[PATCH v2 2/9] aspeed/smc: Add AST1030 support

[Jamin Lin <jamin_lin@aspeedtech.com>]

From: Steven Lee <steven_lee@aspeedtech.com>

AST1030 spi controller's address decoding unit is 1MB that is identical
to ast2600, but fmc address decoding unit is 512kb.
Introduce seg_to_reg and reg_to_seg handlers for ast1030 fmc controller.
In addition, add ast1030 fmc, spi1, and spi2 class init handler.

Signed-off-by: Troy Lee <troy_lee@aspeedtech.com>
Signed-off-by: Jamin Lin <jamin_lin@aspeedtech.com>
Signed-off-by: Steven Lee <steven_lee@aspeedtech.com>
---
 hw/ssi/aspeed_smc.c | 160 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 160 insertions(+)

diff --git a/hw/ssi/aspeed_smc.c b/hw/ssi/aspeed_smc.c
index 48305e1574..81af783729 100644
--- a/hw/ssi/aspeed_smc.c
+++ b/hw/ssi/aspeed_smc.c
@@ -1696,6 +1696,163 @@ static const TypeInfo aspeed_2600_spi2_info = {
     .class_init = aspeed_2600_spi2_class_init,
 };
 
+/*
+ * The FMC Segment Registers of the AST1030 have a 512KB unit.
+ * Only bits [27:19] are used for decoding.
+ */
+#define AST1030_SEG_ADDR_MASK 0x0ff80000
+
+static uint32_t aspeed_1030_smc_segment_to_reg(const AspeedSMCState *s,
+        const AspeedSegments *seg)
+{
+    uint32_t reg = 0;
+
+    /* Disabled segments have a nil register */
+    if (!seg->size) {
+        return 0;
+    }
+
+    reg |= (seg->addr & AST1030_SEG_ADDR_MASK) >> 16; /* start offset */
+    reg |= (seg->addr + seg->size - 1) & AST1030_SEG_ADDR_MASK; /* end offset */
+    return reg;
+}
+
+static void aspeed_1030_smc_reg_to_segment(const AspeedSMCState *s,
+        uint32_t reg, AspeedSegments *seg)
+{
+    uint32_t start_offset = (reg << 16) & AST1030_SEG_ADDR_MASK;
+    uint32_t end_offset = reg & AST1030_SEG_ADDR_MASK;
+    AspeedSMCClass *asc = ASPEED_SMC_GET_CLASS(s);
+
+    if (reg) {
+        seg->addr = asc->flash_window_base + start_offset;
+        seg->size = end_offset + (512 * KiB) - start_offset;
+    } else {
+        seg->addr = asc->flash_window_base;
+        seg->size = 0;
+    }
+}
+
+static const uint32_t aspeed_1030_fmc_resets[ASPEED_SMC_R_MAX] = {
+    [R_CONF] = (CONF_FLASH_TYPE_SPI << CONF_FLASH_TYPE0 |
+                            CONF_FLASH_TYPE_SPI << CONF_FLASH_TYPE1),
+};
+
+static const AspeedSegments aspeed_1030_fmc_segments[] = {
+    { 0x0, 128 * MiB }, /* start address is readonly */
+    { 128 * MiB, 128 * MiB }, /* default is disabled but needed for -kernel */
+    { 0x0, 0 }, /* disabled */
+};
+
+static void aspeed_1030_fmc_class_init(ObjectClass *klass, void *data)
+{
+    DeviceClass *dc = DEVICE_CLASS(klass);
+    AspeedSMCClass *asc = ASPEED_SMC_CLASS(klass);
+
+    dc->desc               = "Aspeed 1030 FMC Controller";
+    asc->r_conf            = R_CONF;
+    asc->r_ce_ctrl         = R_CE_CTRL;
+    asc->r_ctrl0           = R_CTRL0;
+    asc->r_timings         = R_TIMINGS;
+    asc->nregs_timings     = 2;
+    asc->conf_enable_w0    = CONF_ENABLE_W0;
+    asc->cs_num_max        = 2;
+    asc->segments          = aspeed_1030_fmc_segments;
+    asc->segment_addr_mask = 0x0ff80ff8;
+    asc->resets            = aspeed_1030_fmc_resets;
+    asc->flash_window_base = 0x80000000;
+    asc->flash_window_size = 0x10000000;
+    asc->features          = ASPEED_SMC_FEATURE_DMA |
+                             ASPEED_SMC_FEATURE_WDT_CONTROL;
+    asc->dma_flash_mask    = 0x0FFFFFFC;
+    asc->dma_dram_mask     = 0x000BFFFC;
+    asc->nregs             = ASPEED_SMC_R_MAX;
+    asc->segment_to_reg    = aspeed_1030_smc_segment_to_reg;
+    asc->reg_to_segment    = aspeed_1030_smc_reg_to_segment;
+    asc->dma_ctrl          = aspeed_2600_smc_dma_ctrl;
+}
+
+static const TypeInfo aspeed_1030_fmc_info = {
+    .name =  "aspeed.fmc-ast1030",
+    .parent = TYPE_ASPEED_SMC,
+    .class_init = aspeed_1030_fmc_class_init,
+};
+
+static const AspeedSegments aspeed_1030_spi1_segments[] = {
+    { 0x0, 128 * MiB }, /* start address is readonly */
+    { 0x0, 0 }, /* disabled */
+};
+
+static void aspeed_1030_spi1_class_init(ObjectClass *klass, void *data)
+{
+    DeviceClass *dc = DEVICE_CLASS(klass);
+    AspeedSMCClass *asc = ASPEED_SMC_CLASS(klass);
+
+    dc->desc               = "Aspeed 1030 SPI1 Controller";
+    asc->r_conf            = R_CONF;
+    asc->r_ce_ctrl         = R_CE_CTRL;
+    asc->r_ctrl0           = R_CTRL0;
+    asc->r_timings         = R_TIMINGS;
+    asc->nregs_timings     = 2;
+    asc->conf_enable_w0    = CONF_ENABLE_W0;
+    asc->cs_num_max        = 2;
+    asc->segments          = aspeed_1030_spi1_segments;
+    asc->segment_addr_mask = 0x0ff00ff0;
+    asc->flash_window_base = 0x90000000;
+    asc->flash_window_size = 0x10000000;
+    asc->features          = ASPEED_SMC_FEATURE_DMA |
+                             ASPEED_SMC_FEATURE_WDT_CONTROL;
+    asc->dma_flash_mask    = 0x0FFFFFFC;
+    asc->dma_dram_mask     = 0x000BFFFC;
+    asc->nregs             = ASPEED_SMC_R_MAX;
+    asc->segment_to_reg    = aspeed_2600_smc_segment_to_reg;
+    asc->reg_to_segment    = aspeed_2600_smc_reg_to_segment;
+    asc->dma_ctrl          = aspeed_2600_smc_dma_ctrl;
+}
+
+static const TypeInfo aspeed_1030_spi1_info = {
+    .name =  "aspeed.spi1-ast1030",
+    .parent = TYPE_ASPEED_SMC,
+    .class_init = aspeed_1030_spi1_class_init,
+};
+static const AspeedSegments aspeed_1030_spi2_segments[] = {
+    { 0x0, 128 * MiB }, /* start address is readonly */
+    { 0x0, 0 }, /* disabled */
+};
+
+static void aspeed_1030_spi2_class_init(ObjectClass *klass, void *data)
+{
+    DeviceClass *dc = DEVICE_CLASS(klass);
+    AspeedSMCClass *asc = ASPEED_SMC_CLASS(klass);
+
+    dc->desc               = "Aspeed 1030 SPI2 Controller";
+    asc->r_conf            = R_CONF;
+    asc->r_ce_ctrl         = R_CE_CTRL;
+    asc->r_ctrl0           = R_CTRL0;
+    asc->r_timings         = R_TIMINGS;
+    asc->nregs_timings     = 2;
+    asc->conf_enable_w0    = CONF_ENABLE_W0;
+    asc->cs_num_max        = 2;
+    asc->segments          = aspeed_1030_spi2_segments;
+    asc->segment_addr_mask = 0x0ff00ff0;
+    asc->flash_window_base = 0xb0000000;
+    asc->flash_window_size = 0x10000000;
+    asc->features          = ASPEED_SMC_FEATURE_DMA |
+                             ASPEED_SMC_FEATURE_WDT_CONTROL;
+    asc->dma_flash_mask    = 0x0FFFFFFC;
+    asc->dma_dram_mask     = 0x000BFFFC;
+    asc->nregs             = ASPEED_SMC_R_MAX;
+    asc->segment_to_reg    = aspeed_2600_smc_segment_to_reg;
+    asc->reg_to_segment    = aspeed_2600_smc_reg_to_segment;
+    asc->dma_ctrl          = aspeed_2600_smc_dma_ctrl;
+}
+
+static const TypeInfo aspeed_1030_spi2_info = {
+    .name =  "aspeed.spi2-ast1030",
+    .parent = TYPE_ASPEED_SMC,
+    .class_init = aspeed_1030_spi2_class_init,
+};
+
 static void aspeed_smc_register_types(void)
 {
     type_register_static(&aspeed_smc_flash_info);
@@ -1709,6 +1866,9 @@ static void aspeed_smc_register_types(void)
     type_register_static(&aspeed_2600_fmc_info);
     type_register_static(&aspeed_2600_spi1_info);
     type_register_static(&aspeed_2600_spi2_info);
+    type_register_static(&aspeed_1030_fmc_info);
+    type_register_static(&aspeed_1030_spi1_info);
+    type_register_static(&aspeed_1030_spi2_info);
 }
 
 type_init(aspeed_smc_register_types)
-- 
2.17.1