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Message-Id: <20230208205653.177700-7-elder@linaro.org>
Date: Wed, 8 Feb 2023 14:56:50 -0600
From: Alex Elder <elder@...aro.org>
To: davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org,
pabeni@...hat.com
Cc: caleb.connolly@...aro.org, mka@...omium.org, evgreen@...omium.org,
andersson@...nel.org, quic_cpratapa@...cinc.com,
quic_avuyyuru@...cinc.com, quic_jponduru@...cinc.com,
quic_subashab@...cinc.com, elder@...nel.org,
netdev@...r.kernel.org, linux-arm-msm@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: [PATCH net-next 6/9] net: ipa: GSI register cleanup
Move some static inline function definitions out of "gsi_reg.h" and
into "gsi.c", which is the only place they're used. Rename them so
their names identify the register they're associated with.
Move the gsi_channel_type enumerated type definition below the
offset and field definitions for the CH_C_CNTXT_0 register where
it's used.
Signed-off-by: Alex Elder <elder@...aro.org>
---
drivers/net/ipa/gsi.c | 41 +++++++++++++++++++++++++---
drivers/net/ipa/gsi_reg.h | 56 +++++++++------------------------------
2 files changed, 50 insertions(+), 47 deletions(-)
diff --git a/drivers/net/ipa/gsi.c b/drivers/net/ipa/gsi.c
index da90785e8df52..2cb1710f6ac3f 100644
--- a/drivers/net/ipa/gsi.c
+++ b/drivers/net/ipa/gsi.c
@@ -182,6 +182,41 @@ static bool gsi_channel_initialized(struct gsi_channel *channel)
return !!channel->gsi;
}
+/* Encode the channel protocol for the CH_C_CNTXT_0 register */
+static u32 ch_c_cntxt_0_type_encode(enum ipa_version version,
+ enum gsi_channel_type type)
+{
+ u32 val;
+
+ val = u32_encode_bits(type, CHTYPE_PROTOCOL_FMASK);
+ if (version < IPA_VERSION_4_5)
+ return val;
+
+ type >>= hweight32(CHTYPE_PROTOCOL_FMASK);
+
+ return val | u32_encode_bits(type, CHTYPE_PROTOCOL_MSB_FMASK);
+}
+
+/* Encode a channel ring buffer length for the CH_C_CNTXT_1 register */
+static u32 ch_c_cntxt_1_length_encode(enum ipa_version version, u32 length)
+{
+ if (version < IPA_VERSION_4_9)
+ return u32_encode_bits(length, GENMASK(15, 0));
+
+ return u32_encode_bits(length, GENMASK(19, 0));
+}
+
+/* Encode the length of the event channel ring buffer for the
+ * EV_CH_E_CNTXT_1 register.
+ */
+static u32 ev_ch_e_cntxt_1_length_encode(enum ipa_version version, u32 length)
+{
+ if (version < IPA_VERSION_4_9)
+ return u32_encode_bits(length, GENMASK(15, 0));
+
+ return u32_encode_bits(length, GENMASK(19, 0));
+}
+
/* Update the GSI IRQ type register with the cached value */
static void gsi_irq_type_update(struct gsi *gsi, u32 val)
{
@@ -676,7 +711,7 @@ static void gsi_evt_ring_program(struct gsi *gsi, u32 evt_ring_id)
iowrite32(val, gsi->virt + GSI_EV_CH_E_CNTXT_0_OFFSET(evt_ring_id));
size = ring->count * GSI_RING_ELEMENT_SIZE;
- val = ev_r_length_encoded(gsi->version, size);
+ val = ev_ch_e_cntxt_1_length_encode(gsi->version, size);
iowrite32(val, gsi->virt + GSI_EV_CH_E_CNTXT_1_OFFSET(evt_ring_id));
/* The context 2 and 3 registers store the low-order and
@@ -765,14 +800,14 @@ static void gsi_channel_program(struct gsi_channel *channel, bool doorbell)
u32 val;
/* We program all channels as GPI type/protocol */
- val = chtype_protocol_encoded(gsi->version, GSI_CHANNEL_TYPE_GPI);
+ val = ch_c_cntxt_0_type_encode(gsi->version, GSI_CHANNEL_TYPE_GPI);
if (channel->toward_ipa)
val |= CHTYPE_DIR_FMASK;
val |= u32_encode_bits(channel->evt_ring_id, ERINDEX_FMASK);
val |= u32_encode_bits(GSI_RING_ELEMENT_SIZE, ELEMENT_SIZE_FMASK);
iowrite32(val, gsi->virt + GSI_CH_C_CNTXT_0_OFFSET(channel_id));
- val = r_length_encoded(gsi->version, size);
+ val = ch_c_cntxt_1_length_encode(gsi->version, size);
iowrite32(val, gsi->virt + GSI_CH_C_CNTXT_1_OFFSET(channel_id));
/* The context 2 and 3 registers store the low-order and
diff --git a/drivers/net/ipa/gsi_reg.h b/drivers/net/ipa/gsi_reg.h
index 6af70b0b3a6a5..d171f65d41983 100644
--- a/drivers/net/ipa/gsi_reg.h
+++ b/drivers/net/ipa/gsi_reg.h
@@ -62,6 +62,18 @@
/* All other register offsets are relative to gsi->virt */
+#define GSI_CH_C_CNTXT_0_OFFSET(ch) \
+ (0x0001c000 + 0x4000 * GSI_EE_AP + 0x80 * (ch))
+#define CHTYPE_PROTOCOL_FMASK GENMASK(2, 0)
+#define CHTYPE_DIR_FMASK GENMASK(3, 3)
+#define EE_FMASK GENMASK(7, 4)
+#define CHID_FMASK GENMASK(12, 8)
+/* The next field is present for IPA v4.5 and above */
+#define CHTYPE_PROTOCOL_MSB_FMASK GENMASK(13, 13)
+#define ERINDEX_FMASK GENMASK(18, 14)
+#define CHSTATE_FMASK GENMASK(23, 20)
+#define ELEMENT_SIZE_FMASK GENMASK(31, 24)
+
/** enum gsi_channel_type - CHTYPE_PROTOCOL field values in CH_C_CNTXT_0 */
enum gsi_channel_type {
GSI_CHANNEL_TYPE_MHI = 0x0,
@@ -76,46 +88,9 @@ enum gsi_channel_type {
GSI_CHANNEL_TYPE_11AD = 0x9,
};
-#define GSI_CH_C_CNTXT_0_OFFSET(ch) \
- (0x0001c000 + 0x4000 * GSI_EE_AP + 0x80 * (ch))
-#define CHTYPE_PROTOCOL_FMASK GENMASK(2, 0)
-#define CHTYPE_DIR_FMASK GENMASK(3, 3)
-#define EE_FMASK GENMASK(7, 4)
-#define CHID_FMASK GENMASK(12, 8)
-/* The next field is present for IPA v4.5 and above */
-#define CHTYPE_PROTOCOL_MSB_FMASK GENMASK(13, 13)
-#define ERINDEX_FMASK GENMASK(18, 14)
-#define CHSTATE_FMASK GENMASK(23, 20)
-#define ELEMENT_SIZE_FMASK GENMASK(31, 24)
-
-/* Encoded value for CH_C_CNTXT_0 register channel protocol fields */
-static inline u32
-chtype_protocol_encoded(enum ipa_version version, enum gsi_channel_type type)
-{
- u32 val;
-
- val = u32_encode_bits(type, CHTYPE_PROTOCOL_FMASK);
- if (version < IPA_VERSION_4_5)
- return val;
-
- /* Encode upper bit(s) as well */
- type >>= hweight32(CHTYPE_PROTOCOL_FMASK);
- val |= u32_encode_bits(type, CHTYPE_PROTOCOL_MSB_FMASK);
-
- return val;
-}
-
#define GSI_CH_C_CNTXT_1_OFFSET(ch) \
(0x0001c004 + 0x4000 * GSI_EE_AP + 0x80 * (ch))
-/* Encoded value for CH_C_CNTXT_1 register R_LENGTH field */
-static inline u32 r_length_encoded(enum ipa_version version, u32 length)
-{
- if (version < IPA_VERSION_4_9)
- return u32_encode_bits(length, GENMASK(15, 0));
- return u32_encode_bits(length, GENMASK(19, 0));
-}
-
#define GSI_CH_C_CNTXT_2_OFFSET(ch) \
(0x0001c008 + 0x4000 * GSI_EE_AP + 0x80 * (ch))
@@ -167,13 +142,6 @@ enum gsi_prefetch_mode {
#define GSI_EV_CH_E_CNTXT_1_OFFSET(ev) \
(0x0001d004 + 0x4000 * GSI_EE_AP + 0x80 * (ev))
-/* Encoded value for EV_CH_C_CNTXT_1 register EV_R_LENGTH field */
-static inline u32 ev_r_length_encoded(enum ipa_version version, u32 length)
-{
- if (version < IPA_VERSION_4_9)
- return u32_encode_bits(length, GENMASK(15, 0));
- return u32_encode_bits(length, GENMASK(19, 0));
-}
#define GSI_EV_CH_E_CNTXT_2_OFFSET(ev) \
(0x0001d008 + 0x4000 * GSI_EE_AP + 0x80 * (ev))
--
2.34.1
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