[U-Boot] [PATCH v2 01/17] dm: core: add functions to get memory-mapped I/O addreses

[Daniel Schwierzeck]

On 22.03.2018 19:39, Álvaro Fernández Rojas wrote:
> Signed-off-by: Álvaro Fernández Rojas <noltari at gmail.com>
> ---
>  drivers/core/fdtaddr.c | 12 ++++++++++++
>  drivers/core/read.c    | 12 ++++++++++++
>  include/dm/fdtaddr.h   | 22 ++++++++++++++++++++++
>  include/dm/read.h      | 32 ++++++++++++++++++++++++++++++++
>  4 files changed, 78 insertions(+)
> 
> diff --git a/drivers/core/fdtaddr.c b/drivers/core/fdtaddr.c
> index 3847dd836e..8a80000332 100644
> --- a/drivers/core/fdtaddr.c
> +++ b/drivers/core/fdtaddr.c
> @@ -132,6 +132,18 @@ void *devfdt_get_addr_ptr(struct udevice *dev)
>  	return (void *)(uintptr_t)devfdt_get_addr_index(dev, 0);
>  }
>  
> +void *devfdt_remap_addr_index(struct udevice *dev, int index)
> +{
> +	fdt_addr_t addr = devfdt_get_addr_index(dev, index);
> +
> +	return (addr == FDT_ADDR_T_NONE) ? NULL : ioremap(addr, 0);

hm, grepping through all arch's include directories it seems that
ioremap() is not available on all archs but map_physmem() is. Maybe you
should switch to map_physmem().

> +}
> +
> +void *devfdt_remap_addr(struct udevice *dev)
> +{
> +	return devfdt_remap_addr_index(dev, 0);
> +}
> +
>  void *devfdt_map_physmem(struct udevice *dev, unsigned long size)
>  {
>  	fdt_addr_t addr = devfdt_get_addr(dev);
> diff --git a/drivers/core/read.c b/drivers/core/read.c
> index 601d1322d6..0d338563ad 100644
> --- a/drivers/core/read.c
> +++ b/drivers/core/read.c
> @@ -58,6 +58,13 @@ fdt_addr_t dev_read_addr_index(struct udevice *dev, int index)
>  		return devfdt_get_addr_index(dev, index);
>  }
>  
> +void *dev_remap_addr_index(struct udevice *dev, int index)
> +{
> +	fdt_addr_t addr = dev_read_addr_index(dev, index);
> +
> +	return (addr == FDT_ADDR_T_NONE) ? NULL : ioremap(addr, 0);
> +}
> +
>  fdt_addr_t dev_read_addr(struct udevice *dev)
>  {
>  	return dev_read_addr_index(dev, 0);
> @@ -70,6 +77,11 @@ void *dev_read_addr_ptr(struct udevice *dev)
>  	return (addr == FDT_ADDR_T_NONE) ? NULL : map_sysmem(addr, 0);
>  }
>  
> +void * dev_remap_addr(struct udevice *dev)
> +{
> +	return dev_remap_addr_index(dev, 0);
> +}
> +
>  fdt_addr_t dev_read_addr_size(struct udevice *dev, const char *property,
>  			      fdt_size_t *sizep)
>  {
> diff --git a/include/dm/fdtaddr.h b/include/dm/fdtaddr.h
> index c46f0e91d0..82fc5f931d 100644
> --- a/include/dm/fdtaddr.h
> +++ b/include/dm/fdtaddr.h
> @@ -35,6 +35,28 @@ fdt_addr_t devfdt_get_addr(struct udevice *dev);
>  void *devfdt_get_addr_ptr(struct udevice *dev);
>  
>  /**
> + * devfdt_remap_addr() - Return pointer to the memory-mapped I/O address
> + *                           of the reg property of a device
> + *
> + * @dev: Pointer to a device
> + *
> + * @return Pointer to addr, or NULL if there is no such property
> + */
> +void *devfdt_remap_addr(struct udevice *dev);
> +
> +/**
> + * devfdt_remap_addr_index() - Return indexed pointer to the memory-mapped
> + *                                 I/O address of the reg property of a device
> + * @index: the 'reg' property can hold a list of <addr, size> pairs
> + *	   and @index is used to select which one is required
> + *
> + * @dev: Pointer to a device
> + *
> + * @return Pointer to addr, or NULL if there is no such property
> + */
> +void *devfdt_remap_addr_index(struct udevice *dev, int index);
> +
> +/**
>   * devfdt_map_physmem() - Read device address from reg property of the
>   *                     device node and map the address into CPU address
>   *                     space.
> diff --git a/include/dm/read.h b/include/dm/read.h
> index f14c7a7ba8..42eb585137 100644
> --- a/include/dm/read.h
> +++ b/include/dm/read.h
> @@ -114,6 +114,18 @@ int dev_read_size(struct udevice *dev, const char *propname);
>  fdt_addr_t dev_read_addr_index(struct udevice *dev, int index);
>  
>  /**
> + * dev_remap_addr_index() - Get the indexed reg property of a device
> + *                               as a memory-mapped I/O pointer
> + *
> + * @dev: Device to read from
> + * @index: the 'reg' property can hold a list of <addr, size> pairs
> + *	   and @index is used to select which one is required
> + *
> + * @return pointer or NULL if not found
> + */
> +void * dev_remap_addr_index(struct udevice *dev, int index);
> +
> +/**
>   * dev_read_addr() - Get the reg property of a device
>   *
>   * @dev: Device to read from
> @@ -133,6 +145,16 @@ fdt_addr_t dev_read_addr(struct udevice *dev);
>  void *dev_read_addr_ptr(struct udevice *dev);
>  
>  /**
> + * dev_remap_addr() - Get the reg property of a device as a
> + *                         memory-mapped I/O pointer
> + *
> + * @dev: Device to read from
> + *
> + * @return pointer or NULL if not found
> + */
> +void * dev_remap_addr(struct udevice *dev);
> +
> +/**
>   * dev_read_addr_size() - get address and size from a device property
>   *
>   * This does no address translation. It simply reads an property that contains
> @@ -483,6 +505,16 @@ static inline void *dev_read_addr_ptr(struct udevice *dev)
>  	return devfdt_get_addr_ptr(dev);
>  }
>  
> +static inline void *dev_remap_addr(struct udevice *dev)
> +{
> +	return devfdt_remap_addr(dev);
> +}
> +
> +static inline void *dev_remap_addr_index(struct udevice *dev, int index)
> +{
> +	return devfdt_remap_addr_index(dev, index);
> +}
> +
>  static inline fdt_addr_t dev_read_addr_size(struct udevice *dev,
>  					    const char *propname,
>  					    fdt_size_t *sizep)
> 

-- 
- Daniel

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