Tegra186: smmu: driver for the smmu hardware block
This patch adds a device driver for the SMMU hardware block on
Tegra186 SoCs. We use the generic ARM SMMU-500 IP block on
Tegra186. The driver only supports saving the SMMU settings
before entering system suspend. The MC driver and the NS world
clients take care of programming their own settings.
Change-Id: Iab5a90310ee10f6bc8745451ce50952ab3de7188
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
diff --git a/plat/nvidia/tegra/soc/t186/drivers/smmu/smmu.c b/plat/nvidia/tegra/soc/t186/drivers/smmu/smmu.c
new file mode 100644
index 0000000..2940f58
--- /dev/null
+++ b/plat/nvidia/tegra/soc/t186/drivers/smmu/smmu.c
@@ -0,0 +1,466 @@
+/*
+ * Copyright (c) 2016, ARM Limited and Contributors. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * Neither the name of ARM nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific
+ * prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <assert.h>
+#include <debug.h>
+#include <memctrl_v2.h>
+#include <smmu.h>
+
+typedef struct smmu_regs {
+ uint32_t reg;
+ uint32_t val;
+} smmu_regs_t;
+
+#define mc_make_sid_override_cfg(name) \
+ { \
+ .reg = TEGRA_MC_STREAMID_BASE + MC_STREAMID_OVERRIDE_CFG_ ## name, \
+ .val = 0x00000000, \
+ }
+
+#define mc_make_sid_security_cfg(name) \
+ { \
+ .reg = TEGRA_MC_STREAMID_BASE + MC_STREAMID_SECURITY_CFG_ ## name, \
+ .val = 0x00000000, \
+ }
+
+#define smmu_make_gnsr0_sec_cfg(name) \
+ { \
+ .reg = TEGRA_SMMU_BASE + SMMU_GNSR0_ ## name, \
+ .val = 0x00000000, \
+ }
+
+/*
+ * On ARM-SMMU, conditional offset to access secure aliases of non-secure registers
+ * is 0x400. So, add it to register address
+ */
+#define smmu_make_gnsr0_nsec_cfg(name) \
+ { \
+ .reg = TEGRA_SMMU_BASE + 0x400 + SMMU_GNSR0_ ## name, \
+ .val = 0x00000000, \
+ }
+
+#define smmu_make_gnsr0_smr_cfg(n) \
+ { \
+ .reg = TEGRA_SMMU_BASE + SMMU_GNSR0_SMR ## n, \
+ .val = 0x00000000, \
+ }
+
+#define smmu_make_gnsr0_s2cr_cfg(n) \
+ { \
+ .reg = TEGRA_SMMU_BASE + SMMU_GNSR0_S2CR ## n, \
+ .val = 0x00000000, \
+ }
+
+#define smmu_make_gnsr1_cbar_cfg(n) \
+ { \
+ .reg = TEGRA_SMMU_BASE + (1 << PGSHIFT) + SMMU_GNSR1_CBAR ## n, \
+ .val = 0x00000000, \
+ }
+
+#define smmu_make_gnsr1_cba2r_cfg(n) \
+ { \
+ .reg = TEGRA_SMMU_BASE + (1 << PGSHIFT) + SMMU_GNSR1_CBA2R ## n, \
+ .val = 0x00000000, \
+ }
+
+#define make_smmu_cb_cfg(name, n) \
+ { \
+ .reg = TEGRA_SMMU_BASE + (CB_SIZE >> 1) + (n * (1 << PGSHIFT)) \
+ + SMMU_CBn_ ## name, \
+ .val = 0x00000000, \
+ }
+
+#define smmu_make_smrg_group(n) \
+ smmu_make_gnsr0_smr_cfg(n), \
+ smmu_make_gnsr0_s2cr_cfg(n), \
+ smmu_make_gnsr1_cbar_cfg(n), \
+ smmu_make_gnsr1_cba2r_cfg(n) /* don't put "," here. */
+
+#define smmu_make_cb_group(n) \
+ make_smmu_cb_cfg(SCTLR, n), \
+ make_smmu_cb_cfg(TCR2, n), \
+ make_smmu_cb_cfg(TTBR0_LO, n), \
+ make_smmu_cb_cfg(TTBR0_HI, n), \
+ make_smmu_cb_cfg(TCR, n), \
+ make_smmu_cb_cfg(PRRR_MAIR0, n),\
+ make_smmu_cb_cfg(FSR, n), \
+ make_smmu_cb_cfg(FAR_LO, n), \
+ make_smmu_cb_cfg(FAR_HI, n), \
+ make_smmu_cb_cfg(FSYNR0, n) /* don't put "," here. */
+
+#define smmu_bypass_cfg \
+ { \
+ .reg = TEGRA_MC_BASE + MC_SMMU_BYPASS_CONFIG, \
+ .val = 0x00000000, \
+ }
+
+#define _START_OF_TABLE_ \
+ { \
+ .reg = 0xCAFE05C7, \
+ .val = 0x00000000, \
+ }
+
+#define _END_OF_TABLE_ \
+ { \
+ .reg = 0xFFFFFFFF, \
+ .val = 0xFFFFFFFF, \
+ }
+
+static smmu_regs_t smmu_ctx_regs[] = {
+ _START_OF_TABLE_,
+ mc_make_sid_security_cfg(SCEW),
+ mc_make_sid_security_cfg(AFIR),
+ mc_make_sid_security_cfg(NVDISPLAYR1),
+ mc_make_sid_security_cfg(XUSB_DEVR),
+ mc_make_sid_security_cfg(VICSRD1),
+ mc_make_sid_security_cfg(NVENCSWR),
+ mc_make_sid_security_cfg(TSECSRDB),
+ mc_make_sid_security_cfg(AXISW),
+ mc_make_sid_security_cfg(SDMMCWAB),
+ mc_make_sid_security_cfg(AONDMAW),
+ mc_make_sid_security_cfg(GPUSWR2),
+ mc_make_sid_security_cfg(SATAW),
+ mc_make_sid_security_cfg(UFSHCW),
+ mc_make_sid_security_cfg(AFIW),
+ mc_make_sid_security_cfg(SDMMCR),
+ mc_make_sid_security_cfg(SCEDMAW),
+ mc_make_sid_security_cfg(UFSHCR),
+ mc_make_sid_security_cfg(SDMMCWAA),
+ mc_make_sid_security_cfg(APEDMAW),
+ mc_make_sid_security_cfg(SESWR),
+ mc_make_sid_security_cfg(MPCORER),
+ mc_make_sid_security_cfg(PTCR),
+ mc_make_sid_security_cfg(BPMPW),
+ mc_make_sid_security_cfg(ETRW),
+ mc_make_sid_security_cfg(GPUSRD),
+ mc_make_sid_security_cfg(VICSWR),
+ mc_make_sid_security_cfg(SCEDMAR),
+ mc_make_sid_security_cfg(HDAW),
+ mc_make_sid_security_cfg(ISPWA),
+ mc_make_sid_security_cfg(EQOSW),
+ mc_make_sid_security_cfg(XUSB_HOSTW),
+ mc_make_sid_security_cfg(TSECSWR),
+ mc_make_sid_security_cfg(SDMMCRAA),
+ mc_make_sid_security_cfg(APER),
+ mc_make_sid_security_cfg(VIW),
+ mc_make_sid_security_cfg(APEW),
+ mc_make_sid_security_cfg(AXISR),
+ mc_make_sid_security_cfg(SDMMCW),
+ mc_make_sid_security_cfg(BPMPDMAW),
+ mc_make_sid_security_cfg(ISPRA),
+ mc_make_sid_security_cfg(NVDECSWR),
+ mc_make_sid_security_cfg(XUSB_DEVW),
+ mc_make_sid_security_cfg(NVDECSRD),
+ mc_make_sid_security_cfg(MPCOREW),
+ mc_make_sid_security_cfg(NVDISPLAYR),
+ mc_make_sid_security_cfg(BPMPDMAR),
+ mc_make_sid_security_cfg(NVJPGSWR),
+ mc_make_sid_security_cfg(NVDECSRD1),
+ mc_make_sid_security_cfg(TSECSRD),
+ mc_make_sid_security_cfg(NVJPGSRD),
+ mc_make_sid_security_cfg(SDMMCWA),
+ mc_make_sid_security_cfg(SCER),
+ mc_make_sid_security_cfg(XUSB_HOSTR),
+ mc_make_sid_security_cfg(VICSRD),
+ mc_make_sid_security_cfg(AONDMAR),
+ mc_make_sid_security_cfg(AONW),
+ mc_make_sid_security_cfg(SDMMCRA),
+ mc_make_sid_security_cfg(HOST1XDMAR),
+ mc_make_sid_security_cfg(EQOSR),
+ mc_make_sid_security_cfg(SATAR),
+ mc_make_sid_security_cfg(BPMPR),
+ mc_make_sid_security_cfg(HDAR),
+ mc_make_sid_security_cfg(SDMMCRAB),
+ mc_make_sid_security_cfg(ETRR),
+ mc_make_sid_security_cfg(AONR),
+ mc_make_sid_security_cfg(APEDMAR),
+ mc_make_sid_security_cfg(SESRD),
+ mc_make_sid_security_cfg(NVENCSRD),
+ mc_make_sid_security_cfg(GPUSWR),
+ mc_make_sid_security_cfg(TSECSWRB),
+ mc_make_sid_security_cfg(ISPWB),
+ mc_make_sid_security_cfg(GPUSRD2),
+ mc_make_sid_override_cfg(APER),
+ mc_make_sid_override_cfg(VICSRD),
+ mc_make_sid_override_cfg(NVENCSRD),
+ mc_make_sid_override_cfg(NVJPGSWR),
+ mc_make_sid_override_cfg(AONW),
+ mc_make_sid_override_cfg(BPMPR),
+ mc_make_sid_override_cfg(BPMPW),
+ mc_make_sid_override_cfg(HDAW),
+ mc_make_sid_override_cfg(NVDISPLAYR1),
+ mc_make_sid_override_cfg(APEDMAR),
+ mc_make_sid_override_cfg(AFIR),
+ mc_make_sid_override_cfg(AXISR),
+ mc_make_sid_override_cfg(VICSRD1),
+ mc_make_sid_override_cfg(TSECSRD),
+ mc_make_sid_override_cfg(BPMPDMAW),
+ mc_make_sid_override_cfg(MPCOREW),
+ mc_make_sid_override_cfg(XUSB_HOSTR),
+ mc_make_sid_override_cfg(GPUSWR),
+ mc_make_sid_override_cfg(XUSB_DEVR),
+ mc_make_sid_override_cfg(UFSHCW),
+ mc_make_sid_override_cfg(XUSB_HOSTW),
+ mc_make_sid_override_cfg(SDMMCWAB),
+ mc_make_sid_override_cfg(SATAW),
+ mc_make_sid_override_cfg(SCEDMAR),
+ mc_make_sid_override_cfg(HOST1XDMAR),
+ mc_make_sid_override_cfg(SDMMCWA),
+ mc_make_sid_override_cfg(APEDMAW),
+ mc_make_sid_override_cfg(SESWR),
+ mc_make_sid_override_cfg(AXISW),
+ mc_make_sid_override_cfg(AONDMAW),
+ mc_make_sid_override_cfg(TSECSWRB),
+ mc_make_sid_override_cfg(MPCORER),
+ mc_make_sid_override_cfg(ISPWB),
+ mc_make_sid_override_cfg(AONR),
+ mc_make_sid_override_cfg(BPMPDMAR),
+ mc_make_sid_override_cfg(HDAR),
+ mc_make_sid_override_cfg(SDMMCRA),
+ mc_make_sid_override_cfg(ETRW),
+ mc_make_sid_override_cfg(GPUSWR2),
+ mc_make_sid_override_cfg(EQOSR),
+ mc_make_sid_override_cfg(TSECSWR),
+ mc_make_sid_override_cfg(ETRR),
+ mc_make_sid_override_cfg(NVDECSRD),
+ mc_make_sid_override_cfg(TSECSRDB),
+ mc_make_sid_override_cfg(SDMMCRAA),
+ mc_make_sid_override_cfg(NVDECSRD1),
+ mc_make_sid_override_cfg(SDMMCR),
+ mc_make_sid_override_cfg(NVJPGSRD),
+ mc_make_sid_override_cfg(SCEDMAW),
+ mc_make_sid_override_cfg(SDMMCWAA),
+ mc_make_sid_override_cfg(APEW),
+ mc_make_sid_override_cfg(AONDMAR),
+ mc_make_sid_override_cfg(PTCR),
+ mc_make_sid_override_cfg(SCER),
+ mc_make_sid_override_cfg(ISPRA),
+ mc_make_sid_override_cfg(ISPWA),
+ mc_make_sid_override_cfg(VICSWR),
+ mc_make_sid_override_cfg(SESRD),
+ mc_make_sid_override_cfg(SDMMCW),
+ mc_make_sid_override_cfg(SDMMCRAB),
+ mc_make_sid_override_cfg(EQOSW),
+ mc_make_sid_override_cfg(GPUSRD2),
+ mc_make_sid_override_cfg(SCEW),
+ mc_make_sid_override_cfg(GPUSRD),
+ mc_make_sid_override_cfg(NVDECSWR),
+ mc_make_sid_override_cfg(XUSB_DEVW),
+ mc_make_sid_override_cfg(SATAR),
+ mc_make_sid_override_cfg(NVDISPLAYR),
+ mc_make_sid_override_cfg(VIW),
+ mc_make_sid_override_cfg(UFSHCR),
+ mc_make_sid_override_cfg(NVENCSWR),
+ mc_make_sid_override_cfg(AFIW),
+ smmu_make_gnsr0_nsec_cfg(CR0),
+ smmu_make_gnsr0_sec_cfg(IDR0),
+ smmu_make_gnsr0_sec_cfg(IDR1),
+ smmu_make_gnsr0_sec_cfg(IDR2),
+ smmu_make_gnsr0_nsec_cfg(GFSR),
+ smmu_make_gnsr0_nsec_cfg(GFSYNR0),
+ smmu_make_gnsr0_nsec_cfg(GFSYNR1),
+ smmu_make_gnsr0_nsec_cfg(TLBGSTATUS),
+ smmu_make_gnsr0_nsec_cfg(PIDR2),
+ smmu_make_smrg_group(0),
+ smmu_make_smrg_group(1),
+ smmu_make_smrg_group(2),
+ smmu_make_smrg_group(3),
+ smmu_make_smrg_group(4),
+ smmu_make_smrg_group(5),
+ smmu_make_smrg_group(6),
+ smmu_make_smrg_group(7),
+ smmu_make_smrg_group(8),
+ smmu_make_smrg_group(9),
+ smmu_make_smrg_group(10),
+ smmu_make_smrg_group(11),
+ smmu_make_smrg_group(12),
+ smmu_make_smrg_group(13),
+ smmu_make_smrg_group(14),
+ smmu_make_smrg_group(15),
+ smmu_make_smrg_group(16),
+ smmu_make_smrg_group(17),
+ smmu_make_smrg_group(18),
+ smmu_make_smrg_group(19),
+ smmu_make_smrg_group(20),
+ smmu_make_smrg_group(21),
+ smmu_make_smrg_group(22),
+ smmu_make_smrg_group(23),
+ smmu_make_smrg_group(24),
+ smmu_make_smrg_group(25),
+ smmu_make_smrg_group(26),
+ smmu_make_smrg_group(27),
+ smmu_make_smrg_group(28),
+ smmu_make_smrg_group(29),
+ smmu_make_smrg_group(30),
+ smmu_make_smrg_group(31),
+ smmu_make_smrg_group(32),
+ smmu_make_smrg_group(33),
+ smmu_make_smrg_group(34),
+ smmu_make_smrg_group(35),
+ smmu_make_smrg_group(36),
+ smmu_make_smrg_group(37),
+ smmu_make_smrg_group(38),
+ smmu_make_smrg_group(39),
+ smmu_make_smrg_group(40),
+ smmu_make_smrg_group(41),
+ smmu_make_smrg_group(42),
+ smmu_make_smrg_group(43),
+ smmu_make_smrg_group(44),
+ smmu_make_smrg_group(45),
+ smmu_make_smrg_group(46),
+ smmu_make_smrg_group(47),
+ smmu_make_smrg_group(48),
+ smmu_make_smrg_group(49),
+ smmu_make_smrg_group(50),
+ smmu_make_smrg_group(51),
+ smmu_make_smrg_group(52),
+ smmu_make_smrg_group(53),
+ smmu_make_smrg_group(54),
+ smmu_make_smrg_group(55),
+ smmu_make_smrg_group(56),
+ smmu_make_smrg_group(57),
+ smmu_make_smrg_group(58),
+ smmu_make_smrg_group(59),
+ smmu_make_smrg_group(60),
+ smmu_make_smrg_group(61),
+ smmu_make_smrg_group(62),
+ smmu_make_smrg_group(63),
+ smmu_make_cb_group(0),
+ smmu_make_cb_group(1),
+ smmu_make_cb_group(2),
+ smmu_make_cb_group(3),
+ smmu_make_cb_group(4),
+ smmu_make_cb_group(5),
+ smmu_make_cb_group(6),
+ smmu_make_cb_group(7),
+ smmu_make_cb_group(8),
+ smmu_make_cb_group(9),
+ smmu_make_cb_group(10),
+ smmu_make_cb_group(11),
+ smmu_make_cb_group(12),
+ smmu_make_cb_group(13),
+ smmu_make_cb_group(14),
+ smmu_make_cb_group(15),
+ smmu_make_cb_group(16),
+ smmu_make_cb_group(17),
+ smmu_make_cb_group(18),
+ smmu_make_cb_group(19),
+ smmu_make_cb_group(20),
+ smmu_make_cb_group(21),
+ smmu_make_cb_group(22),
+ smmu_make_cb_group(23),
+ smmu_make_cb_group(24),
+ smmu_make_cb_group(25),
+ smmu_make_cb_group(26),
+ smmu_make_cb_group(27),
+ smmu_make_cb_group(28),
+ smmu_make_cb_group(29),
+ smmu_make_cb_group(30),
+ smmu_make_cb_group(31),
+ smmu_make_cb_group(32),
+ smmu_make_cb_group(33),
+ smmu_make_cb_group(34),
+ smmu_make_cb_group(35),
+ smmu_make_cb_group(36),
+ smmu_make_cb_group(37),
+ smmu_make_cb_group(38),
+ smmu_make_cb_group(39),
+ smmu_make_cb_group(40),
+ smmu_make_cb_group(41),
+ smmu_make_cb_group(42),
+ smmu_make_cb_group(43),
+ smmu_make_cb_group(44),
+ smmu_make_cb_group(45),
+ smmu_make_cb_group(46),
+ smmu_make_cb_group(47),
+ smmu_make_cb_group(48),
+ smmu_make_cb_group(49),
+ smmu_make_cb_group(50),
+ smmu_make_cb_group(51),
+ smmu_make_cb_group(52),
+ smmu_make_cb_group(53),
+ smmu_make_cb_group(54),
+ smmu_make_cb_group(55),
+ smmu_make_cb_group(56),
+ smmu_make_cb_group(57),
+ smmu_make_cb_group(58),
+ smmu_make_cb_group(59),
+ smmu_make_cb_group(60),
+ smmu_make_cb_group(61),
+ smmu_make_cb_group(62),
+ smmu_make_cb_group(63),
+ smmu_bypass_cfg, /* TBU settings */
+ _END_OF_TABLE_,
+};
+
+/*
+ * Save SMMU settings before "System Suspend"
+ */
+void tegra_smmu_save_context(void)
+{
+ uint32_t i;
+#if DEBUG
+ uint32_t reg_id1, pgshift, cb_size;
+
+ /* sanity check SMMU settings c*/
+ reg_id1 = mmio_read_32((TEGRA_SMMU_BASE + SMMU_GNSR0_IDR1));
+ pgshift = (reg_id1 & ID1_PAGESIZE) ? 16 : 12;
+ cb_size = (2 << pgshift) * \
+ (1 << (((reg_id1 >> ID1_NUMPAGENDXB_SHIFT) & ID1_NUMPAGENDXB_MASK) + 1));
+
+ assert(!((pgshift != PGSHIFT) || (cb_size != CB_SIZE)));
+#endif
+
+ /* index of _END_OF_TABLE_ */
+ smmu_ctx_regs[0].val = ARRAY_SIZE(smmu_ctx_regs) - 1;
+
+ /* save SMMU register values */
+ for (i = 1; i < ARRAY_SIZE(smmu_ctx_regs) - 1; i++)
+ smmu_ctx_regs[i].val = mmio_read_32(smmu_ctx_regs[i].reg);
+
+ /* save the SMMU table address */
+ mmio_write_32(TEGRA_SCRATCH_BASE + SECURE_SCRATCH_RSV11_LO,
+ (uint32_t)(unsigned long)smmu_ctx_regs);
+ mmio_write_32(TEGRA_SCRATCH_BASE + SECURE_SCRATCH_RSV11_HI,
+ (uint32_t)(((unsigned long)smmu_ctx_regs) >> 32));
+}
+
+/*
+ * Init SMMU during boot or "System Suspend" exit
+ */
+void tegra_smmu_init(void)
+{
+ uint32_t val;
+
+ /* Program the SMMU pagesize */
+ val = tegra_smmu_read_32(SMMU_GSR0_SECURE_ACR);
+ val |= SMMU_GSR0_PGSIZE_64K;
+ tegra_smmu_write_32(SMMU_GSR0_SECURE_ACR, val);
+}