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-rw-r--r--cpu/mpc8260/pci.c371
-rw-r--r--cpu/mpc8260/traps.c42
2 files changed, 224 insertions, 189 deletions
diff --git a/cpu/mpc8260/pci.c b/cpu/mpc8260/pci.c
index b3a89f5..dc077ed 100644
--- a/cpu/mpc8260/pci.c
+++ b/cpu/mpc8260/pci.c
@@ -28,28 +28,28 @@
#include <pci.h>
#include <mpc8260.h>
#include <asm/m8260_pci.h>
-
+#include <asm/io.h>
/*
- * Local->PCI map (from CPU) controlled by
+ * Local->PCI map (from CPU) controlled by
* MPC826x master window
*
- * 0x80000000 - 0xBFFFFFFF CPU2PCI space PCIBR0
- * 0xF4000000 - 0xF7FFFFFF CPU2PCI space PCIBR1
+ * 0x80000000 - 0xBFFFFFFF CPU2PCI space PCIBR0
+ * 0xF4000000 - 0xF7FFFFFF CPU2PCI space PCIBR1
*
- * 0x80000000 - 0x9FFFFFFF 0x80000000 - 0x9FFFFFFF (Outbound ATU #1)
- * PCI Mem with prefetch
+ * 0x80000000 - 0x9FFFFFFF 0x80000000 - 0x9FFFFFFF (Outbound ATU #1)
+ * PCI Mem with prefetch
*
- * 0xA0000000 - 0xBFFFFFFF 0xA0000000 - 0xBFFFFFFF (Outbound ATU #2)
- * PCI Mem w/o prefetch
+ * 0xA0000000 - 0xBFFFFFFF 0xA0000000 - 0xBFFFFFFF (Outbound ATU #2)
+ * PCI Mem w/o prefetch
*
- * 0xF4000000 - 0xF7FFFFFF 0x00000000 - 0x03FFFFFF (Outbound ATU #3)
- * 32-bit PCI IO
+ * 0xF4000000 - 0xF7FFFFFF 0x00000000 - 0x03FFFFFF (Outbound ATU #3)
+ * 32-bit PCI IO
*
* PCI->Local map (from PCI)
- * MPC826x slave window controlled by
+ * MPC826x slave window controlled by
*
- * 0x00000000 - 0x1FFFFFFF 0x00000000 - 0x1FFFFFFF (Inbound ATU #1)
- * MPC826x local memory
+ * 0x00000000 - 0x1FFFFFFF 0x00000000 - 0x1FFFFFFF (Inbound ATU #1)
+ * MPC826x local memory
*/
/*
@@ -58,13 +58,13 @@
*/
#ifndef CFG_PCI_SLV_MEM_LOCAL
-#define PCI_SLV_MEM_LOCAL CFG_SDRAM_BASE /* Local base */
+#define PCI_SLV_MEM_LOCAL CFG_SDRAM_BASE /* Local base */
#else
#define PCI_SLV_MEM_LOCAL CFG_PCI_SLV_MEM_LOCAL
#endif
#ifndef CFG_PCI_SLV_MEM_BUS
-#define PCI_SLV_MEM_BUS 0x00000000 /* PCI base */
+#define PCI_SLV_MEM_BUS 0x00000000 /* PCI base */
#else
#define PCI_SLV_MEM_BUS CFG_PCI_SLV_MEM_BUS
#endif
@@ -85,28 +85,28 @@
/* PCIBR0 */
#ifndef CFG_PCI_MSTR0_LOCAL
-#define PCI_MSTR0_LOCAL 0x80000000 /* Local base */
+#define PCI_MSTR0_LOCAL 0x80000000 /* Local base */
#else
#define PCI_MSTR0_LOCAL CFG_PCI_MSTR0_LOCAL
#endif
#ifndef CFG_PCIMSK0_MASK
-#define PCIMSK0_MASK PCIMSK_1GB /* Size of window */
+#define PCIMSK0_MASK PCIMSK_1GB /* Size of window */
#else
#define PCIMSK0_MASK CFG_PCIMSK0_MASK
#endif
/* PCIBR1 */
#ifndef CFG_PCI_MSTR1_LOCAL
-#define PCI_MSTR1_LOCAL 0xF4000000 /* Local base */
+#define PCI_MSTR1_LOCAL 0xF4000000 /* Local base */
#else
#define PCI_MSTR1_LOCAL CFG_PCI_MSTR1_LOCAL
#endif
#ifndef CFG_PCIMSK1_MASK
-#define PCIMSK1_MASK PCIMSK_64MB /* Size of window */
+#define PCIMSK1_MASK PCIMSK_64MB /* Size of window */
#else
-#define PCIMSK1_MASK CFG_PCIMSK1_MASK
+#define PCIMSK1_MASK CFG_PCIMSK1_MASK
#endif
/*
@@ -116,13 +116,13 @@
*/
#ifndef CFG_PCI_MSTR_MEM_LOCAL
-#define PCI_MSTR_MEM_LOCAL 0x80000000 /* Local base */
+#define PCI_MSTR_MEM_LOCAL 0x80000000 /* Local base */
#else
#define PCI_MSTR_MEM_LOCAL CFG_PCI_MSTR_MEM_LOCAL
#endif
#ifndef CFG_PCI_MSTR_MEM_BUS
-#define PCI_MSTR_MEM_BUS 0x80000000 /* PCI base */
+#define PCI_MSTR_MEM_BUS 0x80000000 /* PCI base */
#else
#define PCI_MSTR_MEM_BUS CFG_PCI_MSTR_MEM_BUS
#endif
@@ -134,7 +134,7 @@
#endif
#ifndef CFG_PCI_MSTR_MEM_SIZE
-#define PCI_MSTR_MEM_SIZE 0x10000000 /* 256MB */
+#define PCI_MSTR_MEM_SIZE 0x10000000 /* 256MB */
#else
#define PCI_MSTR_MEM_SIZE CFG_PCI_MSTR_MEM_SIZE
#endif
@@ -152,13 +152,13 @@
*/
#ifndef CFG_PCI_MSTR_MEMIO_LOCAL
-#define PCI_MSTR_MEMIO_LOCAL 0x90000000 /* Local base */
+#define PCI_MSTR_MEMIO_LOCAL 0x90000000 /* Local base */
#else
#define PCI_MSTR_MEMIO_LOCAL CFG_PCI_MSTR_MEMIO_LOCAL
#endif
#ifndef CFG_PCI_MSTR_MEMIO_BUS
-#define PCI_MSTR_MEMIO_BUS 0x90000000 /* PCI base */
+#define PCI_MSTR_MEMIO_BUS 0x90000000 /* PCI base */
#else
#define PCI_MSTR_MEMIO_BUS CFG_PCI_MSTR_MEMIO_BUS
#endif
@@ -170,13 +170,13 @@
#endif
#ifndef CFG_PCI_MSTR_MEMIO_SIZE
-#define PCI_MSTR_MEMIO_SIZE 0x10000000 /* 256 MB */
+#define PCI_MSTR_MEMIO_SIZE 0x10000000 /* 256 MB */
#else
#define PCI_MSTR_MEMIO_SIZE CFG_PCI_MSTR_MEMIO_SIZE
#endif
#ifndef CFG_POCMR1_MASK_ATTRIB
-#define POCMR1_MASK_ATTRIB (POCMR_MASK_512MB | POCMR_ENABLE)
+#define POCMR1_MASK_ATTRIB (POCMR_MASK_512MB | POCMR_ENABLE)
#else
#define POCMR1_MASK_ATTRIB CFG_POCMR1_MASK_ATTRIB
#endif
@@ -188,13 +188,13 @@
*/
#ifndef CFG_PCI_MSTR_IO_LOCAL
-#define PCI_MSTR_IO_LOCAL 0xA0000000 /* Local base */
+#define PCI_MSTR_IO_LOCAL 0xA0000000 /* Local base */
#else
#define PCI_MSTR_IO_LOCAL CFG_PCI_MSTR_IO_LOCAL
#endif
#ifndef CFG_PCI_MSTR_IO_BUS
-#define PCI_MSTR_IO_BUS 0xA0000000 /* PCI base */
+#define PCI_MSTR_IO_BUS 0xA0000000 /* PCI base */
#else
#define PCI_MSTR_IO_BUS CFG_PCI_MSTR_IO_BUS
#endif
@@ -206,13 +206,13 @@
#endif
#ifndef CFG_PCI_MSTR_IO_SIZE
-#define PCI_MSTR_IO_SIZE 0x10000000 /* 256MB */
+#define PCI_MSTR_IO_SIZE 0x10000000 /* 256MB */
#else
#define PCI_MSTR_IO_SIZE CFG_PCI_MSTR_IO_SIZE
#endif
#ifndef CFG_POCMR2_MASK_ATTRIB
-#define POCMR2_MASK_ATTRIB (POCMR_MASK_256MB | POCMR_ENABLE | POCMR_PCI_IO)
+#define POCMR2_MASK_ATTRIB (POCMR_MASK_256MB | POCMR_ENABLE | POCMR_PCI_IO)
#else
#define POCMR2_MASK_ATTRIB CFG_POCMR2_MASK_ATTRIB
#endif
@@ -223,193 +223,198 @@
#define PCI_CLASS_BRIDGE_CTLR 0x06
-static inline void pci_outl(u32 addr, u32 data)
+static inline void pci_outl (u32 addr, u32 data)
{
- *(volatile u32 *) addr = cpu_to_le32(data);
+ *(volatile u32 *) addr = cpu_to_le32 (data);
}
-void pci_mpc8250_init(struct pci_controller *hose)
+void pci_mpc8250_init (struct pci_controller *hose)
{
#ifdef CONFIG_MPC8266ADS
- DECLARE_GLOBAL_DATA_PTR;
+ DECLARE_GLOBAL_DATA_PTR;
#endif
- u16 tempShort;
- u32 immr_addr = CFG_IMMR;
- volatile immap_t *immap = (immap_t *) CFG_IMMR;
- pci_dev_t host_devno = PCI_BDF(0, 0, 0);
+ u16 tempShort;
+
+ volatile immap_t *immap = (immap_t *) CFG_IMMR;
+ pci_dev_t host_devno = PCI_BDF (0, 0, 0);
- pci_setup_indirect(hose, CFG_IMMR + PCI_CFG_ADDR_REG,
- CFG_IMMR + PCI_CFG_DATA_REG);
+ pci_setup_indirect (hose, CFG_IMMR + PCI_CFG_ADDR_REG,
+ CFG_IMMR + PCI_CFG_DATA_REG);
- /*
- * Setting required to enable local bus for PCI (SIUMCR [LBPC]).
- */
+ /*
+ * Setting required to enable local bus for PCI (SIUMCR [LBPC]).
+ */
#ifdef CONFIG_MPC8266ADS
- immap->im_siu_conf.sc_siumcr = (immap->im_siu_conf.sc_siumcr & ~SIUMCR_LBPC11)
- | SIUMCR_LBPC01;
+ immap->im_siu_conf.sc_siumcr =
+ (immap->im_siu_conf.sc_siumcr & ~SIUMCR_LBPC11)
+ | SIUMCR_LBPC01;
#else
- /*
- * Setting required to enable IRQ1-IRQ7 (SIUMCR [DPPC]),
- * and local bus for PCI (SIUMCR [LBPC]).
- */
- immap->im_siu_conf.sc_siumcr = (immap->im_siu_conf.sc_siumcr &
- ~SIUMCR_LBPC11 &
+ /*
+ * Setting required to enable IRQ1-IRQ7 (SIUMCR [DPPC]),
+ * and local bus for PCI (SIUMCR [LBPC]).
+ */
+ immap->im_siu_conf.sc_siumcr = (immap->im_siu_conf.sc_siumcr &
+ ~SIUMCR_LBPC11 &
~SIUMCR_CS10PC11 &
- ~SIUMCR_LBPC11) |
- SIUMCR_LBPC01 |
- SIUMCR_CS10PC01 |
- SIUMCR_LBPC01;
+ ~SIUMCR_LBPC11) |
+ SIUMCR_LBPC01 |
+ SIUMCR_CS10PC01 |
+ SIUMCR_APPC10;
#endif
- /* Make PCI lowest priority */
- /* Each 4 bits is a device bus request and the MS 4bits
- is highest priority */
- /* Bus 4bit value
- --- ----------
- CPM high 0b0000
- CPM middle 0b0001
- CPM low 0b0010
- PCI reguest 0b0011
- Reserved 0b0100
- Reserved 0b0101
- Internal Core 0b0110
- External Master 1 0b0111
- External Master 2 0b1000
- External Master 3 0b1001
- The rest are reserved */
- immap->im_siu_conf.sc_ppc_alrh = 0x61207893;
-
- /* Park bus on core while modifying PCI Bus accesses */
- immap->im_siu_conf.sc_ppc_acr = 0x6;
-
- /*
- * Set up master windows that allow the CPU to access PCI space. These
- * windows are set up using the two SIU PCIBR registers.
- */
- *(volatile unsigned long*)(immr_addr + M8265_PCIMSK0) = PCIMSK0_MASK;
- *(volatile unsigned long*)(immr_addr + M8265_PCIBR0) =
- PCI_MSTR0_LOCAL | PCIBR_ENABLE;
+ /* Make PCI lowest priority */
+ /* Each 4 bits is a device bus request and the MS 4bits
+ is highest priority */
+ /* Bus 4bit value
+ --- ----------
+ CPM high 0b0000
+ CPM middle 0b0001
+ CPM low 0b0010
+ PCI reguest 0b0011
+ Reserved 0b0100
+ Reserved 0b0101
+ Internal Core 0b0110
+ External Master 1 0b0111
+ External Master 2 0b1000
+ External Master 3 0b1001
+ The rest are reserved */
+ immap->im_siu_conf.sc_ppc_alrh = 0x61207893;
+
+ /* Park bus on core while modifying PCI Bus accesses */
+ immap->im_siu_conf.sc_ppc_acr = 0x6;
+
+ /*
+ * Set up master windows that allow the CPU to access PCI space. These
+ * windows are set up using the two SIU PCIBR registers.
+ */
+ immap->im_memctl.memc_pcimsk0 = PCIMSK0_MASK;
+ immap->im_memctl.memc_pcibr0 = PCI_MSTR0_LOCAL | PCIBR_ENABLE;
#ifdef CONFIG_MPC8266ADS
- *(volatile unsigned long*)(immr_addr + M8265_PCIMSK1) = PCIMSK1_MASK;
- *(volatile unsigned long*)(immr_addr + M8265_PCIBR1) =
- PCI_MSTR1_LOCAL | PCIBR_ENABLE;
+ immap->im_memctl.memc_pcimsk0 = PCIMSK1_MASK;
+ immap->im_memctl.memc_pcibr0 = PCI_MSTR1_LOCAL | PCIBR_ENABLE;
#endif
- /* Release PCI RST (by default the PCI RST signal is held low) */
- pci_outl (immr_addr | PCI_GCR_REG, PCIGCR_PCI_BUS_EN);
+ /* Release PCI RST (by default the PCI RST signal is held low) */
+ immap->im_pci.pci_gcr = cpu_to_le32 (PCIGCR_PCI_BUS_EN);
- /* give it some time */
- {
+ /* give it some time */
+ {
#ifdef CONFIG_MPC8266ADS
/* Give the PCI cards more time to initialize before query
- This might be good for other boards also
- */
- int i;
- for (i = 0; i < 1000; ++i)
+ This might be good for other boards also
+ */
+ int i;
+
+ for (i = 0; i < 1000; ++i)
#endif
- udelay(1000);
- }
-
- /*
- * Set up master window that allows the CPU to access PCI Memory (prefetch)
- * space. This window is set up using the first set of Outbound ATU registers.
- */
- pci_outl (immr_addr | POTAR_REG0, PCI_MSTR_MEM_BUS >> 12); /* PCI base */
- pci_outl (immr_addr | POBAR_REG0, PCI_MSTR_MEM_LOCAL >> 12); /* Local base */
- pci_outl (immr_addr | POCMR_REG0, POCMR0_MASK_ATTRIB); /* Size & attribute */
-
- /*
- * Set up master window that allows the CPU to access PCI Memory (non-prefetch)
- * space. This window is set up using the second set of Outbound ATU registers.
- */
- pci_outl (immr_addr | POTAR_REG1, PCI_MSTR_MEMIO_BUS >> 12); /* PCI base */
- pci_outl (immr_addr | POBAR_REG1, PCI_MSTR_MEMIO_LOCAL >> 12); /* Local base */
- pci_outl (immr_addr | POCMR_REG1, POCMR1_MASK_ATTRIB); /* Size & attribute */
-
- /*
- * Set up master window that allows the CPU to access PCI IO space. This window
- * is set up using the third set of Outbound ATU registers.
- */
- pci_outl (immr_addr | POTAR_REG2, PCI_MSTR_IO_BUS >> 12); /* PCI base */
- pci_outl (immr_addr | POBAR_REG2, PCI_MSTR_IO_LOCAL >> 12); /* Local base */
- pci_outl (immr_addr | POCMR_REG2, POCMR2_MASK_ATTRIB); /* Size & attribute */
-
- /*
- * Set up slave window that allows PCI masters to access MPC826x local memory.
- * This window is set up using the first set of Inbound ATU registers
- */
- pci_outl (immr_addr | PITAR_REG0, PCI_SLV_MEM_LOCAL >> 12); /* Local base */
- pci_outl (immr_addr | PIBAR_REG0, PCI_SLV_MEM_BUS >> 12); /* PCI base */
- pci_outl (immr_addr | PICMR_REG0, PICMR0_MASK_ATTRIB); /* Size & attribute */
-
- /* See above for description - puts PCI request as highest priority */
- immap->im_siu_conf.sc_ppc_alrh = 0x03124567;
-
- /* Park the bus on the PCI */
- immap->im_siu_conf.sc_ppc_acr = PPC_ACR_BUS_PARK_PCI;
-
- /* Host mode - specify the bridge as a host-PCI bridge */
-
- pci_hose_write_config_byte(hose, host_devno, PCI_CLASS_CODE,
- PCI_CLASS_BRIDGE_CTLR);
-
- /* Enable the host bridge to be a master on the PCI bus, and to act as a PCI memory target */
- pci_hose_read_config_word(hose, host_devno, PCI_COMMAND, &tempShort);
- pci_hose_write_config_word(hose, host_devno, PCI_COMMAND,
- tempShort | PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY);
+ udelay (1000);
+ }
+
+ /*
+ * Set up master window that allows the CPU to access PCI Memory (prefetch)
+ * space. This window is set up using the first set of Outbound ATU registers.
+ */
+ immap->im_pci.pci_potar0 = cpu_to_le32 (PCI_MSTR_MEM_BUS >> 12); /* PCI base */
+ immap->im_pci.pci_pobar0 = cpu_to_le32 (PCI_MSTR_MEM_LOCAL >> 12); /* Local base */
+ immap->im_pci.pci_pocmr0 = cpu_to_le32 (POCMR0_MASK_ATTRIB); /* Size & attribute */
+
+ /*
+ * Set up master window that allows the CPU to access PCI Memory (non-prefetch)
+ * space. This window is set up using the second set of Outbound ATU registers.
+ */
+ immap->im_pci.pci_potar1 = cpu_to_le32 (PCI_MSTR_MEMIO_BUS >> 12); /* PCI base */
+ immap->im_pci.pci_pobar1 = cpu_to_le32 (PCI_MSTR_MEMIO_LOCAL >> 12); /* Local base */
+ immap->im_pci.pci_pocmr1 = cpu_to_le32 (POCMR1_MASK_ATTRIB); /* Size & attribute */
+
+ /*
+ * Set up master window that allows the CPU to access PCI IO space. This window
+ * is set up using the third set of Outbound ATU registers.
+ */
+ immap->im_pci.pci_potar2 = cpu_to_le32 (PCI_MSTR_IO_BUS >> 12); /* PCI base */
+ immap->im_pci.pci_pobar2 = cpu_to_le32 (PCI_MSTR_IO_LOCAL >> 12); /* Local base */
+ immap->im_pci.pci_pocmr2 = cpu_to_le32 (POCMR2_MASK_ATTRIB); /* Size & attribute */
+
+ /*
+ * Set up slave window that allows PCI masters to access MPC826x local memory.
+ * This window is set up using the first set of Inbound ATU registers
+ */
+ immap->im_pci.pci_pitar0 = cpu_to_le32 (PCI_SLV_MEM_LOCAL >> 12); /* PCI base */
+ immap->im_pci.pci_pibar0 = cpu_to_le32 (PCI_SLV_MEM_BUS >> 12); /* Local base */
+ immap->im_pci.pci_picmr0 = cpu_to_le32 (PICMR0_MASK_ATTRIB); /* Size & attribute */
+
+ /* See above for description - puts PCI request as highest priority */
+ immap->im_siu_conf.sc_ppc_alrh = 0x03124567;
+
+ /* Park the bus on the PCI */
+ immap->im_siu_conf.sc_ppc_acr = PPC_ACR_BUS_PARK_PCI;
+
+ /* Host mode - specify the bridge as a host-PCI bridge */
+
+ pci_hose_write_config_byte (hose, host_devno, PCI_CLASS_CODE,
+ PCI_CLASS_BRIDGE_CTLR);
+
+ /* Enable the host bridge to be a master on the PCI bus, and to act as a PCI memory target */
+ pci_hose_read_config_word (hose, host_devno, PCI_COMMAND, &tempShort);
+ pci_hose_write_config_word (hose, host_devno, PCI_COMMAND,
+ tempShort | PCI_COMMAND_MASTER |
+ PCI_COMMAND_MEMORY);
-#ifdef CONFIG_MPC8266ADS
/* do some bridge init, should be done on all 8260 based bridges */
- pci_hose_write_config_byte(hose, host_devno, PCI_CACHE_LINE_SIZE, 0x08);
- pci_hose_write_config_byte(hose, host_devno, PCI_LATENCY_TIMER, 0xF8);
-#endif
+ pci_hose_write_config_byte (hose, host_devno, PCI_CACHE_LINE_SIZE,
+ 0x08);
+ pci_hose_write_config_byte (hose, host_devno, PCI_LATENCY_TIMER,
+ 0xF8);
- hose->first_busno = 0;
- hose->last_busno = 0xff;
+ hose->first_busno = 0;
+ hose->last_busno = 0xff;
- /* System memory space */
+ /* System memory space */
#ifdef CONFIG_MPC8266ADS
- pci_set_region(hose->regions + 0,
- PCI_SLV_MEM_BUS,
- PCI_SLV_MEM_LOCAL,
- gd->ram_size,
- PCI_REGION_MEM | PCI_REGION_MEMORY);
+ pci_set_region (hose->regions + 0,
+ PCI_SLV_MEM_BUS,
+ PCI_SLV_MEM_LOCAL,
+ gd->ram_size, PCI_REGION_MEM | PCI_REGION_MEMORY);
#else
- pci_set_region(hose->regions + 0,
- CFG_SDRAM_BASE,
- CFG_SDRAM_BASE,
- 0x4000000,
- PCI_REGION_MEM | PCI_REGION_MEMORY);
+ pci_set_region (hose->regions + 0,
+ CFG_SDRAM_BASE,
+ CFG_SDRAM_BASE,
+ 0x4000000, PCI_REGION_MEM | PCI_REGION_MEMORY);
#endif
- /* PCI memory space */
+ /* PCI memory space */
#ifdef CONFIG_MPC8266ADS
- pci_set_region(hose->regions + 1,
- PCI_MSTR_MEMIO_BUS,
- PCI_MSTR_MEMIO_LOCAL,
- PCI_MSTR_MEMIO_SIZE,
- PCI_REGION_MEM);
+ pci_set_region (hose->regions + 1,
+ PCI_MSTR_MEMIO_BUS,
+ PCI_MSTR_MEMIO_LOCAL,
+ PCI_MSTR_MEMIO_SIZE, PCI_REGION_MEM);
#else
- pci_set_region(hose->regions + 1,
- PCI_MSTR_MEM_BUS,
- PCI_MSTR_MEM_LOCAL,
- PCI_MSTR_MEM_SIZE,
- PCI_REGION_MEM);
+ pci_set_region (hose->regions + 1,
+ PCI_MSTR_MEM_BUS,
+ PCI_MSTR_MEM_LOCAL,
+ PCI_MSTR_MEM_SIZE, PCI_REGION_MEM);
#endif
- /* PCI I/O space */
- pci_set_region(hose->regions + 2,
- PCI_MSTR_IO_BUS,
- PCI_MSTR_IO_LOCAL,
- PCI_MSTR_IO_SIZE,
- PCI_REGION_IO);
+ /* PCI I/O space */
+ pci_set_region (hose->regions + 2,
+ PCI_MSTR_IO_BUS,
+ PCI_MSTR_IO_LOCAL, PCI_MSTR_IO_SIZE, PCI_REGION_IO);
+
+ hose->region_count = 3;
+
+ pci_register_hose (hose);
+ /* Mask off master abort machine checks */
+ immap->im_pci.pci_emr &= cpu_to_le32 (~PCI_ERROR_PCI_NO_RSP);
+ eieio ();
+
+ hose->last_busno = pci_hose_scan (hose);
- hose->region_count = 3;
- pci_register_hose(hose);
+ /* clear the error in the error status register */
+ immap->im_pci.pci_esr = cpu_to_le32 (PCI_ERROR_PCI_NO_RSP);
- hose->last_busno = pci_hose_scan(hose);
+ /* unmask master abort machine checks */
+ immap->im_pci.pci_emr |= cpu_to_le32 (PCI_ERROR_PCI_NO_RSP);
}
-#endif /* CONFIG_PCI */
+#endif /* CONFIG_PCI */
diff --git a/cpu/mpc8260/traps.c b/cpu/mpc8260/traps.c
index a7f6f7e..deab808 100644
--- a/cpu/mpc8260/traps.c
+++ b/cpu/mpc8260/traps.c
@@ -35,6 +35,7 @@
#include <common.h>
#include <command.h>
#include <asm/processor.h>
+#include <asm/m8260_pci.h>
#if (CONFIG_COMMANDS & CFG_CMD_KGDB)
int (*debugger_exception_handler)(struct pt_regs *) = 0;
@@ -86,14 +87,12 @@ void show_regs(struct pt_regs * regs)
printf("\n");
for (i = 0; i < 32; i++) {
- if ((i % 8) == 0)
- {
+ if ((i % 8) == 0) {
printf("GPR%02d: ", i);
}
printf("%08lX ", regs->gpr[i]);
- if ((i % 8) == 7)
- {
+ if ((i % 8) == 7) {
printf("\n");
}
}
@@ -108,6 +107,24 @@ _exception(int signr, struct pt_regs *regs)
panic("Exception in kernel pc %lx signal %d",regs->nip,signr);
}
+#ifdef CONFIG_PCI
+void dump_pci (void)
+{
+
+ volatile immap_t *immap = (immap_t *) CFG_IMMR;
+
+ printf ("PCI: err status %x err mask %x err ctrl %x\n",
+ le32_to_cpu (immap->im_pci.pci_esr),
+ le32_to_cpu (immap->im_pci.pci_emr),
+ le32_to_cpu (immap->im_pci.pci_ecr));
+ printf (" error address %x error data %x ctrl %x\n",
+ le32_to_cpu (immap->im_pci.pci_eacr),
+ le32_to_cpu (immap->im_pci.pci_edcr),
+ le32_to_cpu (immap->im_pci.pci_eccr));
+
+}
+#endif
+
void
MachineCheckException(struct pt_regs *regs)
{
@@ -117,6 +134,17 @@ MachineCheckException(struct pt_regs *regs)
* when a device is not present. Catch it and return to
* the PCI exception handler.
*/
+#ifdef CONFIG_PCI
+ volatile immap_t *immap = (immap_t *)CFG_IMMR;
+#ifdef DEBUG
+ dump_pci();
+#endif
+ /* clear the error in the error status register */
+ if(immap->im_pci.pci_esr && cpu_to_le32(PCI_ERROR_PCI_NO_RSP)) {
+ immap->im_pci.pci_esr = cpu_to_le32(PCI_ERROR_PCI_NO_RSP);
+ return;
+ }
+#endif
if ((fixup = search_exception_table(regs->nip)) != 0) {
regs->nip = fixup;
return;
@@ -130,8 +158,7 @@ MachineCheckException(struct pt_regs *regs)
printf("Machine check in kernel mode.\n");
printf("Caused by (from msr): ");
printf("regs %p ",regs);
- switch( regs->msr & 0x0000F000)
- {
+ switch( regs->msr & 0x0000F000) {
case (1<<12) :
printf("Machine check signal - probably due to mm fault\n"
"with mmu off\n");
@@ -150,6 +177,9 @@ MachineCheckException(struct pt_regs *regs)
}
show_regs(regs);
print_backtrace((unsigned long *)regs->gpr[1]);
+#ifdef CONFIG_PCI
+ dump_pci();
+#endif
panic("machine check");
}
generated by cgit v1.1 at 2024-12-01 00:37:40 +0000