[PATCH net-next 3/6] net: ipa: define more fields for GSI registers
From: Alex Elder
Date: Mon Feb 13 2023 - 11:22:56 EST
Beyond the CH_C_QOS register, two other registers whose offset is
related to channel number have fields within them.
Define the fields within the CH_C_CNTXT_0 GSI register, using an
enumerated type to identify the register's fields, and define an
array of field masks to use for that register's reg structure.
For the CH_C_CNTXT_1 GSI register, ch_c_cntxt_1_length_encode()
previously hid the difference in bit width in the channel ring
length field. Instead, define a new field CH_R_LENGTH and encode
the ring size with reg_encode().
Signed-off-by: Alex Elder <elder@xxxxxxxxxx>
---
drivers/net/ipa/gsi.c | 31 +++++++++-------------------
drivers/net/ipa/gsi_reg.h | 24 +++++++++++++--------
drivers/net/ipa/reg/gsi_reg-v3.1.c | 23 +++++++++++++++++++--
drivers/net/ipa/reg/gsi_reg-v3.5.1.c | 23 +++++++++++++++++++--
drivers/net/ipa/reg/gsi_reg-v4.0.c | 23 +++++++++++++++++++--
drivers/net/ipa/reg/gsi_reg-v4.5.c | 23 +++++++++++++++++++--
drivers/net/ipa/reg/gsi_reg-v4.9.c | 23 +++++++++++++++++++--
7 files changed, 130 insertions(+), 40 deletions(-)
diff --git a/drivers/net/ipa/gsi.c b/drivers/net/ipa/gsi.c
index cbf4b2d843acb..ff00c833043a9 100644
--- a/drivers/net/ipa/gsi.c
+++ b/drivers/net/ipa/gsi.c
@@ -164,9 +164,6 @@ static void gsi_validate_build(void)
*/
BUILD_BUG_ON(!is_power_of_2(GSI_RING_ELEMENT_SIZE));
- /* The channel element size must fit in this field */
- BUILD_BUG_ON(GSI_RING_ELEMENT_SIZE > field_max(ELEMENT_SIZE_FMASK));
-
/* The event ring element size must fit in this field */
BUILD_BUG_ON(GSI_RING_ELEMENT_SIZE > field_max(EV_ELEMENT_SIZE_FMASK));
}
@@ -185,26 +182,18 @@ static bool gsi_channel_initialized(struct gsi_channel *channel)
/* Encode the channel protocol for the CH_C_CNTXT_0 register */
static u32 ch_c_cntxt_0_type_encode(enum ipa_version version,
+ const struct reg *reg,
enum gsi_channel_type type)
{
u32 val;
- val = u32_encode_bits(type, CHTYPE_PROTOCOL_FMASK);
+ val = reg_encode(reg, CHTYPE_PROTOCOL, type);
if (version < IPA_VERSION_4_5)
return val;
- type >>= hweight32(CHTYPE_PROTOCOL_FMASK);
+ type >>= hweight32(reg_fmask(reg, CHTYPE_PROTOCOL));
- 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));
+ return val | reg_encode(reg, CHTYPE_PROTOCOL_MSB, type);
}
/* Encode the length of the event channel ring buffer for the
@@ -544,7 +533,7 @@ static enum gsi_channel_state gsi_channel_state(struct gsi_channel *channel)
reg = gsi_reg(gsi, CH_C_CNTXT_0);
val = ioread32(virt + reg_n_offset(reg, channel_id));
- return u32_get_bits(val, CHSTATE_FMASK);
+ return reg_decode(reg, CHSTATE, val);
}
/* Issue a channel command and wait for it to complete */
@@ -862,15 +851,15 @@ static void gsi_channel_program(struct gsi_channel *channel, bool doorbell)
reg = gsi_reg(gsi, CH_C_CNTXT_0);
/* We program all channels as GPI type/protocol */
- val = ch_c_cntxt_0_type_encode(gsi->version, GSI_CHANNEL_TYPE_GPI);
+ val = ch_c_cntxt_0_type_encode(gsi->version, reg, 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);
+ val |= reg_bit(reg, CHTYPE_DIR);
+ val |= reg_encode(reg, ERINDEX, channel->evt_ring_id);
+ val |= reg_encode(reg, ELEMENT_SIZE, GSI_RING_ELEMENT_SIZE);
iowrite32(val, gsi->virt + reg_n_offset(reg, channel_id));
reg = gsi_reg(gsi, CH_C_CNTXT_1);
- val = ch_c_cntxt_1_length_encode(gsi->version, size);
+ val = reg_encode(reg, CH_R_LENGTH, size);
iowrite32(val, gsi->virt + reg_n_offset(reg, 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 f625afdfd6d9f..3f1a49a4f7c47 100644
--- a/drivers/net/ipa/gsi_reg.h
+++ b/drivers/net/ipa/gsi_reg.h
@@ -96,15 +96,16 @@ enum gsi_reg_id {
};
/* CH_C_CNTXT_0 register */
-#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_reg_ch_c_cntxt_0_field_id {
+ CHTYPE_PROTOCOL,
+ CHTYPE_DIR,
+ CH_EE,
+ CHID,
+ CHTYPE_PROTOCOL_MSB, /* IPA v4.9+ */
+ ERINDEX,
+ CHSTATE,
+ ELEMENT_SIZE,
+};
/** enum gsi_channel_type - CHTYPE_PROTOCOL field values in CH_C_CNTXT_0 */
enum gsi_channel_type {
@@ -120,6 +121,11 @@ enum gsi_channel_type {
GSI_CHANNEL_TYPE_11AD = 0x9,
};
+/* CH_C_CNTXT_1 register */
+enum gsi_reg_ch_c_cntxt_1_field_id {
+ CH_R_LENGTH,
+};
+
/* CH_C_QOS register */
enum gsi_reg_ch_c_qos_field_id {
WRR_WEIGHT,
diff --git a/drivers/net/ipa/reg/gsi_reg-v3.1.c b/drivers/net/ipa/reg/gsi_reg-v3.1.c
index 56cf487ae4fc6..4aa7a1c52cb35 100644
--- a/drivers/net/ipa/reg/gsi_reg-v3.1.c
+++ b/drivers/net/ipa/reg/gsi_reg-v3.1.c
@@ -18,9 +18,28 @@ REG(INTER_EE_SRC_EV_CH_IRQ_MSK, inter_ee_src_ev_ch_irq_msk,
/* All other register offsets are relative to gsi->virt */
-REG_STRIDE(CH_C_CNTXT_0, ch_c_cntxt_0, 0x0001c000 + 0x4000 * GSI_EE_AP, 0x80);
+static const u32 reg_ch_c_cntxt_0_fmask[] = {
+ [CHTYPE_PROTOCOL] = GENMASK(2, 0),
+ [CHTYPE_DIR] = BIT(3),
+ [CH_EE] = GENMASK(7, 4),
+ [CHID] = GENMASK(12, 8),
+ /* Bit 13 reserved */
+ [ERINDEX] = GENMASK(18, 14),
+ /* Bit 19 reserved */
+ [CHSTATE] = GENMASK(23, 20),
+ [ELEMENT_SIZE] = GENMASK(31, 24),
+};
-REG_STRIDE(CH_C_CNTXT_1, ch_c_cntxt_1, 0x0001c004 + 0x4000 * GSI_EE_AP, 0x80);
+REG_STRIDE_FIELDS(CH_C_CNTXT_0, ch_c_cntxt_0,
+ 0x0001c000 + 0x4000 * GSI_EE_AP, 0x80);
+
+static const u32 reg_ch_c_cntxt_1_fmask[] = {
+ [CH_R_LENGTH] = GENMASK(15, 0),
+ /* Bits 16-31 reserved */
+};
+
+REG_STRIDE_FIELDS(CH_C_CNTXT_1, ch_c_cntxt_1,
+ 0x0001c004 + 0x4000 * GSI_EE_AP, 0x80);
REG_STRIDE(CH_C_CNTXT_2, ch_c_cntxt_2, 0x0001c008 + 0x4000 * GSI_EE_AP, 0x80);
diff --git a/drivers/net/ipa/reg/gsi_reg-v3.5.1.c b/drivers/net/ipa/reg/gsi_reg-v3.5.1.c
index 866bae3ff530b..045061a870032 100644
--- a/drivers/net/ipa/reg/gsi_reg-v3.5.1.c
+++ b/drivers/net/ipa/reg/gsi_reg-v3.5.1.c
@@ -18,9 +18,28 @@ REG(INTER_EE_SRC_EV_CH_IRQ_MSK, inter_ee_src_ev_ch_irq_msk,
/* All other register offsets are relative to gsi->virt */
-REG_STRIDE(CH_C_CNTXT_0, ch_c_cntxt_0, 0x0001c000 + 0x4000 * GSI_EE_AP, 0x80);
+static const u32 reg_ch_c_cntxt_0_fmask[] = {
+ [CHTYPE_PROTOCOL] = GENMASK(2, 0),
+ [CHTYPE_DIR] = BIT(3),
+ [CH_EE] = GENMASK(7, 4),
+ [CHID] = GENMASK(12, 8),
+ /* Bit 13 reserved */
+ [ERINDEX] = GENMASK(18, 14),
+ /* Bit 19 reserved */
+ [CHSTATE] = GENMASK(23, 20),
+ [ELEMENT_SIZE] = GENMASK(31, 24),
+};
-REG_STRIDE(CH_C_CNTXT_1, ch_c_cntxt_1, 0x0001c004 + 0x4000 * GSI_EE_AP, 0x80);
+REG_STRIDE_FIELDS(CH_C_CNTXT_0, ch_c_cntxt_0,
+ 0x0001c000 + 0x4000 * GSI_EE_AP, 0x80);
+
+static const u32 reg_ch_c_cntxt_1_fmask[] = {
+ [CH_R_LENGTH] = GENMASK(15, 0),
+ /* Bits 16-31 reserved */
+};
+
+REG_STRIDE_FIELDS(CH_C_CNTXT_1, ch_c_cntxt_1,
+ 0x0001c004 + 0x4000 * GSI_EE_AP, 0x80);
REG_STRIDE(CH_C_CNTXT_2, ch_c_cntxt_2, 0x0001c008 + 0x4000 * GSI_EE_AP, 0x80);
diff --git a/drivers/net/ipa/reg/gsi_reg-v4.0.c b/drivers/net/ipa/reg/gsi_reg-v4.0.c
index 060876e4aab41..3374d4e9272d8 100644
--- a/drivers/net/ipa/reg/gsi_reg-v4.0.c
+++ b/drivers/net/ipa/reg/gsi_reg-v4.0.c
@@ -18,9 +18,28 @@ REG(INTER_EE_SRC_EV_CH_IRQ_MSK, inter_ee_src_ev_ch_irq_msk,
/* All other register offsets are relative to gsi->virt */
-REG_STRIDE(CH_C_CNTXT_0, ch_c_cntxt_0, 0x0001c000 + 0x4000 * GSI_EE_AP, 0x80);
+static const u32 reg_ch_c_cntxt_0_fmask[] = {
+ [CHTYPE_PROTOCOL] = GENMASK(2, 0),
+ [CHTYPE_DIR] = BIT(3),
+ [CH_EE] = GENMASK(7, 4),
+ [CHID] = GENMASK(12, 8),
+ /* Bit 13 reserved */
+ [ERINDEX] = GENMASK(18, 14),
+ /* Bit 19 reserved */
+ [CHSTATE] = GENMASK(23, 20),
+ [ELEMENT_SIZE] = GENMASK(31, 24),
+};
-REG_STRIDE(CH_C_CNTXT_1, ch_c_cntxt_1, 0x0001c004 + 0x4000 * GSI_EE_AP, 0x80);
+REG_STRIDE_FIELDS(CH_C_CNTXT_0, ch_c_cntxt_0,
+ 0x0001c000 + 0x4000 * GSI_EE_AP, 0x80);
+
+static const u32 reg_ch_c_cntxt_1_fmask[] = {
+ [CH_R_LENGTH] = GENMASK(15, 0),
+ /* Bits 16-31 reserved */
+};
+
+REG_STRIDE_FIELDS(CH_C_CNTXT_1, ch_c_cntxt_1,
+ 0x0001c004 + 0x4000 * GSI_EE_AP, 0x80);
REG_STRIDE(CH_C_CNTXT_2, ch_c_cntxt_2, 0x0001c008 + 0x4000 * GSI_EE_AP, 0x80);
diff --git a/drivers/net/ipa/reg/gsi_reg-v4.5.c b/drivers/net/ipa/reg/gsi_reg-v4.5.c
index 98121fd40fd8c..0502f3e635dab 100644
--- a/drivers/net/ipa/reg/gsi_reg-v4.5.c
+++ b/drivers/net/ipa/reg/gsi_reg-v4.5.c
@@ -18,9 +18,28 @@ REG(INTER_EE_SRC_EV_CH_IRQ_MSK, inter_ee_src_ev_ch_irq_msk,
/* All other register offsets are relative to gsi->virt */
-REG_STRIDE(CH_C_CNTXT_0, ch_c_cntxt_0, 0x0001c000 + 0x4000 * GSI_EE_AP, 0x80);
+static const u32 reg_ch_c_cntxt_0_fmask[] = {
+ [CHTYPE_PROTOCOL] = GENMASK(2, 0),
+ [CHTYPE_DIR] = BIT(3),
+ [CH_EE] = GENMASK(7, 4),
+ [CHID] = GENMASK(12, 8),
+ [CHTYPE_PROTOCOL_MSB] = BIT(13),
+ [ERINDEX] = GENMASK(18, 14),
+ /* Bit 19 reserved */
+ [CHSTATE] = GENMASK(23, 20),
+ [ELEMENT_SIZE] = GENMASK(31, 24),
+};
-REG_STRIDE(CH_C_CNTXT_1, ch_c_cntxt_1, 0x0001c004 + 0x4000 * GSI_EE_AP, 0x80);
+REG_STRIDE_FIELDS(CH_C_CNTXT_0, ch_c_cntxt_0,
+ 0x0001c000 + 0x4000 * GSI_EE_AP, 0x80);
+
+static const u32 reg_ch_c_cntxt_1_fmask[] = {
+ [CH_R_LENGTH] = GENMASK(15, 0),
+ /* Bits 16-31 reserved */
+};
+
+REG_STRIDE_FIELDS(CH_C_CNTXT_1, ch_c_cntxt_1,
+ 0x0001c004 + 0x4000 * GSI_EE_AP, 0x80);
REG_STRIDE(CH_C_CNTXT_2, ch_c_cntxt_2, 0x0001c008 + 0x4000 * GSI_EE_AP, 0x80);
diff --git a/drivers/net/ipa/reg/gsi_reg-v4.9.c b/drivers/net/ipa/reg/gsi_reg-v4.9.c
index 72ff78863eaaf..2c61633fdb427 100644
--- a/drivers/net/ipa/reg/gsi_reg-v4.9.c
+++ b/drivers/net/ipa/reg/gsi_reg-v4.9.c
@@ -18,9 +18,28 @@ REG(INTER_EE_SRC_EV_CH_IRQ_MSK, inter_ee_src_ev_ch_irq_msk,
/* All other register offsets are relative to gsi->virt */
-REG_STRIDE(CH_C_CNTXT_0, ch_c_cntxt_0, 0x0001c000 + 0x4000 * GSI_EE_AP, 0x80);
+static const u32 reg_ch_c_cntxt_0_fmask[] = {
+ [CHTYPE_PROTOCOL] = GENMASK(2, 0),
+ [CHTYPE_DIR] = BIT(3),
+ [CH_EE] = GENMASK(7, 4),
+ [CHID] = GENMASK(12, 8),
+ [CHTYPE_PROTOCOL_MSB] = BIT(13),
+ [ERINDEX] = GENMASK(18, 14),
+ /* Bit 19 reserved */
+ [CHSTATE] = GENMASK(23, 20),
+ [ELEMENT_SIZE] = GENMASK(31, 24),
+};
-REG_STRIDE(CH_C_CNTXT_1, ch_c_cntxt_1, 0x0001c004 + 0x4000 * GSI_EE_AP, 0x80);
+REG_STRIDE_FIELDS(CH_C_CNTXT_0, ch_c_cntxt_0,
+ 0x0001c000 + 0x4000 * GSI_EE_AP, 0x80);
+
+static const u32 reg_ch_c_cntxt_1_fmask[] = {
+ [CH_R_LENGTH] = GENMASK(19, 0),
+ /* Bits 20-31 reserved */
+};
+
+REG_STRIDE_FIELDS(CH_C_CNTXT_1, ch_c_cntxt_1,
+ 0x0001c004 + 0x4000 * GSI_EE_AP, 0x80);
REG_STRIDE(CH_C_CNTXT_2, ch_c_cntxt_2, 0x0001c008 + 0x4000 * GSI_EE_AP, 0x80);
--
2.34.1