] __iomem * drivers/dma/ppc4xx/adma.c:1067:22: sparse: got unsigned int * drivers/dma/ppc4xx/adma.c:1080:48: 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:1080:48: sparse: expected struct dma_regs *dma_reg drivers/dma/ppc4xx/adma.c:1080:48: sparse: got struct dma_regs [noderef] __iomem *dma_reg drivers/dma/ppc4xx/adma.c:1090:26: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void [noderef] __iomem * @@ got unsigned int * @@ drivers/dma/ppc4xx/adma.c:1090:26: sparse: expected void [noderef] __iomem * drivers/dma/ppc4xx/adma.c:1090:26: sparse: got unsigned int * drivers/dma/ppc4xx/adma.c:1210:25: 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:1210:25: sparse: expected struct xor_regs *xor_reg drivers/dma/ppc4xx/adma.c:1210:25: sparse: got struct xor_regs [noderef] __iomem *xor_reg drivers/dma/ppc4xx/adma.c:1214:30: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void [noderef] __iomem * @@ got unsigned int * @@ drivers/dma/ppc4xx/adma.c:1214:30: sparse: expected void [noderef] __iomem * drivers/dma/ppc4xx/adma.c:1214:30: sparse: got unsigned int * drivers/dma/ppc4xx/adma.c:2777:62: sparse: sparse: Using plain integer as NULL pointer >> drivers/dma/ppc4xx/adma.c:4094:14: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected void *regs @@ got void [noderef] __iomem * @@ drivers/dma/ppc4xx/adma.c:4094:14: sparse: expected void *regs drivers/dma/ppc4xx/adma.c:4094:14: sparse: got void [noderef] __iomem * drivers/dma/ppc4xx/adma.c:4102:31: sparse: sparse: too many warnings vim +4094 drivers/dma/ppc4xx/adma.c 12458ea06efd7b Anatolij Gustschin 2009-12-11 4003 12458ea06efd7b Anatolij Gustschin 2009-12-11 4004 /** 12458ea06efd7b Anatolij Gustschin 2009-12-11 4005 * ppc440spe_adma_probe - probe the asynch device 12458ea06efd7b Anatolij Gustschin 2009-12-11 4006 */ 463a1f8b3ceebe Bill Pemberton 2012-11-19 4007 static int ppc440spe_adma_probe(struct platform_device *ofdev) 12458ea06efd7b Anatolij Gustschin 2009-12-11 4008 { 05c02542c20aa0 Anatolij Gustschin 2010-06-03 4009 struct device_node *np = ofdev->dev.of_node; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4010 struct resource res; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4011 struct ppc440spe_adma_device *adev; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4012 struct ppc440spe_adma_chan *chan; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4013 struct ppc_dma_chan_ref *ref, *_ref; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4014 int ret = 0, initcode = PPC_ADMA_INIT_OK; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4015 const u32 *idx; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4016 int len; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4017 void *regs; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4018 u32 id, pool_size; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4019 12458ea06efd7b Anatolij Gustschin 2009-12-11 4020 if (of_device_is_compatible(np, "amcc,xor-accelerator")) { 12458ea06efd7b Anatolij Gustschin 2009-12-11 4021 id = PPC440SPE_XOR_ID; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4022 /* As far as the XOR engine is concerned, it does not 12458ea06efd7b Anatolij Gustschin 2009-12-11 4023 * use FIFOs but uses linked list. So there is no dependency 12458ea06efd7b Anatolij Gustschin 2009-12-11 4024 * between pool size to allocate and the engine configuration. 12458ea06efd7b Anatolij Gustschin 2009-12-11 4025 */ 12458ea06efd7b Anatolij Gustschin 2009-12-11 4026 pool_size = PAGE_SIZE << 1; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4027 } else { 12458ea06efd7b Anatolij Gustschin 2009-12-11 4028 /* it is DMA0 or DMA1 */ 12458ea06efd7b Anatolij Gustschin 2009-12-11 4029 idx = of_get_property(np, "cell-index", &len); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4030 if (!idx || (len != sizeof(u32))) { c6c93048baff25 Rob Herring 2017-07-18 4031 dev_err(&ofdev->dev, "Device node %pOF has missing " 12458ea06efd7b Anatolij Gustschin 2009-12-11 4032 "or invalid cell-index property\n", c6c93048baff25 Rob Herring 2017-07-18 4033 np); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4034 return -EINVAL; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4035 } 12458ea06efd7b Anatolij Gustschin 2009-12-11 4036 id = *idx; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4037 /* DMA0,1 engines use FIFO to maintain CDBs, so we 12458ea06efd7b Anatolij Gustschin 2009-12-11 4038 * should allocate the pool accordingly to size of this 12458ea06efd7b Anatolij Gustschin 2009-12-11 4039 * FIFO. Thus, the pool size depends on the FIFO depth: 12458ea06efd7b Anatolij Gustschin 2009-12-11 4040 * how much CDBs pointers the FIFO may contain then so 12458ea06efd7b Anatolij Gustschin 2009-12-11 4041 * much CDBs we should provide in the pool. 12458ea06efd7b Anatolij Gustschin 2009-12-11 4042 * That is 12458ea06efd7b Anatolij Gustschin 2009-12-11 4043 * CDB size = 32B; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4044 * CDBs number = (DMA0_FIFO_SIZE >> 3); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4045 * Pool size = CDBs number * CDB size = 12458ea06efd7b Anatolij Gustschin 2009-12-11 4046 * = (DMA0_FIFO_SIZE >> 3) << 5 = DMA0_FIFO_SIZE << 2. 12458ea06efd7b Anatolij Gustschin 2009-12-11 4047 */ 12458ea06efd7b Anatolij Gustschin 2009-12-11 4048 pool_size = (id == PPC440SPE_DMA0_ID) ? 12458ea06efd7b Anatolij Gustschin 2009-12-11 4049 DMA0_FIFO_SIZE : DMA1_FIFO_SIZE; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4050 pool_size <<= 2; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4051 } 12458ea06efd7b Anatolij Gustschin 2009-12-11 4052 12458ea06efd7b Anatolij Gustschin 2009-12-11 4053 if (of_address_to_resource(np, 0, &res)) { 12458ea06efd7b Anatolij Gustschin 2009-12-11 4054 dev_err(&ofdev->dev, "failed to get memory resource\n"); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4055 initcode = PPC_ADMA_INIT_MEMRES; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4056 ret = -ENODEV; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4057 goto out; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4058 } 12458ea06efd7b Anatolij Gustschin 2009-12-11 4059 12458ea06efd7b Anatolij Gustschin 2009-12-11 4060 if (!request_mem_region(res.start, resource_size(&res), 12458ea06efd7b Anatolij Gustschin 2009-12-11 4061 dev_driver_string(&ofdev->dev))) { a584bff5efae8c Joe Perches 2010-11-12 4062 dev_err(&ofdev->dev, "failed to request memory region %pR\n", a584bff5efae8c Joe Perches 2010-11-12 4063 &res); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4064 initcode = PPC_ADMA_INIT_MEMREG; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4065 ret = -EBUSY; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4066 goto out; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4067 } 12458ea06efd7b Anatolij Gustschin 2009-12-11 4068 12458ea06efd7b Anatolij Gustschin 2009-12-11 4069 /* create a device */ 12458ea06efd7b Anatolij Gustschin 2009-12-11 4070 adev = kzalloc(sizeof(*adev), GFP_KERNEL); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4071 if (!adev) { 12458ea06efd7b Anatolij Gustschin 2009-12-11 4072 initcode = PPC_ADMA_INIT_ALLOC; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4073 ret = -ENOMEM; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4074 goto err_adev_alloc; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4075 } 12458ea06efd7b Anatolij Gustschin 2009-12-11 4076 12458ea06efd7b Anatolij Gustschin 2009-12-11 4077 adev->id = id; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4078 adev->pool_size = pool_size; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4079 /* allocate coherent memory for hardware descriptors */ 12458ea06efd7b Anatolij Gustschin 2009-12-11 4080 adev->dma_desc_pool_virt = dma_alloc_coherent(&ofdev->dev, 12458ea06efd7b Anatolij Gustschin 2009-12-11 4081 adev->pool_size, &adev->dma_desc_pool, 12458ea06efd7b Anatolij Gustschin 2009-12-11 4082 GFP_KERNEL); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4083 if (adev->dma_desc_pool_virt == NULL) { 12458ea06efd7b Anatolij Gustschin 2009-12-11 4084 dev_err(&ofdev->dev, "failed to allocate %d bytes of coherent " 12458ea06efd7b Anatolij Gustschin 2009-12-11 4085 "memory for hardware descriptors\n", 12458ea06efd7b Anatolij Gustschin 2009-12-11 4086 adev->pool_size); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4087 initcode = PPC_ADMA_INIT_COHERENT; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4088 ret = -ENOMEM; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4089 goto err_dma_alloc; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4090 } d73111c6d43f08 Masanari Iida 2012-08-04 4091 dev_dbg(&ofdev->dev, "allocated descriptor pool virt 0x%p phys 0x%llx\n", 12458ea06efd7b Anatolij Gustschin 2009-12-11 4092 adev->dma_desc_pool_virt, (u64)adev->dma_desc_pool); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4093 12458ea06efd7b Anatolij Gustschin 2009-12-11 @4094 regs = ioremap(res.start, resource_size(&res)); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4095 if (!regs) { 12458ea06efd7b Anatolij Gustschin 2009-12-11 4096 dev_err(&ofdev->dev, "failed to ioremap regs!\n"); f3b77727e82722 Julia Lawall 2013-12-29 4097 ret = -ENOMEM; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4098 goto err_regs_alloc; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4099 } 12458ea06efd7b Anatolij Gustschin 2009-12-11 4100 12458ea06efd7b Anatolij Gustschin 2009-12-11 4101 if (adev->id == PPC440SPE_XOR_ID) { 12458ea06efd7b Anatolij Gustschin 2009-12-11 4102 adev->xor_reg = regs; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4103 /* Reset XOR */ 12458ea06efd7b Anatolij Gustschin 2009-12-11 4104 iowrite32be(XOR_CRSR_XASR_BIT, &adev->xor_reg->crsr); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4105 iowrite32be(XOR_CRSR_64BA_BIT, &adev->xor_reg->crrr); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4106 } else { 12458ea06efd7b Anatolij Gustschin 2009-12-11 4107 size_t fifo_size = (adev->id == PPC440SPE_DMA0_ID) ? 12458ea06efd7b Anatolij Gustschin 2009-12-11 4108 DMA0_FIFO_SIZE : DMA1_FIFO_SIZE; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4109 adev->dma_reg = regs; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4110 /* DMAx_FIFO_SIZE is defined in bytes, 12458ea06efd7b Anatolij Gustschin 2009-12-11 4111 * <fsiz> - is defined in number of CDB pointers (8byte). 12458ea06efd7b Anatolij Gustschin 2009-12-11 4112 * DMA FIFO Length = CSlength + CPlength, where 12458ea06efd7b Anatolij Gustschin 2009-12-11 4113 * CSlength = CPlength = (fsiz + 1) * 8. 12458ea06efd7b Anatolij Gustschin 2009-12-11 4114 */ 12458ea06efd7b Anatolij Gustschin 2009-12-11 4115 iowrite32(DMA_FIFO_ENABLE | ((fifo_size >> 3) - 2), 12458ea06efd7b Anatolij Gustschin 2009-12-11 4116 &adev->dma_reg->fsiz); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4117 /* Configure DMA engine */ 12458ea06efd7b Anatolij Gustschin 2009-12-11 4118 iowrite32(DMA_CFG_DXEPR_HP | DMA_CFG_DFMPP_HP | DMA_CFG_FALGN, 12458ea06efd7b Anatolij Gustschin 2009-12-11 4119 &adev->dma_reg->cfg); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4120 /* Clear Status */ 12458ea06efd7b Anatolij Gustschin 2009-12-11 4121 iowrite32(~0, &adev->dma_reg->dsts); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4122 } 12458ea06efd7b Anatolij Gustschin 2009-12-11 4123 12458ea06efd7b Anatolij Gustschin 2009-12-11 4124 adev->dev = &ofdev->dev; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4125 adev->common.dev = &ofdev->dev; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4126 INIT_LIST_HEAD(&adev->common.channels); dd3daca162f741 Jingoo Han 2013-05-24 4127 platform_set_drvdata(ofdev, adev); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4128 12458ea06efd7b Anatolij Gustschin 2009-12-11 4129 /* create a channel */ 12458ea06efd7b Anatolij Gustschin 2009-12-11 4130 chan = kzalloc(sizeof(*chan), GFP_KERNEL); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4131 if (!chan) { 12458ea06efd7b Anatolij Gustschin 2009-12-11 4132 initcode = PPC_ADMA_INIT_CHANNEL; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4133 ret = -ENOMEM; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4134 goto err_chan_alloc; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4135 } 12458ea06efd7b Anatolij Gustschin 2009-12-11 4136 12458ea06efd7b Anatolij Gustschin 2009-12-11 4137 spin_lock_init(&chan->lock); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4138 INIT_LIST_HEAD(&chan->chain); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4139 INIT_LIST_HEAD(&chan->all_slots); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4140 chan->device = adev; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4141 chan->common.device = &adev->common; 8ac695463f37af Russell King - ARM Linux 2012-03-06 4142 dma_cookie_init(&chan->common); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4143 list_add_tail(&chan->common.device_node, &adev->common.channels); 7f8281765f9949 Allen Pais 2020-08-31 4144 tasklet_setup(&chan->irq_tasklet, ppc440spe_adma_tasklet); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4145 12458ea06efd7b Anatolij Gustschin 2009-12-11 4146 /* allocate and map helper pages for async validation or 12458ea06efd7b Anatolij Gustschin 2009-12-11 4147 * async_mult/async_sum_product operations on DMA0/1. 12458ea06efd7b Anatolij Gustschin 2009-12-11 4148 */ 12458ea06efd7b Anatolij Gustschin 2009-12-11 4149 if (adev->id != PPC440SPE_XOR_ID) { 12458ea06efd7b Anatolij Gustschin 2009-12-11 4150 chan->pdest_page = alloc_page(GFP_KERNEL); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4151 chan->qdest_page = alloc_page(GFP_KERNEL); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4152 if (!chan->pdest_page || 12458ea06efd7b Anatolij Gustschin 2009-12-11 4153 !chan->qdest_page) { 12458ea06efd7b Anatolij Gustschin 2009-12-11 4154 if (chan->pdest_page) 12458ea06efd7b Anatolij Gustschin 2009-12-11 4155 __free_page(chan->pdest_page); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4156 if (chan->qdest_page) 12458ea06efd7b Anatolij Gustschin 2009-12-11 4157 __free_page(chan->qdest_page); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4158 ret = -ENOMEM; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4159 goto err_page_alloc; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4160 } 12458ea06efd7b Anatolij Gustschin 2009-12-11 4161 chan->pdest = dma_map_page(&ofdev->dev, chan->pdest_page, 0, 12458ea06efd7b Anatolij Gustschin 2009-12-11 4162 PAGE_SIZE, DMA_BIDIRECTIONAL); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4163 chan->qdest = dma_map_page(&ofdev->dev, chan->qdest_page, 0, 12458ea06efd7b Anatolij Gustschin 2009-12-11 4164 PAGE_SIZE, DMA_BIDIRECTIONAL); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4165 } 12458ea06efd7b Anatolij Gustschin 2009-12-11 4166 12458ea06efd7b Anatolij Gustschin 2009-12-11 4167 ref = kmalloc(sizeof(*ref), GFP_KERNEL); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4168 if (ref) { 12458ea06efd7b Anatolij Gustschin 2009-12-11 4169 ref->chan = &chan->common; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4170 INIT_LIST_HEAD(&ref->node); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4171 list_add_tail(&ref->node, &ppc440spe_adma_chan_list); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4172 } else { 12458ea06efd7b Anatolij Gustschin 2009-12-11 4173 dev_err(&ofdev->dev, "failed to allocate channel reference!\n"); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4174 ret = -ENOMEM; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4175 goto err_ref_alloc; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4176 } 12458ea06efd7b Anatolij Gustschin 2009-12-11 4177 12458ea06efd7b Anatolij Gustschin 2009-12-11 4178 ret = ppc440spe_adma_setup_irqs(adev, chan, &initcode); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4179 if (ret) 12458ea06efd7b Anatolij Gustschin 2009-12-11 4180 goto err_irq; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4181 12458ea06efd7b Anatolij Gustschin 2009-12-11 4182 ppc440spe_adma_init_capabilities(adev); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4183 12458ea06efd7b Anatolij Gustschin 2009-12-11 4184 ret = dma_async_device_register(&adev->common); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4185 if (ret) { 12458ea06efd7b Anatolij Gustschin 2009-12-11 4186 initcode = PPC_ADMA_INIT_REGISTER; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4187 dev_err(&ofdev->dev, "failed to register dma device\n"); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4188 goto err_dev_reg; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4189 } 12458ea06efd7b Anatolij Gustschin 2009-12-11 4190 12458ea06efd7b Anatolij Gustschin 2009-12-11 4191 goto out; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4192 12458ea06efd7b Anatolij Gustschin 2009-12-11 4193 err_dev_reg: 12458ea06efd7b Anatolij Gustschin 2009-12-11 4194 ppc440spe_adma_release_irqs(adev, chan); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4195 err_irq: 12458ea06efd7b Anatolij Gustschin 2009-12-11 4196 list_for_each_entry_safe(ref, _ref, &ppc440spe_adma_chan_list, node) { 12458ea06efd7b Anatolij Gustschin 2009-12-11 4197 if (chan == to_ppc440spe_adma_chan(ref->chan)) { 12458ea06efd7b Anatolij Gustschin 2009-12-11 4198 list_del(&ref->node); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4199 kfree(ref); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4200 } 12458ea06efd7b Anatolij Gustschin 2009-12-11 4201 } 12458ea06efd7b Anatolij Gustschin 2009-12-11 4202 err_ref_alloc: 12458ea06efd7b Anatolij Gustschin 2009-12-11 4203 if (adev->id != PPC440SPE_XOR_ID) { 12458ea06efd7b Anatolij Gustschin 2009-12-11 4204 dma_unmap_page(&ofdev->dev, chan->pdest, 12458ea06efd7b Anatolij Gustschin 2009-12-11 4205 PAGE_SIZE, DMA_BIDIRECTIONAL); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4206 dma_unmap_page(&ofdev->dev, chan->qdest, 12458ea06efd7b Anatolij Gustschin 2009-12-11 4207 PAGE_SIZE, DMA_BIDIRECTIONAL); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4208 __free_page(chan->pdest_page); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4209 __free_page(chan->qdest_page); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4210 } 12458ea06efd7b Anatolij Gustschin 2009-12-11 4211 err_page_alloc: 12458ea06efd7b Anatolij Gustschin 2009-12-11 4212 kfree(chan); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4213 err_chan_alloc: 12458ea06efd7b Anatolij Gustschin 2009-12-11 4214 if (adev->id == PPC440SPE_XOR_ID) 12458ea06efd7b Anatolij Gustschin 2009-12-11 4215 iounmap(adev->xor_reg); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4216 else 12458ea06efd7b Anatolij Gustschin 2009-12-11 4217 iounmap(adev->dma_reg); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4218 err_regs_alloc: 12458ea06efd7b Anatolij Gustschin 2009-12-11 4219 dma_free_coherent(adev->dev, adev->pool_size, 12458ea06efd7b Anatolij Gustschin 2009-12-11 4220 adev->dma_desc_pool_virt, 12458ea06efd7b Anatolij Gustschin 2009-12-11 4221 adev->dma_desc_pool); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4222 err_dma_alloc: 12458ea06efd7b Anatolij Gustschin 2009-12-11 4223 kfree(adev); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4224 err_adev_alloc: 12458ea06efd7b Anatolij Gustschin 2009-12-11 4225 release_mem_region(res.start, resource_size(&res)); 12458ea06efd7b Anatolij Gustschin 2009-12-11 4226 out: 12458ea06efd7b Anatolij Gustschin 2009-12-11 4227 if (id < PPC440SPE_ADMA_ENGINES_NUM) 12458ea06efd7b Anatolij Gustschin 2009-12-11 4228 ppc440spe_adma_devices[id] = initcode; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4229 12458ea06efd7b Anatolij Gustschin 2009-12-11 4230 return ret; 12458ea06efd7b Anatolij Gustschin 2009-12-11 4231 } 12458ea06efd7b Anatolij Gustschin 2009-12-11 4232 :::::: The code at line 4094 was first introduced by commit :::::: 12458ea06efd7b44281e68fe59c950ec7d59c649 ppc440spe-adma: adds updated ppc440spe adma driver :::::: TO: Anatolij Gustschin <agust@xxxxxxx> :::::: CC: Dan Williams <dan.j.williams@xxxxxxxxx> --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
Attachment:
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