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3215 lines
83 KiB
3215 lines
83 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
|
/* |
|
* drivers/net/ethernet/rocker/rocker.c - Rocker switch device driver |
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* Copyright (c) 2014-2016 Jiri Pirko <[email protected]> |
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* Copyright (c) 2014 Scott Feldman <[email protected]> |
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*/ |
|
|
|
#include <linux/kernel.h> |
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#include <linux/module.h> |
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#include <linux/pci.h> |
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#include <linux/interrupt.h> |
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#include <linux/sched.h> |
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#include <linux/wait.h> |
|
#include <linux/spinlock.h> |
|
#include <linux/sort.h> |
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#include <linux/random.h> |
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#include <linux/netdevice.h> |
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#include <linux/skbuff.h> |
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#include <linux/socket.h> |
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#include <linux/etherdevice.h> |
|
#include <linux/ethtool.h> |
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#include <linux/if_ether.h> |
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#include <linux/if_vlan.h> |
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#include <linux/if_bridge.h> |
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#include <linux/bitops.h> |
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#include <linux/ctype.h> |
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#include <linux/workqueue.h> |
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#include <net/switchdev.h> |
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#include <net/rtnetlink.h> |
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#include <net/netevent.h> |
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#include <net/arp.h> |
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#include <net/fib_rules.h> |
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#include <net/fib_notifier.h> |
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#include <linux/io-64-nonatomic-lo-hi.h> |
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#include <generated/utsrelease.h> |
|
|
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#include "rocker_hw.h" |
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#include "rocker.h" |
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#include "rocker_tlv.h" |
|
|
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static const char rocker_driver_name[] = "rocker"; |
|
|
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static const struct pci_device_id rocker_pci_id_table[] = { |
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{PCI_VDEVICE(REDHAT, PCI_DEVICE_ID_REDHAT_ROCKER), 0}, |
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{0, } |
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}; |
|
|
|
struct rocker_wait { |
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wait_queue_head_t wait; |
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bool done; |
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bool nowait; |
|
}; |
|
|
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static void rocker_wait_reset(struct rocker_wait *wait) |
|
{ |
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wait->done = false; |
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wait->nowait = false; |
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} |
|
|
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static void rocker_wait_init(struct rocker_wait *wait) |
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{ |
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init_waitqueue_head(&wait->wait); |
|
rocker_wait_reset(wait); |
|
} |
|
|
|
static struct rocker_wait *rocker_wait_create(void) |
|
{ |
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struct rocker_wait *wait; |
|
|
|
wait = kzalloc(sizeof(*wait), GFP_KERNEL); |
|
if (!wait) |
|
return NULL; |
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return wait; |
|
} |
|
|
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static void rocker_wait_destroy(struct rocker_wait *wait) |
|
{ |
|
kfree(wait); |
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} |
|
|
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static bool rocker_wait_event_timeout(struct rocker_wait *wait, |
|
unsigned long timeout) |
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{ |
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wait_event_timeout(wait->wait, wait->done, HZ / 10); |
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if (!wait->done) |
|
return false; |
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return true; |
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} |
|
|
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static void rocker_wait_wake_up(struct rocker_wait *wait) |
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{ |
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wait->done = true; |
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wake_up(&wait->wait); |
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} |
|
|
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static u32 rocker_msix_vector(const struct rocker *rocker, unsigned int vector) |
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{ |
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return rocker->msix_entries[vector].vector; |
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} |
|
|
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static u32 rocker_msix_tx_vector(const struct rocker_port *rocker_port) |
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{ |
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return rocker_msix_vector(rocker_port->rocker, |
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ROCKER_MSIX_VEC_TX(rocker_port->port_number)); |
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} |
|
|
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static u32 rocker_msix_rx_vector(const struct rocker_port *rocker_port) |
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{ |
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return rocker_msix_vector(rocker_port->rocker, |
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ROCKER_MSIX_VEC_RX(rocker_port->port_number)); |
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} |
|
|
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#define rocker_write32(rocker, reg, val) \ |
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writel((val), (rocker)->hw_addr + (ROCKER_ ## reg)) |
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#define rocker_read32(rocker, reg) \ |
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readl((rocker)->hw_addr + (ROCKER_ ## reg)) |
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#define rocker_write64(rocker, reg, val) \ |
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writeq((val), (rocker)->hw_addr + (ROCKER_ ## reg)) |
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#define rocker_read64(rocker, reg) \ |
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readq((rocker)->hw_addr + (ROCKER_ ## reg)) |
|
|
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/***************************** |
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* HW basic testing functions |
|
*****************************/ |
|
|
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static int rocker_reg_test(const struct rocker *rocker) |
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{ |
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const struct pci_dev *pdev = rocker->pdev; |
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u64 test_reg; |
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u64 rnd; |
|
|
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rnd = prandom_u32(); |
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rnd >>= 1; |
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rocker_write32(rocker, TEST_REG, rnd); |
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test_reg = rocker_read32(rocker, TEST_REG); |
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if (test_reg != rnd * 2) { |
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dev_err(&pdev->dev, "unexpected 32bit register value %08llx, expected %08llx\n", |
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test_reg, rnd * 2); |
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return -EIO; |
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} |
|
|
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rnd = prandom_u32(); |
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rnd <<= 31; |
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rnd |= prandom_u32(); |
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rocker_write64(rocker, TEST_REG64, rnd); |
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test_reg = rocker_read64(rocker, TEST_REG64); |
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if (test_reg != rnd * 2) { |
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dev_err(&pdev->dev, "unexpected 64bit register value %16llx, expected %16llx\n", |
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test_reg, rnd * 2); |
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return -EIO; |
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} |
|
|
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return 0; |
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} |
|
|
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static int rocker_dma_test_one(const struct rocker *rocker, |
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struct rocker_wait *wait, u32 test_type, |
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dma_addr_t dma_handle, const unsigned char *buf, |
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const unsigned char *expect, size_t size) |
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{ |
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const struct pci_dev *pdev = rocker->pdev; |
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int i; |
|
|
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rocker_wait_reset(wait); |
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rocker_write32(rocker, TEST_DMA_CTRL, test_type); |
|
|
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if (!rocker_wait_event_timeout(wait, HZ / 10)) { |
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dev_err(&pdev->dev, "no interrupt received within a timeout\n"); |
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return -EIO; |
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} |
|
|
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for (i = 0; i < size; i++) { |
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if (buf[i] != expect[i]) { |
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dev_err(&pdev->dev, "unexpected memory content %02x at byte %x\n, %02x expected", |
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buf[i], i, expect[i]); |
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return -EIO; |
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} |
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} |
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return 0; |
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} |
|
|
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#define ROCKER_TEST_DMA_BUF_SIZE (PAGE_SIZE * 4) |
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#define ROCKER_TEST_DMA_FILL_PATTERN 0x96 |
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|
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static int rocker_dma_test_offset(const struct rocker *rocker, |
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struct rocker_wait *wait, int offset) |
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{ |
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struct pci_dev *pdev = rocker->pdev; |
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unsigned char *alloc; |
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unsigned char *buf; |
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unsigned char *expect; |
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dma_addr_t dma_handle; |
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int i; |
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int err; |
|
|
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alloc = kzalloc(ROCKER_TEST_DMA_BUF_SIZE * 2 + offset, |
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GFP_KERNEL | GFP_DMA); |
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if (!alloc) |
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return -ENOMEM; |
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buf = alloc + offset; |
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expect = buf + ROCKER_TEST_DMA_BUF_SIZE; |
|
|
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dma_handle = dma_map_single(&pdev->dev, buf, ROCKER_TEST_DMA_BUF_SIZE, |
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DMA_BIDIRECTIONAL); |
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if (dma_mapping_error(&pdev->dev, dma_handle)) { |
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err = -EIO; |
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goto free_alloc; |
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} |
|
|
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rocker_write64(rocker, TEST_DMA_ADDR, dma_handle); |
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rocker_write32(rocker, TEST_DMA_SIZE, ROCKER_TEST_DMA_BUF_SIZE); |
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|
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memset(expect, ROCKER_TEST_DMA_FILL_PATTERN, ROCKER_TEST_DMA_BUF_SIZE); |
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err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_FILL, |
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dma_handle, buf, expect, |
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ROCKER_TEST_DMA_BUF_SIZE); |
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if (err) |
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goto unmap; |
|
|
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memset(expect, 0, ROCKER_TEST_DMA_BUF_SIZE); |
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err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_CLEAR, |
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dma_handle, buf, expect, |
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ROCKER_TEST_DMA_BUF_SIZE); |
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if (err) |
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goto unmap; |
|
|
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prandom_bytes(buf, ROCKER_TEST_DMA_BUF_SIZE); |
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for (i = 0; i < ROCKER_TEST_DMA_BUF_SIZE; i++) |
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expect[i] = ~buf[i]; |
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err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_INVERT, |
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dma_handle, buf, expect, |
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ROCKER_TEST_DMA_BUF_SIZE); |
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if (err) |
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goto unmap; |
|
|
|
unmap: |
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dma_unmap_single(&pdev->dev, dma_handle, ROCKER_TEST_DMA_BUF_SIZE, |
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DMA_BIDIRECTIONAL); |
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free_alloc: |
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kfree(alloc); |
|
|
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return err; |
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} |
|
|
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static int rocker_dma_test(const struct rocker *rocker, |
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struct rocker_wait *wait) |
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{ |
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int i; |
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int err; |
|
|
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for (i = 0; i < 8; i++) { |
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err = rocker_dma_test_offset(rocker, wait, i); |
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if (err) |
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return err; |
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} |
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return 0; |
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} |
|
|
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static irqreturn_t rocker_test_irq_handler(int irq, void *dev_id) |
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{ |
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struct rocker_wait *wait = dev_id; |
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|
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rocker_wait_wake_up(wait); |
|
|
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return IRQ_HANDLED; |
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} |
|
|
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static int rocker_basic_hw_test(const struct rocker *rocker) |
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{ |
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const struct pci_dev *pdev = rocker->pdev; |
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struct rocker_wait wait; |
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int err; |
|
|
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err = rocker_reg_test(rocker); |
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if (err) { |
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dev_err(&pdev->dev, "reg test failed\n"); |
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return err; |
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} |
|
|
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err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_TEST), |
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rocker_test_irq_handler, 0, |
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rocker_driver_name, &wait); |
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if (err) { |
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dev_err(&pdev->dev, "cannot assign test irq\n"); |
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return err; |
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} |
|
|
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rocker_wait_init(&wait); |
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rocker_write32(rocker, TEST_IRQ, ROCKER_MSIX_VEC_TEST); |
|
|
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if (!rocker_wait_event_timeout(&wait, HZ / 10)) { |
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dev_err(&pdev->dev, "no interrupt received within a timeout\n"); |
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err = -EIO; |
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goto free_irq; |
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} |
|
|
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err = rocker_dma_test(rocker, &wait); |
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if (err) |
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dev_err(&pdev->dev, "dma test failed\n"); |
|
|
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free_irq: |
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free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_TEST), &wait); |
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return err; |
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} |
|
|
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/****************************************** |
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* DMA rings and descriptors manipulations |
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******************************************/ |
|
|
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static u32 __pos_inc(u32 pos, size_t limit) |
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{ |
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return ++pos == limit ? 0 : pos; |
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} |
|
|
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static int rocker_desc_err(const struct rocker_desc_info *desc_info) |
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{ |
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int err = desc_info->desc->comp_err & ~ROCKER_DMA_DESC_COMP_ERR_GEN; |
|
|
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switch (err) { |
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case ROCKER_OK: |
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return 0; |
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case -ROCKER_ENOENT: |
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return -ENOENT; |
|
case -ROCKER_ENXIO: |
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return -ENXIO; |
|
case -ROCKER_ENOMEM: |
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return -ENOMEM; |
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case -ROCKER_EEXIST: |
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return -EEXIST; |
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case -ROCKER_EINVAL: |
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return -EINVAL; |
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case -ROCKER_EMSGSIZE: |
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return -EMSGSIZE; |
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case -ROCKER_ENOTSUP: |
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return -EOPNOTSUPP; |
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case -ROCKER_ENOBUFS: |
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return -ENOBUFS; |
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} |
|
|
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return -EINVAL; |
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} |
|
|
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static void rocker_desc_gen_clear(const struct rocker_desc_info *desc_info) |
|
{ |
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desc_info->desc->comp_err &= ~ROCKER_DMA_DESC_COMP_ERR_GEN; |
|
} |
|
|
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static bool rocker_desc_gen(const struct rocker_desc_info *desc_info) |
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{ |
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u32 comp_err = desc_info->desc->comp_err; |
|
|
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return comp_err & ROCKER_DMA_DESC_COMP_ERR_GEN ? true : false; |
|
} |
|
|
|
static void * |
|
rocker_desc_cookie_ptr_get(const struct rocker_desc_info *desc_info) |
|
{ |
|
return (void *)(uintptr_t)desc_info->desc->cookie; |
|
} |
|
|
|
static void rocker_desc_cookie_ptr_set(const struct rocker_desc_info *desc_info, |
|
void *ptr) |
|
{ |
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desc_info->desc->cookie = (uintptr_t) ptr; |
|
} |
|
|
|
static struct rocker_desc_info * |
|
rocker_desc_head_get(const struct rocker_dma_ring_info *info) |
|
{ |
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struct rocker_desc_info *desc_info; |
|
u32 head = __pos_inc(info->head, info->size); |
|
|
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desc_info = &info->desc_info[info->head]; |
|
if (head == info->tail) |
|
return NULL; /* ring full */ |
|
desc_info->tlv_size = 0; |
|
return desc_info; |
|
} |
|
|
|
static void rocker_desc_commit(const struct rocker_desc_info *desc_info) |
|
{ |
|
desc_info->desc->buf_size = desc_info->data_size; |
|
desc_info->desc->tlv_size = desc_info->tlv_size; |
|
} |
|
|
|
static void rocker_desc_head_set(const struct rocker *rocker, |
|
struct rocker_dma_ring_info *info, |
|
const struct rocker_desc_info *desc_info) |
|
{ |
|
u32 head = __pos_inc(info->head, info->size); |
|
|
|
BUG_ON(head == info->tail); |
|
rocker_desc_commit(desc_info); |
|
info->head = head; |
|
rocker_write32(rocker, DMA_DESC_HEAD(info->type), head); |
|
} |
|
|
|
static struct rocker_desc_info * |
|
rocker_desc_tail_get(struct rocker_dma_ring_info *info) |
|
{ |
|
struct rocker_desc_info *desc_info; |
|
|
|
if (info->tail == info->head) |
|
return NULL; /* nothing to be done between head and tail */ |
|
desc_info = &info->desc_info[info->tail]; |
|
if (!rocker_desc_gen(desc_info)) |
|
return NULL; /* gen bit not set, desc is not ready yet */ |
|
info->tail = __pos_inc(info->tail, info->size); |
|
desc_info->tlv_size = desc_info->desc->tlv_size; |
|
return desc_info; |
|
} |
|
|
|
static void rocker_dma_ring_credits_set(const struct rocker *rocker, |
|
const struct rocker_dma_ring_info *info, |
|
u32 credits) |
|
{ |
|
if (credits) |
|
rocker_write32(rocker, DMA_DESC_CREDITS(info->type), credits); |
|
} |
|
|
|
static unsigned long rocker_dma_ring_size_fix(size_t size) |
|
{ |
|
return max(ROCKER_DMA_SIZE_MIN, |
|
min(roundup_pow_of_two(size), ROCKER_DMA_SIZE_MAX)); |
|
} |
|
|
|
static int rocker_dma_ring_create(const struct rocker *rocker, |
|
unsigned int type, |
|
size_t size, |
|
struct rocker_dma_ring_info *info) |
|
{ |
|
int i; |
|
|
|
BUG_ON(size != rocker_dma_ring_size_fix(size)); |
|
info->size = size; |
|
info->type = type; |
|
info->head = 0; |
|
info->tail = 0; |
|
info->desc_info = kcalloc(info->size, sizeof(*info->desc_info), |
|
GFP_KERNEL); |
|
if (!info->desc_info) |
|
return -ENOMEM; |
|
|
|
info->desc = dma_alloc_coherent(&rocker->pdev->dev, |
|
info->size * sizeof(*info->desc), |
|
&info->mapaddr, GFP_KERNEL); |
|
if (!info->desc) { |
|
kfree(info->desc_info); |
|
return -ENOMEM; |
|
} |
|
|
|
for (i = 0; i < info->size; i++) |
|
info->desc_info[i].desc = &info->desc[i]; |
|
|
|
rocker_write32(rocker, DMA_DESC_CTRL(info->type), |
|
ROCKER_DMA_DESC_CTRL_RESET); |
|
rocker_write64(rocker, DMA_DESC_ADDR(info->type), info->mapaddr); |
|
rocker_write32(rocker, DMA_DESC_SIZE(info->type), info->size); |
|
|
|
return 0; |
|
} |
|
|
|
static void rocker_dma_ring_destroy(const struct rocker *rocker, |
|
const struct rocker_dma_ring_info *info) |
|
{ |
|
rocker_write64(rocker, DMA_DESC_ADDR(info->type), 0); |
|
|
|
dma_free_coherent(&rocker->pdev->dev, |
|
info->size * sizeof(struct rocker_desc), info->desc, |
|
info->mapaddr); |
|
kfree(info->desc_info); |
|
} |
|
|
|
static void rocker_dma_ring_pass_to_producer(const struct rocker *rocker, |
|
struct rocker_dma_ring_info *info) |
|
{ |
|
int i; |
|
|
|
BUG_ON(info->head || info->tail); |
|
|
|
/* When ring is consumer, we need to advance head for each desc. |
|
* That tells hw that the desc is ready to be used by it. |
|
*/ |
|
for (i = 0; i < info->size - 1; i++) |
|
rocker_desc_head_set(rocker, info, &info->desc_info[i]); |
|
rocker_desc_commit(&info->desc_info[i]); |
|
} |
|
|
|
static int rocker_dma_ring_bufs_alloc(const struct rocker *rocker, |
|
const struct rocker_dma_ring_info *info, |
|
int direction, size_t buf_size) |
|
{ |
|
struct pci_dev *pdev = rocker->pdev; |
|
int i; |
|
int err; |
|
|
|
for (i = 0; i < info->size; i++) { |
|
struct rocker_desc_info *desc_info = &info->desc_info[i]; |
|
struct rocker_desc *desc = &info->desc[i]; |
|
dma_addr_t dma_handle; |
|
char *buf; |
|
|
|
buf = kzalloc(buf_size, GFP_KERNEL | GFP_DMA); |
|
if (!buf) { |
|
err = -ENOMEM; |
|
goto rollback; |
|
} |
|
|
|
dma_handle = dma_map_single(&pdev->dev, buf, buf_size, |
|
direction); |
|
if (dma_mapping_error(&pdev->dev, dma_handle)) { |
|
kfree(buf); |
|
err = -EIO; |
|
goto rollback; |
|
} |
|
|
|
desc_info->data = buf; |
|
desc_info->data_size = buf_size; |
|
dma_unmap_addr_set(desc_info, mapaddr, dma_handle); |
|
|
|
desc->buf_addr = dma_handle; |
|
desc->buf_size = buf_size; |
|
} |
|
return 0; |
|
|
|
rollback: |
|
for (i--; i >= 0; i--) { |
|
const struct rocker_desc_info *desc_info = &info->desc_info[i]; |
|
|
|
dma_unmap_single(&pdev->dev, |
|
dma_unmap_addr(desc_info, mapaddr), |
|
desc_info->data_size, direction); |
|
kfree(desc_info->data); |
|
} |
|
return err; |
|
} |
|
|
|
static void rocker_dma_ring_bufs_free(const struct rocker *rocker, |
|
const struct rocker_dma_ring_info *info, |
|
int direction) |
|
{ |
|
struct pci_dev *pdev = rocker->pdev; |
|
int i; |
|
|
|
for (i = 0; i < info->size; i++) { |
|
const struct rocker_desc_info *desc_info = &info->desc_info[i]; |
|
struct rocker_desc *desc = &info->desc[i]; |
|
|
|
desc->buf_addr = 0; |
|
desc->buf_size = 0; |
|
dma_unmap_single(&pdev->dev, |
|
dma_unmap_addr(desc_info, mapaddr), |
|
desc_info->data_size, direction); |
|
kfree(desc_info->data); |
|
} |
|
} |
|
|
|
static int rocker_dma_cmd_ring_wait_alloc(struct rocker_desc_info *desc_info) |
|
{ |
|
struct rocker_wait *wait; |
|
|
|
wait = rocker_wait_create(); |
|
if (!wait) |
|
return -ENOMEM; |
|
rocker_desc_cookie_ptr_set(desc_info, wait); |
|
return 0; |
|
} |
|
|
|
static void |
|
rocker_dma_cmd_ring_wait_free(const struct rocker_desc_info *desc_info) |
|
{ |
|
struct rocker_wait *wait = rocker_desc_cookie_ptr_get(desc_info); |
|
|
|
rocker_wait_destroy(wait); |
|
} |
|
|
|
static int rocker_dma_cmd_ring_waits_alloc(const struct rocker *rocker) |
|
{ |
|
const struct rocker_dma_ring_info *cmd_ring = &rocker->cmd_ring; |
|
int i; |
|
int err; |
|
|
|
for (i = 0; i < cmd_ring->size; i++) { |
|
err = rocker_dma_cmd_ring_wait_alloc(&cmd_ring->desc_info[i]); |
|
if (err) |
|
goto rollback; |
|
} |
|
return 0; |
|
|
|
rollback: |
|
for (i--; i >= 0; i--) |
|
rocker_dma_cmd_ring_wait_free(&cmd_ring->desc_info[i]); |
|
return err; |
|
} |
|
|
|
static void rocker_dma_cmd_ring_waits_free(const struct rocker *rocker) |
|
{ |
|
const struct rocker_dma_ring_info *cmd_ring = &rocker->cmd_ring; |
|
int i; |
|
|
|
for (i = 0; i < cmd_ring->size; i++) |
|
rocker_dma_cmd_ring_wait_free(&cmd_ring->desc_info[i]); |
|
} |
|
|
|
static int rocker_dma_rings_init(struct rocker *rocker) |
|
{ |
|
const struct pci_dev *pdev = rocker->pdev; |
|
int err; |
|
|
|
err = rocker_dma_ring_create(rocker, ROCKER_DMA_CMD, |
|
ROCKER_DMA_CMD_DEFAULT_SIZE, |
|
&rocker->cmd_ring); |
|
if (err) { |
|
dev_err(&pdev->dev, "failed to create command dma ring\n"); |
|
return err; |
|
} |
|
|
|
spin_lock_init(&rocker->cmd_ring_lock); |
|
|
|
err = rocker_dma_ring_bufs_alloc(rocker, &rocker->cmd_ring, |
|
DMA_BIDIRECTIONAL, PAGE_SIZE); |
|
if (err) { |
|
dev_err(&pdev->dev, "failed to alloc command dma ring buffers\n"); |
|
goto err_dma_cmd_ring_bufs_alloc; |
|
} |
|
|
|
err = rocker_dma_cmd_ring_waits_alloc(rocker); |
|
if (err) { |
|
dev_err(&pdev->dev, "failed to alloc command dma ring waits\n"); |
|
goto err_dma_cmd_ring_waits_alloc; |
|
} |
|
|
|
err = rocker_dma_ring_create(rocker, ROCKER_DMA_EVENT, |
|
ROCKER_DMA_EVENT_DEFAULT_SIZE, |
|
&rocker->event_ring); |
|
if (err) { |
|
dev_err(&pdev->dev, "failed to create event dma ring\n"); |
|
goto err_dma_event_ring_create; |
|
} |
|
|
|
err = rocker_dma_ring_bufs_alloc(rocker, &rocker->event_ring, |
|
DMA_FROM_DEVICE, PAGE_SIZE); |
|
if (err) { |
|
dev_err(&pdev->dev, "failed to alloc event dma ring buffers\n"); |
|
goto err_dma_event_ring_bufs_alloc; |
|
} |
|
rocker_dma_ring_pass_to_producer(rocker, &rocker->event_ring); |
|
return 0; |
|
|
|
err_dma_event_ring_bufs_alloc: |
|
rocker_dma_ring_destroy(rocker, &rocker->event_ring); |
|
err_dma_event_ring_create: |
|
rocker_dma_cmd_ring_waits_free(rocker); |
|
err_dma_cmd_ring_waits_alloc: |
|
rocker_dma_ring_bufs_free(rocker, &rocker->cmd_ring, |
|
DMA_BIDIRECTIONAL); |
|
err_dma_cmd_ring_bufs_alloc: |
|
rocker_dma_ring_destroy(rocker, &rocker->cmd_ring); |
|
return err; |
|
} |
|
|
|
static void rocker_dma_rings_fini(struct rocker *rocker) |
|
{ |
|
rocker_dma_ring_bufs_free(rocker, &rocker->event_ring, |
|
DMA_BIDIRECTIONAL); |
|
rocker_dma_ring_destroy(rocker, &rocker->event_ring); |
|
rocker_dma_cmd_ring_waits_free(rocker); |
|
rocker_dma_ring_bufs_free(rocker, &rocker->cmd_ring, |
|
DMA_BIDIRECTIONAL); |
|
rocker_dma_ring_destroy(rocker, &rocker->cmd_ring); |
|
} |
|
|
|
static int rocker_dma_rx_ring_skb_map(const struct rocker_port *rocker_port, |
|
struct rocker_desc_info *desc_info, |
|
struct sk_buff *skb, size_t buf_len) |
|
{ |
|
const struct rocker *rocker = rocker_port->rocker; |
|
struct pci_dev *pdev = rocker->pdev; |
|
dma_addr_t dma_handle; |
|
|
|
dma_handle = dma_map_single(&pdev->dev, skb->data, buf_len, |
|
DMA_FROM_DEVICE); |
|
if (dma_mapping_error(&pdev->dev, dma_handle)) |
|
return -EIO; |
|
if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_RX_FRAG_ADDR, dma_handle)) |
|
goto tlv_put_failure; |
|
if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_RX_FRAG_MAX_LEN, buf_len)) |
|
goto tlv_put_failure; |
|
return 0; |
|
|
|
tlv_put_failure: |
|
dma_unmap_single(&pdev->dev, dma_handle, buf_len, DMA_FROM_DEVICE); |
|
desc_info->tlv_size = 0; |
|
return -EMSGSIZE; |
|
} |
|
|
|
static size_t rocker_port_rx_buf_len(const struct rocker_port *rocker_port) |
|
{ |
|
return rocker_port->dev->mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN; |
|
} |
|
|
|
static int rocker_dma_rx_ring_skb_alloc(const struct rocker_port *rocker_port, |
|
struct rocker_desc_info *desc_info) |
|
{ |
|
struct net_device *dev = rocker_port->dev; |
|
struct sk_buff *skb; |
|
size_t buf_len = rocker_port_rx_buf_len(rocker_port); |
|
int err; |
|
|
|
/* Ensure that hw will see tlv_size zero in case of an error. |
|
* That tells hw to use another descriptor. |
|
*/ |
|
rocker_desc_cookie_ptr_set(desc_info, NULL); |
|
desc_info->tlv_size = 0; |
|
|
|
skb = netdev_alloc_skb_ip_align(dev, buf_len); |
|
if (!skb) |
|
return -ENOMEM; |
|
err = rocker_dma_rx_ring_skb_map(rocker_port, desc_info, skb, buf_len); |
|
if (err) { |
|
dev_kfree_skb_any(skb); |
|
return err; |
|
} |
|
rocker_desc_cookie_ptr_set(desc_info, skb); |
|
return 0; |
|
} |
|
|
|
static void rocker_dma_rx_ring_skb_unmap(const struct rocker *rocker, |
|
const struct rocker_tlv **attrs) |
|
{ |
|
struct pci_dev *pdev = rocker->pdev; |
|
dma_addr_t dma_handle; |
|
size_t len; |
|
|
|
if (!attrs[ROCKER_TLV_RX_FRAG_ADDR] || |
|
!attrs[ROCKER_TLV_RX_FRAG_MAX_LEN]) |
|
return; |
|
dma_handle = rocker_tlv_get_u64(attrs[ROCKER_TLV_RX_FRAG_ADDR]); |
|
len = rocker_tlv_get_u16(attrs[ROCKER_TLV_RX_FRAG_MAX_LEN]); |
|
dma_unmap_single(&pdev->dev, dma_handle, len, DMA_FROM_DEVICE); |
|
} |
|
|
|
static void rocker_dma_rx_ring_skb_free(const struct rocker *rocker, |
|
const struct rocker_desc_info *desc_info) |
|
{ |
|
const struct rocker_tlv *attrs[ROCKER_TLV_RX_MAX + 1]; |
|
struct sk_buff *skb = rocker_desc_cookie_ptr_get(desc_info); |
|
|
|
if (!skb) |
|
return; |
|
rocker_tlv_parse_desc(attrs, ROCKER_TLV_RX_MAX, desc_info); |
|
rocker_dma_rx_ring_skb_unmap(rocker, attrs); |
|
dev_kfree_skb_any(skb); |
|
} |
|
|
|
static int rocker_dma_rx_ring_skbs_alloc(const struct rocker_port *rocker_port) |
|
{ |
|
const struct rocker_dma_ring_info *rx_ring = &rocker_port->rx_ring; |
|
const struct rocker *rocker = rocker_port->rocker; |
|
int i; |
|
int err; |
|
|
|
for (i = 0; i < rx_ring->size; i++) { |
|
err = rocker_dma_rx_ring_skb_alloc(rocker_port, |
|
&rx_ring->desc_info[i]); |
|
if (err) |
|
goto rollback; |
|
} |
|
return 0; |
|
|
|
rollback: |
|
for (i--; i >= 0; i--) |
|
rocker_dma_rx_ring_skb_free(rocker, &rx_ring->desc_info[i]); |
|
return err; |
|
} |
|
|
|
static void rocker_dma_rx_ring_skbs_free(const struct rocker_port *rocker_port) |
|
{ |
|
const struct rocker_dma_ring_info *rx_ring = &rocker_port->rx_ring; |
|
const struct rocker *rocker = rocker_port->rocker; |
|
int i; |
|
|
|
for (i = 0; i < rx_ring->size; i++) |
|
rocker_dma_rx_ring_skb_free(rocker, &rx_ring->desc_info[i]); |
|
} |
|
|
|
static int rocker_port_dma_rings_init(struct rocker_port *rocker_port) |
|
{ |
|
struct rocker *rocker = rocker_port->rocker; |
|
int err; |
|
|
|
err = rocker_dma_ring_create(rocker, |
|
ROCKER_DMA_TX(rocker_port->port_number), |
|
ROCKER_DMA_TX_DEFAULT_SIZE, |
|
&rocker_port->tx_ring); |
|
if (err) { |
|
netdev_err(rocker_port->dev, "failed to create tx dma ring\n"); |
|
return err; |
|
} |
|
|
|
err = rocker_dma_ring_bufs_alloc(rocker, &rocker_port->tx_ring, |
|
DMA_TO_DEVICE, |
|
ROCKER_DMA_TX_DESC_SIZE); |
|
if (err) { |
|
netdev_err(rocker_port->dev, "failed to alloc tx dma ring buffers\n"); |
|
goto err_dma_tx_ring_bufs_alloc; |
|
} |
|
|
|
err = rocker_dma_ring_create(rocker, |
|
ROCKER_DMA_RX(rocker_port->port_number), |
|
ROCKER_DMA_RX_DEFAULT_SIZE, |
|
&rocker_port->rx_ring); |
|
if (err) { |
|
netdev_err(rocker_port->dev, "failed to create rx dma ring\n"); |
|
goto err_dma_rx_ring_create; |
|
} |
|
|
|
err = rocker_dma_ring_bufs_alloc(rocker, &rocker_port->rx_ring, |
|
DMA_BIDIRECTIONAL, |
|
ROCKER_DMA_RX_DESC_SIZE); |
|
if (err) { |
|
netdev_err(rocker_port->dev, "failed to alloc rx dma ring buffers\n"); |
|
goto err_dma_rx_ring_bufs_alloc; |
|
} |
|
|
|
err = rocker_dma_rx_ring_skbs_alloc(rocker_port); |
|
if (err) { |
|
netdev_err(rocker_port->dev, "failed to alloc rx dma ring skbs\n"); |
|
goto err_dma_rx_ring_skbs_alloc; |
|
} |
|
rocker_dma_ring_pass_to_producer(rocker, &rocker_port->rx_ring); |
|
|
|
return 0; |
|
|
|
err_dma_rx_ring_skbs_alloc: |
|
rocker_dma_ring_bufs_free(rocker, &rocker_port->rx_ring, |
|
DMA_BIDIRECTIONAL); |
|
err_dma_rx_ring_bufs_alloc: |
|
rocker_dma_ring_destroy(rocker, &rocker_port->rx_ring); |
|
err_dma_rx_ring_create: |
|
rocker_dma_ring_bufs_free(rocker, &rocker_port->tx_ring, |
|
DMA_TO_DEVICE); |
|
err_dma_tx_ring_bufs_alloc: |
|
rocker_dma_ring_destroy(rocker, &rocker_port->tx_ring); |
|
return err; |
|
} |
|
|
|
static void rocker_port_dma_rings_fini(struct rocker_port *rocker_port) |
|
{ |
|
struct rocker *rocker = rocker_port->rocker; |
|
|
|
rocker_dma_rx_ring_skbs_free(rocker_port); |
|
rocker_dma_ring_bufs_free(rocker, &rocker_port->rx_ring, |
|
DMA_BIDIRECTIONAL); |
|
rocker_dma_ring_destroy(rocker, &rocker_port->rx_ring); |
|
rocker_dma_ring_bufs_free(rocker, &rocker_port->tx_ring, |
|
DMA_TO_DEVICE); |
|
rocker_dma_ring_destroy(rocker, &rocker_port->tx_ring); |
|
} |
|
|
|
static void rocker_port_set_enable(const struct rocker_port *rocker_port, |
|
bool enable) |
|
{ |
|
u64 val = rocker_read64(rocker_port->rocker, PORT_PHYS_ENABLE); |
|
|
|
if (enable) |
|
val |= 1ULL << rocker_port->pport; |
|
else |
|
val &= ~(1ULL << rocker_port->pport); |
|
rocker_write64(rocker_port->rocker, PORT_PHYS_ENABLE, val); |
|
} |
|
|
|
/******************************** |
|
* Interrupt handler and helpers |
|
********************************/ |
|
|
|
static irqreturn_t rocker_cmd_irq_handler(int irq, void *dev_id) |
|
{ |
|
struct rocker *rocker = dev_id; |
|
const struct rocker_desc_info *desc_info; |
|
struct rocker_wait *wait; |
|
u32 credits = 0; |
|
|
|
spin_lock(&rocker->cmd_ring_lock); |
|
while ((desc_info = rocker_desc_tail_get(&rocker->cmd_ring))) { |
|
wait = rocker_desc_cookie_ptr_get(desc_info); |
|
if (wait->nowait) { |
|
rocker_desc_gen_clear(desc_info); |
|
} else { |
|
rocker_wait_wake_up(wait); |
|
} |
|
credits++; |
|
} |
|
spin_unlock(&rocker->cmd_ring_lock); |
|
rocker_dma_ring_credits_set(rocker, &rocker->cmd_ring, credits); |
|
|
|
return IRQ_HANDLED; |
|
} |
|
|
|
static void rocker_port_link_up(const struct rocker_port *rocker_port) |
|
{ |
|
netif_carrier_on(rocker_port->dev); |
|
netdev_info(rocker_port->dev, "Link is up\n"); |
|
} |
|
|
|
static void rocker_port_link_down(const struct rocker_port *rocker_port) |
|
{ |
|
netif_carrier_off(rocker_port->dev); |
|
netdev_info(rocker_port->dev, "Link is down\n"); |
|
} |
|
|
|
static int rocker_event_link_change(const struct rocker *rocker, |
|
const struct rocker_tlv *info) |
|
{ |
|
const struct rocker_tlv *attrs[ROCKER_TLV_EVENT_LINK_CHANGED_MAX + 1]; |
|
unsigned int port_number; |
|
bool link_up; |
|
struct rocker_port *rocker_port; |
|
|
|
rocker_tlv_parse_nested(attrs, ROCKER_TLV_EVENT_LINK_CHANGED_MAX, info); |
|
if (!attrs[ROCKER_TLV_EVENT_LINK_CHANGED_PPORT] || |
|
!attrs[ROCKER_TLV_EVENT_LINK_CHANGED_LINKUP]) |
|
return -EIO; |
|
port_number = |
|
rocker_tlv_get_u32(attrs[ROCKER_TLV_EVENT_LINK_CHANGED_PPORT]) - 1; |
|
link_up = rocker_tlv_get_u8(attrs[ROCKER_TLV_EVENT_LINK_CHANGED_LINKUP]); |
|
|
|
if (port_number >= rocker->port_count) |
|
return -EINVAL; |
|
|
|
rocker_port = rocker->ports[port_number]; |
|
if (netif_carrier_ok(rocker_port->dev) != link_up) { |
|
if (link_up) |
|
rocker_port_link_up(rocker_port); |
|
else |
|
rocker_port_link_down(rocker_port); |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static int rocker_world_port_ev_mac_vlan_seen(struct rocker_port *rocker_port, |
|
const unsigned char *addr, |
|
__be16 vlan_id); |
|
|
|
static int rocker_event_mac_vlan_seen(const struct rocker *rocker, |
|
const struct rocker_tlv *info) |
|
{ |
|
const struct rocker_tlv *attrs[ROCKER_TLV_EVENT_MAC_VLAN_MAX + 1]; |
|
unsigned int port_number; |
|
struct rocker_port *rocker_port; |
|
const unsigned char *addr; |
|
__be16 vlan_id; |
|
|
|
rocker_tlv_parse_nested(attrs, ROCKER_TLV_EVENT_MAC_VLAN_MAX, info); |
|
if (!attrs[ROCKER_TLV_EVENT_MAC_VLAN_PPORT] || |
|
!attrs[ROCKER_TLV_EVENT_MAC_VLAN_MAC] || |
|
!attrs[ROCKER_TLV_EVENT_MAC_VLAN_VLAN_ID]) |
|
return -EIO; |
|
port_number = |
|
rocker_tlv_get_u32(attrs[ROCKER_TLV_EVENT_MAC_VLAN_PPORT]) - 1; |
|
addr = rocker_tlv_data(attrs[ROCKER_TLV_EVENT_MAC_VLAN_MAC]); |
|
vlan_id = rocker_tlv_get_be16(attrs[ROCKER_TLV_EVENT_MAC_VLAN_VLAN_ID]); |
|
|
|
if (port_number >= rocker->port_count) |
|
return -EINVAL; |
|
|
|
rocker_port = rocker->ports[port_number]; |
|
return rocker_world_port_ev_mac_vlan_seen(rocker_port, addr, vlan_id); |
|
} |
|
|
|
static int rocker_event_process(const struct rocker *rocker, |
|
const struct rocker_desc_info *desc_info) |
|
{ |
|
const struct rocker_tlv *attrs[ROCKER_TLV_EVENT_MAX + 1]; |
|
const struct rocker_tlv *info; |
|
u16 type; |
|
|
|
rocker_tlv_parse_desc(attrs, ROCKER_TLV_EVENT_MAX, desc_info); |
|
if (!attrs[ROCKER_TLV_EVENT_TYPE] || |
|
!attrs[ROCKER_TLV_EVENT_INFO]) |
|
return -EIO; |
|
|
|
type = rocker_tlv_get_u16(attrs[ROCKER_TLV_EVENT_TYPE]); |
|
info = attrs[ROCKER_TLV_EVENT_INFO]; |
|
|
|
switch (type) { |
|
case ROCKER_TLV_EVENT_TYPE_LINK_CHANGED: |
|
return rocker_event_link_change(rocker, info); |
|
case ROCKER_TLV_EVENT_TYPE_MAC_VLAN_SEEN: |
|
return rocker_event_mac_vlan_seen(rocker, info); |
|
} |
|
|
|
return -EOPNOTSUPP; |
|
} |
|
|
|
static irqreturn_t rocker_event_irq_handler(int irq, void *dev_id) |
|
{ |
|
struct rocker *rocker = dev_id; |
|
const struct pci_dev *pdev = rocker->pdev; |
|
const struct rocker_desc_info *desc_info; |
|
u32 credits = 0; |
|
int err; |
|
|
|
while ((desc_info = rocker_desc_tail_get(&rocker->event_ring))) { |
|
err = rocker_desc_err(desc_info); |
|
if (err) { |
|
dev_err(&pdev->dev, "event desc received with err %d\n", |
|
err); |
|
} else { |
|
err = rocker_event_process(rocker, desc_info); |
|
if (err) |
|
dev_err(&pdev->dev, "event processing failed with err %d\n", |
|
err); |
|
} |
|
rocker_desc_gen_clear(desc_info); |
|
rocker_desc_head_set(rocker, &rocker->event_ring, desc_info); |
|
credits++; |
|
} |
|
rocker_dma_ring_credits_set(rocker, &rocker->event_ring, credits); |
|
|
|
return IRQ_HANDLED; |
|
} |
|
|
|
static irqreturn_t rocker_tx_irq_handler(int irq, void *dev_id) |
|
{ |
|
struct rocker_port *rocker_port = dev_id; |
|
|
|
napi_schedule(&rocker_port->napi_tx); |
|
return IRQ_HANDLED; |
|
} |
|
|
|
static irqreturn_t rocker_rx_irq_handler(int irq, void *dev_id) |
|
{ |
|
struct rocker_port *rocker_port = dev_id; |
|
|
|
napi_schedule(&rocker_port->napi_rx); |
|
return IRQ_HANDLED; |
|
} |
|
|
|
/******************** |
|
* Command interface |
|
********************/ |
|
|
|
int rocker_cmd_exec(struct rocker_port *rocker_port, bool nowait, |
|
rocker_cmd_prep_cb_t prepare, void *prepare_priv, |
|
rocker_cmd_proc_cb_t process, void *process_priv) |
|
{ |
|
struct rocker *rocker = rocker_port->rocker; |
|
struct rocker_desc_info *desc_info; |
|
struct rocker_wait *wait; |
|
unsigned long lock_flags; |
|
int err; |
|
|
|
spin_lock_irqsave(&rocker->cmd_ring_lock, lock_flags); |
|
|
|
desc_info = rocker_desc_head_get(&rocker->cmd_ring); |
|
if (!desc_info) { |
|
spin_unlock_irqrestore(&rocker->cmd_ring_lock, lock_flags); |
|
return -EAGAIN; |
|
} |
|
|
|
wait = rocker_desc_cookie_ptr_get(desc_info); |
|
rocker_wait_init(wait); |
|
wait->nowait = nowait; |
|
|
|
err = prepare(rocker_port, desc_info, prepare_priv); |
|
if (err) { |
|
spin_unlock_irqrestore(&rocker->cmd_ring_lock, lock_flags); |
|
return err; |
|
} |
|
|
|
rocker_desc_head_set(rocker, &rocker->cmd_ring, desc_info); |
|
|
|
spin_unlock_irqrestore(&rocker->cmd_ring_lock, lock_flags); |
|
|
|
if (nowait) |
|
return 0; |
|
|
|
if (!rocker_wait_event_timeout(wait, HZ / 10)) |
|
return -EIO; |
|
|
|
err = rocker_desc_err(desc_info); |
|
if (err) |
|
return err; |
|
|
|
if (process) |
|
err = process(rocker_port, desc_info, process_priv); |
|
|
|
rocker_desc_gen_clear(desc_info); |
|
return err; |
|
} |
|
|
|
static int |
|
rocker_cmd_get_port_settings_prep(const struct rocker_port *rocker_port, |
|
struct rocker_desc_info *desc_info, |
|
void *priv) |
|
{ |
|
struct rocker_tlv *cmd_info; |
|
|
|
if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, |
|
ROCKER_TLV_CMD_TYPE_GET_PORT_SETTINGS)) |
|
return -EMSGSIZE; |
|
cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO); |
|
if (!cmd_info) |
|
return -EMSGSIZE; |
|
if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT, |
|
rocker_port->pport)) |
|
return -EMSGSIZE; |
|
rocker_tlv_nest_end(desc_info, cmd_info); |
|
return 0; |
|
} |
|
|
|
static int |
|
rocker_cmd_get_port_settings_ethtool_proc(const struct rocker_port *rocker_port, |
|
const struct rocker_desc_info *desc_info, |
|
void *priv) |
|
{ |
|
struct ethtool_link_ksettings *ecmd = priv; |
|
const struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1]; |
|
const struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1]; |
|
u32 speed; |
|
u8 duplex; |
|
u8 autoneg; |
|
|
|
rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info); |
|
if (!attrs[ROCKER_TLV_CMD_INFO]) |
|
return -EIO; |
|
|
|
rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX, |
|
attrs[ROCKER_TLV_CMD_INFO]); |
|
if (!info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_SPEED] || |
|
!info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX] || |
|
!info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG]) |
|
return -EIO; |
|
|
|
speed = rocker_tlv_get_u32(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_SPEED]); |
|
duplex = rocker_tlv_get_u8(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX]); |
|
autoneg = rocker_tlv_get_u8(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG]); |
|
|
|
ethtool_link_ksettings_zero_link_mode(ecmd, supported); |
|
ethtool_link_ksettings_add_link_mode(ecmd, supported, TP); |
|
|
|
ecmd->base.phy_address = 0xff; |
|
ecmd->base.port = PORT_TP; |
|
ecmd->base.speed = speed; |
|
ecmd->base.duplex = duplex ? DUPLEX_FULL : DUPLEX_HALF; |
|
ecmd->base.autoneg = autoneg ? AUTONEG_ENABLE : AUTONEG_DISABLE; |
|
|
|
return 0; |
|
} |
|
|
|
static int |
|
rocker_cmd_get_port_settings_macaddr_proc(const struct rocker_port *rocker_port, |
|
const struct rocker_desc_info *desc_info, |
|
void *priv) |
|
{ |
|
unsigned char *macaddr = priv; |
|
const struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1]; |
|
const struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1]; |
|
const struct rocker_tlv *attr; |
|
|
|
rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info); |
|
if (!attrs[ROCKER_TLV_CMD_INFO]) |
|
return -EIO; |
|
|
|
rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX, |
|
attrs[ROCKER_TLV_CMD_INFO]); |
|
attr = info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MACADDR]; |
|
if (!attr) |
|
return -EIO; |
|
|
|
if (rocker_tlv_len(attr) != ETH_ALEN) |
|
return -EINVAL; |
|
|
|
ether_addr_copy(macaddr, rocker_tlv_data(attr)); |
|
return 0; |
|
} |
|
|
|
static int |
|
rocker_cmd_get_port_settings_mode_proc(const struct rocker_port *rocker_port, |
|
const struct rocker_desc_info *desc_info, |
|
void *priv) |
|
{ |
|
u8 *p_mode = priv; |
|
const struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1]; |
|
const struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1]; |
|
const struct rocker_tlv *attr; |
|
|
|
rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info); |
|
if (!attrs[ROCKER_TLV_CMD_INFO]) |
|
return -EIO; |
|
|
|
rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX, |
|
attrs[ROCKER_TLV_CMD_INFO]); |
|
attr = info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MODE]; |
|
if (!attr) |
|
return -EIO; |
|
|
|
*p_mode = rocker_tlv_get_u8(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MODE]); |
|
return 0; |
|
} |
|
|
|
struct port_name { |
|
char *buf; |
|
size_t len; |
|
}; |
|
|
|
static int |
|
rocker_cmd_get_port_settings_phys_name_proc(const struct rocker_port *rocker_port, |
|
const struct rocker_desc_info *desc_info, |
|
void *priv) |
|
{ |
|
const struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1]; |
|
const struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1]; |
|
struct port_name *name = priv; |
|
const struct rocker_tlv *attr; |
|
size_t i, j, len; |
|
const char *str; |
|
|
|
rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info); |
|
if (!attrs[ROCKER_TLV_CMD_INFO]) |
|
return -EIO; |
|
|
|
rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX, |
|
attrs[ROCKER_TLV_CMD_INFO]); |
|
attr = info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_PHYS_NAME]; |
|
if (!attr) |
|
return -EIO; |
|
|
|
len = min_t(size_t, rocker_tlv_len(attr), name->len); |
|
str = rocker_tlv_data(attr); |
|
|
|
/* make sure name only contains alphanumeric characters */ |
|
for (i = j = 0; i < len; ++i) { |
|
if (isalnum(str[i])) { |
|
name->buf[j] = str[i]; |
|
j++; |
|
} |
|
} |
|
|
|
if (j == 0) |
|
return -EIO; |
|
|
|
name->buf[j] = '\0'; |
|
|
|
return 0; |
|
} |
|
|
|
static int |
|
rocker_cmd_set_port_settings_ethtool_prep(const struct rocker_port *rocker_port, |
|
struct rocker_desc_info *desc_info, |
|
void *priv) |
|
{ |
|
struct ethtool_link_ksettings *ecmd = priv; |
|
struct rocker_tlv *cmd_info; |
|
|
|
if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, |
|
ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS)) |
|
return -EMSGSIZE; |
|
cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO); |
|
if (!cmd_info) |
|
return -EMSGSIZE; |
|
if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT, |
|
rocker_port->pport)) |
|
return -EMSGSIZE; |
|
if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_SPEED, |
|
ecmd->base.speed)) |
|
return -EMSGSIZE; |
|
if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX, |
|
ecmd->base.duplex)) |
|
return -EMSGSIZE; |
|
if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG, |
|
ecmd->base.autoneg)) |
|
return -EMSGSIZE; |
|
rocker_tlv_nest_end(desc_info, cmd_info); |
|
return 0; |
|
} |
|
|
|
static int |
|
rocker_cmd_set_port_settings_macaddr_prep(const struct rocker_port *rocker_port, |
|
struct rocker_desc_info *desc_info, |
|
void *priv) |
|
{ |
|
const unsigned char *macaddr = priv; |
|
struct rocker_tlv *cmd_info; |
|
|
|
if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, |
|
ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS)) |
|
return -EMSGSIZE; |
|
cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO); |
|
if (!cmd_info) |
|
return -EMSGSIZE; |
|
if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT, |
|
rocker_port->pport)) |
|
return -EMSGSIZE; |
|
if (rocker_tlv_put(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_MACADDR, |
|
ETH_ALEN, macaddr)) |
|
return -EMSGSIZE; |
|
rocker_tlv_nest_end(desc_info, cmd_info); |
|
return 0; |
|
} |
|
|
|
static int |
|
rocker_cmd_set_port_settings_mtu_prep(const struct rocker_port *rocker_port, |
|
struct rocker_desc_info *desc_info, |
|
void *priv) |
|
{ |
|
int mtu = *(int *)priv; |
|
struct rocker_tlv *cmd_info; |
|
|
|
if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, |
|
ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS)) |
|
return -EMSGSIZE; |
|
cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO); |
|
if (!cmd_info) |
|
return -EMSGSIZE; |
|
if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT, |
|
rocker_port->pport)) |
|
return -EMSGSIZE; |
|
if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_MTU, |
|
mtu)) |
|
return -EMSGSIZE; |
|
rocker_tlv_nest_end(desc_info, cmd_info); |
|
return 0; |
|
} |
|
|
|
static int |
|
rocker_cmd_set_port_learning_prep(const struct rocker_port *rocker_port, |
|
struct rocker_desc_info *desc_info, |
|
void *priv) |
|
{ |
|
bool learning = *(bool *)priv; |
|
struct rocker_tlv *cmd_info; |
|
|
|
if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, |
|
ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS)) |
|
return -EMSGSIZE; |
|
cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO); |
|
if (!cmd_info) |
|
return -EMSGSIZE; |
|
if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT, |
|
rocker_port->pport)) |
|
return -EMSGSIZE; |
|
if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_LEARNING, |
|
learning)) |
|
return -EMSGSIZE; |
|
rocker_tlv_nest_end(desc_info, cmd_info); |
|
return 0; |
|
} |
|
|
|
static int |
|
rocker_cmd_get_port_settings_ethtool(struct rocker_port *rocker_port, |
|
struct ethtool_link_ksettings *ecmd) |
|
{ |
|
return rocker_cmd_exec(rocker_port, false, |
|
rocker_cmd_get_port_settings_prep, NULL, |
|
rocker_cmd_get_port_settings_ethtool_proc, |
|
ecmd); |
|
} |
|
|
|
static int rocker_cmd_get_port_settings_macaddr(struct rocker_port *rocker_port, |
|
unsigned char *macaddr) |
|
{ |
|
return rocker_cmd_exec(rocker_port, false, |
|
rocker_cmd_get_port_settings_prep, NULL, |
|
rocker_cmd_get_port_settings_macaddr_proc, |
|
macaddr); |
|
} |
|
|
|
static int rocker_cmd_get_port_settings_mode(struct rocker_port *rocker_port, |
|
u8 *p_mode) |
|
{ |
|
return rocker_cmd_exec(rocker_port, false, |
|
rocker_cmd_get_port_settings_prep, NULL, |
|
rocker_cmd_get_port_settings_mode_proc, p_mode); |
|
} |
|
|
|
static int |
|
rocker_cmd_set_port_settings_ethtool(struct rocker_port *rocker_port, |
|
const struct ethtool_link_ksettings *ecmd) |
|
{ |
|
struct ethtool_link_ksettings copy_ecmd; |
|
|
|
memcpy(©_ecmd, ecmd, sizeof(copy_ecmd)); |
|
|
|
return rocker_cmd_exec(rocker_port, false, |
|
rocker_cmd_set_port_settings_ethtool_prep, |
|
©_ecmd, NULL, NULL); |
|
} |
|
|
|
static int rocker_cmd_set_port_settings_macaddr(struct rocker_port *rocker_port, |
|
unsigned char *macaddr) |
|
{ |
|
return rocker_cmd_exec(rocker_port, false, |
|
rocker_cmd_set_port_settings_macaddr_prep, |
|
macaddr, NULL, NULL); |
|
} |
|
|
|
static int rocker_cmd_set_port_settings_mtu(struct rocker_port *rocker_port, |
|
int mtu) |
|
{ |
|
return rocker_cmd_exec(rocker_port, false, |
|
rocker_cmd_set_port_settings_mtu_prep, |
|
&mtu, NULL, NULL); |
|
} |
|
|
|
int rocker_port_set_learning(struct rocker_port *rocker_port, |
|
bool learning) |
|
{ |
|
return rocker_cmd_exec(rocker_port, false, |
|
rocker_cmd_set_port_learning_prep, |
|
&learning, NULL, NULL); |
|
} |
|
|
|
/********************** |
|
* Worlds manipulation |
|
**********************/ |
|
|
|
static struct rocker_world_ops *rocker_world_ops[] = { |
|
&rocker_ofdpa_ops, |
|
}; |
|
|
|
#define ROCKER_WORLD_OPS_LEN ARRAY_SIZE(rocker_world_ops) |
|
|
|
static struct rocker_world_ops *rocker_world_ops_find(u8 mode) |
|
{ |
|
int i; |
|
|
|
for (i = 0; i < ROCKER_WORLD_OPS_LEN; i++) |
|
if (rocker_world_ops[i]->mode == mode) |
|
return rocker_world_ops[i]; |
|
return NULL; |
|
} |
|
|
|
static int rocker_world_init(struct rocker *rocker, u8 mode) |
|
{ |
|
struct rocker_world_ops *wops; |
|
int err; |
|
|
|
wops = rocker_world_ops_find(mode); |
|
if (!wops) { |
|
dev_err(&rocker->pdev->dev, "port mode \"%d\" is not supported\n", |
|
mode); |
|
return -EINVAL; |
|
} |
|
rocker->wops = wops; |
|
rocker->wpriv = kzalloc(wops->priv_size, GFP_KERNEL); |
|
if (!rocker->wpriv) |
|
return -ENOMEM; |
|
if (!wops->init) |
|
return 0; |
|
err = wops->init(rocker); |
|
if (err) |
|
kfree(rocker->wpriv); |
|
return err; |
|
} |
|
|
|
static void rocker_world_fini(struct rocker *rocker) |
|
{ |
|
struct rocker_world_ops *wops = rocker->wops; |
|
|
|
if (!wops || !wops->fini) |
|
return; |
|
wops->fini(rocker); |
|
kfree(rocker->wpriv); |
|
} |
|
|
|
static int rocker_world_check_init(struct rocker_port *rocker_port) |
|
{ |
|
struct rocker *rocker = rocker_port->rocker; |
|
u8 mode; |
|
int err; |
|
|
|
err = rocker_cmd_get_port_settings_mode(rocker_port, &mode); |
|
if (err) { |
|
dev_err(&rocker->pdev->dev, "failed to get port mode\n"); |
|
return err; |
|
} |
|
if (rocker->wops) { |
|
if (rocker->wops->mode != mode) { |
|
dev_err(&rocker->pdev->dev, "hardware has ports in different worlds, which is not supported\n"); |
|
return -EINVAL; |
|
} |
|
return 0; |
|
} |
|
return rocker_world_init(rocker, mode); |
|
} |
|
|
|
static int rocker_world_port_pre_init(struct rocker_port *rocker_port) |
|
{ |
|
struct rocker_world_ops *wops = rocker_port->rocker->wops; |
|
int err; |
|
|
|
rocker_port->wpriv = kzalloc(wops->port_priv_size, GFP_KERNEL); |
|
if (!rocker_port->wpriv) |
|
return -ENOMEM; |
|
if (!wops->port_pre_init) |
|
return 0; |
|
err = wops->port_pre_init(rocker_port); |
|
if (err) |
|
kfree(rocker_port->wpriv); |
|
return 0; |
|
} |
|
|
|
static int rocker_world_port_init(struct rocker_port *rocker_port) |
|
{ |
|
struct rocker_world_ops *wops = rocker_port->rocker->wops; |
|
|
|
if (!wops->port_init) |
|
return 0; |
|
return wops->port_init(rocker_port); |
|
} |
|
|
|
static void rocker_world_port_fini(struct rocker_port *rocker_port) |
|
{ |
|
struct rocker_world_ops *wops = rocker_port->rocker->wops; |
|
|
|
if (!wops->port_fini) |
|
return; |
|
wops->port_fini(rocker_port); |
|
} |
|
|
|
static void rocker_world_port_post_fini(struct rocker_port *rocker_port) |
|
{ |
|
struct rocker_world_ops *wops = rocker_port->rocker->wops; |
|
|
|
if (!wops->port_post_fini) |
|
return; |
|
wops->port_post_fini(rocker_port); |
|
kfree(rocker_port->wpriv); |
|
} |
|
|
|
static int rocker_world_port_open(struct rocker_port *rocker_port) |
|
{ |
|
struct rocker_world_ops *wops = rocker_port->rocker->wops; |
|
|
|
if (!wops->port_open) |
|
return 0; |
|
return wops->port_open(rocker_port); |
|
} |
|
|
|
static void rocker_world_port_stop(struct rocker_port *rocker_port) |
|
{ |
|
struct rocker_world_ops *wops = rocker_port->rocker->wops; |
|
|
|
if (!wops->port_stop) |
|
return; |
|
wops->port_stop(rocker_port); |
|
} |
|
|
|
static int rocker_world_port_attr_stp_state_set(struct rocker_port *rocker_port, |
|
u8 state) |
|
{ |
|
struct rocker_world_ops *wops = rocker_port->rocker->wops; |
|
|
|
if (!wops->port_attr_stp_state_set) |
|
return -EOPNOTSUPP; |
|
|
|
return wops->port_attr_stp_state_set(rocker_port, state); |
|
} |
|
|
|
static int |
|
rocker_world_port_attr_bridge_flags_support_get(const struct rocker_port * |
|
rocker_port, |
|
unsigned long * |
|
p_brport_flags_support) |
|
{ |
|
struct rocker_world_ops *wops = rocker_port->rocker->wops; |
|
|
|
if (!wops->port_attr_bridge_flags_support_get) |
|
return -EOPNOTSUPP; |
|
return wops->port_attr_bridge_flags_support_get(rocker_port, |
|
p_brport_flags_support); |
|
} |
|
|
|
static int |
|
rocker_world_port_attr_pre_bridge_flags_set(struct rocker_port *rocker_port, |
|
struct switchdev_brport_flags flags) |
|
{ |
|
struct rocker_world_ops *wops = rocker_port->rocker->wops; |
|
unsigned long brport_flags_s; |
|
int err; |
|
|
|
if (!wops->port_attr_bridge_flags_set) |
|
return -EOPNOTSUPP; |
|
|
|
err = rocker_world_port_attr_bridge_flags_support_get(rocker_port, |
|
&brport_flags_s); |
|
if (err) |
|
return err; |
|
|
|
if (flags.mask & ~brport_flags_s) |
|
return -EINVAL; |
|
|
|
return 0; |
|
} |
|
|
|
static int |
|
rocker_world_port_attr_bridge_flags_set(struct rocker_port *rocker_port, |
|
struct switchdev_brport_flags flags) |
|
{ |
|
struct rocker_world_ops *wops = rocker_port->rocker->wops; |
|
|
|
if (!wops->port_attr_bridge_flags_set) |
|
return -EOPNOTSUPP; |
|
|
|
return wops->port_attr_bridge_flags_set(rocker_port, flags.val); |
|
} |
|
|
|
static int |
|
rocker_world_port_attr_bridge_ageing_time_set(struct rocker_port *rocker_port, |
|
u32 ageing_time) |
|
{ |
|
struct rocker_world_ops *wops = rocker_port->rocker->wops; |
|
|
|
if (!wops->port_attr_bridge_ageing_time_set) |
|
return -EOPNOTSUPP; |
|
|
|
return wops->port_attr_bridge_ageing_time_set(rocker_port, ageing_time); |
|
} |
|
|
|
static int |
|
rocker_world_port_obj_vlan_add(struct rocker_port *rocker_port, |
|
const struct switchdev_obj_port_vlan *vlan) |
|
{ |
|
struct rocker_world_ops *wops = rocker_port->rocker->wops; |
|
|
|
if (!wops->port_obj_vlan_add) |
|
return -EOPNOTSUPP; |
|
|
|
return wops->port_obj_vlan_add(rocker_port, vlan); |
|
} |
|
|
|
static int |
|
rocker_world_port_obj_vlan_del(struct rocker_port *rocker_port, |
|
const struct switchdev_obj_port_vlan *vlan) |
|
{ |
|
struct rocker_world_ops *wops = rocker_port->rocker->wops; |
|
|
|
if (netif_is_bridge_master(vlan->obj.orig_dev)) |
|
return -EOPNOTSUPP; |
|
|
|
if (!wops->port_obj_vlan_del) |
|
return -EOPNOTSUPP; |
|
return wops->port_obj_vlan_del(rocker_port, vlan); |
|
} |
|
|
|
static int |
|
rocker_world_port_fdb_add(struct rocker_port *rocker_port, |
|
struct switchdev_notifier_fdb_info *info) |
|
{ |
|
struct rocker_world_ops *wops = rocker_port->rocker->wops; |
|
|
|
if (!wops->port_obj_fdb_add) |
|
return -EOPNOTSUPP; |
|
|
|
return wops->port_obj_fdb_add(rocker_port, info->vid, info->addr); |
|
} |
|
|
|
static int |
|
rocker_world_port_fdb_del(struct rocker_port *rocker_port, |
|
struct switchdev_notifier_fdb_info *info) |
|
{ |
|
struct rocker_world_ops *wops = rocker_port->rocker->wops; |
|
|
|
if (!wops->port_obj_fdb_del) |
|
return -EOPNOTSUPP; |
|
return wops->port_obj_fdb_del(rocker_port, info->vid, info->addr); |
|
} |
|
|
|
static int rocker_world_port_master_linked(struct rocker_port *rocker_port, |
|
struct net_device *master) |
|
{ |
|
struct rocker_world_ops *wops = rocker_port->rocker->wops; |
|
|
|
if (!wops->port_master_linked) |
|
return -EOPNOTSUPP; |
|
return wops->port_master_linked(rocker_port, master); |
|
} |
|
|
|
static int rocker_world_port_master_unlinked(struct rocker_port *rocker_port, |
|
struct net_device *master) |
|
{ |
|
struct rocker_world_ops *wops = rocker_port->rocker->wops; |
|
|
|
if (!wops->port_master_unlinked) |
|
return -EOPNOTSUPP; |
|
return wops->port_master_unlinked(rocker_port, master); |
|
} |
|
|
|
static int rocker_world_port_neigh_update(struct rocker_port *rocker_port, |
|
struct neighbour *n) |
|
{ |
|
struct rocker_world_ops *wops = rocker_port->rocker->wops; |
|
|
|
if (!wops->port_neigh_update) |
|
return -EOPNOTSUPP; |
|
return wops->port_neigh_update(rocker_port, n); |
|
} |
|
|
|
static int rocker_world_port_neigh_destroy(struct rocker_port *rocker_port, |
|
struct neighbour *n) |
|
{ |
|
struct rocker_world_ops *wops = rocker_port->rocker->wops; |
|
|
|
if (!wops->port_neigh_destroy) |
|
return -EOPNOTSUPP; |
|
return wops->port_neigh_destroy(rocker_port, n); |
|
} |
|
|
|
static int rocker_world_port_ev_mac_vlan_seen(struct rocker_port *rocker_port, |
|
const unsigned char *addr, |
|
__be16 vlan_id) |
|
{ |
|
struct rocker_world_ops *wops = rocker_port->rocker->wops; |
|
|
|
if (!wops->port_ev_mac_vlan_seen) |
|
return -EOPNOTSUPP; |
|
return wops->port_ev_mac_vlan_seen(rocker_port, addr, vlan_id); |
|
} |
|
|
|
static int rocker_world_fib4_add(struct rocker *rocker, |
|
const struct fib_entry_notifier_info *fen_info) |
|
{ |
|
struct rocker_world_ops *wops = rocker->wops; |
|
|
|
if (!wops->fib4_add) |
|
return 0; |
|
return wops->fib4_add(rocker, fen_info); |
|
} |
|
|
|
static int rocker_world_fib4_del(struct rocker *rocker, |
|
const struct fib_entry_notifier_info *fen_info) |
|
{ |
|
struct rocker_world_ops *wops = rocker->wops; |
|
|
|
if (!wops->fib4_del) |
|
return 0; |
|
return wops->fib4_del(rocker, fen_info); |
|
} |
|
|
|
static void rocker_world_fib4_abort(struct rocker *rocker) |
|
{ |
|
struct rocker_world_ops *wops = rocker->wops; |
|
|
|
if (wops->fib4_abort) |
|
wops->fib4_abort(rocker); |
|
} |
|
|
|
/***************** |
|
* Net device ops |
|
*****************/ |
|
|
|
static int rocker_port_open(struct net_device *dev) |
|
{ |
|
struct rocker_port *rocker_port = netdev_priv(dev); |
|
int err; |
|
|
|
err = rocker_port_dma_rings_init(rocker_port); |
|
if (err) |
|
return err; |
|
|
|
err = request_irq(rocker_msix_tx_vector(rocker_port), |
|
rocker_tx_irq_handler, 0, |
|
rocker_driver_name, rocker_port); |
|
if (err) { |
|
netdev_err(rocker_port->dev, "cannot assign tx irq\n"); |
|
goto err_request_tx_irq; |
|
} |
|
|
|
err = request_irq(rocker_msix_rx_vector(rocker_port), |
|
rocker_rx_irq_handler, 0, |
|
rocker_driver_name, rocker_port); |
|
if (err) { |
|
netdev_err(rocker_port->dev, "cannot assign rx irq\n"); |
|
goto err_request_rx_irq; |
|
} |
|
|
|
err = rocker_world_port_open(rocker_port); |
|
if (err) { |
|
netdev_err(rocker_port->dev, "cannot open port in world\n"); |
|
goto err_world_port_open; |
|
} |
|
|
|
napi_enable(&rocker_port->napi_tx); |
|
napi_enable(&rocker_port->napi_rx); |
|
if (!dev->proto_down) |
|
rocker_port_set_enable(rocker_port, true); |
|
netif_start_queue(dev); |
|
return 0; |
|
|
|
err_world_port_open: |
|
free_irq(rocker_msix_rx_vector(rocker_port), rocker_port); |
|
err_request_rx_irq: |
|
free_irq(rocker_msix_tx_vector(rocker_port), rocker_port); |
|
err_request_tx_irq: |
|
rocker_port_dma_rings_fini(rocker_port); |
|
return err; |
|
} |
|
|
|
static int rocker_port_stop(struct net_device *dev) |
|
{ |
|
struct rocker_port *rocker_port = netdev_priv(dev); |
|
|
|
netif_stop_queue(dev); |
|
rocker_port_set_enable(rocker_port, false); |
|
napi_disable(&rocker_port->napi_rx); |
|
napi_disable(&rocker_port->napi_tx); |
|
rocker_world_port_stop(rocker_port); |
|
free_irq(rocker_msix_rx_vector(rocker_port), rocker_port); |
|
free_irq(rocker_msix_tx_vector(rocker_port), rocker_port); |
|
rocker_port_dma_rings_fini(rocker_port); |
|
|
|
return 0; |
|
} |
|
|
|
static void rocker_tx_desc_frags_unmap(const struct rocker_port *rocker_port, |
|
const struct rocker_desc_info *desc_info) |
|
{ |
|
const struct rocker *rocker = rocker_port->rocker; |
|
struct pci_dev *pdev = rocker->pdev; |
|
const struct rocker_tlv *attrs[ROCKER_TLV_TX_MAX + 1]; |
|
struct rocker_tlv *attr; |
|
int rem; |
|
|
|
rocker_tlv_parse_desc(attrs, ROCKER_TLV_TX_MAX, desc_info); |
|
if (!attrs[ROCKER_TLV_TX_FRAGS]) |
|
return; |
|
rocker_tlv_for_each_nested(attr, attrs[ROCKER_TLV_TX_FRAGS], rem) { |
|
const struct rocker_tlv *frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_MAX + 1]; |
|
dma_addr_t dma_handle; |
|
size_t len; |
|
|
|
if (rocker_tlv_type(attr) != ROCKER_TLV_TX_FRAG) |
|
continue; |
|
rocker_tlv_parse_nested(frag_attrs, ROCKER_TLV_TX_FRAG_ATTR_MAX, |
|
attr); |
|
if (!frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_ADDR] || |
|
!frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_LEN]) |
|
continue; |
|
dma_handle = rocker_tlv_get_u64(frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_ADDR]); |
|
len = rocker_tlv_get_u16(frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_LEN]); |
|
dma_unmap_single(&pdev->dev, dma_handle, len, DMA_TO_DEVICE); |
|
} |
|
} |
|
|
|
static int rocker_tx_desc_frag_map_put(const struct rocker_port *rocker_port, |
|
struct rocker_desc_info *desc_info, |
|
char *buf, size_t buf_len) |
|
{ |
|
const struct rocker *rocker = rocker_port->rocker; |
|
struct pci_dev *pdev = rocker->pdev; |
|
dma_addr_t dma_handle; |
|
struct rocker_tlv *frag; |
|
|
|
dma_handle = dma_map_single(&pdev->dev, buf, buf_len, DMA_TO_DEVICE); |
|
if (unlikely(dma_mapping_error(&pdev->dev, dma_handle))) { |
|
if (net_ratelimit()) |
|
netdev_err(rocker_port->dev, "failed to dma map tx frag\n"); |
|
return -EIO; |
|
} |
|
frag = rocker_tlv_nest_start(desc_info, ROCKER_TLV_TX_FRAG); |
|
if (!frag) |
|
goto unmap_frag; |
|
if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_TX_FRAG_ATTR_ADDR, |
|
dma_handle)) |
|
goto nest_cancel; |
|
if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_TX_FRAG_ATTR_LEN, |
|
buf_len)) |
|
goto nest_cancel; |
|
rocker_tlv_nest_end(desc_info, frag); |
|
return 0; |
|
|
|
nest_cancel: |
|
rocker_tlv_nest_cancel(desc_info, frag); |
|
unmap_frag: |
|
dma_unmap_single(&pdev->dev, dma_handle, buf_len, DMA_TO_DEVICE); |
|
return -EMSGSIZE; |
|
} |
|
|
|
static netdev_tx_t rocker_port_xmit(struct sk_buff *skb, struct net_device *dev) |
|
{ |
|
struct rocker_port *rocker_port = netdev_priv(dev); |
|
struct rocker *rocker = rocker_port->rocker; |
|
struct rocker_desc_info *desc_info; |
|
struct rocker_tlv *frags; |
|
int i; |
|
int err; |
|
|
|
desc_info = rocker_desc_head_get(&rocker_port->tx_ring); |
|
if (unlikely(!desc_info)) { |
|
if (net_ratelimit()) |
|
netdev_err(dev, "tx ring full when queue awake\n"); |
|
return NETDEV_TX_BUSY; |
|
} |
|
|
|
rocker_desc_cookie_ptr_set(desc_info, skb); |
|
|
|
frags = rocker_tlv_nest_start(desc_info, ROCKER_TLV_TX_FRAGS); |
|
if (!frags) |
|
goto out; |
|
err = rocker_tx_desc_frag_map_put(rocker_port, desc_info, |
|
skb->data, skb_headlen(skb)); |
|
if (err) |
|
goto nest_cancel; |
|
if (skb_shinfo(skb)->nr_frags > ROCKER_TX_FRAGS_MAX) { |
|
err = skb_linearize(skb); |
|
if (err) |
|
goto unmap_frags; |
|
} |
|
|
|
for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { |
|
const skb_frag_t *frag = &skb_shinfo(skb)->frags[i]; |
|
|
|
err = rocker_tx_desc_frag_map_put(rocker_port, desc_info, |
|
skb_frag_address(frag), |
|
skb_frag_size(frag)); |
|
if (err) |
|
goto unmap_frags; |
|
} |
|
rocker_tlv_nest_end(desc_info, frags); |
|
|
|
rocker_desc_gen_clear(desc_info); |
|
rocker_desc_head_set(rocker, &rocker_port->tx_ring, desc_info); |
|
|
|
desc_info = rocker_desc_head_get(&rocker_port->tx_ring); |
|
if (!desc_info) |
|
netif_stop_queue(dev); |
|
|
|
return NETDEV_TX_OK; |
|
|
|
unmap_frags: |
|
rocker_tx_desc_frags_unmap(rocker_port, desc_info); |
|
nest_cancel: |
|
rocker_tlv_nest_cancel(desc_info, frags); |
|
out: |
|
dev_kfree_skb(skb); |
|
dev->stats.tx_dropped++; |
|
|
|
return NETDEV_TX_OK; |
|
} |
|
|
|
static int rocker_port_set_mac_address(struct net_device *dev, void *p) |
|
{ |
|
struct sockaddr *addr = p; |
|
struct rocker_port *rocker_port = netdev_priv(dev); |
|
int err; |
|
|
|
if (!is_valid_ether_addr(addr->sa_data)) |
|
return -EADDRNOTAVAIL; |
|
|
|
err = rocker_cmd_set_port_settings_macaddr(rocker_port, addr->sa_data); |
|
if (err) |
|
return err; |
|
memcpy(dev->dev_addr, addr->sa_data, dev->addr_len); |
|
return 0; |
|
} |
|
|
|
static int rocker_port_change_mtu(struct net_device *dev, int new_mtu) |
|
{ |
|
struct rocker_port *rocker_port = netdev_priv(dev); |
|
int running = netif_running(dev); |
|
int err; |
|
|
|
if (running) |
|
rocker_port_stop(dev); |
|
|
|
netdev_info(dev, "MTU change from %d to %d\n", dev->mtu, new_mtu); |
|
dev->mtu = new_mtu; |
|
|
|
err = rocker_cmd_set_port_settings_mtu(rocker_port, new_mtu); |
|
if (err) |
|
return err; |
|
|
|
if (running) |
|
err = rocker_port_open(dev); |
|
|
|
return err; |
|
} |
|
|
|
static int rocker_port_get_phys_port_name(struct net_device *dev, |
|
char *buf, size_t len) |
|
{ |
|
struct rocker_port *rocker_port = netdev_priv(dev); |
|
struct port_name name = { .buf = buf, .len = len }; |
|
int err; |
|
|
|
err = rocker_cmd_exec(rocker_port, false, |
|
rocker_cmd_get_port_settings_prep, NULL, |
|
rocker_cmd_get_port_settings_phys_name_proc, |
|
&name); |
|
|
|
return err ? -EOPNOTSUPP : 0; |
|
} |
|
|
|
static int rocker_port_change_proto_down(struct net_device *dev, |
|
bool proto_down) |
|
{ |
|
struct rocker_port *rocker_port = netdev_priv(dev); |
|
|
|
if (rocker_port->dev->flags & IFF_UP) |
|
rocker_port_set_enable(rocker_port, !proto_down); |
|
rocker_port->dev->proto_down = proto_down; |
|
return 0; |
|
} |
|
|
|
static void rocker_port_neigh_destroy(struct net_device *dev, |
|
struct neighbour *n) |
|
{ |
|
struct rocker_port *rocker_port = netdev_priv(n->dev); |
|
int err; |
|
|
|
err = rocker_world_port_neigh_destroy(rocker_port, n); |
|
if (err) |
|
netdev_warn(rocker_port->dev, "failed to handle neigh destroy (err %d)\n", |
|
err); |
|
} |
|
|
|
static int rocker_port_get_port_parent_id(struct net_device *dev, |
|
struct netdev_phys_item_id *ppid) |
|
{ |
|
const struct rocker_port *rocker_port = netdev_priv(dev); |
|
const struct rocker *rocker = rocker_port->rocker; |
|
|
|
ppid->id_len = sizeof(rocker->hw.id); |
|
memcpy(&ppid->id, &rocker->hw.id, ppid->id_len); |
|
|
|
return 0; |
|
} |
|
|
|
static const struct net_device_ops rocker_port_netdev_ops = { |
|
.ndo_open = rocker_port_open, |
|
.ndo_stop = rocker_port_stop, |
|
.ndo_start_xmit = rocker_port_xmit, |
|
.ndo_set_mac_address = rocker_port_set_mac_address, |
|
.ndo_change_mtu = rocker_port_change_mtu, |
|
.ndo_get_phys_port_name = rocker_port_get_phys_port_name, |
|
.ndo_change_proto_down = rocker_port_change_proto_down, |
|
.ndo_neigh_destroy = rocker_port_neigh_destroy, |
|
.ndo_get_port_parent_id = rocker_port_get_port_parent_id, |
|
}; |
|
|
|
/******************** |
|
* swdev interface |
|
********************/ |
|
|
|
static int rocker_port_attr_set(struct net_device *dev, |
|
const struct switchdev_attr *attr) |
|
{ |
|
struct rocker_port *rocker_port = netdev_priv(dev); |
|
int err = 0; |
|
|
|
switch (attr->id) { |
|
case SWITCHDEV_ATTR_ID_PORT_STP_STATE: |
|
err = rocker_world_port_attr_stp_state_set(rocker_port, |
|
attr->u.stp_state); |
|
break; |
|
case SWITCHDEV_ATTR_ID_PORT_PRE_BRIDGE_FLAGS: |
|
err = rocker_world_port_attr_pre_bridge_flags_set(rocker_port, |
|
attr->u.brport_flags); |
|
break; |
|
case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS: |
|
err = rocker_world_port_attr_bridge_flags_set(rocker_port, |
|
attr->u.brport_flags); |
|
break; |
|
case SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME: |
|
err = rocker_world_port_attr_bridge_ageing_time_set(rocker_port, |
|
attr->u.ageing_time); |
|
break; |
|
default: |
|
err = -EOPNOTSUPP; |
|
break; |
|
} |
|
|
|
return err; |
|
} |
|
|
|
static int rocker_port_obj_add(struct net_device *dev, |
|
const struct switchdev_obj *obj) |
|
{ |
|
struct rocker_port *rocker_port = netdev_priv(dev); |
|
int err = 0; |
|
|
|
switch (obj->id) { |
|
case SWITCHDEV_OBJ_ID_PORT_VLAN: |
|
err = rocker_world_port_obj_vlan_add(rocker_port, |
|
SWITCHDEV_OBJ_PORT_VLAN(obj)); |
|
break; |
|
default: |
|
err = -EOPNOTSUPP; |
|
break; |
|
} |
|
|
|
return err; |
|
} |
|
|
|
static int rocker_port_obj_del(struct net_device *dev, |
|
const struct switchdev_obj *obj) |
|
{ |
|
struct rocker_port *rocker_port = netdev_priv(dev); |
|
int err = 0; |
|
|
|
switch (obj->id) { |
|
case SWITCHDEV_OBJ_ID_PORT_VLAN: |
|
err = rocker_world_port_obj_vlan_del(rocker_port, |
|
SWITCHDEV_OBJ_PORT_VLAN(obj)); |
|
break; |
|
default: |
|
err = -EOPNOTSUPP; |
|
break; |
|
} |
|
|
|
return err; |
|
} |
|
|
|
struct rocker_fib_event_work { |
|
struct work_struct work; |
|
union { |
|
struct fib_entry_notifier_info fen_info; |
|
struct fib_rule_notifier_info fr_info; |
|
}; |
|
struct rocker *rocker; |
|
unsigned long event; |
|
}; |
|
|
|
static void rocker_router_fib_event_work(struct work_struct *work) |
|
{ |
|
struct rocker_fib_event_work *fib_work = |
|
container_of(work, struct rocker_fib_event_work, work); |
|
struct rocker *rocker = fib_work->rocker; |
|
struct fib_rule *rule; |
|
int err; |
|
|
|
/* Protect internal structures from changes */ |
|
rtnl_lock(); |
|
switch (fib_work->event) { |
|
case FIB_EVENT_ENTRY_REPLACE: |
|
err = rocker_world_fib4_add(rocker, &fib_work->fen_info); |
|
if (err) |
|
rocker_world_fib4_abort(rocker); |
|
fib_info_put(fib_work->fen_info.fi); |
|
break; |
|
case FIB_EVENT_ENTRY_DEL: |
|
rocker_world_fib4_del(rocker, &fib_work->fen_info); |
|
fib_info_put(fib_work->fen_info.fi); |
|
break; |
|
case FIB_EVENT_RULE_ADD: |
|
case FIB_EVENT_RULE_DEL: |
|
rule = fib_work->fr_info.rule; |
|
if (!fib4_rule_default(rule)) |
|
rocker_world_fib4_abort(rocker); |
|
fib_rule_put(rule); |
|
break; |
|
} |
|
rtnl_unlock(); |
|
kfree(fib_work); |
|
} |
|
|
|
/* Called with rcu_read_lock() */ |
|
static int rocker_router_fib_event(struct notifier_block *nb, |
|
unsigned long event, void *ptr) |
|
{ |
|
struct rocker *rocker = container_of(nb, struct rocker, fib_nb); |
|
struct rocker_fib_event_work *fib_work; |
|
struct fib_notifier_info *info = ptr; |
|
|
|
if (info->family != AF_INET) |
|
return NOTIFY_DONE; |
|
|
|
fib_work = kzalloc(sizeof(*fib_work), GFP_ATOMIC); |
|
if (WARN_ON(!fib_work)) |
|
return NOTIFY_BAD; |
|
|
|
INIT_WORK(&fib_work->work, rocker_router_fib_event_work); |
|
fib_work->rocker = rocker; |
|
fib_work->event = event; |
|
|
|
switch (event) { |
|
case FIB_EVENT_ENTRY_REPLACE: |
|
case FIB_EVENT_ENTRY_DEL: |
|
if (info->family == AF_INET) { |
|
struct fib_entry_notifier_info *fen_info = ptr; |
|
|
|
if (fen_info->fi->fib_nh_is_v6) { |
|
NL_SET_ERR_MSG_MOD(info->extack, "IPv6 gateway with IPv4 route is not supported"); |
|
kfree(fib_work); |
|
return notifier_from_errno(-EINVAL); |
|
} |
|
if (fen_info->fi->nh) { |
|
NL_SET_ERR_MSG_MOD(info->extack, "IPv4 route with nexthop objects is not supported"); |
|
kfree(fib_work); |
|
return notifier_from_errno(-EINVAL); |
|
} |
|
} |
|
|
|
memcpy(&fib_work->fen_info, ptr, sizeof(fib_work->fen_info)); |
|
/* Take referece on fib_info to prevent it from being |
|
* freed while work is queued. Release it afterwards. |
|
*/ |
|
fib_info_hold(fib_work->fen_info.fi); |
|
break; |
|
case FIB_EVENT_RULE_ADD: |
|
case FIB_EVENT_RULE_DEL: |
|
memcpy(&fib_work->fr_info, ptr, sizeof(fib_work->fr_info)); |
|
fib_rule_get(fib_work->fr_info.rule); |
|
break; |
|
} |
|
|
|
queue_work(rocker->rocker_owq, &fib_work->work); |
|
|
|
return NOTIFY_DONE; |
|
} |
|
|
|
/******************** |
|
* ethtool interface |
|
********************/ |
|
|
|
static int |
|
rocker_port_get_link_ksettings(struct net_device *dev, |
|
struct ethtool_link_ksettings *ecmd) |
|
{ |
|
struct rocker_port *rocker_port = netdev_priv(dev); |
|
|
|
return rocker_cmd_get_port_settings_ethtool(rocker_port, ecmd); |
|
} |
|
|
|
static int |
|
rocker_port_set_link_ksettings(struct net_device *dev, |
|
const struct ethtool_link_ksettings *ecmd) |
|
{ |
|
struct rocker_port *rocker_port = netdev_priv(dev); |
|
|
|
return rocker_cmd_set_port_settings_ethtool(rocker_port, ecmd); |
|
} |
|
|
|
static void rocker_port_get_drvinfo(struct net_device *dev, |
|
struct ethtool_drvinfo *drvinfo) |
|
{ |
|
strlcpy(drvinfo->driver, rocker_driver_name, sizeof(drvinfo->driver)); |
|
strlcpy(drvinfo->version, UTS_RELEASE, sizeof(drvinfo->version)); |
|
} |
|
|
|
static struct rocker_port_stats { |
|
char str[ETH_GSTRING_LEN]; |
|
int type; |
|
} rocker_port_stats[] = { |
|
{ "rx_packets", ROCKER_TLV_CMD_PORT_STATS_RX_PKTS, }, |
|
{ "rx_bytes", ROCKER_TLV_CMD_PORT_STATS_RX_BYTES, }, |
|
{ "rx_dropped", ROCKER_TLV_CMD_PORT_STATS_RX_DROPPED, }, |
|
{ "rx_errors", ROCKER_TLV_CMD_PORT_STATS_RX_ERRORS, }, |
|
|
|
{ "tx_packets", ROCKER_TLV_CMD_PORT_STATS_TX_PKTS, }, |
|
{ "tx_bytes", ROCKER_TLV_CMD_PORT_STATS_TX_BYTES, }, |
|
{ "tx_dropped", ROCKER_TLV_CMD_PORT_STATS_TX_DROPPED, }, |
|
{ "tx_errors", ROCKER_TLV_CMD_PORT_STATS_TX_ERRORS, }, |
|
}; |
|
|
|
#define ROCKER_PORT_STATS_LEN ARRAY_SIZE(rocker_port_stats) |
|
|
|
static void rocker_port_get_strings(struct net_device *netdev, u32 stringset, |
|
u8 *data) |
|
{ |
|
u8 *p = data; |
|
int i; |
|
|
|
switch (stringset) { |
|
case ETH_SS_STATS: |
|
for (i = 0; i < ARRAY_SIZE(rocker_port_stats); i++) { |
|
memcpy(p, rocker_port_stats[i].str, ETH_GSTRING_LEN); |
|
p += ETH_GSTRING_LEN; |
|
} |
|
break; |
|
} |
|
} |
|
|
|
static int |
|
rocker_cmd_get_port_stats_prep(const struct rocker_port *rocker_port, |
|
struct rocker_desc_info *desc_info, |
|
void *priv) |
|
{ |
|
struct rocker_tlv *cmd_stats; |
|
|
|
if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, |
|
ROCKER_TLV_CMD_TYPE_GET_PORT_STATS)) |
|
return -EMSGSIZE; |
|
|
|
cmd_stats = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO); |
|
if (!cmd_stats) |
|
return -EMSGSIZE; |
|
|
|
if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_STATS_PPORT, |
|
rocker_port->pport)) |
|
return -EMSGSIZE; |
|
|
|
rocker_tlv_nest_end(desc_info, cmd_stats); |
|
|
|
return 0; |
|
} |
|
|
|
static int |
|
rocker_cmd_get_port_stats_ethtool_proc(const struct rocker_port *rocker_port, |
|
const struct rocker_desc_info *desc_info, |
|
void *priv) |
|
{ |
|
const struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1]; |
|
const struct rocker_tlv *stats_attrs[ROCKER_TLV_CMD_PORT_STATS_MAX + 1]; |
|
const struct rocker_tlv *pattr; |
|
u32 pport; |
|
u64 *data = priv; |
|
int i; |
|
|
|
rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info); |
|
|
|
if (!attrs[ROCKER_TLV_CMD_INFO]) |
|
return -EIO; |
|
|
|
rocker_tlv_parse_nested(stats_attrs, ROCKER_TLV_CMD_PORT_STATS_MAX, |
|
attrs[ROCKER_TLV_CMD_INFO]); |
|
|
|
if (!stats_attrs[ROCKER_TLV_CMD_PORT_STATS_PPORT]) |
|
return -EIO; |
|
|
|
pport = rocker_tlv_get_u32(stats_attrs[ROCKER_TLV_CMD_PORT_STATS_PPORT]); |
|
if (pport != rocker_port->pport) |
|
return -EIO; |
|
|
|
for (i = 0; i < ARRAY_SIZE(rocker_port_stats); i++) { |
|
pattr = stats_attrs[rocker_port_stats[i].type]; |
|
if (!pattr) |
|
continue; |
|
|
|
data[i] = rocker_tlv_get_u64(pattr); |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static int rocker_cmd_get_port_stats_ethtool(struct rocker_port *rocker_port, |
|
void *priv) |
|
{ |
|
return rocker_cmd_exec(rocker_port, false, |
|
rocker_cmd_get_port_stats_prep, NULL, |
|
rocker_cmd_get_port_stats_ethtool_proc, |
|
priv); |
|
} |
|
|
|
static void rocker_port_get_stats(struct net_device *dev, |
|
struct ethtool_stats *stats, u64 *data) |
|
{ |
|
struct rocker_port *rocker_port = netdev_priv(dev); |
|
|
|
if (rocker_cmd_get_port_stats_ethtool(rocker_port, data) != 0) { |
|
int i; |
|
|
|
for (i = 0; i < ARRAY_SIZE(rocker_port_stats); ++i) |
|
data[i] = 0; |
|
} |
|
} |
|
|
|
static int rocker_port_get_sset_count(struct net_device *netdev, int sset) |
|
{ |
|
switch (sset) { |
|
case ETH_SS_STATS: |
|
return ROCKER_PORT_STATS_LEN; |
|
default: |
|
return -EOPNOTSUPP; |
|
} |
|
} |
|
|
|
static const struct ethtool_ops rocker_port_ethtool_ops = { |
|
.get_drvinfo = rocker_port_get_drvinfo, |
|
.get_link = ethtool_op_get_link, |
|
.get_strings = rocker_port_get_strings, |
|
.get_ethtool_stats = rocker_port_get_stats, |
|
.get_sset_count = rocker_port_get_sset_count, |
|
.get_link_ksettings = rocker_port_get_link_ksettings, |
|
.set_link_ksettings = rocker_port_set_link_ksettings, |
|
}; |
|
|
|
/***************** |
|
* NAPI interface |
|
*****************/ |
|
|
|
static struct rocker_port *rocker_port_napi_tx_get(struct napi_struct *napi) |
|
{ |
|
return container_of(napi, struct rocker_port, napi_tx); |
|
} |
|
|
|
static int rocker_port_poll_tx(struct napi_struct *napi, int budget) |
|
{ |
|
struct rocker_port *rocker_port = rocker_port_napi_tx_get(napi); |
|
const struct rocker *rocker = rocker_port->rocker; |
|
const struct rocker_desc_info *desc_info; |
|
u32 credits = 0; |
|
int err; |
|
|
|
/* Cleanup tx descriptors */ |
|
while ((desc_info = rocker_desc_tail_get(&rocker_port->tx_ring))) { |
|
struct sk_buff *skb; |
|
|
|
err = rocker_desc_err(desc_info); |
|
if (err && net_ratelimit()) |
|
netdev_err(rocker_port->dev, "tx desc received with err %d\n", |
|
err); |
|
rocker_tx_desc_frags_unmap(rocker_port, desc_info); |
|
|
|
skb = rocker_desc_cookie_ptr_get(desc_info); |
|
if (err == 0) { |
|
rocker_port->dev->stats.tx_packets++; |
|
rocker_port->dev->stats.tx_bytes += skb->len; |
|
} else { |
|
rocker_port->dev->stats.tx_errors++; |
|
} |
|
|
|
dev_kfree_skb_any(skb); |
|
credits++; |
|
} |
|
|
|
if (credits && netif_queue_stopped(rocker_port->dev)) |
|
netif_wake_queue(rocker_port->dev); |
|
|
|
napi_complete(napi); |
|
rocker_dma_ring_credits_set(rocker, &rocker_port->tx_ring, credits); |
|
|
|
return 0; |
|
} |
|
|
|
static int rocker_port_rx_proc(const struct rocker *rocker, |
|
const struct rocker_port *rocker_port, |
|
struct rocker_desc_info *desc_info) |
|
{ |
|
const struct rocker_tlv *attrs[ROCKER_TLV_RX_MAX + 1]; |
|
struct sk_buff *skb = rocker_desc_cookie_ptr_get(desc_info); |
|
size_t rx_len; |
|
u16 rx_flags = 0; |
|
|
|
if (!skb) |
|
return -ENOENT; |
|
|
|
rocker_tlv_parse_desc(attrs, ROCKER_TLV_RX_MAX, desc_info); |
|
if (!attrs[ROCKER_TLV_RX_FRAG_LEN]) |
|
return -EINVAL; |
|
if (attrs[ROCKER_TLV_RX_FLAGS]) |
|
rx_flags = rocker_tlv_get_u16(attrs[ROCKER_TLV_RX_FLAGS]); |
|
|
|
rocker_dma_rx_ring_skb_unmap(rocker, attrs); |
|
|
|
rx_len = rocker_tlv_get_u16(attrs[ROCKER_TLV_RX_FRAG_LEN]); |
|
skb_put(skb, rx_len); |
|
skb->protocol = eth_type_trans(skb, rocker_port->dev); |
|
|
|
if (rx_flags & ROCKER_RX_FLAGS_FWD_OFFLOAD) |
|
skb->offload_fwd_mark = 1; |
|
|
|
rocker_port->dev->stats.rx_packets++; |
|
rocker_port->dev->stats.rx_bytes += skb->len; |
|
|
|
netif_receive_skb(skb); |
|
|
|
return rocker_dma_rx_ring_skb_alloc(rocker_port, desc_info); |
|
} |
|
|
|
static struct rocker_port *rocker_port_napi_rx_get(struct napi_struct *napi) |
|
{ |
|
return container_of(napi, struct rocker_port, napi_rx); |
|
} |
|
|
|
static int rocker_port_poll_rx(struct napi_struct *napi, int budget) |
|
{ |
|
struct rocker_port *rocker_port = rocker_port_napi_rx_get(napi); |
|
const struct rocker *rocker = rocker_port->rocker; |
|
struct rocker_desc_info *desc_info; |
|
u32 credits = 0; |
|
int err; |
|
|
|
/* Process rx descriptors */ |
|
while (credits < budget && |
|
(desc_info = rocker_desc_tail_get(&rocker_port->rx_ring))) { |
|
err = rocker_desc_err(desc_info); |
|
if (err) { |
|
if (net_ratelimit()) |
|
netdev_err(rocker_port->dev, "rx desc received with err %d\n", |
|
err); |
|
} else { |
|
err = rocker_port_rx_proc(rocker, rocker_port, |
|
desc_info); |
|
if (err && net_ratelimit()) |
|
netdev_err(rocker_port->dev, "rx processing failed with err %d\n", |
|
err); |
|
} |
|
if (err) |
|
rocker_port->dev->stats.rx_errors++; |
|
|
|
rocker_desc_gen_clear(desc_info); |
|
rocker_desc_head_set(rocker, &rocker_port->rx_ring, desc_info); |
|
credits++; |
|
} |
|
|
|
if (credits < budget) |
|
napi_complete_done(napi, credits); |
|
|
|
rocker_dma_ring_credits_set(rocker, &rocker_port->rx_ring, credits); |
|
|
|
return credits; |
|
} |
|
|
|
/***************** |
|
* PCI driver ops |
|
*****************/ |
|
|
|
static void rocker_carrier_init(const struct rocker_port *rocker_port) |
|
{ |
|
const struct rocker *rocker = rocker_port->rocker; |
|
u64 link_status = rocker_read64(rocker, PORT_PHYS_LINK_STATUS); |
|
bool link_up; |
|
|
|
link_up = link_status & (1 << rocker_port->pport); |
|
if (link_up) |
|
netif_carrier_on(rocker_port->dev); |
|
else |
|
netif_carrier_off(rocker_port->dev); |
|
} |
|
|
|
static void rocker_remove_ports(struct rocker *rocker) |
|
{ |
|
struct rocker_port *rocker_port; |
|
int i; |
|
|
|
for (i = 0; i < rocker->port_count; i++) { |
|
rocker_port = rocker->ports[i]; |
|
if (!rocker_port) |
|
continue; |
|
rocker_world_port_fini(rocker_port); |
|
unregister_netdev(rocker_port->dev); |
|
rocker_world_port_post_fini(rocker_port); |
|
free_netdev(rocker_port->dev); |
|
} |
|
rocker_world_fini(rocker); |
|
kfree(rocker->ports); |
|
} |
|
|
|
static void rocker_port_dev_addr_init(struct rocker_port *rocker_port) |
|
{ |
|
const struct rocker *rocker = rocker_port->rocker; |
|
const struct pci_dev *pdev = rocker->pdev; |
|
int err; |
|
|
|
err = rocker_cmd_get_port_settings_macaddr(rocker_port, |
|
rocker_port->dev->dev_addr); |
|
if (err) { |
|
dev_warn(&pdev->dev, "failed to get mac address, using random\n"); |
|
eth_hw_addr_random(rocker_port->dev); |
|
} |
|
} |
|
|
|
#define ROCKER_PORT_MIN_MTU ETH_MIN_MTU |
|
#define ROCKER_PORT_MAX_MTU 9000 |
|
static int rocker_probe_port(struct rocker *rocker, unsigned int port_number) |
|
{ |
|
struct pci_dev *pdev = rocker->pdev; |
|
struct rocker_port *rocker_port; |
|
struct net_device *dev; |
|
int err; |
|
|
|
dev = alloc_etherdev(sizeof(struct rocker_port)); |
|
if (!dev) |
|
return -ENOMEM; |
|
SET_NETDEV_DEV(dev, &pdev->dev); |
|
rocker_port = netdev_priv(dev); |
|
rocker_port->dev = dev; |
|
rocker_port->rocker = rocker; |
|
rocker_port->port_number = port_number; |
|
rocker_port->pport = port_number + 1; |
|
|
|
err = rocker_world_check_init(rocker_port); |
|
if (err) { |
|
dev_err(&pdev->dev, "world init failed\n"); |
|
goto err_world_check_init; |
|
} |
|
|
|
rocker_port_dev_addr_init(rocker_port); |
|
dev->netdev_ops = &rocker_port_netdev_ops; |
|
dev->ethtool_ops = &rocker_port_ethtool_ops; |
|
netif_tx_napi_add(dev, &rocker_port->napi_tx, rocker_port_poll_tx, |
|
NAPI_POLL_WEIGHT); |
|
netif_napi_add(dev, &rocker_port->napi_rx, rocker_port_poll_rx, |
|
NAPI_POLL_WEIGHT); |
|
rocker_carrier_init(rocker_port); |
|
|
|
dev->features |= NETIF_F_NETNS_LOCAL | NETIF_F_SG; |
|
|
|
/* MTU range: 68 - 9000 */ |
|
dev->min_mtu = ROCKER_PORT_MIN_MTU; |
|
dev->max_mtu = ROCKER_PORT_MAX_MTU; |
|
|
|
err = rocker_world_port_pre_init(rocker_port); |
|
if (err) { |
|
dev_err(&pdev->dev, "port world pre-init failed\n"); |
|
goto err_world_port_pre_init; |
|
} |
|
err = register_netdev(dev); |
|
if (err) { |
|
dev_err(&pdev->dev, "register_netdev failed\n"); |
|
goto err_register_netdev; |
|
} |
|
rocker->ports[port_number] = rocker_port; |
|
|
|
err = rocker_world_port_init(rocker_port); |
|
if (err) { |
|
dev_err(&pdev->dev, "port world init failed\n"); |
|
goto err_world_port_init; |
|
} |
|
|
|
return 0; |
|
|
|
err_world_port_init: |
|
rocker->ports[port_number] = NULL; |
|
unregister_netdev(dev); |
|
err_register_netdev: |
|
rocker_world_port_post_fini(rocker_port); |
|
err_world_port_pre_init: |
|
err_world_check_init: |
|
free_netdev(dev); |
|
return err; |
|
} |
|
|
|
static int rocker_probe_ports(struct rocker *rocker) |
|
{ |
|
int i; |
|
size_t alloc_size; |
|
int err; |
|
|
|
alloc_size = sizeof(struct rocker_port *) * rocker->port_count; |
|
rocker->ports = kzalloc(alloc_size, GFP_KERNEL); |
|
if (!rocker->ports) |
|
return -ENOMEM; |
|
for (i = 0; i < rocker->port_count; i++) { |
|
err = rocker_probe_port(rocker, i); |
|
if (err) |
|
goto remove_ports; |
|
} |
|
return 0; |
|
|
|
remove_ports: |
|
rocker_remove_ports(rocker); |
|
return err; |
|
} |
|
|
|
static int rocker_msix_init(struct rocker *rocker) |
|
{ |
|
struct pci_dev *pdev = rocker->pdev; |
|
int msix_entries; |
|
int i; |
|
int err; |
|
|
|
msix_entries = pci_msix_vec_count(pdev); |
|
if (msix_entries < 0) |
|
return msix_entries; |
|
|
|
if (msix_entries != ROCKER_MSIX_VEC_COUNT(rocker->port_count)) |
|
return -EINVAL; |
|
|
|
rocker->msix_entries = kmalloc_array(msix_entries, |
|
sizeof(struct msix_entry), |
|
GFP_KERNEL); |
|
if (!rocker->msix_entries) |
|
return -ENOMEM; |
|
|
|
for (i = 0; i < msix_entries; i++) |
|
rocker->msix_entries[i].entry = i; |
|
|
|
err = pci_enable_msix_exact(pdev, rocker->msix_entries, msix_entries); |
|
if (err < 0) |
|
goto err_enable_msix; |
|
|
|
return 0; |
|
|
|
err_enable_msix: |
|
kfree(rocker->msix_entries); |
|
return err; |
|
} |
|
|
|
static void rocker_msix_fini(const struct rocker *rocker) |
|
{ |
|
pci_disable_msix(rocker->pdev); |
|
kfree(rocker->msix_entries); |
|
} |
|
|
|
static bool rocker_port_dev_check(const struct net_device *dev) |
|
{ |
|
return dev->netdev_ops == &rocker_port_netdev_ops; |
|
} |
|
|
|
static int |
|
rocker_switchdev_port_attr_set_event(struct net_device *netdev, |
|
struct switchdev_notifier_port_attr_info *port_attr_info) |
|
{ |
|
int err; |
|
|
|
err = rocker_port_attr_set(netdev, port_attr_info->attr); |
|
|
|
port_attr_info->handled = true; |
|
return notifier_from_errno(err); |
|
} |
|
|
|
struct rocker_switchdev_event_work { |
|
struct work_struct work; |
|
struct switchdev_notifier_fdb_info fdb_info; |
|
struct rocker_port *rocker_port; |
|
unsigned long event; |
|
}; |
|
|
|
static void |
|
rocker_fdb_offload_notify(struct rocker_port *rocker_port, |
|
struct switchdev_notifier_fdb_info *recv_info) |
|
{ |
|
struct switchdev_notifier_fdb_info info = {}; |
|
|
|
info.addr = recv_info->addr; |
|
info.vid = recv_info->vid; |
|
info.offloaded = true; |
|
call_switchdev_notifiers(SWITCHDEV_FDB_OFFLOADED, |
|
rocker_port->dev, &info.info, NULL); |
|
} |
|
|
|
static void rocker_switchdev_event_work(struct work_struct *work) |
|
{ |
|
struct rocker_switchdev_event_work *switchdev_work = |
|
container_of(work, struct rocker_switchdev_event_work, work); |
|
struct rocker_port *rocker_port = switchdev_work->rocker_port; |
|
struct switchdev_notifier_fdb_info *fdb_info; |
|
int err; |
|
|
|
rtnl_lock(); |
|
switch (switchdev_work->event) { |
|
case SWITCHDEV_FDB_ADD_TO_DEVICE: |
|
fdb_info = &switchdev_work->fdb_info; |
|
if (!fdb_info->added_by_user || fdb_info->is_local) |
|
break; |
|
err = rocker_world_port_fdb_add(rocker_port, fdb_info); |
|
if (err) { |
|
netdev_dbg(rocker_port->dev, "fdb add failed err=%d\n", err); |
|
break; |
|
} |
|
rocker_fdb_offload_notify(rocker_port, fdb_info); |
|
break; |
|
case SWITCHDEV_FDB_DEL_TO_DEVICE: |
|
fdb_info = &switchdev_work->fdb_info; |
|
if (!fdb_info->added_by_user || fdb_info->is_local) |
|
break; |
|
err = rocker_world_port_fdb_del(rocker_port, fdb_info); |
|
if (err) |
|
netdev_dbg(rocker_port->dev, "fdb add failed err=%d\n", err); |
|
break; |
|
} |
|
rtnl_unlock(); |
|
|
|
kfree(switchdev_work->fdb_info.addr); |
|
kfree(switchdev_work); |
|
dev_put(rocker_port->dev); |
|
} |
|
|
|
/* called under rcu_read_lock() */ |
|
static int rocker_switchdev_event(struct notifier_block *unused, |
|
unsigned long event, void *ptr) |
|
{ |
|
struct net_device *dev = switchdev_notifier_info_to_dev(ptr); |
|
struct rocker_switchdev_event_work *switchdev_work; |
|
struct switchdev_notifier_fdb_info *fdb_info = ptr; |
|
struct rocker_port *rocker_port; |
|
|
|
if (!rocker_port_dev_check(dev)) |
|
return NOTIFY_DONE; |
|
|
|
if (event == SWITCHDEV_PORT_ATTR_SET) |
|
return rocker_switchdev_port_attr_set_event(dev, ptr); |
|
|
|
rocker_port = netdev_priv(dev); |
|
switchdev_work = kzalloc(sizeof(*switchdev_work), GFP_ATOMIC); |
|
if (WARN_ON(!switchdev_work)) |
|
return NOTIFY_BAD; |
|
|
|
INIT_WORK(&switchdev_work->work, rocker_switchdev_event_work); |
|
switchdev_work->rocker_port = rocker_port; |
|
switchdev_work->event = event; |
|
|
|
switch (event) { |
|
case SWITCHDEV_FDB_ADD_TO_DEVICE: |
|
case SWITCHDEV_FDB_DEL_TO_DEVICE: |
|
memcpy(&switchdev_work->fdb_info, ptr, |
|
sizeof(switchdev_work->fdb_info)); |
|
switchdev_work->fdb_info.addr = kzalloc(ETH_ALEN, GFP_ATOMIC); |
|
if (unlikely(!switchdev_work->fdb_info.addr)) { |
|
kfree(switchdev_work); |
|
return NOTIFY_BAD; |
|
} |
|
|
|
ether_addr_copy((u8 *)switchdev_work->fdb_info.addr, |
|
fdb_info->addr); |
|
/* Take a reference on the rocker device */ |
|
dev_hold(dev); |
|
break; |
|
default: |
|
kfree(switchdev_work); |
|
return NOTIFY_DONE; |
|
} |
|
|
|
queue_work(rocker_port->rocker->rocker_owq, |
|
&switchdev_work->work); |
|
return NOTIFY_DONE; |
|
} |
|
|
|
static int |
|
rocker_switchdev_port_obj_event(unsigned long event, struct net_device *netdev, |
|
struct switchdev_notifier_port_obj_info *port_obj_info) |
|
{ |
|
int err = -EOPNOTSUPP; |
|
|
|
switch (event) { |
|
case SWITCHDEV_PORT_OBJ_ADD: |
|
err = rocker_port_obj_add(netdev, port_obj_info->obj); |
|
break; |
|
case SWITCHDEV_PORT_OBJ_DEL: |
|
err = rocker_port_obj_del(netdev, port_obj_info->obj); |
|
break; |
|
} |
|
|
|
port_obj_info->handled = true; |
|
return notifier_from_errno(err); |
|
} |
|
|
|
static int rocker_switchdev_blocking_event(struct notifier_block *unused, |
|
unsigned long event, void *ptr) |
|
{ |
|
struct net_device *dev = switchdev_notifier_info_to_dev(ptr); |
|
|
|
if (!rocker_port_dev_check(dev)) |
|
return NOTIFY_DONE; |
|
|
|
switch (event) { |
|
case SWITCHDEV_PORT_OBJ_ADD: |
|
case SWITCHDEV_PORT_OBJ_DEL: |
|
return rocker_switchdev_port_obj_event(event, dev, ptr); |
|
case SWITCHDEV_PORT_ATTR_SET: |
|
return rocker_switchdev_port_attr_set_event(dev, ptr); |
|
} |
|
|
|
return NOTIFY_DONE; |
|
} |
|
|
|
static struct notifier_block rocker_switchdev_notifier = { |
|
.notifier_call = rocker_switchdev_event, |
|
}; |
|
|
|
static struct notifier_block rocker_switchdev_blocking_notifier = { |
|
.notifier_call = rocker_switchdev_blocking_event, |
|
}; |
|
|
|
static int rocker_probe(struct pci_dev *pdev, const struct pci_device_id *id) |
|
{ |
|
struct notifier_block *nb; |
|
struct rocker *rocker; |
|
int err; |
|
|
|
rocker = kzalloc(sizeof(*rocker), GFP_KERNEL); |
|
if (!rocker) |
|
return -ENOMEM; |
|
|
|
err = pci_enable_device(pdev); |
|
if (err) { |
|
dev_err(&pdev->dev, "pci_enable_device failed\n"); |
|
goto err_pci_enable_device; |
|
} |
|
|
|
err = pci_request_regions(pdev, rocker_driver_name); |
|
if (err) { |
|
dev_err(&pdev->dev, "pci_request_regions failed\n"); |
|
goto err_pci_request_regions; |
|
} |
|
|
|
err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(64)); |
|
if (!err) { |
|
err = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64)); |
|
if (err) { |
|
dev_err(&pdev->dev, "dma_set_coherent_mask failed\n"); |
|
goto err_pci_set_dma_mask; |
|
} |
|
} else { |
|
err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32)); |
|
if (err) { |
|
dev_err(&pdev->dev, "dma_set_mask failed\n"); |
|
goto err_pci_set_dma_mask; |
|
} |
|
} |
|
|
|
if (pci_resource_len(pdev, 0) < ROCKER_PCI_BAR0_SIZE) { |
|
dev_err(&pdev->dev, "invalid PCI region size\n"); |
|
err = -EINVAL; |
|
goto err_pci_resource_len_check; |
|
} |
|
|
|
rocker->hw_addr = ioremap(pci_resource_start(pdev, 0), |
|
pci_resource_len(pdev, 0)); |
|
if (!rocker->hw_addr) { |
|
dev_err(&pdev->dev, "ioremap failed\n"); |
|
err = -EIO; |
|
goto err_ioremap; |
|
} |
|
pci_set_master(pdev); |
|
|
|
rocker->pdev = pdev; |
|
pci_set_drvdata(pdev, rocker); |
|
|
|
rocker->port_count = rocker_read32(rocker, PORT_PHYS_COUNT); |
|
|
|
err = rocker_msix_init(rocker); |
|
if (err) { |
|
dev_err(&pdev->dev, "MSI-X init failed\n"); |
|
goto err_msix_init; |
|
} |
|
|
|
err = rocker_basic_hw_test(rocker); |
|
if (err) { |
|
dev_err(&pdev->dev, "basic hw test failed\n"); |
|
goto err_basic_hw_test; |
|
} |
|
|
|
rocker_write32(rocker, CONTROL, ROCKER_CONTROL_RESET); |
|
|
|
err = rocker_dma_rings_init(rocker); |
|
if (err) |
|
goto err_dma_rings_init; |
|
|
|
err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD), |
|
rocker_cmd_irq_handler, 0, |
|
rocker_driver_name, rocker); |
|
if (err) { |
|
dev_err(&pdev->dev, "cannot assign cmd irq\n"); |
|
goto err_request_cmd_irq; |
|
} |
|
|
|
err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT), |
|
rocker_event_irq_handler, 0, |
|
rocker_driver_name, rocker); |
|
if (err) { |
|
dev_err(&pdev->dev, "cannot assign event irq\n"); |
|
goto err_request_event_irq; |
|
} |
|
|
|
rocker->rocker_owq = alloc_ordered_workqueue(rocker_driver_name, |
|
WQ_MEM_RECLAIM); |
|
if (!rocker->rocker_owq) { |
|
err = -ENOMEM; |
|
goto err_alloc_ordered_workqueue; |
|
} |
|
|
|
err = rocker_probe_ports(rocker); |
|
if (err) { |
|
dev_err(&pdev->dev, "failed to probe ports\n"); |
|
goto err_probe_ports; |
|
} |
|
|
|
/* Only FIBs pointing to our own netdevs are programmed into |
|
* the device, so no need to pass a callback. |
|
*/ |
|
rocker->fib_nb.notifier_call = rocker_router_fib_event; |
|
err = register_fib_notifier(&init_net, &rocker->fib_nb, NULL, NULL); |
|
if (err) |
|
goto err_register_fib_notifier; |
|
|
|
err = register_switchdev_notifier(&rocker_switchdev_notifier); |
|
if (err) { |
|
dev_err(&pdev->dev, "Failed to register switchdev notifier\n"); |
|
goto err_register_switchdev_notifier; |
|
} |
|
|
|
nb = &rocker_switchdev_blocking_notifier; |
|
err = register_switchdev_blocking_notifier(nb); |
|
if (err) { |
|
dev_err(&pdev->dev, "Failed to register switchdev blocking notifier\n"); |
|
goto err_register_switchdev_blocking_notifier; |
|
} |
|
|
|
rocker->hw.id = rocker_read64(rocker, SWITCH_ID); |
|
|
|
dev_info(&pdev->dev, "Rocker switch with id %*phN\n", |
|
(int)sizeof(rocker->hw.id), &rocker->hw.id); |
|
|
|
return 0; |
|
|
|
err_register_switchdev_blocking_notifier: |
|
unregister_switchdev_notifier(&rocker_switchdev_notifier); |
|
err_register_switchdev_notifier: |
|
unregister_fib_notifier(&init_net, &rocker->fib_nb); |
|
err_register_fib_notifier: |
|
rocker_remove_ports(rocker); |
|
err_probe_ports: |
|
destroy_workqueue(rocker->rocker_owq); |
|
err_alloc_ordered_workqueue: |
|
free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT), rocker); |
|
err_request_event_irq: |
|
free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD), rocker); |
|
err_request_cmd_irq: |
|
rocker_dma_rings_fini(rocker); |
|
err_dma_rings_init: |
|
err_basic_hw_test: |
|
rocker_msix_fini(rocker); |
|
err_msix_init: |
|
iounmap(rocker->hw_addr); |
|
err_ioremap: |
|
err_pci_resource_len_check: |
|
err_pci_set_dma_mask: |
|
pci_release_regions(pdev); |
|
err_pci_request_regions: |
|
pci_disable_device(pdev); |
|
err_pci_enable_device: |
|
kfree(rocker); |
|
return err; |
|
} |
|
|
|
static void rocker_remove(struct pci_dev *pdev) |
|
{ |
|
struct rocker *rocker = pci_get_drvdata(pdev); |
|
struct notifier_block *nb; |
|
|
|
nb = &rocker_switchdev_blocking_notifier; |
|
unregister_switchdev_blocking_notifier(nb); |
|
|
|
unregister_switchdev_notifier(&rocker_switchdev_notifier); |
|
unregister_fib_notifier(&init_net, &rocker->fib_nb); |
|
rocker_remove_ports(rocker); |
|
rocker_write32(rocker, CONTROL, ROCKER_CONTROL_RESET); |
|
destroy_workqueue(rocker->rocker_owq); |
|
free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT), rocker); |
|
free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD), rocker); |
|
rocker_dma_rings_fini(rocker); |
|
rocker_msix_fini(rocker); |
|
iounmap(rocker->hw_addr); |
|
pci_release_regions(rocker->pdev); |
|
pci_disable_device(rocker->pdev); |
|
kfree(rocker); |
|
} |
|
|
|
static struct pci_driver rocker_pci_driver = { |
|
.name = rocker_driver_name, |
|
.id_table = rocker_pci_id_table, |
|
.probe = rocker_probe, |
|
.remove = rocker_remove, |
|
}; |
|
|
|
/************************************ |
|
* Net device notifier event handler |
|
************************************/ |
|
|
|
static bool rocker_port_dev_check_under(const struct net_device *dev, |
|
struct rocker *rocker) |
|
{ |
|
struct rocker_port *rocker_port; |
|
|
|
if (!rocker_port_dev_check(dev)) |
|
return false; |
|
|
|
rocker_port = netdev_priv(dev); |
|
if (rocker_port->rocker != rocker) |
|
return false; |
|
|
|
return true; |
|
} |
|
|
|
struct rocker_walk_data { |
|
struct rocker *rocker; |
|
struct rocker_port *port; |
|
}; |
|
|
|
static int rocker_lower_dev_walk(struct net_device *lower_dev, |
|
struct netdev_nested_priv *priv) |
|
{ |
|
struct rocker_walk_data *data = (struct rocker_walk_data *)priv->data; |
|
int ret = 0; |
|
|
|
if (rocker_port_dev_check_under(lower_dev, data->rocker)) { |
|
data->port = netdev_priv(lower_dev); |
|
ret = 1; |
|
} |
|
|
|
return ret; |
|
} |
|
|
|
struct rocker_port *rocker_port_dev_lower_find(struct net_device *dev, |
|
struct rocker *rocker) |
|
{ |
|
struct netdev_nested_priv priv; |
|
struct rocker_walk_data data; |
|
|
|
if (rocker_port_dev_check_under(dev, rocker)) |
|
return netdev_priv(dev); |
|
|
|
data.rocker = rocker; |
|
data.port = NULL; |
|
priv.data = (void *)&data; |
|
netdev_walk_all_lower_dev(dev, rocker_lower_dev_walk, &priv); |
|
|
|
return data.port; |
|
} |
|
|
|
static int rocker_netdevice_event(struct notifier_block *unused, |
|
unsigned long event, void *ptr) |
|
{ |
|
struct net_device *dev = netdev_notifier_info_to_dev(ptr); |
|
struct netdev_notifier_changeupper_info *info; |
|
struct rocker_port *rocker_port; |
|
int err; |
|
|
|
if (!rocker_port_dev_check(dev)) |
|
return NOTIFY_DONE; |
|
|
|
switch (event) { |
|
case NETDEV_CHANGEUPPER: |
|
info = ptr; |
|
if (!info->master) |
|
goto out; |
|
rocker_port = netdev_priv(dev); |
|
if (info->linking) { |
|
err = rocker_world_port_master_linked(rocker_port, |
|
info->upper_dev); |
|
if (err) |
|
netdev_warn(dev, "failed to reflect master linked (err %d)\n", |
|
err); |
|
} else { |
|
err = rocker_world_port_master_unlinked(rocker_port, |
|
info->upper_dev); |
|
if (err) |
|
netdev_warn(dev, "failed to reflect master unlinked (err %d)\n", |
|
err); |
|
} |
|
} |
|
out: |
|
return NOTIFY_DONE; |
|
} |
|
|
|
static struct notifier_block rocker_netdevice_nb __read_mostly = { |
|
.notifier_call = rocker_netdevice_event, |
|
}; |
|
|
|
/************************************ |
|
* Net event notifier event handler |
|
************************************/ |
|
|
|
static int rocker_netevent_event(struct notifier_block *unused, |
|
unsigned long event, void *ptr) |
|
{ |
|
struct rocker_port *rocker_port; |
|
struct net_device *dev; |
|
struct neighbour *n = ptr; |
|
int err; |
|
|
|
switch (event) { |
|
case NETEVENT_NEIGH_UPDATE: |
|
if (n->tbl != &arp_tbl) |
|
return NOTIFY_DONE; |
|
dev = n->dev; |
|
if (!rocker_port_dev_check(dev)) |
|
return NOTIFY_DONE; |
|
rocker_port = netdev_priv(dev); |
|
err = rocker_world_port_neigh_update(rocker_port, n); |
|
if (err) |
|
netdev_warn(dev, "failed to handle neigh update (err %d)\n", |
|
err); |
|
break; |
|
} |
|
|
|
return NOTIFY_DONE; |
|
} |
|
|
|
static struct notifier_block rocker_netevent_nb __read_mostly = { |
|
.notifier_call = rocker_netevent_event, |
|
}; |
|
|
|
/*********************** |
|
* Module init and exit |
|
***********************/ |
|
|
|
static int __init rocker_module_init(void) |
|
{ |
|
int err; |
|
|
|
register_netdevice_notifier(&rocker_netdevice_nb); |
|
register_netevent_notifier(&rocker_netevent_nb); |
|
err = pci_register_driver(&rocker_pci_driver); |
|
if (err) |
|
goto err_pci_register_driver; |
|
return 0; |
|
|
|
err_pci_register_driver: |
|
unregister_netevent_notifier(&rocker_netevent_nb); |
|
unregister_netdevice_notifier(&rocker_netdevice_nb); |
|
return err; |
|
} |
|
|
|
static void __exit rocker_module_exit(void) |
|
{ |
|
unregister_netevent_notifier(&rocker_netevent_nb); |
|
unregister_netdevice_notifier(&rocker_netdevice_nb); |
|
pci_unregister_driver(&rocker_pci_driver); |
|
} |
|
|
|
module_init(rocker_module_init); |
|
module_exit(rocker_module_exit); |
|
|
|
MODULE_LICENSE("GPL v2"); |
|
MODULE_AUTHOR("Jiri Pirko <[email protected]>"); |
|
MODULE_AUTHOR("Scott Feldman <[email protected]>"); |
|
MODULE_DESCRIPTION("Rocker switch device driver"); |
|
MODULE_DEVICE_TABLE(pci, rocker_pci_id_table);
|
|
|