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author | INAGAKI Hiroshi <musashino.open@gmail.com> | 2021-05-05 09:32:27 +0900 |
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committer | Adrian Schmutzler <freifunk@adrianschmutzler.de> | 2021-09-26 00:32:17 +0200 |
commit | 95170b4350ec6dcadd4dc740c130709c46aa6ecb (patch) | |
tree | 3280bba44b875daf116b57a3d27f8f13bab8c47c /target/linux/realtek/files-5.10/drivers/net/ethernet/rtl838x_eth.c | |
parent | 1edc7078d6549a7ff39d62318d2879ee72bd0b9d (diff) | |
download | upstream-95170b4350ec6dcadd4dc740c130709c46aa6ecb.tar.gz upstream-95170b4350ec6dcadd4dc740c130709c46aa6ecb.tar.bz2 upstream-95170b4350ec6dcadd4dc740c130709c46aa6ecb.zip |
realtek: copy config/files/patches to 5.10
this patch copies the following files from 5.4 to 5.10:
- config-5.4 -> config-5.10
- files-5.4/ -> files-5.10/
- patches-5.4/ -> patches-5.10/
Signed-off-by: INAGAKI Hiroshi <musashino.open@gmail.com>
[rebase on change in files-5.4]
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
Diffstat (limited to 'target/linux/realtek/files-5.10/drivers/net/ethernet/rtl838x_eth.c')
-rw-r--r-- | target/linux/realtek/files-5.10/drivers/net/ethernet/rtl838x_eth.c | 2201 |
1 files changed, 2201 insertions, 0 deletions
diff --git a/target/linux/realtek/files-5.10/drivers/net/ethernet/rtl838x_eth.c b/target/linux/realtek/files-5.10/drivers/net/ethernet/rtl838x_eth.c new file mode 100644 index 0000000000..3f98e3bf81 --- /dev/null +++ b/target/linux/realtek/files-5.10/drivers/net/ethernet/rtl838x_eth.c @@ -0,0 +1,2201 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * linux/drivers/net/ethernet/rtl838x_eth.c + * Copyright (C) 2020 B. Koblitz + */ + +#include <linux/dma-mapping.h> +#include <linux/etherdevice.h> +#include <linux/interrupt.h> +#include <linux/io.h> +#include <linux/platform_device.h> +#include <linux/sched.h> +#include <linux/slab.h> +#include <linux/of.h> +#include <linux/of_net.h> +#include <linux/of_mdio.h> +#include <linux/module.h> +#include <linux/phylink.h> +#include <linux/pkt_sched.h> +#include <net/dsa.h> +#include <net/switchdev.h> +#include <asm/cacheflush.h> + +#include <asm/mach-rtl838x/mach-rtl83xx.h> +#include "rtl838x_eth.h" + +extern struct rtl83xx_soc_info soc_info; + +/* + * Maximum number of RX rings is 8 on RTL83XX and 32 on the 93XX + * The ring is assigned by switch based on packet/port priortity + * Maximum number of TX rings is 2, Ring 2 being the high priority + * ring on the RTL93xx SoCs. MAX_RING_SIZE * RING_BUFFER gives + * the memory used for the ring buffer. + */ +#define MAX_RXRINGS 32 +#define MAX_RXLEN 100 +#define MAX_ENTRIES (200 * 8) +#define TXRINGS 2 +// BUG: TXRINGLEN can be 160 +#define TXRINGLEN 16 +#define NOTIFY_EVENTS 10 +#define NOTIFY_BLOCKS 10 +#define TX_EN 0x8 +#define RX_EN 0x4 +#define TX_EN_93XX 0x20 +#define RX_EN_93XX 0x10 +#define TX_DO 0x2 +#define WRAP 0x2 + +#define RING_BUFFER 1600 + +#define RTL838X_STORM_CTRL_PORT_BC_EXCEED (0x470C) +#define RTL838X_STORM_CTRL_PORT_MC_EXCEED (0x4710) +#define RTL838X_STORM_CTRL_PORT_UC_EXCEED (0x4714) +#define RTL838X_ATK_PRVNT_STS (0x5B1C) + +struct p_hdr { + uint8_t *buf; + uint16_t reserved; + uint16_t size; /* buffer size */ + uint16_t offset; + uint16_t len; /* pkt len */ + uint16_t cpu_tag[10]; +} __packed __aligned(1); + +struct n_event { + uint32_t type:2; + uint32_t fidVid:12; + uint64_t mac:48; + uint32_t slp:6; + uint32_t valid:1; + uint32_t reserved:27; +} __packed __aligned(1); + +struct ring_b { + uint32_t rx_r[MAX_RXRINGS][MAX_RXLEN]; + uint32_t tx_r[TXRINGS][TXRINGLEN]; + struct p_hdr rx_header[MAX_RXRINGS][MAX_RXLEN]; + struct p_hdr tx_header[TXRINGS][TXRINGLEN]; + uint32_t c_rx[MAX_RXRINGS]; + uint32_t c_tx[TXRINGS]; + uint8_t tx_space[TXRINGS * TXRINGLEN * RING_BUFFER]; + uint8_t *rx_space; +}; + +struct notify_block { + struct n_event events[NOTIFY_EVENTS]; +}; + +struct notify_b { + struct notify_block blocks[NOTIFY_BLOCKS]; + u32 reserved1[8]; + u32 ring[NOTIFY_BLOCKS]; + u32 reserved2[8]; +}; + +void rtl838x_create_tx_header(struct p_hdr *h, int dest_port, int prio) +{ + prio &= 0x7; + + if (dest_port > 0) { + // cpu_tag[0] is reserved on the RTL83XX SoCs + h->cpu_tag[1] = 0x0400; + h->cpu_tag[2] = 0x0200; + h->cpu_tag[3] = 0x0000; + h->cpu_tag[4] = BIT(dest_port) >> 16; + h->cpu_tag[5] = BIT(dest_port) & 0xffff; + // Set internal priority and AS_PRIO + if (prio >= 0) + h->cpu_tag[2] |= (prio | 0x8) << 12; + } +} + +void rtl839x_create_tx_header(struct p_hdr *h, int dest_port, int prio) +{ + prio &= 0x7; + + if (dest_port > 0) { + // cpu_tag[0] is reserved on the RTL83XX SoCs + h->cpu_tag[1] = 0x0100; + h->cpu_tag[2] = h->cpu_tag[3] = h->cpu_tag[4] = h->cpu_tag[5] = 0; + if (dest_port >= 32) { + dest_port -= 32; + h->cpu_tag[2] = BIT(dest_port) >> 16; + h->cpu_tag[3] = BIT(dest_port) & 0xffff; + } else { + h->cpu_tag[4] = BIT(dest_port) >> 16; + h->cpu_tag[5] = BIT(dest_port) & 0xffff; + } + h->cpu_tag[6] |= BIT(21); // Enable destination port mask use + // Set internal priority and AS_PRIO + if (prio >= 0) + h->cpu_tag[1] |= prio | BIT(3); + } +} + +void rtl930x_create_tx_header(struct p_hdr *h, int dest_port, int prio) +{ + h->cpu_tag[0] = 0x8000; + h->cpu_tag[1] = 0; // TODO: Fill port and prio + h->cpu_tag[2] = 0; + h->cpu_tag[3] = 0; + h->cpu_tag[4] = 0; + h->cpu_tag[5] = 0; + h->cpu_tag[6] = 0; + h->cpu_tag[7] = 0xffff; +} + +void rtl931x_create_tx_header(struct p_hdr *h, int dest_port, int prio) +{ + h->cpu_tag[0] = 0x8000; + h->cpu_tag[1] = 0; // TODO: Fill port and prio + h->cpu_tag[2] = 0; + h->cpu_tag[3] = 0; + h->cpu_tag[4] = 0; + h->cpu_tag[5] = 0; + h->cpu_tag[6] = 0; + h->cpu_tag[7] = 0xffff; +} + +struct rtl838x_rx_q { + int id; + struct rtl838x_eth_priv *priv; + struct napi_struct napi; +}; + +struct rtl838x_eth_priv { + struct net_device *netdev; + struct platform_device *pdev; + void *membase; + spinlock_t lock; + struct mii_bus *mii_bus; + struct rtl838x_rx_q rx_qs[MAX_RXRINGS]; + struct phylink *phylink; + struct phylink_config phylink_config; + u16 id; + u16 family_id; + const struct rtl838x_reg *r; + u8 cpu_port; + u32 lastEvent; + u16 rxrings; + u16 rxringlen; +}; + +extern int rtl838x_phy_init(struct rtl838x_eth_priv *priv); +extern int rtl838x_read_sds_phy(int phy_addr, int phy_reg); +extern int rtl839x_read_sds_phy(int phy_addr, int phy_reg); +extern int rtl839x_write_sds_phy(int phy_addr, int phy_reg, u16 v); +extern int rtl930x_read_sds_phy(int phy_addr, int page, int phy_reg); +extern int rtl930x_write_sds_phy(int phy_addr, int page, int phy_reg, u16 v); +extern int rtl930x_read_mmd_phy(u32 port, u32 devnum, u32 regnum, u32 *val); +extern int rtl930x_write_mmd_phy(u32 port, u32 devnum, u32 regnum, u32 val); + +/* + * On the RTL93XX, the RTL93XX_DMA_IF_RX_RING_CNTR track the fill level of + * the rings. Writing x into these registers substracts x from its content. + * When the content reaches the ring size, the ASIC no longer adds + * packets to this receive queue. + */ +void rtl838x_update_cntr(int r, int released) +{ + // This feature is not available on RTL838x SoCs +} + +void rtl839x_update_cntr(int r, int released) +{ + // This feature is not available on RTL839x SoCs +} + +void rtl930x_update_cntr(int r, int released) +{ + int pos = (r % 3) * 10; + u32 reg = RTL930X_DMA_IF_RX_RING_CNTR + ((r / 3) << 2); + u32 v = sw_r32(reg); + + v = (v >> pos) & 0x3ff; + pr_debug("RX: Work done %d, old value: %d, pos %d, reg %04x\n", released, v, pos, reg); + sw_w32_mask(0x3ff << pos, released << pos, reg); + sw_w32(v, reg); +} + +void rtl931x_update_cntr(int r, int released) +{ + int pos = (r % 3) * 10; + u32 reg = RTL931X_DMA_IF_RX_RING_CNTR + ((r / 3) << 2); + + sw_w32_mask(0x3ff << pos, released << pos, reg); +} + +struct dsa_tag { + u8 reason; + u8 queue; + u16 port; + u8 l2_offloaded; + u8 prio; + bool crc_error; +}; + +bool rtl838x_decode_tag(struct p_hdr *h, struct dsa_tag *t) +{ + t->reason = h->cpu_tag[3] & 0xf; + t->queue = (h->cpu_tag[0] & 0xe0) >> 5; + t->port = h->cpu_tag[1] & 0x1f; + t->crc_error = t->reason == 13; + + pr_debug("Reason: %d\n", t->reason); + if (t->reason != 4) // NIC_RX_REASON_SPECIAL_TRAP + t->l2_offloaded = 1; + else + t->l2_offloaded = 0; + + return t->l2_offloaded; +} + +bool rtl839x_decode_tag(struct p_hdr *h, struct dsa_tag *t) +{ + t->reason = h->cpu_tag[4] & 0x1f; + t->queue = (h->cpu_tag[3] & 0xe000) >> 13; + t->port = h->cpu_tag[1] & 0x3f; + t->crc_error = h->cpu_tag[3] & BIT(2); + + pr_debug("Reason: %d\n", t->reason); + if ((t->reason != 7) && (t->reason != 8)) // NIC_RX_REASON_RMA_USR + t->l2_offloaded = 1; + else + t->l2_offloaded = 0; + + return t->l2_offloaded; +} + +bool rtl930x_decode_tag(struct p_hdr *h, struct dsa_tag *t) +{ + t->reason = h->cpu_tag[7] & 0x3f; + t->queue = (h->cpu_tag[2] >> 11) & 0x1f; + t->port = (h->cpu_tag[0] >> 8) & 0x1f; + t->crc_error = h->cpu_tag[1] & BIT(6); + + pr_debug("Reason %d, port %d, queue %d\n", t->reason, t->port, t->queue); + if (t->reason >= 19 && t->reason <= 27) + t->l2_offloaded = 0; + else + t->l2_offloaded = 1; + + return t->l2_offloaded; +} + +bool rtl931x_decode_tag(struct p_hdr *h, struct dsa_tag *t) +{ + t->reason = h->cpu_tag[7] & 0x3f; + t->queue = (h->cpu_tag[2] >> 11) & 0x1f; + t->port = (h->cpu_tag[0] >> 8) & 0x3f; + t->crc_error = h->cpu_tag[1] & BIT(6); + + pr_debug("Reason %d, port %d, queue %d\n", t->reason, t->port, t->queue); + if (t->reason >= 19 && t->reason <= 27) + t->l2_offloaded = 0; + else + t->l2_offloaded = 1; + + return t->l2_offloaded; +} + +/* + * Discard the RX ring-buffers, called as part of the net-ISR + * when the buffer runs over + * Caller needs to hold priv->lock + */ +static void rtl838x_rb_cleanup(struct rtl838x_eth_priv *priv, int status) +{ + int r; + u32 *last; + struct p_hdr *h; + struct ring_b *ring = priv->membase; + + for (r = 0; r < priv->rxrings; r++) { + pr_debug("In %s working on r: %d\n", __func__, r); + last = (u32 *)KSEG1ADDR(sw_r32(priv->r->dma_if_rx_cur + r * 4)); + do { + if ((ring->rx_r[r][ring->c_rx[r]] & 0x1)) + break; + pr_debug("Got something: %d\n", ring->c_rx[r]); + h = &ring->rx_header[r][ring->c_rx[r]]; + memset(h, 0, sizeof(struct p_hdr)); + h->buf = (u8 *)KSEG1ADDR(ring->rx_space + + r * priv->rxringlen * RING_BUFFER + + ring->c_rx[r] * RING_BUFFER); + h->size = RING_BUFFER; + /* make sure the header is visible to the ASIC */ + mb(); + + ring->rx_r[r][ring->c_rx[r]] = KSEG1ADDR(h) | 0x1 + | (ring->c_rx[r] == (priv->rxringlen - 1) ? WRAP : 0x1); + ring->c_rx[r] = (ring->c_rx[r] + 1) % priv->rxringlen; + } while (&ring->rx_r[r][ring->c_rx[r]] != last); + } +} + +struct fdb_update_work { + struct work_struct work; + struct net_device *ndev; + u64 macs[NOTIFY_EVENTS + 1]; +}; + +void rtl838x_fdb_sync(struct work_struct *work) +{ + const struct fdb_update_work *uw = + container_of(work, struct fdb_update_work, work); + struct switchdev_notifier_fdb_info info; + u8 addr[ETH_ALEN]; + int i = 0; + int action; + + while (uw->macs[i]) { + action = (uw->macs[i] & (1ULL << 63)) ? SWITCHDEV_FDB_ADD_TO_BRIDGE + : SWITCHDEV_FDB_DEL_TO_BRIDGE; + u64_to_ether_addr(uw->macs[i] & 0xffffffffffffULL, addr); + info.addr = &addr[0]; + info.vid = 0; + info.offloaded = 1; + pr_debug("FDB entry %d: %llx, action %d\n", i, uw->macs[0], action); + call_switchdev_notifiers(action, uw->ndev, &info.info, NULL); + i++; + } + kfree(work); +} + +static void rtl839x_l2_notification_handler(struct rtl838x_eth_priv *priv) +{ + struct notify_b *nb = priv->membase + sizeof(struct ring_b); + u32 e = priv->lastEvent; + struct n_event *event; + int i; + u64 mac; + struct fdb_update_work *w; + + while (!(nb->ring[e] & 1)) { + w = kzalloc(sizeof(*w), GFP_ATOMIC); + if (!w) { + pr_err("Out of memory: %s", __func__); + return; + } + INIT_WORK(&w->work, rtl838x_fdb_sync); + + for (i = 0; i < NOTIFY_EVENTS; i++) { + event = &nb->blocks[e].events[i]; + if (!event->valid) + continue; + mac = event->mac; + if (event->type) + mac |= 1ULL << 63; + w->ndev = priv->netdev; + w->macs[i] = mac; + } + + /* Hand the ring entry back to the switch */ + nb->ring[e] = nb->ring[e] | 1; + e = (e + 1) % NOTIFY_BLOCKS; + + w->macs[i] = 0ULL; + schedule_work(&w->work); + } + priv->lastEvent = e; +} + +static irqreturn_t rtl83xx_net_irq(int irq, void *dev_id) +{ + struct net_device *dev = dev_id; + struct rtl838x_eth_priv *priv = netdev_priv(dev); + u32 status = sw_r32(priv->r->dma_if_intr_sts); + bool triggered = false; + u32 atk = sw_r32(RTL838X_ATK_PRVNT_STS); + int i; + u32 storm_uc = sw_r32(RTL838X_STORM_CTRL_PORT_UC_EXCEED); + u32 storm_mc = sw_r32(RTL838X_STORM_CTRL_PORT_MC_EXCEED); + u32 storm_bc = sw_r32(RTL838X_STORM_CTRL_PORT_BC_EXCEED); + + pr_debug("IRQ: %08x\n", status); + if (storm_uc || storm_mc || storm_bc) { + pr_warn("Storm control UC: %08x, MC: %08x, BC: %08x\n", + storm_uc, storm_mc, storm_bc); + + sw_w32(storm_uc, RTL838X_STORM_CTRL_PORT_UC_EXCEED); + sw_w32(storm_mc, RTL838X_STORM_CTRL_PORT_MC_EXCEED); + sw_w32(storm_bc, RTL838X_STORM_CTRL_PORT_BC_EXCEED); + + triggered = true; + } + + if (atk) { + pr_debug("Attack prevention triggered: %08x\n", atk); + sw_w32(atk, RTL838X_ATK_PRVNT_STS); + } + + spin_lock(&priv->lock); + /* Ignore TX interrupt */ + if ((status & 0xf0000)) { + /* Clear ISR */ + sw_w32(0x000f0000, priv->r->dma_if_intr_sts); + } + + /* RX interrupt */ + if (status & 0x0ff00) { + /* ACK and disable RX interrupt for this ring */ + sw_w32_mask(0xff00 & status, 0, priv->r->dma_if_intr_msk); + sw_w32(0x0000ff00 & status, priv->r->dma_if_intr_sts); + for (i = 0; i < priv->rxrings; i++) { + if (status & BIT(i + 8)) { + pr_debug("Scheduling queue: %d\n", i); + napi_schedule(&priv->rx_qs[i].napi); + } + } + } + + /* RX buffer overrun */ + if (status & 0x000ff) { + pr_info("RX buffer overrun: status %x, mask: %x\n", + status, sw_r32(priv->r->dma_if_intr_msk)); + sw_w32(status, priv->r->dma_if_intr_sts); + rtl838x_rb_cleanup(priv, status & 0xff); + } + + if (priv->family_id == RTL8390_FAMILY_ID && status & 0x00100000) { + sw_w32(0x00100000, priv->r->dma_if_intr_sts); + rtl839x_l2_notification_handler(priv); + } + + if (priv->family_id == RTL8390_FAMILY_ID && status & 0x00200000) { + sw_w32(0x00200000, priv->r->dma_if_intr_sts); + rtl839x_l2_notification_handler(priv); + } + + if (priv->family_id == RTL8390_FAMILY_ID && status & 0x00400000) { + sw_w32(0x00400000, priv->r->dma_if_intr_sts); + rtl839x_l2_notification_handler(priv); + } + + spin_unlock(&priv->lock); + return IRQ_HANDLED; +} + +static irqreturn_t rtl93xx_net_irq(int irq, void *dev_id) +{ + struct net_device *dev = dev_id; + struct rtl838x_eth_priv *priv = netdev_priv(dev); + u32 status_rx_r = sw_r32(priv->r->dma_if_intr_rx_runout_sts); + u32 status_rx = sw_r32(priv->r->dma_if_intr_rx_done_sts); + u32 status_tx = sw_r32(priv->r->dma_if_intr_tx_done_sts); + int i; + + pr_debug("In %s, status_tx: %08x, status_rx: %08x, status_rx_r: %08x\n", + __func__, status_tx, status_rx, status_rx_r); + spin_lock(&priv->lock); + + /* Ignore TX interrupt */ + if (status_tx) { + /* Clear ISR */ + pr_debug("TX done\n"); + sw_w32(status_tx, priv->r->dma_if_intr_tx_done_sts); + } + + /* RX interrupt */ + if (status_rx) { + pr_debug("RX IRQ\n"); + /* ACK and disable RX interrupt for given rings */ + sw_w32(status_rx, priv->r->dma_if_intr_rx_done_sts); + sw_w32_mask(status_rx, 0, priv->r->dma_if_intr_rx_done_msk); + for (i = 0; i < priv->rxrings; i++) { + if (status_rx & BIT(i)) { + pr_debug("Scheduling queue: %d\n", i); + napi_schedule(&priv->rx_qs[i].napi); + } + } + } + + /* RX buffer overrun */ + if (status_rx_r) { + pr_debug("RX buffer overrun: status %x, mask: %x\n", + status_rx_r, sw_r32(priv->r->dma_if_intr_rx_runout_msk)); + sw_w32(status_rx_r, priv->r->dma_if_intr_rx_runout_sts); + rtl838x_rb_cleanup(priv, status_rx_r); + } + + spin_unlock(&priv->lock); + return IRQ_HANDLED; +} + +static const struct rtl838x_reg rtl838x_reg = { + .net_irq = rtl83xx_net_irq, + .mac_port_ctrl = rtl838x_mac_port_ctrl, + .dma_if_intr_sts = RTL838X_DMA_IF_INTR_STS, + .dma_if_intr_msk = RTL838X_DMA_IF_INTR_MSK, + .dma_if_ctrl = RTL838X_DMA_IF_CTRL, + .mac_force_mode_ctrl = RTL838X_MAC_FORCE_MODE_CTRL, + .dma_rx_base = RTL838X_DMA_RX_BASE, + .dma_tx_base = RTL838X_DMA_TX_BASE, + .dma_if_rx_ring_size = rtl838x_dma_if_rx_ring_size, + .dma_if_rx_ring_cntr = rtl838x_dma_if_rx_ring_cntr, + .dma_if_rx_cur = RTL838X_DMA_IF_RX_CUR, + .rst_glb_ctrl = RTL838X_RST_GLB_CTRL_0, + .get_mac_link_sts = rtl838x_get_mac_link_sts, + .get_mac_link_dup_sts = rtl838x_get_mac_link_dup_sts, + .get_mac_link_spd_sts = rtl838x_get_mac_link_spd_sts, + .get_mac_rx_pause_sts = rtl838x_get_mac_rx_pause_sts, + .get_mac_tx_pause_sts = rtl838x_get_mac_tx_pause_sts, + .mac = RTL838X_MAC, + .l2_tbl_flush_ctrl = RTL838X_L2_TBL_FLUSH_CTRL, + .update_cntr = rtl838x_update_cntr, + .create_tx_header = rtl838x_create_tx_header, + .decode_tag = rtl838x_decode_tag, +}; + +static const struct rtl838x_reg rtl839x_reg = { + .net_irq = rtl83xx_net_irq, + .mac_port_ctrl = rtl839x_mac_port_ctrl, + .dma_if_intr_sts = RTL839X_DMA_IF_INTR_STS, + .dma_if_intr_msk = RTL839X_DMA_IF_INTR_MSK, + .dma_if_ctrl = RTL839X_DMA_IF_CTRL, + .mac_force_mode_ctrl = RTL839X_MAC_FORCE_MODE_CTRL, + .dma_rx_base = RTL839X_DMA_RX_BASE, + .dma_tx_base = RTL839X_DMA_TX_BASE, + .dma_if_rx_ring_size = rtl839x_dma_if_rx_ring_size, + .dma_if_rx_ring_cntr = rtl839x_dma_if_rx_ring_cntr, + .dma_if_rx_cur = RTL839X_DMA_IF_RX_CUR, + .rst_glb_ctrl = RTL839X_RST_GLB_CTRL, + .get_mac_link_sts = rtl839x_get_mac_link_sts, + .get_mac_link_dup_sts = rtl839x_get_mac_link_dup_sts, + .get_mac_link_spd_sts = rtl839x_get_mac_link_spd_sts, + .get_mac_rx_pause_sts = rtl839x_get_mac_rx_pause_sts, + .get_mac_tx_pause_sts = rtl839x_get_mac_tx_pause_sts, + .mac = RTL839X_MAC, + .l2_tbl_flush_ctrl = RTL839X_L2_TBL_FLUSH_CTRL, + .update_cntr = rtl839x_update_cntr, + .create_tx_header = rtl839x_create_tx_header, + .decode_tag = rtl839x_decode_tag, +}; + +static const struct rtl838x_reg rtl930x_reg = { + .net_irq = rtl93xx_net_irq, + .mac_port_ctrl = rtl930x_mac_port_ctrl, + .dma_if_intr_rx_runout_sts = RTL930X_DMA_IF_INTR_RX_RUNOUT_STS, + .dma_if_intr_rx_done_sts = RTL930X_DMA_IF_INTR_RX_DONE_STS, + .dma_if_intr_tx_done_sts = RTL930X_DMA_IF_INTR_TX_DONE_STS, + .dma_if_intr_rx_runout_msk = RTL930X_DMA_IF_INTR_RX_RUNOUT_MSK, + .dma_if_intr_rx_done_msk = RTL930X_DMA_IF_INTR_RX_DONE_MSK, + .dma_if_intr_tx_done_msk = RTL930X_DMA_IF_INTR_TX_DONE_MSK, + .l2_ntfy_if_intr_sts = RTL930X_L2_NTFY_IF_INTR_STS, + .l2_ntfy_if_intr_msk = RTL930X_L2_NTFY_IF_INTR_MSK, + .dma_if_ctrl = RTL930X_DMA_IF_CTRL, + .mac_force_mode_ctrl = RTL930X_MAC_FORCE_MODE_CTRL, + .dma_rx_base = RTL930X_DMA_RX_BASE, + .dma_tx_base = RTL930X_DMA_TX_BASE, + .dma_if_rx_ring_size = rtl930x_dma_if_rx_ring_size, + .dma_if_rx_ring_cntr = rtl930x_dma_if_rx_ring_cntr, + .dma_if_rx_cur = RTL930X_DMA_IF_RX_CUR, + .rst_glb_ctrl = RTL930X_RST_GLB_CTRL_0, + .get_mac_link_sts = rtl930x_get_mac_link_sts, + .get_mac_link_dup_sts = rtl930x_get_mac_link_dup_sts, + .get_mac_link_spd_sts = rtl930x_get_mac_link_spd_sts, + .get_mac_rx_pause_sts = rtl930x_get_mac_rx_pause_sts, + .get_mac_tx_pause_sts = rtl930x_get_mac_tx_pause_sts, + .mac = RTL930X_MAC_L2_ADDR_CTRL, + .l2_tbl_flush_ctrl = RTL930X_L2_TBL_FLUSH_CTRL, + .update_cntr = rtl930x_update_cntr, + .create_tx_header = rtl930x_create_tx_header, + .decode_tag = rtl930x_decode_tag, +}; + +static const struct rtl838x_reg rtl931x_reg = { + .net_irq = rtl93xx_net_irq, + .mac_port_ctrl = rtl931x_mac_port_ctrl, + .dma_if_intr_rx_runout_sts = RTL931X_DMA_IF_INTR_RX_RUNOUT_STS, + .dma_if_intr_rx_done_sts = RTL931X_DMA_IF_INTR_RX_DONE_STS, + .dma_if_intr_tx_done_sts = RTL931X_DMA_IF_INTR_TX_DONE_STS, + .dma_if_intr_rx_runout_msk = RTL931X_DMA_IF_INTR_RX_RUNOUT_MSK, + .dma_if_intr_rx_done_msk = RTL931X_DMA_IF_INTR_RX_DONE_MSK, + .dma_if_intr_tx_done_msk = RTL931X_DMA_IF_INTR_TX_DONE_MSK, + .l2_ntfy_if_intr_sts = RTL931X_L2_NTFY_IF_INTR_STS, + .l2_ntfy_if_intr_msk = RTL931X_L2_NTFY_IF_INTR_MSK, + .dma_if_ctrl = RTL931X_DMA_IF_CTRL, + .mac_force_mode_ctrl = RTL931X_MAC_FORCE_MODE_CTRL, + .dma_rx_base = RTL931X_DMA_RX_BASE, + .dma_tx_base = RTL931X_DMA_TX_BASE, + .dma_if_rx_ring_size = rtl931x_dma_if_rx_ring_size, + .dma_if_rx_ring_cntr = rtl931x_dma_if_rx_ring_cntr, + .dma_if_rx_cur = RTL931X_DMA_IF_RX_CUR, + .rst_glb_ctrl = RTL931X_RST_GLB_CTRL, + .get_mac_link_sts = rtl931x_get_mac_link_sts, + .get_mac_link_dup_sts = rtl931x_get_mac_link_dup_sts, + .get_mac_link_spd_sts = rtl931x_get_mac_link_spd_sts, + .get_mac_rx_pause_sts = rtl931x_get_mac_rx_pause_sts, + .get_mac_tx_pause_sts = rtl931x_get_mac_tx_pause_sts, + .mac = RTL931X_MAC_L2_ADDR_CTRL, + .l2_tbl_flush_ctrl = RTL931X_L2_TBL_FLUSH_CTRL, + .update_cntr = rtl931x_update_cntr, + .create_tx_header = rtl931x_create_tx_header, + .decode_tag = rtl931x_decode_tag, +}; + +static void rtl838x_hw_reset(struct rtl838x_eth_priv *priv) +{ + u32 int_saved, nbuf; + int i, pos; + + pr_info("RESETTING %x, CPU_PORT %d\n", priv->family_id, priv->cpu_port); + sw_w32_mask(0x3, 0, priv->r->mac_port_ctrl(priv->cpu_port)); + mdelay(100); + + /* Disable and clear interrupts */ + if (priv->family_id == RTL9300_FAMILY_ID || priv->family_id == RTL9310_FAMILY_ID) { + sw_w32(0x00000000, priv->r->dma_if_intr_rx_runout_msk); + sw_w32(0xffffffff, priv->r->dma_if_intr_rx_runout_sts); + sw_w32(0x00000000, priv->r->dma_if_intr_rx_done_msk); + sw_w32(0xffffffff, priv->r->dma_if_intr_rx_done_sts); + sw_w32(0x00000000, priv->r->dma_if_intr_tx_done_msk); + sw_w32(0x0000000f, priv->r->dma_if_intr_tx_done_sts); + } else { + sw_w32(0x00000000, priv->r->dma_if_intr_msk); + sw_w32(0xffffffff, priv->r->dma_if_intr_sts); + } + + if (priv->family_id == RTL8390_FAMILY_ID) { + /* Preserve L2 notification and NBUF settings */ + int_saved = sw_r32(priv->r->dma_if_intr_msk); + nbuf = sw_r32(RTL839X_DMA_IF_NBUF_BASE_DESC_ADDR_CTRL); + + /* Disable link change interrupt on RTL839x */ + sw_w32(0, RTL839X_IMR_PORT_LINK_STS_CHG); + sw_w32(0, RTL839X_IMR_PORT_LINK_STS_CHG + 4); + + sw_w32(0x00000000, priv->r->dma_if_intr_msk); + sw_w32(0xffffffff, priv->r->dma_if_intr_sts); + } + + /* Reset NIC */ + if (priv->family_id == RTL9300_FAMILY_ID || priv->family_id == RTL9310_FAMILY_ID) + sw_w32(0x4, priv->r->rst_glb_ctrl); + else + sw_w32(0x8, priv->r->rst_glb_ctrl); + + do { /* Wait for reset of NIC and Queues done */ + udelay(20); + } while (sw_r32(priv->r->rst_glb_ctrl) & 0xc); + mdelay(100); + + /* Setup Head of Line */ + if (priv->family_id == RTL8380_FAMILY_ID) + sw_w32(0, RTL838X_DMA_IF_RX_RING_SIZE); // Disabled on RTL8380 + if (priv->family_id == RTL8390_FAMILY_ID) + sw_w32(0xffffffff, RTL839X_DMA_IF_RX_RING_CNTR); + if (priv->family_id == RTL9300_FAMILY_ID) { + for (i = 0; i < priv->rxrings; i++) { + pos = (i % 3) * 10; + sw_w32_mask(0x3ff << pos, 0, priv->r->dma_if_rx_ring_size(i)); + sw_w32_mask(0x3ff << pos, priv->rxringlen, + priv->r->dma_if_rx_ring_cntr(i)); + } + } + + /* Re-enable link change interrupt */ + if (priv->family_id == RTL8390_FAMILY_ID) { + sw_w32(0xffffffff, RTL839X_ISR_PORT_LINK_STS_CHG); + sw_w32(0xffffffff, RTL839X_ISR_PORT_LINK_STS_CHG + 4); + sw_w32(0xffffffff, RTL839X_IMR_PORT_LINK_STS_CHG); + sw_w32(0xffffffff, RTL839X_IMR_PORT_LINK_STS_CHG + 4); + + /* Restore notification settings: on RTL838x these bits are null */ + sw_w32_mask(7 << 20, int_saved & (7 << 20), priv->r->dma_if_intr_msk); + sw_w32(nbuf, RTL839X_DMA_IF_NBUF_BASE_DESC_ADDR_CTRL); + } +} + +static void rtl838x_hw_ring_setup(struct rtl838x_eth_priv *priv) +{ + int i; + struct ring_b *ring = priv->membase; + + for (i = 0; i < priv->rxrings; i++) + sw_w32(KSEG1ADDR(&ring->rx_r[i]), priv->r->dma_rx_base + i * 4); + + for (i = 0; i < TXRINGS; i++) + sw_w32(KSEG1ADDR(&ring->tx_r[i]), priv->r->dma_tx_base + i * 4); +} + +static void rtl838x_hw_en_rxtx(struct rtl838x_eth_priv *priv) +{ + /* Disable Head of Line features for all RX rings */ + sw_w32(0xffffffff, priv->r->dma_if_rx_ring_size(0)); + + /* Truncate RX buffer to 0x640 (1600) bytes, pad TX */ + sw_w32(0x06400020, priv->r->dma_if_ctrl); + + /* Enable RX done, RX overflow and TX done interrupts */ + sw_w32(0xfffff, priv->r->dma_if_intr_msk); + + /* Enable DMA, engine expects empty FCS field */ + sw_w32_mask(0, RX_EN | TX_EN, priv->r->dma_if_ctrl); + + /* Restart TX/RX to CPU port */ + sw_w32_mask(0x0, 0x3, priv->r->mac_port_ctrl(priv->cpu_port)); + /* Set Speed, duplex, flow control + * FORCE_EN | LINK_EN | NWAY_EN | DUP_SEL + * | SPD_SEL = 0b10 | FORCE_FC_EN | PHY_MASTER_SLV_MANUAL_EN + * | MEDIA_SEL + */ + sw_w32(0x6192F, priv->r->mac_force_mode_ctrl + priv->cpu_port * 4); + + /* Enable CRC checks on CPU-port */ + sw_w32_mask(0, BIT(3), priv->r->mac_port_ctrl(priv->cpu_port)); +} + +static void rtl839x_hw_en_rxtx(struct rtl838x_eth_priv *priv) +{ + /* Setup CPU-Port: RX Buffer */ + sw_w32(0x0000c808, priv->r->dma_if_ctrl); + + /* Enable Notify, RX done, RX overflow and TX done interrupts */ + sw_w32(0x007fffff, priv->r->dma_if_intr_msk); // Notify IRQ! + + /* Enable DMA */ + sw_w32_mask(0, RX_EN | TX_EN, priv->r->dma_if_ctrl); + + /* Restart TX/RX to CPU port, enable CRC checking */ + sw_w32_mask(0x0, 0x3 | BIT(3), priv->r->mac_port_ctrl(priv->cpu_port)); + + /* CPU port joins Lookup Miss Flooding Portmask */ + // TODO: The code below should also work for the RTL838x + sw_w32(0x28000, RTL839X_TBL_ACCESS_L2_CTRL); + sw_w32_mask(0, 0x80000000, RTL839X_TBL_ACCESS_L2_DATA(0)); + sw_w32(0x38000, RTL839X_TBL_ACCESS_L2_CTRL); + + /* Force CPU port link up */ + sw_w32_mask(0, 3, priv->r->mac_force_mode_ctrl + priv->cpu_port * 4); +} + +static void rtl93xx_hw_en_rxtx(struct rtl838x_eth_priv *priv) +{ + int i, pos; + u32 v; + + /* Setup CPU-Port: RX Buffer truncated at 1600 Bytes */ + sw_w32(0x06400040, priv->r->dma_if_ctrl); + + for (i = 0; i < priv->rxrings; i++) { + pos = (i % 3) * 10; + sw_w32_mask(0x3ff << pos, priv->rxringlen << pos, priv->r->dma_if_rx_ring_size(i)); + + // Some SoCs have issues with missing underflow protection + v = (sw_r32(priv->r->dma_if_rx_ring_cntr(i)) >> pos) & 0x3ff; + sw_w32_mask(0x3ff << pos, v, priv->r->dma_if_rx_ring_cntr(i)); + } + + /* Enable Notify, RX done, RX overflow and TX done interrupts */ + sw_w32(0xffffffff, priv->r->dma_if_intr_rx_runout_msk); + sw_w32(0xffffffff, priv->r->dma_if_intr_rx_done_msk); + sw_w32(0x0000000f, priv->r->dma_if_intr_tx_done_msk); + + /* Enable DMA */ + sw_w32_mask(0, RX_EN_93XX | TX_EN_93XX, priv->r->dma_if_ctrl); + + /* Restart TX/RX to CPU port, enable CRC checking */ + sw_w32_mask(0x0, 0x3 | BIT(4), priv->r->mac_port_ctrl(priv->cpu_port)); + + sw_w32_mask(0, BIT(priv->cpu_port), RTL930X_L2_UNKN_UC_FLD_PMSK); + sw_w32(0x217, priv->r->mac_force_mode_ctrl + priv->cpu_port * 4); +} + +static void rtl838x_setup_ring_buffer(struct rtl838x_eth_priv *priv, struct ring_b *ring) +{ + int i, j; + + struct p_hdr *h; + + for (i = 0; i < priv->rxrings; i++) { + for (j = 0; j < priv->rxringlen; j++) { + h = &ring->rx_header[i][j]; + memset(h, 0, sizeof(struct p_hdr)); + h->buf = (u8 *)KSEG1ADDR(ring->rx_space + + i * priv->rxringlen * RING_BUFFER + + j * RING_BUFFER); + h->size = RING_BUFFER; + /* All rings owned by switch, last one wraps */ + ring->rx_r[i][j] = KSEG1ADDR(h) | 1 + | (j == (priv->rxringlen - 1) ? WRAP : 0); + } + ring->c_rx[i] = 0; + } + + for (i = 0; i < TXRINGS; i++) { + for (j = 0; j < TXRINGLEN; j++) { + h = &ring->tx_header[i][j]; + memset(h, 0, sizeof(struct p_hdr)); + h->buf = (u8 *)KSEG1ADDR(ring->tx_space + + i * TXRINGLEN * RING_BUFFER + + j * RING_BUFFER); + h->size = RING_BUFFER; + ring->tx_r[i][j] = KSEG1ADDR(&ring->tx_header[i][j]); + } + /* Last header is wrapping around */ + ring->tx_r[i][j-1] |= WRAP; + ring->c_tx[i] = 0; + } +} + +static void rtl839x_setup_notify_ring_buffer(struct rtl838x_eth_priv *priv) +{ + int i; + struct notify_b *b = priv->membase + sizeof(struct ring_b); + + for (i = 0; i < NOTIFY_BLOCKS; i++) + b->ring[i] = KSEG1ADDR(&b->blocks[i]) | 1 | (i == (NOTIFY_BLOCKS - 1) ? WRAP : 0); + + sw_w32((u32) b->ring, RTL839X_DMA_IF_NBUF_BASE_DESC_ADDR_CTRL); + sw_w32_mask(0x3ff << 2, 100 << 2, RTL839X_L2_NOTIFICATION_CTRL); + + /* Setup notification events */ + sw_w32_mask(0, 1 << 14, RTL839X_L2_CTRL_0); // RTL8390_L2_CTRL_0_FLUSH_NOTIFY_EN + sw_w32_mask(0, 1 << 12, RTL839X_L2_NOTIFICATION_CTRL); // SUSPEND_NOTIFICATION_EN + + /* Enable Notification */ + sw_w32_mask(0, 1 << 0, RTL839X_L2_NOTIFICATION_CTRL); + priv->lastEvent = 0; +} + +static int rtl838x_eth_open(struct net_device *ndev) +{ + unsigned long flags; + struct rtl838x_eth_priv *priv = netdev_priv(ndev); + struct ring_b *ring = priv->membase; + int i, err; + + pr_debug("%s called: RX rings %d(length %d), TX rings %d(length %d)\n", + __func__, priv->rxrings, priv->rxringlen, TXRINGS, TXRINGLEN); + + spin_lock_irqsave(&priv->lock, flags); + rtl838x_hw_reset(priv); + rtl838x_setup_ring_buffer(priv, ring); + if (priv->family_id == RTL8390_FAMILY_ID) { + rtl839x_setup_notify_ring_buffer(priv); + /* Make sure the ring structure is visible to the ASIC */ + mb(); + flush_cache_all(); + } + + rtl838x_hw_ring_setup(priv); + err = request_irq(ndev->irq, priv->r->net_irq, IRQF_SHARED, ndev->name, ndev); + if (err) { + netdev_err(ndev, "%s: could not acquire interrupt: %d\n", + __func__, err); + return err; + } + phylink_start(priv->phylink); + + for (i = 0; i < priv->rxrings; i++) + napi_enable(&priv->rx_qs[i].napi); + + switch (priv->family_id) { + case RTL8380_FAMILY_ID: + rtl838x_hw_en_rxtx(priv); + /* Trap IGMP/MLD traffic to CPU-Port */ + sw_w32(0x3, RTL838X_SPCL_TRAP_IGMP_CTRL); + /* Flush learned FDB entries on link down of a port */ + sw_w32_mask(0, BIT(7), RTL838X_L2_CTRL_0); + break; + + case RTL8390_FAMILY_ID: + rtl839x_hw_en_rxtx(priv); + // Trap MLD and IGMP messages to CPU_PORT + sw_w32(0x3, RTL839X_SPCL_TRAP_IGMP_CTRL); + /* Flush learned FDB entries on link down of a port */ + sw_w32_mask(0, BIT(7), RTL839X_L2_CTRL_0); + break; + + case RTL9300_FAMILY_ID: + rtl93xx_hw_en_rxtx(priv); + /* Flush learned FDB entries on link down of a port */ + sw_w32_mask(0, BIT(7), RTL930X_L2_CTRL); + // Trap MLD and IGMP messages to CPU_PORT + sw_w32((0x2 << 3) | 0x2, RTL930X_VLAN_APP_PKT_CTRL); + break; + + case RTL9310_FAMILY_ID: + rtl93xx_hw_en_rxtx(priv); + break; + } + + netif_tx_start_all_queues(ndev); + + spin_unlock_irqrestore(&priv->lock, flags); + + return 0; +} + +static void rtl838x_hw_stop(struct rtl838x_eth_priv *priv) +{ + u32 force_mac = priv->family_id == RTL8380_FAMILY_ID ? 0x6192C : 0x75; + u32 clear_irq = priv->family_id == RTL8380_FAMILY_ID ? 0x000fffff : 0x007fffff; + int i; + + // Disable RX/TX from/to CPU-port + sw_w32_mask(0x3, 0, priv->r->mac_port_ctrl(priv->cpu_port)); + + /* Disable traffic */ + if (priv->family_id == RTL9300_FAMILY_ID || priv->family_id == RTL9310_FAMILY_ID) + sw_w32_mask(RX_EN_93XX | TX_EN_93XX, 0, priv->r->dma_if_ctrl); + else + sw_w32_mask(RX_EN | TX_EN, 0, priv->r->dma_if_ctrl); + mdelay(200); // Test, whether this is needed + + /* Block all ports */ + if (priv->family_id == RTL8380_FAMILY_ID) { + sw_w32(0x03000000, RTL838X_TBL_ACCESS_DATA_0(0)); + sw_w32(0x00000000, RTL838X_TBL_ACCESS_DATA_0(1)); + sw_w32(1 << 15 | 2 << 12, RTL838X_TBL_ACCESS_CTRL_0); + } + + /* Flush L2 address cache */ + if (priv->family_id == RTL8380_FAMILY_ID) { + for (i = 0; i <= priv->cpu_port; i++) { + sw_w32(1 << 26 | 1 << 23 | i << 5, priv->r->l2_tbl_flush_ctrl); + do { } while (sw_r32(priv->r->l2_tbl_flush_ctrl) & (1 << 26)); + } + } else if (priv->family_id == RTL8390_FAMILY_ID) { + for (i = 0; i <= priv->cpu_port; i++) { + sw_w32(1 << 28 | 1 << 25 | i << 5, priv->r->l2_tbl_flush_ctrl); + do { } while (sw_r32(priv->r->l2_tbl_flush_ctrl) & (1 << 28)); + } + } + // TODO: L2 flush register is 64 bit on RTL931X and 930X + + /* CPU-Port: Link down */ + if (priv->family_id == RTL8380_FAMILY_ID || priv->family_id == RTL8390_FAMILY_ID) + sw_w32(force_mac, priv->r->mac_force_mode_ctrl + priv->cpu_port * 4); + else + sw_w32_mask(0x3, 0, priv->r->mac_force_mode_ctrl + priv->cpu_port *4); + mdelay(100); + + /* Disable all TX/RX interrupts */ + if (priv->family_id == RTL9300_FAMILY_ID || priv->family_id == RTL9310_FAMILY_ID) { + sw_w32(0x00000000, priv->r->dma_if_intr_rx_runout_msk); + sw_w32(0xffffffff, priv->r->dma_if_intr_rx_runout_sts); + sw_w32(0x00000000, priv->r->dma_if_intr_rx_done_msk); + sw_w32(0xffffffff, priv->r->dma_if_intr_rx_done_sts); + sw_w32(0x00000000, priv->r->dma_if_intr_tx_done_msk); + sw_w32(0x0000000f, priv->r->dma_if_intr_tx_done_sts); + } else { + sw_w32(0x00000000, priv->r->dma_if_intr_msk); + sw_w32(clear_irq, priv->r->dma_if_intr_sts); + } + + /* Disable TX/RX DMA */ + sw_w32(0x00000000, priv->r->dma_if_ctrl); + mdelay(200); +} + +static int rtl838x_eth_stop(struct net_device *ndev) +{ + unsigned long flags; + int i; + struct rtl838x_eth_priv *priv = netdev_priv(ndev); + + pr_info("in %s\n", __func__); + + spin_lock_irqsave(&priv->lock, flags); + phylink_stop(priv->phylink); + rtl838x_hw_stop(priv); + free_irq(ndev->irq, ndev); + + for (i = 0; i < priv->rxrings; i++) + napi_disable(&priv->rx_qs[i].napi); + + netif_tx_stop_all_queues(ndev); + + spin_unlock_irqrestore(&priv->lock, flags); + + return 0; +} + +static void rtl839x_eth_set_multicast_list(struct net_device *ndev) +{ + if (!(ndev->flags & (IFF_PROMISC | IFF_ALLMULTI))) { + sw_w32(0x0, RTL839X_RMA_CTRL_0); + sw_w32(0x0, RTL839X_RMA_CTRL_1); + sw_w32(0x0, RTL839X_RMA_CTRL_2); + sw_w32(0x0, RTL839X_RMA_CTRL_3); + } + if (ndev->flags & IFF_ALLMULTI) { + sw_w32(0x7fffffff, RTL839X_RMA_CTRL_0); + sw_w32(0x7fffffff, RTL839X_RMA_CTRL_1); + sw_w32(0x7fffffff, RTL839X_RMA_CTRL_2); + } + if (ndev->flags & IFF_PROMISC) { + sw_w32(0x7fffffff, RTL839X_RMA_CTRL_0); + sw_w32(0x7fffffff, RTL839X_RMA_CTRL_1); + sw_w32(0x7fffffff, RTL839X_RMA_CTRL_2); + sw_w32(0x3ff, RTL839X_RMA_CTRL_3); + } +} + +static void rtl838x_eth_set_multicast_list(struct net_device *ndev) +{ + struct rtl838x_eth_priv *priv = netdev_priv(ndev); + + if (priv->family_id == RTL8390_FAMILY_ID) + return rtl839x_eth_set_multicast_list(ndev); + + if (!(ndev->flags & (IFF_PROMISC | IFF_ALLMULTI))) { + sw_w32(0x0, RTL838X_RMA_CTRL_0); + sw_w32(0x0, RTL838X_RMA_CTRL_1); + } + if (ndev->flags & IFF_ALLMULTI) + sw_w32(0x1fffff, RTL838X_RMA_CTRL_0); + if (ndev->flags & IFF_PROMISC) { + sw_w32(0x1fffff, RTL838X_RMA_CTRL_0); + sw_w32(0x7fff, RTL838X_RMA_CTRL_1); + } +} + +static void rtl930x_eth_set_multicast_list(struct net_device *ndev) +{ + if (!(ndev->flags & (IFF_PROMISC | IFF_ALLMULTI))) { + sw_w32(0x0, RTL930X_RMA_CTRL_0); + sw_w32(0x0, RTL930X_RMA_CTRL_1); + sw_w32(0x0, RTL930X_RMA_CTRL_2); + } + if (ndev->flags & IFF_ALLMULTI) { + sw_w32(0x7fffffff, RTL930X_RMA_CTRL_0); + sw_w32(0x7fffffff, RTL930X_RMA_CTRL_1); + sw_w32(0x7fffffff, RTL930X_RMA_CTRL_2); + } + if (ndev->flags & IFF_PROMISC) { + sw_w32(0x7fffffff, RTL930X_RMA_CTRL_0); + sw_w32(0x7fffffff, RTL930X_RMA_CTRL_1); + sw_w32(0x7fffffff, RTL930X_RMA_CTRL_2); + } +} + +static void rtl931x_eth_set_multicast_list(struct net_device *ndev) +{ + if (!(ndev->flags & (IFF_PROMISC | IFF_ALLMULTI))) { + sw_w32(0x0, RTL931X_RMA_CTRL_0); + sw_w32(0x0, RTL931X_RMA_CTRL_1); + sw_w32(0x0, RTL931X_RMA_CTRL_2); + } + if (ndev->flags & IFF_ALLMULTI) { + sw_w32(0x7fffffff, RTL931X_RMA_CTRL_0); + sw_w32(0x7fffffff, RTL931X_RMA_CTRL_1); + sw_w32(0x7fffffff, RTL931X_RMA_CTRL_2); + } + if (ndev->flags & IFF_PROMISC) { + sw_w32(0x7fffffff, RTL931X_RMA_CTRL_0); + sw_w32(0x7fffffff, RTL931X_RMA_CTRL_1); + sw_w32(0x7fffffff, RTL931X_RMA_CTRL_2); + } +} + +static void rtl838x_eth_tx_timeout(struct net_device *ndev) +{ + unsigned long flags; + struct rtl838x_eth_priv *priv = netdev_priv(ndev); + + pr_warn("%s\n", __func__); + spin_lock_irqsave(&priv->lock, flags); + rtl838x_hw_stop(priv); + rtl838x_hw_ring_setup(priv); + rtl838x_hw_en_rxtx(priv); + netif_trans_update(ndev); + netif_start_queue(ndev); + spin_unlock_irqrestore(&priv->lock, flags); +} + +static int rtl838x_eth_tx(struct sk_buff *skb, struct net_device *dev) +{ + int len, i; + struct rtl838x_eth_priv *priv = netdev_priv(dev); + struct ring_b *ring = priv->membase; + uint32_t val; + int ret; + unsigned long flags; + struct p_hdr *h; + int dest_port = -1; + int q = skb_get_queue_mapping(skb) % TXRINGS; + + if (q) // Check for high prio queue + pr_debug("SKB priority: %d\n", skb->priority); + + spin_lock_irqsave(&priv->lock, flags); + len = skb->len; + + /* Check for DSA tagging at the end of the buffer */ + if (netdev_uses_dsa(dev) && skb->data[len-4] == 0x80 && skb->data[len-3] > 0 + && skb->data[len-3] < priv->cpu_port && skb->data[len-2] == 0x10 + && skb->data[len-1] == 0x00) { + /* Reuse tag space for CRC if possible */ + dest_port = skb->data[len-3]; + skb->data[len-4] = skb->data[len-3] = skb->data[len-2] = skb->data[len-1] = 0x00; + len -= 4; + } + + len += 4; // Add space for CRC + + if (skb_padto(skb, len)) { + ret = NETDEV_TX_OK; + goto txdone; + } + + /* We can send this packet if CPU owns the descriptor */ + if (!(ring->tx_r[q][ring->c_tx[q]] & 0x1)) { + + /* Set descriptor for tx */ + h = &ring->tx_header[q][ring->c_tx[q]]; + h->size = len; + h->len = len; + // On RTL8380 SoCs, small packet lengths being sent need adjustments + if (priv->family_id == RTL8380_FAMILY_ID) { + if (len < ETH_ZLEN - 4) + h->len -= 4; + } + + priv->r->create_tx_header(h, dest_port, skb->priority >> 1); + + /* Copy packet data to tx buffer */ + memcpy((void *)KSEG1ADDR(h->buf), skb->data, len); + /* Make sure packet data is visible to ASIC */ + wmb(); + + /* Hand over to switch */ + ring->tx_r[q][ring->c_tx[q]] |= 1; + + // Before starting TX, prevent a Lextra bus bug on RTL8380 SoCs + if (priv->family_id == RTL8380_FAMILY_ID) { + for (i = 0; i < 10; i++) { + val = sw_r32(priv->r->dma_if_ctrl); + if ((val & 0xc) == 0xc) + break; + } + } + + /* Tell switch to send data */ + if (priv->family_id == RTL9310_FAMILY_ID + || priv->family_id == RTL9300_FAMILY_ID) { + // Ring ID q == 0: Low priority, Ring ID = 1: High prio queue + if (!q) + sw_w32_mask(0, BIT(2), priv->r->dma_if_ctrl); + else + sw_w32_mask(0, BIT(3), priv->r->dma_if_ctrl); + } else { + sw_w32_mask(0, TX_DO, priv->r->dma_if_ctrl); + } + + dev->stats.tx_packets++; + dev->stats.tx_bytes += len; + dev_kfree_skb(skb); + ring->c_tx[q] = (ring->c_tx[q] + 1) % TXRINGLEN; + ret = NETDEV_TX_OK; + } else { + dev_warn(&priv->pdev->dev, "Data is owned by switch\n"); + ret = NETDEV_TX_BUSY; + } +txdone: + spin_unlock_irqrestore(&priv->lock, flags); + return ret; +} + +/* + * Return queue number for TX. On the RTL83XX, these queues have equal priority + * so we do round-robin + */ +u16 rtl83xx_pick_tx_queue(struct net_device *dev, struct sk_buff *skb, + struct net_device *sb_dev) +{ + static u8 last = 0; + + last++; + return last % TXRINGS; +} + +/* + * Return queue number for TX. On the RTL93XX, queue 1 is the high priority queue + */ +u16 rtl93xx_pick_tx_queue(struct net_device *dev, struct sk_buff *skb, + struct net_device *sb_dev) +{ + if (skb->priority >= TC_PRIO_CONTROL) + return 1; + return 0; +} + +static int rtl838x_hw_receive(struct net_device *dev, int r, int budget) +{ + struct rtl838x_eth_priv *priv = netdev_priv(dev); + struct ring_b *ring = priv->membase; + struct sk_buff *skb; + unsigned long flags; + int i, len, work_done = 0; + u8 *data, *skb_data; + unsigned int val; + u32 *last; + struct p_hdr *h; + bool dsa = netdev_uses_dsa(dev); + struct dsa_tag tag; + + spin_lock_irqsave(&priv->lock, flags); + last = (u32 *)KSEG1ADDR(sw_r32(priv->r->dma_if_rx_cur + r * 4)); + pr_debug("---------------------------------------------------------- RX - %d\n", r); + + do { + if ((ring->rx_r[r][ring->c_rx[r]] & 0x1)) { + if (&ring->rx_r[r][ring->c_rx[r]] != last) { + netdev_warn(dev, "Ring contention: r: %x, last %x, cur %x\n", + r, (uint32_t)last, (u32) &ring->rx_r[r][ring->c_rx[r]]); + } + break; + } + + h = &ring->rx_header[r][ring->c_rx[r]]; + data = (u8 *)KSEG1ADDR(h->buf); + len = h->len; + if (!len) + break; + work_done++; + + len -= 4; /* strip the CRC */ + /* Add 4 bytes for cpu_tag */ + if (dsa) + len += 4; + + skb = alloc_skb(len + 4, GFP_KERNEL); + skb_reserve(skb, NET_IP_ALIGN); + + if (likely(skb)) { + /* BUG: Prevent bug on RTL838x SoCs*/ + if (priv->family_id == RTL8380_FAMILY_ID) { + sw_w32(0xffffffff, priv->r->dma_if_rx_ring_size(0)); + for (i = 0; i < priv->rxrings; i++) { + /* Update each ring cnt */ + val = sw_r32(priv->r->dma_if_rx_ring_cntr(i)); + sw_w32(val, priv->r->dma_if_rx_ring_cntr(i)); + } + } + + skb_data = skb_put(skb, len); + /* Make sure data is visible */ + mb(); + memcpy(skb->data, (u8 *)KSEG1ADDR(data), len); + /* Overwrite CRC with cpu_tag */ + if (dsa) { + priv->r->decode_tag(h, &tag); + skb->data[len-4] = 0x80; + skb->data[len-3] = tag.port; + skb->data[len-2] = 0x10; + skb->data[len-1] = 0x00; + if (tag.l2_offloaded) + skb->data[len-3] |= 0x40; + } + + if (tag.queue >= 0) + pr_debug("Queue: %d, len: %d, reason %d port %d\n", + tag.queue, len, tag.reason, tag.port); + + skb->protocol = eth_type_trans(skb, dev); + if (dev->features & NETIF_F_RXCSUM) { + if (tag.crc_error) + skb_checksum_none_assert(skb); + else + skb->ip_summed = CHECKSUM_UNNECESSARY; + } + dev->stats.rx_packets++; + dev->stats.rx_bytes += len; + + netif_receive_skb(skb); + } else { + if (net_ratelimit()) + dev_warn(&dev->dev, "low on memory - packet dropped\n"); + dev->stats.rx_dropped++; + } + + /* Reset header structure */ + memset(h, 0, sizeof(struct p_hdr)); + h->buf = data; + h->size = RING_BUFFER; + + ring->rx_r[r][ring->c_rx[r]] = KSEG1ADDR(h) | 0x1 + | (ring->c_rx[r] == (priv->rxringlen - 1) ? WRAP : 0x1); + ring->c_rx[r] = (ring->c_rx[r] + 1) % priv->rxringlen; + last = (u32 *)KSEG1ADDR(sw_r32(priv->r->dma_if_rx_cur + r * 4)); + } while (&ring->rx_r[r][ring->c_rx[r]] != last && work_done < budget); + + // Update counters + priv->r->update_cntr(r, 0); + + spin_unlock_irqrestore(&priv->lock, flags); + return work_done; +} + +static int rtl838x_poll_rx(struct napi_struct *napi, int budget) +{ + struct rtl838x_rx_q *rx_q = container_of(napi, struct rtl838x_rx_q, napi); + struct rtl838x_eth_priv *priv = rx_q->priv; + int work_done = 0; + int r = rx_q->id; + int work; + + while (work_done < budget) { + work = rtl838x_hw_receive(priv->netdev, r, budget - work_done); + if (!work) + break; + work_done += work; + } + + if (work_done < budget) { + napi_complete_done(napi, work_done); + + /* Enable RX interrupt */ + if (priv->family_id == RTL9300_FAMILY_ID || priv->family_id == RTL9310_FAMILY_ID) + sw_w32(0xffffffff, priv->r->dma_if_intr_rx_done_msk); + else + sw_w32_mask(0, 0xf00ff | BIT(r + 8), priv->r->dma_if_intr_msk); + } + return work_done; +} + + +static void rtl838x_validate(struct phylink_config *config, + unsigned long *supported, + struct phylink_link_state *state) +{ + __ETHTOOL_DECLARE_LINK_MODE_MASK(mask) = { 0, }; + + pr_debug("In %s\n", __func__); + + if (!phy_interface_mode_is_rgmii(state->interface) && + state->interface != PHY_INTERFACE_MODE_1000BASEX && + state->interface != PHY_INTERFACE_MODE_MII && + state->interface != PHY_INTERFACE_MODE_REVMII && + state->interface != PHY_INTERFACE_MODE_GMII && + state->interface != PHY_INTERFACE_MODE_QSGMII && + state->interface != PHY_INTERFACE_MODE_INTERNAL && + state->interface != PHY_INTERFACE_MODE_SGMII) { + bitmap_zero(supported, __ETHTOOL_LINK_MODE_MASK_NBITS); + pr_err("Unsupported interface: %d\n", state->interface); + return; + } + + /* Allow all the expected bits */ + phylink_set(mask, Autoneg); + phylink_set_port_modes(mask); + phylink_set(mask, Pause); + phylink_set(mask, Asym_Pause); + + /* With the exclusion of MII and Reverse MII, we support Gigabit, + * including Half duplex + */ + if (state->interface != PHY_INTERFACE_MODE_MII && + state->interface != PHY_INTERFACE_MODE_REVMII) { + phylink_set(mask, 1000baseT_Full); + phylink_set(mask, 1000baseT_Half); + } + + phylink_set(mask, 10baseT_Half); + phylink_set(mask, 10baseT_Full); + phylink_set(mask, 100baseT_Half); + phylink_set(mask, 100baseT_Full); + + bitmap_and(supported, supported, mask, + __ETHTOOL_LINK_MODE_MASK_NBITS); + bitmap_and(state->advertising, state->advertising, mask, + __ETHTOOL_LINK_MODE_MASK_NBITS); +} + + +static void rtl838x_mac_config(struct phylink_config *config, + unsigned int mode, + const struct phylink_link_state *state) +{ + /* This is only being called for the master device, + * i.e. the CPU-Port. We don't need to do anything. + */ + + pr_info("In %s, mode %x\n", __func__, mode); +} + +static void rtl838x_mac_an_restart(struct phylink_config *config) +{ + struct net_device *dev = container_of(config->dev, struct net_device, dev); + struct rtl838x_eth_priv *priv = netdev_priv(dev); + + /* This works only on RTL838x chips */ + if (priv->family_id != RTL8380_FAMILY_ID) + return; + + pr_debug("In %s\n", __func__); + /* Restart by disabling and re-enabling link */ + sw_w32(0x6192D, priv->r->mac_force_mode_ctrl + priv->cpu_port * 4); + mdelay(20); + sw_w32(0x6192F, priv->r->mac_force_mode_ctrl + priv->cpu_port * 4); +} + +static int rtl838x_mac_pcs_get_state(struct phylink_config *config, + struct phylink_link_state *state) +{ + u32 speed; + struct net_device *dev = container_of(config->dev, struct net_device, dev); + struct rtl838x_eth_priv *priv = netdev_priv(dev); + int port = priv->cpu_port; + + pr_debug("In %s\n", __func__); + + state->link = priv->r->get_mac_link_sts(port) ? 1 : 0; + state->duplex = priv->r->get_mac_link_dup_sts(port) ? 1 : 0; + + speed = priv->r->get_mac_link_spd_sts(port); + switch (speed) { + case 0: + state->speed = SPEED_10; + break; + case 1: + state->speed = SPEED_100; + break; + case 2: + state->speed = SPEED_1000; + break; + default: + state->speed = SPEED_UNKNOWN; + break; + } + + state->pause &= (MLO_PAUSE_RX | MLO_PAUSE_TX); + if (priv->r->get_mac_rx_pause_sts(port)) + state->pause |= MLO_PAUSE_RX; + if (priv->r->get_mac_tx_pause_sts(port)) + state->pause |= MLO_PAUSE_TX; + + return 1; +} + +static void rtl838x_mac_link_down(struct phylink_config *config, + unsigned int mode, + phy_interface_t interface) +{ + struct net_device *dev = container_of(config->dev, struct net_device, dev); + struct rtl838x_eth_priv *priv = netdev_priv(dev); + + pr_debug("In %s\n", __func__); + /* Stop TX/RX to port */ + sw_w32_mask(0x03, 0, priv->r->mac_port_ctrl(priv->cpu_port)); +} + +static void rtl838x_mac_link_up(struct phylink_config *config, unsigned int mode, + phy_interface_t interface, + struct phy_device *phy) +{ + struct net_device *dev = container_of(config->dev, struct net_device, dev); + struct rtl838x_eth_priv *priv = netdev_priv(dev); + + pr_debug("In %s\n", __func__); + /* Restart TX/RX to port */ + sw_w32_mask(0, 0x03, priv->r->mac_port_ctrl(priv->cpu_port)); +} + +static void rtl838x_set_mac_hw(struct net_device *dev, u8 *mac) +{ + struct rtl838x_eth_priv *priv = netdev_priv(dev); + unsigned long flags; + + spin_lock_irqsave(&priv->lock, flags); + pr_debug("In %s\n", __func__); + sw_w32((mac[0] << 8) | mac[1], priv->r->mac); + sw_w32((mac[2] << 24) | (mac[3] << 16) | (mac[4] << 8) | mac[5], priv->r->mac + 4); + + if (priv->family_id == RTL8380_FAMILY_ID) { + /* 2 more registers, ALE/MAC block */ + sw_w32((mac[0] << 8) | mac[1], RTL838X_MAC_ALE); + sw_w32((mac[2] << 24) | (mac[3] << 16) | (mac[4] << 8) | mac[5], + (RTL838X_MAC_ALE + 4)); + + sw_w32((mac[0] << 8) | mac[1], RTL838X_MAC2); + sw_w32((mac[2] << 24) | (mac[3] << 16) | (mac[4] << 8) | mac[5], + RTL838X_MAC2 + 4); + } + spin_unlock_irqrestore(&priv->lock, flags); +} + +static int rtl838x_set_mac_address(struct net_device *dev, void *p) +{ + struct rtl838x_eth_priv *priv = netdev_priv(dev); + const struct sockaddr *addr = p; + u8 *mac = (u8 *) (addr->sa_data); + + if (!is_valid_ether_addr(addr->sa_data)) + return -EADDRNOTAVAIL; + + memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN); + rtl838x_set_mac_hw(dev, mac); + + pr_info("Using MAC %08x%08x\n", sw_r32(priv->r->mac), sw_r32(priv->r->mac + 4)); + return 0; +} + +static int rtl8390_init_mac(struct rtl838x_eth_priv *priv) +{ + // We will need to set-up EEE and the egress-rate limitation + return 0; +} + +static int rtl8380_init_mac(struct rtl838x_eth_priv *priv) +{ + int i; + + if (priv->family_id == 0x8390) + return rtl8390_init_mac(priv); + + pr_info("%s\n", __func__); + /* fix timer for EEE */ + sw_w32(0x5001411, RTL838X_EEE_TX_TIMER_GIGA_CTRL); + sw_w32(0x5001417, RTL838X_EEE_TX_TIMER_GELITE_CTRL); + + /* Init VLAN */ + if (priv->id == 0x8382) { + for (i = 0; i <= 28; i++) + sw_w32(0, 0xd57c + i * 0x80); + } + if (priv->id == 0x8380) { + for (i = 8; i <= 28; i++) + sw_w32(0, 0xd57c + i * 0x80); + } + return 0; +} + +static int rtl838x_get_link_ksettings(struct net_device *ndev, + struct ethtool_link_ksettings *cmd) +{ + struct rtl838x_eth_priv *priv = netdev_priv(ndev); + + pr_debug("%s called\n", __func__); + return phylink_ethtool_ksettings_get(priv->phylink, cmd); +} + +static int rtl838x_set_link_ksettings(struct net_device *ndev, + const struct ethtool_link_ksettings *cmd) +{ + struct rtl838x_eth_priv *priv = netdev_priv(ndev); + + pr_debug("%s called\n", __func__); + return phylink_ethtool_ksettings_set(priv->phylink, cmd); +} + +static int rtl838x_mdio_read(struct mii_bus *bus, int mii_id, int regnum) +{ + u32 val; + int err; + struct rtl838x_eth_priv *priv = bus->priv; + + if (mii_id >= 24 && mii_id <= 27 && priv->id == 0x8380) + return rtl838x_read_sds_phy(mii_id, regnum); + err = rtl838x_read_phy(mii_id, 0, regnum, &val); + if (err) + return err; + return val; +} + +static int rtl839x_mdio_read(struct mii_bus *bus, int mii_id, int regnum) +{ + u32 val; + int err; + struct rtl838x_eth_priv *priv = bus->priv; + + if (mii_id >= 48 && mii_id <= 49 && priv->id == 0x8393) + return rtl839x_read_sds_phy(mii_id, regnum); + + err = rtl839x_read_phy(mii_id, 0, regnum, &val); + if (err) + return err; + return val; +} + +static int rtl930x_mdio_read(struct mii_bus *bus, int mii_id, int regnum) +{ + u32 val; + int err; + + // TODO: These are hard-coded for the 2 Fibre Ports of the XGS1210 + if (mii_id >= 26 && mii_id <= 27) + return rtl930x_read_sds_phy(mii_id - 18, 0, regnum); + + if (regnum & MII_ADDR_C45) { + regnum &= ~MII_ADDR_C45; + err = rtl930x_read_mmd_phy(mii_id, regnum >> 16, regnum & 0xffff, &val); + } else { + err = rtl930x_read_phy(mii_id, 0, regnum, &val); + } + if (err) + return err; + return val; +} + +static int rtl931x_mdio_read(struct mii_bus *bus, int mii_id, int regnum) +{ + u32 val; + int err; +// struct rtl838x_eth_priv *priv = bus->priv; + +// if (mii_id >= 48 && mii_id <= 49 && priv->id == 0x8393) +// return rtl839x_read_sds_phy(mii_id, regnum); + + err = rtl931x_read_phy(mii_id, 0, regnum, &val); + if (err) + return err; + return val; +} + +static int rtl838x_mdio_write(struct mii_bus *bus, int mii_id, + int regnum, u16 value) +{ + u32 offset = 0; + struct rtl838x_eth_priv *priv = bus->priv; + + if (mii_id >= 24 && mii_id <= 27 && priv->id == 0x8380) { + if (mii_id == 26) + offset = 0x100; + sw_w32(value, RTL838X_SDS4_FIB_REG0 + offset + (regnum << 2)); + return 0; + } + return rtl838x_write_phy(mii_id, 0, regnum, value); +} + +static int rtl839x_mdio_write(struct mii_bus *bus, int mii_id, + int regnum, u16 value) +{ + struct rtl838x_eth_priv *priv = bus->priv; + + if (mii_id >= 48 && mii_id <= 49 && priv->id == 0x8393) + return rtl839x_write_sds_phy(mii_id, regnum, value); + + return rtl839x_write_phy(mii_id, 0, regnum, value); +} + +static int rtl930x_mdio_write(struct mii_bus *bus, int mii_id, + int regnum, u16 value) +{ +// struct rtl838x_eth_priv *priv = bus->priv; + +// if (mii_id >= 48 && mii_id <= 49 && priv->id == 0x8393) +// return rtl839x_write_sds_phy(mii_id, regnum, value); + if (regnum & MII_ADDR_C45) { + regnum &= ~MII_ADDR_C45; + return rtl930x_write_mmd_phy(mii_id, regnum >> 16, regnum & 0xffff, value); + } + + return rtl930x_write_phy(mii_id, 0, regnum, value); +} + +static int rtl931x_mdio_write(struct mii_bus *bus, int mii_id, + int regnum, u16 value) +{ +// struct rtl838x_eth_priv *priv = bus->priv; + +// if (mii_id >= 48 && mii_id <= 49 && priv->id == 0x8393) +// return rtl839x_write_sds_phy(mii_id, regnum, value); + + return rtl931x_write_phy(mii_id, 0, regnum, value); +} + +static int rtl838x_mdio_reset(struct mii_bus *bus) +{ + pr_debug("%s called\n", __func__); + /* Disable MAC polling the PHY so that we can start configuration */ + sw_w32(0x00000000, RTL838X_SMI_POLL_CTRL); + + /* Enable PHY control via SoC */ + sw_w32_mask(0, 1 << 15, RTL838X_SMI_GLB_CTRL); + + // Probably should reset all PHYs here... + return 0; +} + +static int rtl839x_mdio_reset(struct mii_bus *bus) +{ + return 0; + + pr_debug("%s called\n", __func__); + /* BUG: The following does not work, but should! */ + /* Disable MAC polling the PHY so that we can start configuration */ + sw_w32(0x00000000, RTL839X_SMI_PORT_POLLING_CTRL); + sw_w32(0x00000000, RTL839X_SMI_PORT_POLLING_CTRL + 4); + /* Disable PHY polling via SoC */ + sw_w32_mask(1 << 7, 0, RTL839X_SMI_GLB_CTRL); + + // Probably should reset all PHYs here... + return 0; +} + +static int rtl931x_mdio_reset(struct mii_bus *bus) +{ + sw_w32(0x00000000, RTL931X_SMI_PORT_POLLING_CTRL); + sw_w32(0x00000000, RTL931X_SMI_PORT_POLLING_CTRL + 4); + + pr_debug("%s called\n", __func__); + + return 0; +} + +static int rtl930x_mdio_reset(struct mii_bus *bus) +{ + int i; + int pos; + + pr_info("RTL930X_SMI_PORT0_15_POLLING_SEL %08x 16-27: %08x\n", + sw_r32(RTL930X_SMI_PORT0_15_POLLING_SEL), + sw_r32(RTL930X_SMI_PORT16_27_POLLING_SEL)); + + pr_info("%s: Enable SMI polling on SMI bus 0, SMI1, SMI2, disable on SMI3\n", __func__); + sw_w32_mask(BIT(20) | BIT(21) | BIT(22), BIT(23), RTL930X_SMI_GLB_CTRL); + + pr_info("RTL9300 Powering on SerDes ports\n"); + rtl9300_sds_power(24, 1); + rtl9300_sds_power(25, 1); + rtl9300_sds_power(26, 1); + rtl9300_sds_power(27, 1); + mdelay(200); + + // RTL930X_SMI_PORT0_15_POLLING_SEL 55550000 16-27: 00f9aaaa + // i.e SMI=0 for all ports + for (i = 0; i < 5; i++) + pr_info("port phy: %08x\n", sw_r32(RTL930X_SMI_PORT0_5_ADDR + i *4)); + + // 1-to-1 mapping of port to phy-address + for (i = 0; i < 24; i++) { + pos = (i % 6) * 5; + sw_w32_mask(0x1f << pos, i << pos, RTL930X_SMI_PORT0_5_ADDR + (i / 6) * 4); + } + + // ports 24 and 25 have PHY addresses 8 and 9, ports 26/27 PHY 26/27 + sw_w32(8 | 9 << 5 | 26 << 10 | 27 << 15, RTL930X_SMI_PORT0_5_ADDR + 4 * 4); + + // Ports 24 and 25 live on SMI bus 1 and 2 + sw_w32_mask(0x3 << 16, 0x1 << 16, RTL930X_SMI_PORT16_27_POLLING_SEL); + sw_w32_mask(0x3 << 18, 0x2 << 18, RTL930X_SMI_PORT16_27_POLLING_SEL); + + // SMI bus 1 and 2 speak Clause 45 TODO: Configure from .dts + sw_w32_mask(0, BIT(17) | BIT(18), RTL930X_SMI_GLB_CTRL); + + // Ports 24 and 25 are 2.5 Gig, set this type (1) + sw_w32_mask(0x7 << 12, 1 << 12, RTL930X_SMI_MAC_TYPE_CTRL); + sw_w32_mask(0x7 << 15, 1 << 15, RTL930X_SMI_MAC_TYPE_CTRL); + + return 0; +} + +static int rtl838x_mdio_init(struct rtl838x_eth_priv *priv) +{ + struct device_node *mii_np; + int ret; + + pr_debug("%s called\n", __func__); + mii_np = of_get_child_by_name(priv->pdev->dev.of_node, "mdio-bus"); + + if (!mii_np) { + dev_err(&priv->pdev->dev, "no %s child node found", "mdio-bus"); + return -ENODEV; + } + + if (!of_device_is_available(mii_np)) { + ret = -ENODEV; + goto err_put_node; + } + + priv->mii_bus = devm_mdiobus_alloc(&priv->pdev->dev); + if (!priv->mii_bus) { + ret = -ENOMEM; + goto err_put_node; + } + + switch(priv->family_id) { + case RTL8380_FAMILY_ID: + priv->mii_bus->name = "rtl838x-eth-mdio"; + priv->mii_bus->read = rtl838x_mdio_read; + priv->mii_bus->write = rtl838x_mdio_write; + priv->mii_bus->reset = rtl838x_mdio_reset; + break; + case RTL8390_FAMILY_ID: + priv->mii_bus->name = "rtl839x-eth-mdio"; + priv->mii_bus->read = rtl839x_mdio_read; + priv->mii_bus->write = rtl839x_mdio_write; + priv->mii_bus->reset = rtl839x_mdio_reset; + break; + case RTL9300_FAMILY_ID: + priv->mii_bus->name = "rtl930x-eth-mdio"; + priv->mii_bus->read = rtl930x_mdio_read; + priv->mii_bus->write = rtl930x_mdio_write; + priv->mii_bus->reset = rtl930x_mdio_reset; + // priv->mii_bus->probe_capabilities = MDIOBUS_C22_C45; TODO for linux 5.9 + break; + case RTL9310_FAMILY_ID: + priv->mii_bus->name = "rtl931x-eth-mdio"; + priv->mii_bus->read = rtl931x_mdio_read; + priv->mii_bus->write = rtl931x_mdio_write; + priv->mii_bus->reset = rtl931x_mdio_reset; +// priv->mii_bus->probe_capabilities = MDIOBUS_C22_C45; TODO for linux 5.9 + break; + } + priv->mii_bus->priv = priv; + priv->mii_bus->parent = &priv->pdev->dev; + + snprintf(priv->mii_bus->id, MII_BUS_ID_SIZE, "%pOFn", mii_np); + ret = of_mdiobus_register(priv->mii_bus, mii_np); + +err_put_node: + of_node_put(mii_np); + return ret; +} + +static int rtl838x_mdio_remove(struct rtl838x_eth_priv *priv) +{ + pr_debug("%s called\n", __func__); + if (!priv->mii_bus) + return 0; + + mdiobus_unregister(priv->mii_bus); + mdiobus_free(priv->mii_bus); + + return 0; +} + +static netdev_features_t rtl838x_fix_features(struct net_device *dev, + netdev_features_t features) +{ + return features; +} + +static int rtl83xx_set_features(struct net_device *dev, netdev_features_t features) +{ + struct rtl838x_eth_priv *priv = netdev_priv(dev); + + if ((features ^ dev->features) & NETIF_F_RXCSUM) { + if (!(features & NETIF_F_RXCSUM)) + sw_w32_mask(BIT(3), 0, priv->r->mac_port_ctrl(priv->cpu_port)); + else + sw_w32_mask(0, BIT(4), priv->r->mac_port_ctrl(priv->cpu_port)); + } + + return 0; +} + +static int rtl93xx_set_features(struct net_device *dev, netdev_features_t features) +{ + struct rtl838x_eth_priv *priv = netdev_priv(dev); + + if ((features ^ dev->features) & NETIF_F_RXCSUM) { + if (!(features & NETIF_F_RXCSUM)) + sw_w32_mask(BIT(4), 0, priv->r->mac_port_ctrl(priv->cpu_port)); + else + sw_w32_mask(0, BIT(4), priv->r->mac_port_ctrl(priv->cpu_port)); + } + + return 0; +} + +static const struct net_device_ops rtl838x_eth_netdev_ops = { + .ndo_open = rtl838x_eth_open, + .ndo_stop = rtl838x_eth_stop, + .ndo_start_xmit = rtl838x_eth_tx, + .ndo_select_queue = rtl83xx_pick_tx_queue, + .ndo_set_mac_address = rtl838x_set_mac_address, + .ndo_validate_addr = eth_validate_addr, + .ndo_set_rx_mode = rtl838x_eth_set_multicast_list, + .ndo_tx_timeout = rtl838x_eth_tx_timeout, + .ndo_set_features = rtl83xx_set_features, + .ndo_fix_features = rtl838x_fix_features, +}; + +static const struct net_device_ops rtl839x_eth_netdev_ops = { + .ndo_open = rtl838x_eth_open, + .ndo_stop = rtl838x_eth_stop, + .ndo_start_xmit = rtl838x_eth_tx, + .ndo_select_queue = rtl83xx_pick_tx_queue, + .ndo_set_mac_address = rtl838x_set_mac_address, + .ndo_validate_addr = eth_validate_addr, + .ndo_set_rx_mode = rtl839x_eth_set_multicast_list, + .ndo_tx_timeout = rtl838x_eth_tx_timeout, + .ndo_set_features = rtl83xx_set_features, + .ndo_fix_features = rtl838x_fix_features, +}; + +static const struct net_device_ops rtl930x_eth_netdev_ops = { + .ndo_open = rtl838x_eth_open, + .ndo_stop = rtl838x_eth_stop, + .ndo_start_xmit = rtl838x_eth_tx, + .ndo_select_queue = rtl93xx_pick_tx_queue, + .ndo_set_mac_address = rtl838x_set_mac_address, + .ndo_validate_addr = eth_validate_addr, + .ndo_set_rx_mode = rtl930x_eth_set_multicast_list, + .ndo_tx_timeout = rtl838x_eth_tx_timeout, + .ndo_set_features = rtl93xx_set_features, + .ndo_fix_features = rtl838x_fix_features, +}; + +static const struct net_device_ops rtl931x_eth_netdev_ops = { + .ndo_open = rtl838x_eth_open, + .ndo_stop = rtl838x_eth_stop, + .ndo_start_xmit = rtl838x_eth_tx, + .ndo_select_queue = rtl93xx_pick_tx_queue, + .ndo_set_mac_address = rtl838x_set_mac_address, + .ndo_validate_addr = eth_validate_addr, + .ndo_set_rx_mode = rtl931x_eth_set_multicast_list, + .ndo_tx_timeout = rtl838x_eth_tx_timeout, + .ndo_set_features = rtl93xx_set_features, + .ndo_fix_features = rtl838x_fix_features, +}; + +static const struct phylink_mac_ops rtl838x_phylink_ops = { + .validate = rtl838x_validate, + .mac_link_state = rtl838x_mac_pcs_get_state, + .mac_an_restart = rtl838x_mac_an_restart, + .mac_config = rtl838x_mac_config, + .mac_link_down = rtl838x_mac_link_down, + .mac_link_up = rtl838x_mac_link_up, +}; + +static const struct ethtool_ops rtl838x_ethtool_ops = { + .get_link_ksettings = rtl838x_get_link_ksettings, + .set_link_ksettings = rtl838x_set_link_ksettings, +}; + +static int __init rtl838x_eth_probe(struct platform_device *pdev) +{ + struct net_device *dev; + struct device_node *dn = pdev->dev.of_node; + struct rtl838x_eth_priv *priv; + struct resource *res, *mem; + phy_interface_t phy_mode; + struct phylink *phylink; + int err = 0, i, rxrings, rxringlen; + struct ring_b *ring; + + pr_info("Probing RTL838X eth device pdev: %x, dev: %x\n", + (u32)pdev, (u32)(&(pdev->dev))); + + if (!dn) { + dev_err(&pdev->dev, "No DT found\n"); + return -EINVAL; + } + + rxrings = (soc_info.family == RTL8380_FAMILY_ID + || soc_info.family == RTL8390_FAMILY_ID) ? 8 : 32; + rxrings = rxrings > MAX_RXRINGS ? MAX_RXRINGS : rxrings; + rxringlen = MAX_ENTRIES / rxrings; + rxringlen = rxringlen > MAX_RXLEN ? MAX_RXLEN : rxringlen; + + dev = alloc_etherdev_mqs(sizeof(struct rtl838x_eth_priv), TXRINGS, rxrings); + if (!dev) { + err = -ENOMEM; + goto err_free; + } + SET_NETDEV_DEV(dev, &pdev->dev); + priv = netdev_priv(dev); + + /* obtain buffer memory space */ + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (res) { + mem = devm_request_mem_region(&pdev->dev, res->start, + resource_size(res), res->name); + if (!mem) { + dev_err(&pdev->dev, "cannot request memory space\n"); + err = -ENXIO; + goto err_free; + } + + dev->mem_start = mem->start; + dev->mem_end = mem->end; + } else { + dev_err(&pdev->dev, "cannot request IO resource\n"); + err = -ENXIO; + goto err_free; + } + + /* Allocate buffer memory */ + priv->membase = dmam_alloc_coherent(&pdev->dev, rxrings * rxringlen * RING_BUFFER + + sizeof(struct ring_b) + sizeof(struct notify_b), + (void *)&dev->mem_start, GFP_KERNEL); + if (!priv->membase) { + dev_err(&pdev->dev, "cannot allocate DMA buffer\n"); + err = -ENOMEM; + goto err_free; + } + + // Allocate ring-buffer space at the end of the allocated memory + ring = priv->membase; + ring->rx_space = priv->membase + sizeof(struct ring_b) + sizeof(struct notify_b); + + spin_lock_init(&priv->lock); + + /* obtain device IRQ number */ + res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); + if (!res) { + dev_err(&pdev->dev, "cannot obtain IRQ, using default 24\n"); + dev->irq = 24; + } else { + dev->irq = res->start; + } + dev->ethtool_ops = &rtl838x_ethtool_ops; + dev->min_mtu = ETH_ZLEN; + dev->max_mtu = 1536; + dev->features = NETIF_F_RXCSUM | NETIF_F_HW_CSUM; + dev->hw_features = NETIF_F_RXCSUM; + + priv->id = soc_info.id; + priv->family_id = soc_info.family; + if (priv->id) { + pr_info("Found SoC ID: %4x: %s, family %x\n", + priv->id, soc_info.name, priv->family_id); + } else { + pr_err("Unknown chip id (%04x)\n", priv->id); + return -ENODEV; + } + + switch (priv->family_id) { + case RTL8380_FAMILY_ID: + priv->cpu_port = RTL838X_CPU_PORT; + priv->r = &rtl838x_reg; + dev->netdev_ops = &rtl838x_eth_netdev_ops; + break; + case RTL8390_FAMILY_ID: + priv->cpu_port = RTL839X_CPU_PORT; + priv->r = &rtl839x_reg; + dev->netdev_ops = &rtl839x_eth_netdev_ops; + break; + case RTL9300_FAMILY_ID: + priv->cpu_port = RTL930X_CPU_PORT; + priv->r = &rtl930x_reg; + dev->netdev_ops = &rtl930x_eth_netdev_ops; + break; + case RTL9310_FAMILY_ID: + priv->cpu_port = RTL931X_CPU_PORT; + priv->r = &rtl931x_reg; + dev->netdev_ops = &rtl931x_eth_netdev_ops; + break; + default: + pr_err("Unknown SoC family\n"); + return -ENODEV; + } + priv->rxringlen = rxringlen; + priv->rxrings = rxrings; + + rtl8380_init_mac(priv); + + /* try to get mac address in the following order: + * 1) from device tree data + * 2) from internal registers set by bootloader + */ + of_get_mac_address(pdev->dev.of_node, dev->dev_addr); + if (is_valid_ether_addr(dev->dev_addr)) { + rtl838x_set_mac_hw(dev, (u8 *)dev->dev_addr); + } else { + dev->dev_addr[0] = (sw_r32(priv->r->mac) >> 8) & 0xff; + dev->dev_addr[1] = sw_r32(priv->r->mac) & 0xff; + dev->dev_addr[2] = (sw_r32(priv->r->mac + 4) >> 24) & 0xff; + dev->dev_addr[3] = (sw_r32(priv->r->mac + 4) >> 16) & 0xff; + dev->dev_addr[4] = (sw_r32(priv->r->mac + 4) >> 8) & 0xff; + dev->dev_addr[5] = sw_r32(priv->r->mac + 4) & 0xff; + } + /* if the address is invalid, use a random value */ + if (!is_valid_ether_addr(dev->dev_addr)) { + struct sockaddr sa = { AF_UNSPEC }; + + netdev_warn(dev, "Invalid MAC address, using random\n"); + eth_hw_addr_random(dev); + memcpy(sa.sa_data, dev->dev_addr, ETH_ALEN); + if (rtl838x_set_mac_address(dev, &sa)) + netdev_warn(dev, "Failed to set MAC address.\n"); + } + pr_info("Using MAC %08x%08x\n", sw_r32(priv->r->mac), + sw_r32(priv->r->mac + 4)); + strcpy(dev->name, "eth%d"); + priv->pdev = pdev; + priv->netdev = dev; + + err = rtl838x_mdio_init(priv); + if (err) + goto err_free; + + err = register_netdev(dev); + if (err) + goto err_free; + + for (i = 0; i < priv->rxrings; i++) { + priv->rx_qs[i].id = i; + priv->rx_qs[i].priv = priv; + netif_napi_add(dev, &priv->rx_qs[i].napi, rtl838x_poll_rx, 64); + } + + platform_set_drvdata(pdev, dev); + + phy_mode = of_get_phy_mode(dn); + if (phy_mode < 0) { + dev_err(&pdev->dev, "incorrect phy-mode\n"); + err = -EINVAL; + goto err_free; + } + priv->phylink_config.dev = &dev->dev; + priv->phylink_config.type = PHYLINK_NETDEV; + + phylink = phylink_create(&priv->phylink_config, pdev->dev.fwnode, + phy_mode, &rtl838x_phylink_ops); + if (IS_ERR(phylink)) { + err = PTR_ERR(phylink); + goto err_free; + } + priv->phylink = phylink; + + return 0; + +err_free: + pr_err("Error setting up netdev, freeing it again.\n"); + free_netdev(dev); + return err; +} + +static int rtl838x_eth_remove(struct platform_device *pdev) +{ + struct net_device *dev = platform_get_drvdata(pdev); + struct rtl838x_eth_priv *priv = netdev_priv(dev); + int i; + + if (dev) { + pr_info("Removing platform driver for rtl838x-eth\n"); + rtl838x_mdio_remove(priv); + rtl838x_hw_stop(priv); + + netif_tx_stop_all_queues(dev); + + for (i = 0; i < priv->rxrings; i++) + netif_napi_del(&priv->rx_qs[i].napi); + + unregister_netdev(dev); + free_netdev(dev); + } + return 0; +} + +static const struct of_device_id rtl838x_eth_of_ids[] = { + { .compatible = "realtek,rtl838x-eth"}, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, rtl838x_eth_of_ids); + +static struct platform_driver rtl838x_eth_driver = { + .probe = rtl838x_eth_probe, + .remove = rtl838x_eth_remove, + .driver = { + .name = "rtl838x-eth", + .pm = NULL, + .of_match_table = rtl838x_eth_of_ids, + }, +}; + +module_platform_driver(rtl838x_eth_driver); + +MODULE_AUTHOR("B. Koblitz"); +MODULE_DESCRIPTION("RTL838X SoC Ethernet Driver"); +MODULE_LICENSE("GPL"); |