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Date: Tue, 13 Oct 2009 08:31:42 -0700
From: Dhananjay Phadke <dhananjay@...xen.com>
To: davem@...emloft.net
Cc: netdev@...r.kernel.org, ameen.rahman@...gic.com
Subject: [PATCH NEXT 2/5] 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: Dhananjay Phadke <dhananjay@...xen.com>
---
drivers/net/netxen/netxen_nic.h | 11 +-
drivers/net/netxen/netxen_nic_hw.c | 221 +++++++++++++++-------------------
drivers/net/netxen/netxen_nic_main.c | 24 ++---
3 files changed, 112 insertions(+), 144 deletions(-)
diff --git a/drivers/net/netxen/netxen_nic.h b/drivers/net/netxen/netxen_nic.h
index db5c8d2..eef9e66 100644
--- a/drivers/net/netxen/netxen_nic.h
+++ b/drivers/net/netxen/netxen_nic.h
@@ -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);
diff --git a/drivers/net/netxen/netxen_nic_hw.c b/drivers/net/netxen/netxen_nic_hw.c
index 5f4bdda..f677752 100644
--- a/drivers/net/netxen/netxen_nic_hw.c
+++ b/drivers/net/netxen/netxen_nic_hw.c
@@ -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
-netxen_nic_pci_set_window_2M(struct netxen_adapter *adapter,
- unsigned long long addr)
+static int
+netxen_nic_pci_set_window_128M(struct netxen_adapter *adapter,
+ u64 addr, u32 *start)
{
- int window;
- u32 win_read;
-
- 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;
+ 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_OCM0, NETXEN_ADDR_OCM0_MAX)) {
- if ((addr & 0x00ff800) == 0xff800) {
- printk("%s: QM access not handled.\n", __func__);
- addr = -1UL;
- }
+ NETXEN_ADDR_OCM1, NETXEN_ADDR_OCM1_MAX)) {
+ *start = (addr - NETXEN_ADDR_OCM1 + NETXEN_PCI_OCM1);
+ return 0;
+ }
- 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);
- if ((win_read >> 7) != window) {
- printk(KERN_INFO "%s: Written OCMwin (0x%x) != "
- "Read OCMwin (0x%x)\n",
- __func__, window, win_read);
- }
- addr = GET_MEM_OFFS_2M(addr) + NETXEN_PCI_OCM0_2M;
+ return -EIO;
+}
- } 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;
+static int
+netxen_nic_pci_set_window_2M(struct netxen_adapter *adapter,
+ u64 addr, u32 *start)
+{
+ u32 win_read, window;
+ struct pci_dev *pdev = adapter->pdev;
- } 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);
+ if ((addr & 0x00ff800) == 0xff800) {
+ if (printk_ratelimit())
+ dev_warn(&pdev->dev, "QM access not handled\n");
+ return -EIO;
+ }
+
+ window = OCM_WIN(addr);
+ writel(window, adapter->ahw.ocm_win_crb);
+ win_read = readl(adapter->ahw.ocm_win_crb);
+ if ((win_read >> 7) != window) {
+ if (printk_ratelimit())
+ dev_warn(&pdev->dev, "failed to set OCM window\n");
+ return -EIO;
+ }
+
+ 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:
diff --git a/drivers/net/netxen/netxen_nic_main.c b/drivers/net/netxen/netxen_nic_main.c
index f6aea3e..3e96c5e 100644
--- a/drivers/net/netxen/netxen_nic_main.c
+++ b/drivers/net/netxen/netxen_nic_main.c
@@ -608,13 +608,11 @@ 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) {
@@ -623,6 +621,7 @@ 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 -
@@ -635,19 +634,6 @@ 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;
}
@@ -661,6 +647,11 @@ 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;
@@ -1448,6 +1439,7 @@ 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) {
--
1.6.0.2
--
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