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1725 lines
44 KiB
1725 lines
44 KiB
// SPDX-License-Identifier: (GPL-2.0 or MIT) |
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/* |
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* DSA driver for: |
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* Hirschmann Hellcreek TSN switch. |
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* |
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* Copyright (C) 2019-2021 Linutronix GmbH |
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* Author Kurt Kanzenbach <[email protected]> |
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*/ |
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|
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#include <linux/kernel.h> |
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#include <linux/module.h> |
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#include <linux/device.h> |
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#include <linux/of.h> |
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#include <linux/of_device.h> |
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#include <linux/of_mdio.h> |
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#include <linux/platform_device.h> |
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#include <linux/bitops.h> |
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#include <linux/if_bridge.h> |
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#include <linux/if_vlan.h> |
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#include <linux/etherdevice.h> |
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#include <linux/random.h> |
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#include <linux/iopoll.h> |
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#include <linux/mutex.h> |
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#include <linux/delay.h> |
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#include <net/dsa.h> |
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|
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#include "hellcreek.h" |
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#include "hellcreek_ptp.h" |
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#include "hellcreek_hwtstamp.h" |
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|
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static const struct hellcreek_counter hellcreek_counter[] = { |
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{ 0x00, "RxFiltered", }, |
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{ 0x01, "RxOctets1k", }, |
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{ 0x02, "RxVTAG", }, |
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{ 0x03, "RxL2BAD", }, |
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{ 0x04, "RxOverloadDrop", }, |
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{ 0x05, "RxUC", }, |
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{ 0x06, "RxMC", }, |
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{ 0x07, "RxBC", }, |
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{ 0x08, "RxRS<64", }, |
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{ 0x09, "RxRS64", }, |
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{ 0x0a, "RxRS65_127", }, |
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{ 0x0b, "RxRS128_255", }, |
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{ 0x0c, "RxRS256_511", }, |
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{ 0x0d, "RxRS512_1023", }, |
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{ 0x0e, "RxRS1024_1518", }, |
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{ 0x0f, "RxRS>1518", }, |
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{ 0x10, "TxTailDropQueue0", }, |
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{ 0x11, "TxTailDropQueue1", }, |
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{ 0x12, "TxTailDropQueue2", }, |
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{ 0x13, "TxTailDropQueue3", }, |
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{ 0x14, "TxTailDropQueue4", }, |
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{ 0x15, "TxTailDropQueue5", }, |
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{ 0x16, "TxTailDropQueue6", }, |
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{ 0x17, "TxTailDropQueue7", }, |
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{ 0x18, "RxTrafficClass0", }, |
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{ 0x19, "RxTrafficClass1", }, |
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{ 0x1a, "RxTrafficClass2", }, |
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{ 0x1b, "RxTrafficClass3", }, |
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{ 0x1c, "RxTrafficClass4", }, |
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{ 0x1d, "RxTrafficClass5", }, |
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{ 0x1e, "RxTrafficClass6", }, |
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{ 0x1f, "RxTrafficClass7", }, |
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{ 0x21, "TxOctets1k", }, |
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{ 0x22, "TxVTAG", }, |
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{ 0x23, "TxL2BAD", }, |
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{ 0x25, "TxUC", }, |
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{ 0x26, "TxMC", }, |
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{ 0x27, "TxBC", }, |
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{ 0x28, "TxTS<64", }, |
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{ 0x29, "TxTS64", }, |
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{ 0x2a, "TxTS65_127", }, |
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{ 0x2b, "TxTS128_255", }, |
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{ 0x2c, "TxTS256_511", }, |
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{ 0x2d, "TxTS512_1023", }, |
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{ 0x2e, "TxTS1024_1518", }, |
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{ 0x2f, "TxTS>1518", }, |
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{ 0x30, "TxTrafficClassOverrun0", }, |
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{ 0x31, "TxTrafficClassOverrun1", }, |
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{ 0x32, "TxTrafficClassOverrun2", }, |
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{ 0x33, "TxTrafficClassOverrun3", }, |
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{ 0x34, "TxTrafficClassOverrun4", }, |
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{ 0x35, "TxTrafficClassOverrun5", }, |
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{ 0x36, "TxTrafficClassOverrun6", }, |
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{ 0x37, "TxTrafficClassOverrun7", }, |
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{ 0x38, "TxTrafficClass0", }, |
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{ 0x39, "TxTrafficClass1", }, |
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{ 0x3a, "TxTrafficClass2", }, |
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{ 0x3b, "TxTrafficClass3", }, |
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{ 0x3c, "TxTrafficClass4", }, |
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{ 0x3d, "TxTrafficClass5", }, |
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{ 0x3e, "TxTrafficClass6", }, |
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{ 0x3f, "TxTrafficClass7", }, |
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}; |
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|
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static u16 hellcreek_read(struct hellcreek *hellcreek, unsigned int offset) |
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{ |
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return readw(hellcreek->base + offset); |
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} |
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|
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static u16 hellcreek_read_ctrl(struct hellcreek *hellcreek) |
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{ |
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return readw(hellcreek->base + HR_CTRL_C); |
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} |
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|
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static u16 hellcreek_read_stat(struct hellcreek *hellcreek) |
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{ |
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return readw(hellcreek->base + HR_SWSTAT); |
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} |
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|
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static void hellcreek_write(struct hellcreek *hellcreek, u16 data, |
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unsigned int offset) |
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{ |
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writew(data, hellcreek->base + offset); |
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} |
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static void hellcreek_select_port(struct hellcreek *hellcreek, int port) |
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{ |
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u16 val = port << HR_PSEL_PTWSEL_SHIFT; |
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|
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hellcreek_write(hellcreek, val, HR_PSEL); |
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} |
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static void hellcreek_select_prio(struct hellcreek *hellcreek, int prio) |
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{ |
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u16 val = prio << HR_PSEL_PRTCWSEL_SHIFT; |
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hellcreek_write(hellcreek, val, HR_PSEL); |
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} |
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static void hellcreek_select_counter(struct hellcreek *hellcreek, int counter) |
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{ |
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u16 val = counter << HR_CSEL_SHIFT; |
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|
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hellcreek_write(hellcreek, val, HR_CSEL); |
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|
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/* Data sheet states to wait at least 20 internal clock cycles */ |
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ndelay(200); |
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} |
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static void hellcreek_select_vlan(struct hellcreek *hellcreek, int vid, |
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bool pvid) |
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{ |
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u16 val = 0; |
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|
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/* Set pvid bit first */ |
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if (pvid) |
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val |= HR_VIDCFG_PVID; |
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hellcreek_write(hellcreek, val, HR_VIDCFG); |
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|
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/* Set vlan */ |
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val |= vid << HR_VIDCFG_VID_SHIFT; |
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hellcreek_write(hellcreek, val, HR_VIDCFG); |
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} |
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static void hellcreek_select_tgd(struct hellcreek *hellcreek, int port) |
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{ |
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u16 val = port << TR_TGDSEL_TDGSEL_SHIFT; |
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|
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hellcreek_write(hellcreek, val, TR_TGDSEL); |
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} |
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static int hellcreek_wait_until_ready(struct hellcreek *hellcreek) |
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{ |
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u16 val; |
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|
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/* Wait up to 1ms, although 3 us should be enough */ |
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return readx_poll_timeout(hellcreek_read_ctrl, hellcreek, |
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val, val & HR_CTRL_C_READY, |
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3, 1000); |
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} |
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static int hellcreek_wait_until_transitioned(struct hellcreek *hellcreek) |
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{ |
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u16 val; |
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return readx_poll_timeout_atomic(hellcreek_read_ctrl, hellcreek, |
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val, !(val & HR_CTRL_C_TRANSITION), |
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1, 1000); |
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} |
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static int hellcreek_wait_fdb_ready(struct hellcreek *hellcreek) |
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{ |
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u16 val; |
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return readx_poll_timeout_atomic(hellcreek_read_stat, hellcreek, |
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val, !(val & HR_SWSTAT_BUSY), |
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1, 1000); |
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} |
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static int hellcreek_detect(struct hellcreek *hellcreek) |
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{ |
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u16 id, rel_low, rel_high, date_low, date_high, tgd_ver; |
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u8 tgd_maj, tgd_min; |
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u32 rel, date; |
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id = hellcreek_read(hellcreek, HR_MODID_C); |
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rel_low = hellcreek_read(hellcreek, HR_REL_L_C); |
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rel_high = hellcreek_read(hellcreek, HR_REL_H_C); |
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date_low = hellcreek_read(hellcreek, HR_BLD_L_C); |
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date_high = hellcreek_read(hellcreek, HR_BLD_H_C); |
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tgd_ver = hellcreek_read(hellcreek, TR_TGDVER); |
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|
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if (id != hellcreek->pdata->module_id) |
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return -ENODEV; |
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rel = rel_low | (rel_high << 16); |
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date = date_low | (date_high << 16); |
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tgd_maj = (tgd_ver & TR_TGDVER_REV_MAJ_MASK) >> TR_TGDVER_REV_MAJ_SHIFT; |
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tgd_min = (tgd_ver & TR_TGDVER_REV_MIN_MASK) >> TR_TGDVER_REV_MIN_SHIFT; |
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|
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dev_info(hellcreek->dev, "Module ID=%02x Release=%04x Date=%04x TGD Version=%02x.%02x\n", |
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id, rel, date, tgd_maj, tgd_min); |
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|
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return 0; |
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} |
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static void hellcreek_feature_detect(struct hellcreek *hellcreek) |
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{ |
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u16 features; |
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|
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features = hellcreek_read(hellcreek, HR_FEABITS0); |
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|
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/* Only detect the size of the FDB table. The size and current |
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* utilization can be queried via devlink. |
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*/ |
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hellcreek->fdb_entries = ((features & HR_FEABITS0_FDBBINS_MASK) >> |
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HR_FEABITS0_FDBBINS_SHIFT) * 32; |
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} |
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static enum dsa_tag_protocol hellcreek_get_tag_protocol(struct dsa_switch *ds, |
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int port, |
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enum dsa_tag_protocol mp) |
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{ |
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return DSA_TAG_PROTO_HELLCREEK; |
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} |
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static int hellcreek_port_enable(struct dsa_switch *ds, int port, |
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struct phy_device *phy) |
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{ |
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struct hellcreek *hellcreek = ds->priv; |
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struct hellcreek_port *hellcreek_port; |
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u16 val; |
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hellcreek_port = &hellcreek->ports[port]; |
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dev_dbg(hellcreek->dev, "Enable port %d\n", port); |
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mutex_lock(&hellcreek->reg_lock); |
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hellcreek_select_port(hellcreek, port); |
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val = hellcreek_port->ptcfg; |
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val |= HR_PTCFG_ADMIN_EN; |
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hellcreek_write(hellcreek, val, HR_PTCFG); |
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hellcreek_port->ptcfg = val; |
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mutex_unlock(&hellcreek->reg_lock); |
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return 0; |
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} |
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static void hellcreek_port_disable(struct dsa_switch *ds, int port) |
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{ |
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struct hellcreek *hellcreek = ds->priv; |
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struct hellcreek_port *hellcreek_port; |
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u16 val; |
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hellcreek_port = &hellcreek->ports[port]; |
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dev_dbg(hellcreek->dev, "Disable port %d\n", port); |
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mutex_lock(&hellcreek->reg_lock); |
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hellcreek_select_port(hellcreek, port); |
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val = hellcreek_port->ptcfg; |
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val &= ~HR_PTCFG_ADMIN_EN; |
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hellcreek_write(hellcreek, val, HR_PTCFG); |
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hellcreek_port->ptcfg = val; |
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mutex_unlock(&hellcreek->reg_lock); |
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} |
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static void hellcreek_get_strings(struct dsa_switch *ds, int port, |
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u32 stringset, uint8_t *data) |
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{ |
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int i; |
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for (i = 0; i < ARRAY_SIZE(hellcreek_counter); ++i) { |
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const struct hellcreek_counter *counter = &hellcreek_counter[i]; |
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strlcpy(data + i * ETH_GSTRING_LEN, |
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counter->name, ETH_GSTRING_LEN); |
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} |
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} |
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static int hellcreek_get_sset_count(struct dsa_switch *ds, int port, int sset) |
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{ |
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if (sset != ETH_SS_STATS) |
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return 0; |
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return ARRAY_SIZE(hellcreek_counter); |
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} |
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static void hellcreek_get_ethtool_stats(struct dsa_switch *ds, int port, |
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uint64_t *data) |
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{ |
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struct hellcreek *hellcreek = ds->priv; |
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struct hellcreek_port *hellcreek_port; |
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int i; |
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hellcreek_port = &hellcreek->ports[port]; |
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for (i = 0; i < ARRAY_SIZE(hellcreek_counter); ++i) { |
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const struct hellcreek_counter *counter = &hellcreek_counter[i]; |
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u8 offset = counter->offset + port * 64; |
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u16 high, low; |
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u64 value; |
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mutex_lock(&hellcreek->reg_lock); |
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hellcreek_select_counter(hellcreek, offset); |
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|
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/* The registers are locked internally by selecting the |
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* counter. So low and high can be read without reading high |
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* again. |
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*/ |
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high = hellcreek_read(hellcreek, HR_CRDH); |
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low = hellcreek_read(hellcreek, HR_CRDL); |
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value = ((u64)high << 16) | low; |
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hellcreek_port->counter_values[i] += value; |
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data[i] = hellcreek_port->counter_values[i]; |
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|
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mutex_unlock(&hellcreek->reg_lock); |
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} |
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} |
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|
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static u16 hellcreek_private_vid(int port) |
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{ |
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return VLAN_N_VID - port + 1; |
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} |
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|
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static int hellcreek_vlan_prepare(struct dsa_switch *ds, int port, |
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const struct switchdev_obj_port_vlan *vlan, |
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struct netlink_ext_ack *extack) |
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{ |
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struct hellcreek *hellcreek = ds->priv; |
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int i; |
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|
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dev_dbg(hellcreek->dev, "VLAN prepare for port %d\n", port); |
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|
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/* Restriction: Make sure that nobody uses the "private" VLANs. These |
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* VLANs are internally used by the driver to ensure port |
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* separation. Thus, they cannot be used by someone else. |
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*/ |
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for (i = 0; i < hellcreek->pdata->num_ports; ++i) { |
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const u16 restricted_vid = hellcreek_private_vid(i); |
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|
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if (!dsa_is_user_port(ds, i)) |
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continue; |
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|
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if (vlan->vid == restricted_vid) { |
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NL_SET_ERR_MSG_MOD(extack, "VID restricted by driver"); |
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return -EBUSY; |
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} |
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} |
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|
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return 0; |
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} |
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|
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static void hellcreek_select_vlan_params(struct hellcreek *hellcreek, int port, |
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int *shift, int *mask) |
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{ |
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switch (port) { |
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case 0: |
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*shift = HR_VIDMBRCFG_P0MBR_SHIFT; |
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*mask = HR_VIDMBRCFG_P0MBR_MASK; |
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break; |
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case 1: |
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*shift = HR_VIDMBRCFG_P1MBR_SHIFT; |
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*mask = HR_VIDMBRCFG_P1MBR_MASK; |
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break; |
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case 2: |
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*shift = HR_VIDMBRCFG_P2MBR_SHIFT; |
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*mask = HR_VIDMBRCFG_P2MBR_MASK; |
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break; |
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case 3: |
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*shift = HR_VIDMBRCFG_P3MBR_SHIFT; |
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*mask = HR_VIDMBRCFG_P3MBR_MASK; |
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break; |
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default: |
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*shift = *mask = 0; |
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dev_err(hellcreek->dev, "Unknown port %d selected!\n", port); |
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} |
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} |
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|
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static void hellcreek_apply_vlan(struct hellcreek *hellcreek, int port, u16 vid, |
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bool pvid, bool untagged) |
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{ |
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int shift, mask; |
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u16 val; |
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|
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dev_dbg(hellcreek->dev, "Apply VLAN: port=%d vid=%u pvid=%d untagged=%d", |
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port, vid, pvid, untagged); |
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|
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mutex_lock(&hellcreek->reg_lock); |
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|
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hellcreek_select_port(hellcreek, port); |
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hellcreek_select_vlan(hellcreek, vid, pvid); |
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|
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/* Setup port vlan membership */ |
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hellcreek_select_vlan_params(hellcreek, port, &shift, &mask); |
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val = hellcreek->vidmbrcfg[vid]; |
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val &= ~mask; |
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if (untagged) |
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val |= HELLCREEK_VLAN_UNTAGGED_MEMBER << shift; |
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else |
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val |= HELLCREEK_VLAN_TAGGED_MEMBER << shift; |
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|
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hellcreek_write(hellcreek, val, HR_VIDMBRCFG); |
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hellcreek->vidmbrcfg[vid] = val; |
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|
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mutex_unlock(&hellcreek->reg_lock); |
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} |
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|
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static void hellcreek_unapply_vlan(struct hellcreek *hellcreek, int port, |
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u16 vid) |
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{ |
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int shift, mask; |
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u16 val; |
|
|
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dev_dbg(hellcreek->dev, "Unapply VLAN: port=%d vid=%u\n", port, vid); |
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|
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mutex_lock(&hellcreek->reg_lock); |
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|
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hellcreek_select_vlan(hellcreek, vid, 0); |
|
|
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/* Setup port vlan membership */ |
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hellcreek_select_vlan_params(hellcreek, port, &shift, &mask); |
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val = hellcreek->vidmbrcfg[vid]; |
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val &= ~mask; |
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val |= HELLCREEK_VLAN_NO_MEMBER << shift; |
|
|
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hellcreek_write(hellcreek, val, HR_VIDMBRCFG); |
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hellcreek->vidmbrcfg[vid] = val; |
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|
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mutex_unlock(&hellcreek->reg_lock); |
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} |
|
|
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static int hellcreek_vlan_add(struct dsa_switch *ds, int port, |
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const struct switchdev_obj_port_vlan *vlan, |
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struct netlink_ext_ack *extack) |
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{ |
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bool untagged = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED; |
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bool pvid = vlan->flags & BRIDGE_VLAN_INFO_PVID; |
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struct hellcreek *hellcreek = ds->priv; |
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int err; |
|
|
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err = hellcreek_vlan_prepare(ds, port, vlan, extack); |
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if (err) |
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return err; |
|
|
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dev_dbg(hellcreek->dev, "Add VLAN %d on port %d, %s, %s\n", |
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vlan->vid, port, untagged ? "untagged" : "tagged", |
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pvid ? "PVID" : "no PVID"); |
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|
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hellcreek_apply_vlan(hellcreek, port, vlan->vid, pvid, untagged); |
|
|
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return 0; |
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} |
|
|
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static int hellcreek_vlan_del(struct dsa_switch *ds, int port, |
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const struct switchdev_obj_port_vlan *vlan) |
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{ |
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struct hellcreek *hellcreek = ds->priv; |
|
|
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dev_dbg(hellcreek->dev, "Remove VLAN %d on port %d\n", vlan->vid, port); |
|
|
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hellcreek_unapply_vlan(hellcreek, port, vlan->vid); |
|
|
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return 0; |
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} |
|
|
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static void hellcreek_port_stp_state_set(struct dsa_switch *ds, int port, |
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u8 state) |
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{ |
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struct hellcreek *hellcreek = ds->priv; |
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struct hellcreek_port *hellcreek_port; |
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const char *new_state; |
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u16 val; |
|
|
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mutex_lock(&hellcreek->reg_lock); |
|
|
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hellcreek_port = &hellcreek->ports[port]; |
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val = hellcreek_port->ptcfg; |
|
|
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switch (state) { |
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case BR_STATE_DISABLED: |
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new_state = "DISABLED"; |
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val |= HR_PTCFG_BLOCKED; |
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val &= ~HR_PTCFG_LEARNING_EN; |
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break; |
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case BR_STATE_BLOCKING: |
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new_state = "BLOCKING"; |
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val |= HR_PTCFG_BLOCKED; |
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val &= ~HR_PTCFG_LEARNING_EN; |
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break; |
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case BR_STATE_LISTENING: |
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new_state = "LISTENING"; |
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val |= HR_PTCFG_BLOCKED; |
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val &= ~HR_PTCFG_LEARNING_EN; |
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break; |
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case BR_STATE_LEARNING: |
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new_state = "LEARNING"; |
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val |= HR_PTCFG_BLOCKED; |
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val |= HR_PTCFG_LEARNING_EN; |
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break; |
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case BR_STATE_FORWARDING: |
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new_state = "FORWARDING"; |
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val &= ~HR_PTCFG_BLOCKED; |
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val |= HR_PTCFG_LEARNING_EN; |
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break; |
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default: |
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new_state = "UNKNOWN"; |
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} |
|
|
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hellcreek_select_port(hellcreek, port); |
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hellcreek_write(hellcreek, val, HR_PTCFG); |
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hellcreek_port->ptcfg = val; |
|
|
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mutex_unlock(&hellcreek->reg_lock); |
|
|
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dev_dbg(hellcreek->dev, "Configured STP state for port %d: %s\n", |
|
port, new_state); |
|
} |
|
|
|
static void hellcreek_setup_ingressflt(struct hellcreek *hellcreek, int port, |
|
bool enable) |
|
{ |
|
struct hellcreek_port *hellcreek_port = &hellcreek->ports[port]; |
|
u16 ptcfg; |
|
|
|
mutex_lock(&hellcreek->reg_lock); |
|
|
|
ptcfg = hellcreek_port->ptcfg; |
|
|
|
if (enable) |
|
ptcfg |= HR_PTCFG_INGRESSFLT; |
|
else |
|
ptcfg &= ~HR_PTCFG_INGRESSFLT; |
|
|
|
hellcreek_select_port(hellcreek, port); |
|
hellcreek_write(hellcreek, ptcfg, HR_PTCFG); |
|
hellcreek_port->ptcfg = ptcfg; |
|
|
|
mutex_unlock(&hellcreek->reg_lock); |
|
} |
|
|
|
static void hellcreek_setup_vlan_awareness(struct hellcreek *hellcreek, |
|
bool enable) |
|
{ |
|
u16 swcfg; |
|
|
|
mutex_lock(&hellcreek->reg_lock); |
|
|
|
swcfg = hellcreek->swcfg; |
|
|
|
if (enable) |
|
swcfg |= HR_SWCFG_VLAN_UNAWARE; |
|
else |
|
swcfg &= ~HR_SWCFG_VLAN_UNAWARE; |
|
|
|
hellcreek_write(hellcreek, swcfg, HR_SWCFG); |
|
|
|
mutex_unlock(&hellcreek->reg_lock); |
|
} |
|
|
|
/* Default setup for DSA: VLAN <X>: CPU and Port <X> egress untagged. */ |
|
static void hellcreek_setup_vlan_membership(struct dsa_switch *ds, int port, |
|
bool enabled) |
|
{ |
|
const u16 vid = hellcreek_private_vid(port); |
|
int upstream = dsa_upstream_port(ds, port); |
|
struct hellcreek *hellcreek = ds->priv; |
|
|
|
/* Apply vid to port as egress untagged and port vlan id */ |
|
if (enabled) |
|
hellcreek_apply_vlan(hellcreek, port, vid, true, true); |
|
else |
|
hellcreek_unapply_vlan(hellcreek, port, vid); |
|
|
|
/* Apply vid to cpu port as well */ |
|
if (enabled) |
|
hellcreek_apply_vlan(hellcreek, upstream, vid, false, true); |
|
else |
|
hellcreek_unapply_vlan(hellcreek, upstream, vid); |
|
} |
|
|
|
static int hellcreek_port_bridge_join(struct dsa_switch *ds, int port, |
|
struct net_device *br) |
|
{ |
|
struct hellcreek *hellcreek = ds->priv; |
|
|
|
dev_dbg(hellcreek->dev, "Port %d joins a bridge\n", port); |
|
|
|
/* When joining a vlan_filtering bridge, keep the switch VLAN aware */ |
|
if (!ds->vlan_filtering) |
|
hellcreek_setup_vlan_awareness(hellcreek, false); |
|
|
|
/* Drop private vlans */ |
|
hellcreek_setup_vlan_membership(ds, port, false); |
|
|
|
return 0; |
|
} |
|
|
|
static void hellcreek_port_bridge_leave(struct dsa_switch *ds, int port, |
|
struct net_device *br) |
|
{ |
|
struct hellcreek *hellcreek = ds->priv; |
|
|
|
dev_dbg(hellcreek->dev, "Port %d leaves a bridge\n", port); |
|
|
|
/* Enable VLAN awareness */ |
|
hellcreek_setup_vlan_awareness(hellcreek, true); |
|
|
|
/* Enable private vlans */ |
|
hellcreek_setup_vlan_membership(ds, port, true); |
|
} |
|
|
|
static int __hellcreek_fdb_add(struct hellcreek *hellcreek, |
|
const struct hellcreek_fdb_entry *entry) |
|
{ |
|
u16 meta = 0; |
|
|
|
dev_dbg(hellcreek->dev, "Add static FDB entry: MAC=%pM, MASK=0x%02x, " |
|
"OBT=%d, REPRIO_EN=%d, PRIO=%d\n", entry->mac, entry->portmask, |
|
entry->is_obt, entry->reprio_en, entry->reprio_tc); |
|
|
|
/* Add mac address */ |
|
hellcreek_write(hellcreek, entry->mac[1] | (entry->mac[0] << 8), HR_FDBWDH); |
|
hellcreek_write(hellcreek, entry->mac[3] | (entry->mac[2] << 8), HR_FDBWDM); |
|
hellcreek_write(hellcreek, entry->mac[5] | (entry->mac[4] << 8), HR_FDBWDL); |
|
|
|
/* Meta data */ |
|
meta |= entry->portmask << HR_FDBWRM0_PORTMASK_SHIFT; |
|
if (entry->is_obt) |
|
meta |= HR_FDBWRM0_OBT; |
|
if (entry->reprio_en) { |
|
meta |= HR_FDBWRM0_REPRIO_EN; |
|
meta |= entry->reprio_tc << HR_FDBWRM0_REPRIO_TC_SHIFT; |
|
} |
|
hellcreek_write(hellcreek, meta, HR_FDBWRM0); |
|
|
|
/* Commit */ |
|
hellcreek_write(hellcreek, 0x00, HR_FDBWRCMD); |
|
|
|
/* Wait until done */ |
|
return hellcreek_wait_fdb_ready(hellcreek); |
|
} |
|
|
|
static int __hellcreek_fdb_del(struct hellcreek *hellcreek, |
|
const struct hellcreek_fdb_entry *entry) |
|
{ |
|
dev_dbg(hellcreek->dev, "Delete FDB entry: MAC=%pM!\n", entry->mac); |
|
|
|
/* Delete by matching idx */ |
|
hellcreek_write(hellcreek, entry->idx | HR_FDBWRCMD_FDBDEL, HR_FDBWRCMD); |
|
|
|
/* Wait until done */ |
|
return hellcreek_wait_fdb_ready(hellcreek); |
|
} |
|
|
|
/* Retrieve the index of a FDB entry by mac address. Currently we search through |
|
* the complete table in hardware. If that's too slow, we might have to cache |
|
* the complete FDB table in software. |
|
*/ |
|
static int hellcreek_fdb_get(struct hellcreek *hellcreek, |
|
const unsigned char *dest, |
|
struct hellcreek_fdb_entry *entry) |
|
{ |
|
size_t i; |
|
|
|
/* Set read pointer to zero: The read of HR_FDBMAX (read-only register) |
|
* should reset the internal pointer. But, that doesn't work. The vendor |
|
* suggested a subsequent write as workaround. Same for HR_FDBRDH below. |
|
*/ |
|
hellcreek_read(hellcreek, HR_FDBMAX); |
|
hellcreek_write(hellcreek, 0x00, HR_FDBMAX); |
|
|
|
/* We have to read the complete table, because the switch/driver might |
|
* enter new entries anywhere. |
|
*/ |
|
for (i = 0; i < hellcreek->fdb_entries; ++i) { |
|
unsigned char addr[ETH_ALEN]; |
|
u16 meta, mac; |
|
|
|
meta = hellcreek_read(hellcreek, HR_FDBMDRD); |
|
mac = hellcreek_read(hellcreek, HR_FDBRDL); |
|
addr[5] = mac & 0xff; |
|
addr[4] = (mac & 0xff00) >> 8; |
|
mac = hellcreek_read(hellcreek, HR_FDBRDM); |
|
addr[3] = mac & 0xff; |
|
addr[2] = (mac & 0xff00) >> 8; |
|
mac = hellcreek_read(hellcreek, HR_FDBRDH); |
|
addr[1] = mac & 0xff; |
|
addr[0] = (mac & 0xff00) >> 8; |
|
|
|
/* Force next entry */ |
|
hellcreek_write(hellcreek, 0x00, HR_FDBRDH); |
|
|
|
if (memcmp(addr, dest, ETH_ALEN)) |
|
continue; |
|
|
|
/* Match found */ |
|
entry->idx = i; |
|
entry->portmask = (meta & HR_FDBMDRD_PORTMASK_MASK) >> |
|
HR_FDBMDRD_PORTMASK_SHIFT; |
|
entry->age = (meta & HR_FDBMDRD_AGE_MASK) >> |
|
HR_FDBMDRD_AGE_SHIFT; |
|
entry->is_obt = !!(meta & HR_FDBMDRD_OBT); |
|
entry->pass_blocked = !!(meta & HR_FDBMDRD_PASS_BLOCKED); |
|
entry->is_static = !!(meta & HR_FDBMDRD_STATIC); |
|
entry->reprio_tc = (meta & HR_FDBMDRD_REPRIO_TC_MASK) >> |
|
HR_FDBMDRD_REPRIO_TC_SHIFT; |
|
entry->reprio_en = !!(meta & HR_FDBMDRD_REPRIO_EN); |
|
memcpy(entry->mac, addr, sizeof(addr)); |
|
|
|
return 0; |
|
} |
|
|
|
return -ENOENT; |
|
} |
|
|
|
static int hellcreek_fdb_add(struct dsa_switch *ds, int port, |
|
const unsigned char *addr, u16 vid) |
|
{ |
|
struct hellcreek_fdb_entry entry = { 0 }; |
|
struct hellcreek *hellcreek = ds->priv; |
|
int ret; |
|
|
|
dev_dbg(hellcreek->dev, "Add FDB entry for MAC=%pM\n", addr); |
|
|
|
mutex_lock(&hellcreek->reg_lock); |
|
|
|
ret = hellcreek_fdb_get(hellcreek, addr, &entry); |
|
if (ret) { |
|
/* Not found */ |
|
memcpy(entry.mac, addr, sizeof(entry.mac)); |
|
entry.portmask = BIT(port); |
|
|
|
ret = __hellcreek_fdb_add(hellcreek, &entry); |
|
if (ret) { |
|
dev_err(hellcreek->dev, "Failed to add FDB entry!\n"); |
|
goto out; |
|
} |
|
} else { |
|
/* Found */ |
|
ret = __hellcreek_fdb_del(hellcreek, &entry); |
|
if (ret) { |
|
dev_err(hellcreek->dev, "Failed to delete FDB entry!\n"); |
|
goto out; |
|
} |
|
|
|
entry.portmask |= BIT(port); |
|
|
|
ret = __hellcreek_fdb_add(hellcreek, &entry); |
|
if (ret) { |
|
dev_err(hellcreek->dev, "Failed to add FDB entry!\n"); |
|
goto out; |
|
} |
|
} |
|
|
|
out: |
|
mutex_unlock(&hellcreek->reg_lock); |
|
|
|
return ret; |
|
} |
|
|
|
static int hellcreek_fdb_del(struct dsa_switch *ds, int port, |
|
const unsigned char *addr, u16 vid) |
|
{ |
|
struct hellcreek_fdb_entry entry = { 0 }; |
|
struct hellcreek *hellcreek = ds->priv; |
|
int ret; |
|
|
|
dev_dbg(hellcreek->dev, "Delete FDB entry for MAC=%pM\n", addr); |
|
|
|
mutex_lock(&hellcreek->reg_lock); |
|
|
|
ret = hellcreek_fdb_get(hellcreek, addr, &entry); |
|
if (ret) { |
|
/* Not found */ |
|
dev_err(hellcreek->dev, "FDB entry for deletion not found!\n"); |
|
} else { |
|
/* Found */ |
|
ret = __hellcreek_fdb_del(hellcreek, &entry); |
|
if (ret) { |
|
dev_err(hellcreek->dev, "Failed to delete FDB entry!\n"); |
|
goto out; |
|
} |
|
|
|
entry.portmask &= ~BIT(port); |
|
|
|
if (entry.portmask != 0x00) { |
|
ret = __hellcreek_fdb_add(hellcreek, &entry); |
|
if (ret) { |
|
dev_err(hellcreek->dev, "Failed to add FDB entry!\n"); |
|
goto out; |
|
} |
|
} |
|
} |
|
|
|
out: |
|
mutex_unlock(&hellcreek->reg_lock); |
|
|
|
return ret; |
|
} |
|
|
|
static int hellcreek_fdb_dump(struct dsa_switch *ds, int port, |
|
dsa_fdb_dump_cb_t *cb, void *data) |
|
{ |
|
struct hellcreek *hellcreek = ds->priv; |
|
u16 entries; |
|
size_t i; |
|
|
|
mutex_lock(&hellcreek->reg_lock); |
|
|
|
/* Set read pointer to zero: The read of HR_FDBMAX (read-only register) |
|
* should reset the internal pointer. But, that doesn't work. The vendor |
|
* suggested a subsequent write as workaround. Same for HR_FDBRDH below. |
|
*/ |
|
entries = hellcreek_read(hellcreek, HR_FDBMAX); |
|
hellcreek_write(hellcreek, 0x00, HR_FDBMAX); |
|
|
|
dev_dbg(hellcreek->dev, "FDB dump for port %d, entries=%d!\n", port, entries); |
|
|
|
/* Read table */ |
|
for (i = 0; i < hellcreek->fdb_entries; ++i) { |
|
unsigned char null_addr[ETH_ALEN] = { 0 }; |
|
struct hellcreek_fdb_entry entry = { 0 }; |
|
u16 meta, mac; |
|
|
|
meta = hellcreek_read(hellcreek, HR_FDBMDRD); |
|
mac = hellcreek_read(hellcreek, HR_FDBRDL); |
|
entry.mac[5] = mac & 0xff; |
|
entry.mac[4] = (mac & 0xff00) >> 8; |
|
mac = hellcreek_read(hellcreek, HR_FDBRDM); |
|
entry.mac[3] = mac & 0xff; |
|
entry.mac[2] = (mac & 0xff00) >> 8; |
|
mac = hellcreek_read(hellcreek, HR_FDBRDH); |
|
entry.mac[1] = mac & 0xff; |
|
entry.mac[0] = (mac & 0xff00) >> 8; |
|
|
|
/* Force next entry */ |
|
hellcreek_write(hellcreek, 0x00, HR_FDBRDH); |
|
|
|
/* Check valid */ |
|
if (!memcmp(entry.mac, null_addr, ETH_ALEN)) |
|
continue; |
|
|
|
entry.portmask = (meta & HR_FDBMDRD_PORTMASK_MASK) >> |
|
HR_FDBMDRD_PORTMASK_SHIFT; |
|
entry.is_static = !!(meta & HR_FDBMDRD_STATIC); |
|
|
|
/* Check port mask */ |
|
if (!(entry.portmask & BIT(port))) |
|
continue; |
|
|
|
cb(entry.mac, 0, entry.is_static, data); |
|
} |
|
|
|
mutex_unlock(&hellcreek->reg_lock); |
|
|
|
return 0; |
|
} |
|
|
|
static int hellcreek_vlan_filtering(struct dsa_switch *ds, int port, |
|
bool vlan_filtering, |
|
struct netlink_ext_ack *extack) |
|
{ |
|
struct hellcreek *hellcreek = ds->priv; |
|
|
|
dev_dbg(hellcreek->dev, "%s VLAN filtering on port %d\n", |
|
vlan_filtering ? "Enable" : "Disable", port); |
|
|
|
/* Configure port to drop packages with not known vids */ |
|
hellcreek_setup_ingressflt(hellcreek, port, vlan_filtering); |
|
|
|
/* Enable VLAN awareness on the switch. This save due to |
|
* ds->vlan_filtering_is_global. |
|
*/ |
|
hellcreek_setup_vlan_awareness(hellcreek, vlan_filtering); |
|
|
|
return 0; |
|
} |
|
|
|
static int hellcreek_enable_ip_core(struct hellcreek *hellcreek) |
|
{ |
|
int ret; |
|
u16 val; |
|
|
|
mutex_lock(&hellcreek->reg_lock); |
|
|
|
val = hellcreek_read(hellcreek, HR_CTRL_C); |
|
val |= HR_CTRL_C_ENABLE; |
|
hellcreek_write(hellcreek, val, HR_CTRL_C); |
|
ret = hellcreek_wait_until_transitioned(hellcreek); |
|
|
|
mutex_unlock(&hellcreek->reg_lock); |
|
|
|
return ret; |
|
} |
|
|
|
static void hellcreek_setup_cpu_and_tunnel_port(struct hellcreek *hellcreek) |
|
{ |
|
struct hellcreek_port *tunnel_port = &hellcreek->ports[TUNNEL_PORT]; |
|
struct hellcreek_port *cpu_port = &hellcreek->ports[CPU_PORT]; |
|
u16 ptcfg = 0; |
|
|
|
ptcfg |= HR_PTCFG_LEARNING_EN | HR_PTCFG_ADMIN_EN; |
|
|
|
mutex_lock(&hellcreek->reg_lock); |
|
|
|
hellcreek_select_port(hellcreek, CPU_PORT); |
|
hellcreek_write(hellcreek, ptcfg, HR_PTCFG); |
|
|
|
hellcreek_select_port(hellcreek, TUNNEL_PORT); |
|
hellcreek_write(hellcreek, ptcfg, HR_PTCFG); |
|
|
|
cpu_port->ptcfg = ptcfg; |
|
tunnel_port->ptcfg = ptcfg; |
|
|
|
mutex_unlock(&hellcreek->reg_lock); |
|
} |
|
|
|
static void hellcreek_setup_tc_identity_mapping(struct hellcreek *hellcreek) |
|
{ |
|
int i; |
|
|
|
/* The switch has multiple egress queues per port. The queue is selected |
|
* via the PCP field in the VLAN header. The switch internally deals |
|
* with traffic classes instead of PCP values and this mapping is |
|
* configurable. |
|
* |
|
* The default mapping is (PCP - TC): |
|
* 7 - 7 |
|
* 6 - 6 |
|
* 5 - 5 |
|
* 4 - 4 |
|
* 3 - 3 |
|
* 2 - 1 |
|
* 1 - 0 |
|
* 0 - 2 |
|
* |
|
* The default should be an identity mapping. |
|
*/ |
|
|
|
for (i = 0; i < 8; ++i) { |
|
mutex_lock(&hellcreek->reg_lock); |
|
|
|
hellcreek_select_prio(hellcreek, i); |
|
hellcreek_write(hellcreek, |
|
i << HR_PRTCCFG_PCP_TC_MAP_SHIFT, |
|
HR_PRTCCFG); |
|
|
|
mutex_unlock(&hellcreek->reg_lock); |
|
} |
|
} |
|
|
|
static int hellcreek_setup_fdb(struct hellcreek *hellcreek) |
|
{ |
|
static struct hellcreek_fdb_entry ptp = { |
|
/* MAC: 01-1B-19-00-00-00 */ |
|
.mac = { 0x01, 0x1b, 0x19, 0x00, 0x00, 0x00 }, |
|
.portmask = 0x03, /* Management ports */ |
|
.age = 0, |
|
.is_obt = 0, |
|
.pass_blocked = 0, |
|
.is_static = 1, |
|
.reprio_tc = 6, /* TC: 6 as per IEEE 802.1AS */ |
|
.reprio_en = 1, |
|
}; |
|
static struct hellcreek_fdb_entry p2p = { |
|
/* MAC: 01-80-C2-00-00-0E */ |
|
.mac = { 0x01, 0x80, 0xc2, 0x00, 0x00, 0x0e }, |
|
.portmask = 0x03, /* Management ports */ |
|
.age = 0, |
|
.is_obt = 0, |
|
.pass_blocked = 0, |
|
.is_static = 1, |
|
.reprio_tc = 6, /* TC: 6 as per IEEE 802.1AS */ |
|
.reprio_en = 1, |
|
}; |
|
int ret; |
|
|
|
mutex_lock(&hellcreek->reg_lock); |
|
ret = __hellcreek_fdb_add(hellcreek, &ptp); |
|
if (ret) |
|
goto out; |
|
ret = __hellcreek_fdb_add(hellcreek, &p2p); |
|
out: |
|
mutex_unlock(&hellcreek->reg_lock); |
|
|
|
return ret; |
|
} |
|
|
|
static u64 hellcreek_devlink_vlan_table_get(void *priv) |
|
{ |
|
struct hellcreek *hellcreek = priv; |
|
u64 count = 0; |
|
int i; |
|
|
|
mutex_lock(&hellcreek->reg_lock); |
|
for (i = 0; i < VLAN_N_VID; ++i) |
|
if (hellcreek->vidmbrcfg[i]) |
|
count++; |
|
mutex_unlock(&hellcreek->reg_lock); |
|
|
|
return count; |
|
} |
|
|
|
static u64 hellcreek_devlink_fdb_table_get(void *priv) |
|
{ |
|
struct hellcreek *hellcreek = priv; |
|
u64 count = 0; |
|
|
|
/* Reading this register has side effects. Synchronize against the other |
|
* FDB operations. |
|
*/ |
|
mutex_lock(&hellcreek->reg_lock); |
|
count = hellcreek_read(hellcreek, HR_FDBMAX); |
|
mutex_unlock(&hellcreek->reg_lock); |
|
|
|
return count; |
|
} |
|
|
|
static int hellcreek_setup_devlink_resources(struct dsa_switch *ds) |
|
{ |
|
struct devlink_resource_size_params size_vlan_params; |
|
struct devlink_resource_size_params size_fdb_params; |
|
struct hellcreek *hellcreek = ds->priv; |
|
int err; |
|
|
|
devlink_resource_size_params_init(&size_vlan_params, VLAN_N_VID, |
|
VLAN_N_VID, |
|
1, DEVLINK_RESOURCE_UNIT_ENTRY); |
|
|
|
devlink_resource_size_params_init(&size_fdb_params, |
|
hellcreek->fdb_entries, |
|
hellcreek->fdb_entries, |
|
1, DEVLINK_RESOURCE_UNIT_ENTRY); |
|
|
|
err = dsa_devlink_resource_register(ds, "VLAN", VLAN_N_VID, |
|
HELLCREEK_DEVLINK_PARAM_ID_VLAN_TABLE, |
|
DEVLINK_RESOURCE_ID_PARENT_TOP, |
|
&size_vlan_params); |
|
if (err) |
|
goto out; |
|
|
|
err = dsa_devlink_resource_register(ds, "FDB", hellcreek->fdb_entries, |
|
HELLCREEK_DEVLINK_PARAM_ID_FDB_TABLE, |
|
DEVLINK_RESOURCE_ID_PARENT_TOP, |
|
&size_fdb_params); |
|
if (err) |
|
goto out; |
|
|
|
dsa_devlink_resource_occ_get_register(ds, |
|
HELLCREEK_DEVLINK_PARAM_ID_VLAN_TABLE, |
|
hellcreek_devlink_vlan_table_get, |
|
hellcreek); |
|
|
|
dsa_devlink_resource_occ_get_register(ds, |
|
HELLCREEK_DEVLINK_PARAM_ID_FDB_TABLE, |
|
hellcreek_devlink_fdb_table_get, |
|
hellcreek); |
|
|
|
return 0; |
|
|
|
out: |
|
dsa_devlink_resources_unregister(ds); |
|
|
|
return err; |
|
} |
|
|
|
static int hellcreek_setup(struct dsa_switch *ds) |
|
{ |
|
struct hellcreek *hellcreek = ds->priv; |
|
u16 swcfg = 0; |
|
int ret, i; |
|
|
|
dev_dbg(hellcreek->dev, "Set up the switch\n"); |
|
|
|
/* Let's go */ |
|
ret = hellcreek_enable_ip_core(hellcreek); |
|
if (ret) { |
|
dev_err(hellcreek->dev, "Failed to enable IP core!\n"); |
|
return ret; |
|
} |
|
|
|
/* Enable CPU/Tunnel ports */ |
|
hellcreek_setup_cpu_and_tunnel_port(hellcreek); |
|
|
|
/* Switch config: Keep defaults, enable FDB aging and learning and tag |
|
* each frame from/to cpu port for DSA tagging. Also enable the length |
|
* aware shaping mode. This eliminates the need for Qbv guard bands. |
|
*/ |
|
swcfg |= HR_SWCFG_FDBAGE_EN | |
|
HR_SWCFG_FDBLRN_EN | |
|
HR_SWCFG_ALWAYS_OBT | |
|
(HR_SWCFG_LAS_ON << HR_SWCFG_LAS_MODE_SHIFT); |
|
hellcreek->swcfg = swcfg; |
|
hellcreek_write(hellcreek, swcfg, HR_SWCFG); |
|
|
|
/* Initial vlan membership to reflect port separation */ |
|
for (i = 0; i < ds->num_ports; ++i) { |
|
if (!dsa_is_user_port(ds, i)) |
|
continue; |
|
|
|
hellcreek_setup_vlan_membership(ds, i, true); |
|
} |
|
|
|
/* Configure PCP <-> TC mapping */ |
|
hellcreek_setup_tc_identity_mapping(hellcreek); |
|
|
|
/* The VLAN awareness is a global switch setting. Therefore, mixed vlan |
|
* filtering setups are not supported. |
|
*/ |
|
ds->vlan_filtering_is_global = true; |
|
|
|
/* Intercept _all_ PTP multicast traffic */ |
|
ret = hellcreek_setup_fdb(hellcreek); |
|
if (ret) { |
|
dev_err(hellcreek->dev, |
|
"Failed to insert static PTP FDB entries\n"); |
|
return ret; |
|
} |
|
|
|
/* Register devlink resources with DSA */ |
|
ret = hellcreek_setup_devlink_resources(ds); |
|
if (ret) { |
|
dev_err(hellcreek->dev, |
|
"Failed to setup devlink resources!\n"); |
|
return ret; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static void hellcreek_teardown(struct dsa_switch *ds) |
|
{ |
|
dsa_devlink_resources_unregister(ds); |
|
} |
|
|
|
static void hellcreek_phylink_validate(struct dsa_switch *ds, int port, |
|
unsigned long *supported, |
|
struct phylink_link_state *state) |
|
{ |
|
__ETHTOOL_DECLARE_LINK_MODE_MASK(mask) = { 0, }; |
|
struct hellcreek *hellcreek = ds->priv; |
|
|
|
dev_dbg(hellcreek->dev, "Phylink validate for port %d\n", port); |
|
|
|
/* The MAC settings are a hardware configuration option and cannot be |
|
* changed at run time or by strapping. Therefore the attached PHYs |
|
* should be programmed to only advertise settings which are supported |
|
* by the hardware. |
|
*/ |
|
if (hellcreek->pdata->is_100_mbits) |
|
phylink_set(mask, 100baseT_Full); |
|
else |
|
phylink_set(mask, 1000baseT_Full); |
|
|
|
bitmap_and(supported, supported, mask, |
|
__ETHTOOL_LINK_MODE_MASK_NBITS); |
|
bitmap_and(state->advertising, state->advertising, mask, |
|
__ETHTOOL_LINK_MODE_MASK_NBITS); |
|
} |
|
|
|
static int |
|
hellcreek_port_prechangeupper(struct dsa_switch *ds, int port, |
|
struct netdev_notifier_changeupper_info *info) |
|
{ |
|
struct hellcreek *hellcreek = ds->priv; |
|
bool used = true; |
|
int ret = -EBUSY; |
|
u16 vid; |
|
int i; |
|
|
|
dev_dbg(hellcreek->dev, "Pre change upper for port %d\n", port); |
|
|
|
/* |
|
* Deny VLAN devices on top of lan ports with the same VLAN ids, because |
|
* it breaks the port separation due to the private VLANs. Example: |
|
* |
|
* lan0.100 *and* lan1.100 cannot be used in parallel. However, lan0.99 |
|
* and lan1.100 works. |
|
*/ |
|
|
|
if (!is_vlan_dev(info->upper_dev)) |
|
return 0; |
|
|
|
vid = vlan_dev_vlan_id(info->upper_dev); |
|
|
|
/* For all ports, check bitmaps */ |
|
mutex_lock(&hellcreek->vlan_lock); |
|
for (i = 0; i < hellcreek->pdata->num_ports; ++i) { |
|
if (!dsa_is_user_port(ds, i)) |
|
continue; |
|
|
|
if (port == i) |
|
continue; |
|
|
|
used = used && test_bit(vid, hellcreek->ports[i].vlan_dev_bitmap); |
|
} |
|
|
|
if (used) |
|
goto out; |
|
|
|
/* Update bitmap */ |
|
set_bit(vid, hellcreek->ports[port].vlan_dev_bitmap); |
|
|
|
ret = 0; |
|
|
|
out: |
|
mutex_unlock(&hellcreek->vlan_lock); |
|
|
|
return ret; |
|
} |
|
|
|
static void hellcreek_setup_gcl(struct hellcreek *hellcreek, int port, |
|
const struct tc_taprio_qopt_offload *schedule) |
|
{ |
|
const struct tc_taprio_sched_entry *cur, *initial, *next; |
|
size_t i; |
|
|
|
cur = initial = &schedule->entries[0]; |
|
next = cur + 1; |
|
|
|
for (i = 1; i <= schedule->num_entries; ++i) { |
|
u16 data; |
|
u8 gates; |
|
|
|
cur++; |
|
next++; |
|
|
|
if (i == schedule->num_entries) |
|
gates = initial->gate_mask ^ |
|
cur->gate_mask; |
|
else |
|
gates = next->gate_mask ^ |
|
cur->gate_mask; |
|
|
|
data = gates; |
|
|
|
if (i == schedule->num_entries) |
|
data |= TR_GCLDAT_GCLWRLAST; |
|
|
|
/* Gates states */ |
|
hellcreek_write(hellcreek, data, TR_GCLDAT); |
|
|
|
/* Time interval */ |
|
hellcreek_write(hellcreek, |
|
cur->interval & 0x0000ffff, |
|
TR_GCLTIL); |
|
hellcreek_write(hellcreek, |
|
(cur->interval & 0xffff0000) >> 16, |
|
TR_GCLTIH); |
|
|
|
/* Commit entry */ |
|
data = ((i - 1) << TR_GCLCMD_GCLWRADR_SHIFT) | |
|
(initial->gate_mask << |
|
TR_GCLCMD_INIT_GATE_STATES_SHIFT); |
|
hellcreek_write(hellcreek, data, TR_GCLCMD); |
|
} |
|
} |
|
|
|
static void hellcreek_set_cycle_time(struct hellcreek *hellcreek, |
|
const struct tc_taprio_qopt_offload *schedule) |
|
{ |
|
u32 cycle_time = schedule->cycle_time; |
|
|
|
hellcreek_write(hellcreek, cycle_time & 0x0000ffff, TR_CTWRL); |
|
hellcreek_write(hellcreek, (cycle_time & 0xffff0000) >> 16, TR_CTWRH); |
|
} |
|
|
|
static void hellcreek_switch_schedule(struct hellcreek *hellcreek, |
|
ktime_t start_time) |
|
{ |
|
struct timespec64 ts = ktime_to_timespec64(start_time); |
|
|
|
/* Start schedule at this point of time */ |
|
hellcreek_write(hellcreek, ts.tv_nsec & 0x0000ffff, TR_ESTWRL); |
|
hellcreek_write(hellcreek, (ts.tv_nsec & 0xffff0000) >> 16, TR_ESTWRH); |
|
|
|
/* Arm timer, set seconds and switch schedule */ |
|
hellcreek_write(hellcreek, TR_ESTCMD_ESTARM | TR_ESTCMD_ESTSWCFG | |
|
((ts.tv_sec & TR_ESTCMD_ESTSEC_MASK) << |
|
TR_ESTCMD_ESTSEC_SHIFT), TR_ESTCMD); |
|
} |
|
|
|
static bool hellcreek_schedule_startable(struct hellcreek *hellcreek, int port) |
|
{ |
|
struct hellcreek_port *hellcreek_port = &hellcreek->ports[port]; |
|
s64 base_time_ns, current_ns; |
|
|
|
/* The switch allows a schedule to be started only eight seconds within |
|
* the future. Therefore, check the current PTP time if the schedule is |
|
* startable or not. |
|
*/ |
|
|
|
/* Use the "cached" time. That should be alright, as it's updated quite |
|
* frequently in the PTP code. |
|
*/ |
|
mutex_lock(&hellcreek->ptp_lock); |
|
current_ns = hellcreek->seconds * NSEC_PER_SEC + hellcreek->last_ts; |
|
mutex_unlock(&hellcreek->ptp_lock); |
|
|
|
/* Calculate difference to admin base time */ |
|
base_time_ns = ktime_to_ns(hellcreek_port->current_schedule->base_time); |
|
|
|
return base_time_ns - current_ns < (s64)8 * NSEC_PER_SEC; |
|
} |
|
|
|
static void hellcreek_start_schedule(struct hellcreek *hellcreek, int port) |
|
{ |
|
struct hellcreek_port *hellcreek_port = &hellcreek->ports[port]; |
|
ktime_t base_time, current_time; |
|
s64 current_ns; |
|
u32 cycle_time; |
|
|
|
/* First select port */ |
|
hellcreek_select_tgd(hellcreek, port); |
|
|
|
/* Forward base time into the future if needed */ |
|
mutex_lock(&hellcreek->ptp_lock); |
|
current_ns = hellcreek->seconds * NSEC_PER_SEC + hellcreek->last_ts; |
|
mutex_unlock(&hellcreek->ptp_lock); |
|
|
|
current_time = ns_to_ktime(current_ns); |
|
base_time = hellcreek_port->current_schedule->base_time; |
|
cycle_time = hellcreek_port->current_schedule->cycle_time; |
|
|
|
if (ktime_compare(current_time, base_time) > 0) { |
|
s64 n; |
|
|
|
n = div64_s64(ktime_sub_ns(current_time, base_time), |
|
cycle_time); |
|
base_time = ktime_add_ns(base_time, (n + 1) * cycle_time); |
|
} |
|
|
|
/* Set admin base time and switch schedule */ |
|
hellcreek_switch_schedule(hellcreek, base_time); |
|
|
|
taprio_offload_free(hellcreek_port->current_schedule); |
|
hellcreek_port->current_schedule = NULL; |
|
|
|
dev_dbg(hellcreek->dev, "Armed EST timer for port %d\n", |
|
hellcreek_port->port); |
|
} |
|
|
|
static void hellcreek_check_schedule(struct work_struct *work) |
|
{ |
|
struct delayed_work *dw = to_delayed_work(work); |
|
struct hellcreek_port *hellcreek_port; |
|
struct hellcreek *hellcreek; |
|
bool startable; |
|
|
|
hellcreek_port = dw_to_hellcreek_port(dw); |
|
hellcreek = hellcreek_port->hellcreek; |
|
|
|
mutex_lock(&hellcreek->reg_lock); |
|
|
|
/* Check starting time */ |
|
startable = hellcreek_schedule_startable(hellcreek, |
|
hellcreek_port->port); |
|
if (startable) { |
|
hellcreek_start_schedule(hellcreek, hellcreek_port->port); |
|
mutex_unlock(&hellcreek->reg_lock); |
|
return; |
|
} |
|
|
|
mutex_unlock(&hellcreek->reg_lock); |
|
|
|
/* Reschedule */ |
|
schedule_delayed_work(&hellcreek_port->schedule_work, |
|
HELLCREEK_SCHEDULE_PERIOD); |
|
} |
|
|
|
static int hellcreek_port_set_schedule(struct dsa_switch *ds, int port, |
|
struct tc_taprio_qopt_offload *taprio) |
|
{ |
|
struct hellcreek *hellcreek = ds->priv; |
|
struct hellcreek_port *hellcreek_port; |
|
bool startable; |
|
u16 ctrl; |
|
|
|
hellcreek_port = &hellcreek->ports[port]; |
|
|
|
dev_dbg(hellcreek->dev, "Configure traffic schedule on port %d\n", |
|
port); |
|
|
|
/* First cancel delayed work */ |
|
cancel_delayed_work_sync(&hellcreek_port->schedule_work); |
|
|
|
mutex_lock(&hellcreek->reg_lock); |
|
|
|
if (hellcreek_port->current_schedule) { |
|
taprio_offload_free(hellcreek_port->current_schedule); |
|
hellcreek_port->current_schedule = NULL; |
|
} |
|
hellcreek_port->current_schedule = taprio_offload_get(taprio); |
|
|
|
/* Then select port */ |
|
hellcreek_select_tgd(hellcreek, port); |
|
|
|
/* Enable gating and keep defaults */ |
|
ctrl = (0xff << TR_TGDCTRL_ADMINGATESTATES_SHIFT) | TR_TGDCTRL_GATE_EN; |
|
hellcreek_write(hellcreek, ctrl, TR_TGDCTRL); |
|
|
|
/* Cancel pending schedule */ |
|
hellcreek_write(hellcreek, 0x00, TR_ESTCMD); |
|
|
|
/* Setup a new schedule */ |
|
hellcreek_setup_gcl(hellcreek, port, hellcreek_port->current_schedule); |
|
|
|
/* Configure cycle time */ |
|
hellcreek_set_cycle_time(hellcreek, hellcreek_port->current_schedule); |
|
|
|
/* Check starting time */ |
|
startable = hellcreek_schedule_startable(hellcreek, port); |
|
if (startable) { |
|
hellcreek_start_schedule(hellcreek, port); |
|
mutex_unlock(&hellcreek->reg_lock); |
|
return 0; |
|
} |
|
|
|
mutex_unlock(&hellcreek->reg_lock); |
|
|
|
/* Schedule periodic schedule check */ |
|
schedule_delayed_work(&hellcreek_port->schedule_work, |
|
HELLCREEK_SCHEDULE_PERIOD); |
|
|
|
return 0; |
|
} |
|
|
|
static int hellcreek_port_del_schedule(struct dsa_switch *ds, int port) |
|
{ |
|
struct hellcreek *hellcreek = ds->priv; |
|
struct hellcreek_port *hellcreek_port; |
|
|
|
hellcreek_port = &hellcreek->ports[port]; |
|
|
|
dev_dbg(hellcreek->dev, "Remove traffic schedule on port %d\n", port); |
|
|
|
/* First cancel delayed work */ |
|
cancel_delayed_work_sync(&hellcreek_port->schedule_work); |
|
|
|
mutex_lock(&hellcreek->reg_lock); |
|
|
|
if (hellcreek_port->current_schedule) { |
|
taprio_offload_free(hellcreek_port->current_schedule); |
|
hellcreek_port->current_schedule = NULL; |
|
} |
|
|
|
/* Then select port */ |
|
hellcreek_select_tgd(hellcreek, port); |
|
|
|
/* Disable gating and return to regular switching flow */ |
|
hellcreek_write(hellcreek, 0xff << TR_TGDCTRL_ADMINGATESTATES_SHIFT, |
|
TR_TGDCTRL); |
|
|
|
mutex_unlock(&hellcreek->reg_lock); |
|
|
|
return 0; |
|
} |
|
|
|
static bool hellcreek_validate_schedule(struct hellcreek *hellcreek, |
|
struct tc_taprio_qopt_offload *schedule) |
|
{ |
|
size_t i; |
|
|
|
/* Does this hellcreek version support Qbv in hardware? */ |
|
if (!hellcreek->pdata->qbv_support) |
|
return false; |
|
|
|
/* cycle time can only be 32bit */ |
|
if (schedule->cycle_time > (u32)-1) |
|
return false; |
|
|
|
/* cycle time extension is not supported */ |
|
if (schedule->cycle_time_extension) |
|
return false; |
|
|
|
/* Only set command is supported */ |
|
for (i = 0; i < schedule->num_entries; ++i) |
|
if (schedule->entries[i].command != TC_TAPRIO_CMD_SET_GATES) |
|
return false; |
|
|
|
return true; |
|
} |
|
|
|
static int hellcreek_port_setup_tc(struct dsa_switch *ds, int port, |
|
enum tc_setup_type type, void *type_data) |
|
{ |
|
struct tc_taprio_qopt_offload *taprio = type_data; |
|
struct hellcreek *hellcreek = ds->priv; |
|
|
|
if (type != TC_SETUP_QDISC_TAPRIO) |
|
return -EOPNOTSUPP; |
|
|
|
if (!hellcreek_validate_schedule(hellcreek, taprio)) |
|
return -EOPNOTSUPP; |
|
|
|
if (taprio->enable) |
|
return hellcreek_port_set_schedule(ds, port, taprio); |
|
|
|
return hellcreek_port_del_schedule(ds, port); |
|
} |
|
|
|
static const struct dsa_switch_ops hellcreek_ds_ops = { |
|
.get_ethtool_stats = hellcreek_get_ethtool_stats, |
|
.get_sset_count = hellcreek_get_sset_count, |
|
.get_strings = hellcreek_get_strings, |
|
.get_tag_protocol = hellcreek_get_tag_protocol, |
|
.get_ts_info = hellcreek_get_ts_info, |
|
.phylink_validate = hellcreek_phylink_validate, |
|
.port_bridge_join = hellcreek_port_bridge_join, |
|
.port_bridge_leave = hellcreek_port_bridge_leave, |
|
.port_disable = hellcreek_port_disable, |
|
.port_enable = hellcreek_port_enable, |
|
.port_fdb_add = hellcreek_fdb_add, |
|
.port_fdb_del = hellcreek_fdb_del, |
|
.port_fdb_dump = hellcreek_fdb_dump, |
|
.port_hwtstamp_set = hellcreek_port_hwtstamp_set, |
|
.port_hwtstamp_get = hellcreek_port_hwtstamp_get, |
|
.port_prechangeupper = hellcreek_port_prechangeupper, |
|
.port_rxtstamp = hellcreek_port_rxtstamp, |
|
.port_setup_tc = hellcreek_port_setup_tc, |
|
.port_stp_state_set = hellcreek_port_stp_state_set, |
|
.port_txtstamp = hellcreek_port_txtstamp, |
|
.port_vlan_add = hellcreek_vlan_add, |
|
.port_vlan_del = hellcreek_vlan_del, |
|
.port_vlan_filtering = hellcreek_vlan_filtering, |
|
.setup = hellcreek_setup, |
|
.teardown = hellcreek_teardown, |
|
}; |
|
|
|
static int hellcreek_probe(struct platform_device *pdev) |
|
{ |
|
struct device *dev = &pdev->dev; |
|
struct hellcreek *hellcreek; |
|
struct resource *res; |
|
int ret, i; |
|
|
|
hellcreek = devm_kzalloc(dev, sizeof(*hellcreek), GFP_KERNEL); |
|
if (!hellcreek) |
|
return -ENOMEM; |
|
|
|
hellcreek->vidmbrcfg = devm_kcalloc(dev, VLAN_N_VID, |
|
sizeof(*hellcreek->vidmbrcfg), |
|
GFP_KERNEL); |
|
if (!hellcreek->vidmbrcfg) |
|
return -ENOMEM; |
|
|
|
hellcreek->pdata = of_device_get_match_data(dev); |
|
|
|
hellcreek->ports = devm_kcalloc(dev, hellcreek->pdata->num_ports, |
|
sizeof(*hellcreek->ports), |
|
GFP_KERNEL); |
|
if (!hellcreek->ports) |
|
return -ENOMEM; |
|
|
|
for (i = 0; i < hellcreek->pdata->num_ports; ++i) { |
|
struct hellcreek_port *port = &hellcreek->ports[i]; |
|
|
|
port->counter_values = |
|
devm_kcalloc(dev, |
|
ARRAY_SIZE(hellcreek_counter), |
|
sizeof(*port->counter_values), |
|
GFP_KERNEL); |
|
if (!port->counter_values) |
|
return -ENOMEM; |
|
|
|
port->vlan_dev_bitmap = |
|
devm_kcalloc(dev, |
|
BITS_TO_LONGS(VLAN_N_VID), |
|
sizeof(unsigned long), |
|
GFP_KERNEL); |
|
if (!port->vlan_dev_bitmap) |
|
return -ENOMEM; |
|
|
|
port->hellcreek = hellcreek; |
|
port->port = i; |
|
|
|
INIT_DELAYED_WORK(&port->schedule_work, |
|
hellcreek_check_schedule); |
|
} |
|
|
|
mutex_init(&hellcreek->reg_lock); |
|
mutex_init(&hellcreek->vlan_lock); |
|
mutex_init(&hellcreek->ptp_lock); |
|
|
|
hellcreek->dev = dev; |
|
|
|
res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "tsn"); |
|
if (!res) { |
|
dev_err(dev, "No memory region provided!\n"); |
|
return -ENODEV; |
|
} |
|
|
|
hellcreek->base = devm_ioremap_resource(dev, res); |
|
if (IS_ERR(hellcreek->base)) { |
|
dev_err(dev, "No memory available!\n"); |
|
return PTR_ERR(hellcreek->base); |
|
} |
|
|
|
res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "ptp"); |
|
if (!res) { |
|
dev_err(dev, "No PTP memory region provided!\n"); |
|
return -ENODEV; |
|
} |
|
|
|
hellcreek->ptp_base = devm_ioremap_resource(dev, res); |
|
if (IS_ERR(hellcreek->ptp_base)) { |
|
dev_err(dev, "No memory available!\n"); |
|
return PTR_ERR(hellcreek->ptp_base); |
|
} |
|
|
|
ret = hellcreek_detect(hellcreek); |
|
if (ret) { |
|
dev_err(dev, "No (known) chip found!\n"); |
|
return ret; |
|
} |
|
|
|
ret = hellcreek_wait_until_ready(hellcreek); |
|
if (ret) { |
|
dev_err(dev, "Switch didn't become ready!\n"); |
|
return ret; |
|
} |
|
|
|
hellcreek_feature_detect(hellcreek); |
|
|
|
hellcreek->ds = devm_kzalloc(dev, sizeof(*hellcreek->ds), GFP_KERNEL); |
|
if (!hellcreek->ds) |
|
return -ENOMEM; |
|
|
|
hellcreek->ds->dev = dev; |
|
hellcreek->ds->priv = hellcreek; |
|
hellcreek->ds->ops = &hellcreek_ds_ops; |
|
hellcreek->ds->num_ports = hellcreek->pdata->num_ports; |
|
hellcreek->ds->num_tx_queues = HELLCREEK_NUM_EGRESS_QUEUES; |
|
|
|
ret = dsa_register_switch(hellcreek->ds); |
|
if (ret) { |
|
dev_err_probe(dev, ret, "Unable to register switch\n"); |
|
return ret; |
|
} |
|
|
|
ret = hellcreek_ptp_setup(hellcreek); |
|
if (ret) { |
|
dev_err(dev, "Failed to setup PTP!\n"); |
|
goto err_ptp_setup; |
|
} |
|
|
|
ret = hellcreek_hwtstamp_setup(hellcreek); |
|
if (ret) { |
|
dev_err(dev, "Failed to setup hardware timestamping!\n"); |
|
goto err_tstamp_setup; |
|
} |
|
|
|
platform_set_drvdata(pdev, hellcreek); |
|
|
|
return 0; |
|
|
|
err_tstamp_setup: |
|
hellcreek_ptp_free(hellcreek); |
|
err_ptp_setup: |
|
dsa_unregister_switch(hellcreek->ds); |
|
|
|
return ret; |
|
} |
|
|
|
static int hellcreek_remove(struct platform_device *pdev) |
|
{ |
|
struct hellcreek *hellcreek = platform_get_drvdata(pdev); |
|
|
|
hellcreek_hwtstamp_free(hellcreek); |
|
hellcreek_ptp_free(hellcreek); |
|
dsa_unregister_switch(hellcreek->ds); |
|
platform_set_drvdata(pdev, NULL); |
|
|
|
return 0; |
|
} |
|
|
|
static const struct hellcreek_platform_data de1soc_r1_pdata = { |
|
.num_ports = 4, |
|
.is_100_mbits = 1, |
|
.qbv_support = 1, |
|
.qbv_on_cpu_port = 1, |
|
.qbu_support = 0, |
|
.module_id = 0x4c30, |
|
}; |
|
|
|
static const struct of_device_id hellcreek_of_match[] = { |
|
{ |
|
.compatible = "hirschmann,hellcreek-de1soc-r1", |
|
.data = &de1soc_r1_pdata, |
|
}, |
|
{ /* sentinel */ }, |
|
}; |
|
MODULE_DEVICE_TABLE(of, hellcreek_of_match); |
|
|
|
static struct platform_driver hellcreek_driver = { |
|
.probe = hellcreek_probe, |
|
.remove = hellcreek_remove, |
|
.driver = { |
|
.name = "hellcreek", |
|
.of_match_table = hellcreek_of_match, |
|
}, |
|
}; |
|
module_platform_driver(hellcreek_driver); |
|
|
|
MODULE_AUTHOR("Kurt Kanzenbach <[email protected]>"); |
|
MODULE_DESCRIPTION("Hirschmann Hellcreek driver"); |
|
MODULE_LICENSE("Dual MIT/GPL");
|
|
|