net: ipa: define GSI CH_C_QOS register fields

Alex Elder · kuba-moo · commit f50ca7cef7c7 · 2023-02-14T20:39:38.000-08:00
Define the fields within the CH_C_QOS GSI register using an array of
field masks in that register's reg structure.  Use the reg functions
for encoding values in those fields.

One field in the register is present for IPA v4.0-4.2 only, two
others are present starting at IPA v4.5, and one more is there
starting at IPA v4.9.

Drop the "GSI_" prefix in symbols defined in the gsi_prefetch_mode
enumerated type, and define their values using decimal rather than
hexidecimal values.

Signed-off-by: Alex Elder &lt;elder@linaro.org&gt;
Signed-off-by: Jakub Kicinski &lt;kuba@kernel.org&gt;
diff --git a/drivers/net/ipa/gsi.c b/drivers/net/ipa/gsi.c
@@ -889,29 +889,28 @@ static void gsi_channel_program(struct gsi_channel *channel, bool doorbell)
 
 	/* Command channel gets low weighted round-robin priority */
 	if (channel->command)
-		wrr_weight = field_max(WRR_WEIGHT_FMASK);
-	val = u32_encode_bits(wrr_weight, WRR_WEIGHT_FMASK);
+		wrr_weight = reg_field_max(reg, WRR_WEIGHT);
+	val = reg_encode(reg, WRR_WEIGHT, wrr_weight);
 
 	/* Max prefetch is 1 segment (do not set MAX_PREFETCH_FMASK) */
 
 	/* No need to use the doorbell engine starting at IPA v4.0 */
 	if (gsi->version < IPA_VERSION_4_0 && doorbell)
-		val |= USE_DB_ENG_FMASK;
+		val |= reg_bit(reg, USE_DB_ENG);
 
 	/* v4.0 introduces an escape buffer for prefetch.  We use it
 	 * on all but the AP command channel.
 	 */
 	if (gsi->version >= IPA_VERSION_4_0 && !channel->command) {
 		/* If not otherwise set, prefetch buffers are used */
 		if (gsi->version < IPA_VERSION_4_5)
-			val |= USE_ESCAPE_BUF_ONLY_FMASK;
+			val |= reg_bit(reg, USE_ESCAPE_BUF_ONLY);
 		else
-			val |= u32_encode_bits(GSI_ESCAPE_BUF_ONLY,
-					       PREFETCH_MODE_FMASK);
+			val |= reg_encode(reg, PREFETCH_MODE, ESCAPE_BUF_ONLY);
 	}
 	/* All channels set DB_IN_BYTES */
 	if (gsi->version >= IPA_VERSION_4_9)
-		val |= DB_IN_BYTES;
+		val |= reg_bit(reg, DB_IN_BYTES);
 
 	iowrite32(val, gsi->virt + reg_n_offset(reg, channel_id));
 
diff --git a/drivers/net/ipa/gsi_reg.h b/drivers/net/ipa/gsi_reg.h
@@ -121,23 +121,22 @@ enum gsi_channel_type {
 };
 
 /* CH_C_QOS register */
-#define WRR_WEIGHT_FMASK		GENMASK(3, 0)
-#define MAX_PREFETCH_FMASK		GENMASK(8, 8)
-#define USE_DB_ENG_FMASK		GENMASK(9, 9)
-/* The next field is only present for IPA v4.0, v4.1, and v4.2 */
-#define USE_ESCAPE_BUF_ONLY_FMASK	GENMASK(10, 10)
-/* The next two fields are present for IPA v4.5 and above */
-#define PREFETCH_MODE_FMASK		GENMASK(13, 10)
-#define EMPTY_LVL_THRSHOLD_FMASK	GENMASK(23, 16)
-/* The next field is present for IPA v4.9 and above */
-#define DB_IN_BYTES			GENMASK(24, 24)
+enum gsi_reg_ch_c_qos_field_id {
+	WRR_WEIGHT,
+	MAX_PREFETCH,
+	USE_DB_ENG,
+	USE_ESCAPE_BUF_ONLY,				/* IPA v4.0-4.2 */
+	PREFETCH_MODE,					/* IPA v4.5+ */
+	EMPTY_LVL_THRSHOLD,				/* IPA v4.5+ */
+	DB_IN_BYTES,					/* IPA v4.9+ */
+};
 
 /** enum gsi_prefetch_mode - PREFETCH_MODE field in CH_C_QOS */
 enum gsi_prefetch_mode {
-	GSI_USE_PREFETCH_BUFS			= 0x0,
-	GSI_ESCAPE_BUF_ONLY			= 0x1,
-	GSI_SMART_PREFETCH			= 0x2,
-	GSI_FREE_PREFETCH			= 0x3,
+	USE_PREFETCH_BUFS			= 0,
+	ESCAPE_BUF_ONLY				= 1,
+	SMART_PREFETCH				= 2,
+	FREE_PREFETCH				= 3,
 };
 
 /* EV_CH_E_CNTXT_0 register */
diff --git a/drivers/net/ipa/reg/gsi_reg-v3.1.c b/drivers/net/ipa/reg/gsi_reg-v3.1.c
@@ -26,7 +26,15 @@ REG_STRIDE(CH_C_CNTXT_2, ch_c_cntxt_2, 0x0001c008 + 0x4000 * GSI_EE_AP, 0x80);
 
 REG_STRIDE(CH_C_CNTXT_3, ch_c_cntxt_3, 0x0001c00c + 0x4000 * GSI_EE_AP, 0x80);
 
-REG_STRIDE(CH_C_QOS, ch_c_qos, 0x0001c05c + 0x4000 * GSI_EE_AP, 0x80);
+static const u32 reg_ch_c_qos_fmask[] = {
+	[WRR_WEIGHT]					= GENMASK(3, 0),
+						/* Bits 4-7 reserved */
+	[MAX_PREFETCH]					= BIT(8),
+	[USE_DB_ENG]					= BIT(9),
+						/* Bits 10-31 reserved */
+};
+
+REG_STRIDE_FIELDS(CH_C_QOS, ch_c_qos, 0x0001c05c + 0x4000 * GSI_EE_AP, 0x80);
 
 REG(ERROR_LOG, error_log, 0x0001f200 + 0x4000 * GSI_EE_AP);
 
diff --git a/drivers/net/ipa/reg/gsi_reg-v3.5.1.c b/drivers/net/ipa/reg/gsi_reg-v3.5.1.c
@@ -26,7 +26,15 @@ REG_STRIDE(CH_C_CNTXT_2, ch_c_cntxt_2, 0x0001c008 + 0x4000 * GSI_EE_AP, 0x80);
 
 REG_STRIDE(CH_C_CNTXT_3, ch_c_cntxt_3, 0x0001c00c + 0x4000 * GSI_EE_AP, 0x80);
 
-REG_STRIDE(CH_C_QOS, ch_c_qos, 0x0001c05c + 0x4000 * GSI_EE_AP, 0x80);
+static const u32 reg_ch_c_qos_fmask[] = {
+	[WRR_WEIGHT]					= GENMASK(3, 0),
+						/* Bits 4-7 reserved */
+	[MAX_PREFETCH]					= BIT(8),
+	[USE_DB_ENG]					= BIT(9),
+						/* Bits 10-31 reserved */
+};
+
+REG_STRIDE_FIELDS(CH_C_QOS, ch_c_qos, 0x0001c05c + 0x4000 * GSI_EE_AP, 0x80);
 
 REG(ERROR_LOG, error_log, 0x0001f200 + 0x4000 * GSI_EE_AP);
 
diff --git a/drivers/net/ipa/reg/gsi_reg-v4.0.c b/drivers/net/ipa/reg/gsi_reg-v4.0.c
@@ -26,7 +26,16 @@ REG_STRIDE(CH_C_CNTXT_2, ch_c_cntxt_2, 0x0001c008 + 0x4000 * GSI_EE_AP, 0x80);
 
 REG_STRIDE(CH_C_CNTXT_3, ch_c_cntxt_3, 0x0001c00c + 0x4000 * GSI_EE_AP, 0x80);
 
-REG_STRIDE(CH_C_QOS, ch_c_qos, 0x0001c05c + 0x4000 * GSI_EE_AP, 0x80);
+static const u32 reg_ch_c_qos_fmask[] = {
+	[WRR_WEIGHT]					= GENMASK(3, 0),
+						/* Bits 4-7 reserved */
+	[MAX_PREFETCH]					= BIT(8),
+	[USE_DB_ENG]					= BIT(9),
+	[USE_ESCAPE_BUF_ONLY]				= BIT(10),
+						/* Bits 11-31 reserved */
+};
+
+REG_STRIDE_FIELDS(CH_C_QOS, ch_c_qos, 0x0001c05c + 0x4000 * GSI_EE_AP, 0x80);
 
 REG(ERROR_LOG, error_log, 0x0001f200 + 0x4000 * GSI_EE_AP);
 
diff --git a/drivers/net/ipa/reg/gsi_reg-v4.5.c b/drivers/net/ipa/reg/gsi_reg-v4.5.c
@@ -26,7 +26,18 @@ REG_STRIDE(CH_C_CNTXT_2, ch_c_cntxt_2, 0x0001c008 + 0x4000 * GSI_EE_AP, 0x80);
 
 REG_STRIDE(CH_C_CNTXT_3, ch_c_cntxt_3, 0x0001c00c + 0x4000 * GSI_EE_AP, 0x80);
 
-REG_STRIDE(CH_C_QOS, ch_c_qos, 0x0001c05c + 0x4000 * GSI_EE_AP, 0x80);
+static const u32 reg_ch_c_qos_fmask[] = {
+	[WRR_WEIGHT]					= GENMASK(3, 0),
+						/* Bits 4-7 reserved */
+	[MAX_PREFETCH]					= BIT(8),
+	[USE_DB_ENG]					= BIT(9),
+	[PREFETCH_MODE]					= GENMASK(13, 10),
+						/* Bits 14-15 reserved */
+	[EMPTY_LVL_THRSHOLD]				= GENMASK(23, 16),
+						/* Bits 24-31 reserved */
+};
+
+REG_STRIDE_FIELDS(CH_C_QOS, ch_c_qos, 0x0001c05c + 0x4000 * GSI_EE_AP, 0x80);
 
 REG(ERROR_LOG, error_log, 0x0001f200 + 0x4000 * GSI_EE_AP);
 
diff --git a/drivers/net/ipa/reg/gsi_reg-v4.9.c b/drivers/net/ipa/reg/gsi_reg-v4.9.c
@@ -26,7 +26,19 @@ REG_STRIDE(CH_C_CNTXT_2, ch_c_cntxt_2, 0x0001c008 + 0x4000 * GSI_EE_AP, 0x80);
 
 REG_STRIDE(CH_C_CNTXT_3, ch_c_cntxt_3, 0x0001c00c + 0x4000 * GSI_EE_AP, 0x80);
 
-REG_STRIDE(CH_C_QOS, ch_c_qos, 0x0001c05c + 0x4000 * GSI_EE_AP, 0x80);
+static const u32 reg_ch_c_qos_fmask[] = {
+	[WRR_WEIGHT]					= GENMASK(3, 0),
+						/* Bits 4-7 reserved */
+	[MAX_PREFETCH]					= BIT(8),
+	[USE_DB_ENG]					= BIT(9),
+	[PREFETCH_MODE]					= GENMASK(13, 10),
+						/* Bits 14-15 reserved */
+	[EMPTY_LVL_THRSHOLD]				= GENMASK(23, 16),
+	[DB_IN_BYTES]					= BIT(24),
+						/* Bits 25-31 reserved */
+};
+
+REG_STRIDE_FIELDS(CH_C_QOS, ch_c_qos, 0x0001c05c + 0x4000 * GSI_EE_AP, 0x80);
 
 REG(ERROR_LOG, error_log, 0x0001f200 + 0x4000 * GSI_EE_AP);
 
