[PATCH v2 RFC net-next 04/18] net: mvpp2: add PPv23 version definition

stefanc
2021-01-24T11:48:56Z

This patch add PPv23 version definition.
PPv23 is new packet processor in CP115.
Everything that supported by PPv22, also supported by PPv23.
No functional changes in this stage.

Signed-off-by: Stefan Chulski <stefanc@marvell.com>
---
drivers/net/ethernet/marvell/mvpp2/mvpp2.h | 24 ++++++++++++--------
drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c | 17 +++++++++-----
2 files changed, 25 insertions(+), 16 deletions(-)

diff --git a/drivers/net/ethernet/marvell/mvpp2/mvpp2.h b/drivers/net/ethernet/marvell/mvpp2/mvpp2.h
index aec9179..89b3ede 100644
--- a/drivers/net/ethernet/marvell/mvpp2/mvpp2.h
+++ b/drivers/net/ethernet/marvell/mvpp2/mvpp2.h
@@ -60,6 +60,9 @@
/* Top Registers */
#define MVPP2_MH_REG(port) (0x5040 + 4 * (port))
#define MVPP2_DSA_EXTENDED BIT(5)
+#define MVPP2_VER_ID_REG 0x50b0
+#define MVPP2_VER_PP22 0x10
+#define MVPP2_VER_PP23 0x11

/* Parser Registers */
#define MVPP2_PRS_INIT_LOOKUP_REG 0x1000
@@ -469,7 +472,7 @@
#define MVPP22_GMAC_INT_SUM_MASK_LINK_STAT BIT(1)
#define MVPP22_GMAC_INT_SUM_MASK_PTP BIT(2)

-/* Per-port XGMAC registers. PPv2.2 only, only for GOP port 0,
+/* Per-port XGMAC registers. PPv2.2 and PPv2.3, only for GOP port 0,
* relative to port->base.
*/
#define MVPP22_XLG_CTRL0_REG 0x100
@@ -506,7 +509,7 @@
#define MVPP22_XLG_CTRL4_MACMODSELECT_GMAC BIT(12)
#define MVPP22_XLG_CTRL4_EN_IDLE_CHECK BIT(14)

-/* SMI registers. PPv2.2 only, relative to priv->iface_base. */
+/* SMI registers. PPv2.2 and PPv2.3, relative to priv->iface_base. */
#define MVPP22_SMI_MISC_CFG_REG 0x1204
#define MVPP22_SMI_POLLING_EN BIT(10)

@@ -582,7 +585,7 @@
#define MVPP2_QUEUE_NEXT_DESC(q, index) \
(((index) < (q)->last_desc) ? ((index) + 1) : 0)

-/* XPCS registers. PPv2.2 only */
+/* XPCS registers.PPv2.2 and PPv2.3 */
#define MVPP22_MPCS_BASE(port) (0x7000 + (port) * 0x1000)
#define MVPP22_MPCS_CTRL 0x14
#define MVPP22_MPCS_CTRL_FWD_ERR_CONN BIT(10)
@@ -593,7 +596,7 @@
#define MVPP22_MPCS_CLK_RESET_DIV_RATIO(n) ((n) << 4)
#define MVPP22_MPCS_CLK_RESET_DIV_SET BIT(11)

-/* XPCS registers. PPv2.2 only */
+/* XPCS registers. PPv2.2 and PPv2.3 */
#define MVPP22_XPCS_BASE(port) (0x7400 + (port) * 0x1000)
#define MVPP22_XPCS_CFG0 0x0
#define MVPP22_XPCS_CFG0_RESET_DIS BIT(0)
@@ -930,15 +933,16 @@ struct mvpp2 {
void __iomem *iface_base;
void __iomem *cm3_base;

- /* On PPv2.2, each "software thread" can access the base
+ /* On PPv2.2 and PPv2.3, each "software thread" can access the base
* register through a separate address space, each 64 KB apart
* from each other. Typically, such address spaces will be
* used per CPU.
*/
void __iomem *swth_base[MVPP2_MAX_THREADS];

- /* On PPv2.2, some port control registers are located into the system
- * controller space. These registers are accessible through a regmap.
+ /* On PPv2.2 and PPv2.3, some port control registers are located into
+ * the system controller space. These registers are accessible
+ * through a regmap.
*/
struct regmap *sysctrl_base;

@@ -980,7 +984,7 @@ struct mvpp2 {
u32 tclk;

/* HW version */
- enum { MVPP21, MVPP22 } hw_version;
+ enum { MVPP21, MVPP22, MVPP23 } hw_version;

/* Maximum number of RXQs per port */
unsigned int max_port_rxqs;
@@ -1227,7 +1231,7 @@ struct mvpp21_rx_desc {
__le32 reserved8;
};

-/* HW TX descriptor for PPv2.2 */
+/* HW TX descriptor for PPv2.2 and PPv2.3 */
struct mvpp22_tx_desc {
__le32 command;
u8 packet_offset;
@@ -1239,7 +1243,7 @@ struct mvpp22_tx_desc {
__le64 buf_cookie_misc;
};

-/* HW RX descriptor for PPv2.2 */
+/* HW RX descriptor for PPv2.2 and PPv2.3 */
struct mvpp22_rx_desc {
__le32 status;
__le16 reserved1;
diff --git a/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c b/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
index c969a2d..fc102f2 100644
--- a/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
+++ b/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
@@ -397,7 +397,7 @@ static int mvpp2_bm_pool_create(struct device *dev, struct mvpp2 *priv,
if (!IS_ALIGNED(size, 16))
return -EINVAL;

- /* PPv2.1 needs 8 bytes per buffer pointer, PPv2.2 needs 16
+ /* PPv2.1 needs 8 bytes per buffer pointer, PPv2.2 and PPv2.3 needs 16
* bytes per buffer pointer
*/
if (priv->hw_version == MVPP21)
@@ -1185,7 +1185,7 @@ static void mvpp2_interrupts_unmask(void *arg)
u32 val;
int i;

- if (port->priv->hw_version != MVPP22)
+ if (port->priv->hw_version == MVPP21)
return;

if (mask)
@@ -5469,7 +5469,7 @@ static void mvpp2_rx_irqs_setup(struct mvpp2_port *port)
return;
}

- /* Handle the more complicated PPv2.2 case */
+ /* Handle the more complicated PPv2.2 and PPv2.3 case */
for (i = 0; i < port->nqvecs; i++) {
struct mvpp2_queue_vector *qv = port->qvecs + i;

@@ -5646,7 +5646,7 @@ static bool mvpp22_port_has_legacy_tx_irqs(struct device_node *port_node,

/* Checks if the port dt description has the required Tx interrupts:
* - PPv2.1: there are no such interrupts.
- * - PPv2.2:
+ * - PPv2.2 and PPv2.3:
* - The old DTs have: "rx-shared", "tx-cpuX" with X in [0...3]
* - The new ones have: "hifX" with X in [0..8]
*
@@ -6634,7 +6634,7 @@ static void mvpp22_rx_fifo_set_hw(struct mvpp2 *priv, int port, int data_size)
mvpp2_write(priv, MVPP2_RX_ATTR_FIFO_SIZE_REG(port), attr_size);
}

-/* Initialize TX FIFO's: the total FIFO size is 48kB on PPv2.2.
+/* Initialize TX FIFO's: the total FIFO size is 48kB on PPv2.2 and PPv2.3.
* 4kB fixed space must be assigned for the loopback port.
* Redistribute remaining avialable 44kB space among all active ports.
* Guarantee minimum 32kB for 10G port and 8kB for port 1, capable of 2.5G
@@ -6691,7 +6691,7 @@ static void mvpp22_tx_fifo_set_hw(struct mvpp2 *priv, int port, int size)
mvpp2_write(priv, MVPP22_TX_FIFO_THRESH_REG(port), threshold);
}

-/* Initialize TX FIFO's: the total FIFO size is 19kB on PPv2.2.
+/* Initialize TX FIFO's: the total FIFO size is 19kB on PPv2.2 and PPv2.3.
* 3kB fixed space must be assigned for the loopback port.
* Redistribute remaining avialable 16kB space among all active ports.
* The 10G interface should use 10kB (which is maximum possible size
@@ -7080,6 +7080,11 @@ static int mvpp2_probe(struct platform_device *pdev)
priv->port_map |= BIT(i);
}

+ if (priv->hw_version != MVPP21) {
+ if (mvpp2_read(priv, MVPP2_VER_ID_REG) == MVPP2_VER_PP23)
+ priv->hw_version = MVPP23;
+ }
+
/* Initialize network controller */
err = mvpp2_init(pdev, priv);
if (err < 0) {
--
1.9.1