Subject: Re: [PATCH 05/15] ps3: Detect the current lpar environment

From: Geoff Levand <[email-masked]>
Date: Wed, 3 Aug 2011 15:31:48 -0700

On 08/01/2011 01:02 PM, Andre Heider wrote:
> ---
>  arch/powerpc/include/asm/ps3.h          |    7 +++++++
>  arch/powerpc/platforms/ps3/platform.h   |    4 ++++
>  arch/powerpc/platforms/ps3/repository.c |   19 +++++++++++++++++++
>  arch/powerpc/platforms/ps3/setup.c      |   22 ++++++++++++++++++++++
>  4 files changed, 52 insertions(+), 0 deletions(-)
> 
> diff --git a/arch/powerpc/include/asm/ps3.h b/arch/powerpc/include/asm/ps3.h
> index 7f065e1..136354a 100644
> --- a/arch/powerpc/include/asm/ps3.h
> +++ b/arch/powerpc/include/asm/ps3.h
> @@ -39,6 +39,13 @@ union ps3_firmware_version {
>  void ps3_get_firmware_version(union ps3_firmware_version *v);
>  int ps3_compare_firmware_version(u16 major, u16 minor, u16 rev);
>  
> +enum ps3_ss_laid {
> +	PS3_SS_LAID_GAMEOS = 0x1070000002000001UL,
> +	PS3_SS_LAID_OTHEROS = 0x1080000004000001UL,

Only PS3_SS_LAID_OTHEROS is used for anything outside ps3_setup_arch(),
so I think it makes sense to split this into two patches with one adding
just PS3_SS_LAID_OTHEROS and ps3_get_ss_laid() with a comment that
it adds the ps3_get_ss_laid routine.

> +};
> +
> +enum ps3_ss_laid ps3_get_ss_laid(void);
> +
>  /* 'Other OS' area */
>  
>  enum ps3_param_av_multi_out {
> diff --git a/arch/powerpc/platforms/ps3/platform.h b/arch/powerpc/platforms/ps3/platform.h
> index 9a196a8..1ba15b8 100644
> --- a/arch/powerpc/platforms/ps3/platform.h
> +++ b/arch/powerpc/platforms/ps3/platform.h
> @@ -232,4 +232,8 @@ int ps3_repository_read_spu_resource_id(unsigned int res_index,
>  int ps3_repository_read_vuart_av_port(unsigned int *port);
>  int ps3_repository_read_vuart_sysmgr_port(unsigned int *port);
>  
> +/* repository ss info */
> +
> +int ps3_repository_read_ss_laid(enum ps3_ss_laid *laid);
> +
>  #endif
> diff --git a/arch/powerpc/platforms/ps3/repository.c b/arch/powerpc/platforms/ps3/repository.c
> index 5e304c2..6fa3e96 100644
> --- a/arch/powerpc/platforms/ps3/repository.c
> +++ b/arch/powerpc/platforms/ps3/repository.c
> @@ -1002,6 +1002,25 @@ int ps3_repository_read_lpm_privileges(unsigned int be_index, u64 *lpar,
>  			    lpar, rights);
>  }
>  
> +/**
> + * ps3_repository_read_ss_laid - Read the lpar auth id
> + */
> +
> +int ps3_repository_read_ss_laid(enum ps3_ss_laid *laid)
> +{
> +	int result;
> +	u64 id, v1;
> +
> +	lv1_get_logical_partition_id(&id);
> +	result = read_node(PS3_LPAR_ID_PME,
> +			   make_first_field("ss", 0),
> +			   make_field("laid", 0),
> +			   id, 0,
> +			   &v1, NULL);
> +	*laid = v1;
> +	return result;
> +}
> +
>  #if defined(DEBUG)
>  
>  int ps3_repository_dump_resource_info(const struct ps3_repository_device *repo)
> diff --git a/arch/powerpc/platforms/ps3/setup.c b/arch/powerpc/platforms/ps3/setup.c
> index 149bea2..f430279 100644
> --- a/arch/powerpc/platforms/ps3/setup.c
> +++ b/arch/powerpc/platforms/ps3/setup.c
> @@ -47,6 +47,7 @@ DEFINE_MUTEX(ps3_gpu_mutex);
>  EXPORT_SYMBOL_GPL(ps3_gpu_mutex);
>  
>  static union ps3_firmware_version ps3_firmware_version;
> +static enum ps3_ss_laid ps3_ss_laid;
>  
>  void ps3_get_firmware_version(union ps3_firmware_version *v)
>  {
> @@ -68,6 +69,12 @@ int ps3_compare_firmware_version(u16 major, u16 minor, u16 rev)
>  }
>  EXPORT_SYMBOL_GPL(ps3_compare_firmware_version);
>  
> +enum ps3_ss_laid ps3_get_ss_laid(void)
> +{
> +	return ps3_ss_laid;
> +}
> +EXPORT_SYMBOL_GPL(ps3_get_ss_laid);
> +
>  static void ps3_power_save(void)
>  {
>  	/*
> @@ -192,6 +199,7 @@ static int ps3_set_dabr(unsigned long dabr)
>  
>  static void __init ps3_setup_arch(void)
>  {
> +	const char *laid_str;
>  
>  	DBG(" -> %s:%d\n", __func__, __LINE__);
>  
> @@ -200,6 +208,20 @@ static void __init ps3_setup_arch(void)
>  	       ps3_firmware_version.major, ps3_firmware_version.minor,
>  	       ps3_firmware_version.rev);
>  
> +	ps3_repository_read_ss_laid(&ps3_ss_laid);
> +	switch (ps3_ss_laid) {
> +	case PS3_SS_LAID_GAMEOS:
> +		laid_str = "GameOS";
> +		break;
> +	case PS3_SS_LAID_OTHEROS:
> +		laid_str = "OtherOS";
> +		break;
> +	default:
> +		laid_str = "unknown";
> +		break;
> +	}
> +	printk(KERN_INFO "Running in %s lpar\n", laid_str);
> +
>  	ps3_spu_set_platform();
>  
>  #ifdef CONFIG_SMP