On Thu, 11 Jun 2009, arm-kernel@xxxxxxxxxxxxxxxx wrote:
> From: Sebastian Andrzej Siewior <sebastian@xxxxxxxxxxxxx>
>
> The security accelerator which can act as a puppet player for the crypto
> engine requires its commands in the sram. This patch adds support for the
> phys mapping and creates a platform device the actual driver.
>
> Signed-off-by: Sebastian Andrzej Siewior <sebastian@xxxxxxxxxxxxx>
This one is already merged in the Orion and ARM tree, with a minor fix
and device renamed to be more generic. The equivalent registration for
Kirkwood is merged as well already.
> ---
> arch/arm/mach-orion5x/addr-map.c | 14 ++++++++-
> arch/arm/mach-orion5x/common.c | 36 ++++++++++++++++++++++++++
> arch/arm/mach-orion5x/common.h | 2 +
> arch/arm/mach-orion5x/include/mach/orion5x.h | 6 ++++
> 4 files changed, 56 insertions(+), 2 deletions(-)
>
> diff --git a/arch/arm/mach-orion5x/addr-map.c b/arch/arm/mach-orion5x/addr-map.c
> index c14d121..d78731e 100644
> --- a/arch/arm/mach-orion5x/addr-map.c
> +++ b/arch/arm/mach-orion5x/addr-map.c
> @@ -14,6 +14,7 @@
> #include <linux/init.h>
> #include <linux/mbus.h>
> #include <linux/io.h>
> +#include <linux/errno.h>
> #include <mach/hardware.h>
> #include "common.h"
>
> @@ -44,6 +45,7 @@
> #define TARGET_DEV_BUS 1
> #define TARGET_PCI 3
> #define TARGET_PCIE 4
> +#define TARGET_SRAM 9
> #define ATTR_PCIE_MEM 0x59
> #define ATTR_PCIE_IO 0x51
> #define ATTR_PCIE_WA 0x79
> @@ -53,6 +55,7 @@
> #define ATTR_DEV_CS1 0x1d
> #define ATTR_DEV_CS2 0x1b
> #define ATTR_DEV_BOOT 0xf
> +#define ATTR_SRAM 0x0
>
> /*
> * Helpers to get DDR bank info
> @@ -87,13 +90,13 @@ static int __init orion5x_cpu_win_can_remap(int win)
> return 0;
> }
>
> -static void __init setup_cpu_win(int win, u32 base, u32 size,
> +static int __init setup_cpu_win(int win, u32 base, u32 size,
> u8 target, u8 attr, int remap)
> {
> if (win >= 8) {
> printk(KERN_ERR "setup_cpu_win: trying to allocate "
> "window %d\n", win);
> - return;
> + return -ENOSPC;
> }
>
> writel(base & 0xffff0000, CPU_WIN_BASE(win));
> @@ -107,6 +110,7 @@ static void __init setup_cpu_win(int win, u32 base, u32 size,
> writel(remap & 0xffff0000, CPU_WIN_REMAP_LO(win));
> writel(0, CPU_WIN_REMAP_HI(win));
> }
> + return 0;
> }
>
> void __init orion5x_setup_cpu_mbus_bridge(void)
> @@ -193,3 +197,9 @@ void __init orion5x_setup_pcie_wa_win(u32 base, u32 size)
> setup_cpu_win(win_alloc_count++, base, size,
> TARGET_PCIE, ATTR_PCIE_WA, -1);
> }
> +
> +int __init orion5x_setup_sram_win(void)
> +{
> + return setup_cpu_win(win_alloc_count++, ORION5X_SRAM_PHYS_BASE,
> + ORION5X_SRAM_SIZE, TARGET_SRAM, ATTR_SRAM, -1);
> +}
> diff --git a/arch/arm/mach-orion5x/common.c b/arch/arm/mach-orion5x/common.c
> index b1c7778..f290582 100644
> --- a/arch/arm/mach-orion5x/common.c
> +++ b/arch/arm/mach-orion5x/common.c
> @@ -536,6 +536,42 @@ void __init orion5x_xor_init(void)
> platform_device_register(&orion5x_xor1_channel);
> }
>
> +static struct resource orion5x_crypto_res[] = {
> + {
> + .name = "regs",
> + .start = ORION5X_CRYPTO_PHYS_BASE,
> + .end = ORION5X_CRYPTO_PHYS_BASE + 0xffff,
> + .flags = IORESOURCE_MEM,
> + }, {
> + .name = "sram",
> + .start = ORION5X_SRAM_PHYS_BASE,
> + .end = ORION5X_SRAM_PHYS_BASE + 8 * 1024,
> + .flags = IORESOURCE_MEM,
> + }, {
> + .name = "crypto interrupt",
> + .start = IRQ_ORION5X_CESA,
> + .end = IRQ_ORION5X_CESA,
> + .flags = IORESOURCE_IRQ,
> + },
> +};
> +
> +static struct platform_device orion5x_crypto_device = {
> + .name = "mv,orion5x-crypto",
> + .id = 0,
> + .num_resources = ARRAY_SIZE(orion5x_crypto_res),
> + .resource = orion5x_crypto_res,
> +};
> +
> +int __init orion5x_crypto_init(void)
> +{
> + int ret;
> +
> + ret = orion5x_setup_sram_win();
> + if (ret)
> + return ret;
> +
> + return platform_device_register(&orion5x_crypto_device);
> +}
>
> /*****************************************************************************
> * Watchdog
> diff --git a/arch/arm/mach-orion5x/common.h b/arch/arm/mach-orion5x/common.h
> index 798b9a5..de483e8 100644
> --- a/arch/arm/mach-orion5x/common.h
> +++ b/arch/arm/mach-orion5x/common.h
> @@ -26,6 +26,7 @@ void orion5x_setup_dev0_win(u32 base, u32 size);
> void orion5x_setup_dev1_win(u32 base, u32 size);
> void orion5x_setup_dev2_win(u32 base, u32 size);
> void orion5x_setup_pcie_wa_win(u32 base, u32 size);
> +int orion5x_setup_sram_win(void);
>
> void orion5x_ehci0_init(void);
> void orion5x_ehci1_init(void);
> @@ -37,6 +38,7 @@ void orion5x_spi_init(void);
> void orion5x_uart0_init(void);
> void orion5x_uart1_init(void);
> void orion5x_xor_init(void);
> +int orion5x_crypto_init(void);
>
> /*
> * PCIe/PCI functions.
> diff --git a/arch/arm/mach-orion5x/include/mach/orion5x.h b/arch/arm/mach-orion5x/include/mach/orion5x.h
> index 377a773..2d87665 100644
> --- a/arch/arm/mach-orion5x/include/mach/orion5x.h
> +++ b/arch/arm/mach-orion5x/include/mach/orion5x.h
> @@ -24,6 +24,7 @@
> * f1000000 on-chip peripheral registers
> * f2000000 PCIe I/O space
> * f2100000 PCI I/O space
> + * f2200000 SRAM dedicated for the crypto unit
> * f4000000 device bus mappings (boot)
> * fa000000 device bus mappings (cs0)
> * fa800000 device bus mappings (cs2)
> @@ -49,6 +50,9 @@
> #define ORION5X_PCI_IO_BUS_BASE 0x00100000
> #define ORION5X_PCI_IO_SIZE SZ_1M
>
> +#define ORION5X_SRAM_PHYS_BASE (0xf2200000)
> +#define ORION5X_SRAM_SIZE SZ_8K
> +
> /* Relevant only for Orion-1/Orion-NAS */
> #define ORION5X_PCIE_WA_PHYS_BASE 0xf0000000
> #define ORION5X_PCIE_WA_VIRT_BASE 0xfe000000
> @@ -94,6 +98,8 @@
> #define ORION5X_SATA_PHYS_BASE (ORION5X_REGS_PHYS_BASE | 0x80000)
> #define ORION5X_SATA_VIRT_BASE (ORION5X_REGS_VIRT_BASE | 0x80000)
>
> +#define ORION5X_CRYPTO_PHYS_BASE (ORION5X_REGS_PHYS_BASE | 0x90000)
> +
> #define ORION5X_USB1_PHYS_BASE (ORION5X_REGS_PHYS_BASE | 0xa0000)
> #define ORION5X_USB1_VIRT_BASE (ORION5X_REGS_VIRT_BASE | 0xa0000)
>
> --
> 1.6.0.6
>
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