[PATCH 1/5] PCI: add some useful debug output

[Sascha Hauer]

On Tue, Nov 01, 2016 at 09:58:51AM +0100, Lucas Stach wrote:
> This makes diagnosing problems in address space allocation
> much easier.
> 
> Signed-off-by: Lucas Stach <l.stach at pengutronix.de>
> ---
>  drivers/pci/pci.c | 6 ++++++
>  1 file changed, 6 insertions(+)

Applied, thanks

Sascha

> 
> diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
> index 191561da0368..46f5d5f7de36 100644
> --- a/drivers/pci/pci.c
> +++ b/drivers/pci/pci.c
> @@ -179,6 +179,7 @@ static void setup_device(struct pci_dev *dev, int max_bar)
>  				pr_debug("BAR does not fit within bus IO res\n");
>  				return;
>  			}
> +			pr_debug("pbar%d: allocated at 0x%08x\n", bar, last_io);
>  			pci_write_config_dword(dev, PCI_BASE_ADDRESS_0 + bar * 4, last_io);
>  			dev->resource[bar].flags = IORESOURCE_IO;
>  			last_addr = last_io;
> @@ -197,6 +198,7 @@ static void setup_device(struct pci_dev *dev, int max_bar)
>  				pr_debug("BAR does not fit within bus p-mem res\n");
>  				return;
>  			}
> +			pr_debug("pbar%d: allocated at 0x%08x\n", bar, last_mem_pref);
>  			pci_write_config_dword(dev, PCI_BASE_ADDRESS_0 + bar * 4, last_mem_pref);
>  			dev->resource[bar].flags = IORESOURCE_MEM |
>  			                           IORESOURCE_PREFETCH;
> @@ -215,6 +217,7 @@ static void setup_device(struct pci_dev *dev, int max_bar)
>  				pr_debug("BAR does not fit within bus np-mem res\n");
>  				return;
>  			}
> +			pr_debug("pbar%d: allocated at 0x%08x\n", bar, last_mem);
>  			pci_write_config_dword(dev, PCI_BASE_ADDRESS_0 + bar * 4, last_mem);
>  			dev->resource[bar].flags = IORESOURCE_MEM;
>  			last_addr = last_mem;
> @@ -286,18 +289,21 @@ static void postscan_setup_bridge(struct pci_dev *dev)
>  
>  	if (last_mem) {
>  		last_mem = ALIGN(last_mem, SZ_1M);
> +		pr_debug("bridge NP limit at 0x%08x\n", last_mem);
>  		pci_write_config_word(dev, PCI_MEMORY_LIMIT,
>  				      ((last_mem - 1) & 0xfff00000) >> 16);
>  	}
>  
>  	if (last_mem_pref) {
>  		last_mem_pref = ALIGN(last_mem_pref, SZ_1M);
> +		pr_debug("bridge P limit at 0x%08x\n", last_mem_pref);
>  		pci_write_config_word(dev, PCI_PREF_MEMORY_LIMIT,
>  				      ((last_mem_pref - 1) & 0xfff00000) >> 16);
>  	}
>  
>  	if (last_io) {
>  		last_io = ALIGN(last_io, SZ_4K);
> +		pr_debug("bridge IO limit at 0x%08x\n", last_io);
>  		pci_write_config_byte(dev, PCI_IO_LIMIT,
>  				((last_io - 1) & 0x0000f000) >> 8);
>  		pci_write_config_word(dev, PCI_IO_LIMIT_UPPER16,
> -- 
> 2.10.1
> 
> 
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