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Commit 47abe356 authored by Dhananjay Phadke's avatar Dhananjay Phadke Committed by David S. Miller
Browse files

netxen: add access to on chip memory for tools 



Add access to on chip memory, this is used by
debug and diagnostic tools only.

Signed-off-by: default avatarDhananjay Phadke <dhananjay@netxen.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 1f5e055d

drivers/net/netxen/netxen_nic.h

+5 −6
Original line number Diff line number Diff line
@@ -543,13 +543,13 @@ struct netxen_hardware_context { 
	void __iomem *pci_base1;

	void __iomem *pci_base2;

	void __iomem *db_base;

	void __iomem *ocm_win_crb;



	unsigned long db_len;

	unsigned long pci_len0;



	int qdr_sn_window;

	int ddr_mn_window;

	u32 mn_win_crb;

	u32 ms_win_crb;

	u32 ocm_win;

	u32 resv1;



	u8 cut_through;

	u8 revision_id;
@@ -1183,8 +1183,7 @@ struct netxen_adapter { 
	int (*pci_mem_read)(struct netxen_adapter *, u64, u64 *);

	int (*pci_mem_write)(struct netxen_adapter *, u64, u64);



	unsigned long (*pci_set_window)(struct netxen_adapter *,

			unsigned long long);

	int (*pci_set_window)(struct netxen_adapter *, u64, u32 *);



	u32 (*io_read)(struct netxen_adapter *, void __iomem *);

	void (*io_write)(struct netxen_adapter *, void __iomem *, u32);

drivers/net/netxen/netxen_nic_hw.c

+99 −122
Original line number Diff line number Diff line
@@ -1274,72 +1274,6 @@ netxen_nic_hw_read_wx_2M(struct netxen_adapter *adapter, ulong off) 
	return data;

}



static int netxen_pci_set_window_warning_count;



static unsigned long

netxen_nic_pci_set_window_128M(struct netxen_adapter *adapter,

		unsigned long long addr)

{

	void __iomem *offset;

	int window;

	unsigned long long	qdr_max;

	uint8_t func = adapter->ahw.pci_func;



	if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {

		qdr_max = NETXEN_ADDR_QDR_NET_MAX_P2;

	} else {

		qdr_max = NETXEN_ADDR_QDR_NET_MAX_P3;

	}



	if (ADDR_IN_RANGE(addr, NETXEN_ADDR_DDR_NET, NETXEN_ADDR_DDR_NET_MAX)) {

		/* DDR network side */

		addr -= NETXEN_ADDR_DDR_NET;

		window = (addr >> 25) & 0x3ff;

		if (adapter->ahw.ddr_mn_window != window) {

			adapter->ahw.ddr_mn_window = window;

			offset = PCI_OFFSET_SECOND_RANGE(adapter,

				NETXEN_PCIX_PH_REG(PCIE_MN_WINDOW_REG(func)));

			writel(window, offset);

			/* MUST make sure window is set before we forge on... */

			readl(offset);

		}

		addr -= (window * NETXEN_WINDOW_ONE);

		addr += NETXEN_PCI_DDR_NET;

	} else if (ADDR_IN_RANGE(addr, NETXEN_ADDR_OCM0, NETXEN_ADDR_OCM0_MAX)) {

		addr -= NETXEN_ADDR_OCM0;

		addr += NETXEN_PCI_OCM0;

	} else if (ADDR_IN_RANGE(addr, NETXEN_ADDR_OCM1, NETXEN_ADDR_OCM1_MAX)) {

		addr -= NETXEN_ADDR_OCM1;

		addr += NETXEN_PCI_OCM1;

	} else if (ADDR_IN_RANGE(addr, NETXEN_ADDR_QDR_NET, qdr_max)) {

		/* QDR network side */

		addr -= NETXEN_ADDR_QDR_NET;

		window = (addr >> 22) & 0x3f;

		if (adapter->ahw.qdr_sn_window != window) {

			adapter->ahw.qdr_sn_window = window;

			offset = PCI_OFFSET_SECOND_RANGE(adapter,

				NETXEN_PCIX_PH_REG(PCIE_SN_WINDOW_REG(func)));

			writel((window << 22), offset);

			/* MUST make sure window is set before we forge on... */

			readl(offset);

		}

		addr -= (window * 0x400000);

		addr += NETXEN_PCI_QDR_NET;

	} else {

		/*

		 * peg gdb frequently accesses memory that doesn't exist,

		 * this limits the chit chat so debugging isn't slowed down.

		 */

		if ((netxen_pci_set_window_warning_count++ < 8)

		    || (netxen_pci_set_window_warning_count % 64 == 0))

			printk("%s: Warning:netxen_nic_pci_set_window()"

			       " Unknown address range!\n",

			       netxen_nic_driver_name);

		addr = -1UL;

	}

	return addr;

}



/* window 1 registers only */

static void netxen_nic_io_write_128M(struct netxen_adapter *adapter,

		void __iomem *addr, u32 data)
@@ -1389,69 +1323,90 @@ netxen_get_ioaddr(struct netxen_adapter *adapter, u32 offset) 
	return (void __iomem *)off;

}



static unsigned long

static int

netxen_nic_pci_set_window_128M(struct netxen_adapter *adapter,

		u64 addr, u32 *start)

{

	if (ADDR_IN_RANGE(addr, NETXEN_ADDR_OCM0, NETXEN_ADDR_OCM0_MAX)) {

		*start = (addr - NETXEN_ADDR_OCM0  + NETXEN_PCI_OCM0);

		return 0;

	} else if (ADDR_IN_RANGE(addr,

				NETXEN_ADDR_OCM1, NETXEN_ADDR_OCM1_MAX)) {

		*start = (addr - NETXEN_ADDR_OCM1 + NETXEN_PCI_OCM1);

		return 0;

	}



	return -EIO;

}



static int

netxen_nic_pci_set_window_2M(struct netxen_adapter *adapter,

		unsigned long long addr)

		u64 addr, u32 *start)

{

	int window;

	u32 win_read;

	u32 win_read, window;

	struct pci_dev *pdev = adapter->pdev;



	if (ADDR_IN_RANGE(addr, NETXEN_ADDR_DDR_NET, NETXEN_ADDR_DDR_NET_MAX)) {

		/* DDR network side */

		window = MN_WIN(addr);

		adapter->ahw.ddr_mn_window = window;

		NXWR32(adapter, adapter->ahw.mn_win_crb, window);

		win_read = NXRD32(adapter, adapter->ahw.mn_win_crb);

		if ((win_read << 17) != window) {

			printk(KERN_INFO "Written MNwin (0x%x) != "

				"Read MNwin (0x%x)\n", window, win_read);

		}

		addr = GET_MEM_OFFS_2M(addr) + NETXEN_PCI_DDR_NET;

	} else if (ADDR_IN_RANGE(addr,

				NETXEN_ADDR_OCM0, NETXEN_ADDR_OCM0_MAX)) {

	if ((addr & 0x00ff800) == 0xff800) {

			printk("%s: QM access not handled.\n", __func__);

			addr = -1UL;

		if (printk_ratelimit())

			dev_warn(&pdev->dev, "QM access not handled\n");

		return -EIO;

	}



	window = OCM_WIN(addr);

		adapter->ahw.ddr_mn_window = window;

		NXWR32(adapter, adapter->ahw.mn_win_crb, window);

		win_read = NXRD32(adapter, adapter->ahw.mn_win_crb);

	writel(window, adapter->ahw.ocm_win_crb);

	win_read = readl(adapter->ahw.ocm_win_crb);

	if ((win_read >> 7) != window) {

			printk(KERN_INFO "%s: Written OCMwin (0x%x) != "

					"Read OCMwin (0x%x)\n",

					__func__, window, win_read);

		if (printk_ratelimit())

			dev_warn(&pdev->dev, "failed to set OCM window\n");

		return -EIO;

	}

		addr = GET_MEM_OFFS_2M(addr) + NETXEN_PCI_OCM0_2M;



	} else if (ADDR_IN_RANGE(addr,

			NETXEN_ADDR_QDR_NET, NETXEN_ADDR_QDR_NET_MAX_P3)) {

		/* QDR network side */

		window = MS_WIN(addr);

		adapter->ahw.qdr_sn_window = window;

		NXWR32(adapter, adapter->ahw.ms_win_crb, window);

		win_read = NXRD32(adapter, adapter->ahw.ms_win_crb);

		if (win_read != window) {

			printk(KERN_INFO "%s: Written MSwin (0x%x) != "

					"Read MSwin (0x%x)\n",

					__func__, window, win_read);

		}

		addr = GET_MEM_OFFS_2M(addr) + NETXEN_PCI_QDR_NET;



	} else {

		/*

		 * peg gdb frequently accesses memory that doesn't exist,

		 * this limits the chit chat so debugging isn't slowed down.

		 */

		if ((netxen_pci_set_window_warning_count++ < 8)

			|| (netxen_pci_set_window_warning_count%64 == 0)) {

			printk("%s: Warning:%s Unknown address range!\n",

					__func__, netxen_nic_driver_name);

	adapter->ahw.ocm_win = window;

	*start = NETXEN_PCI_OCM0_2M + GET_MEM_OFFS_2M(addr);

	return 0;

}

		addr = -1UL;



static int

netxen_nic_pci_mem_access_direct(struct netxen_adapter *adapter, u64 off,

		u64 *data, int op)

{

	void __iomem *addr, *mem_ptr = NULL;

	resource_size_t mem_base;

	unsigned long flags;

	int ret = -EIO;

	u32 start;



	write_lock_irqsave(&adapter->adapter_lock, flags);



	ret = adapter->pci_set_window(adapter, off, &start);

	if (ret != 0)

		goto unlock;



	addr = pci_base_offset(adapter, start);

	if (addr)

		goto noremap;



	mem_base = pci_resource_start(adapter->pdev, 0) + (start & PAGE_MASK);



	mem_ptr = ioremap(mem_base, PAGE_SIZE);

	if (mem_ptr == NULL) {

		ret = -EIO;

		goto unlock;

	}

	return addr;



	addr = mem_ptr + (start & (PAGE_SIZE - 1));



noremap:

	if (op == 0)	/* read */

		*data = readq(addr);

	else		/* write */

		writeq(*data, addr);



unlock:

	write_unlock_irqrestore(&adapter->adapter_lock, flags);

	if (mem_ptr)

		iounmap(mem_ptr);

	return ret;

}



#define MAX_CTL_CHECK   1000
@@ -1493,6 +1448,14 @@ netxen_nic_pci_mem_write_128M(struct netxen_adapter *adapter, 
		goto correct;

	}



	if (ADDR_IN_RANGE(off, NETXEN_ADDR_OCM0, NETXEN_ADDR_OCM0_MAX) ||

		ADDR_IN_RANGE(off, NETXEN_ADDR_OCM1, NETXEN_ADDR_OCM1_MAX)) {

		if (adapter->ahw.pci_len0 != 0) {

			return netxen_nic_pci_mem_access_direct(adapter,

					off, &data, 1);

		}

	}



	return -EIO;



correct:
@@ -1564,6 +1527,14 @@ netxen_nic_pci_mem_read_128M(struct netxen_adapter *adapter, 
		goto correct;

	}



	if (ADDR_IN_RANGE(off, NETXEN_ADDR_OCM0, NETXEN_ADDR_OCM0_MAX) ||

		ADDR_IN_RANGE(off, NETXEN_ADDR_OCM1, NETXEN_ADDR_OCM1_MAX)) {

		if (adapter->ahw.pci_len0 != 0) {

			return netxen_nic_pci_mem_access_direct(adapter,

					off, data, 0);

		}

	}



	return -EIO;



correct:
@@ -1628,6 +1599,9 @@ netxen_nic_pci_mem_write_2M(struct netxen_adapter *adapter, 
		goto correct;

	}



	if (ADDR_IN_RANGE(off, NETXEN_ADDR_OCM0, NETXEN_ADDR_OCM0_MAX))

		return netxen_nic_pci_mem_access_direct(adapter, off, &data, 1);



	return -EIO;



correct:
@@ -1690,6 +1664,9 @@ netxen_nic_pci_mem_read_2M(struct netxen_adapter *adapter, 
		goto correct;

	}



	if (ADDR_IN_RANGE(off, NETXEN_ADDR_OCM0, NETXEN_ADDR_OCM0_MAX))

		return netxen_nic_pci_mem_access_direct(adapter, off, data, 0);



	return -EIO;



correct:

drivers/net/netxen/netxen_nic_main.c

+8 −16
Original line number Diff line number Diff line
@@ -607,13 +607,11 @@ netxen_setup_pci_map(struct netxen_adapter *adapter) 
	 * accessed it should set the window to 0 and then reset it to 1.

	 */

	adapter->curr_window = 255;

	adapter->ahw.qdr_sn_window = -1;

	adapter->ahw.ddr_mn_window = -1;

	adapter->ahw.ocm_win = -1;



	/* remap phys address */

	mem_base = pci_resource_start(pdev, 0);	/* 0 is for BAR 0 */

	mem_len = pci_resource_len(pdev, 0);

	pci_len0 = 0;



	/* 128 Meg of memory */

	if (mem_len == NETXEN_PCI_128MB_SIZE) {
@@ -622,6 +620,7 @@ netxen_setup_pci_map(struct netxen_adapter *adapter) 
				SECOND_PAGE_GROUP_SIZE);

		mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START,

				THIRD_PAGE_GROUP_SIZE);

		pci_len0 = FIRST_PAGE_GROUP_SIZE;

	} else if (mem_len == NETXEN_PCI_32MB_SIZE) {

		mem_ptr1 = ioremap(mem_base, SECOND_PAGE_GROUP_SIZE);

		mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START -
@@ -634,19 +633,6 @@ netxen_setup_pci_map(struct netxen_adapter *adapter) 
			return -EIO;

		}

		pci_len0 = mem_len;



		adapter->ahw.ddr_mn_window = 0;

		adapter->ahw.qdr_sn_window = 0;



		adapter->ahw.mn_win_crb = NETXEN_PCI_CRBSPACE +

			0x100000 + PCIX_MN_WINDOW + (pci_func * 0x20);

		adapter->ahw.ms_win_crb = NETXEN_PCI_CRBSPACE +

			0x100000 + PCIX_SN_WINDOW;

		if (pci_func < 4)

			adapter->ahw.ms_win_crb += (pci_func * 0x20);

		else

			adapter->ahw.ms_win_crb +=

					0xA0 + ((pci_func - 4) * 0x10);

	} else {

		return -EIO;

	}
@@ -660,6 +646,11 @@ netxen_setup_pci_map(struct netxen_adapter *adapter) 
	adapter->ahw.pci_base1 = mem_ptr1;

	adapter->ahw.pci_base2 = mem_ptr2;



	if (!NX_IS_REVISION_P2(adapter->ahw.revision_id)) {

		adapter->ahw.ocm_win_crb = netxen_get_ioaddr(adapter,

			NETXEN_PCIX_PS_REG(PCIE_MN_WINDOW_REG(pci_func)));

	}



	if (NX_IS_REVISION_P3(adapter->ahw.revision_id))

		goto skip_doorbell;
@@ -1447,6 +1438,7 @@ netxen_nic_resume(struct pci_dev *pdev) 
		return err;



	adapter->curr_window = 255;

	adapter->ahw.ocm_win = -1;



	err = netxen_start_firmware(adapter);

	if (err) {