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Re: [PATCH 2.6.10-rc1 7/15] wireless/orinoco: Update card reset/init cod

To: Dan Williams <dcbw@xxxxxxxxxx>
Subject: Re: [PATCH 2.6.10-rc1 7/15] wireless/orinoco: Update card reset/init code and add card-specific data structures
From: Jeff Garzik <jgarzik@xxxxxxxxx>
Date: Tue, 26 Oct 2004 15:43:20 -0400
Cc: netdev@xxxxxxxxxxx, jgarzik@xxxxxxxxxx, hermes@xxxxxxxxxxxxxxxxxxxxx
In-reply-to: <1098816980.3663.62.camel@dcbw.boston.redhat.com>
References: <1098814320.3663.24.camel@dcbw.boston.redhat.com> <1098816980.3663.62.camel@dcbw.boston.redhat.com>
Sender: netdev-bounce@xxxxxxxxxxx
User-agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.3) Gecko/20040922
Dan Williams wrote:
+/* Orinoco PCI specific data */
+struct orinoco_pci_card {
+       u32 pci_state[16];      /* PCI suspend/resume state */
+};

no need with GregKH's latest upstream changes



-       printk(KERN_NOTICE "Reset done");
        timeout = jiffies + (HERMES_PCI_COR_ONT * HZ / 1000);
-       while(time_before(jiffies, timeout)) {
-               printk(".");
+       while(time_before(jiffies, timeout))
                mdelay(1);


the loop is non-sensical... at this point use msleep() or actually mdelay() for the correct period, rather than looping on mdelay(1)


-       printk(KERN_NOTICE "Clear Reset");
        timeout = jiffies + (HERMES_PCI_COR_OFFT * HZ / 1000);
-       while(time_before(jiffies, timeout)) {
-               printk(".");
+       while(time_before(jiffies, timeout))
                mdelay(1);
-       }
-       printk(";\n");
-       //mdelay(HERMES_PCI_COR_OFFT);

ditto


@@ -199,61 +194,68 @@
u16 *pci_ioaddr = NULL;
unsigned long pci_iolen;
struct orinoco_private *priv = NULL;
+ struct orinoco_pci_card *card;
struct net_device *dev = NULL;
err = pci_enable_device(pdev);
- if (err)
- return -EIO;
+ if (err) {
+ printk(KERN_ERR PFX "Cannot enable PCI device\n");
+ return -err;
+ }

incorrect... err is already negative.


@@ -325,6 +327,9 @@

orinoco_unlock(priv, &flags);
+ pci_save_state(pdev, card->pci_state);
+ pci_set_power_state(pdev, 3);
+
return 0;
}
@@ -332,11 +337,15 @@
{
struct net_device *dev = pci_get_drvdata(pdev);
struct orinoco_private *priv = netdev_priv(dev);
+ struct orinoco_pci_card *card = priv->card;
unsigned long flags;
int err;
printk(KERN_DEBUG "%s: Orinoco-PCI waking up\n", dev->name);
+ pci_set_power_state(pdev, 0);
+ pci_restore_state(pdev, card->pci_state);
+
err = orinoco_reinit_firmware(dev);
if (err) {
printk(KERN_ERR "%s: Error %d re-initializing firmware on orinoco_pci_resume()\n",

These two don't build in the latest 2.6.x kernel.



--- a/drivers/net/wireless/orinoco_plx.c.7-card-data 2004-10-26 09:52:13.354269904 -0400
+++ b/drivers/net/wireless/orinoco_plx.c 2004-10-26 10:07:51.854596168 -0400
@@ -142,146 +142,189 @@
#include "hermes.h"
#include "orinoco.h"
-#define COR_OFFSET (0x3e0/2) /* COR attribute offset of Prism2 PC card */
+#define COR_OFFSET (0x3e0) /* COR attribute offset of Prism2 PC card */
#define COR_VALUE (COR_LEVEL_REQ | COR_FUNC_ENA) /* Enable PC card with interrupt in level trigger */
+#define COR_RESET (0x80) /* reset bit in the COR register */
+#define PLX_RESET_TIME (500) /* milliseconds */
#define PLX_INTCSR 0x4c /* Interrupt Control & Status Register */
#define PLX_INTCSR_INTEN (1<<6) /* Interrupt Enable bit */
-static const u16 cis_magic[] = {
- 0x0001, 0x0003, 0x0000, 0x0000, 0x00ff, 0x0017, 0x0004, 0x0067
+static const u8 cis_magic[] = {
+ 0x01, 0x03, 0x00, 0x00, 0xff, 0x17, 0x04, 0x67
};
+/* Orinoco PLX specific data */
+struct orinoco_plx_card {
+ u8 *attr_mem;
+};
+
+/*
+ * Do a soft reset of the card using the Configuration Option Register
+ */
+static int orinoco_plx_cor_reset(struct orinoco_private *priv)
+{
+ hermes_t *hw = &priv->hw;
+ struct orinoco_plx_card *card = priv->card;
+ u8 *attr_mem = card->attr_mem;
+ unsigned long timeout;
+ u16 reg;
+
+ attr_mem[COR_OFFSET] = COR_VALUE | COR_RESET;
+ mdelay(1);
+
+ attr_mem[COR_OFFSET] = COR_VALUE;
+ mdelay(1);
+
+ /* Just in case, wait more until the card is no longer busy */
+ timeout = jiffies + (PLX_RESET_TIME * HZ / 1000);
+ reg = hermes_read_regn(hw, CMD);
+ while (time_before(jiffies, timeout) && (reg & HERMES_CMD_BUSY)) {
+ mdelay(1);
+ reg = hermes_read_regn(hw, CMD);
+ }
+
+ /* Did we timeout ? */
+ if (reg & HERMES_CMD_BUSY) {
+ printk(KERN_ERR PFX "Busy timeout\n");
+ return -ETIMEDOUT;
+ }
+
+ return 0;
+}
+
+
static int orinoco_plx_init_one(struct pci_dev *pdev,
const struct pci_device_id *ent)
{
int err = 0;
- u16 *attr_mem = NULL;
- u32 reg, addr;
+ u8 *attr_mem = NULL;
+ u32 csr_reg, plx_addr;
struct orinoco_private *priv = NULL;
+ struct orinoco_plx_card *card;
unsigned long pccard_ioaddr = 0;
unsigned long pccard_iolen = 0;
struct net_device *dev = NULL;
int i;
err = pci_enable_device(pdev);
- if (err)
- return -EIO;
-
- /* Resource 2 is mapped to the PCMCIA space */
- attr_mem = ioremap(pci_resource_start(pdev, 2), PAGE_SIZE);
- if (! attr_mem)
- goto fail;
-
- printk(KERN_DEBUG "orinoco_plx: CIS: ");
- for (i = 0; i < 16; i++) {
- printk("%02X:", (int)attr_mem[i]);
+ if (err) {
+ printk(KERN_ERR PFX "Cannot enable PCI device\n");
+ return -err;

ditto earlier comment, same bug here


@@ -332,6 +374,8 @@
        .id_table       = orinoco_plx_pci_id_table,
        .probe          = orinoco_plx_init_one,
        .remove         = __devexit_p(orinoco_plx_remove_one),
+       .suspend        = 0,
+       .resume         = 0,
 };

superfluous change


+ * Do a soft reset of the card using the Configuration Option Register
+ */
+static int orinoco_tmd_cor_reset(struct orinoco_private *priv)
+{
+       hermes_t *hw = &priv->hw;
+       struct orinoco_tmd_card *card = priv->card;
+       u32 addr = card->tmd_io;
+       unsigned long timeout;
+       u16 reg;
+
+       outb(COR_VALUE | COR_RESET, addr);
+       mdelay(1);
+
+       outb(COR_VALUE, addr);
+       mdelay(1);

PCI posting bugs?


+       /* Just in case, wait more until the card is no longer busy */
+       timeout = jiffies + (TMD_RESET_TIME * HZ / 1000);
+       reg = hermes_read_regn(hw, CMD);
+       while (time_before(jiffies, timeout) && (reg & HERMES_CMD_BUSY)) {
+               mdelay(1);
+               reg = hermes_read_regn(hw, CMD);
+       }

max delay without sleep way too long



        err = pci_enable_device(pdev);
-       if (err)
-               return -EIO;
-
-       printk(KERN_DEBUG PFX "TMD setup\n");
-       pccard_ioaddr = pci_resource_start(pdev, 2);
-       pccard_iolen = pci_resource_len(pdev, 2);
-       if (! request_region(pccard_ioaddr, pccard_iolen, DRIVER_NAME)) {
-               printk(KERN_ERR PFX "I/O resource at 0x%lx len 0x%lx busy\n",
-                       pccard_ioaddr, pccard_iolen);
-               pccard_ioaddr = 0;
-               err = -EBUSY;
-               goto fail;
+       if (err) {
+               printk(KERN_ERR PFX "Cannot enable PCI device\n");
+               return -err;

same bug yet again



@@ -200,6 +232,8 @@
        .id_table       = orinoco_tmd_pci_id_table,
        .probe          = orinoco_tmd_init_one,
        .remove         = __devexit_p(orinoco_tmd_remove_one),
+       .suspend        = 0,
+       .resume         = 0,

superfluous


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