netxen_nic_init.c

来自「linux 内核源代码」· C语言 代码 · 共 1,553 行 · 第 1/3 页

						return ret;
				}
				else {
					printk(KERN_INFO "Data write did not "
					   "succeed at address 0x%x\n", addridx);
					break;
				}
			}
		}

		bytes += 4;
		addridx += 4;
	}

	return ret;
}

int netxen_rom_fast_write_words(struct netxen_adapter *adapter, int addr, 
					u8 *bytes, size_t size)
{
	int ret = 0;

	ret = rom_lock(adapter);
	if (ret < 0)
		return ret;

	ret = do_rom_fast_write_words(adapter, addr, bytes, size);
	netxen_rom_unlock(adapter);

	return ret;
}

int netxen_rom_wrsr(struct netxen_adapter *adapter, int data)
{
	int ret;

	ret = netxen_rom_wren(adapter);
	if (ret < 0)
		return ret;

	netxen_crb_writelit_adapter(adapter, NETXEN_ROMUSB_ROM_WDATA, data);
	netxen_crb_writelit_adapter(adapter, 
					NETXEN_ROMUSB_ROM_INSTR_OPCODE, 0x1);

	ret = netxen_wait_rom_done(adapter);
	if (ret < 0)
		return ret;

	return netxen_rom_wip_poll(adapter);
}

int netxen_rom_rdsr(struct netxen_adapter *adapter)
{
	int ret;

	ret = rom_lock(adapter);
	if (ret < 0)
		return ret;

	ret = netxen_do_rom_rdsr(adapter);
	netxen_rom_unlock(adapter);
	return ret;
}

int netxen_backup_crbinit(struct netxen_adapter *adapter)
{
	int ret = FLASH_SUCCESS;
	int val;
	char *buffer = kmalloc(NETXEN_FLASH_SECTOR_SIZE, GFP_KERNEL);

	if (!buffer)
		return -ENOMEM;	
	/* unlock sector 63 */
	val = netxen_rom_rdsr(adapter);
	val = val & 0xe3;
	ret = netxen_rom_wrsr(adapter, val);
	if (ret != FLASH_SUCCESS)
		goto out_kfree;

	ret = netxen_rom_wip_poll(adapter);
	if (ret != FLASH_SUCCESS)
		goto out_kfree;

	/* copy  sector 0 to sector 63 */
	ret = netxen_rom_fast_read_words(adapter, NETXEN_CRBINIT_START, 
					buffer, NETXEN_FLASH_SECTOR_SIZE);
	if (ret != FLASH_SUCCESS)
		goto out_kfree;

	ret = netxen_rom_fast_write_words(adapter, NETXEN_FIXED_START, 
					buffer, NETXEN_FLASH_SECTOR_SIZE);
	if (ret != FLASH_SUCCESS)
		goto out_kfree;

	/* lock sector 63 */
	val = netxen_rom_rdsr(adapter);
	if (!(val & 0x8)) {
		val |= (0x1 << 2);
		/* lock sector 63 */
		if (netxen_rom_wrsr(adapter, val) == 0) {
			ret = netxen_rom_wip_poll(adapter);
			if (ret != FLASH_SUCCESS)
				goto out_kfree;

			/* lock SR writes */
			ret = netxen_rom_wip_poll(adapter);
			if (ret != FLASH_SUCCESS)
				goto out_kfree;
		}
	}

out_kfree:
	kfree(buffer);
	return ret;
}

int netxen_do_rom_se(struct netxen_adapter *adapter, int addr)
{
	netxen_rom_wren(adapter);
	netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_ADDRESS, addr);
	netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_ABYTE_CNT, 3);
	netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_INSTR_OPCODE,
			     M25P_INSTR_SE);
	if (netxen_wait_rom_done(adapter)) {
		netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_ABYTE_CNT, 0);
		return -1;
	}
	return netxen_rom_wip_poll(adapter);
}

void check_erased_flash(struct netxen_adapter *adapter, int addr)
{
	int i;
	int val;
	int count = 0, erased_errors = 0;
	int range;

	range = (addr == NETXEN_USER_START) ? 
		NETXEN_FIXED_START : addr + NETXEN_FLASH_SECTOR_SIZE;
	
	for (i = addr; i < range; i += 4) {
		netxen_rom_fast_read(adapter, i, &val);
		if (val != 0xffffffff)
			erased_errors++;
		count++;
	}

	if (erased_errors)
		printk(KERN_INFO "0x%x out of 0x%x words fail to be erased "
			"for sector address: %x\n", erased_errors, count, addr);
}

int netxen_rom_se(struct netxen_adapter *adapter, int addr)
{
	int ret = 0;
	if (rom_lock(adapter) != 0) {
		return -1;
	}
	ret = netxen_do_rom_se(adapter, addr);
	netxen_rom_unlock(adapter);
	msleep(30);
	check_erased_flash(adapter, addr);

	return ret;
}

int
netxen_flash_erase_sections(struct netxen_adapter *adapter, int start, int end)
{
	int ret = FLASH_SUCCESS;
	int i;

	for (i = start; i < end; i++) {
		ret = netxen_rom_se(adapter, i * NETXEN_FLASH_SECTOR_SIZE);
		if (ret)
			break;
		ret = netxen_rom_wip_poll(adapter);
		if (ret < 0)
			return ret;
	}

	return ret;
}

int
netxen_flash_erase_secondary(struct netxen_adapter *adapter)
{
	int ret = FLASH_SUCCESS;
	int start, end;

	start = NETXEN_SECONDARY_START / NETXEN_FLASH_SECTOR_SIZE;
	end   = NETXEN_USER_START / NETXEN_FLASH_SECTOR_SIZE;
	ret = netxen_flash_erase_sections(adapter, start, end);

	return ret;
}

int
netxen_flash_erase_primary(struct netxen_adapter *adapter)
{
	int ret = FLASH_SUCCESS;
	int start, end;

	start = NETXEN_PRIMARY_START / NETXEN_FLASH_SECTOR_SIZE;
	end   = NETXEN_SECONDARY_START / NETXEN_FLASH_SECTOR_SIZE;
	ret = netxen_flash_erase_sections(adapter, start, end);

	return ret;
}

void netxen_halt_pegs(struct netxen_adapter *adapter)
{
	 netxen_crb_writelit_adapter(adapter, NETXEN_CRB_PEG_NET_0 + 0x3c, 1);
	 netxen_crb_writelit_adapter(adapter, NETXEN_CRB_PEG_NET_1 + 0x3c, 1);
	 netxen_crb_writelit_adapter(adapter, NETXEN_CRB_PEG_NET_2 + 0x3c, 1);
	 netxen_crb_writelit_adapter(adapter, NETXEN_CRB_PEG_NET_3 + 0x3c, 1);
}

int netxen_flash_unlock(struct netxen_adapter *adapter)
{
	int ret = 0;

	ret = netxen_rom_wrsr(adapter, 0);
	if (ret < 0)
		return ret;

	ret = netxen_rom_wren(adapter);
	if (ret < 0)
		return ret;

	return ret;
}

#define NETXEN_BOARDTYPE		0x4008
#define NETXEN_BOARDNUM 		0x400c
#define NETXEN_CHIPNUM			0x4010
#define NETXEN_ROMBUS_RESET		0xFFFFFFFF
#define NETXEN_ROM_FIRST_BARRIER	0x800000000ULL
#define NETXEN_ROM_FOUND_INIT		0x400

int netxen_pinit_from_rom(struct netxen_adapter *adapter, int verbose)
{
	int addr, val, status;
	int n, i;
	int init_delay = 0;
	struct crb_addr_pair *buf;
	u32 off;

	/* resetall */
	status = netxen_nic_get_board_info(adapter);
	if (status)
		printk("%s: netxen_pinit_from_rom: Error getting board info\n",
		       netxen_nic_driver_name);

	netxen_crb_writelit_adapter(adapter, NETXEN_ROMUSB_GLB_SW_RESET,
				    NETXEN_ROMBUS_RESET);

	if (verbose) {
		int val;
		if (netxen_rom_fast_read(adapter, NETXEN_BOARDTYPE, &val) == 0)
			printk("P2 ROM board type: 0x%08x\n", val);
		else
			printk("Could not read board type\n");
		if (netxen_rom_fast_read(adapter, NETXEN_BOARDNUM, &val) == 0)
			printk("P2 ROM board  num: 0x%08x\n", val);
		else
			printk("Could not read board number\n");
		if (netxen_rom_fast_read(adapter, NETXEN_CHIPNUM, &val) == 0)
			printk("P2 ROM chip   num: 0x%08x\n", val);
		else
			printk("Could not read chip number\n");
	}

	if (netxen_rom_fast_read(adapter, 0, &n) == 0
	    && (n & NETXEN_ROM_FIRST_BARRIER)) {
		n &= ~NETXEN_ROM_ROUNDUP;
		if (n < NETXEN_ROM_FOUND_INIT) {
			if (verbose)
				printk("%s: %d CRB init values found"
				       " in ROM.\n", netxen_nic_driver_name, n);
		} else {
			printk("%s:n=0x%x Error! NetXen card flash not"
			       " initialized.\n", __FUNCTION__, n);
			return -EIO;
		}
		buf = kcalloc(n, sizeof(struct crb_addr_pair), GFP_KERNEL);
		if (buf == NULL) {
			printk("%s: netxen_pinit_from_rom: Unable to calloc "
			       "memory.\n", netxen_nic_driver_name);
			return -ENOMEM;
		}
		for (i = 0; i < n; i++) {
			if (netxen_rom_fast_read(adapter, 8 * i + 4, &val) != 0
			    || netxen_rom_fast_read(adapter, 8 * i + 8,
						    &addr) != 0)
				return -EIO;

			buf[i].addr = addr;
			buf[i].data = val;

			if (verbose)
				printk("%s: PCI:     0x%08x == 0x%08x\n",
				       netxen_nic_driver_name, (unsigned int)
				       netxen_decode_crb_addr(addr), val);
		}
		for (i = 0; i < n; i++) {

			off = netxen_decode_crb_addr(buf[i].addr);
			if (off == NETXEN_ADDR_ERROR) {
				printk(KERN_ERR"CRB init value out of range %x\n",
					buf[i].addr);
				continue;
			}
			off += NETXEN_PCI_CRBSPACE;
			/* skipping cold reboot MAGIC */
			if (off == NETXEN_CAM_RAM(0x1fc))
				continue;

			/* After writing this register, HW needs time for CRB */
			/* to quiet down (else crb_window returns 0xffffffff) */
			if (off == NETXEN_ROMUSB_GLB_SW_RESET) {
				init_delay = 1;
				/* hold xdma in reset also */
				buf[i].data = NETXEN_NIC_XDMA_RESET;
			}

			if (ADDR_IN_WINDOW1(off)) {
				writel(buf[i].data,
				       NETXEN_CRB_NORMALIZE(adapter, off));
			} else {
				netxen_nic_pci_change_crbwindow(adapter, 0);
				writel(buf[i].data,
				       pci_base_offset(adapter, off));

				netxen_nic_pci_change_crbwindow(adapter, 1);
			}
			if (init_delay == 1) {
				msleep(2000);
				init_delay = 0;
			}
			msleep(20);
		}
		kfree(buf);

		/* disable_peg_cache_all */

		/* unreset_net_cache */
		netxen_nic_hw_read_wx(adapter, NETXEN_ROMUSB_GLB_SW_RESET, &val,
				      4);
		netxen_crb_writelit_adapter(adapter, NETXEN_ROMUSB_GLB_SW_RESET,
					    (val & 0xffffff0f));
		/* p2dn replyCount */
		netxen_crb_writelit_adapter(adapter,
					    NETXEN_CRB_PEG_NET_D + 0xec, 0x1e);
		/* disable_peg_cache 0 */
		netxen_crb_writelit_adapter(adapter,
					    NETXEN_CRB_PEG_NET_D + 0x4c, 8);
		/* disable_peg_cache 1 */
		netxen_crb_writelit_adapter(adapter,
					    NETXEN_CRB_PEG_NET_I + 0x4c, 8);

		/* peg_clr_all */

		/* peg_clr 0 */
		netxen_crb_writelit_adapter(adapter, NETXEN_CRB_PEG_NET_0 + 0x8,
					    0);
		netxen_crb_writelit_adapter(adapter, NETXEN_CRB_PEG_NET_0 + 0xc,
					    0);
		/* peg_clr 1 */
		netxen_crb_writelit_adapter(adapter, NETXEN_CRB_PEG_NET_1 + 0x8,
					    0);
		netxen_crb_writelit_adapter(adapter, NETXEN_CRB_PEG_NET_1 + 0xc,
					    0);
		/* peg_clr 2 */
		netxen_crb_writelit_adapter(adapter, NETXEN_CRB_PEG_NET_2 + 0x8,
					    0);
		netxen_crb_writelit_adapter(adapter, NETXEN_CRB_PEG_NET_2 + 0xc,
					    0);
		/* peg_clr 3 */
		netxen_crb_writelit_adapter(adapter, NETXEN_CRB_PEG_NET_3 + 0x8,
					    0);
		netxen_crb_writelit_adapter(adapter, NETXEN_CRB_PEG_NET_3 + 0xc,
					    0);
	}
	return 0;
}

int netxen_initialize_adapter_offload(struct netxen_adapter *adapter)
{
	uint64_t addr;
	uint32_t hi;
	uint32_t lo;

	adapter->dummy_dma.addr =
	    pci_alloc_consistent(adapter->ahw.pdev,
				 NETXEN_HOST_DUMMY_DMA_SIZE,
				 &adapter->dummy_dma.phys_addr);
	if (adapter->dummy_dma.addr == NULL) {
		printk("%s: ERROR: Could not allocate dummy DMA memory\n",
		       __FUNCTION__);
		return -ENOMEM;
	}

	addr = (uint64_t) adapter->dummy_dma.phys_addr;
	hi = (addr >> 32) & 0xffffffff;
	lo = addr & 0xffffffff;

	writel(hi, NETXEN_CRB_NORMALIZE(adapter, CRB_HOST_DUMMY_BUF_ADDR_HI));
	writel(lo, NETXEN_CRB_NORMALIZE(adapter, CRB_HOST_DUMMY_BUF_ADDR_LO));

	return 0;
}

void netxen_free_adapter_offload(struct netxen_adapter *adapter)
{
	if (adapter->dummy_dma.addr) {
		pci_free_consistent(adapter->ahw.pdev,
				    NETXEN_HOST_DUMMY_DMA_SIZE,
				    adapter->dummy_dma.addr,
				    adapter->dummy_dma.phys_addr);
		adapter->dummy_dma.addr = NULL;
	}
}

int netxen_phantom_init(struct netxen_adapter *adapter, int pegtune_val)
{
	u32 val = 0;
	int retries = 30;

	if (!pegtune_val) {
		do {
			val = readl(NETXEN_CRB_NORMALIZE
				  (adapter, CRB_CMDPEG_STATE));
			pegtune_val = readl(NETXEN_CRB_NORMALIZE
				  (adapter, NETXEN_ROMUSB_GLB_PEGTUNE_DONE));

			if (val == PHAN_INITIALIZE_COMPLETE ||
				val == PHAN_INITIALIZE_ACK)
				return 0;

			msleep(1000);
		} while (--retries);
		if (!retries) {
			printk(KERN_WARNING "netxen_phantom_init: init failed, "
					"pegtune_val=%x\n", pegtune_val);
			return -1;
		}
	}

	return 0;
}

int netxen_nic_rx_has_work(struct netxen_adapter *adapter)
{
	int ctx;

	for (ctx = 0; ctx < MAX_RCV_CTX; ++ctx) {
		struct netxen_recv_context *recv_ctx =
		    &(adapter->recv_ctx[ctx]);
		u32 consumer;
		struct status_desc *desc_head;
		struct status_desc *desc;

		consumer = recv_ctx->status_rx_consumer;
		desc_head = recv_ctx->rcv_status_desc_head;
		desc = &desc_head[consumer];

		if (netxen_get_sts_owner(desc) & STATUS_OWNER_HOST)
			return 1;
	}

	return 0;
}

static inline int netxen_nic_check_temp(struct netxen_adapter *adapter)
{
	struct net_device *netdev = adapter->netdev;
	uint32_t temp, temp_state, temp_val;
	int rv = 0;

	temp = readl(NETXEN_CRB_NORMALIZE(adapter, CRB_TEMP_STATE));

	temp_state = nx_get_temp_state(temp);
	temp_val = nx_get_temp_val(temp);

	if (temp_state == NX_TEMP_PANIC) {
		printk(KERN_ALERT
		       "%s: Device temperature %d degrees C exceeds"
		       " maximum allowed. Hardware has been shut down.\n",
		       netxen_nic_driver_name, temp_val);

		netif_carrier_off(netdev);
		netif_stop_queue(netdev);
		rv = 1;
	} else if (temp_state == NX_TEMP_WARN) {
		if (adapter->temp == NX_TEMP_NORMAL) {
			printk(KERN_ALERT
			       "%s: Device temperature %d degrees C "
			       "exceeds operating range."
			       " Immediate action needed.\n",
			       netxen_nic_driver_name, temp_val);
		}
	} else {
		if (adapter->temp == NX_TEMP_WARN) {
			printk(KERN_INFO
			       "%s: Device temperature is now %d degrees C"
			       " in normal range.\n", netxen_nic_driver_name,
			       temp_val);
		}
	}
	adapter->temp = temp_state;
	return rv;
}

void netxen_watchdog_task(struct work_struct *work)
{
	struct net_device *netdev;
	struct netxen_adapter *adapter =