Konrad: sorry for the double message, hit reply instead of reply-all -
it's best to keep things on-list =)
On Wed, Jun 10, 2009 at 20:09, <konrad@xxxxxxxxxxx> wrote:
> From: Konrad Eisele <konrad@xxxxxxxxxxx>
> This macro will shield, if undefined, the sun-sparc code
> from LEON specific code. In particular include/asm/leon.h
> will get empty through #ifdef arch/sparc/kernel/leon.c not
> compiled through Makefile:obj-$(CONFIG_SPARC_LEON)
> arch/sparc/mm/leon.c not compiled through
> Makefile:obj-$(CONFIG_SPARC_LEON)
> ---
> arch/sparc/Kconfig | 6
> arch/sparc/include/asm/leon.h | 571 +++++++++++++++++++++++++++++++++++++++++
> arch/sparc/kernel/leon_k.c | 195 ++++++++++++++
> arch/sparc/mm/leon_m.c | 254 ++++++++++++++++++
> 4 files changed, 1026 insertions(+), 0 deletions(-)
>
> diff --git a/arch/sparc/include/asm/leon.h b/arch/sparc/include/asm/leon.h
> new file mode 100644
> index 0000000..e051692
> --- /dev/null
> +++ b/arch/sparc/include/asm/leon.h
[snip]
> +#ifndef __ASSEMBLY__
> +
> +/* do a virtual address read without cache */
> +static inline unsigned long leon_readnobuffer_reg(unsigned long paddr)
> +{
> + unsigned long retval;
> + __asm__ __volatile__("lda [%1] %2, %0\n\t" :
> + "=r"(retval) : "r"(paddr), "i"(ASI_LEON_NOCACHE));
> + return retval;
> +}
> +
> +/* do a physical address bypass write, i.e. for 0x80000000 */
> +static inline void leon_store_reg(unsigned long paddr, unsigned long value)
> +{
> + __asm__ __volatile__("sta %0, [%1] %2\n\t" : : "r"(value), "r"(paddr),
> + "i"(ASI_LEON_BYPASS) : "memory");
> +}
> +
> +/* do a physical address bypass load, i.e. for 0x80000000 */
> +static inline unsigned long leon_load_reg(unsigned long paddr)
> +{
> + unsigned long retval;
> + __asm__ __volatile__("lda [%1] %2, %0\n\t" :
> + "=r"(retval) : "r"(paddr), "i"(ASI_LEON_BYPASS));
> + return retval;
> +}
> +
> +extern inline void leon_srmmu_disabletlb(void)
> +{
> + unsigned int retval;
> + __asm__ __volatile__("lda [%%g0] %2, %0\n\t" : "=r"(retval) : "r"(0),
> + "i"(ASI_LEON_MMUREGS));
> + retval |= LEON_CNR_CTRL_TLBDIS;
> + __asm__ __volatile__("sta %0, [%%g0] %2\n\t" : : "r"(retval), "r"(0),
> + "i"(ASI_LEON_MMUREGS) : "memory");
> +}
> +
> +extern inline void leon_srmmu_enabletlb(void)
> +{
> + unsigned int retval;
> + __asm__ __volatile__("lda [%%g0] %2, %0\n\t" : "=r"(retval) : "r"(0),
> + "i"(ASI_LEON_MMUREGS));
> + retval = retval & ~LEON_CNR_CTRL_TLBDIS;
> + __asm__ __volatile__("sta %0, [%%g0] %2\n\t" : : "r"(retval), "r"(0),
> + "i"(ASI_LEON_MMUREGS) : "memory");
> +}
[snip]
> +extern inline unsigned long sparc_leon3_get_dcachecfg(void)
> +{
> + unsigned int retval;
> + __asm__ __volatile__("lda [%1] %2, %0\n\t" :
> + "=r"(retval) :
> + "r"(ASI_LEON3_SYSCTRL_DCFG),
> + "i"(ASI_LEON3_SYSCTRL));
> + return retval;
> +}
> +
> +/*enable snooping*/
> +extern inline void sparc_leon3_enable_snooping(void)
> +{
> + __asm__ __volatile__ ("lda [%%g0] 2, %%l1\n\t"
> + "set 0x800000, %%l2\n\t"
> + "or %%l2, %%l1, %%l2\n\t"
> + "sta %%l2, [%%g0] 2\n\t" : : : "l1", "l2");
> +};
> +
> +extern inline void sparc_leon3_disable_cache(void)
> +{
> + __asm__ __volatile__ ("lda [%%g0] 2, %%l1\n\t"
> + "set 0x00000f, %%l2\n\t"
> + "andn %%l2, %%l1, %%l2\n\t"
> + "sta %%l2, [%%g0] 2\n\t" : : : "l1", "l2");
> +};
I don't understand what's going on with this code, but I don't think
it should live in a header file.
Thanks,
--
Julian Calaby
Email: julian.calaby@xxxxxxxxx
.Plan: http://sites.google.com/site/juliancalaby/
--
To unsubscribe from this list: send the line "unsubscribe sparclinux" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
