On 01/16/2015 08:59 PM, Rafał Miłecki wrote:
> This moves main bus init code to the main.c and renames old function to
> make its purpose clear.
> Thanks to this change we'll also be able to separate scanning from
> registration (and support PCIe Gen 2 devices) in the future.
>
> Signed-off-by: Rafał Miłecki <zaj...@gmail.com>
Signed-off-by: Hauke Mehrtens <ha...@hauke-m.de>
This should also fix the problem that the bus number in the early init
part was wrongly set to 0. I saw this on a SoC with BCMA as main bus and
some PCIe cards with bcma on it.
> ---
> V2: Fix typo (s/initialiation/initialization/)
> Put bcma_detect_chip earlier in .h to match order in .c
> ---
> drivers/bcma/bcma_private.h | 3 ++-
> drivers/bcma/main.c | 16 ++++++++++++----
> drivers/bcma/scan.c | 5 +----
> 3 files changed, 15 insertions(+), 9 deletions(-)
>
> diff --git a/drivers/bcma/bcma_private.h b/drivers/bcma/bcma_private.h
> index 314ae40..59422b5 100644
> --- a/drivers/bcma/bcma_private.h
> +++ b/drivers/bcma/bcma_private.h
> @@ -25,6 +25,7 @@ struct bcma_bus;
> bool bcma_wait_value(struct bcma_device *core, u16 reg, u32 mask, u32 value,
> int timeout);
> void bcma_prepare_core(struct bcma_bus *bus, struct bcma_device *core);
> +void bcma_init_bus(struct bcma_bus *bus);
> int bcma_bus_register(struct bcma_bus *bus);
> void bcma_bus_unregister(struct bcma_bus *bus);
> int __init bcma_bus_early_register(struct bcma_bus *bus,
> @@ -36,11 +37,11 @@ int bcma_bus_resume(struct bcma_bus *bus);
> #endif
>
> /* scan.c */
> +void bcma_detect_chip(struct bcma_bus *bus);
> int bcma_bus_scan(struct bcma_bus *bus);
> int __init bcma_bus_scan_early(struct bcma_bus *bus,
> struct bcma_device_id *match,
> struct bcma_device *core);
> -void bcma_init_bus(struct bcma_bus *bus);
>
> /* sprom.c */
> int bcma_sprom_get(struct bcma_bus *bus);
> diff --git a/drivers/bcma/main.c b/drivers/bcma/main.c
> index 534e133..c166d44 100644
> --- a/drivers/bcma/main.c
> +++ b/drivers/bcma/main.c
> @@ -268,6 +268,18 @@ void bcma_prepare_core(struct bcma_bus *bus, struct
> bcma_device *core)
> }
> }
>
> +void bcma_init_bus(struct bcma_bus *bus)
> +{
> + mutex_lock(&bcma_buses_mutex);
> + bus->num = bcma_bus_next_num++;
> + mutex_unlock(&bcma_buses_mutex);
> +
> + INIT_LIST_HEAD(&bus->cores);
> + bus->nr_cores = 0;
> +
> + bcma_detect_chip(bus);
> +}
> +
> static void bcma_register_core(struct bcma_bus *bus, struct bcma_device
> *core)
> {
> int err;
> @@ -369,10 +381,6 @@ int bcma_bus_register(struct bcma_bus *bus)
> int err;
> struct bcma_device *core;
>
> - mutex_lock(&bcma_buses_mutex);
> - bus->num = bcma_bus_next_num++;
> - mutex_unlock(&bcma_buses_mutex);
> -
> /* Scan for devices (cores) */
> err = bcma_bus_scan(bus);
> if (err) {
> diff --git a/drivers/bcma/scan.c b/drivers/bcma/scan.c
> index 9175207..5328ee5 100644
> --- a/drivers/bcma/scan.c
> +++ b/drivers/bcma/scan.c
> @@ -435,15 +435,12 @@ static int bcma_get_next_core(struct bcma_bus *bus, u32
> __iomem **eromptr,
> return 0;
> }
>
> -void bcma_init_bus(struct bcma_bus *bus)
> +void bcma_detect_chip(struct bcma_bus *bus)
> {
> s32 tmp;
> struct bcma_chipinfo *chipinfo = &(bus->chipinfo);
> char chip_id[8];
>
> - INIT_LIST_HEAD(&bus->cores);
> - bus->nr_cores = 0;
> -
> bcma_scan_switch_core(bus, BCMA_ADDR_BASE);
>
> tmp = bcma_scan_read32(bus, 0, BCMA_CC_ID);
>
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