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Message-ID: <CAPv3WKczH5YgDiCuwmdLp7njF7YTfXmQmUNo3U8v=Rto2RUrbA@mail.gmail.com>
Date: Mon, 8 Feb 2021 09:46:59 +0100
From: Marcin Wojtas <mw@...ihalf.com>
To: Stefan Chulski <stefanc@...vell.com>
Cc: netdev <netdev@...r.kernel.org>,
Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
"David S. Miller" <davem@...emloft.net>, nadavh@...vell.com,
Yan Markman <ymarkman@...vell.com>,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
Jakub Kicinski <kuba@...nel.org>,
Russell King - ARM Linux <linux@...linux.org.uk>,
Andrew Lunn <andrew@...n.ch>,
Russell King <rmk+kernel@...linux.org.uk>, atenart@...nel.org,
devicetree@...r.kernel.org, Rob Herring <robh+dt@...nel.org>,
Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>,
Grégory Clement <gregory.clement@...tlin.com>,
linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v10 net-next 05/15] net: mvpp2: add PPv23 version definition
Hi,
pon., 8 lut 2021 o 09:33 <stefanc@...vell.com> napisał(a):
>
> From: Stefan Chulski <stefanc@...vell.com>
>
> 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@...vell.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 56e90ab..ce08086 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)
> @@ -927,15 +930,16 @@ 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;
>
> @@ -977,7 +981,7 @@ 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;
> @@ -1221,7 +1225,7 @@ 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;
> @@ -1233,7 +1237,7 @@ 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 e9c5916..5730900 100644
> --- a/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
> +++ b/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
> @@ -384,7 +384,7 @@ 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)
> @@ -1172,7 +1172,7 @@ static void mvpp2_interrupts_unmask(void *arg)
> u32 val;
> int i;
>
> - if (port->priv->hw_version != MVPP22)
> + if (port->priv->hw_version == MVPP21)
> return;
As requested previously, please move above check to 'net: mvpp2:
always compare hw-version vs MVPP21' patch.
Thanks,
Marcin
>
> if (mask)
> @@ -5456,7 +5456,7 @@ 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;
>
> @@ -5633,7 +5633,7 @@ 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]
> *
> @@ -6621,7 +6621,7 @@ 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
> @@ -6678,7 +6678,7 @@ 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
> @@ -7049,6 +7049,11 @@ 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
>
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