ichspi: use a variable to distinguish ich generations instead of spi_programmer->type
The type member is enough most of the time to derive the wanted
information, but
- not always (e.g. ich_set_bbar),
- only available after registration, which we want to delay till the
end of init, and
- we really want to distinguish between chipset version-grained
attributes which are not reflected by the registered programmer.
Hence this patch introduces a new static variable which is set up
early by the init functions and allows us to get rid of all "switch
(spi_programmer->type)" in ichspi.c. We reuse the enum introduced
for descriptor mode for the type of the new variable.
Previously magic numbers were passed by chipset_enable wrappers. Now
they use the enumeration items too. To get this working the enum
definition had to be moved to programmer.h.
Another noteworthy detail: previously we have checked for a valid
programmer/ich generation all over the place. I have removed those
checks and added one single check in the init method. Calling any
function of a programmer without executing the init method first, is
undefined behavior.
Corresponding to flashrom svn r1460.
Signed-off-by: Stefan Tauner <stefan.tauner@alumni.tuwien.ac.at>
Acked-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
diff --git a/chipset_enable.c b/chipset_enable.c
index d2d81e0..15bd3eb 100644
--- a/chipset_enable.c
+++ b/chipset_enable.c
@@ -489,7 +489,7 @@
}
static int enable_flash_ich_dc_spi(struct pci_dev *dev, const char *name,
- int ich_generation)
+ enum ich_chipset ich_generation)
{
int ret;
uint8_t bbs, buc;
@@ -504,7 +504,7 @@
static const char *const straps_names_unknown[] = { "unknown", "unknown", "unknown", "unknown" };
switch (ich_generation) {
- case 7:
+ case CHIPSET_ICH7:
/* EP80579 may need further changes, but this is the least
* intrusive way to get correct BOOT Strap printing without
* changing the rest of its code path). */
@@ -513,13 +513,13 @@
else
straps_names = straps_names_ich7_nm10;
break;
- case 8:
- case 9:
- case 10:
+ case CHIPSET_ICH8:
+ case CHIPSET_ICH9:
+ case CHIPSET_ICH10:
straps_names = straps_names_ich8910;
break;
- case 11:
- case 12:
+ case CHIPSET_5_SERIES_IBEX_PEAK:
+ case CHIPSET_6_SERIES_COUGAR_POINT:
straps_names = straps_names_pch56;
break;
default:
@@ -557,7 +557,7 @@
* on ICH7 when the southbridge is strapped to LPC
*/
buses_supported = BUS_FWH;
- if (ich_generation == 7) {
+ if (ich_generation == CHIPSET_ICH7) {
if (bbs == 0x03) {
/* If strapped to LPC, no further SPI initialization is
* required. */
@@ -579,34 +579,34 @@
static int enable_flash_ich7(struct pci_dev *dev, const char *name)
{
- return enable_flash_ich_dc_spi(dev, name, 7);
+ return enable_flash_ich_dc_spi(dev, name, CHIPSET_ICH7);
}
static int enable_flash_ich8(struct pci_dev *dev, const char *name)
{
- return enable_flash_ich_dc_spi(dev, name, 8);
+ return enable_flash_ich_dc_spi(dev, name, CHIPSET_ICH8);
}
static int enable_flash_ich9(struct pci_dev *dev, const char *name)
{
- return enable_flash_ich_dc_spi(dev, name, 9);
+ return enable_flash_ich_dc_spi(dev, name, CHIPSET_ICH9);
}
static int enable_flash_ich10(struct pci_dev *dev, const char *name)
{
- return enable_flash_ich_dc_spi(dev, name, 10);
+ return enable_flash_ich_dc_spi(dev, name, CHIPSET_ICH10);
}
/* Ibex Peak aka. 5 series & 3400 series */
static int enable_flash_pch5(struct pci_dev *dev, const char *name)
{
- return enable_flash_ich_dc_spi(dev, name, 11);
+ return enable_flash_ich_dc_spi(dev, name, CHIPSET_5_SERIES_IBEX_PEAK);
}
/* Cougar Point aka. 6 series & c200 series */
static int enable_flash_pch6(struct pci_dev *dev, const char *name)
{
- return enable_flash_ich_dc_spi(dev, name, 12);
+ return enable_flash_ich_dc_spi(dev, name, CHIPSET_6_SERIES_COUGAR_POINT);
}
static int via_no_byte_merge(struct pci_dev *dev, const char *name)
diff --git a/ich_descriptors.h b/ich_descriptors.h
index 4e2ad0a..714eda9 100644
--- a/ich_descriptors.h
+++ b/ich_descriptors.h
@@ -24,6 +24,7 @@
#define __ICH_DESCRIPTORS_H__ 1
#include <stdint.h>
+#include "programmer.h" /* for enum ich_chipset */
/* FIXME: Replace with generic return codes */
#define ICH_RET_OK 0
@@ -63,20 +64,6 @@
#define ICH_FREG_BASE(flreg) (((flreg) << 12) & 0x01fff000)
#define ICH_FREG_LIMIT(flreg) (((flreg) >> 4) & 0x01fff000)
-/* Used to select the right descriptor printing function.
- * Currently only ICH8 and Ibex Peak are supported.
- */
-enum ich_chipset {
- CHIPSET_ICH_UNKNOWN,
- CHIPSET_ICH7 = 7,
- CHIPSET_ICH8,
- CHIPSET_ICH9,
- CHIPSET_ICH10,
- CHIPSET_5_SERIES_IBEX_PEAK,
- CHIPSET_6_SERIES_COUGAR_POINT,
- CHIPSET_7_SERIES_PANTHER_POINT
-};
-
void prettyprint_ich_reg_vscc(uint32_t reg_val, int verbosity);
struct ich_desc_content {
diff --git a/ichspi.c b/ichspi.c
index afa420b..b0f312a 100644
--- a/ichspi.c
+++ b/ichspi.c
@@ -172,6 +172,7 @@
/* ICH SPI configuration lock-down. May be set during chipset enabling. */
static int ichspi_lock = 0;
+static enum ich_chipset ich_generation = CHIPSET_ICH_UNKNOWN;
uint32_t ichspi_bbar = 0;
static void *ich_spibar = NULL;
@@ -454,23 +455,20 @@
return -1;
}
- switch (spi_programmer->type) {
- case SPI_CONTROLLER_ICH7:
- case SPI_CONTROLLER_VIA:
+ switch (ich_generation) {
+ case CHIPSET_ICH7:
preop = REGREAD16(ICH7_REG_PREOP);
optype = REGREAD16(ICH7_REG_OPTYPE);
opmenu[0] = REGREAD32(ICH7_REG_OPMENU);
opmenu[1] = REGREAD32(ICH7_REG_OPMENU + 4);
break;
- case SPI_CONTROLLER_ICH9:
+ case CHIPSET_ICH8:
+ default: /* Future version might behave the same */
preop = REGREAD16(ICH9_REG_PREOP);
optype = REGREAD16(ICH9_REG_OPTYPE);
opmenu[0] = REGREAD32(ICH9_REG_OPMENU);
opmenu[1] = REGREAD32(ICH9_REG_OPMENU + 4);
break;
- default:
- msg_perr("%s: unsupported chipset\n", __func__);
- return -1;
}
op->preop[0] = (uint8_t) preop;
@@ -529,9 +527,8 @@
}
msg_pdbg("\n%s: preop=%04x optype=%04x opmenu=%08x%08x\n", __func__, preop, optype, opmenu[0], opmenu[1]);
- switch (spi_programmer->type) {
- case SPI_CONTROLLER_ICH7:
- case SPI_CONTROLLER_VIA:
+ switch (ich_generation) {
+ case CHIPSET_ICH7:
/* Register undo only for enable_undo=1, i.e. first call. */
if (enable_undo) {
rmmio_valw(ich_spibar + ICH7_REG_PREOP);
@@ -544,7 +541,8 @@
mmio_writel(opmenu[0], ich_spibar + ICH7_REG_OPMENU);
mmio_writel(opmenu[1], ich_spibar + ICH7_REG_OPMENU + 4);
break;
- case SPI_CONTROLLER_ICH9:
+ case CHIPSET_ICH8:
+ default: /* Future version might behave the same */
/* Register undo only for enable_undo=1, i.e. first call. */
if (enable_undo) {
rmmio_valw(ich_spibar + ICH9_REG_PREOP);
@@ -557,9 +555,6 @@
mmio_writel(opmenu[0], ich_spibar + ICH9_REG_OPMENU);
mmio_writel(opmenu[1], ich_spibar + ICH9_REG_OPMENU + 4);
break;
- default:
- msg_perr("%s: unsupported chipset\n", __func__);
- return -1;
}
return 0;
@@ -569,16 +564,17 @@
* Try to set BBAR (BIOS Base Address Register), but read back the value in case
* it didn't stick.
*/
-static void ich_set_bbar(int ich_generation, uint32_t min_addr)
+static void ich_set_bbar(uint32_t min_addr)
{
int bbar_off;
switch (ich_generation) {
- case 7:
+ case CHIPSET_ICH7:
bbar_off = 0x50;
break;
- case 8:
+ case CHIPSET_ICH8:
msg_perr("BBAR offset is unknown on ICH8!\n");
return;
+ case CHIPSET_ICH9:
default: /* Future version might behave the same */
bbar_off = ICH9_REG_BBAR;
break;
@@ -943,15 +939,12 @@
return SPI_INVALID_LENGTH;
}
- switch (spi_programmer->type) {
- case SPI_CONTROLLER_VIA:
- case SPI_CONTROLLER_ICH7:
+ switch (ich_generation) {
+ case CHIPSET_ICH7:
return ich7_run_opcode(op, offset, datalength, data, maxlength);
- case SPI_CONTROLLER_ICH9:
+ case CHIPSET_ICH8:
+ default: /* Future version might behave the same */
return ich9_run_opcode(op, offset, datalength, data);
- default:
- /* If we ever get here, something really weird happened */
- return -1;
}
}
@@ -1022,19 +1015,11 @@
opcode->spi_type == SPI_OPCODE_TYPE_WRITE_WITH_ADDRESS) {
addr = (writearr[1] << 16) |
(writearr[2] << 8) | (writearr[3] << 0);
- switch (spi_programmer->type) {
- case SPI_CONTROLLER_ICH7:
- case SPI_CONTROLLER_VIA:
- case SPI_CONTROLLER_ICH9:
- if (addr < ichspi_bbar) {
- msg_perr("%s: Address 0x%06x below allowed "
- "range 0x%06x-0xffffff\n", __func__,
- addr, ichspi_bbar);
- return SPI_INVALID_ADDRESS;
- }
- break;
- default:
- break;
+ if (addr < ichspi_bbar) {
+ msg_perr("%s: Address 0x%06x below allowed "
+ "range 0x%06x-0xffffff\n", __func__,
+ addr, ichspi_bbar);
+ return SPI_INVALID_ADDRESS;
}
}
@@ -1316,7 +1301,7 @@
};
int ich_init_spi(struct pci_dev *dev, uint32_t base, void *rcrb,
- int ich_generation)
+ enum ich_chipset ich_gen)
{
int i;
uint8_t old, new;
@@ -1324,15 +1309,16 @@
uint32_t tmp;
int desc_valid = 0;
+ ich_generation = ich_gen;
+
switch (ich_generation) {
- case 7:
+ case CHIPSET_ICH_UNKNOWN:
+ return -1;
+ case CHIPSET_ICH7:
+ case CHIPSET_ICH8:
spibar_offset = 0x3020;
break;
- case 8:
- spibar_offset = 0x3020;
- break;
- case 9:
- case 10:
+ case CHIPSET_ICH9:
default: /* Future version might behave the same */
spibar_offset = 0x3800;
break;
@@ -1345,7 +1331,7 @@
ich_spibar = rcrb + spibar_offset;
switch (ich_generation) {
- case 7:
+ case CHIPSET_ICH7:
msg_pdbg("0x00: 0x%04x (SPIS)\n",
mmio_readw(ich_spibar + 0));
msg_pdbg("0x02: 0x%04x (SPIC)\n",
@@ -1381,13 +1367,11 @@
msg_pinfo("WARNING: SPI Configuration Lockdown activated.\n");
ichspi_lock = 1;
}
- ich_set_bbar(ich_generation, 0);
+ ich_set_bbar(0);
register_spi_programmer(&spi_programmer_ich7);
ich_init_opcodes();
break;
- case 8:
- case 9:
- case 10:
+ case CHIPSET_ICH8:
default: /* Future version might behave the same */
tmp2 = mmio_readw(ich_spibar + ICH9_REG_HSFS);
msg_pdbg("0x04: 0x%04x (HSFS)\n", tmp2);
@@ -1447,7 +1431,7 @@
mmio_readl(ich_spibar + ICH9_REG_OPMENU));
msg_pdbg("0x9C: 0x%08x (OPMENU+4)\n",
mmio_readl(ich_spibar + ICH9_REG_OPMENU + 4));
- if (ich_generation == 8) {
+ if (ich_generation == CHIPSET_ICH8) {
tmp = mmio_readl(ich_spibar + ICH8_REG_VSCC);
msg_pdbg("0xC1: 0x%08x (VSCC)\n", tmp);
msg_pdbg("VSCC: ");
@@ -1469,7 +1453,7 @@
tmp = mmio_readl(ich_spibar + ICH9_REG_FPB);
msg_pdbg("0xD0: 0x%08x (FPB)\n", tmp);
- ich_set_bbar(ich_generation, 0);
+ ich_set_bbar(0);
}
msg_pdbg("\n");
@@ -1524,6 +1508,7 @@
/* Not sure if it speaks all these bus protocols. */
buses_supported = BUS_LPC | BUS_FWH;
+ ich_generation = CHIPSET_ICH7;
register_spi_programmer(&spi_programmer_via);
msg_pdbg("0x00: 0x%04x (SPIS)\n", mmio_readw(ich_spibar + 0));
@@ -1556,7 +1541,7 @@
ichspi_lock = 1;
}
- ich_set_bbar(7, 0);
+ ich_set_bbar(0);
ich_init_opcodes();
return 0;
diff --git a/programmer.h b/programmer.h
index 16947f1..143f963 100644
--- a/programmer.h
+++ b/programmer.h
@@ -579,9 +579,20 @@
/* ichspi.c */
#if CONFIG_INTERNAL == 1
+enum ich_chipset {
+ CHIPSET_ICH_UNKNOWN,
+ CHIPSET_ICH7 = 7,
+ CHIPSET_ICH8,
+ CHIPSET_ICH9,
+ CHIPSET_ICH10,
+ CHIPSET_5_SERIES_IBEX_PEAK,
+ CHIPSET_6_SERIES_COUGAR_POINT,
+ CHIPSET_7_SERIES_PANTHER_POINT
+};
+
extern uint32_t ichspi_bbar;
int ich_init_spi(struct pci_dev *dev, uint32_t base, void *rcrb,
- int ich_generation);
+ enum ich_chipset ich_generation);
int via_init_spi(struct pci_dev *dev);
/* it85spi.c */