[PATCH v1 1/3] tests/qtest/ast2700-smc-test: Add Data FIFO mode test

[Jamin Lin <jamin_lin@aspeedtech.com>]

Add two qtest cases exercising the new AST2700 Data FIFO-based flash
access path (R_DATA_FIFO at spi_base + 0x200).

Write_page_datafifo sends the page-program command and data through
the FIFO port, then verifies the result via the regular read path.
Read_page_datafifo writes a page the regular way, then reads it back
through the FIFO port, so both directions are checked independently.

Signed-off-by: Jamin Lin <jamin_lin@aspeedtech.com>
---
 tests/qtest/aspeed-smc-utils.h |   4 ++
 tests/qtest/aspeed-smc-utils.c | 102 +++++++++++++++++++++++++++++++++
 tests/qtest/ast2700-smc-test.c |   4 ++
 3 files changed, 110 insertions(+)

diff --git a/tests/qtest/aspeed-smc-utils.h b/tests/qtest/aspeed-smc-utils.h
index e2fd8ff1bd..485cb92ede 100644
--- a/tests/qtest/aspeed-smc-utils.h
+++ b/tests/qtest/aspeed-smc-utils.h
@@ -45,6 +45,8 @@
 #define   CTRL_WRITEMODE       0x2
 #define   CTRL_USERMODE        0x3
 #define SR_WEL BIT(1)
+/* Data fifo */
+#define R_DATA_FIFO 0x200
 
 /*
  * Flash commands
@@ -90,5 +92,7 @@ void aspeed_smc_test_status_reg_write_protection(const void *data);
 void aspeed_smc_test_write_block_protect(const void *data);
 void aspeed_smc_test_write_block_protect_bottom_bit(const void *data);
 void aspeed_smc_test_write_page_qpi(const void *data);
+void aspeed_smc_test_write_page_datafifo(const void *data);
+void aspeed_smc_test_read_page_datafifo(const void *data);
 
 #endif /* TESTS_ASPEED_SMC_UTILS_H */
diff --git a/tests/qtest/aspeed-smc-utils.c b/tests/qtest/aspeed-smc-utils.c
index c27d09e767..a1be4e02f8 100644
--- a/tests/qtest/aspeed-smc-utils.c
+++ b/tests/qtest/aspeed-smc-utils.c
@@ -73,6 +73,28 @@ static inline uint32_t flash_readl(const AspeedSMCTestData *data,
     return qtest_readl(data->s, data->flash_base + offset);
 }
 
+/*
+ * Data FIFO port, in spi_base's register bank (not flash_base). Accesses
+ * through the FIFO require the complete user-mode transaction (opcode,
+ * address, and data). Assumes CS0, whose FIFO slot is at R_DATA_FIFO.
+ */
+static inline void datafifo_writeb(const AspeedSMCTestData *data,
+                                   uint8_t value)
+{
+    qtest_writeb(data->s, data->spi_base + R_DATA_FIFO, value);
+}
+
+static inline void datafifo_writel(const AspeedSMCTestData *data,
+                                   uint32_t value)
+{
+    spi_writel(data, R_DATA_FIFO, value);
+}
+
+static inline uint32_t datafifo_readl(const AspeedSMCTestData *data)
+{
+    return spi_readl(data, R_DATA_FIFO);
+}
+
 static void spi_conf(const AspeedSMCTestData *data, uint32_t value)
 {
     uint32_t conf = spi_readl(data, R_CONF);
@@ -684,3 +706,83 @@ void aspeed_smc_test_write_page_qpi(const void *data)
     flash_reset(test_data);
 }
 
+void aspeed_smc_test_write_page_datafifo(const void *data)
+{
+    const AspeedSMCTestData *test_data = (const AspeedSMCTestData *)data;
+    uint32_t my_page_addr = test_data->page_addr;
+    uint32_t some_page_addr = my_page_addr + FLASH_PAGE_SIZE;
+    uint32_t page[FLASH_PAGE_SIZE / 4];
+    int i;
+
+    spi_conf(test_data, 1 << (CONF_ENABLE_W0 + test_data->cs));
+
+    /*
+     * Send the complete user-mode transaction (opcode, address, data)
+     * through the Data FIFO port.
+     */
+    spi_ctrl_start_user(test_data);
+    datafifo_writeb(test_data, EN_4BYTE_ADDR);
+    datafifo_writeb(test_data, WREN);
+    datafifo_writeb(test_data, PP);
+    datafifo_writel(test_data, make_be32(my_page_addr));
+
+    for (i = 0; i < FLASH_PAGE_SIZE / 4; i++) {
+        datafifo_writel(test_data, make_be32(my_page_addr + i * 4));
+    }
+    spi_ctrl_stop_user(test_data);
+
+    /* Check what was written, using the regular read path */
+    read_page(test_data, my_page_addr, page);
+    for (i = 0; i < FLASH_PAGE_SIZE / 4; i++) {
+        g_assert_cmphex(page[i], ==, my_page_addr + i * 4);
+    }
+
+    /* Check some other page. It should be full of 0xff */
+    read_page(test_data, some_page_addr, page);
+    for (i = 0; i < FLASH_PAGE_SIZE / 4; i++) {
+        g_assert_cmphex(page[i], ==, 0xffffffff);
+    }
+
+    flash_reset(test_data);
+}
+
+void aspeed_smc_test_read_page_datafifo(const void *data)
+{
+    const AspeedSMCTestData *test_data = (const AspeedSMCTestData *)data;
+    uint32_t my_page_addr = test_data->page_addr;
+    uint32_t page[FLASH_PAGE_SIZE / 4];
+    int i;
+
+    spi_conf(test_data, 1 << (CONF_ENABLE_W0 + test_data->cs));
+
+    /* Write the page the regular way */
+    spi_ctrl_start_user(test_data);
+    flash_writeb(test_data, 0, EN_4BYTE_ADDR);
+    flash_writeb(test_data, 0, WREN);
+    flash_writeb(test_data, 0, PP);
+    flash_writel(test_data, 0, make_be32(my_page_addr));
+    for (i = 0; i < FLASH_PAGE_SIZE / 4; i++) {
+        flash_writel(test_data, 0, make_be32(my_page_addr + i * 4));
+    }
+    spi_ctrl_stop_user(test_data);
+
+    /*
+     * Read it back through the data FIFO port, again sending the whole
+     * transaction (opcode, address, data) through it.
+     */
+    spi_ctrl_start_user(test_data);
+    datafifo_writeb(test_data, EN_4BYTE_ADDR);
+    datafifo_writeb(test_data, READ);
+    datafifo_writel(test_data, make_be32(my_page_addr));
+    for (i = 0; i < FLASH_PAGE_SIZE / 4; i++) {
+        page[i] = make_be32(datafifo_readl(test_data));
+    }
+    spi_ctrl_stop_user(test_data);
+
+    for (i = 0; i < FLASH_PAGE_SIZE / 4; i++) {
+        g_assert_cmphex(page[i], ==, my_page_addr + i * 4);
+    }
+
+    flash_reset(test_data);
+}
+
diff --git a/tests/qtest/ast2700-smc-test.c b/tests/qtest/ast2700-smc-test.c
index 33fc47230e..58f796ce0b 100644
--- a/tests/qtest/ast2700-smc-test.c
+++ b/tests/qtest/ast2700-smc-test.c
@@ -52,6 +52,10 @@ static void test_ast2700_evb(AspeedSMCTestData *data)
                         data, aspeed_smc_test_read_status_reg);
     qtest_add_data_func("/ast2700/smc/write_page_qpi",
                         data, aspeed_smc_test_write_page_qpi);
+    qtest_add_data_func("/ast2700/smc/write_page_datafifo",
+                        data, aspeed_smc_test_write_page_datafifo);
+    qtest_add_data_func("/ast2700/smc/read_page_datafifo",
+                        data, aspeed_smc_test_read_page_datafifo);
 }
 
 int main(int argc, char **argv)
-- 
2.43.0