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Tegra: smmu: export handlers to read/write SMMU registers 

This patch exports the SMMU register read/write handlers for platforms.

Change-Id: If92f0d3ce820e4997c090b48be7614407bb582da
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
This commit is contained in:
Varun Wadekar 2018-12-10 13:20:49 -08:00
parent a391d4942a
commit 91dd7edd31
2 changed files with 56 additions and 55 deletions
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54
plat/nvidia/tegra/common/drivers/smmu/smmu.c
View File

@ -18,60 +18,6 @@
extern void memcpy16(void *dest, const void *src, unsigned int length);
/* SMMU IDs currently supported by the driver */
enum {
TEGRA_SMMU0 = 0U,
TEGRA_SMMU1,
TEGRA_SMMU2
};
static uint32_t tegra_smmu_read_32(uint32_t smmu_id, uint32_t off)
{
uint32_t ret = 0U;
#if defined(TEGRA_SMMU0_BASE)
if (smmu_id == TEGRA_SMMU0) {
ret = mmio_read_32(TEGRA_SMMU0_BASE + (uint64_t)off);
}
#endif
#if defined(TEGRA_SMMU1_BASE)
if (smmu_id == TEGRA_SMMU1) {
ret = mmio_read_32(TEGRA_SMMU1_BASE + (uint64_t)off);
}
#endif
#if defined(TEGRA_SMMU2_BASE)
if (smmu_id == TEGRA_SMMU2) {
ret = mmio_read_32(TEGRA_SMMU2_BASE + (uint64_t)off);
}
#endif
return ret;
}
static void tegra_smmu_write_32(uint32_t smmu_id,
uint32_t off, uint32_t val)
{
#if defined(TEGRA_SMMU0_BASE)
if (smmu_id == TEGRA_SMMU0) {
mmio_write_32(TEGRA_SMMU0_BASE + (uint64_t)off, val);
}
#endif
#if defined(TEGRA_SMMU1_BASE)
if (smmu_id == TEGRA_SMMU1) {
mmio_write_32(TEGRA_SMMU1_BASE + (uint64_t)off, val);
}
#endif
#if defined(TEGRA_SMMU2_BASE)
if (smmu_id == TEGRA_SMMU2) {
mmio_write_32(TEGRA_SMMU2_BASE + (uint64_t)off, val);
}
#endif
}
#define SMMU_NUM_CONTEXTS 64U
#define SMMU_CONTEXT_BANK_MAX_IDX 64U

57
plat/nvidia/tegra/include/drivers/smmu.h
View File

@ -23,13 +23,68 @@
#define SMMU_GSR0_PGSIZE_SHIFT 16U
#define SMMU_GSR0_PGSIZE_4K (0U << SMMU_GSR0_PGSIZE_SHIFT)
#define SMMU_GSR0_PGSIZE_64K (1U << SMMU_GSR0_PGSIZE_SHIFT)
#define SMMU_ACR_CACHE_LOCK_ENABLE_BIT (1U << 26)
#define SMMU_ACR_CACHE_LOCK_ENABLE_BIT (1ULL << 26U)
#define SMMU_GSR0_PER (0x20200U)
/*******************************************************************************
* SMMU Global Aux. Control Register
******************************************************************************/
#define SMMU_CBn_ACTLR_CPRE_BIT (1ULL << 1U)
/* SMMU IDs currently supported by the driver */
enum {
TEGRA_SMMU0 = 0U,
TEGRA_SMMU1 = 1U,
TEGRA_SMMU2 = 2U
};
static inline uint32_t tegra_smmu_read_32(uint32_t smmu_id, uint32_t off)
{
uint32_t ret = 0U;
#if defined(TEGRA_SMMU0_BASE)
if (smmu_id == TEGRA_SMMU0) {
ret = mmio_read_32(TEGRA_SMMU0_BASE + (uint64_t)off);
}
#endif
#if defined(TEGRA_SMMU1_BASE)
if (smmu_id == TEGRA_SMMU1) {
ret = mmio_read_32(TEGRA_SMMU1_BASE + (uint64_t)off);
}
#endif
#if defined(TEGRA_SMMU2_BASE)
if (smmu_id == TEGRA_SMMU2) {
ret = mmio_read_32(TEGRA_SMMU2_BASE + (uint64_t)off);
}
#endif
return ret;
}
static inline void tegra_smmu_write_32(uint32_t smmu_id,
uint32_t off, uint32_t val)
{
#if defined(TEGRA_SMMU0_BASE)
if (smmu_id == TEGRA_SMMU0) {
mmio_write_32(TEGRA_SMMU0_BASE + (uint64_t)off, val);
}
#endif
#if defined(TEGRA_SMMU1_BASE)
if (smmu_id == TEGRA_SMMU1) {
mmio_write_32(TEGRA_SMMU1_BASE + (uint64_t)off, val);
}
#endif
#if defined(TEGRA_SMMU2_BASE)
if (smmu_id == TEGRA_SMMU2) {
mmio_write_32(TEGRA_SMMU2_BASE + (uint64_t)off, val);
}
#endif
}
void tegra_smmu_init(void);
uint32_t plat_get_num_smmu_devices(void);